Traction edge pressing device and lithium battery diaphragm production equipment

Abstract

The utility model belongs to the technical field of lithium battery diaphragm production, and discloses a traction edge pressing device and lithium battery diaphragm production equipment. The traction edge pressing device comprises a horizontal moving mechanism, a vertical moving mechanism, a traction edge pressing mechanism and a material conveying mechanism. The traction edge pressing mechanism is arranged on the vertical moving mechanism in a sliding mode in the vertical direction and comprises an edge pressing wheel assembly, and the edge pressing wheel assembly is used for providing traction force for rim charge movement; the material conveying mechanism is arranged on the downstream of the traction edge pressing mechanism and comprises a detection assembly and a conveying assembly which are sequentially arranged in the edge material moving direction, and when the detection assembly detects that the edge materials pass through the traction edge pressing mechanism, the conveying assembly starts the working state. According to the traction edge pressing device and the lithium battery diaphragm production equipment, stable tension can be provided for rim charges, meanwhile, the rim charges subjected to traction edge pressing are prevented from being wound, the situation that a cutter cuts the rim charges to break a diaphragm is avoided, only one-man operation is needed, and manpower and material resources are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery diaphragm production, in particular to a traction edge pressing device and lithium battery diaphragm production equipment. Background Art

[0002] In the structure of lithium batteries, the diaphragm is one of the key inner components. The main function of the diaphragm is to separate the positive and negative electrodes of the battery to prevent the two electrodes from contacting and short-circuiting. In addition, it also has the function of allowing electrolyte ions to pass through. In the process of producing diaphragms for lithium-ion batteries, the waste edges at both ends of the main film need to be cut off before the diaphragm is rolled up. The cut edges need to be rolled up by the edge material winding machine.

[0003] In the prior art, a trimming device is used to separate the waste edge materials at both ends of the diaphragm from the main film. The separated edge materials will move forward with the main film, and the edge materials need to be cut manually and pulled to the edge material winder for separate winding. Specifically, when the edge materials are cut, one person needs to continuously pull the edge materials, and ensure that the linear speed of the edge materials and the main film are consistent, provide a certain pulling force for the edge materials, so that the edge materials will not loosen, and also provide sufficient tension for the edge materials at the cutter to ensure that the main film will not break when the cutter cuts the edge materials. At this time, another person is also required to quickly wind the end of the cut edge materials that move with the main film around the edge material winder. After the edge material winder can provide a certain tension for winding, the pulling person stops pulling and clamps the edge materials on the existing edge material traction device.

[0004] The following problems exist in the prior art for winding the edge material: manual pulling is required during the winding process, and the manual pulling speed or force is insufficient when pulling the edge material, resulting in the front end of the edge material loosening, and there is no tension at the position where the cutter cuts the edge material, thereby cutting the edge and breaking the film, and two people are required to operate together to complete it. Utility Model Content

[0005] The purpose of the utility model is to provide a traction and edge pressing device and lithium battery diaphragm production equipment, which can provide stable tension for the edge material, prevent the edge material from being entangled after traction and edge pressing, and avoid the edge material from being broken by the cutter. It only needs one person to operate, saving manpower and material resources.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] On the one hand, a traction and edge holding device is provided, comprising:

[0008] Horizontal movement mechanism;

[0009] A vertical moving mechanism, slidably arranged on the horizontal moving mechanism along a horizontal direction;

[0010] A traction and edge pressing mechanism is slidably arranged on the vertical moving mechanism along the vertical direction, and the traction and edge pressing mechanism comprises an edge pressing wheel assembly, and the edge pressing wheel assembly is used to provide traction for the edge material movement;

[0011] The material transport mechanism is arranged downstream of the traction and edge pressing mechanism, and includes a detection component and a transport component arranged in sequence along the movement direction of the edge material. The detection component and the transport component are communicatively connected. When the detection component detects that the edge material passes through the traction and edge pressing mechanism, the transport component starts the working state.

[0012] Preferably, the vertical movement mechanism comprises:

[0013] A lifting drive assembly, arranged on the horizontal moving mechanism;

[0014] The first lifting guide is drivingly connected to the lifting drive assembly, and the lifting drive assembly is used to drive the first lifting guide to lift in a vertical direction. The pressing wheel assembly is arranged on the first lifting guide.

