Battery separator on-line winding device

Abstract

The application discloses an online positive and reverse winding device for battery separator, which comprises a rotating disc, a paper winding machine installed on the rotating disc and a reversing device arranged above the paper winding machine; the reversing device comprises a horizontal support extending along the paper conveying direction, a plurality of paper supporting rollers rotatably installed on the horizontal support, a reversing motor installed at the end of the horizontal support, a swing arm with one end fixedly connected with the output shaft of the reversing motor and the other end freely inclined downward and outward, and a reversing tension roller rotatably installed at the free end of the swing arm. The combination of the existing winding machine, the rotating disc and the reversing device can realize the online positive or reverse winding operation of the battery separator wet production line, thereby meeting the needs of the customers for the positive or reverse winding of the products; and the positive and reverse winding operation can be switched very conveniently through the rotating disc and the driving motor, so the production efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of battery separator technology, and more specifically to an online forward and reverse winding device for battery separators. Background Technology

[0002] Battery separators are components located between the positive and negative plates in a battery, maintaining a gap between them to prevent contact. Commonly used battery separators include AGM separators, coated paper, and primary lithium battery separator paper, generally manufactured using a wet-process papermaking method. Wet-processed products are available with either a mesh or a rough surface. In the initial stages of battery assembly, the rough surface of the separator paper is typically used to cover the plates, requiring the mesh surface to face outwards and the rough surface inwards. This requirement aligns with the normal winding state of existing wet-process battery separator production lines. In recent years, some battery manufacturers have requested the use of a mesh surface for the separator, requiring the rough surface to face outwards and the mesh surface inwards. The winding equipment of existing wet-process battery separator production lines cannot meet the bidirectional requirements of customers. To satisfy the reverse winding needs of customers, offline secondary reverse winding and slitting technology is used, requiring slitting machines and slitting teams, which impacts the product's physical and chemical properties and yield. Therefore, designing an online forward and reverse winding device for battery separators is of great significance in this field. Summary of the Invention

[0003] The purpose of this invention is to provide an online forward and reverse winding device for battery separators.

[0004] The technical solution adopted in this invention is:

[0005] A battery separator online forward and reverse winding device includes a turntable, a paper winding machine mounted on the turntable, and a reversing device located above the paper winding machine. The reversing device includes a horizontal support extending along the paper conveying direction, several paper support rollers rotatably mounted on the horizontal support, a reversing motor mounted at the end of the horizontal support, a swing arm with one end fixedly connected to the output shaft of the reversing motor and the other end freely tilting downward and outward, and a reversing tension roller rotatably mounted at the free end of the swing arm. The feed end of the paper winding machine is provided with a first guide roller. The paper support rollers, the reversing tension roller, and the first guide roller are arranged in parallel. The reversing tension roller is located below the paper support rollers and above the first guide roller, and the centers of the three are not on the same straight line. During the reverse winding operation, the battery separator paper from the drying device passes through the paper support rollers, the reversing tension roller, and the first guide roller in sequence and enters the paper winding machine. During the forward winding operation, the battery separator paper from the drying device passes through the first guide roller and enters the paper winding machine.

[0006] Furthermore, it also includes a lifting device, which is connected to the horizontal support and is used to drive the horizontal lifting of the horizontal support.

[0007] Furthermore, the lifting device includes four lifting mechanisms arranged on the front and rear sides of the reversing device. Each lifting mechanism includes a cylinder, a cylinder support frame for supporting the cylinder, and a vertical support connected to the cylinder piston rod and driven by the cylinder to move up and down. The upper end of the vertical support is connected to the horizontal support.

[0008] Furthermore, the horizontal support includes a rectangular frame consisting of two horizontal bars and two vertical bars, with the four corners of the rectangular frame fixedly connected to the vertical support.

[0009] Furthermore, several paper-supporting rollers are rotatably positioned below the two horizontal bars via bearing seats.

[0010] Furthermore, a tension sensor is provided at the feed end of the first guide roller, which is used to detect the tension of the battery separator paper entering the paper winding machine.

[0011] Furthermore, the turntable includes a turntable body rotatably mounted via a central rotating shaft and support rollers, a drive motor, a transmission shaft coaxially connected to the output shaft of the drive motor, and a pair of bevel gears, one connected to the central rotating shaft of the turntable body and the other connected to the transmission shaft; the drive motor drives the turntable to rotate 180° forward and backward via the transmission shaft and bevel gears.

