Method and apparatus for making a polyamide fiber composite filament

Abstract

The application belongs to the technical field of composite fiber manufacturing, and discloses a polyamide fiber composite filament manufacturing method and manufacturing equipment, which comprises the following steps: S1, winding A-component fiber filaments through a first roller and a second roller in sequence, winding B-component fiber filaments through a third roller and a fourth roller in sequence, combining the A-component fiber filaments wound through the second roller and the B-component fiber filaments wound through the fourth roller through a network nozzle after the A-component fiber filaments and the B-component fiber filaments are combined through a composite roller, then processing the combined filaments through a roller relaxation device, and heating and setting the combined filaments by a heating box; S2, winding the set combined filaments through a guide roller, then guiding the combined filaments by a guide roller set, winding the combined filaments by a winding device, and obtaining polyamide elastic composite fiber filaments with stable shapes; wherein, a tensioning mechanism is arranged on one side of the guide roller set. After the A-component fiber filaments and the B-component fiber filaments are combined and stretched, the tensioning relaxation roller device is used to perform negative overfeed, and the double-component composite fiber is given curling and shrinking to generate better fluffiness and elasticity.

Description

Technical Field

[0001] This invention relates to the field of composite fiber manufacturing technology, and in particular to a method and equipment for manufacturing nylon fiber composite filaments. Background Technology

[0002] Nylon fiber possesses characteristics such as high strength, high abrasion resistance, and good elasticity and resilience. Nylon composite filament refers to synthetic fiber filaments produced from nylon chips through a spinning process; its chemical name is polyamide (PA), commonly known as nylon. Nylon composite filaments are classified in various ways, including FDY (fully drawn yarn), POY (pre-oriented yarn), and DTY (drawn textured yarn). Nylon composite filaments have wide applications in clothing, home textiles, and industrial fields.

[0003] Currently, composite fiber blends are produced by drawing and web bonding, followed by heat setting to create composite fiber filaments. However, the fibers are fused together, resulting in poor fluffiness. Consequently, fabrics made from these fibers are relatively stiff and lack the soft, comfortable feel of a fluffy fabric. Therefore, it is necessary to improve the manufacturing methods for composite filaments in related technologies. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a method and equipment for manufacturing nylon fiber composite filaments.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a method for manufacturing nylon fiber composite filament, comprising the following steps:

[0006] S1. Take the A component fiber filament and the B component fiber filament from their respective feeding rollers. The A component fiber filament passes through the first roller and the second roller in sequence, and the B component fiber filament passes through the third roller and the fourth roller in sequence. The A component fiber filament that passes through the second roller and the B component fiber filament that passes through the fourth roller are combined by the composite roller. The combined composite filament is then networked by the network nozzle, then processed by the roller relaxation device, and finally heated and shaped by the hot box.

[0007] S2. The shaped composite yarn passes around the guide roller, is then guided by the guide roller group, and is finally wound up by the winding device to obtain a stable nylon elastic composite fiber filament.

[0008] One side of the guide roller assembly is equipped with a tensioning mechanism to keep the composite yarn that passes around the guide roller taut, thereby improving the winding quality of the product.

[0009] By adopting the above technical solution, after the A-component fiber filaments and B-component fiber filaments are stretched together, a tension relaxation roller device is used to perform negative overfeeding, which gives the bicomponent composite fiber a curling and shrinking effect, resulting in a better fluffiness and elasticity.

[0010] Furthermore, the A component fiber filament is nylon bicomponent high and low viscoelastic fiber POY, and the B component fiber filament is nylon gear-shaped suction and discharge filament fiber POY.

[0011] Furthermore, the setting temperature in the hot box is 0℃-220℃, the draw ratio of component A fiber filament and component B fiber filament is 0%-200%, and the draw ratio of the composite yarn after treatment by the roller relaxation device is 0%-15%.

[0012] By adopting the above technical solution, the A-component fiber filaments are stretched by the first and second rollers, and under a certain tensile tension, they elongate to become drawn filaments. The B-component fiber filaments are stretched by the third and fourth rollers, and under a certain tensile tension, they elongate to become drawn filaments.

