Multi-stage stretching device for superfine denier polyester filament yarn

Abstract

The utility model discloses a multi-stage stretching device for superfine denier polyester filaments, and relates to the technical field of textiles and garments. Comprising a mounting base, a stretching mechanism for superfine denier polyester filaments is arranged on the mounting base, and the stretching mechanism comprises a plurality of groups of first stretching shafts arranged on the mounting base, so that the filaments can be stretched in a multi-stage manner; the antiskid protrusions evenly distributed on the outer wall of the first stretching shaft and the outer wall of the second stretching shaft can increase friction force with filaments, it is guaranteed that the filaments do not slip in the stretching process, stretching is smoothly completed, the distance between the first adjusting support and the second adjusting support can be conveniently and rapidly adjusted through the two-way screw, and flexible adjustment of the stretching multiple is achieved. The production requirements of different products are met, the friction force between the stretching shaft and the filaments can be effectively increased through the design of the anti-skid protrusions, it is guaranteed that the filaments can be stably stretched in the stretching process, the stretching effect is improved, and the physical and mechanical properties of the filaments are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of textile and apparel technology, specifically to a multi-stage stretching device for ultra-fine denier polyester filament. Background Technology

[0002] Superfine denier polyester filament, with its unique performance advantages such as soft hand feel, gentle luster, and excellent moisture absorption and breathability, has been widely used in many fields such as high-end apparel fabrics and home textiles, and market demand continues to grow. In the production process of superfine denier polyester filament, the stretching process is a crucial step. Its core purpose is to improve the fiber's orientation and crystallinity, thereby significantly improving the fiber's physical and mechanical properties, enabling the filament to meet the requirements of different application scenarios.

[0003] Reference patent (Publication No.: CN220503331U; Publication Date: 2024-02-20) discloses a stretching device for polyester filament production, relating to the technical field of polyester filament production equipment. It includes: a base plate; an unwinding component on the left side of the base plate; a winding component on the right side of the base plate; a heating component in the middle of the base plate; the heating component includes a mounting arm fixedly mounted on the base plate; a groove on the vertical portion of the mounting arm; a slider slidably connected inside the groove; a pressure roller rotatably connected to the slider; a guide rod fixedly connected to the upper part of the slider; a spring sleeved on the guide rod; and a heating controller at the lower part of the mounting arm. This device applies external force for stretching while simultaneously heating and stretching, resulting in a large stretching length, good stretching effect, and convenient operation.

[0004] Based on the aforementioned patents, some stretching shafts have smooth outer walls, resulting in insufficient friction between them and ultra-fine denier polyester filaments. This makes the filaments prone to slippage during the stretching process, leading to poor stretching performance. Furthermore, in the production process of ultra-fine denier polyester filaments, the multi-stage stretching process is crucial, directly affecting the quality and performance of the product. Through multi-stage stretching, the fiber molecular chains can be arranged in an orderly manner along the axial direction, thereby effectively enhancing the strength of the fiber. However, the adjustment method of the stretching shaft is not flexible and efficient enough, and it is impossible to quickly and accurately adjust the stretching ratio according to the production requirements of different products. Therefore, this utility model provides a multi-stage stretching device for ultra-fine denier polyester filaments. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a multi-stage stretching device for ultra-fine denier polyester filaments, which solves the problem that the adjustment method of the stretching shaft is not flexible and efficient enough, and cannot quickly and accurately adjust the stretching ratio according to the production requirements of different products.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage stretching device for ultra-fine denier polyester filament, comprising a mounting base, wherein a stretching mechanism for ultra-fine denier polyester filament is provided on the mounting base, and the stretching mechanism includes:

[0007] The guide assembly includes a support frame fixed to the upper surface of the mounting base, a mounting housing fixed to the side wall of the support frame, a mounting bracket connected by an elastic component inside the mounting housing, and a guide wheel body inside the mounting bracket.