[0012] Furthermore, a proximity switch is provided on one side of the turntable, and a first limit block and a second limit block are provided on the turntable body to trigger the proximity switch. The proximity switch cooperates with the first limit block to limit the turntable to the forward winding position of the paper machine, and the proximity switch cooperates with the second limit block to limit the turntable to the reverse winding position of the paper machine.

[0013] Furthermore, the swing arm includes two swing arm rods arranged side by side, an upper fixed rod connected to the upper end of the two swing arm rods, and a lower fixed rod connected to the lower end of the two swing arm rods; the upper fixed rod is coaxially fixedly connected to the output shaft of the reversing motor, and the reversing tension roller is rotatably mounted on the lower fixed rod through a bearing.

[0014] Furthermore, a second guide roller is provided between the paper winding machine and the drying device, and the second guide roller is rotatably mounted on the crossbeam support of the drying device.

[0015] The beneficial effects of the present invention are as follows: The present invention utilizes the combination of an existing winding machine with a turntable and a reversing device to realize online forward or reverse paper winding operations in the wet production line of battery separators, thereby meeting the customer's demand for forward or reverse paper winding of products. Moreover, by setting up a turntable and a drive motor, forward and reverse paper winding operations can be switched very easily, resulting in high production efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the reverse paper winding of an online forward and reverse winding device for battery separators according to the present invention.

[0017] Figure 2 This is a schematic diagram of the forward paper winding of an online forward and reverse winding device for battery separators according to the present invention.

[0018] Figure 3 yes Figure 1 A top view of the paper rolling device without the paper rolling assembly.

[0019] Figure 4 yes Figure 1 A magnified view of a portion of point A in the middle.

[0020] Figure 5 This is a schematic diagram of the swing arm of the present invention. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and a preferred embodiment.

[0022] See Figures 1-4 This embodiment provides an online forward and reverse winding device for battery separators, including a turntable 10, a paper winding device, a reversing device 30, and a lifting device.

[0023] The turntable 10 includes a turntable body 11, a drive motor 12, a transmission shaft 13, a first bevel gear 14, a second bevel gear 15, and support rollers 16. A rotating shaft 111 is located at the center of the bottom of the turntable body 11, allowing the turntable body 11 to be rotatably mounted within a concrete foundation. At least three support rollers 16 are evenly distributed around the bottom outer perimeter of the turntable body 11 to provide rolling support for its rotation and reduce friction. The top surface of the turntable body 11 is at least flush with the upper surface of the concrete foundation for easy installation of the paper winding device. The rotating shaft 111 extends vertically downwards into a vertical mounting hole within the concrete foundation, and the second bevel gear 15 is fixedly mounted at the lower end of the rotating shaft 111. The drive motor 12 is installed in a pit carved into the surface of a concrete foundation. A horizontal through-hole connecting the pit to the vertical mounting hole is also provided within the concrete foundation. A sleeve 131 is fixedly installed within the horizontal through-hole. The drive shaft 13 is rotatably mounted within the sleeve 131 via bearings. One end of the drive shaft 13 is coaxially and fixedly connected to the output shaft of the drive motor 12 via a coupling, and the other end is fixedly fitted with a first bevel gear 14. The first bevel gear 14 meshes with a second bevel gear 15. The turntable is installed within the concrete foundation, eliminating the need for a separate support structure, thus reducing the installation height of the paper winding device and facilitating paper feeding operations.

[0024] In this embodiment, a proximity switch 19 is provided on one side of the turntable 10. The proximity switch 19 is installed in a horizontal mounting hole opened in the concrete foundation, and the horizontal mounting hole communicates with the countersunk hole of the turntable body 11. A first limiting block 17 and a second limiting block 18 for triggering the proximity switch 19 are symmetrically arranged on both sides of the circumferential wall of the turntable body 11.

