阅读说明：本技术 用于生产针织管的针通机及针织管的生产方法 (Needle machine for producing knitted tubes and method for producing knitted tubes ) 是由 戴恒 于 2019-09-27 设计创作，主要内容包括：本发明公开一种用于生产针织管的针通机及针织管的生产方法,其中,用于生产针织管的针通机包括机架；设在机架上的能够将针织线针织成针织管的针织单元,针织单元具有供针织线或针织管通过的第一通孔；设在针织单元前端的,用于将外部的弹性管输送至经由针织单元针织出的针织管内的输料单元,和/或设在针织单元的后端的,用于在针织单元针织出的针织管的外周成型外管的外管成型机。从而可以通过该针通机直接制备出任意长度的双层管或三层管,制得的双层管或三层管的使用寿命大于单层针织管；且由于省去人工套设内管和/或外管的过程,也无需通过接头将两条双层管或三层管连接,以获得所需长度的双层管或三层管,生产效率提高,生产成本降低。(The invention discloses a needle punching machine for producing a knitted tube and a production method of the knitted tube, wherein the needle punching machine for producing the knitted tube comprises a rack; a knitting unit provided on the frame and capable of knitting a knitting thread into a knitting tube, the knitting unit having a first through hole through which the knitting thread or the knitting tube passes; a feeding unit provided at a front end of the knitting unit for feeding an outer elastic tube into the knitting tube knitted by the knitting unit, and/or an outer tube forming machine provided at a rear end of the knitting unit for forming an outer tube at an outer periphery of the knitting tube knitted by the knitting unit. Therefore, the double-layer tube or the three-layer tube with any length can be directly prepared by the needle machine, and the service life of the prepared double-layer tube or the three-layer tube is longer than that of a single-layer knitted tube; and because the process of manually sleeving the inner pipe and/or the outer pipe is omitted, the two double-layer pipes or the three-layer pipes do not need to be connected through the joint, so that the double-layer pipes or the three-layer pipes with required lengths are obtained, the production efficiency is improved, and the production cost is reduced.)

1. A needle loom for producing knitted tubes, characterized in that it comprises:

a frame (200);

a knitting unit (40) provided on the frame (200) and capable of knitting a knitting thread (101) into a knitting tube (106), the knitting unit (40) having a first through hole (411) through which the knitting thread (101) or the knitting tube (106) passes;

a delivery unit (60) arranged at the front end of the knitting unit (40) for delivering an outer elastic tube (61) into a knitting tube (106) knitted by the knitting unit (40), and/or

An outer tube forming machine (70) provided at the rear end of the knitting unit (40) for forming an outer tube (107) for reducing friction of the knitted tube (106) or for maintaining the surface of the knitted tube (106) clean, on the outer periphery of the knitted tube (106) knitted by the knitting unit (40).

2. The needle loom for producing knitted tubes according to claim 1, characterized in that said knitting unit (40) is arranged to knit a knitted tube (106) that can stretch;

the outer pipe (107) is an elastic telescopic pipe or an inelastic corrugated pipe.

3. The needle loom for producing knitted tubes according to claim 2, characterized in that the outer tube forming machine (70) is a plastic extruder for forming elastic telescopic tubes at the periphery of a knitted tube (106) knitted by the knitting unit (40).

4. The needle punching machine for producing a knitted tube according to claim 2, characterized in that said delivery unit (60) is a support frame around which said elastic tube (61) is wound so that said elastic tube (61) can rotate, or a plastic extruder for molding said elastic tube (61).

5. The needle loom for producing knitted tubes according to any one of claims 1 to 4, characterized by further comprising:

a pulling unit (80) for pulling out a knitted tube (106) knitted by the knitting unit (40), and/or

A drawing unit (80) for drawing the outer tube (107) prepared by the outer tube forming machine (70) and internally sleeved with the knitted tube (106) to the outlet.

6. The needle loom for producing knitted tubes according to claim 5, characterized in that it further comprises a thread-feeding unit provided on said frame (200), provided at the front end of said knitting unit (40) and arranged so as to be able to deliver a knitting thread (101) to said knitting unit (40) for the knitting unit (40) to knit out a knitted tube (106).

7. The needle loom for producing knitted tubes according to claim 6, further comprising:

the tube tidying unit (71) is used for accommodating a knitted tube (106) which is pulled out from the knitting unit (40) by the pulling unit (80) and is internally sleeved with an elastic tube (61), or is used for accommodating an outer tube 107 which is pulled out from the outer tube forming machine (70) by the pulling unit (80) and is internally sleeved with the knitted tube (106).

8. The needle loom for producing knitted tubes according to claim 7, characterized in that a knitting guide tube (201) or a knitting guide strip is provided in said first through hole (411), a second through hole (312) for passing said knitting guide tube (201) or knitting guide strip is provided in said thread feeding unit, and said conveying unit (60) is arranged to be able to convey said elastic tube (61) into said knitting guide tube (201).

9. The needle loom for producing knitted tubes according to claim 8, characterized in that the end of the knitting guide tube (201) or knitting guide strip facing the tube sorting unit (71) is integrally formed or machined with a necking.

10. The needle loom for producing knitted tubes according to any one of claims 6 to 9, further comprising:

a synchronous rotary moving unit and a rotary motor (26) for simultaneously driving the thread feeding unit and the knitting unit (40) to move, the synchronous rotary moving unit being configured to drive the thread feeding unit to convey the knitting thread (101) on one side of the crochet needle (42) of the knitting unit (40) onto the crochet needle (42) under the driving of the rotary motor (26), and to drive the knitting unit (40) to reciprocate between approaching and departing from the thread feeding unit.

11. The needle loom for producing knitted tubes according to claim 10, characterized in that said synchronized rotary movement unit comprises a rotary transmission (25), a movement drive (44) and a transmission (90);

the rotating motor (26) is connected with the rotating transmission mechanism (25) and the moving driving mechanism (44) through the transmission mechanism (90), the rotating transmission mechanism (25) is connected with the thread feeding unit, and the moving driving mechanism (44) is connected with the knitting unit (40);

the rotary transmission mechanism (25) is arranged to drive the thread feeding unit to convey the knitting thread (101) at one side of the crochet hook (42) to the crochet hook (42) under the driving of the rotary motor (26);

the movement driving mechanism (44) is arranged to drive the knitting unit (40) to reciprocate towards and away from the thread feeding unit under the driving of the rotating motor (26);

the transmission mechanism (90) is arranged to drive the rotating transmission mechanism (25) and the moving driving mechanism (44) to move simultaneously under the driving of the rotating motor (26).

12. The needle loom for producing knitted tubes according to claim 11, characterized in that said rotary transmission mechanism (25) and a movement drive mechanism (44) are provided such that said rotary transmission mechanism (25) drives said thread feeding unit to rotate reciprocally once and said movement drive mechanism (44) drives said knitting unit (44) to move reciprocally twice.

13. The needle loom for producing knitted tubes according to claim 12, characterized in that said rotary motor (26) is also connected to said drawing unit (80) through said transmission mechanism (90).

14. A method of producing a needlepunch as claimed in any one of claims 1 to 13, characterised by the steps of:

s101: a crochet hook (42) for the thread feeding unit to convey the knitting thread (101) to the knitting unit (40);

s201, knitting a knitted pipe (106) by the crochet needle (42) on the periphery of the elastic pipe (61) output by the material conveying unit (60) to form a double-layer wear-resistant water pipe.

15. The method of producing a needle machine of claim 14, further comprising the steps of:

s301: and (3) sleeving the outer pipe (107) output by the outer pipe forming machine (70) on the outer surface of the double-layer wear-resistant water pipe produced in the step (201) to form a three-layer telescopic pipe.

16. A method of producing a needlepunch as claimed in any one of claims 1 to 13, characterised by the steps of:

s101: a crochet hook (42) for the thread feeding unit to convey the knitting thread (101) to the knitting unit (40);

s202': and (3) sleeving the outer pipe (107) output by the outer pipe forming machine (70) on the outer surface of a single-layer knitted pipe (106) produced by the crochet needle (42) of the knitting unit (40) to form a double-layer wear-resistant pipe.

Technical Field

The invention relates to the technical field of knitting equipment, in particular to a knitting machine for producing a knitted tube and a production method of the knitted tube.

Background

A needle machine is generally used for knitting circular belts, knitted tubes, mask belts, socks and the like. Patent application No. CN101415872B discloses a circular knitting machine for hosiery or the like, which is provided outside the needle cylinder with a plurality of knitting needles extending in the axial direction thereof for knitting and which is actuated by an actuating mechanism in such a manner that knitting of different knitting threads is simultaneously performed by the plurality of knitting needles for achieving rapid knitting. However, the general needle machine cannot directly produce a double-layer tube in which a tube body is arranged inside or outside the knitted tube, and a triple-layer tube in which tube bodies are arranged inside and outside the knitted tube, so that the service life of the produced tube is prolonged. At present, the double-layer pipe or the three-layer pipe is still prepared by manual penetration, the length of the prepared double-layer pipe or the three-layer pipe is limited, and the production efficiency is low.

Disclosure of Invention

In order to solve the problems that the lengths of a double-layer tube and a three-layer tube which are manufactured by a manual sleeving manner are limited and the production efficiency is low, according to one aspect of the invention, a needle machine for producing knitted tubes is provided.

The needle loom for producing a knitted tube comprises: a frame; a knitting unit provided on the frame and capable of knitting a knitting thread into a knitting tube, the knitting unit having a first through hole through which the knitting thread or the knitting tube passes; the outer tube forming machine is provided at a front end of the knitting unit, for feeding an outer elastic tube into the knitting tube knitted by the knitting unit, and/or at a rear end of the knitting unit, for forming an outer tube for reducing friction of the knitting tube or for maintaining a clean surface of the knitting tube at an outer periphery of the knitting tube knitted by the knitting unit. In the prior art, an inner pipe needs to be penetrated in a knitted pipe or an outer pipe needs to be penetrated at the periphery of the knitted pipe manually, and due to the limitation of conditions, the longest length of the produced double-layer pipe does not exceed 15 meters, which brings inconvenience to users needing the double-layer pipe with larger length; sometimes, in order to obtain a double-layer pipe with a longer length, the double-layer pipe with the shorter length needs to be connected through a joint, so that the production efficiency is low, and the production cost of the prepared double-layer pipe is high; similarly, the length and production efficiency of a triple-layer tube in which a knitted tube is internally provided with an inner tube and an outer tube is peripherally provided outside the knitted tube are also limited in the prior art. By adopting the needle machine for producing the knitted tube, the elastic tube is introduced into the knitted tube through the material conveying unit while the knitted tube is knitted by the knitting unit, and/or the outer tube is sleeved on the periphery of the knitted tube knitted by the knitting unit through the outer tube forming machine, so that the double-layer tube or the three-layer tube with any length is directly prepared, the wall thickness of the prepared double-layer tube or the three-layer tube is larger than that of the single-layer knitted tube, and the service life of the double-layer tube and the three-layer tube is longer than that of the single-layer knitted tube; and because the process of manually sleeving the inner pipe and/or the outer pipe is omitted, two double-layer pipes or three-layer pipes do not need to be connected through a joint so as to obtain the double-layer pipes or three-layer pipes with required lengths, the production efficiency is greatly improved, and the production cost is greatly reduced.

In some embodiments, the knitting unit is configured to knit a telescopically knit tube; the outer tube is an elastic telescopic tube or an inelastic folded tube. Therefore, when the elastic tube is sleeved inside the knitted tube or the outer tube is sleeved outside the knitted tube, the manufactured double-layer tube is a double-layer telescopic tube, the double-layer telescopic tube with any length can be manufactured as required, the knitted tube is uniform in surface layout on the elastic tube, redundant wrinkles of the knitted tube on the elastic tube cannot be formed, the using amount of the knitted tube is saved, 2 grams of polyester yarns are saved per meter by taking the double-layer telescopic tube with the diameter of the polyester yarns being 16mm as an example of a knitting line (as the elastic tube is manually penetrated in the prior art, the number of the wrinkles of the outer layer is large, the used length is large, 10 grams of the polyester yarns are used per meter, and the number of the used polyester yarns per meter is less than 8 grams of the wrinkles of the conventional product), so that the product is lightened; can lead to water in the elastic tube and use as the water pipe to make the double-deck flexible pipe that makes can regard as double-deck flexible water pipe to use, for example can lead to water in elastic tubes such as emulsion tube, because the emulsion tube has elasticity, under the pressure effect of letting in its inside water, the emulsion tube can stretch out and draw back, because knitting pipe parcel is outside the emulsion tube, can stretch out and draw back in step with the emulsion tube, avoid the emulsion tube because of wearing and tearing with outside direct contact, improve the life of double-deck flexible pipe. When the outer sleeve of knitted pipe was equipped with the outer tube, the outer tube can protect knitted pipe difficult by the scratch to make double-deck wear-resisting pipe, the life of extension double-deck pipe. When the elastic tube is sleeved in the knitted tube and the outer tube is sleeved outside the knitted tube, the service life of the manufactured three-layer telescopic tube is longer than that of the two-layer telescopic tube; when the outer pipe is an elastic telescopic pipe, the elastic telescopic pipe is uniformly distributed on the surface of the knitted pipe, so that the elastic telescopic pipe cannot form redundant wrinkles on the knitted pipe, the using amount of the elastic telescopic pipe is saved, the weight of a product is reduced, and the raw material cost is greatly saved; the elastic telescopic pipe is sleeved on the surface of the knitted pipe, so that the three-layer telescopic pipe is smooth in surface and not easy to scratch, and the service life of the three-layer telescopic pipe is longer than that of the double-layer telescopic pipe.

