A waste edge disc structure of a rapier loom

Abstract

This application relates to a waste edge tray structure for a rapier loom, belonging to the field of loom technology. The waste edge tray structure includes a support, a fixed shaft, a tray body, and a limiting member. The support extends along the height direction; one end of the fixed shaft is fixed to the support, and the other end extends horizontally. The fixed shaft is manufactured by hard chrome plating; the tray body is I-shaped and sleeved on the fixed shaft, with yarn wound around it. The yarn can be pulled out by the loom, thereby driving the tray body to rotate; the limiting member is sleeved on the other end of the fixed shaft and restricts the movement of the tray body. This application addresses the problem that current rapier looms use a steel shaft as the support shaft for the waste edge tray, resulting in high friction and easy wear.

Description

Technical Field

[0001] This application relates to the field of loom technology, and in particular to a waste selvage disc structure for a rapier loom. Background Technology

[0002] In the field of textile machinery, the rapier loom, as an important weaving device, plays a crucial role in the modern textile industry. With the continuous development of the textile industry, higher demands are being placed on the production efficiency, product quality, stability, and durability of rapier looms. Various components of the rapier loom are also being continuously optimized and improved to adapt to the ever-growing market demands.

[0003] In the traditional rapier loom waste selvage structure design, a common steel shaft is typically used as the support shaft to achieve the yarn winding and unwinding functions, with the main body of the selvage mounted on this shaft. The common steel shaft is directly fixed to the bracket, and the main body of the selvage can rotate around the shaft to achieve yarn feeding.

[0004] However, the traditional waste sheath structure of rapier looms has obvious defects. The surface hardness and corrosion resistance of ordinary steel shafts are poor, making them prone to wear and corrosion during long-term use. This leads to an increase in the coefficient of friction between the shaft and the main body of the sheath, which not only increases the energy consumption of the equipment but also shortens its service life. Utility Model Content

[0005] This application provides a waste edge disc structure for a rapier loom, which solves the problem that the current waste edge discs of rapier looms use steel shafts as support shafts, resulting in high friction and easy wear.

[0006] A waste selvage disc structure for a rapier loom includes:

[0007] The support extends along the height direction;

[0008] A fixed shaft, one end of which is fixed to the bracket and the other end of which extends horizontally, is made by hard chrome plating;

[0009] The main body of the tray is I-shaped and fitted with the fixed shaft. Yarn is wound around the main body of the tray, and the yarn can be pulled out by the loom to drive the main body of the tray to rotate.

[0010] A limiting component is fitted onto the other end of the fixed shaft and restricts the movement of the tray body.

[0011] By adopting the above technical solution, replacing the ordinary steel shaft with a hard chrome-plated fixed shaft significantly improves surface hardness and corrosion resistance. The low coefficient of friction of the hard chrome plating effectively reduces wear between the tray body and the fixed shaft, extending the service life of the equipment. Locking and disassembling of the tray body are achieved by using a limiting device to mount the fixed shaft.

[0012] In one embodiment, the limiting member includes elastic rubber, which is sleeved on the fixed shaft and abuts against the tray body.

[0013] By adopting the above technical solution, the elastic rubber sleeve is fixed to the shaft and abuts against the main body of the material tray, which can provide a stable limiting force, buffer vibration, and limit the rotational speed of the main body of the material tray. The elastic properties of rubber make the installation and removal of the limiting component more convenient, and maintenance can be completed without additional tools.

[0014] In one embodiment, the limiting member further includes a cylindrical body, which is fixed to the elastic rubber. A fixing hole is provided on the cylindrical body, and a telescopic member is provided inside the fixing shaft. The telescopic member can extend and retract on the surface of the fixing shaft, and the fixing hole can be aligned with the telescopic member so that the telescopic member extends out of the fixing hole.

[0015] By adopting the above technical solution, the cylinder body is fixed to the elastic rubber, and the locking component is double-fixed through the cooperation of the fixing hole and the telescopic component. When the cylinder body is fitted into the fixing shaft, the elastic rubber first compresses the telescopic component, and after the fixing hole is aligned, the locking block pops out and locks, preventing the locking component from accidentally falling off.

