阅读说明：本技术 一种电脑横编机用牵拉耙 (Traction rake for computer flat knitting machine ) 是由 高铭伟 于 2021-08-10 设计创作，主要内容包括：一种电脑横编机用牵拉耙,包括牵拉钩、牵拉座、牵拉杆、耙架、罩壳、支撑座、弧形片和传动轴,支撑座装在罩壳内,传动轴装在支撑座上,若干弧形片间隔装在传动轴上,相邻两弧形片交错设置成“S”形状；耙架装在罩壳上,耙架上沿自身长度方向有若干竖向滑槽；若干牵拉杆装在对应竖向滑槽内,每根牵拉杆顶部均有牵拉座,牵拉座上装有牵拉钩；每根牵拉杆底部均有弧形片,当传动轴带动弧形片旋转时,各牵拉杆在弧形片的推动作用下能够独立上下往复运动；耙架上安装有若干停止装置,用于根据需求停止相应牵拉杆的动作。本发明能够将局部牵拉宽度缩小到0.5英寸,从而使得横编机不仅可以编织出复杂结构编织物,而且可以大大提高编织物的成品率。(A traction harrow for a computer flat knitting machine comprises a traction hook, a traction seat, a traction rod, a harrow frame, a housing, a supporting seat, arc-shaped pieces and a transmission shaft, wherein the supporting seat is arranged in the housing; the harrow rack is arranged on the housing, and a plurality of vertical sliding grooves are formed in the harrow rack along the length direction of the harrow rack; a plurality of traction rods are arranged in the corresponding vertical sliding grooves, the top of each traction rod is provided with a traction seat, and a traction hook is arranged on each traction seat; the bottom of each traction rod is provided with an arc piece, and when the transmission shaft drives the arc pieces to rotate, each traction rod can independently reciprocate up and down under the pushing action of the arc pieces; and the harrow frame is provided with a plurality of stopping devices for stopping the action of the corresponding traction rod according to requirements. The invention can reduce the local drawing width to 0.5 inch, thereby leading the flat knitting machine not only to knit the knitting fabric with complex structure, but also to greatly improve the finished product rate of the knitting fabric.)

1. The utility model provides a computer is tractive harrow for flat knitting machine, includes tractive hook (11), tractive seat (10), tractive pole (7) and harrow frame (6), its characterized in that: the device is characterized by further comprising a housing (1), a supporting seat (2), arc-shaped pieces (3) and a transmission shaft (5), wherein the supporting seat (2) is arranged in the housing (1), the transmission shaft (5) is transversely arranged on the supporting seat (2), one end of the transmission shaft is connected with a driving device, a plurality of arc-shaped pieces (3) are arranged on the transmission shaft (5) at intervals, and two adjacent arc-shaped pieces (3) are arranged in a staggered mode to form an S shape;

the harrow frame (6) is vertically arranged on the housing (1), and a plurality of vertical sliding grooves (61) are formed in the harrow frame (6) along the length direction of the harrow frame;

the traction rods (7) are respectively arranged in the corresponding vertical sliding grooves (61), the top of each traction rod (7) is provided with a traction seat (10), and the traction seats (10) are provided with traction hooks (11);

the bottom of each traction rod (7) is provided with an arc-shaped sheet (3), and when the transmission shaft (5) drives the arc-shaped sheets (3) to rotate, each traction rod (7) can independently reciprocate up and down under the pushing action of the arc-shaped sheets (3);

and the rake frame (6) is provided with a plurality of stopping devices (8) for stopping the action of the corresponding traction rods (7) according to requirements.

2. The drawing harrow of claim 1, wherein the drawing harrow comprises: the stopping devices (8) are electromagnets, and each traction rod (7) is provided with an iron sheet seat (13) for attracting the electromagnets.

3. The drawing harrow of claim 1, wherein the drawing harrow comprises: the stop devices (8) are electromagnetic valves, and the side wall of each traction rod (7) is provided with a notch (74) for inserting a valve rod of the electromagnetic valve.

4. The drawing harrow of any one of claims 1 to 3, wherein the drawing harrow comprises: the bottom of the traction rod (7) is provided with an elastic reset device (4).

