Low temperature conformal sizing device for nylon filaments

Abstract

The utility model relates to sizing device technical field, concretely for a kind of low-temperature shape-retaining sizing device for polyamide filament, including mounting bracket, rotatingly installed pressure roller on the mounting bracket, rotatingly installed installation roller on the mounting bracket, the sponge sleeve is connected on the installation roller, the driving wheel is connected on the pressure roller, the driven wheel is connected on the installation roller, by adopting the elastic extrusion structure of sponge sleeve and pressure roller cooperation, when low-temperature sizing, it can effectively promote sizing material penetration and keep the morphology of filament bundle, when polyamide filament passes between pressure roller and installation roller of wrapped microporous sponge sleeve, sponge sleeve is tightly wrapped every fiber by pressure deformation, its compression process will sizing solution be forced extruded into fiber gap, when rebound, negative pressure is formed further to pump sizing material into fiber interior, this kind of microscopic pumping action solves the problem that sizing solution is viscous, difficult to penetrate uniformly under low-temperature condition.

Description

Technical Field

[0001] This utility model relates to the technical field of sizing devices, specifically a low-temperature conformal sizing device for nylon filaments. Background Technology

[0002] Nylon filament, as an outstanding representative of synthetic fibers, is widely used in high-end clothing, industrial textiles, and special materials due to its excellent strength, abrasion resistance, and resilience. However, its inherent characteristics, such as strong hydrophobicity, relatively low glass transition temperature, and susceptibility to static electricity, also bring severe challenges to its subsequent weaving processing. The sizing process, as a crucial link between spinning and weaving, has the core mission of constructing a complete, tough, and adhesive sizing film on the fiber surface. This film binds the monofilaments, settles the fibers, and improves weavability, making it an invisible cornerstone that determines the final fabric quality and production efficiency.

[0003] Existing technologies generally rely on hot air drying high-temperature sizing processes, which contradicts the inherent high-temperature intolerance of nylon fibers. High temperatures not only lead to huge energy consumption but also easily cause thermal damage to the fibers, resulting in decreased strength and elongation, yellowing, and affecting the quality of finished products. To avoid the risks of high temperatures, low-temperature sizing technology has become an inevitable choice. However, under low-temperature conditions, the viscosity of the sizing solution increases and its fluidity deteriorates. The simple extrusion method of traditional hard rollers easily seals the sizing material on the surface of the filament bundle, forming a surface coating, and cannot achieve deep and uniform penetration of the sizing material into the fiber interior. This results in inconsistent sheath and core, and is prone to producing fuzz during weaving. Furthermore, the wet filament bundle after sizing has low strength and extremely unstable shape. The sizing film has not yet solidified, and conventional mechanical yarn guiding and transmission mechanisms are prone to scratching the sizing film and cannot effectively prevent the filaments from scattering, sticking, or bundling, resulting in poor shape retention and directly affecting the uniformity of the sizing film. Therefore, we propose a low-temperature shape-preserving sizing device for nylon filaments. Utility Model Content

[0004] To solve the above-mentioned technical problems, this application provides a low-temperature shape-preserving sizing device for nylon filament, including a mounting frame, a pressure roller rotatably mounted on the mounting frame, an mounting roller rotatably mounted on the mounting frame, a sponge sleeve sleeved on the mounting roller, a driving wheel sleeved on the pressure roller, and a driven wheel sleeved on the mounting roller. The driving wheel and the driven wheel are meshed and connected. The mounting roller is located below the pressure roller, and the sponge sleeve is fitted against the surface of the pressure roller.

[0005] In some embodiments, a roller brush is rotatably mounted on the mounting bracket, the roller brush is located below the mounting tube and is in contact with the surface of the sponge sleeve, a scraper brush that is in contact with the roller brush is slidably mounted on the mounting bracket, and a slide rod is fixedly mounted on the mounting bracket.

[0006] In some embodiments, the scraper is located below the roller brush, the scraper is slidably sleeved with the slide rod, and two sets of symmetrically distributed springs are sleeved on the slide rod. The two ends of the two sets of springs are respectively fixedly connected to the scraper and the mounting bracket. A cam is rotatably mounted on the mounting bracket, and a stop block is fixedly mounted on the scraper. The cam and the stop block are fitted together.