[0016] In one embodiment, the telescopic member includes a spring and a snap-fit ​​block, the fixed shaft is provided with a receiving groove, the spring is disposed in the receiving groove, and the snap-fit ​​block is fixed to the spring and can extend out of the receiving groove.

[0017] By adopting the above technical solution, the spring and locking block have a simple structure and low cost. The spring's elastic force drives the locking block to extend and retract, achieving stable mechanical locking. The locking block's pop-out and retraction actions are rapid, and with the cushioning of the elastic rubber, the locking or releasing of the limiting component can be completed in a short time, meeting the needs of frequent tray changes.

[0018] In one embodiment, the support is provided with an adjustment component, which is located at the upper end of the fixed shaft and abuts against the material tray body. The adjustment component is capable of adjusting the rotational speed of the material tray body.

[0019] By adopting the above technical solution, when the waste yarn is pulled out, if the material tray rotates too fast (excessive speed), it will cause the yarn to loosen and become tangled; if it rotates too slowly (excessive resistance), it will cause the yarn to be overstretched or even break. By applying a controllable braking torque to the material tray through the adjustment component, its speed is indirectly controlled, thereby maintaining a constant yarn tension.

[0020] In one embodiment, the adjustment assembly includes a fixing member, an abutment member, and an adjustment member. The fixing member is disposed on the bracket and located on the upper side of the fixing shaft. The abutment member and the adjustment member are rotatably fixed to the fixing member. The abutment member can abut against the yarn and thus rotate. The main body of the tray has protruding edges at both ends along the length direction of the fixing shaft, and the adjustment member abuts against the outer surface of the protruding edges.

[0021] By employing the above technical solution, the abutment component senses the thickness of the yarn roll wound on the main body of the tray in real time. When there is more yarn and the thickness is greater, the abutment component is lifted to a higher position; as the yarn thickness decreases, the abutment component descends accordingly. The lifting and lowering movement of the abutment component rotates, causing the adjusting component to change the contact pressure or friction between the adjusting component and the convex edge of the tray. During the winding process, to maintain a constant yarn linear speed, the tray rotation speed needs to increase as the yarn roll thickness decreases. This system can automatically and in reverse adjust the braking force, thereby ensuring that the yarn tension remains at a relatively stable level throughout the entire process from a full tray to an empty tray.

[0022] In one embodiment, the fixing member includes a fixing block and a fixing rod. The fixing block is disposed on the bracket, and the fixing rod is fixed to the fixing block and extends along the length direction of the fixing axis. The abutting member includes a rotating block and an abutting block. The rotating block is disposed at the end of the fixing rod away from the bracket and is rotatable. The end of the rotating block is provided with an abutting block, which abuts against the yarn. The adjusting member includes an adjusting block and a limiting band. The adjusting block is disposed at the upper end of the rotating block. One end of the limiting band is connected to the adjusting block and is movable along the length direction of the adjusting block. The other end abuts against the outer surface of the protrusion and is finally fixed to the fixing rod.

[0023] By adopting the above technical solution, the limiting band partially wraps around the raised edge of the material tray. This braking method has a large contact area, resulting in stable and smooth braking performance. When there is a lot of yarn, the abutment block is lifted high, causing the rotating block to rise, the adjusting block to be raised, and the limiting band to be tightened, thus exerting a greater braking force on the material tray. When there is less yarn, the abutment block descends, the rotating block sinks, and the adjusting block lowers, reducing the tension on the limiting band and correspondingly reducing the braking force on the material tray. Furthermore, the tension can be finely adjusted by changing the position of the limiting band's end on the adjusting block, thereby maintaining a constant tension and achieving a negative correlation between braking force and yarn thickness, which helps maintain the yarn tension at a essentially constant level.

[0024] In one embodiment, the adjusting member further includes an adjusting bolt, the adjusting block having a through hole extending along the length of the adjusting block, the adjusting bolt passing through the through hole and fixed to the limiting band, the adjusting bolt being able to move through the through hole and thus move the limiting band.