[0013] This application also discloses a manufacturing apparatus for a method of producing nylon fiber composite filaments, comprising a first feeding roller for component A fiber filaments, a second feeding roller for component B fiber filaments, a first roller, a second roller, a third roller, a fourth roller, a composite roller, a mesh nozzle, a roller relaxation device, a heating box, guide rollers, a guide roller group, a winding device, uprights, and a tensioning mechanism. Two uprights are provided and parallel to each other. The guide rollers are rotatably mounted between the two uprights. The guide roller group includes a first guide roller rotatably mounted between the two uprights and a second guide roller rotatably mounted between the two uprights. The second guide roller cooperates with the first guide roller and clamps the composite filaments transmitted through the guide rollers. The winding device is disposed between the two uprights and is used to wind the composite filaments transmitted through the guide roller group. The tensioning mechanism is disposed between the two uprights and is used to tension the composite filaments transmitted through the guide rollers.

[0014] Furthermore, a connecting plate is fixed between the sidewalls of the two upright plates that are close to each other. A vertical groove is provided on the side of the connecting plate near the guide roller. The tensioning mechanism includes a tensioning component and an auxiliary component. The tensioning component includes a sliding block that slides with the inner wall of the vertical groove, a first spring fixed between the bottom surface of the sliding block and the bottom wall of the vertical groove, a first connecting rod hinged to the side of the sliding block near the guide roller, an upper mounting rod hinged to the sidewall of the connecting plate near the guide roller, an upper tensioning roller rotatably mounted on the end of the upper mounting rod away from the connecting plate, a second connecting rod hinged to the middle section of the upper mounting rod, a lower mounting rod hinged to the sidewall of the connecting plate near the guide roller and parallel to the upper mounting rod, and a lower tensioning roller rotatably connected to the end of the lower mounting rod away from the connecting plate.

[0015] The end of the first connecting rod away from the sliding block is hinged to the bottom of the upper mounting rod, the middle section of the lower mounting rod is hinged to the lower end of the second connecting rod, and the end of the lower mounting rod away from the lower tension roller is hinged to the side wall of the connecting plate near the guide roller.

[0016] By adopting the above technical solution, the second guide roller cooperates with the first guide roller to clamp the composite filament transmitted through the guide roller, and the winding device winds up the composite filament transmitted through the guide roller group. During this process, due to the elastic force of the first spring, the parallelogram structure formed by the upper mounting rod, the second connecting rod, the lower mounting rod and the connecting plate continuously deforms. The upper tension roller and the lower tension roller cooperate to press against the composite filament transmitted through the guide roller, ensuring the winding quality of the composite filament by the winding device.

[0017] Furthermore, the auxiliary component includes a horizontal plate fixed to the bottom of the connecting plate, a vertical rod that passes through the horizontal plate and slides with the horizontal plate, a transmission ball fixed to the upper end of the vertical rod, an arc-shaped plate fixed to the lower end of the transmission ball and cooperating with the top of the second guide roller, and a second spring sleeved on the vertical rod. The upper and lower ends of the second spring abut against the bottom of the horizontal plate and the top of the arc-shaped plate, respectively, and the top of the transmission ball abuts against the bottom of the lower mounting rod.

[0018] By adopting the above technical solution, under the elastic force of the second spring, the top of the transmission ball and the bottom of the lower mounting rod are pressed together. When the supply speed of the composite yarn is fast, the winding speed of the winding device cannot react in time, and the composite yarn is prone to loosening. The second guide roller and the first guide roller are tensioned by the elastic force of the first spring to ensure the winding quality of the composite yarn by the winding device. When the supply speed of the composite yarn is normal and the winding device is full of products for roll change, the composite yarn is taut and acts on the second guide roller and the first guide roller, causing the first spring to be compressed. This causes the lower mounting rod to press down against the transmission ball, compressing the second spring. The bottom of the arc-shaped plate is pressed against the top of the second guide roller, thereby limiting the rotation of the second guide roller and stopping the feeding of material to the winding device to facilitate the roll change operation.

