A vertical twist yarn unwinder tension control device

Abstract

The utility model relates to carbon fiber production technical field, concretely is a vertical type twist silk machine tension control device, including support frame, mounting hole, universal wheel, guide assembly, automatic regulation raw silk in the silk -laying process because silk -laying speed is not uniform leads to the phenomenon that the tow tension is uneven, prevent raw silk to fall off and cause the abrasion, fracture of carbon wire, change raw silk running direction, reduce the included angle between tow follow -up bunching process and split silk comb, reduce the friction, the utility model will increase the labor quantity of low staff because of the follow -up processing of broken wire, has guaranteed the stability of production operation, through installing a vertical type twist silk machine tension control device on carbon silk creel, the tension of raw silk in the silk -laying process is adjusted, changes tow running direction, makes raw silk steady operation in the directional pulley, does not fall off, reduces the friction, reaches the purpose that production operation is stable.

Description

Technical Field

[0001] This utility model relates to the field of carbon fiber production technology, specifically a tension control device for a vertical twisting and unwinding machine. Background Technology

[0002] As is well known, the current method of unwinding raw yarn involves the raw yarn moving forward under the drive of the No. 1 drafting roller. The raw yarn wound on the raw yarn bobbin is passively unwound through the guide ring led out from the pressure cap. The raw yarn passes through the fixed pulley at the upper end of the yarn frame and travels along a predetermined route. In order to reduce the friction between the raw yarn and the fixed pulley, the pulley is connected by bearings. Because the raw yarn is unwound under the drive of the No. 1 roller, the unwinding speed of the raw yarn from the raw yarn bobbin is uneven. The unwinding speed at the upper and lower ends is slow, while the unwinding speed in the middle is fast. This results in uneven tension and vibration when the raw yarn passes through the fixed pulley on the yarn frame.

[0003] Because the raw yarn runs at an uneven speed when it is released from the raw yarn spool, the raw yarn vibrates and is prone to falling off the directional pulley on the yarn guide frame. If it falls into the gap between the directional pulley and the fixed pulley, it will cause surface wear and eventually lead to the breakage of the raw yarn. If the raw yarn falls off directly and trips other raw yarn release machines, it will cause a large number of raw yarns to break, affecting the stability of production operation. Utility Model Content

[0004] In order to overcome the problem of uneven operating speed of existing tension control devices for vertical twisting and unwinding machines, this utility model provides a tension control device for vertical twisting and unwinding machines.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tension control device for a vertical twisting and unwinding machine, comprising: Support frame; Mounting holes are provided around the support frame; A caster wheel, wherein the caster wheel is fixedly installed within the mounting hole; and A guide assembly is mounted on the support frame. The guide assembly includes a mounting frame, which is fixedly mounted on the top of one of the casters. A first connecting rod is fixedly mounted on the mounting frame, and a first guide wheel is rotatably mounted on the first connecting rod. A fixing post is fixedly mounted on the top of the caster on the other side, and a second connecting rod is attached to the top of the fixing post. A second guide wheel is rotatably mounted on the top of the second connecting rod.

[0006] Preferably, the first connecting rod is provided with a fixing bolt by means of threads.

[0007] Furthermore, a protective cover is fixedly installed at the bottom of the fixed column, and the protective cover covers both sides of the second connecting rod. A first bearing is fixedly installed on one side of the protective cover, and one end of the tension controller is connected to the first bearing by a key. The other end of the tension controller is rotatably connected to the second connecting rod.

[0008] Furthermore, a limiter is fixedly installed inside the protective cover, and the limiter is in contact with the second connecting rod.

[0009] In a further embodiment, a second bearing is fixedly installed inside the protective cover, and the second bearing is rotatably connected to the second connecting rod.

[0010] Based on the aforementioned scheme, the tension controller includes a sleeve and a moving rod, the sleeve being rotatably configured with respect to the protective cover, and the moving rod being rotatably configured with respect to the second connecting rod.

[0011] Furthermore, based on the aforementioned scheme, one end of a spring is fixedly disposed on the top of the sleeve, and the other end of the spring is fixedly disposed on the top of the moving rod, with the spring sleeved on the moving rod.