[0025] By adopting the above technical solution, the sliding of the bolt in the through hole adds another dimension to tension adjustment. As the angle of the rotating block changes, the movement of the bolt in the through hole can be manually controlled, which alters the lever arm or angle of the pulling restraint band, thereby further correcting the tension variation curve. This allows tension compensation to be not a simple linear relationship, but a specific curve that better reflects actual needs, making the adjustment more precise.

[0026] In one embodiment, the adjusting member further includes a protrusion, a lead screw, and a first rotating member. The protrusion is provided in two and located on both sides of the adjusting block along its length. The lead screw passes through the two protrusions and is rotatable. The first rotating member is provided at one end of the adjusting block away from the rotating block and is fixed to one end of the lead screw. The lead screw is provided with a moving block, and the moving block is fixed to the limiting band.

[0027] By adopting the above technical solution, a manual fine-tuning mechanism is formed. The operator can rotate the first rotating component to drive the lead screw, causing the moving block with the fixed restraining belt to move up and down. This allows the operator to precisely set and calibrate the basic braking force of the entire system according to the different tensions required by different types and counts of yarn. When the restraining belt wears out after a period of use, it can be easily retightened through this mechanism to compensate for the wear.

[0028] In one embodiment, the adjusting member further includes two elastic members, one of which is disposed between the adjusting block and the limiting band, and the other of which is disposed between the limiting band and the fixing rod.

[0029] By employing the above technical solution, when the loom suddenly starts or changes speed, an impact force is generated. The spring can be stretched instantaneously, absorbing this impact energy and preventing the yarn from breaking due to excessive instantaneous tension. The presence of the spring makes the entire braking system flexible, effectively filtering out minor tension fluctuations caused by factors such as non-roundness of the feed tray and bearing vibration, resulting in smoother and more stable tension output.

[0030] In summary, this application includes at least one beneficial effect:

[0031] 1. Replacing the ordinary steel shaft with a hard chrome-plated fixed shaft significantly improves surface hardness and corrosion resistance. The low coefficient of friction of the hard chrome plating effectively reduces wear between the tray body and the fixed shaft, extending the equipment's service life. Locking and disassembling of the tray body are achieved by using a limiting device to mount the fixed shaft.

[0032] 2. The abutment component senses the thickness of the yarn roll wound on the main body of the tray in real time. When there is more yarn and the thickness is greater, the abutment component is lifted to a higher position; as the yarn thickness decreases, the abutment component will descend accordingly. The lifting and lowering movement of the abutment component will rotate the adjusting component, changing the contact pressure or friction between the adjusting component and the tray's raised edge. During the winding process, in order to maintain a constant yarn linear speed, the tray's rotation speed needs to increase as the yarn roll thickness decreases. This system can automatically and in reverse adjust the braking force, thereby ensuring that the yarn tension remains at a relatively stable level throughout the entire process from a full tray to an empty tray.

[0033] 3. A manual fine-tuning mechanism is formed. The operator can drive the lead screw by rotating the first rotating component, causing the moving block with the restraining belt fixed to it to move up and down. This allows the operator to accurately set and calibrate the basic braking force of the entire system according to the different tensions required by different types and counts of yarn. When the restraining belt wears out after a period of use, it can be easily retightened through this mechanism to compensate for the wear. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the waste edge disc structure of a rapier loom provided in an embodiment of this application;

[0035] Figure 2 This is a rear view schematic diagram of the waste edge disc structure of a rapier loom provided in an embodiment of this application;

[0036] Figure 3 yes Figure 1 Enlarged view of section A;

[0037] Figure 4 This is a schematic diagram of the overall structure of the waste edge disc structure of a rapier loom provided in the second embodiment of this application;

[0038] Figure 5 yes Figure 4 Enlarged view of section B.

[0039] Explanation of reference numerals in the attached drawings: 1. Bracket; 2. Fixed shaft; 21. Telescopic component; 3. Material tray body; 31. Protruding edge; 4. Limiting component; 41. Elastic rubber; 42. Cylinder; 421. Fixing hole; 5. Adjusting component; 51. Fixing component; 511. Fixing block; 512. Fixing rod; 52. Abutting component; 521. Rotating block; 522. Abutting block; 53. Adjusting component; 531. Adjusting block; 5311. Through hole; 532. Restricting band; 533. Adjusting bolt; 534. Protrusion; 535. Lead screw; 536. First rotating component; 537. Elastic component. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-5The waste edge disc structure of the rapier loom provided in this application will be described in further detail.