In some embodiments, the outer tube former is a plastic extruder for forming the elastic extension tube at the outer periphery of a knitted tube knitted by the knitting unit. So as to directly form the elastic extension tube on the periphery of the knitted tube.

In some embodiments, the feeding unit is a support frame around which the elastic tube is wound so that the elastic tube can rotate around the support frame, or a plastic extruder for molding the elastic tube. So as to convey the elastic tube into the first through hole.

In some embodiments, the needle loom for producing a knitted tube further comprises a pulling unit for pulling out a knitted tube knitted by the knitting unit, and/or a pulling unit for pulling out an outer tube prepared by an outer tube forming machine, inside which the knitted tube is sleeved. From this, can avoid because of the traction force of outer tube make-up machine not enough, and the knitting pipe that the inside cover that leads to preparing was equipped with the elasticity pipe or the knitting pipe that outside cover was equipped with the outer tube can not in time be pulled out, influence automated production's going on smoothly.

In some embodiments, the needle loom for producing a knitted tube further comprises a thread feeding unit provided on the machine frame, the thread feeding unit being provided at a front end of the knitting unit and being arranged to be able to feed the knitting thread to the knitting unit for the knitting unit to knit out the knitted tube. Thereby, the knitting yarn can be fed to the knitting unit by the yarn feeding unit to realize the integrated production of the needle loom for producing the knitting tube.

In some embodiments, the needle loom for producing a knitted tube further includes a tubular product preparation unit for receiving an outer tube inside which the elastic tube is fitted, which is drawn out from the knitting unit by the drawing unit, or an outer tube inside which the knitted tube is fitted, which is drawn out from the outer tube forming machine by the drawing unit. So as to arrange the tubular product produced by the needle machine for producing the knitted tube and facilitate the automatic production of the needle machine for producing the knitted tube.

In some embodiments, a knitting guide tube or a knitting guide strip is arranged in the first through hole, a second through hole for the knitting guide tube or the knitting guide strip to pass through is arranged on the thread feeding unit, and the conveying unit is arranged to convey the elastic tube into the knitting guide tube. The knitting tube knitted by the knitting unit can thereby be conveyed out through the gap between the first through-hole and the knitting guide tube or the knitting guide strip.

In some embodiments, the end of the knitting guide tube or knitting guide strip facing the tube preparation unit is integrally formed or machined with a neck-down. So as to prevent the knitted tube from being scratched.

In some embodiments, the needle loom for producing a knitted tube further includes a synchronous rotary motion unit for simultaneously driving the thread feeding unit and the knitting unit to move, and a rotary motor, the synchronous rotary motion unit being configured to drive the knitting unit to reciprocate between approaching and departing from the thread feeding unit while driving the thread feeding unit to feed the knitting thread on one side of the looper of the knitting unit onto the looper, under the drive of the rotary motor. Therefore, the thread feeding unit and the knitting unit can be driven to move simultaneously through one rotating motor, energy consumption is saved, and production cost is further reduced.

In some embodiments, the synchronous rotary motion unit comprises a rotary transmission mechanism, a motion driving mechanism, and a transmission mechanism; the rotating motor is connected with the rotating transmission mechanism and the moving driving mechanism through the transmission mechanism, the rotating transmission mechanism is connected with the thread feeding unit, and the moving driving mechanism is connected with the knitting unit; the rotation transmission mechanism is arranged to drive the yarn feeding unit to convey knitting yarns at one side of the crochet hook to the crochet hook under the driving of the rotation motor; the moving driving mechanism is arranged to drive the knitting unit to move back and forth towards and away from the thread feeding unit under the driving of the rotating motor; the transmission mechanism is arranged to drive the rotation transmission mechanism and the moving driving mechanism to move simultaneously under the driving of the rotation motor.

The rotary transmission mechanism and the moving driving mechanism are arranged in a way that the rotary transmission mechanism drives the thread feeding unit to rotate in a reciprocating way once, and the moving driving mechanism drives the knitting unit to move in a reciprocating way twice. The wire feeding unit is driven to rotate in a reciprocating manner through the rotating transmission mechanism, so that the problem that the rotating motor is easy to damage due to the fact that the rotating motor directly drives the wire feeding unit to rotate in a reciprocating manner can be solved; in this driving mode, the yarn feeding unit alternately feeds the knitting yarn on both sides of the hook to knit the stretchable knitted tube having the knitting yarn in the staggered mesh structure by the knitting unit.

The rotating motor is also connected with the traction mechanism through a transmission mechanism. Therefore, the thread feeding unit, the knitting unit and the traction mechanism can be driven to synchronously move by the same rotating motor, so that the energy consumption is further saved, and the production cost is reduced.

In order to solve the problems of limited double-layer tube manufactured by manual sleeving and low production efficiency, the invention provides a production method of a needle machine for producing knitted tubes.

The method comprises the following steps:

s101: the thread feeding unit conveys the knitting thread to the crochet needle of the knitting unit;

s201, knitting a knitted pipe on the periphery of the elastic pipe output by the material conveying unit by a crochet needle to form a double-layer wear-resistant water pipe.

In some embodiments, the method of production further comprises the steps of:

s301: and sleeving the outer pipe output by the outer pipe forming machine on the outer surface of the double-layer wear-resistant water pipe produced in the step S201 to form a three-layer telescopic pipe. The problem that the length of the three-layer pipe is limited in a manual sleeving mode is solved.

The product produced by the production method comprises a double-layer telescopic water pipe or a double-layer wear-resistant pipe or a three-layer telescopic pipe, wherein the double-layer telescopic pipe comprises the double-layer telescopic water pipe and the double-layer wear-resistant pipe, and the double-layer telescopic water pipe comprises a knitted pipe and an elastic pipe arranged in the knitted pipe; the double-layer wear-resistant pipe comprises a knitted pipe and an outer pipe sleeved outside the knitted pipe; the three layers of telescopic pipes comprise a knitted pipe, an elastic pipe sleeved in the knitted pipe and an outer pipe sleeved outside the knitted pipe. The length of the double-layer telescopic pipe and the three-layer telescopic pipe produced by the production method is not limited, and the production efficiency is high; and the knitted tube can not form folds outside the elastic tube, so that the using amount of knitting threads is saved, the weight of the double-layer telescopic tube and the three-layer telescopic tube is reduced, and the service life of the double-layer telescopic tube and the three-layer telescopic tube is prolonged.

In order to solve the problems of limited double-layer tube manufactured by manual sleeving and low production efficiency, the invention provides a production method of a needle machine for producing knitted tubes.

The method comprises the following steps:

s101: the thread feeding unit conveys the knitting thread to the crochet needle of the knitting unit;

s202': and sleeving the outer pipe output by the outer pipe forming machine on the outer surface of the single-layer knitted pipe produced by the crochet needle of the knitting unit to form the double-layer wear-resistant pipe.

Drawings

FIG. 1 is a schematic structural view of a thread feeding unit of a needle loom for producing a knitted tube according to an embodiment of the present invention;

FIG. 2 is a schematic view of a first wire feeding disc of the wire feeding unit shown in FIG. 1;

FIG. 3 is a schematic structural view of an embodiment of a rotation transmission mechanism of the wire feeding unit shown in FIG. 1;

FIG. 4 is a schematic view of the extreme movement position of the rotary drive mechanism of FIG. 3;

FIG. 5 is a schematic structural view of a needle loom in accordance with an embodiment of the present invention;

FIG. 6 is a schematic structural view of the needle loom of FIG. 5;

FIG. 7 is an enlarged partial schematic view of the needle loom of FIG. 6;

FIG. 8 is a schematic view of the structure of the knitting unit shown in FIG. 6;

FIG. 9 is a schematic view of the structure of the bearded needle of the needle loom of FIG. 6;

FIG. 10 is a schematic view of the synchronous motion and rotation structure of the needle loom of FIG. 6;

FIG. 11 is an enlarged schematic view of the needle loom of FIG. 5 at A;

FIG. 12 is an enlarged view of the needle loom of FIG. 6 at B;

FIG. 13 is a schematic representation of the construction of a single layer knitted tube produced by the needle loom of FIG. 6;

FIG. 14 is a schematic view of the construction of a double knit tube produced by the needle loom of FIG. 6;

FIG. 15 is a schematic structural view of another double knit tube produced by the needle loom of FIG. 6;

FIG. 16 is a schematic view of the mechanism of yet another double knit tube produced by the needle loom of FIG. 6;

FIG. 17 is a schematic representation of the construction of a triple knit tube produced by the needle loom of FIG. 6;

FIG. 18 is a schematic representation of the construction of another triple layer knit tube produced by the needle loom of FIG. 6.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 to 4 schematically show a thread feeding unit of a needle loom for producing knitted tubes according to one embodiment of the present invention.

As shown in fig. 1, the thread feeding unit of the needle threading machine for producing the knitted tube comprises a support 100, a rotating structure 20 and a first thread passing disc 31, wherein the rotating structure 20 is arranged on the support 100, the first thread passing disc 31 is arranged on the rotating structure 20, a plurality of first thread passing holes 311 are integrally formed or machined on the first thread passing disc 31, each first thread passing hole 311 is used for feeding the knitting thread 101 to a crochet needle of the needle threading machine, and the rotating structure 20 is arranged to drive the first thread passing disc 31 to rotate. Thus, a group of filaments (including a plurality of filaments) originally intended for forming a yarn (a usual knitting yarn 101) by twisting can be passed through one first thread passage hole 311, and each first thread passage hole 311 individually feeds one group of filaments to one crochet needle at a time.

Preferably, the rotating structure 20 is configured to drive the first wire passing disc 31 to rotate in forward and reverse directions alternately. Thereby, the plurality of filaments in each first thread through hole 311 are more closely wound together. When using the thread feeding unit, the thread feeding unit is installed on the needle loom at the front end of the crochet needle, and the thread feeding unit is installed such that the rotation shaft of the rotation structure 20 is perpendicular to the moving direction of the crochet needle, so that the knitting threads 101 of both sides of the crochet needle can be alternately transferred to the crochet needle through the first thread passing disk 31 to knit the knitted tube in which the knitting threads 101 are alternately arranged by the crochet needle, thereby enabling the knitted tube knitted by the crochet needle to be expanded and contracted.

Fig. 5 to 11 schematically show a needle loom for producing a knitted tube 106 according to an embodiment of the invention.

As shown in fig. 5 to 7, the needle machine includes a frame 200; a knitting unit 40 for knitting the knitting thread 101 into a knitted tube 106 and a thread feeding unit for feeding the knitting unit 40 with the knitting thread 101, both provided on the frame 200, wherein the thread feeding unit is the one shown in fig. 1 to 4. Specifically, the support 100 of the wire feeding unit is disposed on the frame 200, and the support 100 may be integrally formed on the frame 200 or may be fixedly connected to the frame 200 as long as the support 100 and the frame 200 are relatively fixed.

Preferably, as shown in fig. 2, a plurality of first wire holes 311 are circumferentially distributed on the first wire passing disc 31. Further, a plurality of first threading holes 311 are uniformly distributed circumferentially on the first threading disc 31 to feed the knitting thread 101 uniformly to the bearded needles of the needle threading machine through the plurality of first threading holes 311.

Preferably, the rotation axis of the first yarn threading disc 31 is parallel to the axis of the first yarn threading hole 311, so as to prevent the knitting yarns 101 in different first yarn threading holes 311 from intertwining with each other during the rotation of the first yarn threading disc 31, thereby ensuring that the knitting yarns 101 can be smoothly conveyed through the first yarn threading hole 311.

Further, as shown in fig. 1, the thread feeding unit of the needle loom for producing a knitted tube further includes a second thread passing reel 32 fixedly mounted on the support 100; the second yarn passing disk 32 is located at the front end of the first yarn passing disk 31, a plurality of second yarn passing holes 321 are integrally formed or machined in the second yarn passing disk 32, each second yarn passing hole 321 is used for conveying knitting yarns 101 to one first yarn passing hole 311, the plurality of second yarn passing holes 321 are circumferentially distributed on the second yarn passing disk 32, and the rotating structure 20 drives the first yarn passing disk 31 to rotate relative to the second yarn passing disk 32 and the support 100. When the thread feeding unit is installed on a needle threading machine, a crochet hook is located at the rear end of a first thread passing disc 31, and a plurality of fiber yarns in the same first thread passing hole 311 are sequentially rubbed by the inner wall of a second thread passing hole 321 and the inner wall of the first thread passing hole 311 before being conveyed to the crochet hook, so that the plurality of fiber yarns conveyed to the crochet hook are wound more tightly. Preferably, the axis of the second thread passing hole 321 is arranged parallel to the axis of the first thread passing hole 311 to ensure that the second thread passing hole 321 smoothly feeds the knitting thread 101 into the first thread passing hole 311.