5. The drawing harrow of claim 4, wherein the drawing harrow comprises: elasticity resetting means (4) are including extension spring (41), extension spring seat (42) and tension adjusting screw (43), extension spring seat (42) are located harrow frame (6) lower part inner chamber, tension adjusting screw (43) are vertical to be installed in harrow frame (6) bottom, and insert and establish in the threaded hole of seting up on extension spring seat (42), the quantity of extension spring (41) and the quantity one-to-one of traction rod (7), and the one end dress of each extension spring (41) is on corresponding traction rod (7), and the other end dress is on extension spring seat (42).

6. The drawing harrow of claim 5, wherein the drawing harrow comprises: every the bottom of tractive pole (7) all is equipped with protruding section (71), be equipped with gyro wheel (72) on protruding section (71), the arch outer wall laminating of gyro wheel (72) and arc piece (3) is mutually.

7. The drawing harrow of claim 4, wherein the drawing harrow comprises: the traction hook (11) is composed of a hook part (111) and a counterweight part (112) which are integrated, the part of the hook part (111) contacted with the counterweight part (112) is connected with the traction seat (10) through a pin shaft and a pin hole (113), when the traction rod (7) drives the traction seat (10) to move upwards, the hook part (111) of the traction hook (11) automatically retracts into the traction seat (10) under the blocking effect of the woven fabric, and when the traction rod (7) drives the traction seat (10) to move downwards, the hook part (111) automatically extends out of the traction seat (10) under the effect of the counterweight part (112).

8. The drawing harrow of claim 7, wherein the drawing harrow comprises: the front part of the hook part (111) is provided with a limiting step (115).

9. The drawing harrow of claim 8, wherein the drawing harrow comprises: the counterweight part (112) is provided with a waist-shaped hole (114) near the pin hole (113), a limiting pin is arranged in the waist-shaped hole (114), and the limiting pin is arranged on the traction seat (10).

10. The drawing harrow of claim 9, wherein the drawing harrow comprises: a protective cover (9) is arranged at the upper part of the harrow rack (6), a vertical long groove (91) for the traction hook (11) to move up and down is arranged on the protective cover (9) corresponding to the traction hook (11), a guide groove (73) is arranged on the traction rod (7) along the length direction of the traction rod, a cylindrical pin is arranged in the guide groove (73), the cylindrical pin is arranged on the harrow frame (6), the guide groove (73) consists of an upper vertical groove section (731) and a bottom oblique groove section (732), when the traction rod (7) drives the traction seat (10) to move upwards, the traction hook (11) automatically retracts into a cavity enclosed between the shield (9) and the harrow frame (6) under the action of the guide groove (73) and the cylindrical pin, when the traction rod (7) drives the traction seat (10) to move downwards, the traction hook (11) can automatically extend out of a cavity enclosed between the shield (9) and the rake rack (6) under the action of the guide groove (73) and the cylindrical pin.

Technical Field

The invention relates to the technical field of computer flat knitting machines, in particular to a traction harrow for a computer flat knitting machine.

Background

As is known in the art, in order to prevent loops from floating up during the knitting of a fabric by a flat knitting machine, a knitted fabric is generally pulled down by a pulling device.

At first, most of the drawing devices provided in the flat knitting machine are roller devices, and in operation, the knitted fabric is nipped between two roller rollers having opposite rotation directions, and the knitted fabric is drawn downward by the rotation force. The roller device pulls the braided fabric simultaneously through integral rotation movement, namely pulls the braided fabric integrally, so that the pulling force of the roller device depends on the rotation speed of the roller and the surface friction force of the roller rubber layer, the accurate control of the pulling force cannot be realized at all in normal operation, and the selective local pulling of the braided fabric cannot be realized. Even if the roller device is improved into a sectional type roller device, the drawing effect is not ideal, and waste products are easy to generate. If the knitting is complicated, for example, full-mold knitting, the desired drawing effect cannot be achieved. In addition, the rubber layer in the roller has certain loss, and the braided fabric is deformed when being drawn to a certain degree, so that the rejection rate is increased.

