Automatic yarn tension adjusting device

Abstract

The utility model discloses an automatic yarn tension adjusting device which comprises an installation frame and two guide rollers, the two guide rollers are located on the two sides of the installation frame respectively, a tensioning assembly is installed outside the installation frame, and the tensioning assembly comprises a supporting frame rotationally connected with the interior of the installation frame through a bearing. A tensioning wheel is rotationally connected to each of the two ends of the supporting frame, a gear is coaxially fixed to the rotating end of the supporting frame, a vertically-arranged limiting guide rail is fixedly connected to the outer portion of the mounting frame through a supporting frame, a rack matched with the gear slidably sleeves the outer portion of the limiting guide rail, and a balancing weight is fixedly connected to the outer portion of the rack; according to the utility model, through the arrangement of the tensioning assembly, when the yarn is loosened, the loosening state can be eliminated in time, and the risk of production delay caused by manual adjustment lagging is effectively avoided, so that the stability of the product quality is ensured.

Description

Technical Field

[0001] This utility model relates to the field of textile technology, specifically to an automatic yarn tension adjustment device. Background Technology

[0002] In textile production, the stability of yarn tension directly affects fabric quality, production efficiency, and equipment lifespan. Tension fluctuations can lead to problems such as yarn breakage, uneven fabric density, and pattern deformation. Especially in high-speed weaving or complex pattern processing, improper tension control can significantly increase the defect rate.

[0003] A search revealed a utility model patent with Chinese patent publication number CN222226721U, which discloses a yarn tension adjusting device, including an adjusting mechanism, a fixing mechanism, and a rotating mechanism. The fixing mechanism is fixedly disposed on one side of the adjusting mechanism, and the rotating mechanism is fixedly disposed on the fixing mechanism. The adjusting mechanism includes a fixing plate, a nested ring, a threaded groove, a threaded rod, a bearing, a connecting port, a turntable, a fixing port, and a crank handle. The nested ring is fixedly disposed on one side of the fixing plate.

[0004] The aforementioned device uses a threaded rod to drive a fixed ring to adjust the yarn tension. However, the yarn inevitably becomes loose during transmission. If it cannot be adjusted in time, it will inevitably affect subsequent work, and there is room for improvement. Utility Model Content

[0005] The purpose of this invention is to provide an automatic yarn tension adjustment device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic yarn tension adjustment device, comprising a mounting frame and two guide rollers, the two guide rollers being respectively located on both sides of the mounting frame, a tensioning assembly being mounted on the outside of the mounting frame, the tensioning assembly including a support frame rotatably connected inside the mounting frame via bearings, a tensioning wheel being rotatably connected to each end of the support frame, a gear being coaxially fixed to the rotating end of the support frame, a vertically arranged limiting guide rail being fixedly connected to the outside of the mounting frame via a support frame, a rack adapted to the gear being slidably sleeved on the outside of the limiting guide rail, and a counterweight being fixedly connected to the outside of the rack.

[0007] When yarn slack occurs, it can be eliminated in time, effectively avoiding the risk of production delays caused by the lag in manual adjustment, thereby ensuring the stability of product quality. The counterweight drives the rack to move downward along the limit guide rail. The counterweight drives the gear to rotate clockwise through meshing. The gear drives the support frame to rotate synchronously. The slack part of the yarn will be folded, thereby tightening the yarn again. Under the action of tension, the gear can resist the push force of the rack and prevent it from moving further downward. If the yarn slacks again during the transmission process due to changes in transmission speed or yarn path, the counterweight will continue to move downward, driving the tensioning wheel to fold the slack part again, ensuring that the yarn always remains taut.

[0008] As a further preferred embodiment of this technical solution, an extension plate is fixedly connected to the outer wall of one end of the gear, a screw is threadedly connected inside the extension plate, and a contact head is provided at the end of the screw.

[0009] As a further preferred embodiment of this technical solution, a fixing component is installed inside the mounting bracket. The fixing component includes a screw threaded to the bottom of the mounting bracket. A fitting groove is provided at the bottom of the mounting bracket. One end of the screw extends into the fitting groove. A pressure plate is rotatably connected to one end of the screw. Two limiting rods are slidably inserted inside the mounting bracket. Both limiting rods are fixedly connected to the outside of the pressure plate.

[0010] The mounting slot is fitted onto the outside of the vertical plate of the external equipment. The screw is then driven to rotate by the wheel. The pressure plate, which is restricted by the limit rod, can only move horizontally. When the screw rotates, it can drive the pressure plate to move closer to the external vertical plate. With the fitting slot, the position of the mounting frame can be fixed. If the external equipment does not have a vertical plate, bolts can also be passed through the extension block outside the mounting frame for connection and fixation. When the device is working.

[0011] As a further preferred embodiment of this technical solution, a limiting tube is inserted inside the sleeve groove and is located at the top of the two limiting rods and on one side of the pressure plate.

[0012] As a further preferred embodiment of this technical solution, the contact head is made of rubber material.

