Polyethylene fiber production drafting device

Abstract

The utility model discloses a drafting device for polyethylene fiber production, and particularly relates to the technical field of drafting devices, the drafting device comprises a first roller and a second roller, two ends of the first roller and two ends of the second roller achieve stable rotation through an assembling roller, a driving roller, a rotating bearing, a fixing ring and the like, and one end of an oil liquid barrel in a control assembly is connected to the first roller fixing ring. A first movable disc and a second movable disc which can slide are internally arranged, sealing rings on the discs ensure the sealing performance of an oil liquid barrel, an oil liquid hose is matched, the amount of oil liquid flowing into one side of the first movable disc is accurately adjusted, the distance between two rollers is changed, the fiber tension is adjusted in real time, a tension sensor monitors the fiber tension between the rollers, the change is fed back immediately, and an operator rapidly adjusts the oil liquid in sequence; and the spring stretches and retracts as required for buffering, absorbs or releases energy, and pushes the moving disc to reset after the fluctuation is smooth, so that the fiber tension is stably fixed in a proper interval, the fiber damage caused by sudden change of the tension is avoided, and the product quality is improved by virtue of accurate tension regulation and control.

Description

Technical Field

[0001] This utility model relates to the field of drawing device technology, specifically a drawing device for polyethylene fiber production. Background Technology

[0002] In the field of high-performance fiber materials, ultra-high molecular weight polyethylene (UHMWPE) fiber, with its advantages of high strength, high modulus, low density, good chemical corrosion resistance, and environmental aging resistance, plays an irreplaceable role in many key areas such as bulletproof protection, marine engineering, aerospace, and sporting goods. In the production process of UHMWPE fiber, the drawing stage is one of the core steps determining the final performance of the fiber, and the performance of the drawing device directly affects the quality of the fiber and production efficiency.

[0003] In the prior art, for example, Chinese patent with publication number CN207567390U discloses a pre-stretching device for the production of ultra-high molecular weight polyethylene fiber, which includes a frame, a first roller disposed inside the frame, a cylinder connected to the bottom end of the frame, and the piston rod of the cylinder connected to the bottom end of a connecting plate, and a second roller disposed directly below the first roller.

[0004] The aforementioned device controls the tension between rollers using cylinders. During the fiber drawing process, the tension must be maintained within a suitable and stable range. Excessive tension can easily cause fiber breakage, while insufficient tension will not achieve effective drawing and will affect the fiber orientation. This method relies heavily on operator experience to adjust relevant parameters, making it difficult to adapt in real-time to tension changes caused by factors such as fiber linear speed, draw ratio, and fluctuations in raw material properties. This unstable tension control leads to frequent fiber breakage during production, reducing production efficiency, increasing production costs, and complicating quality control. Therefore, we propose a polyethylene fiber drawing device to address these problems. Utility Model Content

[0005] The present invention aims to solve the technical problem of difficulty in controlling the tension between rollers in the prior art.

[0006] Therefore, the technical solution adopted by this utility model is as follows:

[0007] A polyethylene fiber production drawing device includes a first roller and a second roller, a tension sensor installed between the first roller and the second roller, a control component disposed between the two ends of the first roller and the second roller, and assembly rollers fixedly connected to both ends of the first roller and the second roller. An assembly ring groove is formed on the surface of the assembly roller, a rotating bearing is sleeved in the assembly ring groove, and a fixing ring is sleeved on the outer ring wall of the rotating bearing. The control component includes an oil cylinder, one end of which is fixedly connected to the fixing ring at one end of the first roller. A first moving disc and a second moving disc are housed inside the oil cylinder, a return spring is disposed between the first moving disc and the second moving disc, a connecting roller is fixedly connected to the end of the second moving disc away from the first moving disc, and the end of the connecting roller away from the second moving disc is fixedly connected to the fixing ring at one end of the second roller.

[0008] Preferably, both the first and second motion discs have positioning ring grooves on their surfaces, and a sealing ring is fitted inside the positioning ring groove.

[0009] Preferably, a drive roller is fixedly connected to one end of the assembly roller.

[0010] Preferably, both the first and second moving discs are slidably connected to the inner wall of the oil cylinder.

[0011] Preferably, the outer ring wall of the sealing ring is in contact with the inner wall of the oil cylinder.

[0012] Preferably, an oil hose is fixedly connected to one end of the oil cylinder near the first moving disc.

[0013] Preferably, one end of the reset spring is sleeved with a positioning cylinder, the end of the positioning cylinder away from the reset spring is fixedly connected to the first moving disk, and one end of the reset spring is fixedly connected to the bottom of the inner cavity of the positioning cylinder.

