Yarn breaking prevention device and method for rayon rayon fabric weaving

Abstract

The invention discloses a rayon rayon fabric weaving anti-yarn-breaking device and method, and relates to the technical field of spinning equipment. A rayon rayon fabric weaving anti-yarn-breaking device comprises a mounting frame and a pay-off assembly arranged on the mounting frame, and further comprises a driving rod arranged on the mounting frame in a sliding mode, a rayon limiting assembly is arranged at one end of the driving rod, rayon penetrates through the rayon limiting assembly to be connected with a weaving machine, and the rayon limiting assembly is connected with the weaving machine. One end of the driving rod is connected with the mounting frame, the other end of the driving rod is provided with a counter weight with the adjustable weight, the mounting frame is provided with a Hall type handle, the Hall type handle is in transmission connection with the driving rod through a connecting assembly, and the Hall type handle controls the wire unwinding speed of the wire unwinding assembly; through linkage of the driving rod, the counter weight and the Hall type handle, the pay-off speed is adjusted in real time according to the weaving speed, the pay-off speed and the weaving speed are dynamically matched, yarn breakage caused by uneven tension of rayon is avoided, and the weaving stability is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of textile equipment, and in particular relates to a yarn-breaking prevention device for weaving rayon and rayon fabrics. Background Art

[0002] In the textile industry, regenerated cellulose fiber fabrics such as rayon (artificial silk) and rayon (artificial cotton) are widely used due to their softness and breathability. However, the strength of such wires is relatively low, and the yarn may break during the weaving process due to unstable tension, mismatch between the pay-off speed and the weaving speed, etc., affecting production efficiency and product quality.

[0003] Existing devices mostly use fixed counterweights or simple mechanical connecting rod structures to achieve tension control, which cannot respond to dynamic changes in weaving speed in real time. For example, when the weaving machine starts or stops or the speed fluctuates, the rayon tension will increase or decrease instantly. Due to inertia and transmission lag, traditional mechanical structures are difficult to quickly adjust the pay-off speed, resulting in the rayon being broken or loosely accumulated, and even causing wire entanglement failure. In view of the above problems, a rayon-cotton fabric weaving anti-yarn breakage device is proposed. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a yarn-breaking prevention device for weaving rayon and rayon fabrics that can overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0006] A yarn-breaking prevention device for weaving rayon and rayon fabrics comprises a mounting frame and a wire-paying assembly arranged on the mounting frame, and also comprises a driving rod slidably arranged on the mounting frame, one end of the driving rod is provided with a wire limiting assembly, the rayon passes through the rayon limiting assembly and is connected to a weaving machine, the other end of the driving rod is provided with a counterweight with adjustable weight, the mounting frame is provided with a Hall-type handle, the Hall-type handle is transmission-connected to the driving rod through a connecting assembly, and the Hall-type handle controls the wire-paying speed of the wire-paying assembly.

[0007] As a preferred embodiment of the present invention: a connecting block is fixedly mounted on the mounting frame, a sliding rod is fixedly mounted on the connecting block, and the driving rod is slidably connected to the sliding rod via a sliding block.

[0008] As a preferred embodiment of the present invention: the wire-releasing assembly includes a main driving member and a clamping member, the main driving member includes a first mounting seat fixedly mounted on a mounting frame, a driving wheel is rotatably mounted on the first mounting seat, a motor is fixedly mounted on the outer wall of the mounting frame, and the output shaft of the motor is fixedly connected to the driving wheel; the clamping member includes a slide rail frame fixedly mounted on the first mounting seat, a second mounting seat is slidably mounted on the slide rail frame, a wire pressing wheel is rotatably mounted on the second mounting seat, an adjusting screw is threadedly connected to the slide rail frame, and the adjusting screw is rotatably connected to the top of the second mounting seat.

[0009] As a preferred embodiment of the present invention: a third guide wheel is rotatably mounted on the mounting frame, the driving rod is connected to the counterweight through a second pull rope, and under the action of the third guide wheel, both ends of the second pull rope are vertical at 90°.