[0041] Example 1

[0042] Please see Figure 1-5 The waste edge tray structure of the rapier loom provided in this application embodiment includes a bracket 1, a fixed shaft 2, a tray body 3, and a limiting member 4.

[0043] like Figure 1 As shown, bracket 1 extends along the height direction. Specifically, bracket 1 is the supporting component of the entire waste edge disc structure. It extends along the height direction, providing stable support for components such as the fixed shaft 2. Bracket 1 is generally made of metal materials, such as stainless steel or carbon steel, which have high strength and stability. Bracket 1 can be a welded structure, where multiple metal rods are welded together to form the required shape; or it can be a one-piece structure, manufactured through casting or forging processes. Its shape can be designed according to actual installation requirements, for example, it can be columnar, plate-shaped, etc.

[0044] One end of the fixed shaft 2 is fixed to the bracket 1, and the other end extends horizontally. It is manufactured using a hard chrome plating process. Specifically, the fixed shaft 2 is one of the key components of this waste tray structure. The hard chrome plating layer has excellent wear resistance and corrosion resistance, effectively reducing the coefficient of friction between the fixed shaft 2 and the tray body 3, thereby reducing energy consumption and extending the equipment's service life. One end of the fixed shaft 2 is fixed to the bracket 1 by welding, bolting, or other methods to ensure its stability. The other end extends horizontally, providing support and a shaft for rotation of the tray body 3.

[0045] The tray body 3 is mounted on the fixed shaft 2, and the limiting component 4 is mounted on the other end of the fixed shaft 2, restricting the movement of the tray body 3. This improves the durability of the equipment and facilitates the replacement of the tray body 3. Specifically, the tray body 3 is I-shaped and wound with yarn. The yarn can be pulled out by the loom, thereby driving the tray body 3 to rotate. The tray body 3 is usually made of plastic or metal materials, such as engineering plastics or aluminum alloys. Plastic materials have the advantages of being lightweight and low-cost; metal materials have high strength and durability. The I-shaped design allows the yarn to be wound more stably on the tray body 3, reducing the possibility of the yarn slipping off. The bracket 1 is located above the loom, facilitating the pulling out of the yarn.

[0046] A limiting component 4 is fitted onto the other end of the fixed shaft 2 and restricts the movement of the tray body 3. The function of the limiting component 4 is to prevent the tray body 3 from moving axially on the fixed shaft 2, ensuring the stable rotation of the tray body 3. The limiting component 4 is designed to allow for convenient and quick replacement of the tray body 3. In this embodiment, the limiting component 4 is an elastic rubber 41, which is fitted onto the fixed shaft 2 and abuts against the tray body 3. The elastic rubber 41 has good elasticity and flexibility, allowing it to fit tightly onto the fixed shaft 2 and abut against the tray body 3, thereby effectively restricting the movement of the tray body 3. The elastic rubber 41 can be made of natural rubber or synthetic rubber, such as nitrile rubber or silicone rubber. Natural rubber has good elasticity and wear resistance; synthetic rubber has better oil resistance and aging resistance. The installation of the elastic rubber 41 is very simple; it only needs to be fitted onto the fixed shaft 2.

[0047] like Figures 2 to 3 As shown, the support 1 is equipped with an adjustment component 5, which is located at the upper end of the fixed shaft 2 and abuts against the material tray body 3. The adjustment component 5 can adjust the rotational speed of the material tray body 3. The adjustment component 5 can precisely control the rotational speed of the material tray body 3 according to actual production needs, ensuring the yarn feeding quality and the overall weaving effect of the loom. Specifically, the adjustment component 5 includes a fixing member 51, an abutting member 52, and an adjusting member 53. The fixing member 51 is located on the support 1 and on the upper side of the fixed shaft 2. The abutting member 52 and the adjusting member 53 are rotatably fixed to the fixing member 51. The abutting member 52 can abut against the yarn and thus rotate. The material tray body 3 has protruding edges 31 at both ends along the length direction of the fixed shaft 2. The adjusting member 53 abuts against the outer surface of the protruding edges 31.