[0007] In some embodiments, a mounting base is rotatably mounted on the mounting frame, a first toothed ring is sleeved on the mounting base, a drive wheel is rotatably mounted inside the mounting frame, the drive wheel is meshed with the first toothed ring, and the mounting base is provided with three sets of ring-shaped brackets, each of which is fixedly mounted with an air jet pipe, and all three sets of air jet pipes point towards the central axis of the mounting base.

[0008] In some embodiments, a cover plate is fixedly installed on the mounting base, and the cover plate has three sets of annularly distributed sliding grooves, and the three sets of brackets are slidably connected to the cover plate through the sliding grooves.

[0009] In some embodiments, an adjusting plate is rotatably mounted inside the mounting base, and an annular tooth is fixedly mounted on the adjusting plate. All three sets of brackets are connected to the adjusting plate through the annular tooth. A rack is slidably mounted inside the mounting base, and a cylinder is fixedly mounted inside the mounting base.

[0010] In some embodiments, a second toothed ring is sleeved on the adjusting disc, the rack is meshed with the second toothed ring, and the rack is fixedly connected to the output end of the cylinder piston rod.

[0011] This utility model has at least the following beneficial effects:

[0012] 1. By adopting an elastic extrusion structure that combines a sponge sleeve with a pressure roller, the sizing agent can be effectively promoted to penetrate the fiber bundle and maintain its shape during low-temperature sizing. When the nylon filament passes between the pressure roller and the mounting roller that wraps the microporous sponge sleeve, the sponge sleeve deforms under pressure and tightly wraps each fiber. The compression process forces the sizing agent into the fiber gaps, and the rebound creates a negative pressure to further draw the sizing agent into the fiber interior. This micro-pumping action solves the problem of viscous sizing agent and difficulty in uniform penetration under low-temperature conditions, and avoids the problem of surface sizing agent blockage caused by traditional hard roller extrusion. This allows the sizing agent to be evenly distributed from the surface of the fiber bundle to the interior. At the same time, the elastic wrapping of the sponge can smooth the sizing film on the surface of the fiber bundle, preventing local sizing agent accumulation or blank areas, and laying the foundation for the formation of a complete sizing film in the future.

[0013] 2. The rotating airflow system achieves preliminary solidification and drying of the wet yarn bundle, effectively protecting the incompletely cured sizing film. After the yarn bundle is sized, multiple sets of air jets arranged in a ring rotate around the yarn bundle at a uniform speed, forming a uniform reverse airflow field. On the one hand, these airflows can blow away the moisture on the surface of the yarn bundle, achieving gentle evaporative cooling and initiating the preliminary drying process; on the other hand, the centripetal force generated by the airflow will gently gather the yarn bundle in the center position, preventing individual fibers from spreading, sticking together, or forming tangles in the wet state. This non-contact treatment method replaces the traditional mechanical yarn guiding mechanism, avoiding the risk of scratching the uncured sizing film, while also helping to blow away any excess sizing droplets that may form on the surface of the yarn bundle, making the final sizing film more uniform and complete, improving the sizing quality and weaving performance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram showing the structural separation of the mounting frame and the mounting roller of this utility model;

[0016] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A;

[0017] Figure 4 This is a schematic diagram showing the structural separation of the mounting base and mounting frame of this utility model;

[0018] Figure 5 This is a schematic diagram showing the structural separation of the mounting base and bracket of this utility model.

[0019] In the diagram: 1. Mounting frame; 2. Pressure roller; 3. Mounting roller; 4. Sponge sleeve; 5. Drive wheel; 6. Driven wheel; 7. Scraper; 8. Slide rod; 9. Spring; 10. Stop block; 11. Cam; 12. Mounting seat; 13. First gear ring; 14. Drive wheel; 15. Bracket; 16. Air jet pipe; 17. Adjusting disc; 18. Second gear ring; 19. Rack; 20. Cylinder; 21. Ring tooth; 22. Cover plate; 23. Slide groove; 24. Slider; 25. Roller brush. Detailed Implementation

[0020] 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.

