Hair fiber bundle winding anti-wear and anti-thread-clamping tube device

Abstract

This utility model discloses a wear-resistant and anti-entrapment device for fiber bundle winding, comprising a support, a cylindrical body, an upper circular plate assembly, and a lower circular plate assembly. A fixed shaft is vertically mounted on the support. The upper circular plate assembly is located inside the upper port of the cylindrical body, and the lower circular plate assembly is located inside the lower port of the cylindrical body. Both the upper and lower circular plate assemblies have a central hole for the fixed shaft to pass through. The lower surface of the lower circular plate assembly is rotatably connected to the upper surface of the support with a gap. The upper end of the cylindrical body is higher than the upper end of the upper circular plate assembly, and the lower end of the cylindrical body is lower than the gap. The support is located inside the cylindrical body. In this utility model, the outer circumference of the cylindrical body no longer has an annular gap or a pre-reserved gap with the upper surface of the support, thus preventing fiber bundles from getting caught in the annular gap or gap. Whether rotating clockwise or counterclockwise, the various connected components will not loosen, ensuring continuous, safe, and reliable production operation.

Description

Technical Field

[0001] This utility model belongs to the field of hair fiber production technology, specifically relating to a wear-resistant and anti-clamping tube device for winding hair fiber bundles. Background Technology

[0002] Patent CN202320127194.6 discloses a wear-resistant bobbin device for winding fiber bundles, which adopts a split structure of a support, a cylindrical body, an upper circular plate assembly, and a lower circular plate assembly. A fixed shaft is vertically mounted on the support. The upper circular plate assembly is located at the upper end of the cylindrical body, and the lower circular plate assembly is located at the lower end of the cylindrical body. Both the upper and lower circular plate assemblies have central holes through which the fixed shaft passes. An upper annular groove, coaxial with the fixed shaft, is formed on the lower surface of the lower circular plate assembly. A lower annular groove, corresponding vertically to the upper annular groove, is formed on the upper surface of the support. Several ball bearings are arranged between the lower and upper annular grooves. A gap exists between the lower surface of the lower circular plate assembly and the upper surface of the support. This bobbin device has the following problems during use: 1) Due to the gap between the lower surface of the circular plate assembly and the upper surface of the support, the fibers used for production can easily enter this gap and become entangled around the balls, affecting their rolling and preventing the cylinder from rotating. If this happens, and a worker notices it in time, the cylinder, upper circular plate assembly, and lower circular plate assembly need to be removed upwards, the fibers cut, a new bobbin placed on the support, and the fibers from the production line wound onto the new bobbin. If the worker does not notice it in time, the cylinder will not rotate, causing the fibers to fall directly to the ground. Subsequently, the fallen fibers need to be manually wound back onto the cylinder, which is time-consuming and labor-intensive, and the winding is often uneven.

[0003] 2) The lower surface of the upper circular plate is pressed against the upper annular surface of the cylinder to form a circular gap, and the upper surface of the lower circular plate is pressed against the lower annular surface of the cylinder to form a lower circular gap. During the process of winding hair fibers out of the cylinder, when a fiber gets caught in the circular gap, more fibers will get caught in the circular gap. Once this filament entanglement occurs, when unwinding (unwinding) from the cylinder, the fiber caught in the circular gap will have difficulty unwinding smoothly, and the fiber will be broken, thus making the unwound hair fibers waste.