[0008] The tensioning assembly includes a slide rail bracket located on the right side of the support frame on the upper surface of the mounting base. A first adjusting bracket is slidably connected inside the slide rail bracket. A first tensioning shaft is rotatably connected to the inner wall of the first adjusting bracket. Anti-slip protrusions are evenly distributed on the outer wall of the first tensioning shaft. A second adjusting bracket is located below the first adjusting bracket. A second tensioning shaft is rotatably connected to the inner wall of the second adjusting bracket.

[0009] Preferably, a wire feeding shaft is fixed to the left end of the upper surface of the mounting base, and a wire take-up shaft is provided at the right end of the upper surface of the mounting base.

[0010] Preferably, a support slide rail is fixed to the upper end of the support frame, a slider is slidably connected to the inner wall of the support slide rail, a pressure roller is rotatably connected to the inner wall of the slider, an electric push rod is fixedly fixed through the upper end of the support slide rail, the telescopic end of the electric push rod is fixedly connected to the slider, and a heating roller is provided on the inner side of the support slide rail below the pressure roller.

[0011] Preferably, the elastic component includes a cavity groove opened inside the mounting housing, a pair of shock-absorbing springs fixed at the bottom of the cavity groove, a damping support rod fixed to the bottom of the cavity groove on the inner ring of the shock-absorbing spring, a buffer block fixed at the upper end of the shock-absorbing spring, the buffer block being slidably connected to the mounting housing, and the mounting bracket being located at the upper end of the buffer block.

[0012] Preferably, a pair of guide wheel bodies are provided on the inner side of the mounting bracket, and multiple sets of the pair of guide wheel bodies are evenly distributed along the horizontal direction of the support frame.

[0013] Preferably, a fixing plate is fixed to the side wall of the slide rail bracket, and a pair of positioning rods are fixed to the lower end face of the fixing plate. The first adjusting bracket and the second adjusting bracket are slidably connected to the positioning rods. A bidirectional screw is rotatably connected to the center of the fixing plate, and the first adjusting bracket and the second adjusting bracket are threadedly connected to the bidirectional screw.

[0014] Beneficial effects

[0015] This invention provides a multi-stage stretching device for ultra-fine denier polyester filaments. Compared with the prior art, it has the following advantages:

[0016] Firstly, the first stretching shaft of this utility model is provided with multiple sets on the mounting base to realize multi-stage stretching of the filament. The anti-slip protrusions evenly distributed on the outer wall of the first and second stretching shafts can increase the friction between them and the filament, ensuring that the filament does not slip during the stretching process and the stretching is completed smoothly. The distance between the first and second adjusting brackets can be easily and quickly adjusted by the bidirectional screw, realizing flexible adjustment of the stretching ratio to meet the production requirements of different products. The anti-slip protrusion design can effectively increase the friction between the stretching shaft and the filament, ensuring that the filament can be stably stretched during the stretching process, improving the stretching effect, and significantly improving the physical and mechanical properties of the filament.

[0017] Secondly, after the filament is drawn out from the pay-off shaft, it enters the guide wheel body inside the mounting shell on the side wall of the support frame. When the filament fluctuates during operation, the force is transmitted to the mounting bracket, which then transmits the pressure to the buffer block. The buffer block slides in the cavity groove, compressing the shock-absorbing spring and damping rod, which play a buffering and stabilizing role, absorbing and releasing energy, so that the guide wheel body can smoothly guide the filament and ensure that the filament enters the subsequent process in a stable state. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the first tension shaft structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the main structure of the guide wheel of this utility model;

[0021] Figure 4 This is a schematic diagram of the mounting shell structure of this utility model.