Later, some manufacturers have designed drawing rakes, such as patent number ZL201922199702.8, chinese utility model entitled "a motor-driven fabric drawing device", which, during operation, replace the original roller device by providing several sets of drawing rakes arranged side by side below the knitting machine needle plate corresponding to one side or both sides of the warp path of the fabric, and during operation, the continuous downward drawing of the fabric is achieved by the alternate up-and-down movement of the drawing hooks in adjacent drawing rakes.

Although the drawing harrow overcomes the defect that the existing roller device can not selectively draw partial knitted fabrics, the width of each drawing harrow is designed to be 1.5 inches (the width of other types of drawing harrow on the market is the width) due to the restriction of some factors (such as the specification of a motor, the power is smaller as the diameter of the motor is thinner), and a plurality of rows of drawing hooks arranged at the upper part of each drawing harrow are uniformly driven upwards by a motor at the bottom when working, in other words, the existing drawing harrow can only reduce the partial drawing width of the knitted fabrics to 1.5 inches, although the drawing width meets the production requirements of most knitted fabrics at present, for the knitted fabrics with complex structures, if the drawing harrow with the drawing width is forcibly used, the part of the knitted fabrics which is not needed can be easily fluffed due to the reciprocating drawing of the drawing hook, even a crack is scraped, and the rate of finished braided fabric is seriously influenced.

Disclosure of Invention

The invention aims to solve the technical problem of providing a drawing rake for a computer flat knitting machine, which can reduce the local drawing width to 0.5 inch, so that the flat knitting machine can not only weave braided fabrics with complex structures, but also greatly improve the finished product rate of the braided fabrics.

The technical scheme of the invention is that the drawing harrow for the computer flat knitting machine comprises a drawing hook, a drawing seat, a drawing rod, a harrow frame, a housing, a supporting seat, arc-shaped pieces and a transmission shaft, wherein the supporting seat is arranged in the housing, the transmission shaft is transversely arranged on the supporting seat, one end of the transmission shaft is connected with a driving device, a plurality of arc-shaped pieces are arranged on the transmission shaft at intervals, and two adjacent arc-shaped pieces are arranged in a staggered manner to form an S shape; the harrow rack is vertically arranged on the housing, and a plurality of vertical sliding grooves are formed in the harrow rack along the length direction of the harrow rack; the traction rods are respectively arranged in the corresponding vertical sliding grooves, the top of each traction rod is provided with a traction seat, and the traction seat is provided with a traction hook; the bottom of each traction rod is provided with an arc piece, and when the transmission shaft drives the arc pieces to rotate, each traction rod can independently reciprocate up and down under the pushing action of the arc pieces; and the rake frame is provided with a plurality of stopping devices for stopping the action of the corresponding traction rod according to the requirement.

The invention relates to a traction harrow for a computer flat knitting machine, wherein a stopping device is an electromagnet, and each traction rod is provided with an iron sheet seat for attracting the electromagnet.

The invention relates to a traction harrow for a computer flat knitting machine, wherein a stopping device is an electromagnetic valve, and the side wall of each traction rod is provided with a notch for inserting a valve rod of the electromagnetic valve.

The invention relates to a traction harrow for a computer flat knitting machine, wherein an elastic reset device is arranged at the bottom of a traction rod.

The invention relates to a traction harrow for a computer flat knitting machine, wherein an elastic reset device comprises tension springs, a tension spring seat and tension adjusting screw rods, the tension spring seat is positioned in an inner cavity at the lower part of a harrow frame, the tension adjusting screw rods are vertically arranged at the bottom of the harrow frame and are inserted into threaded holes formed in the tension spring seat, the number of the tension springs is in one-to-one correspondence with the number of the traction rods, one end of each tension spring is arranged on the corresponding traction rod, and the other end of each tension spring is arranged on the tension spring seat.

The invention relates to a traction harrow for a computer flat knitting machine, wherein a convex section is arranged at the bottom of each traction rod, a roller is arranged on each convex section, and the roller is attached to the arched outer wall of an arc-shaped sheet.