Preferably, the second wire passing disc 32 is disposed on the bracket 100 through a space moving mechanism, and the space moving mechanism is configured to drive the second wire passing disc 32 to move in a plane parallel to the first wire passing disc 31 and is further configured to drive the second wire passing disc 32 to move in a plane perpendicular to the first wire passing disc 31. Specifically, the space moving mechanism may include a first moving structure, a second moving structure, and a third moving structure, which are connected in sequence, wherein the first moving structure is connected to the bracket 100, the third moving structure is connected to the second wire passing plate 32, the first moving structure drives the second moving structure and the third moving structure to move back and forth along a direction perpendicular to the first wire passing plate 31, the second moving structure drives the third moving structure to move back and forth along a direction in a plane parallel to the first wire passing plate 31, and the third moving structure drives the second wire passing plate 32 to move back and forth along a driving direction perpendicular to the second moving structure in a plane parallel to the first wire passing plate 31. More specifically, the first moving structure, the second moving structure and the third moving structure may use a rail-slider structure or a lead screw nut structure commonly used in the prior art, taking a rail-slider structure as an example, a rail of the first moving structure is mounted on the bracket 100, a rail of the second moving structure is mounted on a slider of the first moving structure, a rail of the third moving structure is mounted on a slider of the second moving structure, and the second wire passing disc 32 is mounted on a slider of the third moving structure (not shown in the figure). The spatial shifting mechanism may also take other implementations known in the art.

Preferably, the axis of the circumference enclosed by the plurality of second thread passing holes 321 coincides with the axis of the circumference enclosed by all the first thread passing holes 311, the number of the second thread passing holes 321 is the same as that of the first thread passing holes 311, and the second thread passing holes 321 and the first thread passing holes 311 are uniformly distributed circumferentially to uniformly feed the knitting threads 101 to the first thread passing holes 311 through the second thread passing holes 321. Preferably, the distance between the second wire passing hole 321 and the rotating shaft of the first wire passing disc 31 is greater than the distance between the first wire passing hole 311 and the rotating shaft of the first wire passing disc 31. So as to prevent the fiber filaments in each first wire passing hole 311 and/or second wire passing hole 321 from being intertwined with the fiber filaments in other first wire passing holes 311 and/or second wire passing holes 321, thereby ensuring smooth delivery of the fiber filaments.

Further, as shown in fig. 1, the thread feeding unit of the needle loom for producing a knitted tube further includes a third thread passing reel 33; the first yarn passing disc 31 is arranged on the rotating structure 20 through the third yarn passing disc 33, the third yarn passing disc 33 is arranged between the first yarn passing disc 31 and the second yarn passing disc 32, a plurality of third yarn passing holes 331 are integrally formed or machined in the third yarn passing disc 33, each third yarn passing hole 331 is used for conveying knitting yarns 101 conveyed from the second yarn passing hole 321 to the first yarn passing hole 311, the plurality of third yarn passing holes 331 are circumferentially distributed on the third yarn passing disc 33, and the rotating structure 20 drives the third yarn passing disc 33 to drive the first yarn passing disc 31 to rotate together. Accordingly, as the third reel 33 and the first reel 31 are rotated by the rotating mechanism 20, the knitting yarn 101 fed to the hook needle 42 of the needle loom by the yarn feeding unit swings while passing through the second and third yarn passing holes 321 and 331 and passing through the first yarn passing hole 311, whereby a plurality of filaments constituting the knitting yarn 101 in each yarn passing hole are entangled with each other, and a more densely entangled knitting yarn 101 is formed.

Preferably, the axis of the third thread passing hole 331 is disposed parallel to the axis of the first thread passing hole 311 to ensure that the second thread passing hole 321 smoothly feeds the knitting thread 101 into the third thread passing hole 331 and to ensure that the third thread passing hole 331 smoothly feeds the knitting thread 101 into the first thread passing hole 311.

The first wire passing disc 31 and the third wire passing disc 33 can be fixedly connected by means of a fixing connection method commonly used in the prior art, for example, the first wire passing disc and the third wire passing disc are connected by screws, or the first wire passing disc and the third wire passing disc are directly welded or glued together. In this embodiment, as shown in fig. 1, the first wire passing disc 31 and the third wire passing disc 33 are connected by a first connecting rod 34, and the first connecting rod 34, the first wire passing disc 31 and the third wire passing disc 33 may also adopt a fixing connection manner commonly used in the prior art, which is not described herein again.

Preferably, the axis of the circumference enclosed by the plurality of third thread passing holes 331 coincides with the axis of the circumference enclosed by the plurality of first thread passing holes 311, and the number of the third thread passing holes 331 is the same as that of the first thread passing holes 311, and the third thread passing holes 331 and the first thread passing holes 311 are uniformly distributed circumferentially, so that the knitting thread 101 is uniformly fed to the first thread passing holes 311 through the third thread passing holes 331.

When the number of the first thread passing holes 311, the second thread passing holes 321 and the third thread passing holes 331 is the same, and the axes of the circumferences respectively enclosed by the first thread passing holes 311, the second thread passing holes 321 and the third thread passing holes 331 are overlapped with each other and are uniformly distributed on the circumferences, the second thread passing holes 321 can uniformly feed the knitting threads 101 to the third thread passing holes 331, and meanwhile, the third thread passing holes 331 can uniformly feed the knitting threads 101 to the first thread passing holes 311.

Preferably, as shown in fig. 1, the distances between the first threading hole 311 and the second threading hole 321 and the rotating shaft of the first threading disc 31 are greater than the distances between the third threading hole 331 and the rotating shaft of the first threading disc 31, so as to prevent the fiber filaments in each third threading hole 331 and/or second threading hole 321 from being intertwined with the fiber filaments in other third threading holes 331 and/or second threading holes 321, thereby ensuring smooth delivery of the fiber filaments.

A first embodiment of the rotating structure 20 as shown in fig. 1, the rotating structure 20 includes a first timing pulley 21, a bearing 22, a second timing pulley 23, and a first belt 24. The first synchronous pulley 21 is mounted on the carrier 100 by means of a bearing 22, preferably coaxially connected. The first wire passing disc 31 is fixedly mounted on the first synchronous pulley 21, and preferably, the first wire passing disc and the first synchronous pulley are coaxially arranged. The first timing pulley 21 is connected to the second timing pulley 23 via a first belt 24. The wire feeding unit may be provided with a driving device for driving the rotation structure 20 to operate, or the rotation structure 20 may be driven to operate by an external driving device, preferably, the driving device employs a rotation motor 26, the second synchronous pulley 23 is driven by the rotation motor 26, the driving device may employ other devices as long as the driving device can drive the rotation structure 20 to operate, and the specific implementation manner of the driving device is not limited in the present invention. Specifically, the rotating motor 26 is coaxially connected to the second synchronous pulley 23, and the rotating motor 26 is provided on the bracket 100 or the second synchronous pulley 23 is pivotably provided on the bracket 100. When the rotating motor 26 drives the second synchronous pulley 23 to rotate, the second synchronous pulley 23 drives the first synchronous pulley 21 to rotate through the first belt 24, and further drives the first wire passing disc 31 fixedly installed on the first synchronous pulley 21 to rotate. When the first wire passing disc 31 further comprises a third wire passing disc 33, the first wire passing disc 31 is mounted on the first synchronous pulley 21 through the third wire passing disc 33, and the first synchronous pulley 21 drives the first wire passing disc 31 to rotate through the third wire passing disc 33. The rotation direction and the rotation mode of the rotating motor 26 for driving the second synchronous pulley 23 can be controlled by a control module preset with control information, the rotating motor 26 can be a commonly used servo motor in the prior art, the control module can be a commonly used PLC, and the invention does not limit the specific types of the servo motor and the PLC.

Preferably, as shown in fig. 1, a hanging boss 105 for connecting the bearing 22 is formed or attached to the bracket 100. Specifically, a bearing mounting hole 1051 for mounting the bearing 22 is formed in the suspension boss 105, and the bearing 22 is mounted in the bearing mounting hole 1051. More specifically, the outer ring 221 of the bearing 22 is mounted on the suspension boss 105, the lower end of the inner ring 222 of the bearing 22 is connected with the upper end of the first synchronous pulley 21, the lower end of the first synchronous pulley 21 is connected with the first wire passing disc 31 (when the third wire passing disc 33 is further provided, the third wire passing disc 33 is connected with the first wire passing disc 31), and the first synchronous pulley 21 is integrally formed or machined with an inner diameter for the knitting yarn 101 to pass through. Preferably, the inner diameter of the first synchronous pulley 21 and the bearing 22 is capable of allowing the first wire passing disc 31 to pass through (when the third wire passing disc 33 is further provided, the third wire passing disc 33 and/or the first wire passing disc 31 can pass through). Since the first string-passing reel 31 and/or the third string-passing reel 33 pass through the inner diameters of the first synchronizing pulley 21 and the bearing 22, it is possible to prevent the first synchronizing pulley 21 and the bearing 22 from contacting the knitting yarn 101 passing through the first string-passing hole 311 and the third string-passing hole 313, causing the first synchronizing pulley 21 and the bearing 22 to rub against the knitting yarn 101 passing through the first string-passing hole 311 and the third string-passing hole 313 when rotating, and preventing the knitting yarn 101 from being cut off due to frictional wear. The bearing 22 of the present invention may be a deep groove ball bearing or a combination bearing, which are commonly used in the prior art, as long as the first synchronous pulley 21 connected thereto can rotate relative to the bracket 100, and the type of the bearing 22 used in the present invention is not limited.

The second embodiment of the rotating structure 20 is different from the first embodiment in that a first synchronous pulley 21 and a second synchronous pulley 23 connected by a belt are replaced by a pair of gears engaged with each other, and a lower end of one of the gears is coaxially connected with the first wire passing disc 31 or the third wire passing disc 33 is coaxially connected with the first wire passing disc 31, and an upper end thereof is coaxially connected with an inner ring of the bearing 22, and the other gear is connected with the rotating motor 26, and the rotating motor 26 drives the gears to rotate to drive the first wire passing disc 31 to rotate. Preferably, the gear connected to the bearing 22 is integrally formed or machined with an inner diameter (not shown) through which the knitting yarn 101 passes.

The third embodiment of the rotating structure 20 is different from the first embodiment in that two chain wheels connected with each other by a chain replace the first synchronous pulley 21 and the second synchronous pulley 23 connected by a belt, and the lower end of one of the chain wheels is coaxially connected with the first wire passing disc 31 or the third wire passing disc 33 is coaxially connected with the first wire passing disc 31, and the upper end thereof is coaxially connected with the inner ring of the bearing 22, and the other chain wheel is connected with the rotating motor 26, and the rotating motor 26 drives the gear to rotate to drive the first wire passing disc 31 to rotate. Preferably, the sprocket connected to the bearing 22 is integrally formed or machined with an inner diameter (not shown) through which the knitting thread 101 passes.

In the fourth embodiment of the rotating structure 20, the rotating structure 20 only includes the rotating motor 26, the rotating motor 26 is disposed on the bracket 100, and is coaxially connected to the first wire passing disc 31 or coaxially connected to the first wire passing disc 31 through the third wire passing disc 33, and the rotating motor 26 directly drives the first wire passing disc 31 to rotate (not shown in the figure). However, in this embodiment, the knitting yarn 101 introduced into the first thread passing hole 311 or the third thread passing hole 331 tends to be wound around the rotation shaft of the rotation motor 26 during the rotation of the first reel 31, so that the knitting yarn 101 cannot be smoothly introduced into the first thread passing hole 311 or the third thread passing hole 331.

Further, as shown in fig. 1, the wire feeding unit is further provided with a rotation transmission mechanism 25, and the second synchronous pulley 23 is connected with a rotation motor 26 through the rotation transmission mechanism 25.

Preferably, the first embodiment of the rotation transmission mechanism 25 is as shown in fig. 1, 3 and 4, and the rotation transmission mechanism 25 is a crank and rocker structure. Specifically, as shown in fig. 1, fig. 3 and fig. 4, the rotation transmission mechanism 25 includes a first pivot shaft 251, a first crank 252, a first link 253, a rocker 254, a second pivot shaft 255, a third pivot shaft 256 and a second pivot shaft 257, wherein the first crank 252 and the first link 253, which are pivotally connected by the first pivot shaft 251, the first link 253 and the rocker 254 are pivotally connected by the second pivot shaft 257, the first crank 252 is coaxially connected to a rotation shaft of the rotation motor 26 by the second pivot shaft 255, the rocker 254 is coaxially connected to the second timing pulley 23 by the third pivot shaft 256, the rotation motor 26 is mounted on the bracket 100, and the third pivot shaft 256 is pivotally mounted on the bracket 100. Therefore, the crank rocker structure can be driven by the rotating motor 26 to drive the second synchronous belt wheel 23 to rotate in a reciprocating manner, so that the first synchronous belt wheel 21 is driven to rotate in a reciprocating manner through the first belt 24, and the problem that the rotating motor 26 is easily damaged due to the fact that the first synchronous belt wheel 21 is directly driven to rotate in a reciprocating manner through the rotating motor 26 is solved. At this time, the rotating motor 26 does not need to be controlled by a control module, and the operation is convenient. Preferably, the first pivot shaft 251, the second rotation shaft 255, and the third rotation shaft 256 are all parallel to the rotation shaft of the second timing pulley 23.

