A polyester filament thermal stretching device

Abstract

This utility model provides a polyester filament hot stretching device, relating to the field of polyester filament processing technology. The device includes an operating table, an oiling section, a stretching section, and a power unit. The power unit is mounted on a mounting plate and drives a guiding unit, a preheating unit, a heating unit, and a cooling stretching unit to rotate simultaneously. The guiding unit, preheating unit, and heating unit rotate at the same speed, while the cooling stretching unit rotates at a higher speed than the guiding unit. This hot stretching device can clean dust from the polyester filament surface using two cleaning sponges, ensuring heat conduction and reducing breakage rates. Simultaneously, the pressure from the two oiling sponges coats the polyester filament surface with a thin oil film. This oil film not only prevents static electricity from being generated due to friction during polyester filament movement but also reduces friction between the polyester filament and the rollers, ensuring safe hot stretching and guaranteeing the quality of the polyester filament.

Description

Technical Field

[0001] This utility model relates to the field of polyester filament processing technology, specifically a polyester filament hot stretching device. Background Technology

[0002] Thermo-stretching of polyester filament is a key fiber manufacturing process. Its main function is to improve the strength and modulus of polyester filament, reduce elongation, and improve its physical and mechanical properties, making it more suitable for various applications.

[0003] When polyester filament is hot-stretched, a hot-stretching device is required. Existing hot-stretching devices include multiple heating rollers. The heating rollers heat the polyester filament to a predetermined temperature, and then the stretching rollers stretch the polyester filament. However, during the movement of the polyester filament, its surface is prone to static electricity due to friction, which often attracts a lot of dust, affecting heat conduction, increasing the breakage rate of the polyester filament, and affecting the quality of the polyester filament. Utility Model Content

[0004] The purpose of this invention is to provide a polyester filament hot stretching device, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: the polyester filament hot stretching device includes:

[0006] The control panel includes a base cabinet and a mounting plate disposed on the base cabinet;

[0007] An oiling section is provided on a mounting plate and is used to clean and oil unstretched polyester filaments.

[0008] The stretching section is mounted on the mounting plate and includes a guiding unit, a preheating unit, a heating unit, and a cooling stretching unit. After passing through the oiling section, the polyester yarn is guided by the guiding unit and then sequentially passes through the preheating unit, the heating unit, and the cooling stretching unit.

[0009] The power unit is mounted on the mounting plate and is used to drive the guiding unit, preheating unit, heating unit, and cooling stretching unit to rotate simultaneously. The guiding unit, preheating unit, and heating unit rotate at the same speed, while the cooling stretching unit rotates at a speed greater than that of the guiding unit.

[0010] Preferably, the oiling part includes a support plate, one end of which is provided with a mounting groove. The upper end of the mounting groove is open, and a top cover is rotatably connected to the upper end of the mounting groove. The lower end of the top cover is open, and slots are provided on both sides of the top cover. The interior of the mounting groove and the top cover are respectively provided with partitions, which divide the interior of the mounting groove and the top cover into a cleaning chamber and an oiling chamber, respectively. The cleaning chamber of the top cover and the mounting groove are respectively provided with cleaning sponges, and the oiling chamber of the top cover and the mounting groove are respectively provided with oiling sponges. The oiling chamber of the mounting groove is filled with lubricant. The top cover is provided with a sliding groove, and a hook plate is slidably connected inside the sliding groove. A baffle is provided at the upper end of the hook plate, and a compressible rubber sleeve is fitted on the hook plate between the sliding groove and the baffle.

[0011] Preferably, the guiding unit, preheating unit, heating unit, and cooling stretching unit in the stretching section are respectively a guiding roller, a preheating roller, a heating roller, and a cooling roller, and the outer diameters of the guiding roller, preheating roller, heating roller, and cooling roller are all the same and are rotatably connected to the mounting plate.

[0012] Preferably, the power unit includes a motor, a main shaft is provided on the mounting plate, the output end of the motor is connected to the main shaft, the main shaft is connected to the cooling roller, the preheating roller and the heating roller, and the heating roller and the guide roller are respectively connected by sprockets and chains, the cooling roller and the preheating roller are connected by gears, and the cooling roller and the preheating roller are connected by a reduction gear transmission.

