阅读说明：本技术 一种动平衡张力牵拉机构及具有其的针织机 (Dynamic balance tension traction mechanism and knitting machine with same ) 是由 朱立成 赵云云 陈悟 董雄伟 崔永明 于 2021-07-20 设计创作，主要内容包括：本发明涉及一种动平衡张力牵拉机构及具有其的针织机,动平衡张力牵拉机构包括回转轴、张力调节机构、多组一一对应的传动片和卷取轮,传动片设为圆片,且中部同轴设有轴孔,多组传动片分别套设于回转轴上,张力调节机构安装于回转轴上,并分别与多组传动片连接,用于调节传动片与回转轴的平衡,多组卷取轮中部同轴设有装配孔,且分别同轴套设于对应的传动片外,卷取轮和对应的传动片之间连接有弹性件,且当二者相对旋转时,弹性件同步压缩,卷取轮外缘沿其周向间隔设有勾拉齿。优点：结构设计简单,部件易更换,可根据线圈纵行长度的不同自动调整牵拉力,使作用在每一线圈纵行的牵拉张力稳定、均匀、一致,具有很好的张力调节作用。(The invention relates to a dynamic balance tension traction mechanism and a knitting machine with the same, wherein the dynamic balance tension traction mechanism comprises a rotating shaft, a tension adjusting mechanism, a plurality of groups of transmission sheets and winding wheels which are in one-to-one correspondence, the transmission sheets are round sheets, the middle parts of the transmission sheets are coaxially provided with shaft holes, the plurality of groups of transmission sheets are respectively sleeved on the rotating shaft, the tension adjusting mechanism is arranged on the rotating shaft and is respectively connected with the plurality of groups of transmission sheets and is used for adjusting the balance between the transmission sheets and the rotating shaft, the middle parts of the plurality of groups of winding wheels are coaxially provided with assembling holes and are respectively coaxially sleeved outside the corresponding transmission sheets, an elastic element is connected between each winding wheel and the corresponding transmission sheet, when the transmission sheets and the winding wheels rotate relatively, the elastic elements are synchronously compressed, and the outer edge of each winding wheel is provided with hook-pull teeth at intervals along the circumferential direction of the winding wheel. The advantages are that: the structure design is simple, the parts are easy to replace, the traction force can be automatically adjusted according to different coil wale lengths, the traction tension acting on each coil wale is stable, uniform and consistent, and the tension adjusting function is good.)

1. A dynamic balance tension traction mechanism is characterized in that: the tension adjusting mechanism is arranged on the rotating shaft (1) and is respectively connected with the plurality of groups of transmission sheets (2) for adjusting the balance between the transmission sheets (2) and the rotating shaft (1) so as to enable the transmission sheets (2) to rotate in a linkage manner or relatively rotate with the rotating shaft (1) under the influence of external force, the plurality of groups of winding wheels (3) are coaxially provided with assembling holes in the middle and are respectively coaxially sleeved outside the corresponding transmission sheets (2), and an elastic element (4) is connected between each winding wheel (3) and the corresponding transmission sheet (2), when the two parts rotate relatively, the elastic part (4) compresses synchronously, and the outer edge of the winding wheel (3) is provided with hook teeth at intervals along the circumferential direction.

2. A dynamically balanced tension pulling mechanism as claimed in claim 1, wherein: the inner diameter of the transmission piece (2) is equal to the outer diameter of the rotating shaft (1), and the inner diameter of the winding wheel (3) is equal to the outer diameter of the transmission piece (2).

3. A dynamically balanced tension pulling mechanism as claimed in claim 2, wherein: the tension adjusting mechanism comprises a pressure adjusting block (5) and a pressure adjusting piece (6), a cavity is arranged inside the rotating shaft (1) along the axial direction of the rotating shaft, a liquid filling opening (11) which is communicated with the cavity and is provided with a plug is arranged at one end of the rotating shaft (1), a strip-shaped gap which is communicated with the cavity is arranged on the surface of the rotating shaft (1) along the axial direction of the rotating shaft, the pressure adjusting block (5) is in strip-shaped sealing assembly in the strip-shaped gap, a transmission sheet (2) is respectively sleeved on a shaft section where the pressure adjusting block (5) is located and is in contact with the pressure adjusting block (5), a pressure adjusting hole which is communicated with the cavity is arranged on the surface of one end of the rotating shaft (1), the pressure adjusting piece (6) is assembled at the pressure adjusting hole and is used for adjusting the internal pressure of the cavity of the rotating shaft (1), and the pressure adjusting block (5) can be used under the internal pressure change of the rotating shaft (1), the radial movement of the rotary shaft (1) is realized, so that the friction force between the pressure adjusting block (5) and the transmission sheet (2) is adjusted, and the balance adjustment of the transmission sheet (2) and the rotary shaft (1) is realized.