[0015] Preferably, the pressing wheel assembly comprises a first pressing wheel and a second pressing wheel whose rotation axes are parallel, the spacing between the first pressing wheel and the second pressing wheel is adjustable, and the first pressing wheel is connected to a pressing wheel driving member for driving the first pressing wheel to rotate;

[0016] The traction and pressing mechanism also includes a pressing wheel mounting member connected to the first lifting guide member, the pressing wheel driving member is fixedly connected to the pressing wheel mounting member, the first pressing wheel is connected to the output end of the pressing wheel driving member, and the second pressing wheel is slidably connected to the pressing wheel mounting member along the vertical direction.

[0017] Preferably, the conveying assembly further comprises a guide wheel and a conveying drive assembly, the guide wheel being arranged corresponding to the side of the traction and pressing mechanism from which the edge material exits, and the conveying drive assembly being drivingly connected to the guide wheel so that the guide wheel can move in a horizontal direction.

[0018] Preferably, the detection assembly comprises a detection member, which is mounted on the edge pressing wheel mounting member and is located on a side of the edge material produced by the traction edge pressing mechanism;

[0019] The conveying assembly also includes a conveying member connected to the guide wheel, the conveying member is communicatively connected with the detection member, and the conveying member is used to provide a conveying force for the edge material passing through the guide wheel.

[0020] Preferably, the conveying member is configured as a cylindrical structure with a channel, the axis of the cylindrical structure is parallel to the axis of the first pressing wheel, the conveying member can be connected to compressed air, and the edge material can pass through one end of the channel and out of the other end of the channel under the action of the airflow.

[0021] Preferably, the traction and edge pressing mechanism further comprises:

[0022] A second lifting guide is slidably connected to the edge pressing wheel mounting member in a vertical direction, and the second edge pressing wheel is slidably connected to the edge pressing wheel mounting member through the second lifting guide;

[0023] The second pressing wheel lifting driving member is drivingly connected to the second lifting guide member, and the second lifting guide member moves to drive the first pressing wheel to move in the vertical direction.

[0024] Preferably, the traction and pressing mechanism further includes a buffer member, and before the second lifting guide member moves to press the first pressing wheel and the second pressing wheel together, the second lifting guide member first abuts against the buffer member.

[0025] Preferably, the traction and pressing mechanism also includes a first limit member and a second limit member, the first limit member and the second limit member are both arranged on the pressing wheel mounting member, and are respectively located on the side of the pressing wheel assembly where the edge material enters and the side where the edge material exits, the first limit member and the second limit member are both used to limit the edge material along the rotation direction of the first pressing wheel.

[0026] On the other hand, a lithium battery separator production device is provided, comprising a main film production device and two traction and edge pressing devices as described in any one of the above, wherein the two traction and edge pressing devices are both arranged in the main film production device and are respectively arranged on opposite sides of the discharge end of the main film production device.

[0027] Beneficial effects of the utility model:

[0028] The traction and edge pressing device provided by the utility model comprises a horizontal moving mechanism, a vertical moving mechanism, a traction and edge pressing mechanism and a feeding mechanism. The horizontal moving mechanism and the vertical moving mechanism realize the adjustment of the position of the traction and edge pressing mechanism in the horizontal direction and the vertical direction, so that when the edge material to be cut enters between the first edge pressing wheel and the second edge pressing wheel, the position of the traction and edge pressing mechanism can be adjusted in the vertical direction to adapt to the height of the edge material, the spacing between the first edge pressing wheel and the second edge pressing wheel can be adjusted to press the edge material, and the position of the traction and edge pressing mechanism can be adjusted in the horizontal direction to adapt to the edge material generated by the main film cutting of different widths. After the first edge pressing wheel and the second edge pressing wheel press the edge material, the rotation of the first edge pressing wheel can make the linear speed of the edge material move the same as the linear speed of the main film, provide a certain pulling force for the edge material slitting, so that the edge material will not loosen, and also provide stable tension for the edge material at the cutter, avoid the film breaking caused by the unstable manual traction tension, and ensure that the film will not be broken during the traction process of the cutter cutting the edge material; and the process of cutting the edge material and winding the edge material on the edge material winding device only needs one person to complete, saving manpower and material resources. The arrangement of the detection component and the conveying component enables the edge material passing through the traction and edge pressing mechanism to be promptly conveyed to the winding device for winding the edge material, thereby preventing the edge material passing through the traction and edge pressing mechanism from being entangled with the main film production device and causing the main film to break. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the traction edge pressing device provided in an embodiment of the utility model;