[0012] Furthermore, based on the aforementioned solution, the protective cover is made of steel and is three-dimensional fan-shaped. Beneficial effects

[0013] This vertical twisting and unwinding machine tension control device automatically adjusts the uneven tension of the yarn bundle caused by uneven unwinding speed during the unwinding process, preventing the yarn from falling off and causing wear and breakage of the carbon fiber. It changes the direction of the yarn's movement, reduces the angle between the yarn bundle and the splitting comb during the subsequent bundling process, and reduces friction. This utility model reduces the workload of employees due to the subsequent handling of broken yarns, and ensures the stability of production operation. By installing a vertical twisting machine tension control device on the carbon fiber yarn frame, the tension of the yarn during the unwinding process is adjusted, the direction of the yarn bundle's movement is changed, and the yarn runs stably in the directional pulley, preventing it from falling off, reducing friction, and achieving the goal of stable production operation. Attached Figure Description

[0014] Figure 1 This is a side view of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the fixing bolt of this utility model; Figure 3 This is a schematic diagram of the structure of the guide component of this utility model; Figure 4 This is a schematic diagram of the tension controller of this utility model; Figure 5 This is a schematic diagram of the limiter of this utility model.

[0015] In the diagram: 1. Support frame; 2. Mounting hole; 3. Caster wheel; 4. Guide assembly; 5. Mounting bracket; 6. First connecting rod; 7. First guide wheel; 8. Fixed column; 9. Second connecting rod; 10. Second guide wheel; 11. Fixing bolt; 12. Protective cover; 13. First bearing; 14. Limiter; 15. Second bearing; 16. Sleeve; 17. Moving rod; 18. Spring; 19. Tension controller. Detailed Implementation

[0016] 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.

[0017] See Figures 1-5 A tension control device for a vertical twisting and unwinding yarn machine is disclosed. A support frame 1 serves as the basic load-bearing structure of the device. Mounting holes 2 are opened around the perimeter to fix casters 3. A guide assembly 4 is assembled on the top. The guide assembly 4 is equipped with a first guide wheel 7 and a second guide wheel 10 respectively through a first connecting rod 6 and a second connecting rod 9. A tension controller 19 and a limiter 14 are installed inside the protective cover 12 at the bottom of the fixed column 8. The tension controller 19 automatically adjusts the tension of the raw yarn through a spring structure 18. The raw yarn changes its running direction by being guided by the guide wheels. The tension controller 19 adjusts the tension in real time according to the changes in the unwinding speed to prevent the raw yarn from shaking and falling off. The limiter 14 limits the swing amplitude of the connecting rod. The protective cover 12 protects the internal components. Through the cooperation of guiding, tension self-adaptation and limit protection, the various components solve the problems of uneven unwinding speed and easy raw yarn falling off and breaking in traditional devices, realize stable unwinding of raw yarn, reduce friction and yarn breakage risk, and ensure the stability of production operation.

[0018] First, refer to Figure 1 In this embodiment, the support frame 1 is a frame structure with strong overall rigidity. The mounting holes 2 are evenly opened around the perimeter to provide precise mounting positions for the casters 3, ensuring that the casters 3 are symmetrically distributed and stably supported. The top of the support frame 1 is flat, providing a horizontal mounting reference for the mounting frame 5 and fixing column 8 of the guide assembly 4, avoiding deviation of the guide wheel position due to installation tilt, which would affect the running trajectory of the raw yarn.

[0019] The caster wheel 3 is fixed in the mounting hole 2 of the support frame 1. It not only supports the weight of the entire device, but also rotates flexibly, making it convenient for operators to adjust the position of the device on the twisting and feeding machine to adapt to different feeding route requirements. The caster wheel 3 rotates smoothly without jamming. Even during the device adjustment process, it can keep the support frame 1 stable and avoid the guide wheel from shifting due to shaking. This lays the foundation for the stable guidance and tension control of the raw yarn.

