A drawing device for polyester low stretch yarn

Abstract

The utility model provides a kind of drawing device for dacron low elastic filament, it is related to dacron low elastic filament drawing technical field, the drawing device for dacron low elastic filament includes installation platform and setting on installation platform feeding part, heating part, winding part, transverse moving part and cooling part, feeding part is used to install the tray that has been wound with yarn, and control tray rotation, heating part is used to heat the yarn that is placed on tray, winding part is used to install yarn drum, and yarn is lengthened and wound on yarn drum by the rotation of yarn drum, transverse moving part is used to make yarn evenly wind on yarn drum, spring is sleeved on guide rod, spring is located between fixed block and bottom plate, the device can make the movement of guide ring with tension effect follow the movement of sliding base, so that guide ring and yarn can move together, so that the degree of friction between yarn and guide ring can be reduced, the occurrence of yarn surface burr condition is reduced, and the occurrence of yarn breakage can be effectively reduced, which is beneficial to improve the quality of yarn.

Description

Technical Field

[0001] This utility model relates to the field of polyester low-elasticity yarn drawing technology, specifically a polyester low-elasticity yarn drawing device. Background Technology

[0002] Drafting is a key step in transforming raw, highly crystalline, and poorly oriented polyester unstretched yarn (PFY / POY) into low-elasticity yarn with the desired physical properties and winding state. Drafting equipment is required for this process.

[0003] The drafting device heats the unstretched yarn and then controls the yarn's unwinding and winding speeds, ensuring the winding speed is greater than the unwinding speed. This speed difference allows each meter of yarn to be stretched to the target length. However, existing drafting devices often experience yarn slack during winding, necessitating a separate tensioning mechanism to maintain tension and ensure tight winding onto the bobbin. Since winding requires controlling the yarn's reciprocating movement for even winding, and the tensioning mechanism doesn't follow the yarn's lateral movement, significant lateral friction occurs between the yarn and the tensioning mechanism, leading to burrs on the yarn surface and, in severe cases, breakage, affecting yarn quality. Utility Model Content

[0004] The purpose of this invention is to provide a drawing device for polyester low-elasticity yarn, 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 low-elasticity yarn drawing device includes a mounting platform and a feeding section, a heating section, a winding section, a traversing section, and a cooling section disposed on the mounting platform. The feeding section is used to install a material tray with yarn wound on it and control the rotation of the material tray. The heating section is used to heat the yarn released from the material tray. The winding section is used to install a yarn bobbin and to stretch and wind the yarn onto the bobbin by rotating the bobbin. The traversing section is used to make the yarn evenly wound on the bobbin. The cooling section is used to cool the yarn that has just been stretched. The transverse movement part includes a support frame mounted on a mounting platform, on which a lead screw and a fixed rod are mounted. A first motor for driving the lead screw to rotate is mounted on the mounting platform. The part also includes a slide block, which is threadedly connected to the lead screw and slidably connected to the fixed rod. A fixing block is provided on one side of the slide block. Two through holes are provided on the fixing block. Guide rods are respectively provided inside the two through holes. The two ends of the two guide rods are connected by a top plate and a bottom plate, respectively. A guide ring is provided on the upper surface of the top plate; A spring is fitted onto the guide rod, and the spring is located between the fixed block and the base plate.

[0006] Preferably, the guide rod is provided with a retaining ring, which is located above the fixing block.

[0007] Preferably, the spring is in a compressed state when the retaining ring contacts the fixing block.

[0008] Preferably, a spring is fitted on both guide rods.

[0009] Preferably, a guide plate is provided on the side of the top plate, and the lower end of the guide plate is inclined toward the cooling section.

[0010] The beneficial effects of this utility model are: This device allows the tensioning guide ring to move along with the slide block, enabling the guide ring and yarn to move laterally together. This reduces friction between the yarn and the guide ring, minimizes burrs on the yarn surface, and effectively reduces yarn breakage, thus improving yarn quality. Attached Figure Description

[0011] Figure 1 This is a structural schematic diagram of a specific embodiment of the present invention.

[0012] Figure 2 This is a front view of a specific embodiment of the present utility model.

[0013] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0014] Figure 4 This is a top view of a specific embodiment of the present invention.

[0015] Figure 5 This is a schematic diagram of the structure of the first horizontal axis.

[0016] Figure 6 This is a schematic diagram of the second horizontal axis.