[0014] Preferably, the second moving plate has a positioning groove on the side near the first moving plate, and one end of the reset spring is fixedly connected to the bottom of the inner cavity of the positioning groove.

[0015] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0016] The core components of the polyethylene fiber production drawing device in this invention are the first roller and the second roller. Both rollers rotate stably at both ends via assembly rollers, drive rollers, rotating bearings, and fixed rings. In the control assembly, one end of the oil cylinder is connected to the fixed ring of the first roller, and it houses sliding first and second moving discs. Sealing rings on the discs ensure the oil cylinder's airtightness. Using a flexible oil hose, the amount of oil flowing into the first moving disc is precisely controlled, changing the distance between the two rollers and adjusting the fiber tension in real time. A tension sensor monitors the fiber tension between the rollers, providing immediate feedback upon any change. Operators can then quickly adjust the oil accordingly to ensure stable production.

[0017] One end of the return spring is fitted with a positioning sleeve connected to the first moving plate, and the other end is embedded in the positioning groove of the second moving plate, with two rollers connected in the middle. When tension fluctuates, the spring extends and retracts as needed to buffer and absorb or release energy. Once the fluctuation subsides, it pushes the moving plate to return to its original position, stabilizing the fiber tension within a suitable range. This not only avoids fiber damage caused by sudden tension changes but also improves product quality through precise tension control, providing comprehensive support for the efficient and high-quality production of polyethylene fibers. 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 assembly structure of the first roller and the second roller of this utility model.

[0020] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A in the middle.

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

[0022] Figure 5 This is a schematic diagram of the exploded structure of multiple parts of this utility model.

[0023] In the diagram: 1. First roller; 101. Second roller; 102. Assembly roller; 103. Drive roller; 104. Assembly ring groove; 105. Rotary bearing; 106. Fixed ring; 2. Control assembly; 201. Oil cylinder; 202. First moving disc; 203. Second moving disc; 204. Positioning ring groove; 205. Sealing ring; 206. Oil hose; 207. Return spring; 208. Positioning groove; 209. Positioning cylinder; 210. Connecting roller. Detailed Implementation

[0024] 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.

[0025] Example: Figures 1-5As shown, this utility model provides a polyethylene fiber production drawing device, including a first roller 1 and a second roller 101. A control component 2 is arranged between the two ends of the first roller 1 and the second roller 101. An assembly roller 102 is fixedly connected to both ends of the first roller 1 and the second roller 101. A drive roller 103 is fixedly connected to one end of the assembly roller 102. During the polyethylene fiber production process, the fiber is transferred from the first roller 1 to the second roller 101. The rotation of the first roller 1 and the second roller 101 realizes the drawing operation of the fiber. Due to the arrangement of components such as the assembly roller 102, the drive roller 103, and the rotating bearing 105, the first roller 1 and the second roller 101 can rotate stably.

[0026] Furthermore, an assembly ring groove 104 is formed on the surface of the assembly roller 102. A rotating bearing 105 is sleeved inside the assembly ring groove 104, and a fixing ring 106 is sleeved on the outer ring wall of the rotating bearing 105. The control component 2 includes an oil cylinder 201. One end of the oil cylinder 201 is fixedly connected to the fixing ring 106 on one side of the first roller 1. A first moving disc 202 and a second moving disc 203 are built inside the oil cylinder 201. Both the first moving disc 202 and the second moving disc 203 slide against the inner wall of the oil cylinder 201. The connection is made such that both the first moving disc 202 and the second moving disc 203 have positioning ring grooves 204 on their surfaces, and a sealing ring 205 is fitted inside the positioning ring groove 204. The outer ring wall of the sealing ring 205 contacts the inner wall of the oil cylinder 201. An oil hose 206 is fixedly connected to one end of the oil cylinder 201 near the first moving disc 202. A tension sensor is installed between the first roller 1 and the second roller 101, and the tension sensor monitors the tension of the fibers between the first roller 1 and the second roller 101 in real time. When the tension changes, the tension of the device is adjusted by controlling the amount of oil on the first moving disc 202 side of the oil cylinder 201. For example, when the tension increases, the oil can flow into the oil cylinder 201 on one side of the first moving disk 202, pushing the first moving disk 202 towards the second moving disk 203, thereby changing the distance between the first roller 1 and the second roller 101, thus adjusting the tension of the fiber; conversely, when the tension decreases, the oil can be drawn out from one side of the first moving disk 202, causing the first moving disk 202 to move away from the second moving disk 203, thereby increasing the tension of the fiber.