[0020] Then, refer to Figure 3 In this embodiment, the guide assembly 4 is installed on the top of the support frame 1 and is responsible for guiding the direction of the raw yarn, changing the raw yarn feeding path, and reducing friction in the subsequent bundling process. It includes a mounting frame 5, a first connecting rod 6, a first guide wheel 7, a fixed column 8, a second connecting rod 9, and a second guide wheel 10. The mounting frame 5 is fixed on the top of the universal wheel 3 on one side and is vertically distributed. The first connecting rod 6 is fixed on the top. The first guide wheel 7 is rotatably mounted on the first connecting rod 6. The first guide wheel 7 is connected to the connecting rod through a bearing and rotates flexibly. When the raw yarn passes around the first guide wheel 7, the guide wheel rotates synchronously with the raw yarn, converting sliding friction into rolling friction and reducing wear on the surface of the raw yarn. The first connecting rod 6 is provided with a fixing bolt 11, which can adjust the installation angle and height of the first guide wheel 7 to adapt to different feeding height and direction requirements, ensuring that the raw yarn can smoothly pass around the guide wheel without jamming or pulling.

[0021] The fixed post 8 is fixed to the top of the universal wheel 3 on the other side, and the top of the post is attached to the second connecting rod 9. The top of the second connecting rod 9 is rotatably set with the second guide wheel 10. The second guide wheel 10 cooperates with the first guide wheel 7 to form a guide channel for the raw yarn, change the running direction of the raw yarn, reduce the angle between the yarn bundle and the splitting comb, and further reduce friction. The fitting design of the second connecting rod 9 and the fixed post 8 ensures the stability of the connecting rod installation, while reserving the activity space for subsequent tension adjustment, allowing the second guide wheel 10 to swing slightly with the tension change, so as to achieve tension self-adaptation.

[0022] Secondly, see Figure 4 In this embodiment, the tension controller 19 is installed inside the protective cover 12 and is the key to solving the problems of uneven yarn tension and vibration-induced shedding. It automatically adapts to changes in yarn feeding speed through an elastic structure and adjusts the yarn tension in real time. It includes a sleeve 16, a moving rod 17, and a spring 18. The sleeve 16 is rotatably connected to the protective cover 12. One end of the moving rod 17 is slidably engaged with the sleeve 16, and the other end is rotatably connected to the second connecting rod 9. The moving rod 17 can extend and retract along the axial direction of the sleeve 16. When the yarn tension changes, the second connecting rod 9 drives the moving rod 17 to move inside the sleeve 16, triggering the deformation of the spring 18 and generating a reverse force, thereby adjusting the yarn tension. When the yarn tension is too high, the moving rod 17 compresses the spring 18, and the spring 18 rebounds to release the tension. When the yarn tension is too low, the spring 18 extends and pushes the moving rod 17 to increase the yarn tension and achieve dynamic tension balance.

[0023] Spring 18 is sleeved on moving rod 17, with one end fixed to the top of sleeve 16 and the other end fixed to the top of moving rod 17. The elastic coefficient of spring 18 has been optimized so that it can accurately respond to changes in the yarn feeding speed. When the yarn feeding speed is fast (middle section), the tension increases, and spring 18 is compressed to absorb the excess tension, preventing the yarn from being pulled apart. When the yarn feeding speed is slow (upper and lower ends), the tension decreases, and spring 18 extends to supplement the tension, preventing the yarn from loosening, shaking, and falling off, ensuring uniform tension of the yarn throughout the entire process and stable operation.

[0024] Again, see Figure 2 In this embodiment, the protective cover 12 is fixed to the bottom of the fixed column 8 and is three-dimensionally fan-shaped. It covers both sides of the second connecting rod 9 and the tension controller 19, which not only protects the internal components from external dust and debris, but also prevents the raw yarn from accidentally getting tangled or falling off and colliding with the tension controller 19 and the connecting rod, thus avoiding damage to the components and the expansion of the raw yarn breakage. The fan-shaped structure of the protective cover 12 is adapted to the swing trajectory of the second connecting rod 9 and will not hinder the movement of the connecting rod. At the same time, it provides space for the inspection and maintenance of the internal components, which is convenient for maintenance.

