Negative let-off unit

Abstract

The utility model discloses a negative let-off unit, which relates to the technical field of negative let-off, and comprises a pan head, an adjusting mechanism, a copper conduit, a sliding component, a brake component, a pulling component, a pressing plate and a connecting component, yarns are wound on the pan head, the adjusting mechanism is arranged on the yarns and below the pan head, and the copper conduit is arranged on the sliding component. The copper guide pipe is installed between the adjusting mechanism and the pan head, the sliding assembly is installed on the copper guide pipe, the brake assembly is installed on the top of the sliding assembly, the pulling assembly is installed on one side of the sliding assembly, the pressing plate is installed at the bottom of the pulling assembly, and the connecting assembly is installed between the pan head and the brake assembly. Through the arrangement mode that the yarn, the adjusting mechanism, the copper guide pipe, the sliding assembly and the brake assembly are matched, let-off of the pan head and tension of the yarn are linked together through the pulling assembly and the guide pipe assembly, and the functions of stably feeding the yarn, keeping the tension of the yarn and improving the quality of fabric are achieved.

Description

Technical Field

[0001] This utility model relates to the field of passive scripture delivery technology, and in particular to a passive scripture delivery unit. Background Technology

[0002] A warp knitting machine is a key piece of equipment used to produce knitted fabrics. Its core function is to form fabrics through the orderly arrangement and weaving of yarns. In a warp knitting machine, the warp feed from the warp head is a crucial step, responsible for evenly conveying the yarn from the warp head to the knitting area.

[0003] Currently, warp feeding in multi-head warp knitting machines mainly falls into two categories: servo motor drive and mechanical feeding. However, both methods have certain limitations, affecting the performance of the warp knitting machine and the quality of the fabric. Servo motor drive is more expensive, especially in multi-head warp knitting machines, where each head requires an independent servo motor, significantly increasing equipment costs. Furthermore, a servo motor failure can lead to machine downtime and yarn breakage, causing production interruptions and material waste. Mechanical feeding typically involves adding a damping device in front of the head to maintain yarn tension. However, since the damping of each head is difficult to be completely uniform, uneven yarn tension occurs, resulting in unstable yarn feeding and inconsistent fabric loop sizes, affecting fabric quality and appearance. Utility Model Content

[0004] The purpose of this invention is to provide a passive delivery unit to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a passive delivery unit, comprising:

[0006] A coil head, on which yarn is wound;

[0007] An adjustment mechanism is installed on the yarn and below the yarn head;

[0008] A copper conduit is installed between the adjustment mechanism and the pan head;

[0009] A sliding assembly, which is mounted on a copper conduit, is connected to an adjustment mechanism via a contact-push connection;

[0010] A braking assembly, which is mounted on top of a sliding assembly;

[0011] Pull the component to install it on one side of the sliding component;

[0012] A pressure plate, which is installed at the bottom of the pulling assembly;

[0013] A connecting assembly, which is installed between the disc head and the brake assembly.

[0014] Preferably, the adjustment mechanism includes:

[0015] A tension bar, which is connected to the yarn via a tension plate;

[0016] A tension adjustment unit, which is connected to a tension rod;

[0017] Top block, which is fixedly connected to the tension adjustment unit by a pull rope;

[0018] A screw is fixed to one side of the top block, and the tension rod drives the top block to rotate through the tension adjustment unit.

[0019] Preferably, the sliding component includes:

[0020] A sliding rod, which is slidably inserted into the inner cavity of a copper conduit;

[0021] The top sleeve is fixed to the bottom of the slide rod, and the top sleeve is engaged with the screw for a push-pull connection.

[0022] Preferably, the braking assembly includes:

[0023] A connecting seat, which is connected to a connecting assembly and clamped to the top of the slide rod;

[0024] A brake belt, one end of which is connected to a pulling assembly;

[0025] A pulley is provided, and a mounting bracket is mounted on the pulley via a rotating shaft. The brake belt is disposed on the outer wall of the pulley, and the other end of the brake belt is fixed to the mounting bracket.

[0026] Preferably, the pulling component includes:

[0027] A spring, one end of which is fixedly connected to a connecting seat;

[0028] A hook is fixedly connected to the other end of a spring, and a pressure plate is fixedly connected to the hook.

[0029] Preferably, the connection component includes:

[0030] Small sprocket, which is connected to the mounting bracket via a rotating shaft;

[0031] A large sprocket is mounted on one end of the disc head via a pivot seat, and the large sprocket and the small sprocket are connected by a chain.