[0030] Figure 2 It is a structural schematic diagram of the vertical moving mechanism provided by an embodiment of the utility model;

[0031] Figure 3 It is a structural schematic diagram of the traction and edge pressing mechanism provided in an embodiment of the utility model.

[0032] In the figure:

[0033] 1. Horizontal moving mechanism; 11. First module; 12. First motor;

[0034] 2. vertical moving mechanism; 21. lifting drive assembly; 211. second module; 2111. first slider; 2112. first slider connecting seat; 2113. first slider fixing seat; 212. second motor; 22. first lifting guide; 221. first slide rail; 23. connecting block; 24. limit block;

[0035] 3. Traction pressing mechanism; 31. Pressing wheel assembly; 311. First pressing wheel; 312. Second pressing wheel; 313. Pressing wheel driving member; 32. Pressing wheel mounting member; 33. Second lifting guide member; 34. Second pressing wheel lifting driving member; 341. Connecting plate; 342. Transition plate; 35. Buffer member; 351. Buffer member connecting seat; 361. First limiting member; 362. Second limiting member; 363. Limiting member connecting seat; 364. Limiting groove; 371. Induction member; 372. Induction bolt; 373. Induction bolt connecting seat; 381. Second guide rail; 382. Second slider;

[0036] 4. Material transport mechanism; 41. Detection assembly; 411. Detection member; 412. Detection connection member; 42. Transport assembly; 421. Guide wheel; 422. Transport drive assembly; 4221. Third module; 4222. Third motor; 423. Transport member;

[0037] 5. Horizontal moving mechanism mounting seat; 6. Vertical moving mechanism mounting seat;

[0038] 100, main film production device; 1001, first bracket; 1002, second bracket; 1003, main roller; 200, main film; 300, side material. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0040] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0043] like Figures 1 to 3 As shown, this embodiment provides a traction and edge pressing device for use in the collection process of diaphragm edge material 300. During the diaphragm production process, the cut edge material 300 needs to be rolled up separately. The traction and edge pressing device is arranged before the edge material 300 rolling device, and is used to traction and guide the cut edge material 300, which is beneficial to the smooth slitting of the preceding main film 200 and the edge material 300 and guides the edge material 300 to complete the subsequent rolling work.

[0044] In some embodiments, the traction and edge pressing device includes a horizontal moving mechanism 1, a vertical moving mechanism 2, a traction and edge pressing mechanism 3 and a material transporting mechanism 4. The vertical moving mechanism 2 is slidably arranged on the horizontal moving mechanism 1 in the horizontal direction; the traction and edge pressing mechanism 3 is slidably arranged on the vertical moving mechanism 2 in the vertical direction, and the traction and edge pressing mechanism 3 includes an edge pressing wheel assembly 31, and the edge pressing wheel assembly 31 is used to provide traction for the movement of the edge material 300; the material transporting mechanism 4 is arranged downstream of the traction and edge pressing mechanism 3, and includes a detection assembly 41 and a transporting assembly 42 arranged in sequence along the movement direction of the edge material 300, and the detection assembly 41 and the transporting assembly 42 are communicatively connected. When the detection assembly 41 detects that the edge material 300 passes through the traction and edge pressing mechanism 3, the transporting assembly 42 starts the working state. Specifically, the first edge pressing wheel 311 is made of aluminum alloy, and the second edge pressing wheel 312 is a rubber-coated wheel. The rubber-coated design can provide friction when the first pressing wheel 311 and the second pressing wheel 312 press the edge material 300, thereby providing friction when the first pressing wheel 311 rotates, thereby achieving a better pressing effect.