[0025] The limiter 14 is fixed inside the protective cover 12 and fits against the second connecting rod 9. It is responsible for limiting the swing amplitude of the second connecting rod 9. When the tension of the raw yarn increases or decreases abnormally, the second connecting rod 9 drives the second guide wheel 10 to swing. The limiter 14 can promptly block the excessive swing of the connecting rod, prevent the spring 18 from failing due to excessive deformation, and prevent the raw yarn from falling off the guide wheel due to excessive swing amplitude. This further ensures the stable operation of the raw yarn. The position of the limiter 14 is preset according to the running trajectory of the raw yarn, which can not only meet the activity requirements of tension adjustment, but also provide reliable safety limit.

[0026] Finally, see Figure 5 In this embodiment, a first bearing 13 and a second bearing 15 are fixedly installed inside the protective cover 12. The first bearing 13 is connected to the sleeve 16 of the tension controller 19, and the second bearing 15 is connected to the second connecting rod 9. The bearings reduce friction when the components rotate, making the sleeve 16 and the second connecting rod 9 of the tension controller 19 rotate more smoothly without jamming, ensuring rapid tension adjustment response and stable operation of the raw wire. The bearings are installed precisely and fit tightly with the corresponding components, avoiding shaking caused by gaps, and further improving the stability and reliability of the device operation.

[0027] When using the tension control device of the vertical twisting and unwinding machine, first place the support frame 1 in the preset position of the twisting and unwinding machine, adjust the overall position of the device by using the universal wheel 3, and ensure that the guiding direction of the first guide wheel 7 and the second guide wheel 10 is consistent with the original yarn unwinding route. Tighten the locking structure of the universal wheel 3 to fix the position of the device and prevent displacement during operation. Check whether each component is installed firmly, whether the protective cover 12 is installed in place, and whether the bearing rotates smoothly.

[0028] According to the specifications (thickness, material) of the raw yarn and the yarn feeding requirements, adjust the angle and height of the first guide wheel 7, loosen the fixing bolt 11 on the first connecting rod 6, rotate the first connecting rod 6 to adjust the direction of the guide wheel, and move the connecting rod up and down to adjust the height, ensuring that the raw yarn can naturally pass over the first guide wheel 7 and the second guide wheel 10 without excessive pulling. Check the state of the spring 18 of the tension controller 19 to ensure that the spring 18 can extend and retract flexibly without deformation or jamming. Adjust the position of the limiter 14 to ensure that the swing amplitude of the second connecting rod 9 is within the preset range, so as not to affect the tension adjustment and to effectively limit the movement.

[0029] The raw yarn is drawn out from the raw yarn spool and passes around the first guide roller 7 and the second guide roller 10 according to the preset route, ensuring that the raw yarn is in close contact with the surface of the guide rollers without slippage or deviation. After the raw yarn is threaded, check the raw yarn tension to ensure that the initial tension is appropriate and there is no slack or excessive tightness.

[0030] When the twisting and unwinding machine is started, the raw yarn moves forward under the drive of the drafting rollers. The unwinding speed is slow at the top and bottom and fast in the middle. When the raw yarn reaches the middle section, the unwinding speed is fast and the tension increases. The raw yarn pulls the second guide wheel 10, which drives the second connecting rod 9 to swing. The second connecting rod 9 pushes the moving rod 17 of the tension controller 19 to compress the spring 18. The spring 18 generates a counter-force to counteract the excess tension and prevent the raw yarn from breaking. When the raw yarn reaches the upper or lower end, the yarn feeding speed slows down and the tension decreases. The spring 18 extends and pushes the moving rod 17, causing the second connecting rod 9 and the second guide wheel 10 to swing in opposite directions, increasing the tension of the raw yarn, preventing the raw yarn from loosening and shaking, and avoiding it from falling off the guide wheel.

[0031] During operation, the limiter 14 limits the swing amplitude of the second link 9 in real time. If the tension of the raw yarn is abnormal and the link swings close to the limit position, the limiter 14 will block it in time to prevent the spring 18 from being over-deformed and the raw yarn from falling off. The first guide wheel 7 and the second guide wheel 10 cooperate to change the running direction of the raw yarn, reduce the angle between the yarn bundle and the yarn comb, reduce friction, and protect the surface quality of the raw yarn.

[0032] During the yarn feeding process, the operator observes the running status of the raw yarn in real time, checks whether the raw yarn has any signs of shaking, deviation or wear, observes the working status of the tension controller 19, and ensures that the spring 18 extends and retracts normally, the second guide wheel 10 swings smoothly, and there is no abnormal noise or jamming.