[0013] Preferably, a first limiting ring and a second limiting ring are provided on one side of the mounting plate. When the polyester filament enters the cooling roller from the heating roller, it needs to pass through the first limiting ring. When the polyester filament is wound around the cooling roller a certain number of times and leaves the cooling roller, it needs to pass through the second limiting ring.

[0014] The beneficial effects of this utility model are:

[0015] This type of hot stretching device can clean the dust on the surface of polyester yarn using two cleaning sponges, ensuring heat conduction and reducing the breakage rate. At the same time, the pressure from the two oiled sponges applies a thin oil film to the surface of the polyester yarn. This oil film not only prevents static electricity from being generated due to friction when the polyester yarn moves, but also reduces the friction between the polyester yarn and the rollers, ensuring that the polyester yarn can be safely hot stretched and guaranteeing the quality of the polyester yarn. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0017] Figure 2 yes Figure 1A magnified view of a portion of point A in the middle.

[0018] Figure 3 This is a cross-sectional view of the rubber sleeve.

[0019] Figure 4 This is a schematic diagram of the internal structure of the mounting slot and top cover.

[0020] Figure 5 This is a schematic diagram of the power unit's transmission.

[0021] In the diagram: 1. Polyester filament; 2. Base cabinet; 3. Mounting plate; 4. Support plate; 5. Mounting groove; 6. Top cover; 7. Partition; 8. Cleaning sponge; 9. Oiled sponge; 10. Slide groove; 11. Hook plate; 12. Baffle; 13. Rubber sleeve; 14. Guide roller; 15. Preheating roller; 16. Heating roller; 17. Cooling roller; 18. Motor; 19. Main shaft; 20. Sprocket; 21. Chain; 22. First limiting ring; 23. Second limiting ring; 24. Gear. Detailed Implementation

[0022] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0023] like Figure 1-5 As shown, a polyester filament hot stretching apparatus includes:

[0024] The control panel includes a base cabinet 2 and a mounting plate 3 set on the base cabinet 2;

[0025] The oiling section is installed on the mounting plate 3. The oiling section is used to clean and oil the polyester filaments 1 that have passed through and have not been heat-stretched.

[0026] The stretching section is set on the mounting plate 3. The stretching section includes a guiding unit, a preheating unit, a heating unit, and a cooling stretching unit. After passing through the oiling section, the polyester yarn 1 is guided by the guiding unit and then passes through the preheating unit, the heating unit, and the cooling stretching unit in sequence.

[0027] The power unit is mounted on the mounting plate 3. The power unit is used to drive the guide unit, preheating unit, heating unit and cooling stretching unit to rotate simultaneously. The guide unit, preheating unit and heating unit have the same rotation speed, and the cooling stretching unit has a higher rotation speed than the guide unit.

[0028] Furthermore, the oiling section includes a support plate 4, one end of which is provided with an installation groove 5. The upper end of the installation groove 5 is open, and a top cover 6 is rotatably connected to the upper end of the installation groove 5. The lower end of the top cover 6 is open, and slots are provided on both sides of the top cover 6. The interiors of the installation groove 5 and the top cover 6 are respectively provided with partitions 7, which divide the interiors of the installation groove 5 and the top cover 6 into a cleaning chamber and an oiling chamber, respectively. The cleaning chambers of the top cover 6 and the installation groove 5 are respectively provided with cleaning sponges 8, and the oiling chambers of the top cover 6 and the installation groove 5 are respectively provided with oiling sponges 9. The oiling chamber of the installation groove 5 is filled with lubricant. The top cover 6 is provided with a sliding groove 10, and a hook plate 11 is slidably connected inside the sliding groove 10. A baffle 12 is provided at the upper end of the hook plate 11, and a compressible rubber sleeve 13 is fitted on the hook plate 11 between the sliding groove 10 and the baffle 12.