The second embodiment of the rotation transmission mechanism 25 can also be realized by converting the rotation into the swing motion by a cam mechanism commonly used in the art to drive the first wire passing disc 31 to rotate reciprocally (not shown in the figure).

In the present embodiment, preferably, the angle of the reciprocating rotation of the second synchronous pulley 23 (i.e., the angle X of the rocking lever 254) can be controlled by adjusting the crank-rocker structure. Specifically, as shown in fig. 4, the rocker 254 is driven by the first crank 252 and the first link 253 to swing, the swinging position has a first limit position and a second limit position, and an included angle position of the rocker 254 between the first limit position and the second limit position is the swinging angle X of the rocker 254. More specifically, the first crank 252, the first link 253 and the rocker 254 are in a first extreme position as shown in solid lines in FIG. 4, and the first crank 252, the first link 253 and the rocker 254 are in a second extreme position as shown in phantom lines in FIG. 4. The swing angle X of the rocker 254 can be adjusted by adjusting the following parameters: 1. a distance L1, 2 between the axis of the second rotating shaft 255 and the axis of the first pivot shaft 251 connecting the first crank 252 and the first link 253, a distance L2, 3 between the axis of the first pivot shaft 251 connecting the first crank 252 and the first link 253 and the axis of the first pivot shaft 251 connecting the rocker 254 and the first link 253, a distance L3, 4 between the axis of the first pivot shaft 251 connecting the first link 253 and the rocker 254 and the axis of the third rotating shaft 256, and a distance L4 between the axis of the second rotating shaft 255 and the axis of the third rotating shaft 256. Specifically, when L3²-L2²＝L4²-L1²When X has a minimum value, X_min2arcs in (L1/L4); when L3 is more than or equal to L4, X is more than X_min(ii) a When L4 is constant, X increases or decreases synchronously with L1, and X decreases and increases with increasing L2 or L3.

Further, the second embodiment of the rotation transmission mechanism 25 may be combined with the first embodiment thereof to form a third embodiment thereof, in which the crank of the crank-rocker structure is driven by the cam mechanism to move, so as to drive the rocker to swing, and when the angle to be adjusted is larger, the angle to be adjusted may be adjusted by the cam mechanism, and when the angle to be adjusted is smaller, the angle to be adjusted may be adjusted by the crank-rocker structure (not shown in the figure).

As shown in fig. 6, when the knitting yarn 101 is fed to the crochet hook of the needle threading machine by using the yarn feeding unit, first, the bracket 100 is installed on the frame 200 of the needle threading machine, then, a group of fiber filaments (including a plurality of fiber filaments) originally used for forming a yarn (the common knitting yarn 101) by twisting can be directly passed through one of the first yarn passing holes 311 (when the second yarn passing disc 32 is further provided, the group of fiber filaments sequentially pass through the second yarn passing hole 321 and the first yarn passing hole 311; when the third yarn passing disc 33 is further provided, the group of fiber filaments sequentially pass through the second yarn passing hole 312, the third yarn passing hole 313 and the first yarn passing hole 311), and each group of fiber filaments respectively pass through the different first yarn passing hole 311 or second yarn passing hole 321 and first yarn passing hole 311 or second yarn passing hole 312, third yarn passing hole 313 and first yarn passing hole 311. In the process of conveying the knitting yarn 101 through the yarn passing holes (including the first yarn passing hole 311 or the second yarn passing hole 321, the first yarn passing hole 311 or the second yarn passing hole 312, the third yarn passing hole 313 and the first yarn passing hole 311), the rotating structure 20 can drive (or the rotating transmission mechanism 25 is driven by the rotating structure 20) the first yarn passing disc 31 to rotate, so as to drive the fiber yarns in the yarn passing holes to swing, all the fiber yarns in each yarn passing hole swing with the yarn passing hole as an original point, so that a plurality of fiber yarns are wound together due to mutual friction when passing through the yarn passing holes, all the fiber yarns in each yarn passing hole form a group of tightly wound fiber yarns, and the phenomenon that when a crochet needle hooks the knitting yarn 101 conveyed from the first yarn passing hole 311, only a part of the fiber yarns are hooked, so that the knitting tube 106 knitted by the crochet needle has uneven thickness is avoided; therefore, the thread feeding unit can not only convey twisted yarns to the crochet hook, but also tighten loose fiber yarns in the process of conveying loose fiber yarns which are not twisted so as to ensure that the fiber yarns conveyed to the crochet hook are in a tightly wound state, so that the use scene of the thread feeding unit is not limited by the quality of the knitting thread 101, and the knitting thread 101 does not need to be twisted before passing through the thread feeding unit, so that the production efficiency is improved, and the production cost is reduced.

Preferably, as shown in fig. 1, the thread feeding unit of the needle loom for producing a knitted tube further includes a thread releasing mechanism provided on the support 100 for feeding the thread feeding unit with the knitting thread. Specifically, the paying-off mechanism comprises a paying-off shaft 104 arranged on the support 100 and used for placing a knitting thread coil 103. A thread guide roller 102 pivotally provided on the holder 100 for feeding the knitting thread 101 on the knitting thread roll 103 to the second thread passing hole 321. Thus, the knitting yarn 101 on the knitting yarn roll 103 can be smoothly fed into the second yarn passing hole 321. In particular, the guide roller 102 may be pivotally mounted on the frame 100 by a pivotal connection commonly used in the art, such as: the holder 100 is provided with a mounting hole adapted to the first rotating shaft 1021 of the guide roller 102. Preferably, the holder 100 is formed with two mounting holes (not shown) fitted to both ends of the first rotating shaft 1021 of the guide roller 102. Thus, the knitting yarn 101 on the knitting yarn roll 103 can be smoothly fed into the second yarn passing hole 321.

Preferably, as shown in fig. 1, the rotation shaft of the first thread passing reel 31 and the payout shaft 104 are disposed in a vertical direction, and the first rotation shaft 1021 of the thread guiding roller 102 is disposed perpendicularly to the rotation shaft of the first thread passing reel 31, so that the thread roll 103 on the payout shaft 104 can smoothly feed the knitting thread 101 onto the thread guiding roller 102, and so that the thread guiding roller 102 can smoothly feed the knitting thread 101 into the first thread passing hole 311 (into the second thread passing hole 321 when the second thread passing hole 321 is also provided).

One embodiment of the knitting unit 40 as shown in fig. 5 to 8, the knitting unit 40 comprises a needle cylinder 41 integrally formed or machined with a first through hole 411 for the passage of the knitting thread 101 or the knitting tube 106, the needle cylinder 41 being provided on the frame 200; at least two crochet hooks 42 which are arranged along the periphery of the needle cylinder 41 at intervals and are used for knitting the knitting thread 101 into a knitting tube 106, and the distance between the crochet hooks 42 and the rotating shaft of the first thread passing disc 31 is less than the distance between the first thread passing hole 311 and the rotating shaft of the first thread passing disc 31; and a moving mechanism 43 provided on the hook needle 42. The wire feeding unit is the wire feeding unit and is arranged at the front end of the first through hole 411; the moving mechanism 43 is provided to be able to drive the crochet needle 42 to reciprocate in the axial direction of the first through hole 411 to approach or separate from the thread feeding unit. Preferably, the movement mechanism 43 is provided on the needle cylinder 41, the needle cylinder 41 is detachably connected to the frame 200, so that the knitting unit 40 is integrated, and to connect or disconnect the knitting unit 40 to the frame 200, it is only necessary to connect or disconnect the needle cylinder 41 to the frame 200, so that the knitting unit 40 can be quickly mounted to and dismounted from the frame 200.

Preferably, the barbed needles 42 are circumferentially distributed.

When the needle threading machine is used, the thread ends of knitting threads 101 for knitting respectively and sequentially pass through the first thread passing holes 311 on the first thread passing discs 31 according to the thread using number of the needle threading machine (when the second thread passing discs 32 are further provided, a group of fiber threads sequentially pass through the second thread passing holes 321 and the first thread passing holes 311; when the third thread passing discs 33 are further provided, a group of fiber threads sequentially pass through the second thread passing holes 312, the third thread passing holes 313, the first thread passing holes 311), the crochet needles 42 and the first through holes 411. According to two driving conditions of the rotating motor 26 (the first driving condition is that the rotating motor 26 drives the rotating transmission mechanism 25 to drive the first wire passing disc 31 to rotate in forward and reverse directions alternately, and the second driving condition is that the rotating motor 26 directly drives the first wire passing disc 31 to rotate, and the rotating direction is unchanged), there are two operation methods: a first operating method corresponding to a first driving situation: the moving mechanism 43 drives the crochet hook 42 to reciprocate once along the axial direction of the first through hole 411, the rotating motor 26 drives the rotating transmission mechanism 25 to drive the first wire passing disc 31 to rotate around the axial line of the first through hole 411 in one direction (positive direction or reverse direction), and the moving mechanism 43 drives the corresponding rotating motor 26 of the crochet hook 42 to reciprocate adjacent times to drive the rotating transmission mechanism 25 to drive the first wire passing disc 31 to rotate in different directions, or the rotating motor 26 is set to be capable of directly driving the first wire passing disc 31 to rotate in positive direction and reverse direction alternately; the second operation method corresponding to the second driving case is different from the first operation method in that the rotating motor 26 always drives the first wire passing disc 31 to rotate around the axis of the first through hole 411 in one direction, and at this time, the rotating motor 26 is provided so as to drive the first wire passing disc 31 to rotate in the forward direction or in the reverse direction. One specific implementation of the first method of operation is as follows: while or after the moving mechanism 43 drives the crochet hook 42 to move towards the side where the thread feeding unit is located, the rotating transmission mechanism 25 is driven by the rotating motor 26 to drive the first thread passing disc 31 to rotate forward (or rotate reversely or stop driving), so that the crochet hook 42 is pushed out from the top of the needle cylinder 41 (the top of the needle cylinder 41 is the end part of the needle cylinder 41 facing the thread feeding unit) under the drive of the moving mechanism 43, when the crochet hook 42 is closest to the thread feeding unit (the crochet hook 42 does not contact the first thread passing disc 31 yet), and the first thread passing disc 31 drives the knitting thread 101 on one side of the crochet hook 42 to swing under the drive of the rotating transmission mechanism 25 driven by the rotating motor 26 until the knitting thread 101 on the side is attached to the outer side of the crochet hook 42; then, the moving mechanism 43 drives the crochet hook 42 to move downwards, when the crochet hook 42 moves downwards, the crochet hook can hook the knitting thread 101 attached to the outer side of the crochet hook and drive the knitted thread 101 hooked by the crochet hook to move downwards together, when the crochet hook 42 moves to the farthest position away from the thread feeding unit, the crochet hook 42 is positioned below the top of the needle cylinder 41, at this time, the crochet hook 42 completely passes through the annular knitted fastener formed by the previous knitting; then, the knitting thread 101 or the knitting tube 106 in the first through hole 411 can be pulled toward the side away from the thread feeding unit by a person or a pulling unit 80 outside the needle loom; while or after the moving mechanism 43 drives the crochet hook 42 to move towards the side where the thread feeding unit is located again, the rotating transmission mechanism 25 is driven by the rotating motor 26 to drive the first thread passing disc 31 to rotate towards the opposite direction or rotate towards the same direction or stop rotating, while the crochet hook 42 extends out of the top of the needle cylinder 41, the knitting thread 101 on the crochet hook 42 is left at the top of the needle cylinder 41 to form a new annular knitting button, and the knitting thread 101 on the other side of the crochet hook 42 is driven by the first thread passing disc 31 under the driving of the rotating transmission mechanism 25 driven by the rotating motor 26 to swing until the knitting thread 101 on the side is attached to the outer side of the crochet hook 42; then, the moving mechanism 43 drives the crochet hook 42 to drive the knitting thread 101 which is hooked by the crochet hook and attached to the outer side of the crochet hook to move to the position farthest away from the thread feeding unit, and at this time, the crochet hook 42 completely passes through the annular knitting buckle formed by the previous knitting; then, the knitting thread 101 or the knitting tube 106 in the first through hole 411 is pulled toward the side away from the thread feeding unit by a drawing unit 80 outside the manual or needle punch; while or after the moving mechanism 43 drives the crochet hook 42 to move towards the side where the thread feeding unit is located, the rotating motor 26 drives the rotating transmission mechanism 25 to drive the first thread passing disc 31 to rotate towards the opposite direction of the previous time or rotate towards the same direction or stop rotating, and the single-layer knitted tube 106 with the set length and the interlaced grid structure of the knitting threads 101 can be knitted by repeating the actions; meanwhile, the knitting yarns 101 of the knitted tube 106 are in a staggered grid structure, and the knitting tube 106 is structured such that the annular knitting buckles formed by one knitting yarn 101 are nested in the annular knitting buckles formed by the other knitting yarn 101, so that the annular knitting buckles on different knitting yarns 101 can slide mutually in the stretching process of the knitted tube 106, and the knitted tube 106 can stretch and retract. In addition, in the course of using the needle loom, the number of the knitting yarn 101 and the crochet hook 42 can be adjusted as necessary, that is, the knitting yarn 101 does not necessarily pass through all the first yarn passage holes 311, and thus the knitting tube 106 with the set number of the knitting yarns and the adjustable density can be knitted.