[0022] In the diagram: 1. Mounting base; 2. Support frame; 201. Support slide rail; 202. Slider; 203. Pressure roller; 204. Electric push rod; 205. Heating roller; 3. Mounting housing; 301. Cavity groove; 302. Shock-absorbing spring; 303. Damping support rod; 304. Buffer block; 305. Mounting bracket; 306. Guide wheel body; 4. Pay-off shaft; 401. Take-up shaft; 5. Slide rail bracket; 501. First adjusting bracket; 502. First tension shaft; 503. Anti-slip protrusion; 504. Fixing plate; 505. Positioning rod; 506. Bidirectional screw; 507. Second adjusting bracket; 508. Second tension shaft. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-4 This utility model provides a technical solution: a multi-stage stretching device for ultra-fine denier polyester filament, including a mounting base 1, on which a stretching mechanism for ultra-fine denier polyester filament is provided, the stretching mechanism including:

[0025] The guide assembly includes a support frame 2 fixed to the upper surface of the mounting base 1, a mounting housing 3 fixed to the side wall of the support frame 2, a mounting bracket 305 connected by an elastic component inside the mounting housing 3, and a guide wheel body 306 inside the mounting bracket 305.

[0026] The tensioning assembly includes a slide rail bracket 5 located on the right side of the support frame 2 on the upper surface of the mounting base 1. A first adjusting bracket 501 is slidably connected inside the slide rail bracket 5. A first tensioning shaft 502 is rotatably connected to the inner wall of the first adjusting bracket 501. Anti-slip protrusions 503 are evenly distributed on the outer wall of the first tensioning shaft 502. A second adjusting bracket 507 is located below the first adjusting bracket 501. A second tensioning shaft 508 is rotatably connected to the inner wall of the second adjusting bracket 507.

[0027] In a preferred embodiment, a wire feeding shaft 4 is fixed to the left end of the upper surface of the mounting base 1, and a wire take-up shaft 401 is provided to the right end of the upper surface of the mounting base 1. A support slide rail 201 is fixed to the upper end of the support frame 2. A slider 202 is slidably connected to the inner wall of the support slide rail 201, and a pressure roller 203 is rotatably connected to the inner wall of the slider 202. An electric push rod 204 is fixedly fixed through the upper end of the support slide rail 201. The telescopic end of the electric push rod 204 is fixedly connected to the slider 202. The inner side of the support slide rail 201 is located at the pressure roller 203. A heating roller 205 is installed below the base. The ultra-fine denier polyester filament to be stretched is wound onto the pay-off shaft 4 at the left end of the upper surface of the mounting base 1. The filament is led out from the pay-off shaft 4 and passes between the pressure roller 203 and the heating roller 205 at the upper end of the support frame 2. The telescopic end of the electric push rod 204 pushes the slider 202 to slide in the support slide rail 201, thereby adjusting the gap between the pressure roller 203 and the heating roller 205, applying a certain pressure to the filament, while the heating roller 205 heats the filament to make it reach a suitable stretching temperature.

[0028] In a preferred embodiment, the elastic component includes a cavity groove 301 formed inside the mounting housing 3. A pair of damping springs 302 are fixed to the bottom of the cavity groove 301. A damping support rod 303, which is fixed to the bottom of the cavity groove 301, is provided on the inner ring of the damping spring 302. A buffer block 304 is fixed to the upper end of the damping spring 302. The buffer block 304 is slidably connected to the mounting housing 3. A mounting bracket 305 is located at the upper end of the buffer block 304. A pair of guide wheel bodies 306 are provided inside the mounting bracket 305. The pair of guide wheel bodies 306 are positioned along the water flow of the support frame 2. Multiple sets are evenly distributed in the horizontal direction. After the filament is led out from the pay-off shaft 4, it enters the guide wheel body 306 inside the housing 3 on the side wall of the support frame 2. When the filament fluctuates during operation, the force is transmitted to the mounting bracket 305. The mounting bracket 305 transmits the pressure to the buffer block 304. The buffer block 304 slides in the cavity groove 301 and compresses the shock-absorbing spring 302 at the same time. The damping support rod 303 plays a role in buffering and stabilizing, absorbing and releasing energy, so that the guide wheel body 306 can smoothly guide the filament and ensure that the filament enters the subsequent process in a stable state.