[0004] 3) Since the external threaded cylinder on the bottom surface of the upper circular plate is connected to the inner circular thread at the upper end of the cylindrical body, and the external threaded cylinder on the top surface of the lower circular plate is connected to the inner circular thread at the lower end of the cylindrical body, when the yarn is wound onto the cylinder tube, the cylindrical body will rotate clockwise under the drive of the fiber bundle, and the circular plate and the end face of the cylindrical body will remain in a pressed state; when unwinding from the cylinder tube, the cylindrical body and the cylinder will rotate counterclockwise. At this time, there is a tendency for loosening between the ball and the upper annular groove of the lower circular plate, between the circular plate and the end face of the cylindrical body, and between the bushing and the internal threaded cylinder. This causes the annular gap between the circular plate and the end face of the cylindrical body to gradually increase, and even the external threaded cylinder may detach from the cylindrical body and the bushing may detach from the internal threaded cylinder, resulting in the interruption of the unwinding operation, which in turn affects the operation of the entire production line. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model provides a wear-resistant and anti-stretching tube device for fiber bundle winding, which eliminates the annular gap on the outer circle of the cylindrical body, eliminates the gap between the support and the lower circular plate assembly, and maintains a good pressing state between the circular plate and the cylindrical body during the winding and unwinding process.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a wear-resistant and anti-clamping tube device for fiber bundle winding, comprising a support, a cylindrical body, an upper circular plate assembly, and a lower circular plate assembly. A fixed shaft is vertically provided on the support. The upper circular plate assembly is located inside the upper port of the cylindrical body, and the lower circular plate assembly is located inside the lower port of the cylindrical body. A central hole for the fixed shaft to pass through is opened in the center of both the upper and lower circular plate assemblies. An upper annular groove with the same center line as the fixed shaft is opened on the lower surface of the lower circular plate assembly. A lower annular groove corresponding to the upper annular groove is opened on the upper surface of the support. A plurality of balls are provided between the lower annular groove and the upper annular groove. There is a gap between the lower surface of the lower circular plate assembly and the upper surface of the support. The upper end of the cylindrical body is higher than the upper end of the upper circular plate assembly, and the lower end of the cylindrical body is lower than the gap. The support is located inside the cylindrical body.

[0007] The inner circles of the upper and lower ports of the cylindrical body are provided with internal threads. The upper and lower circular plate assemblies have the same structure and are arranged symmetrically. The upper circular plate assembly includes a circular plate, a pressure plate, a bushing, an external threaded cylinder, an internal threaded cylinder, and a support ring. The outer diameters of the circular plate and the cylindrical body are equal, and the outer diameters of the circular plate, the external threaded cylinder, and the cylindrical body are equal. The circular plate is located inside the cylindrical body. The central hole is opened at the center of the circular plate and the pressure plate. The upper ends of the external threaded cylinder and the internal threaded cylinder are fixedly connected to the lower surface of the circular plate. The outer circles of the pressure plate and the external threaded cylinder are threadedly connected to the upper port of the cylindrical body. The bottom surface of the pressure plate is in contact with and pressed against the top surface of the circular plate. The inner diameter of the internal threaded cylinder is equal to and corresponds to the inner diameter of the central hole. The support ring is fixedly located at the lower port of the internal threaded cylinder. The inner diameter of the support ring is smaller than the inner diameter of the internal threaded cylinder. The outer circle of the bushing extends into and is threadedly connected to the internal threaded cylinder. The lower end of the bushing is pressed against the support ring. The upper end of the bushing is flush with the upper surface of the circular plate. The inner diameter of the bushing is smaller than the inner diameter of the support ring. The inner wall of the cylinder is provided with a limiting structure. The lower annular surface of the external threaded cylinder of the upper circular plate assembly is pressed against the upper end of the limiting structure, and the upper annular surface of the external threaded cylinder of the lower circular plate assembly is pressed against the lower end of the limiting structure. The upper annular groove is formed on the lower surface of the pressure plate of the lower circular plate assembly.

[0008] The limiting structure includes an upper limiting ring fixedly disposed on the upper part of the cylindrical body and a lower limiting ring fixedly disposed on the lower part of the cylindrical body. The lower annular surface of the external threaded cylinder of the upper circular plate assembly is pressed against the upper annular surface of the upper limiting ring, and the upper annular surface of the external threaded cylinder of the lower circular plate assembly is pressed against the lower annular surface of the lower limiting ring.

[0009] The limiting structure is a limiting cylinder coaxially installed inside the cylindrical body. The outer diameter of the limiting cylinder is equal to the inner diameter of the cylindrical body. The lower annular surface of the external threaded cylinder of the upper circular plate assembly is pressed against the upper annular surface of the limiting cylinder. The upper annular surface of the external threaded cylinder of the lower circular plate assembly is pressed against the lower annular surface of the limiting cylinder.