[0045] The horizontal moving mechanism 1 and the vertical moving mechanism 2 realize the adjustment of the position of the traction and pressing mechanism 3 in the horizontal and vertical directions, so that when the edge material 300 to be cut off enters between the first pressing wheel 311 and the second pressing wheel 312, the position of the traction and pressing mechanism 3 can be adjusted in the vertical direction to adapt to the height of the edge material 300, the distance between the first pressing wheel 311 and the second pressing wheel 312 is adjusted to press the edge material 300, and the position of the traction and pressing mechanism 3 is adjusted in the horizontal direction to adapt to the edge material 300 generated by cutting the main film 200 with different widths. After the first pressing wheel 311 and the second pressing wheel 312 press the edge material 300, the rotation of the first pressing wheel 311 can make the linear speed of the edge material 300 move the same as the linear speed of the main film 200, providing a certain pulling force for the cutting of the edge material 300, so that the edge material 300 will not loosen, and also provide a stable tension for the edge material 300 at the cutter, avoiding the film breakage caused by the unstable tension of manual traction, and ensuring that the film will not break during the traction process of the cutter cutting the edge material 300; and the process of cutting the edge material 300 and winding the edge material 300 on the edge material 300 winding machine only needs one person to complete, saving manpower and material resources. The setting of the detection component 41 and the conveying component 42 enables the edge material 300 passing through the traction pressing mechanism 3 to be transported to the winding device of the winding edge material 300 in time, preventing the edge material 300 passing through the traction pressing mechanism 3 from being entangled with the main film production device 100 and causing the main film 200 to break.

[0046] Specifically, in order to facilitate the installation of the horizontal moving mechanism 1, the horizontal moving mechanism 1 is installed on the main film production device 100 through the horizontal moving mechanism mounting seat 5. The horizontal moving mechanism 1 includes a first module 11 and a first motor 12. The vertical moving mechanism 2 is installed at the output end of the first module 11 through the vertical moving mechanism mounting seat 6. The first motor 12 can drive the first module 11 to drive the vertical moving mechanism 2 to move in the horizontal direction. In this embodiment, the first module 11 is a linear module, the vertical moving mechanism mounting seat 6 is made of stainless steel, and the stroke of the first module 11 can adapt to main films 200 of various widths, thereby improving the application range of the traction and edge holding device.

[0047] The vertical moving mechanism 2 includes a lifting drive assembly 21 and a first lifting guide 22. The lifting drive assembly 21 is arranged on the horizontal moving mechanism 1. The first lifting guide 22 is drivingly connected to the lifting drive assembly 21. The lifting drive assembly 21 is used to drive the first lifting guide 22 to lift in the vertical direction. The edge pressing wheel assembly 31 is arranged on the first lifting guide 22. The vertical direction is the up and down direction.

[0048] Specifically, the lifting drive assembly 21 includes a second module 211 and a second motor 212. The first lifting guide 22 is arranged at the output end of the second module 211. In order to facilitate the first lifting guide 22 to slide in the vertical direction, the lifting drive assembly 21 also includes a first slide rail 221, a first slider 2111, a first slider connecting seat 2112 and a first slider fixing seat 2113. The first slide rail 221 is arranged on the side of the first lifting guide 22. The first slider 2111 is fixed to the first module 11 through the first slider connecting seat 2112 and the first slider fixing seat 2113 in sequence. The first slide rail 221 slides on the first slider 2111 to make the first lifting guide 22 slide in the vertical direction. The arrangement of the first slider connecting seat 2112 and the first slider fixing seat 2113 makes the sliding of the first lifting guide 22 more stable and avoids shaking during sliding. Preferably, in order to prevent the first lifting guide plate from falling off from the first slider 2111 during the sliding process, both ends of the first guide rail in the vertical direction are provided with stop blocks 24. In this embodiment, the second module 211 is a linear module, and the second motor 212 is a motor with a brake, which prevents the first lifting guide 22 from sliding downward under the action of gravity when the motor is not powered.