[0019] Furthermore, the cross-section of the sliding block and the cross-section of the vertical groove are both isosceles trapezoids, and the width of the vertical groove on the side away from the guide roller is greater than the width of the vertical groove on the side closer to the guide roller.

[0020] By adopting the above technical solution, the situation where the sliding block detaches from the vertical groove is avoided.

[0021] Furthermore, the cross-section of the vertical rod is rectangular.

[0022] By adopting the above technical solution, the stability of the arc-shaped plate during the lifting process is ensured, so that the arc-shaped plate always maintains a state of cooperation with the second guide roller.

[0023] In summary, the present invention has the following beneficial effects:

[0024] 1. In this application, after the A-component fiber filaments and B-component fiber filaments are stretched together, a tension relaxation roller device is used to perform negative overfeeding, which gives the bicomponent composite fiber a crimped shrinkage, resulting in a better fluffiness and elasticity.

[0025] 2. In this application, the second guide roller cooperates with the first guide roller and clamps the composite filament transmitted through the guide roller. The winding device winds up the composite filament transmitted through the guide roller group. During this process, due to the elastic force of the first spring, the parallelogram structure formed by the upper mounting rod, the second connecting rod, the lower mounting rod and the connecting plate continuously deforms. The upper tension roller and the lower tension roller cooperate and press against the composite filament transmitted through the guide roller, ensuring the winding quality of the composite filament by the winding device. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the embodiment of the present invention highlighting the connecting plate and its connection structure;

[0028] Figure 3 yes Figure 2 A structural diagram from another perspective;

[0029] Figure 4 This is a structural schematic diagram of an embodiment of the present invention used to highlight the auxiliary components;

[0030] Figure 5 This is a cross-sectional view of an embodiment of the present invention used to highlight the tensioning mechanism;

[0031] Figure 6 yes Figure 5 Enlarged view of point A in the middle;

[0032] Figure 7 This is a schematic diagram illustrating the structure of the tensioning mechanism in an embodiment of the present invention.

[0033] In the diagram: 1. First feed roller; 2. Second feed roller; 3. First roller; 4. Second roller; 5. Third roller; 6. Fourth roller; 7. Composite roller; 8. Network nozzle; 9. Roller relaxation device; 10. Hot box; 11. Guide roller; 12. Guide roller group; 121. First guide roller; 122. Second guide roller; 13. Rewinding device; 14. Vertical plate; 15. Tensioning mechanism; 151. Tensioning assembly; 151 1. Sliding block; 1512. First spring; 1513. First connecting rod; 1514. Upper mounting rod; 1515. Upper tension roller; 1516. Second connecting rod; 1517. Lower mounting rod; 1518. Lower tension roller; 152. Auxiliary assembly; 1521. Horizontal plate; 1522. Vertical rod; 1523. Transmission ball; 1524. Arc-shaped plate; 1525. Second spring; 16. Connecting plate; 161. Vertical groove. Detailed Implementation

[0034] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0035] like Figure 1-7 As shown in the embodiments of this application, a method for manufacturing nylon fiber composite filaments is disclosed, including the following steps:

[0036] S1. Take the A component fiber filament and the B component fiber filament from their respective feeding rollers. The A component fiber filament passes through the first roller 3 and the second roller 4 in sequence, and the B component fiber filament passes through the third roller 5 and the fourth roller 6 in sequence. The A component fiber filament that passes through the second roller 4 and the B component fiber filament that passes through the fourth roller 6 are combined through the composite roller 7. The combined composite filament is then combined and networked through the network nozzle 8, and then processed by the roller relaxation device 9. After that, it is heated and shaped by the hot box 10.

[0037] S2. The shaped composite yarn passes around the guide roller 11, is then guided by the guide roller group 12, and is finally wound up by the winding device 13 to obtain a stable nylon elastic composite fiber filament.

[0038] One side of the guide roller group 12 is provided with a tensioning mechanism 15 for keeping the composite yarn passing over the guide roller 11 taut to improve the winding quality of the product. Figure 1 (Not shown in the image).

[0039] After the A-component fiber filaments and B-component fiber filaments are stretched together, a tension relaxation roller device is used to perform negative overfeeding, which causes the bicomponent composite fiber to curl and shrink, resulting in a better fluffiness and elasticity.