[0010] The inner diameter of the center hole of the pressure plate is larger than the inner diameter of the bushing and smaller than the outer diameter of the bushing. The pressure plate has two centrally symmetrical rotary drive holes, and the circular plate has two centrally symmetrical insertion holes. The diameter of the rotary drive hole is equal to the diameter of the insertion hole, and the distance from the center of the rotary drive hole to the center line of the cylindrical body is equal to the distance from the center of the insertion hole to the center line of the cylindrical body.

[0011] The bushing is made of polytetrafluoroethylene. The inner circle of the bushing is a smooth surface. Two blind holes are opened on the upper end of the bushing, and the two blind holes are symmetrical about the center line of the bushing. The circular plate, externally threaded cylinder, internally threaded cylinder, and support ring are integrated into a single structure; the outer circumference of the cylinder has a rough surface. The support has a through threaded hole at both ends. The bottom surface of the support has a countersunk groove with a diameter larger than the threaded hole at the lower end of the threaded hole. The lower end of the fixed shaft extends into and is threaded into the threaded hole. The lower end of the fixed shaft is threaded with a fastening nut located in the countersunk groove. The upper end of the fastening nut is pressed against the bottom of the countersunk groove. The outer circle of the middle part of the fixed shaft has two planes for the wrench to hold and drive the fixed shaft to rotate.

[0012] Compared with the prior art, the present invention has the following advantages by adopting the above technical solution: (1) The lower end of the cylindrical body is lower than the gap between the lower surface of the lower circular plate assembly and the upper surface of the support. The support is located inside the cylindrical body. This not only blocks and hides the gap, but also prevents the fiber bundle from entering the gap when the hair fiber bundle is wound around the outer circle of the cylindrical body. It also increases the length of the cylindrical body and increases the length of the hair fiber. The external threaded cylinder and the circular plate are both set inside the cylindrical body. There is no longer an annular gap on the outer circle of the cylindrical body. This prevents the fiber from getting caught in the annular gap, thus preventing the fiber from being pulled off during unwinding.

[0013] (2) The external threaded cylinder is threaded inside the cylinder. The inner end of the external threaded cylinder is pressed against the limiting structure. At the same time, the upper surface of the upper circular plate is pressed against the upper pressure plate, and the lower surface of the lower circular plate is pressed against the lower pressure plate. The upper and lower pressure plates are threadedly connected to the upper and lower ports of the cylinder, respectively. This ensures that the cylinder, circular plate and internal threaded cylinder are fixedly connected as one unit. When subjected to torque opposite to the direction of rotation of the internal circular thread of the cylinder, there will be basically no loosening.

[0014] (3) The inner diameter of the center hole of the pressure plate is larger than the inner diameter of the bushing and smaller than the outer diameter of the bushing. This structure allows the pressure plate to restrict the axial position of the bushing, thereby ensuring that the bushing remains stable inside the internal threaded cylinder.

[0015] (4) Two types of limiting structures are adopted. One type consists of an upper limiting ring and a lower limiting ring fixedly connected to the inner circle of the cylinder. The lower end of the upper external threaded cylinder is pressed against the upper limiting ring, and the upper end of the lower external threaded cylinder is pressed against the lower limiting ring. The other type uses a limiting cylinder coaxially located inside the cylinder. The upper and lower external threaded cylinders are pressed against the upper and lower ends of the limiting cylinder, respectively. Both of these limiting structures can achieve axial limiting of the external threaded cylinder.

[0016] In summary, this utility model adopts a modular manufacturing process, which not only facilitates assembly, provides high wear resistance and long service life, but also enhances the stability of fiber winding. After wear, the bushing can be easily replaced. The outer circumference of the cylindrical body no longer has annular gaps or pre-reserved gaps with the upper surface of the support, thus preventing the fiber filaments from getting entangled in the annular gaps and gaps. At the same time, whether rotating clockwise or counterclockwise, the various modular components will not become loose, ensuring continuous, safe and reliable production. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention; Figure 2 yes Figure 1Top view; Figure 3 yes Figure 1 Top view of the middle circular plate; Figure 4 This is a schematic diagram of the structure of the first special-purpose wrench used for installing and removing bushings; Figure 5 This is a structural diagram of a second special-purpose wrench used for installing and removing round plates and pressure plates; Figure 6 This is a structural schematic diagram of Embodiment 2 of this utility model. Detailed Implementation