[0049] The edge pressing wheel assembly 31 includes a first edge pressing wheel 311 and a second edge pressing wheel 312 whose rotation axes are parallel. The spacing between the first edge pressing wheel 311 and the second edge pressing wheel 312 is adjustable. The first edge pressing wheel 311 is connected to an edge pressing wheel driving member 313 for driving the first edge pressing wheel 311 to rotate. In order to facilitate the arrangement of the first edge pressing wheel 311, the second edge pressing wheel 312 and the edge pressing wheel driving member 313, the traction edge pressing mechanism 3 also includes an edge pressing wheel mounting member 32. The edge pressing wheel mounting member 32 is connected to the first lifting guide member 22. The edge pressing wheel driving member 313 is fixedly connected to the edge pressing wheel mounting member 32. The first edge pressing wheel 311 is connected to the output end of the edge pressing wheel driving member 313. The second edge pressing wheel 312 is slidably connected to the edge pressing wheel mounting member 32 in the vertical direction. Specifically, the edge pressing wheel mounting member 32 is connected to the first lifting guide member 22 through the connecting block 23, so that the lifting and lowering of the first lifting guide member 22 can drive the traction edge pressing mechanism 3 to lift and lower as a whole. Specifically, the pressure wheel mounting member 32 is made of aluminum alloy.

[0050] In order to facilitate the transportation of the edge material 300 passing through the traction and pressing mechanism 3 to the winding device, the conveying component 42 also includes a guide wheel 421 and a conveying drive component 422. The guide wheel 421 is arranged corresponding to one side of the edge material 300 output from the traction and pressing mechanism 3, and the conveying drive component 422 is driven and connected to the guide wheel 421 so that the guide wheel 421 can move in the horizontal direction. The transport drive assembly 422 includes a third module 4221 and a third motor 4222. The guide wheel 421 is installed at the output end of the third module 4221. The third motor 4222 can drive the third module 4221 to drive the guide wheel 421 to move in the horizontal direction, so that the guide wheel 421 can correspond to the discharge end position of the traction and pressing mechanism 3, so that the edge material 300 can be transported to the winding device through the guide wheel 421. The edge material 300 can always be located in the middle position between the first pressing wheel 311 and the second pressing wheel 312 during the transportation process, thereby preventing the edge material 300 from being tilted between the first pressing wheel 311 and the second pressing wheel 312 during the transportation process, causing the edge material 300 to be pulled or worn.

[0051] Preferably, in order to enable the conveying assembly 42 to detect that the edge material 300 passes through the traction and edge pressing mechanism 3, so that the conveying assembly 42 can timely convey the edge material 300 to the winding device, so as to prevent the edge material 300 from continuing to move forward under the action of inertia after passing through the traction and edge pressing mechanism 3, resulting in entanglement with other components of the main film production device 100 and causing the main film 200 to break, the detection assembly 41 includes a detection member 411, which is mounted on the edge pressing wheel mounting member 32 and is located on the side where the edge material 300 is discharged from the traction and edge pressing mechanism 3; the conveying assembly 42 also includes a conveying member 423, which is connected to the guide wheel 421, and the conveying member 423 is communicatively connected with the detection member 411, and the conveying member 423 is used to provide conveying force for the edge material 300 passing through the guide wheel 421. Specifically, the detection assembly 41 also includes a detection connector 412, and the detection member 411 is connected to the edge pressing wheel mounting member 32 through the detection connector 412.

[0052] Specifically, the transport member 423 is configured as a cylindrical structure having a channel, the axis of the cylindrical structure is parallel to the axis of the first edge pressing wheel 311, so that the edge material 300 can be transported to a side away from the main film production device 100 to avoid the edge material 300 from being entangled with the main film production device 100. The transport member 423 can be connected to compressed air, and the edge material 300 can pass through one end of the channel and pass out from the other end of the channel under the action of the airflow. In this embodiment, the transport member 423 is an air amplifier.

[0053] In order to enable the second pressing wheel 312 to move in the vertical direction so as to change the pressing distance between the first pressing wheel 311 and the second pressing wheel 312, the traction pressing mechanism 3 also includes a second lifting guide 33 and a second pressing wheel lifting drive 34. The second lifting guide 33 is slidably connected to the pressing wheel mounting member 32 in the vertical direction, and the second pressing wheel 312 is slidably connected to the pressing wheel mounting member 32 through the second lifting guide 33; the second pressing wheel lifting drive 34 is drivingly connected to the second lifting guide 33, and the second lifting guide 33 moves to drive the first pressing wheel 311 to move in the vertical direction.

