Drawing and shaping structure of FDY (Fully Drawn Yarn) filament

Abstract

The utility model discloses an FDY filament stretching and shaping structure, which comprises a box body and screw rods, an air heater is arranged in the upper side wall of the box body, the screw rods are arranged on the front side and the rear side of the middle part in the box body, the right ends of the screw rods are provided with motors, the peripheries of the screw rods are wrapped with buffer assemblies, the buffer assemblies are in threaded connection with the screw rods, and the buffer assemblies are connected with the box body. And a movable roller is mounted on one side of the buffer assembly. Compared with an existing stretching and shaping structure, the stretching and shaping structure of the FDY filaments has the advantages that the grooves in the fixed roller and the movable roller can conveniently limit the position of each filament body, the banister brush is installed in the inlet and used for brushing away dust and the like attached to the filament bodies, and the cooling structure installed in the outlet can cool the filament bodies to a proper temperature; the hot air blower blows out hot air to heat the filament body, the hot air is discharged through the heat dissipation opening, the internal heat accumulation temperature is prevented from being too high, the motor drives the lead screw to rotate so as to drive the moving block to move left and right, and therefore the stroke of the filament body is changed.

Description

Technical Field

[0001] This utility model relates to the field of FDY filament processing technology, specifically to a stretching and shaping structure for FDY filaments. Background Technology

[0002] Fully drawn yarn (FDY) is produced by introducing a stretching process during spinning, resulting in a wound yarn with high orientation and moderate crystallinity. Common examples include polyester and nylon fully drawn yarns, both belonging to the category of synthetic fiber filaments. FDY fabrics have a smooth and soft hand feel and are frequently used to weave imitation silk fabrics. It has wide applications in clothing and home textiles. FDY filaments typically require stretching and setting. However, in existing heat stretching and setting processes, sudden changes in tension, such as when the machine is first started, can easily cause the yarn to break. Therefore, a new stretching and setting structure for FDY filaments is needed.

[0003] The existing patent, CN219470293U, entitled "A Mother Yarn Stretching and Setting Structure," relates to a mother yarn stretching and setting structure. It includes a cold box, a hot box, and a drafting box, arranged sequentially from bottom to top between the spinning tunnel and the winding machine. The cold box contains a heating assembly and a pair of stretching cold rollers. The hot box includes a first hot box and a second hot box arranged side-by-side, each containing a pair of stretching hot rollers. The drafting box contains at least one pair of drafting rollers. This design is reasonable; the yarn bundle enters the cold box, hot box, and drafting box sequentially. The heating assembly in the cold box increases molecular thermal motion to preheat the yarn bundle, facilitating rapid heating in the subsequent hot boxes and increasing the heating speed. The combination of two hot boxes improves production efficiency. Furthermore, the use of multiple stretching hot rollers in the hot box ensures more uniform stretching and more thorough heating and setting of the mother yarn, effectively reducing quality issues related to roving and yarn thickness.

[0004] The above-mentioned device uses multiple stretching hot rollers in the hot box for stretching and shaping, which can make the stretching more uniform and the heating and shaping of the mother yarn more complete, effectively reducing the quality problems of coarse and fine yarns. However, the yarn is relatively fragile during the heating and stretching process and is prone to breakage when subjected to sudden changes in tension, which affects the processing efficiency and cannot well meet people's needs. In view of the above situation, technical innovation is carried out on the basis of the existing stretching and shaping structure. Utility Model Content

[0005] The purpose of this invention is to provide a stretching and shaping structure for FDY filaments to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a stretching and shaping structure for FDY filaments, comprising a housing and a lead screw. A hot air blower is installed inside the upper side wall of the housing. The lead screw is installed on both the front and rear sides of the center of the housing, and a motor is installed at the right end of the lead screw. A buffer assembly is wrapped around the lead screw, and the buffer assembly is threadedly connected to the lead screw. A moving roller is installed on one side of the buffer assembly.

[0007] Furthermore, the buffer assembly includes a shift block and a buffer spring, and a buffer spring is installed on one side of the shift block. When the tension on the filament body undergoes an unexpected sudden change, the buffer spring extends and retracts to buffer the filament body and prevent it from being pulled apart.

[0008] Furthermore, a heating rod is installed inside the moving roller, and the heating rod is embedded in the moving roller. Heating rods are also installed inside both the fixed roller and the moving roller.

[0009] Furthermore, fixed rollers are installed on the left and right sides inside the box, and the fixed rollers are rotatably connected to the box. The fixed rollers and moving rollers are kept at a suitable temperature by heating rods to prevent the filament body from contacting the fixed rollers and moving rollers and getting cold, which would cause uneven thickness.

[0010] Furthermore, a filament body is provided on the outer side of the fixed roller, and the filament body and the fixed roller are embedded together.