[0018] Example 1: As Figures 1-3 As shown, the wear-resistant and anti-clamping bobbin device for hair fiber bundle winding of this utility model includes a support 11, a cylindrical body 1, an upper circular plate assembly, and a lower circular plate assembly. A fixed shaft 12 is vertically provided on the support 11. The upper circular plate assembly is located inside the upper port of the cylindrical body 1, and the lower circular plate assembly is located inside the lower port of the cylindrical body 1. A central hole for the fixed shaft 12 to pass through is opened in the center of both the upper and lower circular plate assemblies. An upper annular groove with the same center line as the fixed shaft 12 is opened on the lower surface of the lower circular plate assembly. A lower annular groove corresponding to the upper annular groove is opened on the upper surface of the support 11. A plurality of ball bearings 10 are provided between the lower annular groove and the upper annular groove. A gap 21 is provided between the lower surface of the lower circular plate assembly and the upper surface of the support 11. The upper end of the cylindrical body 1 is higher than the upper end of the upper circular plate assembly, and the lower end of the cylindrical body 1 is lower than the gap 21. The support 11 is located inside the cylindrical body 1.

[0019] The inner circles of the upper and lower ports of the cylindrical body 1 are provided with internal threads. The upper and lower circular plate assemblies have the same structure and are arranged symmetrically. The upper circular plate assembly includes a circular plate 2, a pressure plate 9, a bushing 3, an externally threaded cylinder 4, an internally threaded cylinder 5, and a support ring 6. The outer diameters of the circular plate 2 and the cylindrical body 1 are equal, and the outer diameters of the circular plate 2, the externally threaded cylinder 4, and the inner diameter of the cylindrical body 1 are equal. The circular plate 2 is located inside the cylindrical body 1. The central hole is opened at the center of the circular plate 2 and the pressure plate 9. The upper ends of the externally threaded cylinder 4 and the internally threaded cylinder 5 are fixedly connected to the lower surface of the circular plate 2. The outer diameters of the pressure plate 9 and the externally threaded cylinder 4 are both threaded. The threaded connection is inside the upper port of the cylindrical body 1. The bottom surface of the pressure plate 9 is attached to and pressed against the top surface of the circular plate 2. The inner diameter of the internal threaded cylinder 5 is equal to that of the central hole and corresponds vertically. The support ring 6 is fixedly installed at the lower port of the internal threaded cylinder 5. The inner diameter of the support ring 6 is smaller than that of the internal threaded cylinder 5. The outer circle of the bushing 3 extends into and is threadedly connected to the internal threaded cylinder 5. The lower end of the bushing 3 is pressed against the support ring 6. The upper end of the bushing 3 is flush with the upper surface of the circular plate 2. The inner diameter of the bushing 3 is smaller than that of the support ring 6. The inner wall of the cylindrical body 1 is provided with a limiting structure. The lower end of the annular surface of the external threaded cylinder 4 of the upper circular plate 2 assembly is pressed against the upper end of the limiting structure, and the upper end of the annular surface of the external threaded cylinder 4 of the lower circular plate 2 assembly is pressed against the lower end of the limiting structure. The upper annular groove is opened on the lower surface of the pressure plate 9 of the lower circular plate 2 assembly.

[0020] The limiting structure includes an upper limit ring 7 fixedly disposed on the upper part of the cylindrical body 1 and a lower limit ring 8 fixedly disposed on the lower part of the cylindrical body 1. The lower end annular surface of the external threaded cylinder 4 of the upper circular plate 2 assembly is pressed against the upper end annular surface of the upper limit ring 7, and the upper end annular surface of the external threaded cylinder 4 of the lower circular plate 2 assembly is pressed against the lower end annular surface of the lower limit ring 8.

[0021] The inner diameter of the center hole of the pressure plate 9 is greater than the inner diameter of the bushing 3 and less than the outer diameter of the bushing 3. The pressure plate 9 has two centrally symmetrical rotary drive holes 13, and the circular plate 2 has two centrally symmetrical insertion holes 15. The diameter of the rotary drive hole 13 is equal to the diameter of the insertion hole 15. The distance from the center of the rotary drive hole 13 to the center line of the cylindrical body 1 is equal to the distance from the center of the insertion hole 15 to the center line of the cylindrical body 1.

