A warp knitting machine yarn tension compensation device

Abstract

The utility model discloses a warp knitting machine yarn tension compensation device, including, send yarn unit, including support, setting in the wire roller subassembly of support front end, setting in the wire guide roller of support inner chamber upper end and setting in the limiting component of wire guide roller upper end, tension compensation unit, including connecting seat, through the rotation of screw rod drive of speed reduction motor in tension compensation unit, drive screw plate and cover plate along the axial movement of screw rod, realize the accurate adjustment of wire guide roller position, can according to yarn real -time tension demand, dynamic adjustment wire guide roller height, make yarn keep appropriate tightness in the conveying process, avoid because the loose of weaving or tension is too big due to tension deficiency, and the spring between cover plate and screw plate setting forms the elastic buffer system, can when yarn tension increases suddenly, and spring absorbs part of impact force through deformation, prevent wire guide roller displacement excessive and lead to yarn breakage, to this end ensure yarn conveying quality, and the production continuity has been guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of warp knitting machine yarn feeding technology, specifically a warp knitting machine yarn tension compensation device. Background Technology

[0002] Warp knitting machines transform yarn into fabric through high-speed weaving. The warp knitting machine mainly consists of a weaving mechanism, a guide bar traverse mechanism, a warp feeding mechanism, a traction and take-up mechanism, and a transmission mechanism. Among them, the product quality, such as the flatness of the fabric surface and the uniformity of density, directly depends on the tension stability of the yarn conveying process in the warp feeding mechanism.

[0003] Currently, the main function of the yarn feeding mechanism is to unwind the yarn and feed it into the weaving mechanism for weaving. During the yarn feeding process, tension is maintained by using a mechanical fixed counterweight tension control method. When the yarn is being transported around the fixed guide roller, the tension is maintained by the gravity of the counterweight or the elasticity of the spring, thereby ensuring the quality of yarn feeding and the quality of the subsequent products. However, when using mechanical fixed counterweights to maintain tension, since the fixed counterweights are only applicable to a single yarn specification, it is time-consuming to manually replace the counterweights or adjust the spring preload when switching between coarse and fine yarns, which will affect the continuity of production. Utility Model Content

[0004] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution for a warp knitting machine yarn tension compensation device that can solve the aforementioned problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A yarn tension compensation device for a warp knitting machine, comprising, The yarn feeding unit includes a support frame, a yarn roller assembly disposed at the front end of the support frame, a guide roller disposed at the upper end of the inner cavity of the support frame, and a limiting assembly disposed at the upper end of the guide roller. The tension compensation unit includes a connecting seat, a geared motor fixedly connected to the bottom of the inner cavity of the connecting seat, a screw connected to the output shaft of the geared motor, a threaded plate threaded to the surface of the screw, a telescopic rod fixedly connected to the top periphery of the threaded plate, a sleeve plate fixedly connected to the top of the telescopic rod, a connecting block fixedly connected to one side of the sleeve plate, a spring fixedly connected between the sleeve plate and the threaded plate, and a mounting plate fixedly connected to one side of the connecting block. As a further embodiment of this utility model: the limiting component includes a connecting plate, limiting rollers movably connected to both ends of the connecting plate via bearings, a connecting cylinder movably connected to one side of the limiting rollers via pins, and a torsion spring fixedly connected to one side of the inner cavity of the connecting cylinder and fixedly connected to the limiting rollers at the other end.

[0006] As a further embodiment of this utility model: the end of the connecting cylinder away from the limiting roller is fixedly connected to the mounting plate, the connecting plate is in contact with the surface of the guide roller, and both ends of the guide roller are mounted on one side of the mounting plate through bearing seats.

[0007] As a further embodiment of this utility model: the roller assembly includes a roller body, a limiting plate fixedly connected to both ends of the roller body, and a support base fixedly connected to both sides of the front of the bracket.

[0008] As a further embodiment of this utility model: both ends of the roller assembly are located in the inner cavity of the support base and are movably connected to the inner cavity of the support base, and one side of the limiting plate is in contact with the support base.

[0009] As a further embodiment of this utility model: the number of connecting seats is four, and they are evenly distributed on the front and rear ends of both sides of the inner cavity of the bracket. One side of the connecting seat is fixedly connected to the bracket, and the sleeve plate and spring are both sleeved on the surface of the screw.

[0010] As a further embodiment of this utility model: a through groove is provided on one side of the connecting seat, and the connecting block passes through the inner cavity of the through groove and is slidably connected to the inner cavity of the through groove.