[0040] In this embodiment, component A is a bicomponent nylon high-low viscoelastic fiber (POY), and component B is a nylon gear-shaped suction-discharge filament fiber (POY). The setting temperature in the heating box 10 is 0℃-220℃, the draw ratio of both component A and component B is 0%-200%, and the draw ratio of the composite yarn after treatment by the roller relaxation device 9 is 0%-15%.

[0041] Component A fibers are stretched by rollers 3 and 4 under a certain tensile tension, resulting in elongation and becoming drawn fibers. Component B fibers are stretched by rollers 5 and 6 under a certain tensile tension, resulting in elongation and becoming drawn fibers.

[0042] This embodiment also discloses a manufacturing equipment for a method of producing nylon fiber composite filaments, including a first feeding roller 1 for component A fiber filaments, a second feeding roller 2 for component B fiber filaments, a first roller 3, a second roller 4, a third roller 5, a fourth roller 6, a composite roller 7, a mesh nozzle 8, a roller relaxation device 9, a heating box 10, a guide roller 11, a guide roller group 12, a winding device 13, upright plates 14, and a tensioning mechanism 15. Two upright plates 14 are provided and are parallel to each other, and the guide rollers 11 are rotatably mounted on the two upright plates. Between the two vertical plates 14, the guide roller group 12 includes a first guide roller 121 rotatably mounted between the two vertical plates 14 and a second guide roller 122 rotatably mounted between the two vertical plates 14. The second guide roller 122 cooperates with the first guide roller 121 and clamps the composite filament transmitted through the guide roller 11. The winding device 13 is disposed between the two vertical plates 14 and is used to wind the composite filament transmitted through the guide roller group 12. The tensioning mechanism 15 is disposed between the two vertical plates 14 and is used to tension the composite filament transmitted through the guide roller 11.

[0043] In this embodiment, a connecting plate 16 is fixed between the sidewalls of the two upright plates 14 that are close to each other. A vertical groove 161 is provided on the side of the connecting plate 16 near the guide roller 11. The tensioning mechanism 15 includes a tensioning component 151 and an auxiliary component 152. The tensioning component 151 includes a sliding block 1511 that slides with the inner wall of the vertical groove 161, a first spring 1512 fixed between the bottom surface of the sliding block 1511 and the bottom wall of the vertical groove 161, a first connecting rod 1513 hinged to the side of the sliding block 1511 near the guide roller 11, an upper mounting rod 1514 hinged to the sidewall of the connecting plate 16 near the guide roller 11, and a rotatably mounted upper mounting rod 1514. 14. An upper tensioning roller 1515 away from the end of the connecting plate 16, a second connecting rod 1516 hinged to the middle section of the upper mounting rod 1514, a lower mounting rod 1517 hinged to the side wall of the connecting plate 16 near the guide roller 11 and parallel to the upper mounting rod 1514, and a lower tensioning roller 1518 rotatably connected to the end of the lower mounting rod 1517 away from the connecting plate 16; the end of the first connecting rod 1513 away from the sliding block 1511 is hinged to the bottom of the upper mounting rod 1514, the middle section of the lower mounting rod 1517 is hinged to the lower end of the second connecting rod 1516, and the end of the lower mounting rod 1517 away from the lower tensioning roller 1518 is hinged to the side wall of the connecting plate 16 near the guide roller 11.

[0044] The second guide roller 122 cooperates with the first guide roller 121 and clamps the composite filament transmitted through the guide roller 11. The winding device 13 winds up the composite filament transmitted through the guide roller group 12. During this process, due to the elastic force of the first spring 1512, the parallelogram structure formed by the upper mounting rod 1514, the second connecting rod 1516, the lower mounting rod 1517 and the connecting plate 16 continuously deforms. The upper tension roller 1515 and the lower tension roller 1518 cooperate and press against the composite filament transmitted through the guide roller 11, ensuring the winding quality of the composite filament by the winding device 13.