[0054] Specifically, in order to facilitate the second lifting guide 33 to drive the second edge pressing wheel 312 to rise and fall, the traction edge pressing mechanism 3 also includes a second guide rail 381 and a second slider 382. The second slider 382 is arranged on the second lifting guide 33, and the second slider 382 slides on the second guide rail 381 in the vertical direction. Among them, there are two second guide rails 381 and two second sliders 382 respectively, so that the sliding of the second lifting guide 33 is more stable. In order to improve the service life of the second guide rail 381 and the second slider 382, ​​the second guide rail 381 and the second slider 382 are both made of stainless steel.

[0055] Specifically, the second edge pressing wheel lifting driver 34 is a rodless cylinder. In order to facilitate the connection of the second lifting guide 33 to the second edge pressing wheel lifting driver 34, the second lifting guide 33 is connected to the output end of the second edge pressing wheel lifting driver 34 in sequence through a transition plate 342 and a connecting plate 341. Both the transition plate 342 and the connecting plate 341 are made of stainless steel.

[0056] Preferably, in order to facilitate the determination of whether the second lifting guide 33 is raised or lowered into place, the second lifting guide 33 is connected with a sensing bolt 372. Specifically, the sensing bolt 372 is fixed to the second lifting guide 33 through a sensing bolt connection seat 373, and the sensing end of the sensing bolt 372 passes through the sensing bolt connection seat 373 and is locked and fixed by a nut. Accordingly, two sensing members 371 are provided on the edge pressing wheel mounting member 32, and the two sensing members 371 are respectively used to sense the sensing bolt 372 after it is raised into place and the sensing bolt 372 after it is lowered into place (only the sensing member 371 used to sense the sensing bolt 372 after it is raised into place is shown in the figure), so as to determine whether the second lifting guide 33 is raised into place or lowered into place.

[0057] Preferably, in order to prevent the second pressing wheel 312 from directly pressing the first pressing wheel 311 and damaging the edge material 300 during the process of moving the second pressing wheel 312 downward to approach the first pressing wheel 311 to press the edge material 300, the traction pressing mechanism 3 also includes a buffer 35, and before the second lifting guide 33 moves to press the first pressing wheel 311 and the second pressing wheel 312, the second lifting guide 33 first abuts against the buffer 35. Specifically, a buffer connection seat 351 is connected to the pressing wheel mounting member 32, and the buffer 35 is fixed to the pressing wheel mounting member 32 through the buffer connection seat 351. In this embodiment, the buffer 35 is a hydraulic buffer, and before the second lifting guide 33 moves to press the first pressing wheel 311 and the second pressing wheel 312, the second lifting guide 33 first abuts against the input end of the hydraulic buffer.

[0058] When the edge material 300 to be cut begins to enter between the first pressing wheel 311 and the second pressing wheel 312, and when the edge material 300 is transported out by the first pressing wheel 311 and the second pressing wheel 312, in order to prevent the edge material 300 from being offset, the traction pressing mechanism 3 also includes a first limit member 361 and a second limit member 362. The first limit member 361 and the second limit member 362 are both arranged on the pressing wheel mounting member 32, and are respectively located on the side of the edge material inlet 300 and the side of the edge material outlet 300 of the pressing wheel assembly 31. The first limit member 361 and the second limit member 362 are both used to limit the edge material 300 along the rotation direction of the first pressing wheel 311.

[0059] Specifically, the first stopper 361 and the second stopper 362 are connected to the edge pressing wheel mounting member 32 through the stopper connecting seat 363, and the first stopper 361 and the second stopper 362 are arranged perpendicular to each other. The first stopper 361 and the second stopper 362 both have a stopper groove 364. When the edge pressing wheel assembly 31 moves to the position of the edge material 300, and the edge material 300 contacts the stopper on the side of the edge material inlet 300, the edge material 300 needs to be manually lifted so that the edge material 300 can be stuck in the stopper groove 364.