[0022] The bushing 3 is made of polytetrafluoroethylene. The inner circle of the bushing 3 is a smooth surface. Two blind holes 14 are opened on the upper end of the bushing 3, and the two blind holes 14 are symmetrical about the center line of the bushing 3. The circular plate 2, the externally threaded cylinder 4, the internally threaded cylinder 5, and the support ring 6 are integrated into one structure; the outer circle of the cylindrical body 1 has a rough surface; The support 11 has a threaded hole 22 that is open at both the top and bottom. The bottom surface of the support 11 has a countersunk groove 23 with a diameter larger than that of the threaded hole 22 at the lower end of the threaded hole 22. The lower end of the fixed shaft 12 extends into and is threaded into the threaded hole 22. The lower end of the fixed shaft 12 is threadedly connected to a fastening nut 24 located in the countersunk groove 23. The upper end of the fastening nut 24 is pressed against the bottom of the countersunk groove 23. The outer circle of the middle part of the fixed shaft 12 is provided with two planes 25 for the wrench to clamp and drive the fixed shaft 12 to rotate.

[0023] The lower end of the cylindrical body 1 is lower than the gap 21 between the lower surface of the lower circular plate 2 assembly and the upper surface of the support 11. The support 11 is located inside the cylindrical body 1. This not only blocks and hides the gap 21, but also prevents the fiber bundle from entering the gap 21 when winding the hair fiber bundle around the outer circle of the cylindrical body 1. It also increases the length of the cylindrical body 1 and increases the length of the winding hair fiber. The external threaded cylinder 4 and the circular plate 2 are both set inside the cylindrical body 1. There is no longer an annular gap on the outer circle of the cylindrical body 1. This prevents the fiber from getting caught in the annular gap, thus preventing the fiber from being pulled off during unwinding.

[0024] The external threaded cylinder 4 is threaded inside the cylindrical body 1. The inner end of the external threaded cylinder 4 is pressed against the limiting structure. At the same time, the upper surface of the upper circular plate 2 is pressed against the upper pressure plate 9, and the lower surface of the lower circular plate 2 is pressed against the lower pressure plate 9. The upper and lower pressure plates 9 are threadedly connected to the upper and lower ports of the cylindrical body 1, respectively. This ensures that the cylindrical body 1, circular plate 2, and internal threaded cylinder 5 are fixedly connected as a whole. Even when subjected to a torque opposite to the direction of the internal thread of the cylindrical body 1, there will be virtually no loosening.

[0025] The inner diameter of the center hole of the pressure plate 9 is larger than the inner diameter of the bushing 3 and smaller than the outer diameter of the bushing 3. This structure allows the pressure plate 9 to restrict the axial position of the bushing 3, thereby ensuring that the bushing 3 remains stable inside the internal threaded cylinder 5.

[0026] When the fiber bundle is wound or unwound around the outer circumference of the cylindrical body 1, the fiber bundle pulls the cylindrical body 1. Due to the lower annular groove provided on the upper surface of the support 11, and the presence of several balls 10 in the lower annular groove, the sliding rotational friction between the lower pressure plate 9 and the support 11 is transformed into rolling friction, thereby reducing the pulling force of the fiber bundle and also reducing the wear of the support 11 and the pressure plate 9.

[0027] The fixed shaft 12 is threaded into the threaded hole 22 of the support 11 and is secured by the fastening nut 24. This prevents the fixed shaft 12 from rotating when it slides and rubs against the bushing 3. When the fixed shaft 12 wears out, it needs to be replaced. First, unscrew the fastening nut 24, then use a wrench to hold the two planes 25 in the middle of the fixed shaft 12 and drive the fixed shaft 12 to rotate, removing the fixed shaft 12 from the threaded hole 22 in the support 11. Then, screw the new fixed shaft 12 into the threaded hole 22 and finally install the fastening nut 24.