Preferably, as shown in fig. 6 to 9, the end of the crochet hook 42 facing the thread feeding unit is integrally formed, processed or connected with a thread hook, a crochet hook opening 422 is integrally formed or processed on the thread hook, and the crochet hook opening 422 is disposed facing the side facing away from the thread feeding unit, so that the crochet hook 42 can hook the knitting thread 101 to move together when moving towards the side facing away from the thread feeding unit under the driving of the moving mechanism 43.

Further, as shown in fig. 9, the specific structure of the crochet hook 42 is that a sealing rod 423 is further disposed on the crochet hook 42, the sealing rod 423 is pivotally connected to a side, away from the thread feeding unit, of a crochet hook opening 422 of the crochet hook 42 through a third pivot 424, the sealing rod 423 is configured to rotate relative to the crochet hook 42 by using the third pivot 424 as a rotation shaft, and when the sealing rod 423 can rotate towards the side where the thread feeding unit is located until the crochet hook opening 422 is sealed. Specifically, the third pivot shaft 424 is disposed perpendicular to the moving direction of the moving mechanism 43. The sealing rod 423 is further configured such that when the sealing rod 423 rotates to seal the crochet hook opening 422, a free end of the sealing rod 423 inclines towards a side away from the crochet hook 42, so that the crochet hook 42 moves towards the thread feeding unit under the driving of the moving mechanism 43, and when passing through the circular knitting fastener left at the top of the needle cylinder 41, the circular knitting fastener can drive the sealing rod 423 to rotate towards a side away from the thread feeding unit, so that the sealing rod 423 opens the crochet hook opening 422.

Preferably, as shown in fig. 9, in order to move the crochet hook 42 to the top of the needle cylinder 41, the annular knitted fastener knitted last time on the top of the needle cylinder 41 can smoothly drive the sealing rod 423 to rotate towards the side where the thread feeding unit is located, so that the sealing rod 423 seals the crochet hook opening 422, thereby avoiding that the crochet hook 42 hooks the annular knitted fastener on the top of the needle cylinder 41 in the process of moving to the position farthest from the thread feeding unit, and the knitting process cannot be smoothly performed. An arc-shaped groove 425 is integrally formed or machined on one side, away from the thread feeding unit, of the crochet hook 42, the arc-shaped groove 425 is formed on one side, away from the needle cylinder 41, of the crochet hook 42, when the needle cylinder 41 is placed in the vertical direction, the arc-shaped groove 425 is located below the third pivot 424, and the groove bottom of the arc-shaped groove 425 is located on one side, close to the needle cylinder 41, of the third pivot 424.

Preferably, as shown in fig. 6 to 9, the side of the crochet hook 42 provided with the arc-shaped groove 425 extends outwards to form a protrusion 427, the third pivot shaft 424 is pivotally provided on the protrusion 427, a receiving groove 426 for receiving the sealing rod 423 is integrally formed or machined on the side of the protrusion 427 on the same side as the crochet hook 42 provided with the arc-shaped groove 425, the groove bottom of the receiving groove 426 is located on the outer side of the arc-shaped groove 425 (i.e. the side facing away from the crochet hook 42 or the needle cylinder 41), to ensure that the sealing rod 423 will not be attached to the outside of the arc-shaped groove 425 (i.e. the side away from the beard needle 42 or the needle cylinder 41) when the sealing rod 423 rotates to the limit position away from the beard needle opening 422, so that when the crochet hook 42 moves to the top of the needle cylinder 41, the last knitted annular knitted buckle on the top of the needle cylinder 41 can smoothly drive the sealing rod 423 to rotate towards the side where the thread feeding unit is located, so that the sealing rod 423 blocks the crochet hook opening 422.

Further, as shown in fig. 5 to 7 and 12, a sealing rod driving structure is disposed between the needle cylinder 41 and the first wire passing disc 31, the sealing rod driving structure is fixedly disposed on the support 100 or the first wire passing disc 31, and the sealing rod driving structure is configured to drive the sealing rods 423 to rotate toward a side away from the wire feeding unit when the crochet hook 42 contacts with the wire feeding unit during the movement toward the wire feeding unit under the driving of the moving mechanism 43 until the sealing rods 423 move to a position where the free ends of the sealing rods 423 are farthest away from the wire feeding unit, so as to ensure that all the sealing rods 423 are opened from the crochet hook openings 422 after the sealing rods 423 contact with the sealing rod driving structure. Specifically, seal pole drive structure for locating piece 50, integrated into one piece or processing have the third through-hole 51 that supplies crochet hook 42 to pass through on the locating piece 50, and set up to, when sealing pole 423 blocks up crochet hook opening 422, the free end of sealing pole 423 is located the one side that deviates from syringe 41 of the inner wall of third through-hole 51. When the crochet hook 42 moves towards the wire feeding unit under the driving of the moving mechanism 43 and passes through the third through hole 51 of the positioning block 50, the positioning block 50 can block the sealing rod 423 and urge the sealing rod 423 to rotate towards the direction away from the wire feeding unit. The positioning block 50 plays a safety role, and can ensure that the sealing rod 423 rotates to one side away from the thread feeding unit to completely open the crochet hook opening 422, so as to hook threads next. Preferably, the positioning block 50 is a circular ring to simplify the driving structure of the sealing rod, the circular ring is fixed on the bracket 100 or the first wire passing disc 31 through the second connecting rod 52, the circular ring is fixedly connected with the second connecting rod 52, and the second connecting rod 52 is fixedly connected with the bracket 100 or the first wire passing disc 31. In use, in order to avoid the second connecting rod 52 from obstructing the deflection of the knitting thread 101, the knitting thread 101 delivered to the crochet hook 42 by the thread feeding unit passes through the third through hole 51; moreover, since the knitting yarn 101 before being fed to the crochet needle 42 needs to pass through the third through hole 51, therefore, the knitting thread 101 between the circular ring and the needle cylinder 41 is located inside the needle hooking opening 422 of the needle hooking 42, the needle hooking 42 does not catch the knitting thread 101 before passing through the circular ring, and since the outside of the portion of the crochet hook 42 provided with the crochet hook opening 422 is positioned inside the third through hole 51, the crochet hook 42 can pass through the third through hole 51 by the driving of the moving mechanism 43, and then, since the distance between the first threading hole 311 and the axis of the first threading disc 31 is greater than the distance between the crochet hook 42 and the axis of the first threading disc 31, the first threading disc 31 can carry the knitting thread 101 on one side of the crochet hook 42 to swing in the rotating structure 20 until the knitting thread 101 is attached to the outer side of the crochet hook 42 passing through the third through hole 51, so that the crochet hook 42, while being moved towards the side of the needle cylinder 41 by the moving mechanism 43, forms a hook for the knitting thread 101 abutting on the outside thereof.

Preferably, as shown in fig. 6 to 9, the outer side surface of the projection 427 is located inside the surface (i.e., the side facing the crochet hook 42 or the cylinder 41) which is in contact with the crochet hook 42 when the seal rod 423 blocks the crochet hook opening 422, and the outer side surface of the seal rod 423 is located inside the outer side surface of the projection 427 when the crochet hook 42 is rotated back from the crochet hook opening 422 to the limit position. To ensure that the closing rod 423 does not obstruct the crochet hook 42 from passing through the third through hole 51.

In other embodiments, the knitting unit 40 can also use other knitting units that knit a knitting thread out of a knitted tube, which are commonly used in the art.

In other embodiments, the needle loom can also use other thread-feeding units that feed the knitting unit 40 with knitting thread, as is common in the art.

The inventor finds in the production research and development process that the area occupied by the general knitting unit 40 is large because the crochet hook 42 in the general knitting unit 40 is horizontally arranged, and because the crochet hook 42 is horizontally arranged, the area occupied by the crochet hook 42 arranged along the circumferential direction and the driving device and the transmission device thereof is large, and a plurality of sets of knitting units 40 cannot be easily arranged on one knitting machine.

The problem that in a general situation, only one set of knitting unit 40 can be installed in a matched manner on one needle punching machine, so that when a plurality of needle punching machines work simultaneously, each needle punching machine needs to be responsible by at least one technician, and the production cost is high is solved; if a technician is responsible for many needle logical machines, need to walk reciprocal between many needle logical machines, there is the problem that the technician consumes physical power big, and energy dispersion easily leads to making mistakes. According to one aspect of the present invention, a knitting unit 40 is provided, as shown in fig. 5 to 7, the needle cylinder 41 of which knitting unit 40 is arranged with its first through hole 411 arranged in the vertical direction. Because the first through hole 411 of the needle cylinder 41 of the knitting unit 40 is vertically arranged, the crochet hook 42 slides up and down under the driving of the moving mechanism 43, the occupied area of the knitting unit 40 in the horizontal direction is reduced, and a plurality of sets of knitting units 40 are conveniently arranged on one knitting machine, so that a plurality of sets of knitting units 40 on one knitting machine can be watched by one technician, the labor cost is greatly saved, the technician does not need to run around during working, the technician can save physical strength and concentrate on the mental work, the error probability is reduced, and the product quality is improved; meanwhile, as a plurality of sets (for example, 6 or more) of knitting units 40 are arranged on one needle punching machine, one needle punching machine can simultaneously produce a plurality of knitting tubes 106 (two, three, six, ten or the like), so that the production efficiency is high, and the production cost is low; it is also possible to knit different gauges of different types of knit tubes 106 simultaneously by providing different gauges of different types of knit units 40 on one needle loom.

Preferably, since the first through hole 411 of the needle cylinder 41 is vertically disposed, when the sealing rod 423 rotates to seal the crochet hook opening 422 and the free end of the sealing rod 423 inclines to the side away from the crochet hook 42, the distance between the center of gravity of the sealing rod 423 and the axis of the first through hole 411 is greater than the distance between the third pivot 424 and the axis of the first through hole 411, so as to form a moment that the sealing rod 423 rotates away from the thread feeding unit to open the crochet hook opening 422, so that when no external force acts on the sealing rod 423, the sealing rod 423 rotates away from the thread feeding unit to ensure that the crochet hook opening 422 is in an open state, so that when the moving mechanism 43 drives the crochet hook 42 to extend out from the top of the needle cylinder 41, the knitting thread 101 on the crochet hook 42 moves out of the crochet hook opening 422, and a new circular knitting fastener is formed on the top of the needle cylinder 41. Specifically, as shown in fig. 9, when the sealing rod 423 blocks the crochet hook opening 422, the side surface of the sealing rod 423 facing the crochet hook 42 abuts against the crochet hook 42, and the position of the crochet hook 42 contacting with the sealing rod 423 is located on the side of the third pivot 424 away from the needle cylinder 41, so that when the sealing rod 423 blocks the crochet hook opening 422, the sealing rod 423 has a moment of rotating away from the thread feeding unit to open the crochet hook opening 422. Preferably, and with continued reference to fig. 9, the sealing rod 423 is configured with a wide pivoting connection and a narrow free end to increase the tendency of the sealing rod 423 to rotate away from the thread feeding unit to open the barbed needle opening 422 when the sealing rod 423 is sealed over the barbed needle opening 422. Further, the sealing rod 423 is configured such that, when it rotates to a position where the free end is farthest from the thread feeding unit, the distance between the side of the sealing rod 423 facing the hook needle 42 and the axis of the first through hole 411 increases gradually from the connection point of the sealing rod 423 and the hook needle 42 to the free end, so that the hook needle 42 moves to the top of the needle cylinder 41, and the annular knitted fastener knitted last time on the top of the needle cylinder 41 can smoothly drive the sealing rod 423 to rotate toward the side where the thread feeding unit is located, so that the sealing rod 423 seals the hook needle opening 422.

Although the moment of force of the closing lever 423 being located at the side of the crochet hook opening 422 facing away from the needle cylinder 41 by its own center of gravity can automatically rotate to the side away from the thread feeding unit to open the crochet hook opening 422, when there is resistance (for example, when the third pivot shaft 424 rotates unsmoothly relative to the crochet hook 42), the crochet hook opening 422 cannot be opened completely, and at this time, since the closing lever driving structure is provided, it can be ensured that the crochet hook opening 422 is opened completely before the crochet hook 42 hooks the knitting thread 101.

As shown in fig. 6 and 7, the moving mechanism 43 includes at least two sliding grooves 432 and a first sliding block 431, the sliding grooves 432 are integrally formed or machined on the outer circumferential surface of the needle cylinder 41, the sliding grooves 432 extend in the axial direction of the needle cylinder 41, all the sliding grooves 432 are arranged at intervals in the circumferential direction of the first through hole 411 of the needle cylinder 41, one end of the sliding grooves 432 facing the thread feeding unit communicates with the outside, and the crochet hook 42 is arranged on the first sliding block 431. Preferably, the first slider 431 is integrally formed with the crochet hook 42, and the processing is convenient. Preferably, the chutes 432 are evenly distributed around the outer circumference of the cylinder 41. Preferably, the crochet hook 42 is adapted to the sliding groove 432, so that when the transfer mechanism drives the crochet hook 42 to reciprocate along the extending direction of the sliding groove 432, the sliding groove 432 can limit the moving direction of the crochet hook 42, avoid the swing of the crochet hook 42 during moving, ensure the uniformity of the texture of the knitted tube 106 knitted by the crochet hook 42, and ensure the knitting quality of the knitted tube 106.