[0021] Example 1: Please refer to Figure 1-5This utility model provides a technical solution: a low-temperature shape-preserving sizing device for nylon filament, comprising a mounting frame 1, a pressure roller 2 rotatably mounted on the mounting frame 1, an mounting roller 3 rotatably mounted on the mounting frame 1, a sponge sleeve 4 sleeved on the mounting roller 3, a driving wheel 5 sleeved on the pressure roller 2, and a driven wheel 6 sleeved on the mounting roller 3. The driving wheel 5 and the driven wheel 6 are meshed together. The mounting roller 3 is located below the pressure roller 2, and the sponge sleeve 4 is fitted against the surface of the pressure roller 2. When the device is working, the pressure roller 2 is driven to rotate by an external power source, and through the meshing of the driving wheel 5 and the driven wheel 6, it synchronously drives the mounting roller 3 and the pressure roller 2. The sponge sleeve 4 rotates in the opposite direction, and the nylon filaments carrying the slurry pass between the pressure roller 2 and the sponge sleeve 4. At this time, the sponge sleeve 4, which has a microporous elastic structure, will deform under the pressure of the pressure roller 2, tightly wrapping and adhering to each filament bundle. This elastic compression can force the slurry into the gaps between the fibers inside the filament bundle, solving the problem of poor slurry fluidity and difficulty in penetration at low temperatures. On the other hand, the rebound of the sponge will generate a slight negative pressure, which helps to further draw in the slurry, achieving deeper and more uniform penetration, while smoothing the slurry film on the surface of the filament bundle, laying the foundation for subsequent processes.

[0022] A roller brush 24 is rotatably mounted on the mounting frame 1. The roller brush 24 is located below the mounting tube and is in contact with the surface of the sponge sleeve 4. A scraper 7 is slidably mounted on the mounting frame 1 and is in contact with the roller brush 24. A slide rod 8 is fixedly mounted on the mounting frame 1. The scraper 7 is located below the roller brush 24 and is slidably sleeved with the slide rod 8. Two sets of symmetrically distributed springs 9 are sleeved on the slide rod 8. The two ends of the two sets of springs 9 are fixedly connected to the scraper 7 and the mounting frame 1, respectively. A cam 11 is rotatably mounted on the mounting frame 1. A stop block 10 is fixedly mounted on the scraper 7 and is in contact with the cam 11 and the stop block 10. After long-term operation, residual slurry or impurities may accumulate in the micropores of the sponge sleeve 4. At this time, the roller brush 24, which is in close contact with the surface of the sponge sleeve 4, rotates to brush out the residue in the pores of the sponge sleeve 4. The scraper 7 is continuously pressed against the surface of the roller brush 24 under the action of the springs 9 to scrape off the dirt brought out from the sponge sleeve 4 and keep the roller brush 24 clean. The continuous rotation of cam 11 periodically pushes stop 10, causing scraper 7 to slide back and forth along slide bar 8 in a small amplitude. This action can prevent the slurry from solidifying locally on scraper 7, and also allow the blade of scraper 7 to wear evenly, thereby maintaining its long-term and stable scraping effect and ensuring the continuous and effective operation of the sponge sleeve 4 cleaning system.