4. A dynamically balanced tension pulling mechanism as claimed in claim 3, wherein: the pressure adjusting holes are screw holes which are radially arranged along the rotating shaft (1), and the pressure adjusting pieces (6) are nuts matched with the screw holes.

5. A dynamically balanced tension pulling mechanism as claimed in claim 2, wherein: the outer edge of the transmission piece (2) is provided with an assembly notch (21) along the circumferential direction, the inner edge of the winding wheel (3) is provided with a positioning part (31) extending into the corresponding assembly notch (21) of the transmission piece (2), and the elastic part (4) is arranged in the corresponding assembly notch (21) and connected between the positioning part (31) and one end of the assembly notch (21).

6. A dynamically balanced tension pulling mechanism as claimed in claim 5, wherein: the elastic piece (4) is a pressure spring, and two ends of the elastic piece are respectively connected between the positioning part (31) and one end of the assembly notch (21).

7. A dynamically balanced tension pulling mechanism as claimed in claim 6, wherein: one side integrated into one piece of driving strap (2) is equipped with rather than coaxial spacer (22), the external diameter of spacer (22) is greater than the external diameter of the body of driving strap (2).

8. A dynamically balanced tension pulling mechanism as claimed in any one of claims 5 to 7, wherein: the assembling gap (21) is a fan-shaped annular gap coaxial with the transmission sheet (2), and the positioning part (31) is of a fan-shaped annular structure coaxial with the coiling wheel (3).

9. A dynamically balanced tension pulling mechanism as claimed in any one of claims 1 to 7, wherein: the coiling wheel (3) is a ratchet wheel, the ratchet teeth of the coiling wheel form the hooking teeth, and the tip ends of the ratchet teeth are chamfered with round corners.

10. A knitting machine characterized by: comprising a dynamically balanced tension pulling mechanism as claimed in any one of claims 1 to 9.

Technical Field

The invention relates to the field of textiles, in particular to a dynamic balance tension traction mechanism and a knitting machine with the same.

Background

The common drawing and winding mechanism for weft knitting machine is to fix one end of fabric onto drawing roller, and to apply certain drawing tension to the fabric via the holding of the drawing roller and the rotation of the roller before winding into package of certain form and capacity. In this process, all the wales are subjected to the same drawing tension as the drawing roller rotates, which causes the loops of different lengths to be subjected to a greater or lesser drawing force than the desired tension thereof, thereby forming loops of larger or smaller size.

According to different driving modes of the drawing roller, the drawing and winding mechanism of the circular knitting machine has three modes of mechanical continuous drawing, mechanical intermittent drawing and continuous drawing of driving the drawing roller by a direct-current torque motor.

The mechanical continuous drawing is that the power of the main shaft is transmitted to the drawing roller through a series of transmission parts, the needle cylinder rotates for one circle, and the drawing roller always rotates for a certain angle no matter what the length of the fabric to be woven is, so as to draw a certain amount of fabric.

The mechanical intermittent drawing is that the power of the main shaft is transmitted to a spring through a series of transmission mechanisms, and the drawing roller can rotate to draw the fabric only when the rotation moment generated by the elastic restoring force of the spring on the drawing roller is larger than the tension moment generated by the fabric on the drawing roller, such as a gear type drawing and coiling mechanism.

The continuous drawing of the DC torque motor driving the drawing roller adopts a method of adjusting the drawing tension by taking a torque motor as power, and a potentiometer is used on the machine to adjust the armature current, so that the drawing tension can be set and changed at any time, and a dial of the potentiometer displays the drawing tension value.

In summary, the pulling and winding mechanisms pull and wind the knitted fabric into a package by using different principles, but no matter how high each stitch is, each row of stitches are subjected to equal pulling tension in the pulling process, and the pulling roller cannot finely treat each stitch, so that the formed fabric cannot achieve the expected effect, and the knitted fabric presents the phenomenon of bow-shaped bending deformation of the courses. Therefore, the control of the drawing tension of each coil is very important in the drawing and winding process.