The invention relates to a traction rake for a computer flat knitting machine, wherein the traction hook consists of a hook part and a counterweight part which are integrated, the contact part of the hook part and the counterweight part is connected with a traction seat through a pin shaft and a pin hole, when the traction seat is driven by the traction rod to move upwards, the hook part of the traction hook automatically retracts into the traction seat under the blocking action of a knitted fabric, and when the traction seat is driven by the traction rod to move downwards, the hook part automatically extends out of the traction seat under the action of the counterweight part.

The invention relates to a drawing harrow for a computer flat knitting machine, wherein the front part of a hooking part is provided with a limiting step.

The invention relates to a drawing harrow for a computer transverse knitting machine, wherein a waist-shaped hole is formed in the position, close to a pin hole, of a counterweight part, a limiting pin is arranged in the waist-shaped hole, and the limiting pin is arranged on a drawing seat.

The invention relates to a traction harrow for a computer flat knitting machine, wherein a protective cover is arranged at the upper part of a harrow frame, a vertical long groove for a traction hook to move up and down is arranged on the protective cover corresponding to the traction hook, a guide groove is arranged on the traction rod along the length direction of the traction rod, a cylindrical pin is arranged in the guide groove and is arranged on the harrow frame, the guide groove consists of a vertical groove section at the upper part and a chute section at the bottom, when the traction rod drives a traction seat to move upwards, the traction hook automatically retracts into a cavity enclosed between the protective cover and the harrow frame under the action of the guide groove and the cylindrical pin, and when the traction rod drives the traction seat to move downwards, the traction hook automatically extends out of the cavity enclosed between the protective cover and the harrow frame under the action of the guide groove and the cylindrical pin.

After adopting the structure, compared with the prior art, the traction harrow for the computer transverse braiding machine has the following advantages: the invention designs the traction harrow into a structure consisting of a traction hook, traction seats, traction rods, a harrow frame, a cover shell, a supporting seat, arc-shaped pieces and a transmission shaft, wherein the supporting seat is arranged in the cover shell, the transmission shaft is transversely arranged on the supporting seat, one end of the transmission shaft is connected with a driving device, the arc-shaped pieces are arranged on the transmission shaft at intervals, two adjacent arc-shaped pieces are arranged in a staggered mode to form an S shape, the harrow frame is vertically arranged on the cover shell, a plurality of vertical sliding grooves are arranged on the harrow frame along the length direction of the harrow frame, the traction rods are provided with a plurality of groups and are respectively arranged in the corresponding vertical sliding grooves, the top of each traction rod is provided with one traction seat, the traction seat is provided with the traction hook, the bottom of each traction rod is provided with one arc-shaped piece, when the transmission shaft drives the arc-shaped pieces to rotate, each traction rod can independently reciprocate up and down under the pushing action of the arc-shaped pieces, and the harrow frame is provided with a plurality of stopping devices, the device is used for stopping the action of the corresponding traction rod according to the requirement, so that the device realizes the independent control of a certain traction rod through a reasonable structural design, and because each traction rod only occupies the width of 0.5 inch, the device reduces the local traction width of the braided fabric to 0.5 inch, so that when the braided fabric with a complex structure is braided, if a certain part does not need to be pulled, the corresponding traction rod can be independently stopped, the phenomenon that the traction rod drives the traction rod to carry out reciprocating traction on the part which does not need to be pulled, the generation of fluffing and cracking of the braided fabric is avoided, and the yield of the flat knitting machine when the braided fabric with the complex structure is braided is greatly improved.

Drawings

FIG. 1 is a schematic left-view perspective view of a drawing harrow for a computerized flat knitting machine according to the present invention;

FIG. 2 is a schematic view of the cover of FIG. 1 partially exploded;

FIG. 3 is a schematic view of the cover of FIG. 1 in a perspective view from the right;

FIG. 4 is an enlarged perspective view of the retractor, the retractor base and the retractor rod of FIG. 2 shown assembled together;

FIG. 5 is a perspective view of the arcuate plate of FIG. 3 assembled with a drive shaft;

FIG. 6 is an enlarged perspective view of the retractor of FIG. 4;

FIG. 7 is a schematic perspective view of a second embodiment of the present invention;

fig. 8 is a schematic perspective view showing an enlarged structure of the traction hook, the traction base and the traction rod when they are assembled together according to the third embodiment of the present invention.