[0023] Example 2: Please refer to Figure 4 , Figure 5A mounting base 12 is rotatably mounted on the mounting frame 1. A first toothed ring 13 is sleeved on the mounting base 12. A drive wheel 14 is rotatably mounted inside the mounting frame 1, and the drive wheel 14 meshes with the first toothed ring 13. The mounting base 12 is provided with three sets of annularly distributed brackets 15. Each of the three sets of brackets 15 is fixedly mounted with an air jet pipe 16. All three sets of air jet pipes 16 point to the central axis of the mounting base 12. A cover plate 22 is fixedly mounted on the mounting base 12. The cover plate 22 has three sets of annularly distributed sliding grooves 23. Three sets of brackets 15 are slidably connected to the cover plate 22 via sliding grooves 23. An adjusting plate 17 is rotatably mounted inside the mounting base 12. A ring gear 21 is fixedly mounted on the adjusting plate 17. All three sets of brackets 15 are connected to the adjusting plate 17 via the ring gear 21. A rack 19 is slidably mounted inside the mounting base 12. A cylinder 20 is fixedly mounted inside the mounting base 12. A second gear ring 18 is sleeved on the adjusting plate 17. The rack 19 is connected to the second gear ring 18. The output end of the piston rod of the cylinder 20 is fixedly mounted on the rack 19. The drive wheel 14, through engagement with the first toothed ring 13, drives the entire mounting base 12 and its three sets of jet pipes 16 to rotate at a constant speed. Compressed air is ejected from the jet pipes 16. Since the jet pipes 16 point to the central axis and rotate with the mounting base 12, a uniform, rotating airflow field is formed around the filament bundle. This rotating airflow can effectively disperse the moisture on the surface of the filament bundle for gentle initial drying. At the same time, the centripetal force generated by the airflow can gently gather the filament bundle in the center, preventing the fibers from spreading or sticking together in a wet state, thus playing a non-contact bundling and shape-preserving role. In addition, when it is necessary to process filament bundles of different specifications, the cylinder 20 can be activated to push the rack 19. The rack 19, through engagement with the second toothed ring 18, drives the adjusting plate 17 to rotate. The annular teeth 21 on the adjusting plate 17 then synchronously drive the three supports 15 to slide radially along the sliding grooves 23 on the cover plate 22, thereby simultaneously adjusting the distance between all the jet pipes 16 and the central filament bundle to change the intensity of the airflow and adapt to different process requirements.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] 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 low-temperature conformal sizing device for nylon filaments, comprising a mounting frame (1), characterized in that: A pressure roller (2) is rotatably mounted on the mounting frame (1), and an installation roller (3) is rotatably mounted on the mounting frame (1). A sponge sleeve (4) is fitted onto the installation roller (3). A drive wheel (5) is fitted onto the pressure roller (2), and a driven wheel (6) is fitted onto the installation roller (3). The drive wheel (5) and the driven wheel (6) are meshed together. The installation roller (3) is located below the pressure roller (2), and the sponge sleeve (4) is fitted to the surface of the pressure roller (2).

2. The low-temperature conformal sizing device for nylon filaments according to claim 1, characterized in that: A roller brush (24) is rotatably mounted on the mounting bracket (1). The roller brush (24) is located below the mounting tube and is in contact with the surface of the sponge sleeve (4). A scraper (7) that is in contact with the roller brush (24) is slidably mounted on the mounting bracket (1). A slide rod (8) is fixedly mounted on the mounting bracket (1).

3. The low-temperature conformal sizing device for nylon filaments according to claim 2, characterized in that: The scraper (7) is located below the roller brush (24). The scraper (7) is slidably sleeved with the slide rod (8). Two sets of symmetrically distributed springs (9) are sleeved on the slide rod (8). The two ends of the two sets of springs (9) are fixedly connected to the scraper (7) and the mounting bracket (1) respectively. A cam (11) is rotatably mounted on the mounting bracket (1). A stop block (10) is fixedly mounted on the scraper (7). The cam (11) and the stop block (10) are fitted together.

4. The low-temperature conformal sizing device for nylon filaments according to claim 1, characterized in that: A mounting base (12) is rotatably mounted on the mounting frame (1). A first toothed ring (13) is sleeved on the mounting base (12). A drive wheel (14) is rotatably mounted inside the mounting frame (1). The drive wheel (14) meshes with the first toothed ring (13). Three sets of ring-shaped brackets (15) are provided on the mounting base (12). Air jet pipes (16) are fixedly mounted on each of the three sets of brackets (15). All three sets of air jet pipes (16) point to the central axis of the mounting base (12).

5. The low-temperature conformal sizing device for nylon filaments according to claim 4, characterized in that: A cover plate (22) is fixedly installed on the mounting base (12). Three sets of annularly distributed sliding grooves (23) are provided on the cover plate (22). The three sets of brackets (15) are slidably connected to the cover plate (22) through the sliding grooves (23).

6. The low-temperature conformal sizing device for nylon filaments according to claim 4, characterized in that: An adjusting plate (17) is rotatably installed inside the mounting base (12). A ring tooth (21) is fixedly installed on the adjusting plate (17). All three sets of brackets (15) are connected to the adjusting plate (17) by meshing through the ring tooth (21). A rack (19) is slidably installed inside the mounting base (12). A cylinder (20) is fixedly installed inside the mounting base (12).

7. The low-temperature conformal sizing device for nylon filaments according to claim 6, characterized in that: The adjusting disc (17) is fitted with a second toothed ring (18), the rack (19) is meshed with the second toothed ring (18), and the rack (19) is fixedly connected to the output end of the piston rod of the cylinder (20).

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