[0045] The auxiliary component 152 includes a horizontal plate 1521 fixed to the bottom of the connecting plate 16, a vertical rod 1522 that passes through the horizontal plate 1521 and slides in cooperation with the horizontal plate 1521, a transmission ball 1523 fixed to the upper end of the vertical rod 1522, an arc-shaped plate 1524 fixed to the lower end of the transmission ball 1523 and cooperating with the top of the second guide roller 122, and a second spring 1525 sleeved on the vertical rod 1522. The upper and lower ends of the second spring 1525 abut against the bottom of the horizontal plate 1521 and the top of the arc-shaped plate 1524, respectively, and the top of the transmission ball 1523 abuts against the bottom of the lower mounting rod 1517.

[0046] Under the elastic force of the second spring 1525, the top of the transmission ball 1523 abuts against the bottom of the lower mounting rod 1517. When the supply speed of the composite yarn is fast, the winding speed of the winding device 13 cannot keep up with the demand, and the composite yarn tends to loosen. The sliding block 1511 moves upward under the elastic force of the first spring 1512. Due to the parallelogram structure formed by the upper mounting rod 1514, the second connecting rod 1516, the lower mounting rod 1517 and the connecting plate 16, and the top of the transmission ball 1523 abutting against the bottom of the lower mounting rod 1517 under the action of the second spring 1525, the second guide roller 122 and the first guide roller 121 tension the composite yarn under the elastic force of the first spring 1512, so as to ensure the winding quality of the composite yarn by the winding device 13. When the composite yarn supply speed is normal and the winding device 13 is full of products for roll changing, the composite yarn is taut and acts on the second guide roller 122 and the first guide roller 121, causing the first spring 1512 to be compressed. This causes the lower mounting rod 1517 to contact the transmission ball 1523 downwards, causing the second spring 1525 to be compressed. The bottom of the arc-shaped plate 1524 is attached to and pressed against the top of the second guide roller 122, thereby limiting the rotation of the second guide roller 122 and stopping the feeding of material to the winding device 13 to facilitate the roll changing operation.

[0047] To prevent the sliding block 1511 from disengaging from the vertical groove 161, both the cross-section of the sliding block 1511 and the cross-section of the vertical groove 161 are isosceles trapezoids, and the width of the side of the vertical groove 161 away from the guide roller 11 is greater than the width of the side of the vertical groove 161 close to the guide roller 11.

[0048] To ensure the stability of the curved plate 1524 during the lifting process, the cross-section of the vertical rod 1522 is rectangular.

[0049] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A device for producing nylon fiber composite filaments, characterized in that: The system includes a first feeding roller (1) for providing A-component fiber filaments, a second feeding roller (2) for providing B-component fiber filaments, a first roller (3), a second roller (4), a third roller (5), a fourth roller (6), a composite roller (7), a mesh nozzle (8), a roller relaxation device (9), a heating box (10), a guide roller (11), a guide roller group (12), a winding device (13), uprights (14), and a tensioning mechanism (15). Two uprights (14) are provided and are parallel to each other. The guide roller (11) is rotatably mounted between the two uprights (14). The assembly (12) includes a first guide roller (121) rotatably mounted between two vertical plates (14) and a second guide roller (122) rotatably mounted between two vertical plates (14). The second guide roller (122) cooperates with the first guide roller (121) and clamps the composite filament transmitted through the guide roller (11). The winding device (13) is disposed between the two vertical plates (14) and is used to wind up the composite filament transmitted through the guide roller assembly (12). The tensioning mechanism (15) is disposed between the two vertical plates (14) and is used to tension the composite filament transmitted through the guide roller (11). A connecting plate (16) is fixed between the sidewalls of the two upright plates (14) that are close to each other. A vertical groove (161) is provided on the side of the connecting plate (16) near the guide roller (11). The tensioning mechanism (15) includes a tensioning component (151) and an auxiliary component (152). The tensioning component (151) includes a sliding block (1511) that slides in cooperation with the inner wall of the vertical groove (161), a first spring (1512) fixed between the bottom surface of the sliding block (1511) and the bottom wall of the vertical groove (161), and a second spring (1512) hinged to the side of the sliding block (1511) near the guide roller (11). A connecting rod (1513), an upper mounting rod (1514) hinged to the side wall of the connecting plate (16) near the guide roller (11), an upper tension roller (1515) rotatably mounted on the end of the upper mounting rod (1514) away from the connecting plate (16), a second connecting rod (1516) hinged to the middle section of the upper mounting rod (1514), a lower mounting rod (1517) hinged to the side wall of the connecting plate (16) near the guide roller (11) and parallel to the upper mounting rod (1514), and a lower tension roller (1518) rotatably connected to the end of the lower mounting rod (1517) away from the connecting plate (16); The end of the first connecting rod (1513) away from the sliding block (1511) is hinged to the bottom of the upper mounting rod (1514), the middle section of the lower mounting rod (1517) is hinged to the lower end of the second connecting rod (1516), and the end of the lower mounting rod (1517) away from the lower tension roller (1518) is hinged to the side wall of the connecting plate (16) near the guide roller (11). The auxiliary component (152) includes a horizontal plate (1521) fixed to the bottom of the connecting plate (16), a vertical rod (1522) that is disposed through the horizontal plate (1521) and slidably engaged with the horizontal plate (1521), a transmission ball (1523) fixed to the upper end of the vertical rod (1522), an arc-shaped plate (1524) fixed to the lower end of the transmission ball (1523) and engaged with the top of the second guide roller (122), and a second spring (1525) sleeved on the vertical rod (1522). The upper and lower ends of the second spring (1525) abut against the bottom of the horizontal plate (1521) and the top of the arc-shaped plate (1524) respectively, and the top of the transmission ball (1523) abuts against the bottom of the lower mounting rod (1517).

