A weft feeding device for a loom

Abstract

This utility model relates to the field of weaving machine technology and discloses a weft feeding device for a weft feeding machine, including two sets of telescopic parts and a traction clamp and a pusher plate respectively fixedly installed on the telescopic parts. The lower end face of the traction clamp has a pull groove, and the middle part of the pusher plate has a docking groove for accommodating the traction clamp. A thread clamp for locking the thread is provided inside the pusher plate. The pusher plate is composed of two sets of rectangular plates, and the thread clamp is located between the two sets of rectangular plates. The thread clamp is formed by bending an elastic metal plate. In this utility model, the pressing part presses the weft thread into the pull groove to prevent the weft thread from detaching. When the traction clamp moves to the edge of the warp thread, the adjusting knob lifts the adjusting part, which in turn causes the adjusting part to drive the pressing part to rise around the top of the adjusting part, releasing the weft thread. This step is repeated to feed the weft, reducing the probability of the weft thread being misaligned or detaching from the traction clamp and pusher plate during the thread pushing process.

Description

Technical Field

[0001] This utility model relates to the field of weaving machine technology, and in particular to a weft feeding device for a weaving machine. Background Technology

[0002] The rapier loom is an important piece of equipment widely used in the textile industry. It is primarily used to feed the weft yarn through the rapier into the shed, where it interweaves with the warp yarn to form fabric. Compared to traditional shuttle looms, rapier looms offer advantages such as higher production efficiency, lower noise, and easier operation, thus gaining widespread use in modern textiles. However, with increasing fabric production speeds and rising demands for fabric quality, rapier looms also face some technical challenges in the weft feeding process.

[0003] The weft feed device is one of the core components of a rapier loom. Its function is to accurately and stably feed the weft yarn into the shed and ensure that the weft and warp yarns interweave precisely. However, in actual production, the weft yarn may deviate or detach from the rapier during the weft feed process, causing the weft yarn to fail to enter the shed accurately. This affects the quality of the fabric and may even lead to machine downtime and equipment damage. This weft yarn detachment problem is particularly prominent in high-speed production or when using weft yarns made of special materials.

[0004] The main causes of weft yarn separation include: excessively high rapier speed preventing the weft yarn from following its trajectory; poor fixation between the weft yarn and the rapier; and the physical properties of the weft yarn itself (such as flexibility and coefficient of friction) being unsuitable for high-speed weft feeding. To address these issues, existing technologies typically enhance the fixation between the weft yarn and the rapier by optimizing the rapier structure, improving the contact surface between the rapier and the weft yarn, or using auxiliary devices. However, these measures still have limitations in practical applications, especially when dealing with diverse fabric materials and complex production processes. Existing fixation methods are insufficient to meet the needs of all scenarios, and the risk of weft yarn separation remains relatively high.

[0005] Therefore, how to further reduce the probability of weft slippage by increasing the ability to fix the weft during the weft feeding process has become an important direction in the current research and development of rapier loom technology.

[0006] Therefore, we propose a weft feeding device for a loom. Utility Model Content

[0007] The present invention aims to solve the technical problems existing in the prior art and provide a weft feeding device for a weaving machine.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a weft feeding device for a weft feeding machine, comprising two sets of telescopic parts and a traction clamp and a pusher plate respectively fixedly installed on the telescopic parts. The lower end face of the traction clamp is provided with a pull groove, and the middle part of the pusher plate is provided with a docking groove for accommodating the traction clamp. A thread clamp for locking the thread is provided inside the pusher plate. The pusher plate is composed of two sets of rectangular plates, and the thread clamp is disposed between the two sets of rectangular plates. The thread clamp is formed by bending an elastic metal plate, one end of which is fixedly installed on the rectangular plate above the pusher plate, and the other end is a free end that can slide on the rectangular plate below the pusher plate. A concave surface is provided at the bend of the thread clamp to form a thread locking opening.

[0009] Preferably, the front end face of the traction clamp is a downward sloping surface forming a pressure surface, and a return groove is provided in the middle of the pressure surface. The return groove runs through the left and right sides of the traction clamp. A first pressure plate is also fixedly installed on the rectangular plate above the push plate. The first pressure plate is an elastic metal plate and the free end of the first pressure plate abuts against the top of the clamp. A pressure button is also fixedly installed on the side wall of the first pressure plate near the docking groove.