[0010] As a preferred embodiment of the present invention: the artificial silk limiting assembly includes a connecting plate, the connecting plate is connected to the driving rod through a tension detection assembly, a mounting head is fixedly mounted on the connecting plate, a first guide wheel and a second guide wheel are rotatably mounted on the mounting head, the first guide wheel is arranged above the second guide wheel, when the artificial silk passes through the first guide wheel and the second guide wheel and is connected to the weaving machine, the artificial silk located in the artificial silk limiting assembly forms an "S" shape.

[0011] As a preferred embodiment of the present invention: the first guide wheel and the second guide wheel are both intermediate reducing rollers which are narrow in the middle and wide at both ends; the first guide wheel and the second guide wheel are provided with air vents connecting the two ends and the recessed parts of the roller body; the first guide wheel and the second guide wheel are both fixedly mounted with fan blades.

[0012] As a preferred embodiment of the present invention: the tension detection assembly includes a head fixedly installed on the end of a driving rod, a T-shaped limit plate is slidably installed in the driving rod, the cross bar of the limit plate passes through the head and is fixedly connected to the connecting plate, the cross bar of the limit plate is slidably connected to the head, and a tension detection sensor is fixedly installed between the vertical plate of the limit plate and the head.

[0013] As a preferred embodiment of the present invention: a fixing plate is fixedly mounted on the mounting frame, the Hall type handle is rotatably mounted on the fixing plate, a torsion spring is fixedly mounted on the bottom of the fixing plate, and the other end of the torsion spring is fixedly connected to the Hall type handle.

[0014] As a preferred embodiment of the present invention: the connecting assembly includes a pneumatic damping telescopic rod, the pneumatic damping telescopic rod is fixedly mounted on the side wall of the driving rod, a first pull rope is fixedly mounted on the Hall type handle, and the output end of the pneumatic damping telescopic rod is fixedly connected to the first pull rope.

[0015] A method for preventing yarn breakage in the weaving of rayon and spun rayon fabrics, comprising the following steps:

[0016] Step 1: Adjust the weight of the counterweight so that it matches the initial tension of the weaving machine. Adjust the distance between the wire pressing wheel and the driving wheel through the adjusting screw rod to adapt to the thickness of the rayon. Pass the rayon through the wire feeding assembly, rayon limiting assembly, and connect it to the weaving machine. At this time, the driving rod is in the initial position under the action of the counterweight, the Hall handle is at the speed reduction limit position, and the wire feeding assembly stops working;

[0017] Step 2: Start the weaving machine. The weaving machine generates a dragging force on the rayon. The rayon pulls the driving rod towards the rayon limiting assembly through the rayon limiting assembly. The driving rod drives the Hall handle to rotate clockwise through the elastic connection assembly. The Hall handle controls the wire feeding assembly to increase the wire feeding speed;

[0018] Step 3: When the rayon breaks, the driving rod quickly moves towards the counterweight under the action of the gravity of the counterweight. The driving rod drives the Hall handle to rotate to the limit position, controlling the wire feeding assembly to immediately stop wire feeding.

[0019] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: Through the linkage of the driving rod, counterweight and Hall handle, the present invention adjusts the wire feeding speed in real time according to the weaving speed, making the wire feeding speed dynamically match the weaving speed, avoiding yarn breakage caused by uneven tension of the rayon, improving the weaving stability. The guide wheel of the rayon limiting assembly adopts an intermediate reduced diameter roller structure, combined with ventilation holes and fan blades. When the rayon drags the driving guide wheel to rotate, air flow is generated to assist the external cooling equipment to dissipate heat from the rayon and the guide wheel, reducing the risk of yarn breakage caused by friction heat generation.