Preferably, as shown in fig. 6 and 7, the moving mechanism 43 further includes a sliding ring 433 disposed on the outer circumference of the needle cylinder 41, and all the hooks 42 or the first sliding blocks 431 are connected to the sliding ring 433. Preferably, the latch 42 is detachably connected to the slide ring 433, and the detachable connection may be, for example, a snap connection, a screw connection, etc. commonly used in the art. Thus, it is possible to arrange different numbers of the crochet hooks 42 on the outer circumference of the needle cylinder 41 as required to knit the knitted tubes 106 of different densities; the density of the crochet hook 42 in different positions can also be adjusted to adjust the knitting density in different parts of the same knitted tube 106.

The specific snap-fit connection is as follows: in the first embodiment of the sliding ring 433, as shown in fig. 6 and 7, a syringe passing hole 4331 for passing through the syringe 41 is integrally formed or machined on the sliding ring 433, an axis of the syringe passing hole 4331 is parallel to an axis of the first through hole 411, an annular groove 4332 adapted to the clamping portion 421 is integrally formed or machined on an inner wall of the sliding ring 433 provided with the syringe passing hole 4331, the clamping portion 421 of the bearded needle 42 is adapted to the annular groove 4332 of the sliding ring 433, and the clamping portion 421 and the bearded needle opening 422 are provided on the same side of the bearded needle 42, so that the bearded needle 42 is adapted to the sliding ring 433 through the clamping portion 421. During the installation, earlier with the crochet hook 42 block on the sliding ring 433, then establish the sliding ring 433 cover that the block has crochet hook 42 on syringe 41, with the crochet hook 42 block between sliding ring 433 and syringe 41, thereby realize being connected with dismantling of crochet hook 42 and sliding ring 433, the connection process need not to use connecting tool, convenient operation is swift, when the sliding ring 433 cover is established on the outside of syringe 41, crochet hook opening 422 orientation of crochet hook 42 deviates from the one side setting at syringe 41 place, when the axis (also the axis of first through-hole 411) reciprocating motion sliding ring 433 along syringe 41, can drive crochet hook 42 along the axis reciprocating motion of syringe 41 together.

In the second embodiment of the sliding ring 433, the sliding ring 433 may be formed by an upper sliding ring 433 and a lower sliding ring 433 detachably connected to each other, and the annular groove 4332 is disposed at the joint of the upper sliding ring 433 and the lower sliding ring 433 to facilitate the processing (not shown in the figure) of the annular groove 4332.

In the third embodiment of the sliding ring 433, the sliding ring 433 is a circular ring provided with a radial opening 4333, an annular groove 4332 is integrally formed or machined on the inner wall of the circular ring, the radial opening 4333 extends in the radial direction of the sliding ring 433 to penetrate one side of the sliding ring 433, and the width of the radial opening of the circular ring is greater than the width of the crochet hook 42 and is smaller than the sum of the wall thickness between two adjacent sliding grooves 432 and the width of one sliding groove 432. Preferably, the radial opening 4333 extends the slide ring in the axial direction of the syringe-passing hole 4331. When in use, the circular ring is firstly sleeved on the periphery of the needle cylinder 41, then the circular ring is rotated to enable the radial opening of the circular ring to be aligned with one sliding chute 432 on the needle cylinder 41, and then the crochet hook 42 is loaded into the sliding chute 432 through the radial opening of the circular ring; then the circular ring is rotated until the radial opening of the circular ring is aligned with the second sliding groove 432 of the needle cylinder 41, and then the crochet hook 42 is loaded until the crochet hooks 42 are all installed in the sliding grooves 432 where the crochet hooks 42 need to be installed; finally, the ring is rotated until its radial opening is offset from the slot 432 of the needle cylinder 41, so that the needle 42 is mounted on the needle cylinder 41, and after the mounting, the needle 42 cannot slip out of the ring (not shown).

Preferably, as shown in fig. 6 to 8, the front end of the slide groove 432 communicates with the outside. Thus, the crochet hook 42 can be extended from one end of the chute 432 communicating with the outside by being driven by the moving mechanism 43 to hook the knitting yarn 101 for knitting; and since the other end of the sliding groove 432 is not communicated with the outside, the crochet hook 42 can be prevented from slipping out of the sliding groove 432.

In a second embodiment of the moving mechanism 43, the moving mechanism 43 is an oil cylinder, a cylinder body of the oil cylinder is mounted on the frame 200 or the needle cylinder 41, the crochet hook 42 (or the crochet hook 42 is mounted on a piston rod through a slip ring 433), and the crochet hook 42 is driven by the oil cylinder to reciprocate (not shown) along an axis of the first through hole 411 of the needle cylinder 41.

The third embodiment of the moving mechanism 43 can also be realized by converting the rotation into the movement by a cam mechanism commonly used in the prior art to drive the crochet hook 42 to rotate reciprocally (not shown in the figure).

When the mobile driving mechanism 44 and the rotary transmission mechanism 25 are both driven by the rotary motor 26, the mobile driving mechanism can be driven only by electric power without hydraulic driving, and the driving energy is simple and convenient for management and control.

Preferably, as shown in fig. 6 and 8, a collar is further sleeved on the outer periphery of the needle cylinder 41, and the collar is sleeved at a position close to the top of the needle cylinder 41, so as to avoid a large swing of the crochet needle 42 during the moving process, and ensure the knitting stability.

Further, as shown in fig. 5 to 7 and 11, the needle punching machine is further provided with a movement driving mechanism 44, the sliding ring 433 or the sliding block is provided on the frame 200 (or on the needle cylinder 41) through the movement driving mechanism 44, and the moving mechanism 43 drives the moving mechanism 43 through the movement driving mechanism 44 to drive the crochet hook 42 to reciprocate along the axial direction of the first through hole 411. The movement drive mechanism 44 may also be connected to a drive device, which may be a rotary motor 26.

One embodiment of the movement drive mechanism 44 is shown in fig. 5-7 and 11, the movement drive mechanism 44 being of a crank-slider configuration. Specifically, the movement driving mechanism 44 includes a second crank 441, a second link 442, and a second slider 443 that are pivotally connected in this order by a fourth pivot shaft 445; a fourth rotating shaft 444 connecting the second crank 441 to the rotating shaft of the rotating motor 26; a guide rail 446 which is matched with the second sliding block 443, wherein the guide rail 446 is arranged along the axial direction of the first through hole 411, and the guide rail 446 is fixedly arranged on the rack 200; the fourth rotating shaft 444 and the fourth pivoting shaft 445 are disposed perpendicular to the first through hole 411; the crochet hook 42 is provided on the second slider 443. When the needle navigation machine further comprises a slip ring 433, the bearded needle 42 is connected with the second slider 443 through the slip ring 433. So that the crank-slider structure can be driven by rotating the motor 26 to reciprocate the crochet hook 42 in the axial direction of the first through hole 411. The distance that the movement driving mechanism 44 drives the crochet hook 42 to move can be adjusted by adjusting the distance between the fourth rotating shaft 444 and the fourth pivot shaft 445 connected to the second crank 441, specifically, twice the distance between the fourth rotating shaft 444 and the fourth pivot shaft 445 connected to the second crank 441 is the distance that the movement driving mechanism 44 drives the crochet hook 42 to move. When the fourth pivot shaft 445 connected to the second crank 441 moves to an end away from the wire feeding unit, the second slider 443 moves to a position farthest from the wire feeding unit (as shown in fig. 6); . When the fourth pivot shaft 445 connected to the second crank 441 is moved to the end nearest to the thread feeding unit, the second slider 443 is moved to the position nearest to the thread feeding unit (as shown in fig. 7), i.e., fig. 6 and 7 show two movement limit positions of the crochet needle 42 by the movement driving mechanism 44. Preferably, as shown in fig. 6 and 7, the guide rail 446 is integrally formed with the needle cylinder 41, so that the guide rail 446 is not required to be separately provided, and the structure of the needle loom is simplified.

Preferably, the second crank 441 is further connected to the manual operating handle 45, and the connection between the two is set to enable the second crank 441 to rotate by rotating the manual operating handle 45. Therefore, the second crank 441 can be driven to drive the sliding ring 433 to reciprocate along the axis of the first through hole 411 by rotating the manual operating handle 45, so as to perform the operations of trial run, detection, threading and the like by hand. Specifically, the moving mechanism 43 is connected to the manual operating handle 45 and the rotating motor 26 through the transmission mechanism 90, the transmission mechanism 90 may adopt a common synchronous pulley structure or a chain wheel structure in the prior art, and the specific structure of the transmission mechanism 90 is not limited in the present invention as long as the power of the manual operating handle 45 and the rotating motor 26 can drive the crank-slider structure to move through the transmission mechanism 90.

Preferably, the needle cylinder 41 is detachably connected to the frame 200, and since the moving mechanism 43 is disposed on the needle cylinder 41, that is, the knitting unit 40 includes the moving mechanism 43, when the moving driving mechanism 44 is not disposed, the knitting unit 40 can be quickly detached from and connected to the frame 200 by detaching or connecting the needle cylinder 41 to the frame 200; moreover, since a plurality of knitting units 40 can be provided on one knitting machine, knitting units 40 of various specifications can be provided on one knitting machine, and the specifications of the knitting units 40 can be distinguished by the diameter of the needle cylinder 41, specifically, by the distance between the crochet needle 42 and the axis of the first through hole 411 of the needle cylinder 41, so that it is possible to knit knitted tubes 106 of different diameters simultaneously on the same knitting machine by providing knitting units 40 of different specifications on the same knitting machine. When the movement driving mechanism 44 is further provided, the quick detachment and attachment of the knitting unit 40 to the frame 200 can be achieved by detaching or attaching the needle cylinder 41 to the frame 200 while detaching or attaching the crochet needle 42 or the slip ring 433 to the movement driving mechanism 44. In particular, the connection of the needle cylinder 41 to the frame 200 and the connection of the crochet hook 42 or the slip ring 433 to the movement drive mechanism 44 are a threaded connection, more particularly by means of screws.

Preferably, the rotation transmission mechanism 25 and the movement driving mechanism 44 are connected through a transmission mechanism 90 to form a synchronous rotation movement unit, and the transmission mechanism 90 drives the rotation transmission mechanism 25 and the movement driving mechanism 44 to have a transmission ratio of 1: 2, so that when the rotation transmission mechanism 25 drives the first thread passing disk 31 to rotate back and forth once, the movement driving mechanism 44 drives the crochet hook 42 to move back and forth twice, thereby synchronously driving the first thread passing disk 31 and the crochet hook 42 to move through one rotation motor 26. Further, a manual operating handle 45 is also connected to the transmission mechanism 90 for manual operation such as trial running, inspection and threading. Furthermore, the rotating motor 26 is also connected with the rotating motor 26, so as to save energy consumption and reduce production cost.

Preferably, as shown in fig. 6, the needle loom further includes a drawing unit 80 for drawing out the knitted tube 106 knitted by the crochet needle 42 from the end of the needle cylinder 41, the drawing unit 80 being provided at the rear end of the needle cylinder 41. Since the needle machine is further provided with the traction unit 80, the work flow of the needle machine is slightly different from that of the previous needle machine, and the difference is only that: when the crochet hook 42 passes through the annular knitting buckle formed by the last knitting, the traction unit 80 is used for replacing the manual work, and the knitting thread 101 output by the needle cylinder 41, the single-layer knitting tube 106 or the double-layer telescopic tube is driven to move to the side departing from the thread feeding unit, so that the crochet hook 42 is separated from the annular knitting buckle.

Specifically, as shown in fig. 6, the drawing unit 80 includes a driving roller 81 driven by the rotation motor 26, a driven roller 83 abutting against the driving roller 81 for drawing the knitted tube 106, and a plurality of guide rollers 82 or guide shafts 84 for guiding the knitted tube 106, and the guide shafts 84 and 82 are provided between the needle cylinder 41 and the driving roller 81 to guide the running direction of the tube.

In other embodiments, the drawing unit 80 can also adopt other drawing devices commonly used in the art, capable of drawing the thread or tube of single-layer knitting, in which there are rollers or spindles for drawing the thread or tube of single-layer knitting out of the needle cylinder, and which rotate around their spindles driven by a power device.

The common needle machine can not directly produce the double-layer extension tube with the elastic inner tube, the double-layer extension tube produced in the prior art needs to manually penetrate the elastic tube 61 in the knitted tube 106, and the longest length of the produced double-layer extension tube does not exceed 15 meters due to condition limitation, which brings inconvenience to users needing the double-layer extension tube with larger length; in addition, by manually inserting the elastic tube 61, the elastic tube 61 is inevitably provided with a plurality of wrinkles and remaining knitted tubes 106, which results in a large amount of waste of the knitted tubes 106 and also in an unattractive appearance; sometimes, in order to obtain a double-layer telescopic pipe with a long length, the double-layer telescopic pipe with the short length needs to be connected through a joint, so that the production efficiency is low, and the production cost of the manufactured double-layer telescopic pipe is high. The general needle machine can not directly produce the wear-resistant double-layer telescopic pipe of the elastic telescopic pipe for protecting the knitted pipe 106 at the outer part of the knitted pipe 106, the general needle machine can not directly produce the three-layer telescopic wear-resistant water pipe of the elastic telescopic pipe for protecting the knitted pipe 106 at the inner part of the knitted pipe 106 with the elastic pipe 61 and the outer part of the knitted pipe 106, when the prior art is adopted to produce the wear-resistant double-layer telescopic pipe or the three-layer telescopic wear-resistant water pipe, the produced knitted pipe 106 or the double-layer telescopic water pipe needs to be fed again, the elastic telescopic pipe is extruded and formed, the traction and other processes consume a large amount of manpower and material resources, and similarly, the length of the produced wear-resistant double-layer telescopic pipe or the produced wear-resistant three-layer telescopic water pipe is limited by the original knitted pipe 106 or the original double-layer telescopic water pipe, the length of the produced wear-resistant double-layer telescopic pipe or the produced wear-resistant three-layer telescopic water pipe does not exceed 15 meters, and the requirements of users needing the wear-resistant double-layer telescopic pipe or the.