[0029] The mounting slot 5 and the top cover 6 are connected by a hinge. The mounting slot 5 is filled with lubricant. The oiling sponge 9 located in the mounting slot 5 can continuously absorb the lubricant from the mounting slot 5 into the oiling sponge 9 through capillary action, until the oiling sponge 9 is saturated with lubricant. Then, polyester filament 1 is placed on the oiling sponge 9 and cleaning sponge 8 in the mounting slot 5. Next, the top cover 6 is flipped over so that it flips onto the mounting slot 5. By pressing down the baffle 12, the lower end of the hook plate 11 can hook onto the lower surface of the mounting slot 5. After the lower end of the hook plate 11 hooks onto the mounting slot 5, the baffle 12 is released, and the rubber sleeve 13 begins to return, keeping the hook plate 11 connected to the mounting slot 5. At this time, the mounting slot 5 and the top cover 6 are... Both the oiled sponge 9 and the cleaning sponge 8 are in a compressed state. When the polyester filament 1 passes through the cleaning sponge 8, the two cleaning sponges 8 are in a dry state, which can provide a certain friction force to clean the dust adsorbed by static electricity on the surface of the polyester filament 1. Then the polyester filament 1 will pass through the two oiled sponges 9. The lubricant in the two oiled sponges 9 can be transferred to the surface of the polyester filament 1, so that the surface of the polyester filament 1 is coated with lubricant. Because the two oiled sponges 9 are squeezed against each other, the thickness of the lubricant on the surface of the polyester filament 1 is relatively thin. It can only help reduce the friction when passing through the guiding unit, preheating unit, heating unit and cooling stretching unit. No excess lubricant will be dripped or carried away.

[0030] Furthermore, the guiding unit, preheating unit, heating unit, and cooling stretching unit in the stretching section are respectively the guiding roller 14, preheating roller 15, heating roller 16, and cooling roller 17. The outer diameters of the guiding roller 14, preheating roller 15, heating roller 16, and cooling roller 17 are all the same and are all rotatably connected to the mounting plate 3.

[0031] An external winding device is provided to provide tension for the movement of the polyester filament 1. The winding device can wind up the polyester filament 1 after heat stretching. The guide roller 14 is used to change the moving direction of the polyester filament 1, so as to guide the cleaned and oiled polyester filament 1 to the position of the preheating roller 15. Both the preheating roller 15 and the heating roller 16 are electromagnetically heated and equipped with a temperature control module to monitor their respective temperatures and keep them in a suitable temperature range. For example, for ordinary high-strength polyester filament, the preheating temperature is about 100°C and the heating temperature is about 180°C. The contact time between the high-strength polyester filament and the preheating roller 15 is about 2 seconds, and the contact time with the heating roller 16 is about 1 second. Since the outer diameters of the preheating roller 15 and the heating roller 16 are the same, it is also necessary to control the installation position of the preheating roller 15 and the heating roller 16 so that the contact length between the high-strength polyester filament and the preheating roller 15 is about twice the contact length between the high-strength polyester filament and the heating roller 16.

[0032] For different types or processes of polyester yarn 1, appropriate temperatures, preheating, and heating times can be selected.

[0033] The cooling roller 17 uses circulating water cooling. After the polyester filament 1 is preheated by the preheating roller 15, the temperature of the polyester filament 1 begins to rise, but does not reach the temperature required for hot stretching. Then, the preheated polyester filament 1 is heated by the heating roller 16. After being heated by the heating roller 16, the temperature of the polyester filament 1 reaches the temperature required for hot stretching. Since the polyester filament 1 is wound around the surface of the cooling roller 17 multiple times, there is a large friction between the polyester filament 1 and the cooling roller 17. Since the rotation speed of the cooling roller 17 is faster than that of the heating roller 16, the polyester filament 1 located between the heating roller 16 and the cooling roller 17 will be stretched. The degree of stretching is related to the speed difference between the cooling roller 17 and the heating roller 16. The stretched polyester filament 1 will be rapidly cooled on the surface of the cooling roller 17, thereby achieving the shaping of the polyester filament 1 after hot stretching.

[0034] Furthermore, the power unit includes a motor 18, and a main shaft 19 is provided on the mounting plate 3. The output end of the motor 18 is connected to the main shaft 19. The main shaft 19 is connected to the cooling roller 17, the preheating roller 15 is connected to the heating roller 16, and the heating roller 16 is connected to the guide roller 14 via sprockets 20 and chains 21, respectively. The cooling roller 17 is connected to the preheating roller 15 via gears 24. The cooling roller 17 and the preheating roller 15 are connected via a speed reduction transmission.