Detailed Description

The drawing harrow for the computer flat knitting machine is further explained in detail by combining the attached drawings and the detailed embodiment:

example one

As shown in fig. 1, fig. 2 and fig. 3, in the present embodiment, the drawing rake for a computer flat knitting machine according to the present invention comprises a drawing hook 11, a drawing seat 10, a drawing rod 7, a rake frame 6, a housing 1, a support seat 2, an arc-shaped piece 3 and a transmission shaft 5. The supporting seat 2 is arranged in the inner cavity of the housing 1; the transmission shaft 5 is transversely arranged on the supporting seat 2 through a bearing; one end of the transmission shaft 5 is connected with a driving device, and the transmission shaft 5 can rotate around the axis of the transmission shaft under the driving of the driving device; referring to fig. 5, there are four arc-shaped pieces 3, and the arc-shaped pieces are installed on the transmission shaft 5 at intervals, and two adjacent arc-shaped pieces 3 are arranged in a staggered manner to form an S shape.

The harrow frame 6 is vertically installed on the housing 1, and four vertical sliding grooves 61 are arranged on the harrow frame 6 along the length direction of the harrow frame. The number of the traction rods 7 is four, and the traction rods are respectively arranged in the corresponding vertical sliding grooves 61.

The top of each traction rod 7 is provided with a traction seat 10, and a traction hook 11 is arranged on each traction seat 10; the two sides of each pulling seat 10 are provided with cover plates 101 for protecting the pulling hook 11.

Referring to fig. 6, the pulling hook 11 is composed of a hooking portion 111 and a weight portion 112 which are integrated, and a portion of the hooking portion 111 contacting the weight portion 112 is connected to the pulling seat 10 through a pin and a pin hole 113. When the traction rod 7 drives the traction seat 10 to move upwards, the hooking part 111 of the traction hook 11 automatically retracts into the traction seat 10 under the blocking action of the knitted fabric; when the pulling rod 7 drives the pulling seat 10 to move downwards, the hooking part 111 automatically extends out of the pulling seat 10 under the action of the counterweight part 112, and the braided fabric starts to be pulled downwards.

The front part of the hooking part 111 is provided with a limit step 115, and the limit step 115 plays a role of limiting to prevent the woven fabric from being damaged due to a large hole being pricked on the woven fabric when the pulling hook 11 pulls the woven fabric downwards. A waist-shaped hole 114 is arranged on the counterweight part 112 near the pin hole 113, a limit pin is arranged in the waist-shaped hole 114, and the limit pin is arranged on the traction seat 10. The arrangement of the waist-shaped hole 114 and the limit pin can limit the stroke range of the traction hook 11, so that the traction hook 11 can be ensured to extend out and retract in time during working, and the purpose of improving the working efficiency of traction braided fabric is further achieved.

The bottom of the traction rod 7 is provided with an elastic reset device 4, and the elastic reset device 4 comprises a tension spring 41, a tension spring seat 42 and a tension adjusting screw 43. The tension spring seat 42 is positioned in an inner cavity at the lower part of the harrow frame 6, the tension adjusting screw 43 is vertically inserted into a mounting hole 62 formed at the bottom of the harrow frame 6, the upper part of the adjusting screw 43 is positioned in a threaded hole formed on the tension spring seat 42, and the number of the tension springs 41 is one-to-one corresponding to that of the tension springs 7 and is also four. One end of each tension spring 41 is hooked on the corresponding traction rod 7, and the other end is hooked on the tension spring seat 42. During actual use, the adjusting screw 43 is screwed, so that the tension of the tension spring 41 can be adjusted, and the reset force of the traction rod 7 is further changed.

The bottom of each traction rod 7 is provided with an arc-shaped piece 3, and when the transmission shaft 5 drives the arc-shaped pieces 3 to rotate, each traction rod 7 can independently reciprocate up and down under the pushing action of the arc-shaped pieces 3.