[0020] The following further describes in detail the specific implementation manners of the present invention with reference to the accompanying drawings. Description of the Drawings

[0021] In the drawings:

[0022] Figure 1 is a schematic three-dimensional structure diagram of an anti-yarn-breakage device for the weaving of rayon and spun rayon fabrics proposed by the present invention Figure 1 ;

[0023] Figure 2 is a schematic three-dimensional structure diagram of an anti-yarn-breakage device for the weaving of rayon and spun rayon fabrics proposed by the present invention Figure 2 ;

[0024] Figure 3 is a Figure 2 structural schematic diagram of part A in an anti-yarn-breakage device for the weaving of rayon and spun rayon fabrics proposed by the present invention;

[0025] Figure 4The front view of an anti - broken - yarn device for weaving rayon and spun rayon fabrics proposed by the present invention;

[0026] Figure 5 The structural schematic diagram of the connection component of an anti - broken - yarn device for weaving rayon and spun rayon fabrics proposed by the present invention;

[0027] Figure 6 The structural schematic of the counterweight of an anti - broken - yarn device for weaving rayon and spun rayon fabrics proposed by the present invention Figure 1 ;

[0028] Figure 7 The structural schematic of the counterweight of an anti - broken - yarn device for weaving rayon and spun rayon fabrics proposed by the present invention Figure 2 ;

[0029] Figure 8 Of an anti - broken - yarn device for weaving rayon and spun rayon fabrics proposed by the present invention Figure 7 The structural schematic diagram at position B in

[0030] In the figure: 1. mounting frame; 2. connecting block; 3. driving rod; 4. slider; 5. sliding rod; 6. end head; 7. limiting plate; 8. tension detection sensor; 9. connecting plate; 10. mounting head; 11. first guide wheel; 12. second guide wheel; 13. ventilation hole; 14. fan blade; 15. first mounting seat; 16. driving wheel; 17. motor; 18. slide rail frame; 19. second mounting seat; 20. adjusting lead screw; 21. wire pressing wheel; 22. Hall - type handle; 23. fixing plate; 24. torsion spring; 25. first pulling rope; 26. pneumatic damping telescopic rod; 27. fourth guide wheel; 28. lever; 29. guide slide rail; 30. second pulling rope; 31. third guide wheel; 32. counterweight. Specific embodiments

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but not to limit the scope of the present invention.

[0032] Embodiment: Refer to Figures 1 - 8 , an anti - broken - yarn device for weaving rayon and spun rayon fabrics, includes a mounting frame 1 and a wire - releasing component arranged on the mounting frame 1. It also includes a driving rod 3 slidably arranged on the mounting frame 1. One end of the driving rod 3 is provided with a rayon limiting component, and the rayon passes through the rayon limiting component and is connected to the weaving machine. The other end of the driving rod 3 is provided with a counterweight 32 with adjustable weight. A Hall - type handle 22 is arranged on the mounting frame 1, and the Hall - type handle 22 is in transmission connection with the driving rod 3 through a connection component, and the Hall - type handle 22 controls the wire - releasing speed of the wire - releasing component.

[0033] When the driving rod 3 moves towards the human filament limiting component, the driving rod 3 rotates the driving Hall handle 22 (clockwise), thereby driving the wire pay-off component to increase the wire pay-off speed.

[0034] When the driving rod 3 moves towards the direction of the counterweight 32, the driving rod 3 drives the Hall handle 22 to rotate (counterclockwise), controlling the wire pay-off component to slow down the wire pay-off speed.

[0035] Refer to Figure 2 , a third guide wheel 31 is rotatably installed on the mounting bracket 1, the driving rod 3 is connected to the counterweight 32 through a second pull rope 30, and under the action of the third guide wheel 31, the two ends of the second pull rope 30 are perpendicular at 90°.

[0036] Refer to Figure 2 , the counterweight 32 includes a guide slide rail 29 fixedly installed on the mounting bracket 1 and a counterweight block slidably installed on the guide slide rail 29.

[0037] Refer to Figure 6 , in addition, an adjustable counterweight 32 can be provided. The counterweight 32 includes a lever 28 rotatably arranged on the mounting bracket 1 and a fourth guide wheel 27 rotatably installed on the mounting bracket 1. A counterweight block and the second pull rope 30 are respectively threadedly connected to both ends of the lever 28. The fourth guide wheel 27 is arranged directly below the third guide wheel 31 and lower than the end of the lever 28 connected to the second pull rope 30. During use, by rotating the counterweight block to adjust its position on the lever 28 (changing the length of the force arm), the pulling force on the driving rod 3 can be dynamically adjusted.