[0011] As a further embodiment of this utility model: a limiting strip is fixedly connected to one side of the threaded plate, a limiting groove is formed on one side of the inner cavity of the connecting seat, the limiting strip is located in the inner cavity of the limiting groove, and is slidably connected to the inner cavity of the limiting groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The tension compensation unit uses a geared motor to drive the screw to rotate, which in turn moves the threaded plate and sleeve plate along the screw axis. This allows for precise adjustment of the guide roller position. The height of the guide roller can be dynamically adjusted according to the real-time tension requirements of the yarn, ensuring that the yarn maintains appropriate tension during transport. This prevents the yarn from becoming loose due to insufficient tension or from breaking due to excessive tension. At the same time, the springs between the sleeve plate and the threaded plate form an elastic buffer system. When the yarn tension increases suddenly, the springs absorb part of the impact force through deformation, preventing excessive displacement of the guide roller that could lead to yarn breakage. This ensures the quality of yarn transport and guarantees production continuity. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural view of the present invention; Figure 2 This is a three-dimensional structural view of the wire roller assembly of this utility model in its separated state; Figure 3 This is a three-dimensional structural view of the connection seat, mounting plate, guide roller and connecting plate of this utility model in the connected state; Figure 4This is a three-dimensional structural view of the connector of this utility model in cross-section; Figure 5 This is a three-dimensional structural view of the connecting cylinder of this utility model in cross-section; Figure 6 This is a utility model Figure 4 A magnified 3D view of the structure at point A in the middle; The reference numerals and names in the figure are as follows: 100. Yarn feeding unit; 110. Support frame; 120. Yarn roller assembly; 121. Yarn roller body; 122. Support seat; 123. Limiting plate; 130. Guide roller; 200. Limiting assembly; 210. Connecting plate; 220. Limiting roller; 230. Connecting cylinder; 240. Torsion spring; 300. Tension compensation unit; 310. Connecting seat; 311. Through groove; 312. Limiting groove; 320. Gear motor; 330. Screw; 340. Threaded plate; 341. Limiting strip; 350. Telescopic rod; 360. Sleeve plate; 370. Connecting block; 380. Spring; 390. Mounting plate. Detailed Implementation

[0014] 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.

[0015] Example 1 like Figure 1-6 As shown, this is the first embodiment of the present invention. This embodiment provides a yarn tension compensation device for a warp knitting machine, comprising: The yarn feeding unit 100 includes a support 110, a yarn roller assembly 120 disposed at the front end of the support 110, a guide roller 130 disposed at the upper end of the inner cavity of the support 110, and a limiting assembly 200 disposed at the upper end of the guide roller 130. The tension compensation unit 300 includes a connecting seat 310, a geared motor 320 fixedly connected to the bottom of the inner cavity of the connecting seat 310, a screw 330 drivenly connected to the output shaft of the geared motor 320, a threaded plate 340 threadedly connected to the surface of the screw 330, a telescopic rod 350 fixedly connected to the top periphery of the threaded plate 340, a sleeve plate 360 ​​fixedly connected to the top of the telescopic rod 350, a connecting block 370 fixedly connected to one side of the sleeve plate 360, a spring 380 fixedly connected between the sleeve plate 360 ​​and the threaded plate 340, and a mounting plate 390 fixedly connected to one side of the connecting block 370.

[0016] like Figure 1-6As shown, the limiting component 200 prevents the yarn from detaching from the surface of the guide roller 130, ensuring that the yarn is always conveyed along the preset path. When it is necessary to adjust and compensate for the yarn tension, the screw 330 is driven to rotate by the reduction motor 320, and the threaded plate 340 moves axially along the screw 330. Since the threaded plate 340 is linked with the sleeve plate 360 ​​through the telescopic rod 350, the sleeve plate 360, the mounting plate 390, and the guide roller 130 can be moved synchronously. When the position of the guide roller 130 is raised, the yarn tension increases; when the position of the guide roller 130 is lowered, the yarn tension decreases. At the same time as the adjustment and compensation, the spring 380 set between the sleeve plate 360 ​​and the threaded plate 340 forms an elastic buffer system. When the yarn tension increases suddenly, the spring 380 absorbs part of the impact force through deformation, so that the yarn maintains a suitable tension during the conveying process, avoiding loose weaving due to insufficient tension or yarn breakage due to excessive tension, thereby ensuring the quality of yarn conveying and ensuring the continuity of production.

[0017] Example 2 Reference Figure 1 , 2 3 and 5 are the second embodiment of this utility model, which is based on the previous embodiment.

[0018] In this embodiment, the limiting component 200 includes a connecting plate 210, a limiting roller 220 movably connected to both ends of the connecting plate 210 via bearings, a connecting cylinder 230 movably connected to one side of the limiting roller 220 via a pin, and a torsion spring 240 fixedly connected to one side of the inner cavity of the connecting cylinder 230 and fixedly connected to the limiting roller 220 at the other end.

