UHMWPE fiber on-line empty wrapping twisting device

Abstract

The utility model discloses a UHMWPE fiber on-line air wrapping and twisting device which comprises a compressed air network device and an on-line twisting device, the compressed air network device comprises a base and a network device assembly unit which is arranged on the base and used for enabling entering compressed air to form vortex, and the on-line twisting device comprises an annular air false twisting device unit. The annular air false twisting device unit comprises an annular cavity part and a moving part movably arranged in a first inner cavity of the annular cavity part, a yarn guiding device is arranged on the moving part, the first inner cavity is an annular cavity, and compressed air is introduced into the first inner cavity. According to the UHMWPE fiber on-line empty wrapping and twisting device, yarn can be wrapped and twisted in a network mode in the production process through compressed air, the cohesion and the overall strength of the yarn are improved, and the yarn quality and the production efficiency can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of fiber processing technology. Specifically, this utility model relates to an online empty-bag twisting device for UHMWPE fibers. Background Technology

[0002] In the production of UHMWPE (Ultra High Molecular Weight Polyethylene Fiber), fiber strength, abrasion resistance, and processability are key factors affecting product quality and production efficiency. Traditional fiber processing methods have many shortcomings in terms of yarn cohesion and filament handling, making it difficult to improve product quality and resulting in complex and costly subsequent processing steps. This is especially true for fine denier fibers, which have even stricter performance requirements; problems such as filament breakage and monofilament breakage severely impact product quality and production efficiency.

[0003] UHMWPE fiber is produced using gel spinning technology. In the pre-spinning stage, UHMWPE powder is mixed and dissolved with a solvent, extruded through a spinneret, and rapidly cooled in a low-temperature water bath to form gel filaments. After 72 hours of settling and equilibration to remove excess oil, the fibers undergo multiple extraction processes and long-distance, high-stretching before being wound into shape. Due to variations in raw materials, long-distance stretching, and friction, the UHMWPE fibers produced by this process inevitably suffer from fuzzing, monofilament breakage, and other physical damage, especially noticeable in fine denier fibers. Therefore, subsequent processing is often required, involving rewinding and reprocessing the yarn using twisting and empty-bundle machines to improve cohesion and yarn quality. This process is not only cumbersome but also significantly increases production costs and wastes resources.

[0004] For example, Chinese Patent Application No. 202320377366.5 discloses a mixing device for aerogel spinning, including a mixing container, a sealing cover above the mixing container, a feeding component on the sealing cover, and further including: a crushing component connected inside the feeding component; a filtering component connected inside the feeding component; and a mixing component connected to the sealing cover.

[0005] The aim is to provide an online empty-bag twisting device for UHMWPE fibers. Utility Model Content

[0006] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention provides an online empty-wrap twisting device for UHMWPE fibers, with the purpose of improving yarn quality and increasing production efficiency.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an online air-packing twisting device for UHMWPE fibers, comprising an air-compressed network device and an online twisting device. The air-compressed network device includes a base and a network component unit disposed on the base for forming a vortex of the incoming compressed air. The online twisting device includes an annular air false twisting device unit, which includes an annular cavity and a movable moving part disposed in the first inner cavity of the annular cavity. A guide wire device is disposed on the moving part. The first inner cavity is an annular cavity, and compressed air is introduced into the first inner cavity.

[0008] The base is provided with a first compressed air hole and a second compressed air hole that are connected to each other. The second compressed air hole is connected to the network component unit, and the first compressed air hole is connected to a compressed air source.

[0009] Both the first and second compressed air holes are provided in multiples, and each second compressed air hole is connected to one of the networker component units.

[0010] The networker component unit is fixedly mounted on the base by bolts.

[0011] The guide wire devices are evenly installed on both sides above the base, and the guide wire devices are pig tail type guide wire devices.

[0012] At least one annular air false twist device unit is provided.

[0013] The moving part has a spherical structure, and the guide wire device is a dog tail guide wire device.