[0035] Motor 18 is a geared motor controlled by a PLC system. Motor 18 drives the main shaft 19 to rotate, and through the transmission of sprocket 20 and chain 21, as well as the transmission between two gears 24, it drives the guide roller 14, preheating roller 15, heating roller 16 and cooling roller 17 to rotate simultaneously. For polyester filaments 1 with different elongation rates, the sprocket 20 used for the transmission between cooling roller 17 and preheating roller 15 can be adjusted to change the transmission ratio between cooling roller 17 and preheating roller 15, which facilitates the hot stretching treatment of different polyester filaments 1.

[0036] Furthermore, a first limiting ring 22 and a second limiting ring 23 are provided on one side of the mounting plate 3. When the polyester filament 1 enters the cooling roller 17 from the heating roller 16, the polyester filament 1 needs to pass through the first limiting ring 22. When the polyester filament 1 is wound around the cooling roller 17 a certain number of times and leaves the cooling roller 17, the polyester filament 1 needs to pass through the second limiting ring 23.

[0037] The first limiting ring 22 and the second limiting ring 23 can respectively limit the polyester filament 1 entering the cooling roller 17 and the polyester filament 1 exiting the cooling roller 17, so as to avoid the polyester filament 1 shifting too much on the cooling roller 17 and causing the polyester filament 1 to be squeezed and intertwined on the cooling roller 17.

[0038] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A device for hot stretching polyester filament, characterized in that, include: The control panel includes a base cabinet and a mounting plate disposed on the base cabinet; An oiling section is provided on a mounting plate and is used to clean and oil unstretched polyester filaments. The stretching section is mounted on the mounting plate and includes a guiding unit, a preheating unit, a heating unit, and a cooling stretching unit. After passing through the oiling section, the polyester yarn is guided by the guiding unit and then sequentially passes through the preheating unit, the heating unit, and the cooling stretching unit. The power unit is mounted on the mounting plate and is used to drive the guiding unit, preheating unit, heating unit, and cooling stretching unit to rotate simultaneously. The guiding unit, preheating unit, and heating unit rotate at the same speed, while the cooling stretching unit rotates at a speed greater than that of the guiding unit.

2. The polyester filament hot stretching device according to claim 1, characterized in that, The oiling section includes a support plate, one end of which is provided with an installation groove. The upper end of the installation groove is open, and a top cover is rotatably connected to the upper end of the installation groove. The lower end of the top cover is open, and slots are provided on both sides of the top cover. The interior of the installation groove and the top cover are respectively provided with partitions, which divide the interior of the installation groove and the top cover into a cleaning chamber and an oiling chamber, respectively. The cleaning chamber of the top cover and the installation groove are respectively provided with cleaning sponges, and the oiling chamber of the top cover and the installation groove are respectively provided with oiling sponges. The oiling chamber of the installation groove is filled with lubricant. The top cover is provided with a sliding groove, and a hook plate is slidably connected inside the sliding groove. A baffle is provided at the upper end of the hook plate, and a compressible rubber sleeve is fitted on the hook plate between the sliding groove and the baffle.

3. The polyester filament hot stretching device according to claim 2, characterized in that, The guiding unit, preheating unit, heating unit, and cooling stretching unit in the stretching section are respectively a guiding roller, a preheating roller, a heating roller, and a cooling roller. The outer diameters of the guiding roller, preheating roller, heating roller, and cooling roller are all the same and they are all rotatably connected to the mounting plate.

4. The polyester filament hot stretching device according to claim 3, characterized in that, The power unit includes a motor, and a main shaft is provided on the mounting plate. The output end of the motor is connected to the main shaft. The main shaft is connected to the cooling roller, the preheating roller and the heating roller, and the heating roller and the guide roller through sprockets and chains, respectively. The cooling roller and the preheating roller are connected through gear transmission, and the cooling roller and the preheating roller are connected through a reduction gear transmission.

5. The polyester filament hot stretching apparatus according to claim 4, characterized in that, The mounting plate is provided with a first limiting ring and a second limiting ring on one side. When the polyester filament enters the cooling roller from the heating roller, it needs to pass through the first limiting ring. When the polyester filament is wound around the cooling roller a certain number of times and leaves the cooling roller, it needs to pass through the second limiting ring.

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