[0011] Furthermore, a heat dissipation vent is installed inside the lower side wall of the enclosure, and the vent is welded to the enclosure. Hot air is discharged through the vent to prevent excessive internal heat accumulation and temperature.

[0012] Furthermore, an inlet is installed inside the left side wall of the housing, and an outlet is provided below the inlet. A soft brush is installed inside the inlet to brush away dust and other debris adhering to the filament body, and a semiconductor cooling tube for rapid cooling is installed inside the outlet.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the grooves on the fixed roller and the moving roller conveniently limit the position of each filament body; a soft brush is installed inside the inlet to brush away dust and other adhering objects on the filament body; when the filament body is output through the outlet, the cooling structure installed inside the outlet can cool the filament body to a suitable temperature; the hot air blower blows hot air to heat the filament body; the hot air is discharged through the heat dissipation vent to prevent the internal heat accumulation temperature from being too high; when it is necessary to change the thickness of the filament body stretching and shaping, the motor drives the lead screw to rotate, thereby driving the moving block to move left and right, changing the position of the moving roller, thereby changing the stroke of the filament body between the fixed roller and the moving roller, and changing the heating, stretching and shaping time.

[0014] 1. This utility model's hot air blower heats the filament body by blowing hot air. The filament body is gradually stretched under tension, and the hot air is discharged through the heat dissipation vent to prevent excessive internal heat accumulation. When it is necessary to change the thickness of the filament body during stretching and shaping, the motor drives the lead screw to rotate, thereby driving the moving block to move left and right, changing the position of the moving roller, thus changing the stroke of the filament body between the fixed roller and the moving roller, and changing the heating, stretching and shaping time. In the event of an unexpected sudden change in the tension on the filament body, the buffer spring extends and retracts to buffer the filament body and prevent it from being broken. The fixed roller and the moving roller are kept at a suitable temperature by the heating rod to prevent the filament body from contacting the fixed roller and the moving roller and getting cold, which would cause uneven thickness. This makes it more adaptable to different production requirements.

[0015] 2. The filament body of this utility model enters the box through the inlet, passes around the fixed roller and exits from the outlet. The grooves on the fixed roller and the moving roller conveniently restrict the position of each filament body, which facilitates the stretching and shaping of multiple filament bodies at one time. A soft brush is installed inside the inlet to brush away dust and other adhering materials on the filament body, preventing the filament body from sticking to dust and other materials during heating and stretching. When the filament body is output through the outlet, the cooling structure installed inside the outlet can cool the filament body to a suitable temperature, preventing the filament bodies from sticking to each other during winding. Attached Figure Description

[0016] Figure 1 This is a front cross-sectional view of the stretching and shaping structure of FDY filament according to the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of a fixed roller for stretching and shaping FDY filament according to the present invention.

[0018] Figure 3 This invention relates to a stretching and shaping structure for FDY filaments. Figure 2 Enlarged structural diagram at point A in the middle;

[0019] Figure 4 This is a partial three-dimensional cross-sectional view of the moving roller of the stretching and shaping structure of FDY filament according to this utility model.

[0020] In the diagram: 1. Box body; 2. Fixed roller; 3. Filament body; 4. Heat dissipation port; 5. Lead screw; 6. Motor; 7. Buffer assembly; 701. Moving block; 702. Buffer spring; 8. Moving roller; 9. Heating rod; 10. Hot air blower; 11. Inlet; 12. Outlet. Detailed Implementation

[0021] like Figure 1-4As shown, a stretching and shaping structure for FDY filaments includes a housing 1 and a lead screw 5. A hot air blower 10 is installed inside the upper side wall of the housing 1. The lead screw 5 is installed on both the front and rear sides of the center of the housing 1, and a motor 6 is installed at the right end of the lead screw 5. A buffer assembly 7 is wrapped around the lead screw 5, and the buffer assembly 7 is threadedly connected to the lead screw 5. A moving roller 8 is installed on one side of the buffer assembly 7, and a heating rod 9 is installed inside the moving roller 8, and the heating rod 9 is embedded in the moving roller 8. A heat dissipation vent 4 is installed inside the lower side wall of the housing 1, and the heat dissipation vent 4 is welded to the housing 1. The hot air blower 10 blows hot air to heat the filament body 3, and the filament body 3 is gradually stretched under tension. Hot air is discharged through the heat dissipation vent 4 to prevent excessive internal heat accumulation. When it is necessary to change the thickness of the filament body 3 during stretching and shaping, the motor 6 drives the lead screw 5 to rotate, thereby driving the moving block 701 to move left and right, changing the position of the moving roller 8, thus changing the stroke of the filament body 3 between the fixed roller 2 and the moving roller 8, and changing the heating, stretching and shaping time. When the tension on the filament body 3 undergoes an unexpected sudden change, the buffer spring 702 extends and retracts to buffer the filament body 3 and prevent it from being broken. The fixed roller 2 and the moving roller 8 are kept at a suitable temperature by the heating rod 9 to prevent the filament body 3 from contacting the fixed roller 2 and the moving roller 8 and getting cold, which would cause uneven thickness. This makes it more adaptable to different production requirements.