[0014] The annular cavity component has a first air inlet and a second air inlet at each end, which are connected to a compressed air source. The first air inlet and the second air inlet are connected to the first inner cavity.

[0015] A linear loop slide rail is provided in the first inner cavity, and the moving component is sleeved on the linear loop slide rail. The linear loop slide rail is a circular ring structure that is coaxially arranged with the first inner cavity.

[0016] The annular air false twist device unit also includes a housing, and the annular cavity is disposed on the housing.

[0017] This utility model relates to an online air-wrapping and twisting device for UHMWPE fibers, which can perform network wrapping and twisting of yarns in compressed air during production, thereby improving yarn cohesion and overall strength, and thus improving yarn quality and production efficiency. Attached Figure Description

[0018] This manual includes the following figures, which illustrate the following:

[0019] Figure 1This is a front view of the UHMWPE fiber online empty-bag twisting device of Embodiment 1;

[0020] Figure 2 This is a front view of the compressed air network device structure;

[0021] Figure 3 This is a left view of the compressed air network device structure;

[0022] Figure 4 This is a top view of the compressed air network device structure;

[0023] Figure 5 This is a top-down perspective view of a ring-shaped air false twist device unit;

[0024] Figure 6 This is a left sectional view of a ring-shaped air false twist device unit;

[0025] Figure 7 This is a cross-sectional view of the annular cavity;

[0026] Figure 8 This is a schematic diagram of the third support wire guide frame;

[0027] Figure 9 This is a front view of the UHMWPE fiber online empty-bag twisting device of Example 2;

[0028] The components in the diagram are labeled as follows: 1. First support wire guide frame; 2. Second support wire guide frame; 3. Third support wire guide frame; 4. Base; 5. Annular cavity component; 6. Moving component; 7. Wire guide device; 8. First air inlet; 9. Second air inlet; 10. Wire loop type slide rail; 11. Housing; 12. First compressed air hole; 13. Second compressed air hole; 14. Pressure roller; 15. Compressed air network device; 16. Online twisting device; 17. Winding device; 18. Screw hole; 19. Air inlet fixing platform; 20. Networker assembly unit; 21. Metal rod; 22. Annular slit; 23. Slit. Detailed Implementation

[0029] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of this utility model, and to facilitate its implementation.

[0030] It should be noted that in the following embodiments, the terms "first," "second," and "third" do not represent an absolute distinction in structure and / or function, nor do they represent the order of execution; they are merely for the convenience of description.

[0031] Example 1

[0032] like Figures 1 to 7As shown, this embodiment provides an online empty-wrapping twisting device for UHMWPE fibers, including a first support guide frame 1, a second support guide frame 2, a third support guide frame 3, a compressed air network device 15, and an online twisting device 16. The first support guide frame 1, the second support guide frame 2, and the third support guide frame 3 are arranged sequentially between the pressure roller 14 and the winding device 17. The compressed air network device 15 is disposed on the second support guide frame 2, and the online twisting device 16 is disposed on the third support guide frame 3. The first support guide frame 1 guides the yarn out from the pressure roller 14, passes through the online empty-wrapping twisting device, and is then wound up by the winding device 17.

[0033] Specifically, the first support guide frame 1, the second support guide frame 2, and the third support guide frame 3 are metal frame structures. The first support guide frame 1 is equipped with guide devices 7, such as guide hooks, guides, and guide wheels, to ensure that the yarn is kept on the same horizontal line when it is being twisted in an empty package.

[0034] like Figures 2 to 4 As shown, the compressed air network device 15 includes a base 4 and a networker component unit 20 disposed on the base 4 for forming a vortex in the incoming compressed air. The base 4 has a first compressed air hole 12 and a second compressed air hole 13 connected to each other. The second compressed air hole 13 is connected to the networker component unit 20, and the first compressed air hole 12 is connected to a compressed air source. By introducing the compressed air network device 15, a regular network winding structure is formed in the yarn during production through network entanglement processing. When the air networker unit in the compressed air network device 15 is connected to a stable compressed air, a regular high-pressure air vortex is formed in the guide yarn cavity, which plays a network-encapsulating role on the passing loose yarn. The yarn bundles, individual filaments, and any loose, flyaway, or broken filaments are processed into a whole. Simultaneously, the presence of the vortex provides a certain degree of twisting to the yarn. The network encapsulation and the presence of the vortex make the yarn bundle structure compact, eliminating many adverse effects such as looseness, flyaways, and breaks.