Disclosure of Invention

The invention aims to provide a dynamic balance tension traction mechanism and a knitting machine with the same, and effectively overcomes the defects of the prior art.

The technical scheme for solving the technical problems is as follows:

a dynamic balance tension drawing mechanism comprises a rotating shaft, a tension adjusting mechanism, a plurality of groups of driving sheets and winding wheels which are in one-to-one correspondence, wherein the driving sheets are round sheets, and the middle part is coaxially provided with a shaft hole, a plurality of groups of the transmission sheets are respectively sleeved on the rotating shaft, the tension adjusting mechanism is arranged on the rotating shaft, and are respectively connected with several groups of above-mentioned driving strips for regulating balance of the above-mentioned driving strips and rotating shaft, so that the transmission sheet and the rotary shaft can rotate in a linkage manner or relatively rotate under the influence of external force, the middle parts of a plurality of groups of winding wheels are coaxially provided with assembly holes, and are respectively coaxially sleeved outside the corresponding transmission sheets, an elastic element is connected between the coiling wheel and the corresponding transmission sheets, when the two parts rotate relatively, the elastic parts compress synchronously, and the outer edge of the winding wheel is provided with hook teeth at intervals along the circumferential direction.

On the basis of the technical scheme, the invention can be further improved as follows.

Further, the inner diameter of the driving strap is equal to the outer diameter of the rotation shaft, and the inner diameter of the winding wheel is equal to the outer diameter of the driving strap.

Further, the tension adjusting mechanism includes a pressure adjusting block and a pressure adjusting member, a cavity is formed in the rotating shaft along an axial direction thereof, a liquid filling port with a stopper is formed at one end of the rotating shaft, the liquid filling port is communicated with the cavity, a strip-shaped slit is formed in a surface of the rotating shaft along the axial direction thereof, the pressure adjusting block is hermetically fitted in the strip-shaped slit, the driving pieces are respectively fitted over a shaft section where the pressure adjusting block is located and are in contact with the pressure adjusting block, a pressure adjusting hole is formed in a surface of one end of the rotating shaft, the pressure adjusting member is fitted in the pressure adjusting hole, and is used for adjusting the pressure inside the cavity of the rotating shaft, the pressure adjusting block is movable in a radial direction with respect to the rotating shaft under a change in the pressure inside the rotating shaft, thereby adjusting a frictional force between the pressure adjusting block and the driving pieces, the balance adjustment of the transmission piece and the rotating shaft is realized.

Further, the pressure adjusting hole is a screw hole provided along the radial direction of the rotating shaft, and the pressure adjusting member is a nut fitted to the screw hole.

Furthermore, the outer edge of the driving sheet is provided with an assembly notch along the circumferential direction, the inner edge of the winding wheel is provided with a positioning part extending into the corresponding assembly notch of the driving sheet, and the elastic part is arranged in the corresponding assembly notch and connected between the positioning part and one end of the assembly notch.

Further, the elastic member is a compression spring, and two ends of the elastic member are respectively connected between the positioning portion and one end of the assembling notch.

Further, a spacer is integrally formed on one surface of the driving strap, and the spacer is coaxial with the driving strap, and the outer diameter of the spacer is larger than that of the body of the driving strap.

Further, the assembly notch is a sector annular notch coaxial with the transmission piece, and the positioning portion is a sector annular structure coaxial with the winding wheel.

Furthermore, the winding wheel is a ratchet wheel, the ratchet teeth of the winding wheel form the hooking teeth, and the tip ends of the ratchet teeth are chamfered to form round corners.

The beneficial effects are that: the structure design is simple, the parts are easy to replace, the traction force can be automatically adjusted according to different coil wale lengths, the traction tension acting on each coil wale is stable, uniform and consistent, and the tension adjusting function is good.

A knitting machine is also provided that includes a dynamically balanced tension puller mechanism.