[0025] The paper winding device includes a paper winding machine 21, a first guide roller assembly, and a tension sensor 23, all bolted to the upper surface of a turntable body 11. The paper winding machine 21 is prior art and is used to wind dried battery separator paper into a roll. The first guide roller assembly includes a guide roller bracket fixed to the front end of the paper winding machine frame by screws, and two first guide rollers 22 rotatably mounted on the guide roller bracket at intervals. The tension sensor 23 is fixed to the front end of the two first guide rollers 22 via a bracket. The two first guide rollers 22 are used to adjust the feed angle of the battery separator paper entering the paper winding machine 21 and to guide the battery separator paper through the tension sensor 23. The tension sensor 23 is prior art and is used to detect the tension of the battery separator paper entering the paper winding machine 21.

[0026] In this embodiment, a second guide roller assembly 50 is provided between the paper winding device and the drying device. The second guide roller assembly 50 includes two second guide rollers 51, which are rotatably mounted on the crossbeam support 52 of the drying device. The second guide roller assembly 50 is provided to transition between the drying device and the paper winding device and the reversing device, facilitating paper feeding operations.

[0027] The reversing device 30 includes a horizontal support 31, paper support rollers 32, a reversing motor 33, a reducer 36, a swing arm 34, and a reversing tension roller 35. The horizontal support 31 includes a rectangular frame consisting of two horizontal bars 311 and two vertical bars 312. The two horizontal bars 311 extend along the paper travel direction. There are five paper support rollers 32, which are rotatably mounted on the two horizontal bars 311 at intervals via bearing seats. The swing arm 34 includes two swing arm rods 342 arranged side by side, an upper fixed rod 341 connected to the upper end of the swing arm rod, and a lower fixed rod 343 connected to the lower end of the swing arm rod. The upper fixed rod 341 is rotatably mounted on the two cross rods 311 through a bearing seat. One end of the upper fixed rod 341 is fixedly connected to the output end of the reducer 36. The input end of the reducer 36 is fixedly connected to the output end of the reversing motor 33. The reversing motor 33 and the reducer 36 are mounted on one of the cross rods 311 through a bracket. The reversing tension roller 35 is rotatably mounted on the lower fixed rod 343 through a bearing.

[0028] The lifting device includes four lifting mechanisms 40 arranged on both sides of the reversing device. Each lifting mechanism 40 includes a cylinder 41, a cylinder support frame 42 for supporting the cylinder, and a vertical support 43 connected to the cylinder piston rod and driven by the cylinder to move up and down. The lower end of the cylinder support frame 42 is fixed to a concrete foundation, and the upper end extends vertically upward to connect to the cylinder 41. The cylinder seat of the cylinder 41 is fixedly installed on the cylinder support frame 42, the cylinder piston rod extends vertically upward to connect to the vertical support 43, and the upper end of the vertical support 43 is fixedly connected to a crossbar 311.

[0029] The working principle of this invention is as follows:

[0030] In the installed state, the paper feed end of the paper machine 21 faces the drying device, the cylinder piston rod of the cylinder 41 extends, and the reversing device 30 reaches its limit height.

[0031] When the main text is needed, refer to Figure 2 The operator guides the partition paper 1 through two second guide rollers 51, tension sensor 23, and two first guide rollers 22 into the paper winding machine 21 to complete the forward winding. The wire side 102 of the forward-wound partition paper faces outward, and the rough side 101 faces inward.

[0032] When you need to reverse the roll, refer to [reference needed]. Figure 1

[0033] (1) The drive motor 12 starts and drives the turntable body 11 to rotate 180° through the transmission shaft 13 and bevel gears 14 and 15. At this time, the second limit block 18 triggers the proximity switch 19, the drive motor 12 stops rotating, and the paper feed end of the paper machine 21 is opposite to the drying device.

[0034] (2) The four cylinders 41 start synchronously, the cylinder piston rod retracts, the reversing device 30 is lowered to a certain height, and the operator makes the partition paper 1 pass through the two second guide rollers 51, the five paper support rollers 32, the tension sensor 23, and the two first guide rollers 22 in sequence to enter the paper winding machine 21 to complete the paper feeding operation.

[0035] (3) After the paper feeding operation is completed, the cylinder piston rod extends and the reversing device 30 rises to a certain height. The tension of the partition paper entering the paper winding machine 21 is detected by the tension sensor 23. The reversing motor 33 is controlled to adjust the rotation angle of the swing arm 34 so that the reversing tension roller 35 supports the wire mesh 102 of the partition paper 1, ensuring that there is a certain tension during the winding of the paper winding machine, and completing the reverse winding. The wire mesh 102 of the reverse-wound partition paper faces inward and the rough surface 101 faces outward.