[0060] The present embodiment also provides a lithium battery separator production device, including a main film production device 100 and two traction and edge pressing devices, both of which are arranged on the main film production device 100 and are respectively arranged on two opposite sides of the discharge end of the main film production device 100. Specifically, the main film production device 100 includes a first bracket 1001, a second bracket 1002 and a main roller 1003, the first bracket 1001 is used to set the horizontal moving mechanism 1 on the main film production device 100, the second bracket 1002 is used to set the material transport mechanism 4 on the main film production device 100, and the main roller 1003 is used to transport the main film 200 and the edge material 300.

[0061] The working principle of the traction edge pressing device of this embodiment is described below:

[0062] When the main film 200 is passed through the film before production, in order to avoid interference between the film passing path and the traction and edge pressing device of the utility model and provide operating space for the staff, the traction and edge pressing device needs to be as far away from the film passing path as possible. Specifically, the horizontal moving mechanism 1 drives the vertical moving mechanism 2 to drive the traction and edge pressing mechanism 3 to move to the origin position in the direction away from the main film production device 100, and the first lifting guide 22 drives the traction and edge pressing mechanism 3 to rise to the highest position. Through the above steps, the space occupied by the traction and edge pressing device can be as small as possible and away from the main film production device 100, so that the staff can pass the main film 200 through the film; and the second edge pressing wheel 312 is driven to move to the highest position through the edge pressing wheel mounting member 32, so that the distance between the first edge pressing wheel 311 and the second edge pressing wheel 312 is maximized.

[0063] After the film is threaded, the lower cutter separates the edge material 300 from the main film 200, but the edge material 300 will still move forward with the main film 200, so the edge material 300 needs to be cut and transported to the winding device through the traction and edge pressing device for winding the edge material 300. The vertical moving mechanism 2 is driven by the horizontal moving mechanism 1 to drive the traction and edge pressing mechanism 3 to move to the edge pressing position in the direction of the main film production device 100; and the edge material 300 is moved into the limit groove 364 of the limiter on the side of the traction and edge pressing mechanism 3 to feed the edge material 300, and the vertical moving mechanism 2 is continued to be driven to move in the horizontal direction until the width direction of the edge material 300 is completely located between the first edge pressing wheel 311 and the second edge pressing wheel 312; then the second lifting guide member 33 drives the second edge pressing wheel 312 to descend so that the second edge pressing wheel 312 and the first edge pressing wheel 311 are pressed together, so that the edge material 300 is clamped by the first edge pressing wheel 311 and the second edge pressing wheel 312; at the same time, the edge pressing wheel is started The driving member 313 drives the first pressing wheel 311 to rotate, pulling the edge material 300, providing traction for the edge material 300, so that the first pressing wheel 311 has a speed that is the same as the linear speed of the main film 200; then the edge material 300 is manually cut off from the side of the edge material outlet 300 of the pressing wheel assembly 31, and the pressing wheel assembly 31 will continue to provide traction and tension for the edge material 300 on the side of the edge material inlet 300 of the pressing wheel assembly 31; then, because the detection component 41 detects that the edge material 300 passes through the pressing wheel assembly 31, the conveying component 42 starts the working state and conveys the edge material 300 to the side away from the main film 200 production equipment, so as to facilitate the winding of the edge material 300. When cutting the edge material 300, the traction and pressing device provides a certain pulling force for the edge material 300 to prevent the edge material 300 from loosening, and also provides stable tension for the edge material 300 at the cutter, preventing the edge material 300 from getting entangled after traction and pressing, avoiding film breakage caused by unstable manual traction, ensuring that the film will not be broken when the cutter cuts the edge material 300, and the whole process can be completed by one person.

[0064] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A traction edge holding device, characterized in that: include: Horizontal movement mechanism (1); A vertical moving mechanism (2) is slidably arranged on the horizontal moving mechanism (1) along a horizontal direction; A traction and edge pressing mechanism (3) is slidably arranged on the vertical moving mechanism (2) along the vertical direction, and the traction and edge pressing mechanism (3) comprises an edge pressing wheel assembly (31), and the edge pressing wheel assembly (31) is used to provide traction force for the edge material (300) to move; The material transport mechanism (4) is arranged downstream of the traction and edge pressing mechanism (3), and comprises a detection component (41) and a transport component (42) arranged in sequence along the movement direction of the edge material (300). The detection component (41) and the transport component (42) are communicatively connected. When the detection component (41) detects that the edge material (300) passes through the traction and edge pressing mechanism (3), the transport component (42) starts to work.