[0048] In this embodiment, the fixing member 51 includes a fixing block 511 and a fixing rod 512. The fixing block 511 is disposed on the bracket 1, and the fixing rod 512 is fixed to the fixing block 511 and extends along the length direction of the fixing shaft 2. The fixing block 511 and the fixing rod 512 are generally made of metal materials, such as aluminum alloy, copper alloy, etc. Their function is to provide a base for the installation and support of the abutment member 52 and the adjusting member 53. The fixing block 511 can be fixed to the bracket 1 by bolt connection or welding, and the fixing rod 512 can be fixed to the fixing block 511 by welding or threaded connection. The abutment member 52 includes a rotating block 521 and an abutment block 522. A rotating block 521 is located at the end of the fixed rod 512 away from the support 1 and is rotatable. The rotating block 521 is arc-shaped and extends downward. An abutment block 522 is located at the end of the rotating block 521. The abutment block 522 is cylindrical and abuts against the yarn. As the yarn is continuously pulled out, the thickness of the yarn wound on the main body 3 of the material tray decreases, causing the rotating block 521 to rotate downward. During the yarn winding process, the yarn linear speed needs to be kept constant; therefore, as the yarn thickness decreases, the rotation speed of the material tray needs to increase. The rotating block 521 can be fitted with the fixed rod 512 to ensure smooth rotation.

[0049] The adjusting component 53 includes an adjusting block 531 and a limiting band 532. The adjusting block 531 is located at the upper end of the rotating block 521 and can rotate with the rotating block 521. One end of the limiting band 532 is connected to the adjusting block 531 and can move along the length direction of the adjusting block 531. The other end of the limiting band 532 abuts against the outer surface of the protrusion 31 and is finally fixed to the fixing rod 512. In this embodiment, the adjusting block 531 has a through hole 5311 extending along the length direction of the adjusting block 531. The adjusting component 53 also includes an adjusting bolt 533, which passes through the through hole 5311 and is fixed to the limiting band 532. The adjusting bolt 533 can move in the through hole 5311 to finely adjust the tension on the limiting band 532. The adjusting bolt 533 may include a screw and a nut. The screw passes through a through hole 5311 and connects to a limiting band 532. The nut is fitted onto the screw and abuts against the adjusting block 531. The position of the screw can be adjusted by loosening the nut, and then tightened for fixation. The limiting band 532 may be a synthetic fiber band such as nylon or polyester. These materials have high strength, wear resistance, and corrosion resistance, and can withstand large tension and frequent movement during adjustment. They can also adapt to vibration and temperature changes in the loom's working environment, thereby ensuring more stable and reliable speed control of the feed tray body 3. The weight of the abutting block 522 must be greater than the sum of the weights of the rotating block 521 and the adjusting block 531 to ensure that the abutting block can stably abut against the yarn.

[0050] The adjusting member 53 may also include two elastic members 537. One elastic member 537 is located between the adjusting block 531 and the limiting band 532, and the other elastic member 537 is located between the limiting band 532 and the fixing rod 512. The elastic members 537 may be springs or other elastic components, which can play a role in buffering and adjusting, and ensure the tension of the limiting band 532 is stable.

[0051] The working process of this waste edge tray structure is as follows: When not in use, the yarn thickness wound on the tray body 3 is large, and the rotating block 521 is abutted upwards, thus the adjusting block 531 is raised, which exerts a large pulling force on the limiting band 532, restricting the rotation of the tray body 3. As the yarn is used continuously and the yarn thickness decreases, the abutting block 522 still abuts against the yarn surface under its own weight, and the rotating block 521 will rotate downwards with the adjusting block 531. Since one end of the limiting band 532 is connected to the adjusting block 531, and the other end is fixed to the fixing rod 512 after partially wrapping around the convex edge 31, the descent of the adjusting block 531 will effectively shorten the distance between the two fixed ends of the limiting band 532, thereby reducing the stretching degree and tension of the limiting band 532. The reduction in tension directly leads to a corresponding reduction in the frictional braking force applied to the convex edge 31. This allows the tray body 3 to rotate at a higher speed to compensate for the decreasing linear speed caused by the reduction in diameter. Meanwhile, the tension on the restraining belt 532 can be finely adjusted by moving the adjusting bolt 533 in the through hole 5311 throughout the process, thus maintaining the yarn tension at a relatively constant level throughout the unwinding process.