[0013] As a further preferred embodiment of this technical solution, the thread helix angle of the external thread groove of the lead screw is smaller than the equivalent friction angle.

[0014] As a further preferred embodiment of this technical solution, the mounting bracket is provided with two extension blocks on the outside, and each of the two extension blocks has a through hole inside.

[0015] This utility model provides an automatic yarn tension adjustment device, which has the following beneficial effects:

[0016] (1) By setting a tensioning component, this utility model can eliminate the slack state in time when the yarn becomes slack, effectively avoid the risk of production delay caused by the lag of manual adjustment, and thus ensure the stability of product quality. The counterweight drives the rack to move downward along the limit guide rail. The counterweight drives the gear to rotate clockwise through meshing. The gear drives the support frame to rotate synchronously. The slack part of the yarn will be folded, so that the yarn is tightened again. Under the action of tension, the gear can resist the push of the rack and prevent it from moving downward. If the yarn experiences changes in transmission speed or yarn path during transmission, and slack occurs again, the counterweight will continue to move downward, driving the tensioning wheel to fold the slack part again, ensuring that the yarn always remains taut.

[0017] (2) This utility model sets a fixing component to fit the sleeve groove outside the vertical plate of the external equipment, and then drives the screw to rotate through the wheel. The pressure plate restricted by the limit rod can only move horizontally. When the screw rotates, it can drive the pressure plate to move closer to the external vertical plate. With the sleeve groove, the position of the mounting frame can be fixed. If the external equipment does not have a vertical plate, the bolt can also be passed through the extension block outside the mounting frame for connection and fixation. When the device is working. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall second-view structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the overall third-view structure of this utility model;

[0021] Figure 4 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0022] In the diagram: 1. Mounting frame; 2. Guide roller; 3. Tensioning assembly; 4. Fixing assembly; 301. Support frame; 302. Tensioning wheel; 303. Gear; 304. Limiting guide rail; 305. Rack; 306. Counterweight; 307. Extension plate; 308. Screw; 309. Contact head; 401. Sleeve groove; 402. Lead screw; 403. Pressure plate; 404. Limiting rod; 405. Limiting tube. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] This utility model provides a technical solution: such as Figure 2 and Figure 3As shown, in this embodiment, an automatic yarn tension adjusting device includes a mounting frame 1 and two guide rollers 2. The guide rollers 2 are external yarn guiding equipment components, and the wiring method is as follows: Figure 1 and Figure 2 As shown, two guide rollers 2 are located on both sides of the mounting frame 1. A tensioning assembly 3 is installed on the outside of the mounting frame 1. The tensioning assembly 3 includes a support frame 301 rotatably connected to the inside of the mounting frame 1 via bearings. A tensioning wheel 302 is rotatably connected to both ends of the support frame 301. A gear 303 is coaxially fixed to the rotating end of the support frame 301. A vertically arranged limiting guide rail 304 is fixedly connected to the outside of the mounting frame 1 via a support frame. A rack 305 adapted to the gear 303 is slidably sleeved on the outside of the limiting guide rail 304. A counterweight 306 is fixedly connected to the outside of the rack 305.

[0025] An extension plate 307 is fixedly connected to the outer wall of one end of the gear 303. A screw 308 is threadedly connected inside the extension plate 307. A contact head 309 is provided at the end of the screw 308.

[0026] The counterweight 306 drives the rack 305 to move downward along the limiting guide rail 304. The counterweight 306 drives the gear 303 to rotate clockwise through meshing. The gear 303 drives the support frame 301 to rotate synchronously. The slack part of the yarn will be folded, so that the yarn is tightened again. Under the action of tension, the gear 303 can resist the thrust of the rack 305 and prevent it from moving downward. If the yarn slacks again due to changes in transmission speed or yarn path during transmission, the counterweight 306 will continue to move downward, driving the tensioning wheel 302 to fold the slack part again, ensuring that the yarn always remains taut. If it is necessary to reduce the tension of the yarn, the screw 308 is twisted to move it closer to the mounting frame 1 along the extension plate 307. The contact head 309 at the end of the screw 308 is in contact with the mounting frame 1. When the rack 305 drives the gear 303 to rotate, it will increase the resistance, so the yarn does not need to provide more tension, and the tension of the yarn will also decrease.

[0027] like Figure 2 and Figure 3 As shown, a fixing component 4 is installed inside the mounting bracket 1. The fixing component 4 includes a screw rod 402 threaded to the bottom of the mounting bracket 1. A fitting groove 401 is provided at the bottom of the mounting bracket 1. One end of the screw rod 402 extends into the fitting groove 401. A pressure plate 403 is rotatably connected to one end of the screw rod 402. Two limiting rods 404 are slidably inserted inside the mounting bracket 1. Both limiting rods 404 are fixedly connected to the outside of the pressure plate 403.

[0028] The sleeve groove 401 is sleeved on the outside of the vertical plate of the external equipment. Then, the screw 402 is rotated by the wheel. The pressure plate 403, which is restricted by the limit rod 404, can only move horizontally. When the screw 402 rotates, it can drive the pressure plate 403 to move closer to the external vertical plate. With the sleeve groove 401, the position of the mounting bracket 1 can be fixed.