[0035] like Figures 2 to 4As shown, the base 4 is a rectangular closed structure, and is fixed to the upper end of the second support wire guide frame 2 by bolts. Multiple first compressed air holes 12 and second compressed air holes 13 are provided, each second compressed air hole 13 communicating with a networker component unit 20. The first compressed air holes 12 are located on the side of the base 4, arranged sequentially and equidistantly along the length of the base 4, each first compressed air hole 12 communicating with a second compressed air hole 13. The second compressed air holes 13 are located on the top surface of the base 4, directly connected to the air inlet of the networker component unit 20, providing compressed air to the networker component. The networker component unit 20 is fixedly mounted on the base 4 by bolts, and screw holes are provided on both sides of the second compressed air holes 13 on the top surface of the base 4 for fixing the networker component unit 20. The first compressed air holes 12 and 13 are connected to compressed air hoses via quick connectors, and the first compressed air holes 12 are connected to an external compressed air source via quick connectors and compressed air hoses. Networker component unit 20 uses an existing empty networker component. After connecting to a compressed air source, it can form a vortex inside the networker cavity. The air inlet of the networker component is equipped with a sealing gasket to ensure airtightness.

[0036] like Figures 2 to 4 As shown, guide yarn devices 7 are evenly installed on both sides above the base 4. The height of the guide yarn devices 7 is the same as the height of the guide yarn devices 7 installed on the first support guide yarn frame 1. The guide yarn devices 7 are dogtail type guide yarns, used to fix the two ends of the yarn and maintain the stability of the yarn. The networker assembly unit 20 is located between the two guide yarn devices 7, and the yarn passes through the networker cavity of the networker assembly unit 20 and the two guide yarn devices 7.

[0037] like Figures 5 to 7 As shown, the online twisting device 16 includes an annular air false twist device unit, and at least one annular air false twist device unit is provided. The annular air false twist device unit includes an annular cavity 5 and a movable moving member 6 disposed in the first inner cavity of the annular cavity 5. A yarn guide device 7 is provided on the moving member 6. The first inner cavity is an annular cavity, and compressed air is introduced into the first inner cavity. The yarn guide device 7 is located in the second inner cavity of the annular cavity 5. The second inner cavity is a circular cavity disposed at the center of the annular cavity 5, and the yarn enters the second inner cavity.

[0038] like Figures 5 to 7As shown, the moving part 6 has a spherical structure and is a small ball made of lightweight material. The guide device 7 on the moving part 6 is a pig-tail type guide, and its height is the same as that of the guide device 7 installed on the first support guide frame 1, ensuring that the yarn remains on the same horizontal line when the yarn is twisted in an empty package. The moving part 6 is the moving unit of the device, and it drives the guide device 7 to move synchronously. The moving part 6 has a central opening, a slit in the middle of the upper hemisphere, and a pig-tail type guide at the bottom of the lower hemisphere. The material is ceramic or other lightweight, wear-resistant, and smooth material. The slit 23 on the moving part 6 extends radially from the outer surface of the moving part 6 to the central opening of the moving part 6.