[0010] Preferably, the draw groove is further fixedly installed with an anti-loosening part consisting of an adjustment part, a transmission part, and a pressing part. The adjustment part is fixedly installed on the upper wall of the draw groove and is inclined. The transmission part is located at the free end of the adjustment part and extends horizontally to the pressing surface to the side wall of the draw groove. The pressing part is located at the free end of the transmission part and extends inclinedly downward to the draw groove and fits against the side wall of the draw groove. The pressing part and the arc surface of the draw groove form a space for storing the weft thread.

[0011] Preferably, an adjustment knob is also included, which coincides with the portion of the anti-loosening part extending outside the traction clamp in a horizontal projection.

[0012] Preferably, the adjustment part of the anti-loosening part has an upper groove and a lower groove respectively from top to bottom, and the adjustment knob is located between the upper groove and the lower groove.

[0013] Preferably, the lower end face of the pressure line is an inclined surface.

[0014] Beneficial effects

[0015] This utility model provides a weft feeding device for a weft feeding machine. It has the following beneficial effects:

[0016] This weft feeding device for a loom involves a telescopic section that, during the feeding process, slides the weft yarn along the yarn clamp into the yarn clamping opening, where it is secured. Subsequently, the traction clamp and the push plate approach each other. When the traction clamp inserts into the mating groove, the pressure surface contacts the pressure button, pressing down on the yarn clamp by pressing the pressure button and the first pressure plate. This prevents the weft yarn from contacting the traction clamp and avoids it sliding towards the position between the two sets of yarn clamping openings due to pressure. When the pressure button slides into the return groove, the first pressure plate slides slightly upwards, no longer pressing on the yarn clamping opening. This causes the weft thread inside the thread clamp to be positioned within the thread pull groove. At this point, the traction clamp and pusher plate retract, and the traction clamp carries the weft thread away. As it carries away the weft thread, the pressing part presses the weft thread into the thread pull groove to prevent it from detaching. When the traction clamp moves to the edge of the warp thread, the adjusting knob lifts the adjusting part, which in turn causes the adjusting part to lift the pressing part around the top of the adjusting part, releasing the weft thread. This process is repeated to feed the weft thread, reducing the probability of the weft thread being misaligned or detaching from the traction clamp and pusher plate during the thread push process. Attached Figure Description

[0017] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the traction clamp of this utility model;

[0021] Figure 3 This is a side view of the traction clamp of this utility model;

[0022] Figure 4 This is a schematic diagram of the push block structure of this utility model;

[0023] Figure 5 This is a side view of the traction process of this utility model.

[0024] Legend:

[0025] 1. Telescopic part; 2. Traction clamp; 3. Pull wire groove; 4. Push wire plate; 5. Connecting groove; 6. Wire clamp; 7. Wire clamping port; 8. Pressing surface; 9. Return groove; 10. First pressing plate; 11. Press button; 12. Adjustment part; 13. Transmission part; 14. Wire pressing part; 15. Upper groove; 16. Lower groove; 17. Adjustment button. Detailed Implementation

[0026] 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.

[0027] A weft feeding device for a loom, such as Figures 1-5 As shown, it includes two sets of telescopic parts 1 and a traction clamp 2 and a pusher plate 4 respectively fixedly installed on the telescopic parts 1. The lower end face of the traction clamp 2 is provided with a pull groove 3, which is hook-shaped, to facilitate the pull of the weft yarn from the pusher plate 4. The middle part of the pusher plate 4 is provided with a docking groove 5 to accommodate the traction clamp 2. A clamping clip 6 for clamping the yarn is provided inside the pusher plate 4. Before pushing the yarn, the weft yarn is clamped in the clamping clip 6. When the two sets of telescopic parts 1 are activated, the traction clamp 2 and the pusher plate 4 move closer to each other. When the traction clamp 2 is inserted into the docking groove 5, the pull groove 3 pulls the weft yarn out from the clamping clip 6, completing the weft feeding.