[0038] When the human filament breaks, the driving rod 3 drives the Hall handle 22 to rotate to the extreme limit under the gravity drive of the counterweight 32, thereby controlling the wire pay-off component to stop wire pay-off.

[0039] Refer to Figure 2 , a connection block 2 is fixedly installed on the mounting bracket 1, a slide rod 5 is fixedly installed on the connection block 2, and the driving rod 3 is slidably connected to the slide rod 5 through a slider 4 or a roller.

[0040] Refer to Figures 1 - 3 , the wire pay-off component includes a main driving member and a pressing member. The main driving member includes a first mounting seat 15 fixedly installed on the mounting bracket 1. A driving wheel 16 is rotatably installed on the first mounting seat 15. A motor 17 is fixedly installed on the outer wall of the mounting bracket 1, and the output shaft of the motor 17 is fixedly connected to the driving wheel 16.

[0041] The pressing member includes a slide rail frame 18 fixedly installed on the first mounting seat 15. A second mounting seat 19 is slidably installed on the slide rail frame 18. A wire pressing wheel 21 is rotatably installed on the second mounting seat 19. An adjusting screw rod 20 is threadedly connected to the slide rail frame 18, and the adjusting screw rod 20 is rotatably connected to the top of the second mounting seat 19.

[0042] During use, the distance between the bottom of the wire pressing wheel 21 and the top of the driving wheel 16 can be adjusted according to the fineness of the rayon used in weaving, so as to facilitate the feeding of rayon of different finenesses. Specifically:

[0043] Rotate the adjusting screw rod 20. The adjusting screw rod 20 drives the second mounting seat 19 to slide up and down along the track of the slide rail frame 18. First, drive the second mounting seat 19 to rise by rotating the adjusting screw rod 20 to separate the driving wheel 16 from the wire pressing wheel 21. Then pass the rayon through between the driving wheel 16 and the wire pressing wheel 21. Then rotate the adjusting screw rod 20 in the reverse direction to drive the wire pressing wheel 21 to descend and cooperate with the driving wheel 16 to clamp the rayon. Then start the motor 17 to drive the driving wheel 16 to rotate. The driving wheel 16 and the wire pressing wheel 21 cooperate to drive the wire feeding. During the weaving process of the weaving machine, the rayon is dragged, and the rayon limiting component and the counterweight 32 are used to tighten the rayon.

[0044] In addition, the wire pressing wheel 21 can also be driven to lift and lower by an electric driving element such as a cylinder drive.

[0045] Refer to Figure 3 , the rayon limiting component includes a connecting plate 9. The connecting plate 9 is connected to the driving rod 3 through a tensile force detection component. An installation head 10 is fixedly installed on the connecting plate 9. A first guide wheel 11 and a second guide wheel 12 are rotatably installed on the installation head 10. The first guide wheel 11 is arranged above the second guide wheel 12. When the rayon passes through the first guide wheel 11 and the second guide wheel 12 and is connected to the weaving machine, the rayon located in the rayon limiting component forms an "S" shape.

[0046] Both the first guide wheel 11 and the second guide wheel 12 are middle-reduced diameter rollers that are narrow in the middle and wide at both ends. Ventilation holes 13 communicating the two ends and the recessed part of the roller body are provided on the first guide wheel 11 and the second guide wheel 12. Fan blades 14 are fixedly installed on both the first guide wheel 11 and the second guide wheel 12. When the weaving machine drags the rayon, the tensioned rayon drives the first guide wheel 11 and the second guide wheel 12 to rotate. During this process, the fan blades 14 drive the air flow to pass through the ventilation holes 13 and blow towards the recessed parts of the first guide wheel 11 and the second guide wheel 12 and the rayon, assisting the external cooling equipment to cool the rayon, the first guide wheel 11 and the second guide wheel 12, and reducing the heat generated by the transmission of the rayon.