[0019] The end of the connecting cylinder 230 away from the limiting roller 220 is fixedly connected to the mounting plate 390. The connecting plate 210 is in contact with the surface of the guide roller 130. Both ends of the guide roller 130 are mounted on one side of the mounting plate 390 through bearing seats.

[0020] The roller assembly 120 includes a roller body 121, a limiting plate 123 fixedly connected to both ends of the roller body 121, and a support base 122 fixedly connected to both sides of the front of the bracket 110.

[0021] Both ends of the roller assembly 120 are located in the inner cavity of the support base 122 and are movably connected to the inner cavity of the support base 122. One side of the limiting disk 123 is in contact with the support base 122.

[0022] like Figure 1 , 2As shown in Figures 3 and 5, the connecting plate 210 serves as the basic support structure, with its two ends movably connected to the limiting roller 220 via bearings. This ensures that the limiting roller 220 can rotate freely around its own axis. One end of the torsion spring 240 is fixed to the inner wall of the connecting cylinder 230, and the other end is connected to the limiting roller 220. The restoring force of the torsion spring 240 will drive the limiting roller 220 to move to the surface of the guide roller 130, ensuring that the yarn always moves along the surface of the guide roller 130 during the conveying process and does not deviate from the preset path. The support seat 122 is fixed to both sides of the front of the bracket 110. The inner cavity is designed to be semi-circular and is movably connected to both ends of the yarn roller body 121, allowing the yarn roller body 121 to rotate freely. The yarn roller body 121 is the core component for winding the yarn. It is fixed to both ends of the yarn roller body 121 via the limiting plate 123 and contacts one side of the support seat 122 to prevent the yarn roller body 121 from being misaligned during the unwinding process.

[0023] Example 3 Reference Figure 1 , 3 4 and 6 are the third embodiment of this utility model, which is based on the first two embodiments.

[0024] In this embodiment, there are four connecting seats 310, which are evenly distributed on the front and rear ends of both sides of the inner cavity of the bracket 110. One side of the connecting seat 310 is fixedly connected to the bracket 110, and the sleeve plate 360 ​​and the spring 380 are both sleeved on the surface of the screw 330.

[0025] A through groove 311 is provided on one side of the connecting seat 310, and the connecting block 370 passes through the inner cavity of the through groove 311 and is slidably connected to the inner cavity of the through groove 311.

[0026] A limiting strip 341 is fixedly connected to one side of the threaded plate 340, and a limiting groove 312 is opened on one side of the inner cavity of the connecting seat 310. The limiting strip 341 is located in the inner cavity of the limiting groove 312 and is slidably connected to the inner cavity of the limiting groove 312.

[0027] like Figure 1 , 3As shown in Figures 4 and 6, four connecting seats 310 are evenly distributed, with two located on both sides of the front end of the inner cavity of the bracket 110 and two on both sides of the rear end, forming a symmetrical structure. The connecting seats 310 are fixed to the bracket 110, thus ensuring the smooth operation of the subsequent transmission. A connecting block 370 passes through the through groove 311 and slides through it. The width of the through groove 311 is slightly larger than the diameter of the connecting block 370, allowing axial movement but preventing circumferential rotation. One end of the connecting block 370 is fixed to the side of the sleeve plate 360, and the other end extends out of the through groove 311 and connects to the mounting plate 390. When the sleeve plate 360... When moving, the mounting plate 390 is moved synchronously by the connecting block 370, thereby adjusting the position of the guide roller 130. When the screw 330 rotates, the threaded plate 340 tends to rotate under the action of the thread force. The limiting groove 312 ensures that the threaded plate 340 moves only along the axial direction by constraining the circumferential degree of freedom of the limiting strip 341, thereby limiting the threaded plate 340. The through groove 311 constrains the rotation of the sleeve plate 360, and the limiting groove 312 constrains the rotation of the threaded plate 340. Together, they ensure that the adjustment direction of the tension compensation unit 300 moves strictly along the axial direction of the screw 330.