The bottom of each traction rod 7 is provided with a convex section 71, the convex section 71 is provided with a roller 72, and the roller 72 is attached to the arched outer wall of the arc-shaped sheet 3. When the arc-shaped piece 3 pushes the traction rod 7 to move upwards, the roller 72 is directly attached to the arched outer wall of the arc-shaped piece 3, so that the friction force between the arc-shaped piece 3 and the bottom of the traction rod 7 can be effectively reduced.

The rake frame 6 is provided with a plurality of stopping devices 8, the number of the stopping devices 8 corresponds to the number of the pulling rods 7 one by one, and the number of the stopping devices 8 is four, and the stopping devices are used for independently stopping the vertical pulling action of the corresponding pulling rods 7 according to requirements. The stopping device 8 is specifically an electromagnet, and each traction rod 7 is provided with an iron sheet seat 13 for attracting the electromagnet. When the braided fabric with the complex structure is braided, if a certain part does not need to be drawn, the electromagnet at the part can be electrified, so that the electromagnet is attracted with the iron sheet seat 13 which correspondingly moves upwards along with the pulling rod 7, the attraction force is greater than the downward reset pulling force of the pulling spring 41 on the pulling rod 7, and the pulling rod 7 at the part is independently stopped.

The upper part of the harrow frame 6 is provided with a shield 9; the part of the protective cover 9 corresponding to the traction hook 11 is provided with a vertical long groove 91 for the traction hook 11 to move up and down. The side cover 12 is arranged at the lower part of the harrow frame 6 and plays a certain role in protecting the elastic resetting device 4.

Referring to fig. 4, the traction rod 7 is provided with a guide groove 73 along its length direction; a cylindrical pin is arranged in the guide groove 73 and is arranged on the rake frame 6; the guide groove 73 is composed of an upper vertical groove section 731 and a bottom oblique groove section 732, when the traction rod 7 drives the traction seat 10 to move upwards, the traction hook 11 is automatically retracted into a cavity defined between the shield 9 and the rake frame 6 under the action of the oblique groove section 732 and the cylindrical pin, and when the traction rod 7 drives the traction seat 10 to move downwards, the traction hook 11 automatically extends out of the cavity defined between the shield 9 and the rake frame 6 under the action of the vertical groove section 731 and the cylindrical pin to start to draw the braided fabric.

When the pulling harrow is used, a plurality of pulling harrows of the invention can be arranged below the needle plate in parallel corresponding to one side or two sides of the warp path of the braided fabric, and the braided fabric can be continuously pulled downwards by the alternate up-and-down motion of the pulling hooks 11 in the pulling rods 7. According to the invention, the independent control of a certain traction rod 7 is realized through a reasonable structural design, and each traction rod 7 only occupies the width of 0.5 inch, so that the local traction width of the braided fabric is reduced to 0.5 inch, and when the braided fabric with a complex structure is braided, if a certain part does not need to be pulled, the corresponding traction rod 7 can be independently stopped, the phenomenon that the traction hook 11 is driven to carry out reciprocating traction on the part which does not need to be pulled, the generation of fluffing and cracking of the braided fabric is avoided, and the yield of the flat knitting machine in braiding the braided fabric with the complex structure is greatly improved.

Example two

Referring to fig. 7, the second embodiment is different from the first embodiment only in that: two stopping devices 8 are arranged, each stopping device 8 can simultaneously stop the up-and-down drawing action of the two traction rods 7, and the two traction rods 7 account for 1 inch according to the width of 0.5 inch occupied by each traction rod, namely the local drawing width of the braided fabric is reduced to 1 inch, so that the braiding requirement of the complex braided fabric can be basically met.

EXAMPLE III

Referring to fig. 8, the difference between the third embodiment and the first embodiment is only that: the stopping device 8 is designed to be an electromagnetic valve, and the side wall of each traction rod 7 is provided with a notch 74 for inserting a valve rod of the electromagnetic valve, so that when the device works, the corresponding traction rod 7 can be stopped independently by controlling the electromagnetic valve, and the device is prevented from driving the traction hook 11 to carry out reciprocating traction on the part of the braided fabric which does not need to be drawn.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention by those skilled in the art should fall within the protection scope of the present invention without departing from the design spirit of the present invention.