[0029] like Figure 1 and Figure 2 As shown, a limiting tube 405 is inserted inside the sleeve groove 401 (multiple limiting tubes 405 of different models are prepared to adapt to the installation of external vertical plates of different thicknesses), and it is located at the top of the two limiting rods 404 and on one side of the pressure plate 403, which can prevent the position of the pressure plate 403 from changing.

[0030] like Figure 4 As shown, the contact head 309 is made of rubber material, which ensures friction while also preventing the mounting bracket 1 from being worn due to the movement of the screw 308.

[0031] like Figure 4 As shown, the thread helix angle of the external thread groove of the lead screw 402 is less than the equivalent friction angle, which gives it a self-locking property and can prevent external forces from affecting the position of the lead screw 402.

[0032] like Figure 1 and Figure 2 As shown, the mounting bracket 1 has two extension blocks on its exterior, and each extension block has a through hole. If the external equipment does not have a vertical plate, bolts can be passed through the extension blocks on the exterior of the mounting bracket 1 for connection and fixation. When the device is working.

[0033] This utility model provides an automatic yarn tension adjustment device, the specific working principle of which is as follows:

[0034] The fitting slot 401 is fitted onto the outside of the vertical plate of the external equipment. The screw 402 is then rotated via a wheel. The pressure plate 403, restricted by the limiting rod 404, can only move horizontally. When the screw 402 rotates, it drives the pressure plate 403 towards the external vertical plate. This, combined with the fitting slot 401, allows for the fixing of the mounting frame 1. If the external equipment does not have a vertical plate, bolts can be passed through the extension block outside the mounting frame 1 for connection and fixation. During operation, the counterweight 306 drives the rack 305 to move downwards along the limiting guide rail 304. The counterweight 306, through meshing, drives the gear 303 to rotate clockwise. The gear 303 drives the support frame 301 to rotate synchronously. The slack portion of the yarn is folded, thus tightening the yarn again. Under tension, the gear... 303 can resist the thrust of rack 305, preventing it from moving further down. If the yarn experiences changes in transmission speed or yarn path during transmission, and slack occurs again, counterweight 306 will continue to move down, driving tension wheel 302 to fold the slack portion again, ensuring the yarn remains taut. The two tension wheels 302 fold the yarn, ensuring the device can handle longer slack yarns. If it is necessary to reduce the yarn tension, twist screw 308 to move it along extension plate 307 toward mounting bracket 1. The contact head 309 at the end of screw 308 fits against mounting bracket 1. When rack 305 drives gear 303 to rotate, it will increase resistance, eliminating the need for the yarn to provide greater tension, and the yarn tension will also decrease.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic yarn tension adjusting device, comprising a mounting frame (1) and two guide rollers (2), characterized in that: The two guide rollers (2) are respectively located on both sides of the mounting frame (1). A tensioning assembly (3) is installed on the outside of the mounting frame (1). The tensioning assembly (3) includes a support frame (301) rotatably connected to the inside of the mounting frame (1) via a bearing. A tensioning wheel (302) is rotatably connected to both ends of the support frame (301). A gear (303) is coaxially fixed to the rotating end of the support frame (301). A vertically arranged limiting guide rail (304) is fixedly connected to the outside of the mounting frame (1) via a support frame. A rack (305) adapted to the gear (303) is slidably sleeved on the outside of the limiting guide rail (304). A counterweight (306) is fixedly connected to the outside of the rack (305).

2. The automatic yarn tension adjusting device according to claim 1, characterized in that: An extension plate (307) is fixedly connected to the outer wall of one end of the gear (303), and a screw (308) is threadedly connected inside the extension plate (307). A contact head (309) is provided at the end of the screw (308).

3. The automatic yarn tension adjusting device according to claim 1, characterized in that: The mounting bracket (1) is equipped with a fixing component (4). The fixing component (4) includes a screw rod (402) threaded to the bottom of the mounting bracket (1). The bottom of the mounting bracket (1) is provided with a sleeve groove (401). One end of the screw rod (402) extends into the sleeve groove (401). One end of the screw rod (402) is rotatably connected to a pressure plate (403). Two limiting rods (404) are slidably inserted inside the mounting bracket (1). Both limiting rods (404) are fixedly connected to the outside of the pressure plate (403).

4. The automatic yarn tension adjusting device according to claim 3, characterized in that: The sleeve groove (401) is inserted with a limiting tube (405) and is located at the top of the two limiting rods (404) and on one side of the pressure plate (403).

5. The automatic yarn tension adjusting device according to claim 2, characterized in that: The contact head (309) is made of rubber material.

6. The automatic yarn tension adjusting device according to claim 3, characterized in that: The thread helix angle of the external thread groove of the lead screw (402) is less than the equivalent friction angle.

7. The automatic yarn tension adjusting device according to claim 1, characterized in that: The mounting bracket (1) has two extension blocks on its exterior, and each extension block has a through hole inside.

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