[0047] Refer to Figure 8 , the tensile force detection component includes a sealing head 6 fixedly installed at the end of the driving rod 3. A T-shaped limiting plate 7 is slidably installed in the driving rod 3. The cross bar of the limiting plate 7 passes through the sealing head 6 and is fixedly connected to the connecting plate 9. The cross bar of the limiting plate 7 is slidably connected to the sealing head 6. A tensile force detection sensor 8 is fixedly installed between the vertical plate of the limiting plate 7 and the sealing head 6.

[0048] During use, the pulling forces of the counterweight 32 and the weaving machine on the rayon are transmitted to the pulling force detection sensor 8, and the weight of the counterweight 32 is adjusted according to the data of the pulling force detection sensor 8 to balance the pulling force (the driving rod 3 is stably in the initial position X, and at this time, the wire feeding speed is close to the weaving speed).

[0049] Refer to Figure 1 、 Figure 2 、 Figure 5 and Figure 6 Referring to

[0050] Refer to Figure 5 , the connecting component includes a pneumatic damping telescopic rod 26. The pneumatic damping telescopic rod 26 is fixedly installed on the side wall of the driving rod 3. A first pulling rope 25 is fixedly installed on the Hall handle 22. The output end of the pneumatic damping telescopic rod 26 is fixedly connected to the first pulling rope 25. In addition to transmitting the pulling force, the pneumatic damping telescopic rod 26 can buffer the movement impact of the driving rod 3 through its damping characteristics, avoiding mis-triggering of the Hall handle due to instantaneous tension fluctuations.

[0051] During use, first, a section of rayon is released by the wire feeding component, and then the rayon is passed through the rayon limiting component and connected to the weaving machine. Before the weaving machine starts, the counterweight 32 is in the lowest position. At this time, the driving rod 3 drags the Hall handle 22 to rotate to the speed reduction extreme limit position (at this time, the motor 17 stops working), and then the weaving machine is started. When the weaving machine is working, it drags the rayon, and the rayon drags the driving rod 3 to slide through the rayon limiting component. At this time, the counterweight 32 rises, and at the same time, the torsion spring 24 resets. The reset of the torsion spring 24 drives the Hall handle 22 to rotate, thereby controlling the motor 17 to work. When the driving rod 3 moves to the X position, the torsion spring 24 stops the reset action, and the Hall handle 22 stops rotating.

[0052] When the weaving speed increases, the driving rod 3 continues to move towards the rayon limiting component. At this time, the torsion spring 24 continues to reset to accelerate the rotation speed of the motor 17. When the weaving speed decreases, the counterweight 32 drags the driving rod 3 to move, causing the Hall handle 22 to rotate in the reverse direction (the torsion spring 24 is tightened), thereby reducing the wire feeding speed.

[0053] It should be noted that this device is installed inside the chassis during use, and only the rayon passes through the holes at the front and rear ends of the chassis.

[0054] In summary, through the linkage of the driving rod 3, the counterweight 32 and the Hall handle 22, this device can adjust the wire feeding speed in real time according to the weaving speed, making the wire feeding speed dynamically match the weaving speed, avoiding yarn breakage caused by uneven tension of the rayon, and improving the weaving stability.​

[0055] The counterweight 32 is provided with a sliding counterweight block or a lever 28 type adjustable structure (the length of the lever arm is changed by rotating the counterweight block), and the tension can be dynamically adjusted according to the specifications of the rayon and weaving requirements, so as to adapt to different production scenarios and improve the versatility of the device.

[0056] The guide wheel of the rayon limiting assembly adopts an intermediate reduced diameter roller structure, cooperates with the vent hole 13 and the fan blade 14, utilizes the rayon to drag and drive the guide wheel to generate airflow when rotating, and assists the external cooling equipment to dissipate heat from the rayon and the guide wheel, thereby reducing the risk of yarn breakage caused by frictional heat generation.

[0057] The tension detection component monitors the filament tension in real time through sensors, and combines the counterweight adjustment to keep the tension balanced (the driving rod 3 is stabilized in the initial position), thereby achieving precise tension control and improving product quality.

[0058] The connection assembly adopts a pneumatic damping telescopic rod 26, which can not only transmit the pulling force, but also buffer the movement impact of the driving rod 3 through the damping characteristics, avoid the Hall handle from being falsely triggered due to instantaneous tension fluctuations, and enhance the reliability of the device.