[0036] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also within the protection scope of the present invention.

Claims

1. A battery separator online forward and reverse winding device, characterized in that, The device includes a turntable (11), a paper winding machine (21) mounted on the turntable, and a reversing device located above the paper winding machine. The reversing device includes a horizontal support (31) extending along the paper conveying direction, several paper support rollers (32) rotatably mounted on the horizontal support, a reversing motor (33) mounted at the end of the horizontal support, a swing arm (34) with one end fixedly connected to the output shaft of the reversing motor and the other end freely tilting downward and outward, and a reversing tension roller (35) rotatably mounted at the free end of the swing arm. The paper winding machine feed mechanism is also included. The first guide roller (22) is provided at the end. The paper support roller, the reversing tension roller and the first guide roller are arranged in parallel. The reversing tension roller is located below the paper support roller and above the first guide roller, and the centers of the three are not on the same straight line. During the reverse winding operation, the turntable body rotates 180°, and the paper feed end of the paper winding machine is opposite to the drying device. The battery separator paper from the drying device passes through the paper support roller (32), the reversing tension roller (35) and the first guide roller (22) in sequence and enters the paper winding machine. The wire side of the reverse-wound separator paper faces inward and the rough side faces outward. In the installed state, the paper feed end of the paper reel faces the drying device. During the forward winding operation, the battery separator paper from the drying device enters the paper reel through the first guide roller (22). The wire side of the forward-winding separator paper faces outward and the rough side faces inward. The feed end of the first guide roller is equipped with a tension sensor, which is used to detect the tension of the battery separator paper entering the paper winding machine. The turntable includes a turntable body that can be rotatably mounted via a central rotating shaft and support rollers, a drive motor, a transmission shaft coaxially connected to the output shaft of the drive motor, and a pair of bevel gears, one connected to the central rotating shaft of the turntable body and the other connected to the transmission shaft; the drive motor drives the turntable to rotate 180° in both directions via the transmission shaft and the bevel gears.

2. The online forward and reverse winding device for battery separators according to claim 1, characterized in that, It also includes a lifting device, which is connected to the horizontal support and is used to drive the horizontal lifting of the horizontal support.

3. The online forward and reverse winding device for battery separators according to claim 2, characterized in that, The lifting device includes four lifting mechanisms arranged on the front and rear sides of the reversing device. Each lifting mechanism includes a cylinder, a cylinder support frame for supporting the cylinder, and a vertical support connected to the cylinder piston rod and driven by the cylinder to move up and down. The upper end of the vertical support is connected to the horizontal support.

4. The online forward and reverse winding device for battery separators according to claim 3, characterized in that, The horizontal support consists of a rectangular frame composed of two horizontal bars and two vertical bars, with the four corners of the rectangular frame fixedly connected to the vertical support.

5. The online forward and reverse winding device for battery separators according to claim 4, characterized in that, Several paper-carrying rollers are rotatably positioned below and between two horizontal bars via bearing seats.

6. The online forward and reverse winding device for battery separators according to claim 1, characterized in that, A proximity switch is provided on one side of the turntable. The turntable body is provided with a first limit block and a second limit block for triggering the proximity switch. The proximity switch cooperates with the first limit block to limit the turntable to the forward winding position of the paper machine, and the proximity switch cooperates with the second limit block to limit the turntable to the reverse winding position of the paper machine.

7. The online forward and reverse winding device for battery separators according to claim 1, characterized in that, The swing arm includes two swing arm rods arranged side by side, an upper fixed rod connected to the upper end of the two swing arm rods, and a lower fixed rod connected to the lower end of the two swing arm rods; the upper fixed rod is coaxially and fixedly connected to the output shaft of the reversing motor, and the reversing tension roller is rotatably mounted on the lower fixed rod through a bearing.

8. The online forward and reverse winding device for battery separators according to claim 1, characterized in that, A second guide roller is provided between the paper winding machine and the drying device. The second guide roller is rotatably mounted on the crossbeam support of the drying device.

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