[0022] like Figure 1 As shown, fixed rollers 2 are installed on the left and right sides inside the housing 1, and the fixed rollers 2 are rotatably connected to the housing 1. Filament bodies 3 are provided on the outside of the fixed rollers 2, and the filament bodies 3 are embedded in the fixed rollers 2. An inlet 11 is installed inside the left side wall of the housing 1, and an outlet 12 is provided below the inlet 11. The filament bodies 3 enter the housing 1 through the inlet 11, pass around the fixed rollers 2 and exit from the outlet 12. The grooves on the fixed rollers 2 and the moving rollers 8 help to limit the position of each filament body 3, which facilitates the stretching and shaping of multiple filament bodies 3 at one time. A soft brush is installed inside the inlet 11 to brush away dust and other adhering materials on the filament bodies 3, preventing the filament bodies 3 from sticking to dust and other materials during heating and stretching. When the filament bodies 3 are output through the outlet 12, the cooling structure installed inside the outlet 12 can cool the filament bodies 3 to a suitable temperature, preventing the filament bodies 3 from sticking to each other during winding.

[0023] Working Principle: When using this FDY filament stretching and setting structure, firstly, the filament body 3 enters the housing 1 through the inlet 11, passes around the fixed roller 2, and exits from the outlet 12. The grooves on the fixed roller 2 and the moving roller 8 conveniently restrict the position of each filament body 3, facilitating the stretching and setting of multiple filament bodies 3 at one time. A soft brush is installed inside the inlet 11 to remove dust and other adhering substances from the filament body 3, preventing the filament body 3 from sticking to dust and other substances during heating and stretching. When the filament body 3 exits through the outlet 12, the cooling structure installed inside the outlet 12 can cool the filament body 3 to a suitable temperature, preventing the filament bodies 3 from sticking together during winding. The hot air blower 10 blows hot air onto the filament body 3. During heating, the filament body 3 is gradually stretched under tension. Hot air is discharged through the heat dissipation vent 4 to prevent excessive internal heat accumulation. When it is necessary to change the thickness of the filament body 3 during stretching and shaping, the motor 6 drives the lead screw 5 to rotate, thereby driving the moving block 701 to move left and right, changing the position of the moving roller 8, thus changing the stroke of the filament body 3 between the fixed roller 2 and the moving roller 8, and changing the heating, stretching and shaping time. When the tension on the filament body 3 undergoes an unexpected sudden change, the buffer spring 702 extends and retracts to buffer the filament body 3 and prevent it from being broken. The fixed roller 2 and the moving roller 8 are kept at a suitable temperature by the heating rod 9 to prevent the filament body 3 from contacting the fixed roller 2 and the moving roller 8 and getting cold, which would cause uneven thickness. This makes it more adaptable to different production requirements.

Claims

1. A draw-texturing structure of FDY filament comprising a box (1) and a screw rod (5), characterized in that, The upper side wall of the box (1) is internally provided with a hot air machine (10), the lead screw (5) is installed at the middle part of the inside of the box (1) and is provided with a motor (6) at the right end, the lead screw (5) is wrapped with a buffer assembly (7), the buffer assembly (7) is threadedly connected with the lead screw (5), and one side of the buffer assembly (7) is provided with a movable roller (8).

2. A draw-textured structure of FDY filaments according to claim 1, characterized in that, The buffer assembly (7) comprises a moving block (701) and a buffer spring (702), and the moving block (701) is provided with the buffer spring (702) at one side.

3. A draw-textured structure of FDY filaments according to claim 1, characterized in that, The movable roller (8) is internally provided with a heating rod (9), and the heating rod (9) is inlayed with the movable roller (8).

4. The draw-textured structure of FDY filaments according to claim 1, characterized in that, The inside of the box (1) is provided with a fixed roller (2) at the left and right sides, and the fixed roller (2) is rotatably connected with the box (1).

5. A draw-texturing structure of FDY filaments according to claim 4, characterized in that, The outside of the fixed roller (2) is provided with a filament body (3), and the filament body (3) is inlayed with the fixed roller (2).

6. A draw-textured structure of FDY filaments according to claim 1, characterized in that, The inside of the lower side wall of the box (1) is provided with a heat dissipation opening (4), and the heat dissipation opening (4) is welded with the box (1).

7. A draw-textured structure of FDY filaments according to claim 1, characterized in that, The inside of the left side wall of the box (1) is provided with an inlet (11), and the lower side of the inlet (11) is provided with an outlet (12).

Images