[0059] When the human wire breaks, the driving rod 3 moves rapidly under the gravity of the counterweight 32, and controls the Hall handle to turn to the limit position, so that the wire-releasing assembly stops releasing the wire immediately, reducing material waste and downtime, and improving production safety.

[0060] The clamping part of the wire-releasing assembly can flexibly adjust the distance between the wire-pressing wheel 21 and the driving wheel 16 by adjusting the screw rod 20 to adapt to different thicknesses of artificial silk; the "S"-shaped wire threading path of the artificial silk limiting assembly increases friction to ensure stable tension of the artificial silk. The overall structure is easy to operate and has wide applicability.

[0061] A yarn-breaking prevention method for weaving rayon-cotton fabrics comprises the following steps:

[0062] Step 1: Adjust the weight of the counterweight 32 to match the initial tension of the weaving machine, adjust the distance between the pressing wheel 21 and the driving wheel 16 by adjusting the screw rod 20 to adapt to the thickness of the rayon, pass the rayon through the pay-off assembly and the rayon limit assembly, and connect it to the weaving machine. At this time, the driving rod 3 is in the initial position under the action of the counterweight 32, the Hall handle 22 is in the speed reduction limit position, and the pay-off assembly stops working;

[0063] Step 2: Start the weaving machine, which generates a dragging force on the rayon. The rayon pulls the driving rod 3 to move toward the rayon limiting assembly through the rayon limiting assembly. The driving rod 3 drives the Hall handle 22 to rotate clockwise through the elastic connecting assembly. The Hall handle 22 controls the pay-off assembly to increase the pay-off speed.

[0064] Step 3: When the rayon breaks, the driving rod 3 quickly moves towards the counterweight 32 under the gravity of the counterweight 32. The driving rod 3 drives the Hall handle 22 to rotate to the limit position, and controls the wire feeding assembly to immediately stop wire feeding.

[0065] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can still make some changes or modifications to the equivalent embodiments by using the technical content mentioned above without departing from the technical solution of the present invention. However, as long as it does not depart from the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the present invention.

Claims

1. A device for preventing yarn breakage in the weaving of rayon and spun rayon fabrics, comprising a mounting frame (1) and a yarn unwinding assembly arranged on the mounting frame (1), characterized in that: It further includes a driving rod (3) slidably arranged on the mounting frame (1). One end of the driving rod (3) is provided with a human filament limiting component. The human filament passes through the human filament limiting component and is connected to the weaving machine. The other end of the driving rod (3) is provided with a counterweight (32) with adjustable weight. A Hall handle (22) is arranged on the mounting frame (1). The Hall handle (22) is in transmission connection with the driving rod (3) through a connecting component, and the Hall handle (22) controls the wire releasing speed of the wire releasing component.

2. The anti - broken yarn device for weaving rayon - spun cotton fabric according to claim 1, characterized in that, A connecting block (2) is fixedly installed on the mounting frame (1), and a sliding rod (5) is fixedly installed on the connecting block (2). The driving rod (3) is slidably connected to the sliding rod (5) through a slider (4).

3. The anti - broken yarn device for weaving rayon - spun cotton fabric according to claim 1, characterized in that, The wire releasing component includes a main driving part and a pressing part. The main driving part includes a first mounting seat (15) fixedly installed on the mounting frame (1). A driving wheel (16) is rotatably installed on the first mounting seat (15). A motor (17) is fixedly installed on the outer wall of the mounting frame (1), and the output shaft of the motor (17) is fixedly connected to the driving wheel (16). The pressing part includes a slide rail frame (18) fixedly installed on the first mounting seat (15). A second mounting seat (19) is slidably installed on the slide rail frame (18). A wire pressing wheel (21) is rotatably installed on the second mounting seat (19). An adjusting screw rod (20) is threadedly connected to the slide rail frame (18), and the adjusting screw rod (20) is rotatably connected to the top of the second mounting seat (19).