[0039] like Figures 5 to 6 As shown, the annular cavity is made of lightweight ceramic. The annular cavity component 5 has a first air inlet 8 and a second air inlet 9 at its two ends, respectively connected to a compressed air source. The first air inlet 8 and the second air inlet 9 communicate with the first inner cavity. The included angle between the first air inlet 8 and the second air inlet 9 is approximately 180 degrees. The first air inlet 8 and the second air inlet 9 guide the compressed air into the first inner cavity, with the air intake direction being counterclockwise. A linear ring-shaped slide rail 10 is installed in the first inner cavity. The moving component 6 is fitted onto the linear ring-shaped slide rail 10. The linear ring-shaped slide rail 10 is a circular structure coaxially arranged with the first inner cavity. The material of the linear ring-shaped slide rail 10 is ceramic, and the linear ring-shaped slide rail 10 passes through the central hole of the moving component 6. The linear ring-shaped slide rail 10 is fixedly connected to the annular cavity via a metal rod 21. The size of the metal rod 21 should be smaller than the width of the slit 23 provided on the moving component 6 so that the moving component 6 can smoothly pass through the metal rod 21 during movement along the linear ring-shaped slide rail 10.

[0040] like Figures 5 to 6 As shown, a horizontal annular slit 22 is formed at the center of the bottom of the inner wall of the annular cavity. The annular slit 22 extends along the entire circumference of the annular cavity. The size of the annular slit 22 is preferably such that the pigtail-shaped wire guide can just pass through it. After passing through the annular slit 22, the pigtail-shaped wire guide is inserted into the second inner cavity. The annular air false twist device unit also includes a housing 11, on which the annular cavity component 5 is disposed. An air inlet is provided on the housing 11, and two symmetrical screw holes are formed on one side of the air inlet. The housing 11 is fixedly mounted on the third support wire guide frame 3 by bolts. The housing 11 is made of aging-resistant plastic.

[0041] like Figure 8 As shown, the third support wire guide 3 has several holes drilled sequentially from low to high on its side rods for fixing the horizontal plate. The horizontal plate is connected to the annular air false twist device unit via metal rod 21 and fixed with bolts. Multiple annular air false twist device units are provided.

[0042] By introducing the online twisting device 16, the yarn is guided through the guide device 7 connected to the moving part 6 during production. When the annular air false twist unit in this device is connected to high-pressure air, due to the presence of the air inlets at both ends and the slits in the inner wall of the annular cavity, the high-pressure air entering the device applies a strong pushing force to the moving part 6 in the first inner cavity. The aerodynamics drives the moving part 6 to perform high-speed circumferential movement on the annular slide rail 10. By adjusting the compressed air flow rate, the rotation speed is adjusted, and the yarn that has passed through the empty package is twisted again, which helps to form a stable twist. This makes the yarn more uniform and stable during twisting and bundling, greatly improving the yarn cohesion and overall strength. It also makes it less likely for relative slippage to occur between individual yarns, improving wear resistance and appearance.

[0043] Example 2

[0044] like Figure 9 As shown, the main difference between the online empty wrapping twisting device for UHMWPE fibers provided in this embodiment and that in Embodiment 1 is the different setting position of the online twisting device 16. In this embodiment, the online twisting device 16 is set on the winding device 17, and the online twisting device 16 is located above the winding roller of the winding device 17. The yarn is twisted and then wound into shape.

[0045] The beneficial effects that this utility model can achieve are:

[0046] 1. Improve yarn quality;

[0047] Enhanced cohesion and strength: The compressed air network device 15 uses compressed air to make the UHMWPE yarn bundle form an irregular network and achieve a certain twist; combined with the online empty-wrapped false twist device, the yarn after empty wrapping is twisted to form a false twist structure, which greatly improves the yarn cohesion and overall strength, and makes it less likely for relative slippage to occur between individual yarns, and significantly improves abrasion resistance.

[0048] Reduce adverse effects such as looseness, fuzz, breakage, and flyaways: It can make broken monofilaments and fuzzy and flyaways in production entangle and twist together, effectively reducing or eliminating the adverse effects of fuzzy fibers in production, reducing the impact of yarn unevenness caused by internal broken monofilaments and other factors on the overall yarn, optimizing the yarn structure and improving its appearance.

[0049] 2. Optimize production processes;

[0050] Simplified downstream processes: The empty package twisting is completed directly during the fiber production process, eliminating the need for subsequent rewinding and reprocessing with twisting and empty package machines as required by traditional processes. This facilitates downstream processing, reduces the number of downstream processing steps, and shortens the production cycle.