[0017] In the diagram: 1. Mounting platform; 2. Yarn; 3. Material tray; 4. Yarn bobbin; 5. Support frame; 6. Lead screw; 7. Fixing rod; 8. First motor; 9. Slide seat; 10. Fixing block; 11. Guide rod; 12. Top plate; 13. Bottom plate; 14. Guide ring; 15. Spring; 16. First horizontal shaft; 17. Connecting shaft; 18. Second motor; 19. First baffle; 20. First rotating cap; 21. Side plate; 22. First stud; 23. Protrusion; 24. Third motor; 25. Electric heating roller; 26. Fourth motor; 27. Second horizontal shaft; 28. Second baffle; 29. ​​Second rotating cap; 30. Second stud; 31. Water storage tank; 32. Guide wheel; 33. Baffle ring; 34. Guide plate. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0019] like Figure 1-6 As shown, a drawing device for polyester low-elasticity yarn includes a mounting platform and a feeding section, a heating section, a winding section, a traversing section, and a cooling section disposed on the mounting platform. The feeding section is used to mount a spool with yarn wound on it and control the rotation of the spool. The heating section is used to heat the yarn released from the spool. The winding section is used to mount a yarn bobbin and, through the rotation of the bobbin, stretch and wind the yarn onto the bobbin. The traversing section is used to evenly wind the yarn onto the bobbin. The cooling section is used to cool the yarn that has just been stretched. The transverse movement part includes a support frame mounted on a mounting platform, a lead screw and a fixed rod mounted on the support frame, a first motor for driving the lead screw to rotate mounted on the mounting platform, and a slide block, which is threadedly connected to the lead screw and slidably connected to the fixed rod. A fixing block is provided on one side of the slide block. Two through holes are provided on the fixing block. Guide rods are provided inside the two through holes respectively. The two ends of the two guide rods are connected by a top plate and a bottom plate respectively. The upper surface of the top plate is provided with guide rings; A spring is fitted onto the guide rod, and the spring is located between the fixed block and the base plate.

[0020] The feeding unit includes a first horizontal shaft, a connecting shaft, a second motor, a first baffle, a first screw cap, a side plate, and a first stud. The first horizontal shaft and the connecting shaft are mounted on a mounting platform. The second motor can drive the first horizontal shaft to rotate through the connecting shaft. The outer surface of the first horizontal shaft is provided with strip-shaped protrusions. The material tray is provided with a groove that mates with the protrusions. The first horizontal shaft has a threaded hole that mates with the first stud. The first baffle is mounted on the first horizontal shaft. When installing the material tray, the material tray is first installed on the first horizontal shaft so that the groove on the material tray mates with the protrusion on the first horizontal shaft, and one side of the material tray abuts against the first baffle. Then, the first stud is screwed into the threaded hole on the first horizontal shaft. As the first stud is continuously screwed in, the material tray is finally clamped by the side plate and the first baffle. During operation, the second motor drives the material tray to rotate, so that the yarn wound on the outside of the material tray can be released in an orderly manner.

[0021] The heating section includes a third motor and an electric heating roller. The third motor drives the electric heating roller to rotate through a gear transmission mechanism. The yarn on the tray is wound around the surface of the electric heating roller about once and then leaves the electric heating roller. The electric heating roller can heat the passing yarn. The electric heating roller is equipped with a temperature sensor and a temperature control device to make the yarn reach the glass transition temperature, but the heating temperature is lower than the melting point of the yarn, which facilitates the effective stretching of the yarn.

[0022] The winding section includes a fourth motor and a second horizontal shaft. The fourth motor can drive the second horizontal shaft to rotate. A second baffle is provided on the second horizontal shaft. When the yarn bobbin is installed on the winding section, it needs to be first fitted onto the second horizontal shaft and its side aligned with the second baffle. A threaded hole is provided at one end of the second horizontal shaft. It also includes a second nut. A second stud is provided at one end of the second nut. The second stud can be connected to the threaded hole. The yarn bobbin can be fixed to the second horizontal shaft through the second nut and the second baffle. The length of the second horizontal shaft located between the second nut and the second baffle is less than the length of the yarn bobbin.

[0023] Both the second and fourth motors can be equipped with brakes and can be powered off by electromagnetic brakes so that the first and second horizontal shafts will not rotate when the material tray and yarn bobbin are installed.