[0052] The implementation principle of this embodiment is as follows: the entire waste edge tray structure is stably supported by the bracket 1. The fixed shaft 2, which has undergone hard chrome plating, reduces wear between itself and the tray body 3, improving the durability of the equipment. The tray body 3 is wound with yarn, allowing it to rotate smoothly when the yarn is pulled out by the loom. The limiting component 4 can quickly restrict the movement of the tray body 3 and also facilitates the replacement of the tray body 3, improving production efficiency. The adjustment component 5 can automatically adjust the rotational speed of the tray body 3 according to the yarn usage, ensuring a stable yarn output speed. This structural design effectively solves the problems of easy wear of ordinary steel shafts and inconvenient operation of the limiting method in the prior art, and has made significant improvements and contributions to the prior art.

[0053] Example 2

[0054] like Figures 4 to 5As shown, this embodiment differs from the previous embodiment in that the adjusting member 53 may further include a first rotating member 536, a lead screw 535, and protrusions 534. Specifically, two protrusions 534 are provided and located on both sides of the adjusting block 531 along its length. The lead screw 535 passes through the two protrusions 534 and is rotatable. The first rotating member 536 is located at the end of the adjusting block 531 away from the rotating block 521 and is fixed to one end of the lead screw 535. A movable block is sleeved on the lead screw 535, and the movable block is fixed to the limiting belt 532. When the yarn is continuously used, the rotation of the first rotating member 536 controls the rotation of the lead screw 535, thereby causing the movable block to move on the lead screw 535 with the limiting belt 532 for fine adjustment, ensuring stable yarn delivery. The first rotating member 536 can be a handwheel, knob, etc., for convenient manual control by the operator.

[0055] The limiting component 4 also includes a cylindrical body 42, which is fixed together with an elastic rubber 41. The elastic rubber 41 also abuts against the main body 3 of the tray. A fixing hole 421 is provided on the cylindrical body 42. A telescopic component 21 is provided inside the fixed shaft 2, which can extend and retract on the surface of the fixed shaft 2. Specifically, the telescopic component 21 includes a spring and a locking block. The fixed shaft 2 has a receiving groove, and the spring is located in the receiving groove. The locking block is fixed to the spring, and initially extends out of the receiving groove. When the limiting component 4 is installed, the locking block is first abutted by the elastic rubber 41 and retracts into the receiving groove. Until the elastic rubber 41 abuts against the main body 3 of the tray, at which point the fixing hole 421 is aligned with the receiving groove, the spring force will cause the locking block to extend out of the receiving groove and insert into the fixing hole 421, thereby fixing the limiting component 4. The telescopic component 21 can also be replaced by other structures with elasticity and telescopic function.

[0056] The implementation principle of this embodiment is as follows: the limiting member 4, composed of elastic rubber 41 and cylinder 42, works in conjunction with the telescopic member 21 inside the fixed shaft 2 to achieve quick installation and disassembly of the limiting member 4. The elastic rubber 41 abuts against the tray body 3, which, together with the adjusting component 5, restricts the movement of the tray body 3. At the same time, the cooperation between the telescopic member 21 and the fixing hole 421 makes the limiting member 4 more firmly fixed on the fixed shaft 2. This structural design enhances the stability of the limiting member 4.

[0057] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A waste selvage disc structure for a rapier loom, characterized in that, include: Support (1), extending along the height direction; A fixed shaft (2) is fixed at one end to the bracket (1) and extends horizontally at the other end. The fixed shaft (2) is made by hard chrome plating. The main body of the tray (3) is in the shape of an I and is fitted with the fixed shaft (2). The main body of the tray (3) is wound with yarn, which can be pulled out by the loom to drive the main body of the tray (3) to rotate. The limiting member (4) is sleeved on the other end of the fixed shaft (2) and restricts the movement of the tray body (3).