2. The equipment for manufacturing nylon fiber composite filaments according to claim 1, characterized in that: The cross-section of the sliding block (1511) and the cross-section of the vertical groove (161) are both isosceles trapezoids. The width of the vertical groove (161) on the side away from the guide roller (11) is greater than the width of the vertical groove (161) on the side close to the guide roller (11).

3. The equipment for manufacturing nylon fiber composite filaments according to claim 1, characterized in that: The cross-section of the vertical rod (1522) is rectangular.

4. A method for manufacturing nylon fiber composite filaments, the method being implemented based on the nylon fiber composite filament manufacturing equipment described in any one of claims 1-3, characterized in that, Includes the following steps: S1. Nylon chips and functional masterbatch are placed into a silo and melted together through a pre-spinning filter, static mixer, and screw extruder to form a spinning melt. S2. The spinning melt passes through the spinneret assembly and is metered by the metering pump. The spinning melt is sprayed out through the spinning assembly to form molten filaments. The molten filaments are cooled by side blowing air to obtain solid filaments. S3. The solid filaments are then oiled, drawn, wound and wound to obtain A-component fiber filaments / B-component fiber filaments; S4. Take the A component fiber filament and the B component fiber filament from their respective feeding rollers. The A component fiber filament passes through the first roller (3) and the second roller (4) in sequence, and the B component fiber filament passes through the third roller (5) and the fourth roller (6) in sequence. The A component fiber filament that passes through the second roller (4) and the B component fiber filament that passes through the fourth roller (6) are combined by the composite roller (7). The combined composite filament is then combined by the network nozzle (8) and then processed by the roller relaxation device (9). After that, it is heated and shaped by the hot box (10). S5. The shaped composite yarn passes around the guide roller (11), is then guided by the guide roller group (12), and is finally wound up by the winding device (13) to obtain a stable nylon elastic composite fiber filament.

5. The method for manufacturing a nylon fiber composite filament according to claim 4, characterized in that: The functional masterbatch is one or more of the following: fluffy masterbatch, antibacterial masterbatch, flame retardant masterbatch, antistatic masterbatch, anti-aging masterbatch, fragrance masterbatch, softening masterbatch, and water-absorbing masterbatch.

6. The method for manufacturing a nylon fiber composite filament according to claim 4, characterized in that: The A component fiber is a nylon bicomponent high and low viscoelastic fiber (POY), and the B component fiber is a nylon gear-shaped suction and discharge filament fiber (POY).

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