[0029] The design of multiple guide wheel bodies 306 and elastic components ensures the stability of the filament during operation, reduces fluctuations, and ensures uniform force on the filament during subsequent stretching, thereby improving the stretching quality. By adjusting the gap between the pressure roller 203 and the heating roller 205 through the electric push rod 204, the pressure and heating temperature of the filament can be precisely controlled, providing suitable conditions for stretching and further improving product quality.

[0030] In a preferred embodiment, a fixing plate 504 is fixed to the side wall of the slide rail bracket 5, and a pair of positioning rods 505 are fixed to the lower end face of the fixing plate 504. The first adjusting bracket 501 and the second adjusting bracket 507 are slidably connected to the positioning rods 505. A bidirectional screw 506 is rotatably connected to the center of the fixing plate 504, and the first adjusting bracket 501 and the second adjusting bracket 507 are threadedly connected to the bidirectional screw 506. When the bidirectional screw 506 is rotated, since the first adjusting bracket 501 and the second adjusting bracket 507 are threadedly connected to the bidirectional screw 506 and slidably connected to the positioning rods 505, the first adjusting bracket 501 and the second adjusting bracket 507 will slide within the slide rail bracket 5, thereby changing the distance between the first tension shaft 502 and the second tension shaft 508. Changing the distance between the first tension shaft 502 and the second tension shaft 508 achieves different tensioning. The first stretching shaft 502 is provided with multiple sets on the mounting base 1 to realize multi-stage stretching of the filament. The filament passes between the first stretching shaft 502 and the second stretching shaft 508. Different stretching ratios can be achieved by adjusting the distance. The anti-slip protrusions 503 evenly distributed on the outer wall of the first stretching shaft 502 and the second stretching shaft 508 can increase the friction between them and the filament, ensuring that the filament does not slip during the stretching process and the stretching is completed smoothly. The distance between the first adjusting bracket 501 and the second adjusting bracket 507 can be easily and quickly adjusted by the bidirectional screw 506 to realize flexible adjustment of the stretching ratio and meet the production requirements of different products. The design of the anti-slip protrusions 503 can effectively increase the friction between the stretching shaft and the filament, ensuring that the filament can be stably stretched during the stretching process, improving the stretching effect, and significantly improving the physical and mechanical properties of the filament.

[0031] The positioning rod 505 provides guidance for the sliding of the first adjusting bracket 501 and the second adjusting bracket 507.

[0032] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0033] During operation, the ultra-fine denier polyester filament to be stretched is wound onto the pay-off shaft 4 at the left end of the upper surface of the mounting base 1. After the filament is led out from the pay-off shaft 4, it first enters the guide wheel body 306 inside the mounting shell 3 on the side wall of the support frame 2. When the filament fluctuates during operation, the force is transmitted to the mounting bracket 305. The mounting bracket 305 transmits the pressure to the buffer block 304. The buffer block 304 slides in the cavity groove 301 and compresses the shock-absorbing spring 302. The damping support rod 303 plays a buffering and stabilizing role, absorbing and releasing energy, so that the guide wheel body 306 smoothly guides the filament.

[0034] Next, the filament passes between the pressure roller 203 and the heating roller 205 at the upper end of the support frame 2. The telescopic end of the electric push rod 204 pushes the slider 202 to slide within the support slide rail 201, adjusting the gap between the pressure roller 203 and the heating roller 205 to apply a certain pressure to the filament. At the same time, the heating roller 205 heats the filament to reach a suitable stretching temperature. Subsequently, the filament enters the stretching assembly. The bidirectional screw 506 is rotated. Since the first adjusting bracket 501 and the second adjusting bracket 507 are threadedly connected to the bidirectional screw 506 and slidably connected to the positioning rod 505, the first adjusting bracket 501... 01 and the second adjustment bracket 507 slide within the slide rail bracket 5, changing the distance between the first stretching shaft 502 and the second stretching shaft 508 to achieve different stretching ratios. Multiple sets of first stretching shafts 502 on the mounting base 1 enable multi-stage stretching of the filament. When the filament passes between the first stretching shaft 502 and the second stretching shaft 508, the anti-slip protrusions 503 evenly distributed on its outer wall increase the friction between it and the filament, ensuring that the filament does not slip during the stretching process and the stretching is completed smoothly. Finally, the stretched filament is wound up by the take-up shaft 401 at the right end of the upper surface of the mounting base 1.