2. The waste selvage disc structure for a rapier loom according to claim 1, characterized in that, The limiting member (4) includes an elastic rubber (41), which is sleeved on the fixed shaft (2) and abuts against the tray body (3).

3. The waste selvage disc structure for a rapier loom according to claim 2, characterized in that, The limiting member (4) also includes a cylindrical body (42), which is fixed to the elastic rubber (41). A fixing hole (421) is provided on the cylindrical body (42). A telescopic member (21) is provided inside the fixing shaft (2). The telescopic member (21) can extend and retract on the surface of the fixing shaft (2). The fixing hole (421) can be aligned with the telescopic member (21) so that the telescopic member (21) extends out of the fixing hole (421).

4. The waste selvage disc structure for a rapier loom according to claim 3, characterized in that, The telescopic component (21) includes a spring and a snap-fit ​​block. The fixed shaft (2) is provided with a receiving groove. The spring is located in the receiving groove. The snap-fit ​​block is fixed to the spring and can extend out of the receiving groove.

5. The waste selvage disc structure for a rapier loom according to claim 1, characterized in that, The bracket (1) is provided with an adjustment component (5), which is located at the upper end of the fixed shaft (2) and abuts against the material tray body (3). The adjustment component (5) can adjust the rotation speed of the material tray body (3).

6. The waste selvage disc structure for a rapier loom according to claim 5, characterized in that, The adjustment component (5) includes a fixing member (51), an abutment member (52), and an adjustment member (53). The fixing member (51) is located on the bracket (1) and on the upper side of the fixed shaft (2). The abutment member (52) and the adjustment member (53) are rotatably fixed to the fixing member (51). The abutment member (52) can abut against the yarn and thus rotate. The tray body (3) has protruding edges (31) at both ends along the length direction of the fixed shaft (2). The adjustment member (53) abuts against the outer surface of the protruding edges (31).

7. The waste selvage disc structure for a rapier loom according to claim 6, characterized in that, The fixing member (51) includes a fixing block (511) and a fixing rod (512). The fixing block (511) is disposed on the bracket (1). The fixing rod (512) is fixed to the fixing block (511) and extends along the length direction of the fixing shaft (2). The abutting member (52) includes a rotating block (521) and an abutting block (522). The rotating block (521) is disposed at the end of the fixing rod (512) away from the bracket (1) and is rotatable. The end of the rotating block (521) is provided with an abutment block (522), which abuts against the yarn. The adjusting member (53) includes an adjusting block (531) and a limiting band (532). The adjusting block (531) is located at the upper end of the rotating block (521). One end of the limiting band (532) is connected to the adjusting block (531) and can move along the length direction of the adjusting block (531). The other end abuts against the outer surface of the protrusion (31) and is finally fixed to the fixing rod (512).

8. The waste selvage disc structure for a rapier loom according to claim 7, characterized in that, The adjusting member (53) further includes an adjusting bolt (533). The adjusting block (531) has a through hole (5311) extending along the length of the adjusting block (531). The adjusting bolt (533) passes through the through hole (5311) and is fixed to the limiting band (532). The adjusting bolt (533) can move in the through hole (5311) and thus move the limiting band (532).

9. The waste selvage disc structure for a rapier loom according to claim 7, characterized in that, The adjusting member (53) further includes a protrusion (534), a lead screw (535), and a first rotating member (536). There are two protrusions (534) located on both sides of the adjusting block (531) along the length direction. The lead screw (535) passes through the two protrusions (534) and can rotate. The first rotating member (536) is located at one end of the adjusting block (531) away from the rotating block (521) and is fixed to one end of the lead screw (535). The lead screw (535) is provided with a moving block, and the moving block is fixed to the limiting band (532).

10. The waste selvage disc structure of a rapier loom according to claim 7, characterized in that, The adjusting member (53) further includes an elastic member (537), and there are two elastic members (537). One elastic member (537) is located between the adjusting block (531) and the limiting band (532), and the other elastic member (537) is located between the limiting band (532) and the fixing rod (512).

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