[0028] The fixed shaft 12 slides and rubs against the inner circle of the bushing 33. Because the bushing 33 is made of wear-resistant polytetrafluoroethylene, it is not easily worn and has a long service life. When the inner circle of the bushing 33 is worn, and the entire tube wobbles during rotation, it indicates that the bushing 33 is severely worn. At this time, the bushing 33 should be replaced.

[0029] When installing or removing bushing 33, use the first special wrench, such as Figure 4 As shown, the first special-purpose wrench includes a first handle rod 17 and two first force-applying rods 18. The two first force-applying rods 18 are vertically fixed to the first handle rod 17, are parallel, and the distance between the two first force-applying rods 18 is equal to the distance between the two blind holes 14. The two first force-applying rods 18 are inserted into the corresponding blind holes 14. By rotating the first handle rod 17, the bushing 33 can be screwed into or out of the internal threaded cylinder 55. The two force-applying rods of the first special-purpose wrench are located in the middle of the first handle rod 17, which facilitates one-handed application of force.

[0030] When it is necessary to install or remove the circular plate 22, use the second special wrench, such as Figure 5 As shown, the second special-purpose wrench includes a second handle rod 19 and two second force-applying rods 20. The two second force-applying rods 20 are vertically fixed to the second handle rod 19, are parallel, and the distance between the two second force-applying rods 20 is equal to the distance between the two insertion holes 15. The two second force-applying rods 20 are inserted into the corresponding insertion holes 15. Rotating the second handle rod 19 drives the bushing 33 to screw in or out of the external threaded cylinder 44. The two force-applying rods of the second special-purpose wrench are located at one end of the second handle rod 19 and are F-shaped.

[0031] The diameter of the rotary drive hole 13 is equal to the diameter of the insertion hole 15, and the distance from the center of the rotary drive hole 13 to the center line of the cylindrical body 11 is equal to the distance from the center of the insertion hole 15 to the center line of the cylindrical body 11. This allows the use of a second special wrench to remove or install the two pressure plates 9.

[0032] The outer circle of the cylindrical body 1 is made into a rough surface, which increases the friction with the limiting fiber bundle when the fiber bundle is wound, making it less likely to slide down.

[0033] When the bobbin actively rotates and winds the fiber bundle, the two rotation drive holes 13 on the pressure plate 9 can be used to insert drive rods, and the power unit drives the bobbin to rotate through the drive rods.

[0034] Example 2: Figure 6 As shown, the difference between this embodiment and embodiment one is that the limiting structure is a limiting cylinder 16 coaxially disposed inside the cylindrical body 1. The outer diameter of the limiting cylinder 16 is equal to the inner diameter of the cylindrical body 11. The lower end annular surface of the external threaded cylinder 4 of the upper circular plate 2 assembly is pressed against the upper end annular surface of the limiting cylinder 16, and the upper end annular surface of the external threaded cylinder 44 of the lower circular plate 2 assembly is pressed against the lower end annular surface of the limiting cylinder 16.

[0035] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A wear-resistant and anti-clamping bobbin device for fiber bundle winding, comprising a support, a cylindrical body, an upper circular plate assembly, and a lower circular plate assembly. A fixed shaft is vertically mounted on the support. The upper circular plate assembly is located inside the upper port of the cylindrical body, and the lower circular plate assembly is located inside the lower port of the cylindrical body. Both the upper and lower circular plate assemblies have a central hole for the fixed shaft to pass through. The lower surface of the lower circular plate assembly has an upper annular groove aligned with the fixed shaft. The upper surface of the support has a lower annular groove corresponding to the upper annular groove. A plurality of ball bearings are disposed between the lower and upper annular grooves. A gap exists between the lower surface of the lower circular plate assembly and the upper surface of the support. The device is characterized by: The upper end of the cylindrical body is higher than the upper end of the upper circular plate assembly, the lower end of the cylindrical body is lower than the aforementioned gap, and the support is located inside the cylindrical body.