[0032] The technical effects and advantages of this utility model are as follows:

[0033] This invention utilizes a combination of yarn, adjustment mechanism, copper guide tube, sliding assembly, and brake assembly. The pulling assembly and guide tube assembly facilitate the pulling of the yarn on the warp head via the coiling component. The yarn drives the tension rod to rotate via a tension plate, and a screw pushes the sliding rod, loosening the belt on the connecting seat. This allows the connecting assembly to feed the yarn onto the warp head. After feeding, the yarn loosens momentarily, the sliding rod moves downward, and the warp head can no longer rotate. Repeating this process produces continuous warp feeding with slight pauses, linking the warp feeding of the warp head with the yarn tension. This achieves stable yarn feeding, maintains yarn tension, and improves fabric quality. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall front structure of this utility model.

[0035] Figure 2 This is a schematic diagram of the overall side structure of this utility model.

[0036] In the diagram: 1. Head; 2. Yarn; 3. Adjustment mechanism; 31. Tension bar; 32. Tension adjustment unit; 33. Top block; 34. Screw; 4. Copper guide tube; 5. Sliding assembly; 51. Slide rod; 52. Top sleeve; 6. Brake assembly; 61. Connecting seat; 62. Brake belt; 63. Pulley; 7. Pulling assembly; 71. Spring; 72. Hook; 8. Pressure plate; 9. Connecting assembly; 91. Small sprocket; 92. Large sprocket. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] This utility model provides, for example Figure 1-2 The passive warp feeding unit shown includes a head 1, an adjusting mechanism 3, a copper guide tube 4, a sliding assembly 5, a braking assembly 6, a pulling assembly 7, a pressure plate 8, and a connecting assembly 9. Yarn 2 is wound on the head 1. The adjusting mechanism 3 is installed on the yarn 2 and is located below the head 1. The copper guide tube 4 is installed between the adjusting mechanism 3 and the head 1. The sliding assembly 5 is installed on the copper guide tube 4 and is connected to the adjusting mechanism 3 by contact and pushing. The braking assembly 6 is installed on the top of the sliding assembly 5. The pulling assembly 7 is installed on one side of the sliding assembly 5. The pressure plate 8 is installed at the bottom of the pulling assembly 7. The connecting assembly 9 is installed between the head 1 and the braking assembly 6.

[0039] The adjustment mechanism 3 includes a tension rod 31, a tension adjustment unit 32, a top block 33, and a screw 34. The tension rod 31 is connected to the yarn 2 through a tension plate. The tension adjustment unit 32 is connected to the tension rod 31. The top block 33 is fixedly connected to the tension adjustment unit 32 through a pull rope. The screw 34 is fixed to one side of the top block 33. The tension rod 31 drives the top block 33 to rotate through the tension adjustment unit 32. The tension adjustment unit 32 consists of a chain segment and a tension spring, which is used for the elastic rotation of the tension rod 31.

[0040] The sliding assembly 5 includes a slide rod 51 and a top sleeve 52. The slide rod 51 is slidably inserted into the inner cavity of the copper conduit 4. The top sleeve 52 is fixed to the bottom of the slide rod 51. The top sleeve 52 is fitted and pushed by the screw 34. The screw 34 pushes the top sleeve 52, so that the slide rod 51 can slide in the inner cavity of the copper conduit 4.

[0041] In addition, the brake assembly 6 includes a connecting seat 61, a brake belt 62, and a pulley 63. The connecting seat 61 is connected to the connecting assembly 9 and is clamped to the top of the slide bar 51. One end of the brake belt 62 is connected to the pulling assembly 7. The pulley 63 is mounted on a mounting bracket via a rotating shaft. The brake belt 62 is disposed on the outer wall of the pulley 63, and the other end of the brake belt 62 is fixed to the mounting bracket. The pulling of the brake belt 62 can realize the rotation of the pulley 63.

[0042] Secondly, the pulling assembly 7 includes a spring 71 and a hook 72. One end of the spring 71 is fixedly connected to the connecting seat 61, the hook 72 is fixedly connected to the other end of the spring 71, the pressure plate 8 is fixedly connected to the hook 72, and the pressure plate 8 is installed at the bottom of the slide bar 51.