Drawings

FIG. 1 is a schematic structural view of a dynamically balanced tension pulling mechanism of the present invention;

FIG. 2 is a cross-sectional view of the rotating shaft of the dynamically balanced tension pulling mechanism of the present invention;

FIG. 3 is a schematic structural diagram of a driving strap of the dynamic balance tension pulling mechanism of the present invention;

fig. 4 is a schematic structural view of a take-up pulley in the dynamic balance tension pulling mechanism of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a rotating shaft; 2. a driving strap; 3. a take-up reel; 4. an elastic member; 5. a pressure regulating block; 6. a pressure regulating member; 11. a liquid filling port; 21. assembling the notch; 22. a separator; 31. a positioning part.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

Example 1

As shown in fig. 1, the dynamic balance tension pulling mechanism of the present embodiment includes a rotating shaft 1, a tension adjusting mechanism, a plurality of sets of driving strips 2 and winding wheels 3 corresponding to each other, wherein the driving strips 2 are circular sheets, and have a shaft hole coaxially formed at the middle thereof, the plurality of sets of driving strips 2 are respectively sleeved on the rotating shaft 1, the tension adjusting mechanism is mounted on the rotating shaft 1 and is respectively connected to the plurality of sets of driving strips 2 for adjusting the balance between the driving strips 2 and the rotating shaft 1, so that the driving strips 2 are rotated in a linked manner or relatively rotated with respect to the rotating shaft 1 under the influence of an external force, a plurality of sets of winding wheels 3 have assembling holes coaxially formed at the middle thereof and are respectively coaxially sleeved outside the corresponding driving strips 2, an elastic member 4 is connected between the winding wheels 3 and the corresponding driving strips 2, and the elastic members 4 are synchronously compressed when the winding wheels and the driving strips 2 are relatively rotated, the outer edge of the coiling wheel 3 is provided with hook teeth at intervals along the circumferential direction.

The operation method of the dynamic balance tension pulling roll is as follows:

the linkage force between the transmission sheet 2 and the rotating shaft 1 is adjusted by operating the tension adjusting mechanism (namely, the relative rotation state of the transmission sheet and the rotating shaft under the influence of a certain external force), when coiling, the rotating shaft 1 drives the transmission sheet 2 to rotate anticlockwise, the transmission sheet 2 drives the coiling wheels 3 to rotate in a linkage way (anticlockwise) through the elastic pieces 4, so as to control the traction coiling of the coil corresponding to each coiling wheel 3 (in the coiling process, the hooking teeth on the periphery of the coiling wheels 3 hook the corresponding coil longitudinally), when the yarn tension is gradually increased, the elastic pieces 4 are gradually compressed to play a role in adjusting the coil traction tension, when the coil traction tension reaches the 'coupling force' between the tension adjusting mechanism and the transmission sheet 2, the transmission sheet 2 slides (namely slips to realize the relative rotation) corresponding to the rotating shaft 1, and in this state, the coiling wheels 3 do not pull the coiling of the coil, because the rotating shaft 1 rotates anticlockwise all the time, the relative sliding (rotation) between the driving sheet 2 and the rotating shaft 1 can control the driving sheet 2 not to rotate clockwise, so that the winding tension of each row of coils is the same, and the coils can not break when the formed fabric is woven.

Preferably, the inner diameter of the driving strap 2 is equal to the outer diameter of the rotation shaft 1, and the inner diameter of the winding wheel 3 is equal to the outer diameter of the driving strap 2.

In the scheme, the transmission sheet 2 and the rotating shaft 1 and the transmission sheet 2 and the coiling wheel 3 are assembled compactly, almost no gap exists, the operation state is good, and large-scale movement cannot occur.

More specifically, as shown in fig. 1 and 2, the tension adjusting mechanism includes a pressure adjusting block 5 and a pressure adjusting member 6, a cavity is formed in the rotating shaft 1 along the axial direction thereof, a liquid filling port 11 with a seal is formed at one end of the rotating shaft 1 and communicates with the cavity, a strip-shaped slit is formed in the surface of the rotating shaft 1 along the axial direction thereof and communicates with the cavity, the pressure adjusting block 5 is sealingly assembled in the strip-shaped slit, the driving plates 2 are respectively fitted over the shaft sections of the pressure adjusting block 5 and contact the pressure adjusting block 5, a pressure adjusting hole is formed in the surface of one end of the rotating shaft 1 and communicates with the cavity, the pressure adjusting member 6 is assembled in the pressure adjusting hole to adjust the pressure in the cavity of the rotating shaft 1, the pressure adjusting block 5 is movable in the radial direction of the rotating shaft 1 under the change of the pressure in the rotating shaft 1, thereby adjusting the friction between the pressure adjusting block 5 and the driving strap 2 and realizing the balance adjustment of the driving strap 2 and the rotating shaft 1.