In order to solve the problem that the conventional needling machine cannot directly produce the double-layer telescopic water pipe with the elastic pipe 61 arranged in the knitting pipe 106, as shown in fig. 6, the needling machine further comprises a material conveying unit 60 for conveying the elastic pipe 61 into the knitting pipe 106 knitted by the crochet needle 42, and the material conveying unit 60 is arranged at the front end of the knitting unit 40.

In order to solve the problem that the general needle machine cannot directly produce the wear-resistant double-layer telescopic tube in which the knitted tube 106 is externally provided with the elastic telescopic tube, as shown in fig. 6, the needle machine further comprises an outer tube forming machine 70 for forming an outer tube 107 outside the knitted tube 106 output from the needle cylinder 41 or a coating machine for coating the outer surface of the knitted tube 106 output from the needle cylinder 41 while not providing the feed unit 60, and the outer tube forming machine 70 or the coating machine is provided at the rear end of the needle cylinder 41.

In order to solve the problem that the common needle punching machine cannot directly produce a three-layer telescopic wear-resistant water pipe with an elastic pipe 61 arranged in a knitting pipe 106 and an elastic telescopic pipe arranged outside the knitting pipe 106, as shown in fig. 6, the needle punching machine further comprises a material conveying unit 60 used for conveying the elastic pipe 61 into the knitting pipe 106 knitted by a crochet needle 42, wherein the material conveying unit 60 is arranged at the front end of the knitting unit 40; and an outer tube forming machine 70 for forming an outer tube 107 outside the knitted tube 106 delivered from the needle cylinder 41 or a coating machine for coating a coating layer on the outside of the knitted tube 106 delivered from the needle cylinder 41, the outer tube forming machine 70 or the coating machine being provided at the rear end of the needle cylinder 41. Among them, the outer tube 107 covering the outer periphery of the knitted tube 106 can reduce friction of the knitted tube 106 with the outside or can keep the surface of the knitted tube 106 clean.

In the present embodiment, the outer tube forming machine 70 may employ an apparatus for forming an outer tube in the related art, and the coating machine may also employ a coating machine for applying a fluid to the surface of a product, which is commonly used in the related art.

Specifically, in some embodiments, the feeding unit 60 is a support frame on which the elastic tube 61 is wound, so that the elastic tube 61 can rotate around the support frame, and thus the elastic tube 61 can be continuously fed into the knitted tube 106 under the traction of the traction unit 80. Further, in order to facilitate the rotation of the elastic tube 61, a rotating shaft for winding the elastic tube may be pivotally connected to the supporting frame. In other embodiments, delivery unit 60 is a plastic extruder, as is commonly used in the art for forming elastomeric tube 61.

When the needle loom includes the feed conveyor unit 60 for feeding the elastic tube 61 into the knitting tube 106 knitted by the crochet needle 42, it is possible to directly produce a double-layered telescopic water pipe with an elastic tube 61 (for example, latex tube) inside, the crochet needle 42 directly knits the knitted tube 106 outside the elastic tube 61, thereby being capable of manufacturing double-layer telescopic water pipes with any length according to the requirement, and the knitted pipe 106 is evenly distributed on the surface of the elastic pipe 61, thereby not causing the knitted pipe 106 to form redundant wrinkles on the elastic pipe 61, saving the using amount of the knitted pipe 106, taking the diameter of 16mm as an example, the polyester yarn used per meter is saved by more than 2 g (because the elastic tube 61 is manually penetrated, the wrinkles of the outer layer are more, the used length is large, 10 g of the polyester yarn is used per meter, and the existing product has no wrinkles and the polyester yarn used per meter is less than 8 g), so that the weight of the product is reduced, and the raw material cost is greatly saved; meanwhile, a double-layer telescopic water pipe with a longer length is formed without being connected through a connector, so that the weight of the double-layer telescopic water pipe is reduced, and the production cost is saved; the double-deck flexible water pipe that makes can be in elasticity pipe 61 such as latex tube water, because latex tube has elasticity, under the pressure effect of letting in its inside water, latex tube can stretch out and draw back, and water can stretch out and draw back in step with latex tube because knitting 106 wraps up in latex tube outside, avoids latex tube because of wearing and tearing with outside direct contact, improves the life of double-deck flexible pipe.

When the needle punch includes the outer tube forming machine 70 for forming the outer tube 107 outside the knitted tube 106 delivered from the needle cylinder 41, this outer tube forming machine 70 may be a needle punch similar to or the same as the needle punch of the present invention, may be a plastic extruder commonly used in the art for extrusion-forming a plastic tube or a plastic film tube, may be a metal tube knitting machine commonly used in the art, and thereby, a double-layer wear-resistant tube having the knitted tube 106 as the inner layer and the knitted tube 106 or the metal knitted tube as the outer layer, or a double-layer wear-resistant waterproof tube having the knitted tube 106 as the inner layer and the plastic tube or the plastic film as the outer layer may be manufactured, and since the outer tube 107 is directly produced outside the knitted tube 106, the length of the manufactured double-layer tube (double-layer wear-resistant tube, double-resistant waterproof tube, etc.) is not limited. When the needle loom includes a coating machine for coating the outer surface of the knitted tube 106 delivered from the needle cylinder 41 with a coating, the coating may be, for example, a wear-resistant or waterproof coating, so that the knitted tube 106 having the wear-resistant coating or the waterproof coating can be directly produced, and the length of the knitted tube 106 having the coating produced is not limited; when the knitted tube 106, the metal braided tube, the plastic film or the coating adopted by the outer tube 107 are all telescopic, the produced double-layer tube with the outer tube 107 outside the knitted tube 106 is also a double-layer telescopic tube. In particular, the outer tube 107 may be an elastic bellows tube or a non-elastic bellows tube.

The common needle machine can not directly produce the three-layer telescopic pipe with the elastic pipe 61 in the knitted pipe 106 and the outer pipe 107 for protecting the knitted pipe 106 outside the knitted pipe 106, when the three-layer telescopic pipe is produced by adopting the prior art, separate equipment is needed to feed the produced double-layer telescopic pipe again, the outer pipe 107 is sleeved outside the double-layer telescopic pipe, and the like, a large amount of manpower and material resources are consumed, and meanwhile, the length of the produced three-layer telescopic pipe is limited by the original double-layer telescopic pipe, the length is not more than 15 meters, and the requirements of users of the three-layer telescopic pipe with larger length can not be met. When the needle machine simultaneously comprises the material conveying unit 60 for conveying the elastic tube 61 into the knitting tube 106 knitted by the crochet hook 42 and the outer tube forming machine 70 for directly producing the telescopic outer tube 107 outside the knitting tube 106, three layers of telescopic tubes with any length can be directly produced, and the telescopic tubes with longer length are formed without being connected through a joint, so that the weight of the three layers of telescopic tubes is reduced, and the production cost is saved; because the outer tube 107 is sleeved on the surface of the knitted tube 106, the knitted tube 106 is not easily scratched, so that the service life of the three-layer telescopic tube is longer than that of the two-layer telescopic tube.

In some embodiments, the outer tube former 70 is a plastic extruder for forming elastic bellows out of the knitted tube 106 output by the needle cylinder 41. The elastic telescopic pipes are uniformly distributed on the surface of the knitted pipe 106, so that redundant wrinkles of the elastic telescopic pipes on the knitted pipe 106 cannot be formed, the using amount of the elastic telescopic pipes is saved, the weight of a product is reduced, and the raw material cost is greatly saved; because the surface of the knitted pipe 106 is sleeved with the elastic telescopic pipe, the surface of the manufactured three-layer telescopic pipe is smooth, the knitted pipe 106 is not easily scratched, and the service life of the three-layer telescopic pipe is longer than that of the double-layer telescopic pipe.

Preferably, as shown in fig. 6, a tube material arranging unit 71 driven by a motor is further provided after the outer tube forming machine 70. So as to orderly contain the produced pipes. Preferably, the tube arranging unit 71 can be driven by the rotating motor 26 to realize automatic production. Specifically, the tube sorting unit 71 is a tube collecting frame, a support frame is arranged on the tube collecting frame, a rotating shaft for winding the tube (a single-layer knitted tube, a double-layer telescopic tube, and a three-layer telescopic tube) is pivotally connected to the support frame, and the rotating shaft is driven by power equipment to rotate around a central shaft of the rotating shaft. The tube finishing unit 71 may also use other prior art devices for finishing tubes.

In other embodiments, when the knitting machine is not provided with the outer tube forming machine 70 or the coating machine, the drawing unit 80 may be provided, and the drawing unit 80 may be used to draw out the knitting yarn 101, the single-layer knitted tube 106, or the double-layer stretchable water tube, which is delivered from the needle cylinder 41. Further, when the needle loom is further provided with an outer tube forming machine 70 or a coating machine, the drawing unit 80 may be provided before or after the outer tube forming machine 70 or the coating machine, for drawing the knitting yarn 101, the single-layer knitted tube 106 or the double-layer telescopic water tube output from the needle cylinder 41 to the outer tube forming machine 70 or the coating machine, or for drawing the double-layer tube or the triple-layer tube output from the outer tube forming machine 70 or the coating machine. Further, when the needle machine is further provided with the tube material tidying unit 71, the pulling unit 80 may be further provided between the outer tube forming machine 70 or the coating machine and the tube material tidying unit 71 for pulling the double-layer tube or the three-layer tube output from the outer tube forming machine 70 or the coating machine onto the tube material tidying unit 71.

In other embodiments, the traction unit 80 can also adopt other traction devices commonly used in the prior art and capable of traction the double-layer telescopic tube or the three-layer telescopic tube, wherein rollers or rotating shafts for traction the double-layer telescopic tube or the three-layer telescopic tube to move out of the needle cylinder are arranged in the traction devices, and the rollers or the rotating shafts rotate around the rotating shafts under the driving of the power device.

Preferably, as shown in fig. 6 and 7, the needle loom further comprises a knitting guide strip or tube 201 provided on the frame 200 and in the first through hole 411, the knitting guide strip or tube 201 and the needle cylinder 41 enclose a channel for the passage of the knitting tube 106, and the feed unit 60 is configured to feed the elastic tube 61 into the knitting guide tube 201; the thread feeding unit is provided with a second through hole 312 for the knitting guide strip or the knitting guide tube 201 to pass through, and the first thread passing hole 311 is arranged at the periphery of the second through hole 312. The knitting tube 106 knitted by the crochet needle 42 can thereby be delivered through the gap between the needle cylinder 41 and the knitting guide tube 201 or the knitting guide bar. Specifically, when the wire feeding unit only includes the first wire passing disc 31, the second through hole 312 is integrally formed or machined on the first wire passing disc 31, and the first wire passing holes 311 are disposed at intervals outside the second through hole 312 along the circumferential direction of the second through hole 312. When the thread feeding unit further comprises a second thread passing disc 32 and/or a third thread passing disc 33, the second thread passing disc 32 and/or the third thread passing disc 33 are/is arranged on one side of the first thread passing disc 31, which is far away from the needle cylinder 41, second through holes 312 are also integrally formed or machined on the second thread passing disc 32 and/or the third thread passing disc 33, and the second thread passing holes 321 are circumferentially arranged at intervals on the outer side of the second through holes 312 on the second thread passing disc 32; the third wire passing holes 331 are circumferentially spaced outside the second through hole 312 of the third wire passing disc 33. Preferably, the second through hole 312 is arranged coaxially with the first through hole to avoid the knitting guide tube 201 or the knitting guide strip from being twisted when being transferred from the second channel to the first channel, which results in the unsmooth transfer of the knitting guide tube 201 or the knitting guide strip, and the knitting guide tube 201 can be replaced by a solid wire, which is used only when producing the single-layer knitting tube 106. During the knitting of the knitted tube 106, the elastic tube 61 is set in the knitted tube 106 by the knitting guide tube 201, reducing the friction between the knitted tube 106 and the elastic tube 61.

Preferably, as shown in fig. 7, in order to prevent the knitted tube 106 knitted by the needle loom from being scratched by the end of the knitting guide tube 201 or the knitting guide strip, a necking portion is integrally formed or machined on the end of the knitting guide tube 201 or the knitting guide strip facing away from the thread feeding unit. Preferably, the constriction is tapered in order to evenly guide out the knitted tube 106 knitted by the needle. Further, the corners of the knitting guide tube 201 or the knitting guide strip are smoothly transited.