[0028] Specifically, the pusher plate 4 consists of two sets of rectangular plates, one above the other. The wire clamp 6 is located between the two sets of rectangular plates. The wire clamp 6 is formed by bending an elastic metal plate. One end of the wire clamp 6 is fixedly installed on the upper rectangular plate of the pusher plate 4, and the other end is a free end that can slide on the lower rectangular plate of the pusher plate 4. The bent part of the wire clamp 6 has a concave surface to form a wire clamping opening 7. Due to the elasticity of the wire clamp 6, when the weft thread slides into the pusher plate 4, it slides along the inclined surface of the wire clamp 6 into the wire clamping opening 7 and is held and fixed in the wire clamping opening 7 by the elastic force. With the activation of the telescopic part 1, the weft thread is sent out.

[0029] Furthermore, the front end face of the traction clamp 2 is a downward sloping surface forming a pressure surface 8. A return groove 9 is provided in the middle of the pressure surface 8, and the return groove 9 penetrates the left and right sides of the traction clamp 2. Correspondingly, a first pressure plate 10 is also fixedly installed on the rectangular plate above the push plate 4. The first pressure plate 10 is an elastic metal plate, and the free end of the first pressure plate 10 abuts against the top of the wire clamp 6. When the first pressure plate 10 is pressed down, it causes the wire clamp 6 to deform, causing the wire clamping opening 7 to move down. The first pressure plate 10 rests against the wire clamp 6. A pressure button 11 is also fixedly installed on the side wall of the docking groove 5. When the traction clamp 2 is inserted into the docking groove 5, the pressure surface 8 first contacts the pressure button 11, causing the first pressure plate 10 to press down. During this process, the wire clamping port 7 moves down to avoid the traction clamp 2. When the pressure surface 8 moves past the wire clamping port 7, the pressure button 11 slides into the return groove 9. At this time, the wire clamping port 7 moves up and drives the weft thread to fall into the pull groove 3. At this time, the traction clamp 2 retracts, and the weft thread is transferred to the pull groove 3, completing the transfer.

[0030] Furthermore, to prevent the weft yarn from coming loose when the traction clamp 2 pulls back, an anti-loosening part consisting of an adjustment part 12, a transmission part 13, and a pressing part 14 is fixedly installed inside the pull groove 3. The adjustment part 12 is fixedly installed on the upper wall of the pull groove 3 and is inclined. The transmission part 13 is located at the free end of the adjustment part 12 and extends horizontally to the pressing surface 8 to the side wall of the pull groove 3. The pressing part 14 is located at the free end of the transmission part 13 and extends inclinedly downward to the pull groove 3 and fits against the side wall of the pull groove 3. The pressing part 14 and the arc surface of the pull groove 3 form a space for storing the weft yarn. After the weft yarn slides into this space through the pressing part 14, it is limited and clamped by the pressing part 14 and the pull groove 3 together, and will not come loose when retracting.

[0031] Furthermore, when the weft yarn reaches the edge of the warp yarn, it needs to be released in time. For this purpose, the textile machine is also equipped with an adjustment knob 17. The adjustment knob 17 and the part of the anti-loosening part extending outside the traction clamp 2 are aligned in the horizontal projection, so that the adjustment knob 17 can only interfere with the anti-loosening part. The adjustment part 12 of the anti-loosening part has an upper groove 15 and a lower groove 16 from top to bottom. The adjustment knob 17 is located between the upper groove 15 and the lower groove 16. When the traction clamp 2 retracts, at the position where the weft yarn needs to be released, the adjustment knob 17 lifts the adjustment part 12 from behind, driving the pressing part 14 to release the weft yarn. Then the adjustment knob 17 moves through the lower groove 16 to the top of the adjustment part 12. When the traction clamp 2 is extended, the adjustment knob 17 presses the adjustment part 12 from above and slides out from the upper groove 15, waiting for the next retraction of the traction clamp 2 to lift the adjustment part 12.

[0032] In a preferred embodiment, the lower end face of the pressing part 14 is an inclined surface, which facilitates the weft thread to slide in from the inclined surface and then be fixed by the pressing part 14 and the thread groove 3.