[0043] Furthermore, the connecting assembly 9 includes a small sprocket 91 and a large sprocket 92. The small sprocket 91 is connected to the mounting bracket via a rotating shaft, and the large sprocket 92 is mounted on one end of the disc head 1 via a shaft seat. The large sprocket 92 and the small sprocket 91 are connected by a chain, and the small sprocket 91 is connected to the pulley 63 via the same rotating shaft, so that the pulley 63 can drive the small sprocket 91 to rotate, and the small sprocket 91 drives the large sprocket 92 to rotate via the chain, and the disc head 1 on the large sprocket 92 rotates.

[0044] The yarn 2 on the warp head 1 is pulled by the looping component. The yarn 2 pulls the tension plate on the tension rod 31. The tension plate rotates, causing the tension rod 31 to rotate. The top block 33 installed on the tension rod 31 pushes the slide rod 51 upward in the copper guide tube 4 through the screw 34. Since the connecting seat 61 clamps the slide rod 51, the connecting seat 61 also rises, causing the brake belt 62 installed on the connecting seat 61 to loosen. After the brake belt 62 loosens, the pulley 63 rotates, and the warp beam, which was originally held together by the small warp feed sprocket 91 and the large warp feed sprocket 92, can rotate with the warp head 1, realizing the warp feeding of the warp head 1. The tooth ratio between the small warp feed sprocket 91 and the large warp feed sprocket 92 determines the warp feed amount and can be changed according to actual use. When the yarn is fed, the yarn 2 loosens momentarily. At this time, the spring 71 on the connecting seat 61 also contracts due to the elastic force, causing the slide rod 51 to move downward. The top sleeve 52 on the slide rod 51 pushes the top block 33, causing the tension rod 31 to rotate. The tension spring on tension bar 31 also causes the tension plate to rebound. At this time, the brake belt 62 on pulley 63 is pressed down. As a result, neither the large nor small sprockets 91 can rotate, and the disc head 1 cannot rotate either. Then, the above actions are repeated to produce continuous, slightly paused yarn feeding.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A passive scripture delivery unit, characterized in that, include: A coil (1) on which yarn (2) is wound; Adjustment mechanism (3), which is mounted on yarn (2) and is mounted below the head (1); A copper conduit (4) is installed between the adjustment mechanism (3) and the pan head (1); A sliding assembly (5) is mounted on a copper conduit (4), and the sliding assembly (5) is connected to the adjustment mechanism (3) by contact and push. Braking assembly (6), said braking assembly (6) is mounted on top of sliding assembly (5); Pull assembly (7), said pull assembly (7) is mounted on one side of sliding assembly (5); Pressure plate (8), which is installed at the bottom of the pulling assembly (7); A connecting component (9) is installed between the disc head (1) and the brake assembly (6).

2. The passive scripture delivery unit according to claim 1, characterized in that, The adjustment mechanism (3) includes: Tension bar (31), which is connected to yarn (2) via tension plate; Tension adjustment unit (32), which is connected to tension rod (31); Top block (33), which is fixedly connected to tension adjustment unit (32) by a pull rope; A screw (34) is fixed to one side of the top block (33), and the tension rod (31) drives the top block (33) to rotate through the tension adjustment unit (32).

3. The passive scripture delivery unit according to claim 2, characterized in that, The sliding component (5) includes: The slide rod (51) is slidably inserted into the inner cavity of the copper conduit (4); Top sleeve (52) is fixed to the bottom of slide rod (51) and is engaged with screw (34) for push-pull connection.

4. The passive scripture delivery unit according to claim 1, characterized in that, The brake assembly (6) includes: A connecting seat (61) is connected to the connecting assembly (9), and the connecting seat (61) is clamped to the top of the slide rod (51); Brake belt (62), one end of which is connected to the pulling assembly (7); A pulley (63) is mounted on a mounting bracket via a rotating shaft. A brake belt (62) is disposed on the outer wall of the pulley (63), and the other end of the brake belt (62) is fixed to the mounting bracket.

5. The passive scripture delivery unit according to claim 4, characterized in that, The pulling component (7) includes: A spring (71), one end of which is fixedly connected to a connecting seat (61); The hook (72) is fixedly connected to the other end of the spring (71), and the pressure plate (8) is fixedly connected to the hook (72).

6. The passive scripture delivery unit according to claim 1, characterized in that, The connection component (9) includes: Small sprocket (91), the small sprocket (91) is connected to the mounting bracket via a rotating shaft; A large sprocket (92) is mounted on one end of a disc head (1) via a pivot seat, and the large sprocket (92) and the small sprocket (91) are connected by a chain.

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