[0051] Improved production efficiency and reduced costs: Especially for fine denier yarns, it avoids cumbersome post-processing procedures, thereby improving production efficiency, reducing production costs, saving resources, and enhancing economic benefits.

[0052] 3. The structural design is reasonable and flexible;

[0053] Stable yarn guide: The three supporting yarn guide frames are metal frame structures, and the yarn guide devices 7 are installed at the same height to ensure that the yarn remains on the same horizontal line when it is loosely twisted, thus ensuring the stability of the yarn during processing and improving processing quality;

[0054] Multiple installation methods: The annular air false twister of the online twisting device 16 has two installation methods and is not limited to the position and method described in the patent. It can adapt to different production equipment layouts and needs, improving the applicability and flexibility of the device.

[0055] Easy to implement: The networker component unit 20 of the compressed air network device 15 uses existing air package networker components, and the twisting device is simple; the connection method of each component is clear, and the compressed air holes are connected to the compressed air pipes through quick connectors, which facilitates the assembly and maintenance of the device.

[0056] In summary, this device optimizes the production process, simplifies subsequent procedures, improves production efficiency, reduces costs, and offers diverse installation options, a reasonable structural design, and ease of assembly and maintenance.

[0057] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. An on-line empty package twisting device for UHMWPE fibers, characterized in that: The application relates to a device for twisting yarns, comprising a compressed air network device and an in-line twisting device, wherein the compressed air network device comprises a base and a network component unit arranged on the base and used for forming vortexes of the incoming compressed air, and the in-line twisting device comprises a ring-shaped air false-twist device unit, the ring-shaped air false-twist device unit comprising a ring-shaped cavity unit and a movable moving unit arranged in a first inner cavity of the ring-shaped cavity unit, a guide unit being arranged on the moving unit, and the first inner cavity being a circular ring-shaped cavity, and compressed air being introduced into the first inner cavity.

2. The UHMWPE fiber on-line air pocket twisting device according to claim 1, characterized in that: First compressed air holes and second compressed air holes are arranged on the base in communication, the second compressed air holes are communicated with the network component unit, and the first compressed air holes are connected with a compressed air source.

3. The UHMWPE fiber on-line air pocket twisting device according to claim 2, characterized in that: A plurality of first compressed air holes and second compressed air holes are arranged, and each second compressed air hole is communicated with one network component unit.

4. The UHMWPE fiber on-line air pocket twisting device according to any one of claims 1 to 3, characterized in that: The network component unit is fixedly installed on the base by means of bolts.

5. The UHMW PE fiber on-line air pocket twisting device according to any one of claims 1 to 3, characterized in that: Dog-tail type guide units are uniformly arranged on the upper sides of the base.

6. The UHMW PE fiber on-line air pocket twisting device according to any one of claims 1 to 3, characterized in that: The ring-shaped air false-twist device unit is arranged at least once.

7. The UHMW PE fiber on-line air pocket twisting device according to any one of claims 1 to 3, characterized in that: The moving unit is in a spherical structure, and the guide unit is in a pig-tail type.

8. The UHMWPE fiber on-line air pocket twisting device according to any one of claims 1 to 3, characterized in that: First air inlets and second air inlets are arranged at the two ends of the ring-shaped cavity unit and connected with a compressed air source, and the first air inlets and the second air inlets are communicated with the first inner cavity.

9. The UHMW PE fiber on-line air pocket twisting device according to any one of claims 1 to 3, characterized in that: A wire ring type sliding rail is arranged in the first inner cavity, the moving unit is sleeved on the wire ring type sliding rail, and the wire ring type sliding rail is in a circular ring-shaped structure coaxially arranged with the first inner cavity.

10. The UHMW PE fiber on-line air pocket twisting device according to any one of claims 1 to 3, characterized in that: The ring-shaped air false-twist device unit further comprises a shell, and the ring-shaped cavity unit is arranged on the shell.

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