[0028] In use, first fix the bracket 110 in the designated position on the warp knitting machine, place the yarn roller body 121 in the inner cavity of the support base 122, and ensure that the limiting plate 123 contacts the support base 122 to prevent the yarn roller body 121 from moving axially. After installation, start the warp knitting machine, and the yarn will unwind from the yarn roller assembly 120. The yarn will be conveyed to the weaving mechanism via the guide roller 130 for weaving. During the yarn conveying process, the return spring force of the torsion spring 240 drives the connecting plate 210 and the limiting roller 220 to rotate around the pin shaft. The movement of the guide roller 320 causes the limiting roller 220 to contact the surface of the guide roller 130, thus preventing the yarn from detaching from the surface of the guide roller 130 and ensuring that the yarn is always conveyed along the preset path. If yarn tension adjustment and compensation are required, and the tension is insufficient, the geared motor 320 rotates forward to drive the screw 330 to rotate, thereby causing the threaded plate 340 to move axially along the screw 330. Since the threaded plate 340 is linked to the sleeve plate 360 ​​through the telescopic rod 350, it can drive the sleeve plate 360, the mounting plate 390, and the guide roller. The synchronous displacement of the guide roller 130 increases yarn tension by raising its position. If the tension is too high, the geared motor 320 reverses to drive the screw 330 to rotate, causing the threaded plate 340 to move axially along the screw 330. Since the threaded plate 340 is linked to the sleeve plate 360 ​​via the telescopic rod 350, it can drive the sleeve plate 360, mounting plate 390, and guide roller 130 to move synchronously. Lowering the position of the guide roller 130 reduces yarn tension. By adjusting the position of the guide roller 130, the yarn path length can be directly adjusted, thereby changing the tension. Simultaneously, the spring 380 between the sleeve plate 360 ​​and the threaded plate 340 forms an elastic buffer system. When the yarn tension increases suddenly, the spring 380 absorbs part of the impact force through deformation, preventing excessive displacement of the guide roller 130 that could cause yarn breakage. This ensures the yarn maintains appropriate tension during transport, preventing loose weaving due to insufficient tension or yarn breakage due to excessive tension, thus ensuring yarn transport quality and production continuity.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A yarn tension compensation device for a warp knitting machine, characterized in that, include, The yarn feeding unit (100) includes a bracket (110), a yarn roller assembly (120) disposed at the front end of the bracket (110), a guide roller (130) disposed at the upper end of the inner cavity of the bracket (110), and a limiting assembly (200) disposed at the upper end of the guide roller (130). The tension compensation unit (300) includes a connecting seat (310), a geared motor (320) fixedly connected to the bottom of the inner cavity of the connecting seat (310), a screw (330) connected to the output shaft of the geared motor (320), a threaded plate (340) threadedly connected to the surface of the screw (330), a telescopic rod (350) fixedly connected to the top periphery of the threaded plate (340), a sleeve plate (360) fixedly connected to the top of the telescopic rod (350), a connecting block (370) fixedly connected to one side of the sleeve plate (360), a spring (380) fixedly connected between the sleeve plate (360) and the threaded plate (340), and a mounting plate (390) fixedly connected to one side of the connecting block (370).

2. The yarn tension compensation device for a warp knitting machine according to claim 1, characterized in that, The limiting assembly (200) includes a connecting plate (210), a limiting roller (220) movably connected to both ends of the connecting plate (210) via bearings, a connecting cylinder (230) movably connected to one side of the limiting roller (220) via a pin, and a torsion spring (240) fixedly connected to one side of the inner cavity of the connecting cylinder (230) and fixedly connected to the limiting roller (220) at the other end.

3. The yarn tension compensation device for a warp knitting machine according to claim 2, characterized in that, The end of the connecting cylinder (230) away from the limiting roller (220) is fixedly connected to the mounting plate (390). The connecting plate (210) is in contact with the surface of the guide roller (130). Both ends of the guide roller (130) are mounted on one side of the mounting plate (390) through bearing seats.

4. The yarn tension compensation device for a warp knitting machine according to claim 1, characterized in that, The roller assembly (120) includes a roller body (121), a limiting plate (123) fixedly connected to both ends of the roller body (121), and a support base (122) fixedly connected to both sides of the front of the bracket (110).

5. A yarn tension compensation device for a warp knitting machine according to claim 4, characterized in that, Both ends of the roller assembly (120) are located in the inner cavity of the support base (122) and are movably connected to the inner cavity of the support base (122). One side of the limiting disk (123) is in contact with the support base (122).

6. A yarn tension compensation device for a warp knitting machine according to claim 1, characterized in that, The number of connecting seats (310) is four, and they are evenly distributed on the front and rear ends of the inner cavity of the bracket (110). One side of the connecting seat (310) is fixedly connected to the bracket (110). The sleeve plate (360) and the spring (380) are both sleeved on the surface of the screw (330).

7. A yarn tension compensation device for a warp knitting machine according to claim 1, characterized in that, A through groove (311) is provided on one side of the connecting seat (310), and the connecting block (370) passes through the inner cavity of the through groove (311) and is slidably connected to the inner cavity of the through groove (311).

8. A yarn tension compensation device for a warp knitting machine according to claim 1, characterized in that, A limiting strip (341) is fixedly connected to one side of the threaded plate (340), and a limiting groove (312) is opened on one side of the inner cavity of the connecting seat (310). The limiting strip (341) is located in the inner cavity of the limiting groove (312) and is slidably connected to the inner cavity of the limiting groove (312).

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