2. The traction and edge holding device according to claim 1, characterized in that: The vertical moving mechanism (2) comprises: A lifting drive assembly (21), arranged on the horizontal moving mechanism (1); The first lifting guide member (22) is drivingly connected to the lifting drive assembly (21), and the lifting drive assembly (21) is used to drive the first lifting guide member (22) to lift and lower in a vertical direction. The edge pressing wheel assembly (31) is arranged on the first lifting guide member (22).

3. The traction and edge holding device according to claim 2, characterized in that: The pressing wheel assembly (31) comprises a first pressing wheel (311) and a second pressing wheel (312) whose rotation axes are parallel, the distance between the first pressing wheel (311) and the second pressing wheel (312) is adjustable, and the first pressing wheel (311) is connected to a pressing wheel driving member (313) for driving the first pressing wheel (311) to rotate; The traction pressing mechanism (3) also includes a pressing wheel mounting member (32) connected to the first lifting guide member (22); the pressing wheel driving member (313) is fixedly connected to the pressing wheel mounting member (32); the first pressing wheel (311) is connected to the output end of the pressing wheel driving member (313); and the second pressing wheel (312) is slidably connected to the pressing wheel mounting member (32) along a vertical direction.

4. The traction and edge holding device according to claim 3, characterized in that: The transport assembly (42) further comprises a guide wheel (421) and a transport drive assembly (422); the guide wheel (421) is arranged downstream of the traction and edge pressing mechanism (3); the transport drive assembly (422) is drive-connected to the guide wheel (421) so that the guide wheel (421) can move along the width direction of the diaphragm.

5. The traction and edge holding device according to claim 4, characterized in that: The detection assembly (41) comprises a detection member (411), the detection member (411) being mounted on the edge pressing wheel mounting member (32) and being located on a side of the edge pressing mechanism (3) where the edge material (300) exits. The transport component (42) further comprises a transport member (423) connected to the guide wheel (421), the transport member (423) being communicatively connected to the detection member (411), and the transport member (423) being used to provide a conveying force for the edge material (300) passing through the guide wheel (421).

6. The traction and edge holding device according to claim 5, characterized in that: The conveying member (423) is configured as a cylindrical structure having a channel, the axis of the cylindrical structure is parallel to the axis of the first pressing wheel (311), and the conveying member (423) can be connected to compressed air, and the edge material (300) can pass through one end of the channel and pass out from the other end of the channel under the action of the airflow.

7. The traction and edge holding device according to claim 3, characterized in that: The traction and edge pressing mechanism (3) further comprises: A second lifting guide member (33) is slidably connected to the edge pressing wheel mounting member (32) in a vertical direction, and the second edge pressing wheel (312) is slidably connected to the edge pressing wheel mounting member (32) via the second lifting guide member (33); The second pressing wheel lifting driving member (34) is drivingly connected to the second lifting guide member (33), and the second lifting guide member (33) moves to drive the first pressing wheel (311) to move in the vertical direction.

8. The traction and edge holding device according to claim 7, characterized in that: The traction and edge pressing mechanism (3) further comprises a buffer member (35), and before the second lifting guide member (33) moves to press the first edge pressing wheel (311) and the second edge pressing wheel (312), the second lifting guide member (33) first abuts against the buffer member (35).

9. The traction and edge holding device according to claim 3, characterized in that: The traction and edge pressing mechanism (3) further comprises a first limit member (361) and a second limit member (362), wherein the first limit member (361) and the second limit member (362) are both arranged on the edge pressing wheel mounting member (32), and are respectively located on a side of the edge pressing wheel assembly (31) where the edge material (300) enters and a side of the edge material (300) exits, and the first limit member (361) and the second limit member (362) are both used to limit the edge material (300) along the rotation direction of the first edge pressing wheel (311).

10. A lithium battery separator production device, comprising a main film production device (100) and two traction and pressing devices as described in any one of claims 1 to 9, wherein the two traction and pressing devices are both arranged on the main film production device (100) and are respectively arranged on opposite sides of the discharge end of the main film production device (100).

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