In the scheme, the specific adjusting process is as follows:

filling liquid into the cavity in the rotating shaft 1 through the liquid filling opening 11, then sealing the seal (such as thread seal, and the like, and realizing seal by thread connection), and then adjusting the pressure adjusting piece 6 to change the internal pressure of the rotating shaft 1, so as to force the pressure adjusting block 5 to protrude outwards slightly, thereby realizing setting or adjusting the maximum static friction force (namely the maximum yarn tension force) between the pressure adjusting block 5 and the transmission piece 2; when coiling, the revolving shaft 1 controls the transmission piece 2 to rotate anticlockwise through the pressure adjusting block 5 of the revolving shaft, the transmission piece 2 drives the coiling wheel 3 to rotate, thereby controlling the traction coiling of each coil, when the yarn tension is gradually increased, the elastic piece 4 is gradually compressed, the function of adjusting the coil traction tension is played, when the coil traction tension reaches the maximum static friction force between the pressure adjusting block 5 and the transmission piece 2, the pressure adjusting block 5 and the transmission piece 2 start to slide, the coiling wheel 3 does not pull and coil the coil any more, because the revolving shaft 1 rotates anticlockwise all the time, the sliding friction force between the pressure adjusting block 5 and the transmission piece 2 can control the transmission piece 2 not to rotate clockwise. Therefore, the coiling tension of each row of the coils is the same, and the coils can not be broken when the forming fabric is woven.

As a preferred embodiment, a plurality of strip gaps are preferably designed and uniformly distributed at intervals along the circumferential direction of the rotating shaft 1, and a pressure adjusting block 5 is arranged in each strip gap, so that during adjustment, the pressure adjusting blocks 5 are uniformly contacted with the inner side of the transmission piece 2 at multiple points, the stress is uniform, and the adjustment effect is better.

In a preferred embodiment, the pressure adjusting holes are screw holes provided along the radial direction of the rotating shaft 1, and the pressure adjusting member 6 is a nut fitted to the screw holes.

In this embodiment, the pressure adjusting part 6 is adjusted in a screwing mode, is simple to operate, has higher precision and is beneficial to fine operation.

As a preferred embodiment, as shown in fig. 3, the outer edge of the driving strap 2 is provided with an assembly notch 21 along the circumferential direction thereof, the inner edge of the winding wheel 3 is provided with a positioning portion 31 extending into the corresponding assembly notch 21 of the driving strap 2, and the elastic member 4 is disposed in the corresponding assembly notch 21 and connected between the positioning portion 31 and one end of the assembly notch 21.

In this embodiment, elastic component 4 device is between assembly breach 21 and location portion 31, and overall structure is compacter to, when coil tension crescent, elastic component 4 can play the balanced purpose between balanced driving plate 2 and the coiling wheel 3, plays certain cushioning effect to a certain extent, and simultaneously, elastic component 4 is hardly leaked outward, and structural design is more reasonable.

Preferably, the elastic member 4 is a compression spring, and both ends thereof are connected between the positioning portion 31 and one end of the fitting notch 21.

As a preferred embodiment, as shown in fig. 3, a spacer 22 is provided coaxially with one surface of the drive strap 2, and the outer diameter of the spacer 22 is larger than the outer diameter of the main body of the drive strap 2.

In this embodiment, 2 one sides of driving strap design spacer 22 for can separate each other through spacer 22 between two take-up pulley 3, can not interfere with each other, and, the design of spacer 22 makes elastic component 4 in two sets of driving strap 2 keep apart each other, when the pressurized, can not contact each other and produce the interference, ensures elastic component 4 and take-up pulley 3 and driving strap 2 independent operation, mutual noninterference.

As a preferred embodiment, as shown in fig. 3 and 4, the fitting notch 21 is a fan-shaped notch coaxial with the driving strap 2, and the positioning portion 31 is a fan-shaped structure coaxial with the winding wheel 3.

In the scheme, the assembly notch 21 is reasonable in shape design, and the structure is compact and attractive in assembly.

Preferably, the winding wheel 3 is a ratchet wheel, the teeth of which constitute the pull teeth, and the tips of the teeth are rounded.

Example 2

This embodiment provides a knitting machine including the dynamic balance tension pulling mechanism of embodiment 1.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.