2. The anti-wear and anti-thread-clamping bobbin device for hair fiber bundle winding according to claim 1, characterized in that: The inner circles of the upper and lower ports of the cylindrical body are provided with internal threads. The upper and lower circular plate assemblies have the same structure and are arranged symmetrically. The upper circular plate assembly includes a circular plate, a pressure plate, a bushing, an external threaded cylinder, an internal threaded cylinder, and a support ring. The outer diameters of the circular plate and the cylindrical body are equal, and the outer diameters of the circular plate, the external threaded cylinder, and the cylindrical body are equal. The circular plate is located inside the cylindrical body. The central hole is opened at the center of the circular plate and the pressure plate. The upper ends of the external threaded cylinder and the internal threaded cylinder are fixedly connected to the lower surface of the circular plate. The outer circles of the pressure plate and the external threaded cylinder are threadedly connected to the upper port of the cylindrical body. The bottom surface of the pressure plate is in contact with and pressed against the top surface of the circular plate. The inner diameter of the internal threaded cylinder is equal to and corresponds to the inner diameter of the central hole. The support ring is fixedly located at the lower port of the internal threaded cylinder. The inner diameter of the support ring is smaller than the inner diameter of the internal threaded cylinder. The outer circle of the bushing extends into and is threadedly connected to the internal threaded cylinder. The lower end of the bushing is pressed against the support ring. The upper end of the bushing is flush with the upper surface of the circular plate. The inner diameter of the bushing is smaller than the inner diameter of the support ring. The inner wall of the cylinder is provided with a limiting structure. The lower annular surface of the external threaded cylinder of the upper circular plate assembly is pressed against the upper end of the limiting structure, and the upper annular surface of the external threaded cylinder of the lower circular plate assembly is pressed against the lower end of the limiting structure. The upper annular groove is formed on the lower surface of the pressure plate of the lower circular plate assembly.

3. The anti-wear and anti-thread-clamping bobbin device for hair fiber bundle winding according to claim 2, characterized in that: The limiting structure includes an upper limiting ring fixedly disposed on the upper part of the cylindrical body and a lower limiting ring fixedly disposed on the lower part of the cylindrical body. The lower annular surface of the external threaded cylinder of the upper circular plate assembly is pressed against the upper annular surface of the upper limiting ring, and the upper annular surface of the external threaded cylinder of the lower circular plate assembly is pressed against the lower annular surface of the lower limiting ring.

4. The anti-wear and anti-thread-clamping bobbin device for hair fiber bundle winding according to claim 2, characterized in that: The limiting structure is a limiting cylinder coaxially installed inside the cylindrical body. The outer diameter of the limiting cylinder is equal to the inner diameter of the cylindrical body. The lower annular surface of the external threaded cylinder of the upper circular plate assembly is pressed against the upper annular surface of the limiting cylinder. The upper annular surface of the external threaded cylinder of the lower circular plate assembly is pressed against the lower annular surface of the limiting cylinder.

5. The anti-wear and anti-thread-clamping bobbin device for hair fiber bundle winding according to claim 2, characterized in that: The inner diameter of the center hole of the pressure plate is larger than the inner diameter of the bushing and smaller than the outer diameter of the bushing. The pressure plate has two centrally symmetrical rotary drive holes, and the circular plate has two centrally symmetrical insertion holes. The diameter of the rotary drive hole is equal to the diameter of the insertion hole, and the distance from the center of the rotary drive hole to the center line of the cylindrical body is equal to the distance from the center of the insertion hole to the center line of the cylindrical body.

6. The anti-wear and anti-thread-clamping bobbin device for hair fiber bundle winding according to claim 2, characterized in that: The bushing is made of polytetrafluoroethylene. The inner circle of the bushing is a smooth surface. Two blind holes are opened on the upper end of the bushing, and the two blind holes are symmetrical about the center line of the bushing. The circular plate, externally threaded cylinder, internally threaded cylinder, and support ring are integrated into a single structure; the outer circumference of the cylinder has a rough surface. The support has a through threaded hole at both ends. The bottom surface of the support has a countersunk groove with a diameter larger than the threaded hole at the lower end of the threaded hole. The lower end of the fixed shaft extends into and is threaded into the threaded hole. The lower end of the fixed shaft is threaded with a fastening nut located in the countersunk groove. The upper end of the fastening nut is pressed against the bottom of the countersunk groove. The outer circle of the middle part of the fixed shaft has two planes for the wrench to hold and drive the fixed shaft to rotate.

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