Preferably, as shown in fig. 6, the rotating structure 20 and the moving mechanism 43 are connected to the same rotating motor 26 through a transmission mechanism 90, so as to save energy consumption and reduce production cost. In particular, the transmission 90 connects the second synchronous pulley 23 of the rotary structure 20, the slider or slip ring 433 of the moving mechanism 43 and the rotary motor 26. When the needle machine is further provided with the rotation transmission mechanism 25, the transmission mechanism 90 connects the second rotation shaft 255 of the rotation transmission mechanism 25 with the rotation motor 26 (instead of connecting the second timing pulley 23 of the rotation structure 20 with the rotation motor 26). When the needle machine is further provided with the movement driving mechanism 44, the transmission mechanism 90 connects the fourth rotating shaft 444 of the movement driving mechanism 44 with the rotating motor 26 (instead of connecting the slider or slip ring 433 of the moving mechanism 43 with the rotating motor 26).

Specifically, as shown in fig. 6, the rotating shaft of the rotating motor 26 is coaxially connected with a third synchronous pulley 91, a first gear and/or a first sprocket, the total number of the third synchronous pulley 91, the first gear and the first sprocket provided on the rotating shaft of the rotating motor 26 is not less than two, wherein each third synchronous pulley 91 is respectively connected with a fourth synchronous pulley 92 through a belt, each first gear drives a second gear to rotate through a corresponding gear, each first sprocket is respectively connected with a second sprocket through a chain, one of the fourth synchronous pulley 92, the second gear or the second sprocket is coaxially connected with a fourth rotating shaft 444, the fourth rotating shaft 444 is perpendicular to the first through hole 411 of the needle cylinder 41, so that under the driving of the rotating motor 26, the third synchronous pulley 91, the first gear and the first sprocket drive the moving driving mechanism 44 to move through the fourth synchronous pulley 92, the second gear or the second sprocket, so as to drive the crochet hook 42 to reciprocate through the moving mechanism 43; in order to enable the rotating structure 20 to drive the first wire passing disc 31 to rotate around the axis of the first through hole 411 of the needle cylinder 41, the rotating structure 20 and the rotating transmission mechanism 25 are arranged in parallel with the axis of the first through hole 411, and the specific arrangement mode is as follows: a first bevel gear 93 is coaxially connected to the fourth timing pulley 92, the second gear or the second sprocket, a second bevel gear 94 is engaged with the first bevel gear 93, a rotation shaft of the second bevel gear 94 is parallel to an axis of the first through hole 411 of the needle cylinder 41, the second bevel gear 94 is coaxially connected to a second rotation shaft 255, and the rotation structure 20 or the rotation transmission mechanism 25 and the first thread passing disc 31 are driven to reciprocate by the fourth timing pulley 92, the second gear or the second sprocket. The rotating structure 20 and the moving mechanism 43 are connected to different fourth synchronous pulleys 92, second gears or second sprockets.

When the needle machine further comprises the traction unit 80, in order to save energy consumption, the traction unit 80 is also connected with the rotating structure 20, the moving mechanism 43 and the rotating motor 26 through the transmission mechanism, at this time, the rotating shaft of the rotating motor 26 is also coaxially connected with a third synchronous pulley 91, a first gear and/or a first chain wheel, that is, the total number of the third synchronous pulley 91, the first gear and the first chain wheel arranged on the rotating shaft of the rotating motor 26 is not less than three. Specifically, the transmission mechanism 90 connects the drive roller 81 of the traction unit 80 with the rotating motor 26. In order to facilitate the traction unit 80 to drag the knitted tube 106 knitted by the knitting unit 40, the axis of the driving roller 81 of the traction unit 80 is arranged perpendicular to both the axis of the first through hole 411 of the needle cylinder 41 and the rotation axis of the fourth rotation axis 444, and the fourth rotation axis 444 is also perpendicular to the first through hole 411 of the needle cylinder 41, in a way that: a third bevel gear 95 is coaxially connected to the fourth timing pulley 92, the second gear or the second sprocket, a fourth bevel gear 96 is engaged with the third bevel gear 95, a rotation shaft of the fourth bevel gear 96 is simultaneously perpendicular to an axis of the first through hole 411 of the needle cylinder 41 and a rotation shaft of the fourth rotation shaft 444, the fourth bevel gear 96 is coaxially connected to a fifth timing pulley 97, a third gear or a third sprocket, a sixth timing pulley 98, a fourth gear or a fourth sprocket is coaxially connected to the drive roller 81 of the traction unit 80, and the fifth timing pulley 97, the third gear or the third sprocket drives the sixth timing pulley 98, the fourth gear or the fourth sprocket and the drive roller 81 to rotate together. The fourth timing pulley 92, the second gear or the second sprocket connected to the rotating mechanism 20, the moving mechanism 43 and the traction unit 80 are different from each other.

Preferably, in order to ensure that the third timing pulley 91, the first gear and the first sprocket can smoothly drive the rotating structure 20, the moving mechanism 43 and the traction unit 80, as further shown in fig. 6, the rotating shaft of the rotating motor 26, the second rotating shaft 255 and the third rotating shaft 256 are pivotably connected to the frame 200, and at the same time, the rotating shaft of the fourth timing pulley 92, the second gear or the second sprocket and the rotating shafts of the second bevel gear 94 and the fourth bevel gear 96 are also pivotably connected to the frame 200.

When the needle machine is further provided with a tube sorting unit 71, the transmission mechanism 90 connects the tube sorting unit 71 with the rotating motor 26.

Preferably, when 1-10 knitting units 40 are spaced on the frame 200 (6 knitting units, or 3 knitting units, or 8 knitting units, or 10 knitting units 40, or more knitting units 40 are provided in this embodiment), all knitting units 40 are driven by the transmission mechanism 90 driven by the rotary motor 26. Since all the knitting units 40, the rotary structure 20, the moving mechanism 43 and the drawing unit 80 in the needle machine are driven by the same rotary motor 26, energy consumption can be saved, and production cost can be further reduced. Preferably, the rotary motor 26 is a servo motor commonly used in the art. Specifically, the transmission mechanism 90 connecting all the knitting units 40 is a linkage mechanism, and when the gears on the transmission shafts of the related mechanisms of one of the knitting units 40 are driven to rotate by a servo motor, the linkage mechanism is in mesh transmission with the gears or synchronizing wheels on the transmission shafts of all other knitting units 40 and the gears or synchronizing wheels on the auxiliary shafts through the gear transmission mechanism 90 or through a synchronous belt, so that synchronous transmission is realized, and the synchronous transmission can also be realized through chain wheel transmission or belt wheel transmission.

In other embodiments, when the rotating mechanism 20, the moving mechanism 43 and the traction unit 80 are respectively driven by respective servo motors, it is necessary to control the rotation speed and the rotation direction of each servo motor through the control module. When one of the servo motors drives the moving mechanism 43 to drive the crochet hook 42 to move up and down, the other servo motor drives the rotating mechanism 20 to drive the first wire passing disc 31 to rotate back and forth.

The following is a production method of producing a pipe material by using the above-described needle punching machine according to an embodiment of the present invention.

The production method comprises the following production methods:

production method one, a production method of the single-layer knitted tube 106, includes the following steps:

s101: the thread feeding unit feeds the knitting thread 101 to the hook needle 42. Specifically, the yarn feeding unit feeds the knitting yarn 101 to the crochet hook 42 through the first yarn passing hole 311.

Specifically, the thread coils for knitting are respectively hung on the paying-off shaft 104 of the thread feeding unit, and the thread outlet ends on the thread coils respectively and sequentially pass through the first thread passing hole 311 on the first thread passing disc 31, the crochet hook 42 and the first through hole 411 of the needle cylinder 41 to the tube material arranging unit 71 or the traction unit 80 according to the number of threads used by each knitting unit 40.

Further, the method also comprises the step S102: while the moving mechanism 43 drives the hook needle 42 to reciprocate in the axial direction of the first through hole 411, the rotating structure 20 drives the first thread passing dial 31 to rotate to feed the knitting thread 101 on the side of the hook needle 42 onto the hook needle 42.

Preferably, the moving mechanism 43 drives the crochet needle 42 to reciprocate along the axial direction of the first through hole 411, and the rotating structure 20 drives the first reel 31 to rotate forward and backward alternately, so as to deliver the knitting thread 101 on both sides of the crochet needle 42 onto the crochet needle 42 alternately.

The more specific method is the same as the operation method of the needle machine, and is not described herein again. Due to the alternate forward and reverse rotation of the first thread guiding disc 31, the knitting thread 101 knitted by each crochet needle 42 is hooked on the knitting thread 101 on one side and then hooked on the knitting thread 101 on the other side, so as to knit the single-layer knitted tube 106 with a certain tightness as shown in fig. 13.

The production method of the double-layer telescopic pipe further comprises the following steps on the basis of the production method I:

s201, the crochet needle 42 knits a knitted pipe 106 on the periphery of the elastic pipe 61 output by the material conveying unit 60 to form a double-layer wear-resistant water pipe.

Further, the method further comprises step S202: the knitted tube 106 with the elastic tube 61 sleeved inside is pulled out together by the pulling unit 80 or the tube material arranging unit 71 to form the double-layer wear-resistant water tube as shown in fig. 14.

Preferably, step S201 is provided before S101 or S102.

Preferably, the degree of tightness of the elastic tube 61 or the speed of the elastic tube 61 is controlled, and the degree of the elastic tube 61 sleeved with the knitted tube 106 or the length of the elastic tube is adjusted.

Or further comprising the steps of:

s202': the outer tube 107 outputted from the outer tube forming machine 70 is fitted over the outer surface of the single-layer knitted tube 106 produced by the crochet needle 42 of the knitting unit 40, or the abrasion resistant or waterproof coating outputted from the coating machine is coated on the outer surface of the single-layer knitted tube 106 produced at S102 to form a double-layer abrasion resistant tube or a double-layer abrasion resistant waterproof tube as shown in fig. 15 and 16.

Further, the method further comprises step S203': the knitted tube 106 externally sleeved with the outer tube 107 or the knitted tube 106 externally coated with the wear-resistant or waterproof coating is pulled out together by the pulling unit 80 or the tube material arranging unit 71 to form a double-layer wear-resistant tube or a double-layer wear-resistant waterproof tube.

Production method three, the production method of three-layer telescopic pipe, on the basis of production method one, also include step S201, and include the following steps:

s301: the outer pipe 107 output by the outer pipe forming machine 70 is sleeved on the outer surface of the double-layer wear-resistant water pipe produced in S201, or the wear-resistant or waterproof coating output by the coating machine is coated on the outer surface of the double-layer wear-resistant water pipe produced in S202, so as to form the three-layer telescopic pipe shown in fig. 17 and 18.

Further, the method further includes step S302: the knitted tube 106 externally sleeved with the outer tube 107 or the knitted tube 106 externally coated with the wear-resistant or waterproof coating and internally sleeved with the elastic tube 61 is pulled out together by the pulling unit 80 or the tube material arranging unit 71 to form a three-layer telescopic tube.

The product produced by the production method comprises a single-layer knitted pipe 106, a double-layer telescopic water pipe, a double-layer wear-resistant waterproof pipe or a three-layer telescopic pipe, wherein the single-layer knitted pipe 106 only comprises the knitted pipe 106; the double-layer telescopic pipe comprises a double-layer telescopic water pipe, a double-layer wear-resistant pipe and a double-layer wear-resistant waterproof pipe, wherein the double-layer telescopic water pipe comprises a knitted pipe 106 and an elastic pipe 61 arranged in the knitted pipe 106; the double-layer wear-resistant pipe comprises a knitted pipe 106 and an outer pipe 107 sleeved outside the knitted pipe 106; the double-layer wear-resistant waterproof pipe comprises a knitted pipe 106 and a wear-resistant coating or a waterproof coating coated outside the knitted pipe 106; the three-layer telescopic tube comprises a knitted tube 106, an elastic tube 61 sleeved in the knitted tube 106, and an outer tube 107 sleeved outside the knitted tube 106 or a coating coated outside the knitted tube 106. At least one of the single-layer knitted tube 106, the double-layer telescopic tube and the three-layer telescopic tube can be produced on the same needle punching machine simultaneously according to requirements, so that the diversity of the needle punching machine for producing the knitted tube 106 is realized. The single-layer knitted tube 106, the double-layer telescopic tube and the three-layer telescopic tube produced by the production method of the present invention have the advantages of the knitted tube 106 described above, and are not described in detail herein.

The elastic tube 61 and the elastic extension tube are all one of a latex tube, a silicone tube, a TPE tube and a TPV tube.

The knitting yarn 101 is an industrial polyester filament yarn or a nylon filament yarn or other chemical fiber filament yarns with high elasticity and toughness.

The above-mentioned fixing arrangement may be implemented by non-detachable connection (for example, welding or gluing) commonly used in the prior art, or may be implemented by detachable connection (for example, fastening or screwing), and the specific implementation manner of the fixing arrangement is not limited in the present invention.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: technical solutions or technical features described in the foregoing embodiments can be simply replaced or modified by similar technologies, and the simple replacement or modification does not make the essence of the corresponding technical solution depart from the spirit and the essence of the technical solutions of the embodiments of the present invention, and still fall into the protection scope of the present invention.