[0035] 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.

[0036] 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 multi-stage stretching device for ultra-fine denier polyester filament, comprising a mounting base (1), characterized in that: The mounting base (1) is provided with a stretching mechanism for ultra-fine denier polyester filaments, the stretching mechanism including: The guide assembly includes a support frame (2) fixed to the upper surface of the mounting base (1), a mounting shell (3) fixed to the side wall of the support frame (2), a mounting bracket (305) connected by an elastic component is provided inside the mounting shell (3), and a guide wheel body (306) is provided on the inner side of the mounting bracket (305). The tensioning assembly includes a slide rail bracket (5) located on the right side of the support frame (2) on the upper surface of the mounting base (1). A first adjusting bracket (501) is slidably connected inside the slide rail bracket (5). A first tensioning shaft (502) is rotatably connected to the inner wall of the first adjusting bracket (501). Anti-slip protrusions (503) are evenly distributed on the outer wall of the first tensioning shaft (502). A second adjusting bracket (507) is located below the first adjusting bracket (501). A second tensioning shaft (508) is rotatably connected to the inner wall of the second adjusting bracket (507).

2. The multi-stage stretching device for ultra-fine denier polyester filament according to claim 1, characterized in that: The upper left end of the mounting base (1) is fixed with a wire feeding shaft (4), and the upper right end of the mounting base (1) is provided with a wire take-up shaft (401).

3. The multi-stage stretching device for ultra-fine denier polyester filament according to claim 1, characterized in that: The upper end of the support frame (2) is fixed with a support slide rail (201), and a slider (202) is slidably connected to the inner wall of the support slide rail (201). A pressure roller (203) is rotatably connected to the inner wall of the slider (202). An electric push rod (204) is fixedly fixed through the upper end of the support slide rail (201). The telescopic end of the electric push rod (204) is fixedly connected to the slider (202). A heating roller (205) is provided on the inner side of the support slide rail (201) below the pressure roller (203).

4. The multi-stage stretching device for ultra-fine denier polyester filament according to claim 1, characterized in that: The elastic component includes a cavity groove (301) opened inside the mounting housing (3), a pair of shock-absorbing springs (302) are fixed at the bottom of the cavity groove (301), the inner ring of the shock-absorbing springs (302) is provided with a damping support rod (303) fixed to the bottom of the cavity groove (301), a buffer block (304) is fixed at the upper end of the shock-absorbing springs (302), the buffer block (304) is slidably connected to the mounting housing (3), and the mounting bracket (305) is located at the upper end of the buffer block (304).

5. The multi-stage stretching device for ultra-fine denier polyester filament according to claim 1, characterized in that: The guide wheel body (306) is located inside the mounting bracket (305) and a pair of guide wheel bodies (306) are evenly distributed along the horizontal direction of the support frame (2).

6. The multi-stage stretching device for ultra-fine denier polyester filament according to claim 1, characterized in that: A fixing plate (504) is fixed to the side wall of the slide rail bracket (5). A pair of positioning rods (505) are fixed to the lower end face of the fixing plate (504). The first adjusting bracket (501) and the second adjusting bracket (507) are slidably connected to the positioning rods (505). A bidirectional screw (506) is rotatably connected to the center of the fixing plate (504), and the first adjusting bracket (501) and the second adjusting bracket (507) are threadedly connected to the bidirectional screw (506).

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