[0027] Furthermore, a return spring 207 is provided between the first moving disc 202 and the second moving disc 203. One end of the return spring 207 is sleeved with a positioning cylinder 209. The end of the positioning cylinder 209 away from the return spring 207 is fixedly connected to the first moving disc 202, and the other end of the return spring 207 is fixedly connected to the bottom of the inner cavity of the positioning cylinder 209. A positioning groove 208 is provided on the side of the second moving disc 203 near the first moving disc 202. One end of the return spring 207 is fixedly connected to the bottom of the inner cavity of the positioning groove 208. A connecting roller 210 is fixedly connected to the end of the second moving disc 203 away from the first moving disc 202. The end of the connecting roller 210 away from the second moving disc 203 is fixedly connected to a fixing ring 106 at one end of the second roller 101. The return spring 207 acts as a buffer during tension changes. When the first moving disc 202 moves due to changes in oil volume, the return spring 207 will compress or stretch according to the direction and amplitude of the movement. After the tension fluctuation ends, the return spring 207 will push the first moving plate 202 and the second moving plate 203 back to a relatively stable position, so that the tension on the fiber is kept within a suitable and stable range.

[0028] The application of tension sensors enables real-time monitoring of the tension on the fibers and timely feedback of tension changes, allowing operators to make quick adjustments and ensuring smooth production. By controlling the amount of oil on one side of the first moving disc 202 in the oil cylinder 201, the distance between the first roller 1 and the second roller 101 can be adjusted more precisely, thereby achieving precise control of fiber tension. This meets the stringent tension requirements in the polyethylene fiber production process, improves product quality, and the reset spring 207 provides a certain buffering force. When the tension on the fiber fluctuates, the reset spring 207 can absorb and release energy, reducing the impact of tension fluctuations on the fiber and preventing fiber breakage or quality degradation due to sudden tension changes.

[0029] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A polyethylene fiber production drafting device characterized by comprising: The system includes a first roller (1) and a second roller (101), with a tension sensor installed between the first roller (1) and the second roller (101). A control component (2) is provided between the two ends of the first roller (1) and the second roller (101). Assembly rollers (102) are fixedly connected to both ends of the first roller (1) and the second roller (101). An assembly ring groove (104) is formed on the surface of the assembly roller (102). A rotating bearing (105) is sleeved in the assembly ring groove (104). A fixing ring (106) is sleeved on the outer ring wall of the rotating bearing (105). The control component (2) includes an oil... A liquid cylinder (201) is fixedly connected at one end to a fixing ring (106) at one end of a first roller (1). The liquid cylinder (201) contains a first moving disc (202) and a second moving disc (203). A return spring (207) is provided between the first moving disc (202) and the second moving disc (203). A connecting roller (210) is fixedly connected at the end of the second moving disc (203) away from the first moving disc (202). The end of the connecting roller (210) away from the second moving disc (203) is fixedly connected to the fixing ring (106) at one end of the second roller (101).

2. The polyethylene fiber production drafting device according to claim 1, characterized by, The first moving disc (202) and the second moving disc (203) are both provided with positioning ring grooves (204), and a sealing ring (205) is sleeved in the positioning ring grooves (204).

3. The polyethylene fiber production drafting device according to claim 1, characterized by, One end of the assembly roller (102) is fixedly connected to a drive roller (103).

4. The polyethylene fiber production drafting device according to claim 1, characterized by, The first moving disc (202) and the second moving disc (203) are both slidably connected to the inner wall of the oil cylinder (201).

5. The polyethylene fiber production drafting device according to claim 2, wherein The outer ring wall of the sealing ring (205) is in contact with the inner wall of the oil cylinder (201).

6. The polyethylene fiber production drafting device according to claim 1, wherein An oil hose (206) is fixedly connected to one end of the oil cylinder (201) near the first moving plate (202).

7. The polyethylene fiber production drafting device according to claim 1, wherein One end of the reset spring (207) is sleeved with a positioning cylinder (209), and the end of the positioning cylinder (209) away from the reset spring (207) is fixedly connected to the first moving plate (202). One end of the reset spring (207) is fixedly connected to the bottom of the inner cavity of the positioning cylinder (209).

8. The polyethylene fiber production drafting device according to claim 1, characterized by The second moving plate (203) has a positioning groove (208) on the side near the first moving plate (202), and one end of the reset spring (207) is fixedly connected to the bottom of the inner cavity of the positioning groove (208).

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