[0033] If the tension of the raw yarn is found to be excessive or insufficient, the position of the first guide wheel 7 or the preload of the spring 18 of the tension controller 19 can be finely adjusted to ensure tension balance. If the raw yarn deviates, the position of the device or the angle of the guide wheel should be adjusted in time to prevent the raw yarn from falling off.

[0034] After the yarn feeding operation is completed, turn off the twisting and feeding machine, disconnect the connection between the raw yarn and the guide wheel, clean the dust and fiber debris on the surface of the guide wheel to avoid affecting subsequent use, check whether the bearing rotates smoothly, if there is any jamming, add lubricating oil, check the condition of spring 18, if the elasticity decreases or the deformation occurs, replace it in time, clean the inside of the protective cover 12 to ensure that there is no debris accumulation in the internal parts, and prepare for the next operation.

[0035] When changing to raw yarn of different thickness and material, loosen the fixing bolt 11 of the first connecting rod 6, adjust the angle and height of the first guide wheel 7 to ensure that the raw yarn can smoothly pass around the guide wheel without excessive friction or pulling. According to the tension requirements of the new raw yarn, adjust the initial position of the second guide wheel 10 to adapt to the new yarn feeding route.

[0036] If the tension requirement of the raw yarn changes after replacement, the spring 18 with the corresponding elastic coefficient can be replaced, or the position of the limiter 14 can be adjusted to ensure that the tension controller 19 can accurately respond to the tension change of the new raw yarn and avoid yarn breakage or detachment caused by uneven tension.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tension control device for a vertical twisting and unwinding machine, characterized in that, include: Support frame (1); mounting holes (2), the mounting holes (2) are opened around the support frame (1); caster wheel (3), the caster wheel (3) is fixedly installed in the mounting hole (2); and guide assembly (4), the guide assembly (4) is installed on the support frame (1), the guide assembly (4) includes a mounting frame (5), the mounting frame (5) is fixedly installed on the top of the caster wheel (3) on one side, a first connecting rod (6) is fixedly installed on the mounting frame (5), a first guide wheel (7) is rotatably installed on the first connecting rod (6), a fixing post (8) is fixedly installed on the top of the caster wheel (3) on the other side, a second connecting rod (9) is attached to the top of the fixing post (8), and a second guide wheel (10) is rotatably installed on the top of the second connecting rod (9).

2. The tension control device for a vertical twisting and unwinding machine according to claim 1, characterized in that, The first connecting rod (6) is provided with a fixing bolt (11) by means of thread.

3. The tension control device for the vertical twisting and unwinding machine according to claim 2, characterized in that, A protective cover (12) is fixedly installed at the bottom of the fixed column (8). The protective cover (12) covers both sides of the second connecting rod (9). A first bearing (13) is fixedly installed on one side of the protective cover (12). One end of the tension controller (19) is connected to the first bearing (13) by a key. The other end of the tension controller (19) is rotatably connected to the second connecting rod (9).

4. The tension control device for the vertical twisting and unwinding machine according to claim 3, characterized in that, A limiter (14) is fixedly installed inside the protective cover (12), and the limiter (14) is in contact with the second connecting rod (9).

5. The tension control device for a vertical twisting and unwinding machine according to claim 4, characterized in that, The protective cover (12) is fixedly provided with a second bearing (15), which is rotatably connected to the second connecting rod (9).

6. The tension control device for a vertical twisting and unwinding machine according to claim 5, characterized in that, The tension controller (19) includes a sleeve (16) and a moving rod (17). The sleeve (16) is rotatably connected to the protective cover (12), and the moving rod (17) is rotatably connected to the second connecting rod (9).

7. The tension control device for a vertical twisting and unwinding machine according to claim 6, characterized in that, One end of a spring (18) is fixedly disposed on the top of the sleeve (16), and the other end of the spring (18) is fixedly disposed on the top of the moving rod (17). The spring (18) is sleeved on the moving rod (17).

8. The tension control device for a vertical twisting and unwinding machine according to claim 7, characterized in that, The protective cover (12) is made of steel and is three-dimensional fan-shaped.

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