[0033] The working principle of this utility model is as follows: During the delivery process, the telescopic part 1 slides the weft yarn along the yarn clamp 6 into the yarn clamping port 7 and is fixed by the yarn clamping port 7. Subsequently, the traction clamp 2 and the push plate 4 approach each other. When the traction clamp 2 is inserted into the docking groove 5, the pressing surface 8 is in contact with the pressing button 11 and presses down the yarn clamp 6 by pressing the pressing button 11 and the first pressing plate 10, so that the weft yarn does not come into contact with the traction clamp 2 and avoids the weft yarn from sliding to the position before the two sets of yarn clamping ports 7 due to pressure. When the pressing button 11 slides into the return groove 9, the first pressing plate 10 slides up slightly and no longer presses the yarn clamp. The weft thread inside the slot 7 is then positioned within the pull groove 3. At this point, the traction clamp 2 and the push plate 4 retract, and the traction clamp 2 carries the weft thread away. As it carries away the weft thread, the pressing part 14 presses the weft thread into the pull groove 3 to prevent it from coming off. When the traction clamp 2 moves to the edge of the warp thread, the adjusting knob 17 lifts the adjusting part 12, which in turn causes the adjusting part 12 to drive the pressing part 14 to lift around the top of the adjusting part 12, thus releasing the weft thread. This process is repeated to feed the weft thread, reducing the probability of the weft thread being misaligned or coming off the traction clamp 2 and the push plate 4 during the push process.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A weft insertion device for a loom, comprising two groups of expansion sections (1) and a pulling clamp (2) and a thread pusher plate (4) respectively fixedly mounted on the expansion sections (1), characterized in that: The lower end face of the traction clamp (2) is provided with a pull groove (3), and the middle part of the push plate (4) is provided with a docking groove (5) for accommodating the traction clamp (2). The push plate (4) is provided with a wire clamp (6) for clamping the wire. The push plate (4) is composed of two sets of rectangular plates, and the wire clamp (6) is located between the two sets of rectangular plates. The wire clamp (6) is formed by bending an elastic metal plate. One end is fixedly installed on the rectangular plate above the push plate (4), and the other end is a free end that can slide on the rectangular plate below the push plate (4). The bent part of the wire clamp (6) is provided with a concave surface to form a wire clamping opening (7).

2. The weft feeding device for a loom according to claim 1, characterized in that: The front end face of the traction clamp (2) is a downward inclined surface forming a pressure surface (8). A return groove (9) is provided in the middle of the pressure surface (8). The return groove (9) passes through the left and right sides of the traction clamp (2). A first pressure plate (10) is also fixedly installed on the upper rectangular plate of the push plate (4). The first pressure plate (10) is an elastic metal plate and the free end of the first pressure plate (10) abuts against the top of the wire clamp (6). A button (11) is also fixedly installed on the side wall of the first pressure plate (10) near the docking groove (5).

3. The weft feeding device for a loom according to claim 1, characterized in that: The draw groove (3) is also fixedly installed with an anti-loosening part consisting of an adjustment part (12), a transmission part (13) and a pressing part (14). The adjustment part (12) is fixedly installed on the upper wall of the draw groove (3) and is inclined. The transmission part (13) is located at the free end of the adjustment part (12) and extends horizontally to the pressing surface (8) to the side wall of the draw groove (3). The pressing part (14) is located at the free end of the transmission part (13) and extends inclinedly downward to the draw groove (3) and fits against the side wall of the draw groove (3). The pressing part (14) and the arc surface of the draw groove (3) form a space for storing weft threads.

4. The weft feeding device for a loom according to claim 1, characterized in that: It also includes an adjustment knob (17), which coincides with the portion of the anti-loosening part extending outside the traction clamp (2) in a horizontal projection.

5. A weft feeding device for a loom according to claim 4, characterized in that: The adjustment part (12) of the anti-loosening part is provided with an upper groove (15) and a lower groove (16) from top to bottom, and the adjustment knob (17) is located between the upper groove (15) and the lower groove (16).

6. A weft feeding device for a loom according to claim 3, characterized in that: The lower end face of the pressure line part (14) is an inclined surface.

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