4. A device for preventing yarn breakage in the weaving of rayon and spun rayon fabrics according to claim 1, characterized in that, A third guide wheel (31) is rotatably installed on the mounting frame (1). The driving rod (3) is connected to the counterweight (32) through a second pull rope (30). Under the action of the third guide wheel (31), the two ends of the second pull rope (30) are perpendicular at 90°.

5. The anti - broken yarn device for weaving rayon and spun rayon fabrics according to claim 1, wherein, The human filament limiting component includes a connecting plate (9). The connecting plate (9) is connected to the driving rod (3) through a tensile force detection component. An installation head (10) is fixedly installed on the connecting plate (9). A first guide wheel (11) and a second guide wheel (12) are rotatably installed on the installation head (10). The first guide wheel (11) is arranged above the second guide wheel (12). When the human filament passes through the first guide wheel (11) and the second guide wheel (12) and is connected to the weaving machine, the human filament located in the human filament limiting component forms an "S" shape.

6. The anti-breaking yarn device for weaving rayon and spun rayon fabrics according to claim 5, characterized in that, Both the first guide wheel (11) and the second guide wheel (12) are middle-reduced diameter rollers that are narrow in the middle and wide at both ends. Ventilation holes (13) communicating the two ends and the recessed part of the roller body are arranged on the first guide wheel (11) and the second guide wheel (12). Fan blades (14) are fixedly installed on both the first guide wheel (11) and the second guide wheel (12).

7. A device for preventing yarn breakage in the weaving of rayon and spun rayon fabrics according to claim 5, characterized in that, The tensile force detection component includes a head (6) fixedly installed at the end of the driving rod (3). A T-shaped limiting plate (7) is slidably installed in the driving rod (3). The cross bar of the limiting plate (7) passes through the head (6) and is fixedly connected to the connecting plate (9). The cross bar of the limiting plate (7) is slidably connected to the head (6). A tensile force detection sensor (8) is fixedly installed between the vertical plate of the limiting plate (7) and the head (6).

8. The anti-breaking yarn device for weaving rayon and spun rayon fabrics according to claim 7, characterized in that, A fixing plate (23) is fixedly installed on the mounting frame (1). The Hall handle (22) is rotatably installed on the fixing plate (23). A torsion spring (24) is fixedly installed at the bottom of the fixing plate (23). The other end of the torsion spring (24) is fixedly connected to the Hall handle (22).

9. The anti - broken yarn device for weaving rayon and spun rayon fabrics according to claim 8, wherein, The connecting component includes a pneumatic damping telescopic rod (26). The pneumatic damping telescopic rod (26) is fixedly installed on the side wall of the driving rod (3). A first pull rope (25) is fixedly installed on the Hall handle (22). The output end of the pneumatic damping telescopic rod (26) is fixedly connected to the first pull rope (25).

10. A method for preventing yarn breakage in the weaving of rayon and spun rayon fabric, using a device for preventing yarn breakage in the weaving of rayon and spun rayon fabric according to any one of claims 1-9, characterized in that, It includes the following steps: Step 1: Adjust the weight of the counterweight (32) to match the initial tensile force of the weaving machine. Adjust the distance between the wire pressing wheel (21) and the driving wheel (16) through the adjusting screw rod (20) to adapt to the thickness of the rayon. Pass the rayon through the wire feeding component and the rayon limiting component and connect it to the weaving machine. At this time, the driving rod (3) is in the initial position under the action of the counterweight (32), the Hall handle (22) is at the speed reduction extreme limit, and the wire feeding component stops working; Step 2: Start the weaving machine. The weaving machine generates a dragging force on the rayon. The rayon pulls the driving rod (3) to move towards the rayon limiting component through the rayon limiting component. The driving rod (3) drives the Hall handle (22) to rotate clockwise through the elastic connection component. The Hall handle (22) controls the wire feeding component to increase the wire feeding speed; Step 3: When the rayon breaks, the driving rod (3) quickly moves towards the counterweight (32) under the gravity of the counterweight (32). The driving rod (3) drives the Hall handle (22) to rotate to the extreme limit, controlling the wire feeding component to immediately stop wire feeding.

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