[0024] The cooling unit includes a water tank mounted on the mounting platform. The water tank has an opening at the top, and guide wheels are installed on both sides of the bottom and the top of the water tank. After the yarn on the tray passes through the electric heating roller, it is guided by the four guide wheels to enter the water tank, where it is cooled. Then, the guide wheels guide the yarn from the water tank to the guide ring. The water tank can be cooled by circulating water to avoid the water temperature in the tank becoming too high.

[0025] The first, second, third, and fourth motors are all controlled by a PLC control system. At the same time, the yarn release and winding speeds are different, with the yarn release speed being less than the winding speed, so that the yarn is subjected to tensile force. This allows the yarn to be stretched normally after being heated by the electric heating roller and reaching a certain temperature. For example, the stretching ratio is 3.5, meaning that 1m of yarn can be stretched to 3.5m.

[0026] At the same time, the yarn needs to be equipped with a speed sensor to control the yarn release and rewind speed.

[0027] The lead screw can be a reciprocating lead screw. With the reciprocating lead screw, the slide can make reciprocating linear motion along the fixed rod without changing the rotation direction of the first motor, thereby evenly winding the yarn onto the yarn bobbin. The lead screw can be a common single-thread lead screw. By controlling the switching of forward and reverse rotation of the output end of the first motor, the slide can make reciprocating linear motion along the fixed rod.

[0028] The guide ring is made of 304 stainless steel with a smooth surface to reduce friction with the yarn.

[0029] When the yarn passes through the guide ring and is wound on the yarn bobbin, the yarn can be pulled down by the weight of the guide rod and the elasticity of the spring, so that the yarn can be kept taut and tightly wound on the yarn bobbin. A softer spring is selected so that the guide ring can move up and down a large range, while avoiding yarn breakage due to excessive tension.

[0030] Furthermore, a retaining ring is provided on the guide rod, which is located above the fixed block. The retaining ring can easily control the initial position of the upper guide ring. When the yarn passes through the guide ring, the operator does not need to manually lift the guide ring upward. At the same time, when the retaining ring contacts the fixed block, it prevents the yarn located between the cooling part and the guide ring from rubbing against the slide.

[0031] Furthermore, when the retaining ring contacts the fixing block, the spring is in a compressed state, ensuring that the guide ring can make accurate and rapid up-and-down movement feedback according to the up-and-down movement of the yarn, and avoiding the situation where the yarn separates from the guide ring.

[0032] Furthermore, springs are fitted onto both guide rods to improve their stability during vertical movement.

[0033] Furthermore, a guide plate is provided on the side of the top plate. The lower end of the guide plate is inclined towards the cooling section. After the yarn is cooled by the cooling water in the water tank, a small amount of water will be attached to its surface. When the yarn passes through the guide ring, some of the water on the yarn will be attached to the guide ring. The guide plate can make the water gradually increasing on the guide ring flow back into the water tank, thereby reducing the occurrence of water falling to the ground.

[0034] 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 drawing device for polyester low-elasticity yarn, comprising a mounting platform and a feeding section, a heating section, a winding section, a traversing section, and a cooling section disposed on the mounting platform, wherein the feeding section is used to mount a spool wound with yarn and control the rotation of the spool; the heating section is used to heat the yarn released from the spool; the winding section is used to mount a yarn bobbin and, through the rotation of the yarn bobbin, stretch and wind the yarn onto the bobbin; the traversing section is used to evenly wind the yarn onto the yarn bobbin; and the cooling section is used to cool the yarn that has just been stretched, characterized in that: The transverse movement part includes a support frame mounted on a mounting platform, on which a lead screw and a fixed rod are mounted. A first motor for driving the lead screw to rotate is mounted on the mounting platform. The part also includes a slide block, which is threadedly connected to the lead screw and slidably connected to the fixed rod. A fixing block is provided on one side of the slide block. Two through holes are provided on the fixing block. Guide rods are respectively provided inside the two through holes. The two ends of the two guide rods are connected by a top plate and a bottom plate, respectively. A guide ring is provided on the upper surface of the top plate; A spring is fitted onto the guide rod, and the spring is located between the fixed block and the base plate; A retaining ring is provided on the guide rod. The retaining ring is located above the fixed block. When the retaining ring contacts the fixed block, the spring is in a compressed state. Both guide rods are fitted with springs.

2. The drawing device for polyester low-elasticity yarn according to claim 1, characterized in that, A guide plate is provided on the side of the top plate, and the lower end of the guide plate is inclined toward the cooling section.

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