Lithium battery diaphragm cutting equipment

Abstract

The utility model belongs to the technical field of lithium battery diaphragm cutting, and particularly relates to lithium battery diaphragm cutting equipment which comprises a bottom plate, two first vertical plates are fixed to the top of the bottom plate, a second rotating shaft is rotationally installed between the two first vertical plates, a cutting roller is arranged on the outer wall of the second rotating shaft, and a plurality of cutting annular cutters are arranged on the outer wall of the cutting roller at equal intervals. First motors connected with the second rotating shafts are arranged on the outer walls of the first vertical plates, first sliding grooves are formed in the opposite outer walls of the two first vertical plates and located above the cutting roller, first sliding blocks are slidably installed in the first sliding grooves, and first springs are arranged at the tops of the first sliding blocks; the top ends of the first springs are fixed to the inner walls of the first sliding grooves, and an extrusion roller is rotationally installed between the two first sliding blocks. According to the lithium battery diaphragm cutting device, a lithium battery diaphragm can be conveniently pressed and fixed, the cutting stability of the lithium battery diaphragm is improved, deviation is avoided, and the cutting quality of the lithium battery diaphragm is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium battery diaphragm cutting, and specifically relates to lithium battery diaphragm cutting equipment. Background Art

[0002] Lithium battery separator is the link with the highest technical barriers in lithium battery materials. Its main function is to separate the positive and negative electrodes of the battery, prevent the two electrodes from contacting and short-circuiting, ensure the wettability and moisture absorption capacity of the electrolyte, and provide thermal stability and automatic shutdown protection performance. At the same time, it can also support the mechanical properties and spatial stability of the battery. The performance of the separator is crucial to the lightweight and safety of lithium batteries, and directly affects the battery's internal resistance, cycle life, battery capacity and other performance. Its core performance indicators include pore size, porosity, wettability and thickness;

[0003] An existing lithium battery diaphragm cutting device needs to cut the lithium battery diaphragm during production. However, the existing cutting device cannot fix the cutting position of the lithium battery diaphragm when cutting the lithium battery diaphragm, which easily causes the lithium battery diaphragm to shift or loosen during the cutting process, resulting in the cutting quality of the lithium battery diaphragm being affected. Utility Model Content

[0004] The purpose of the utility model is to provide a lithium battery diaphragm cutting device, which can facilitate the pressing and fixing of the lithium battery diaphragm, improve the stability of the lithium battery diaphragm cutting, avoid deviation, and improve the quality of the lithium battery diaphragm cutting.

[0005] The technical solutions adopted in this utility are as follows:

[0006] The lithium battery diaphragm cutting equipment comprises a base plate, two first vertical plates are fixed on the top of the base plate, a second rotating shaft is rotatably installed between the two first vertical plates, a cutting roller is arranged on the outer wall of the second rotating shaft, and a plurality of cutting annular knives are equidistantly arranged on the outer wall of the cutting roller, wherein the outer wall of the first vertical plate is provided with a first motor connected with the second rotating shaft, a first slide groove is provided on the outer walls opposite to each other and located above the cutting roller, a first slider is slidably installed inside the first slide groove, a first spring is provided on the top of the first slider, and the top end of the first spring is fixed to the inner wall of the first slide groove, an extrusion roller is rotatably installed between the two first sliders, a plurality of cutting grooves are provided on the outer wall of the extrusion roller corresponding to the cutting annular knife, a flattening component is provided on the top of the base plate and on both sides of the cutting roller, and a winding component is provided on one side of the top of the base plate.

[0007] Furthermore, the leveling component includes two third vertical plates fixed on the top of the bottom plate and located on both sides of the cutting roller, the outer walls of the two third vertical plates facing each other are provided with a second slide groove, a second slider is slidably installed inside the second slide groove, a leveling roller is rotatably installed between the two second sliders and located below the cutting roller, a second spring is fixed on the top of the second slider, and the top end of the second spring is fixed to the inner wall of the second slide groove.

[0008] Furthermore, the winding assembly includes a second vertical plate fixed to one side of the top of the base plate, a third rotating shaft is rotatably installed through one side of the second vertical plate, a detachable winding roller is provided on the outer wall of the third rotating shaft, a hydraulic cylinder is fixed to the top of the base plate and on one side of the winding roller, a U-shaped support is fixed to the output shaft of the hydraulic cylinder corresponding to the third rotating shaft, and the third rotating shaft is rotatably connected to the U-shaped support.

[0009] Furthermore, a pulley is fixed at one end of the second rotating shaft and the third rotating shaft and located on one side of the second vertical plate, and a belt is arranged between the two pulleys.

[0010] Furthermore, a reeling roller is provided on the other side of the top of the bottom plate.

[0011] Furthermore, a limiting block is disposed on the outer wall of the third rotating shaft, and a limiting groove cooperating with the limiting block is disposed on the inner side of the winding roller.

[0012] The technical effects achieved by this utility model are:

[0013] The practical lithium battery diaphragm cutting equipment is provided with an extrusion roller, which drives the extrusion roller on the first slider to always contact the cutting roller through the elastic force of the first spring, so as to be convenient for pressing and fixing the lithium battery diaphragm, thereby improving the stability of the lithium battery diaphragm cutting, avoiding deviation, and improving the cutting quality of the lithium battery diaphragm. In combination with the cutting ring knife and the cutting groove, the cut lithium battery diaphragm can be limited so that the cut lithium battery diaphragm can be attached to the cutting ring knife and move between them to prevent the lithium battery diaphragm from deviating left and right. The leveling roller is provided, which drives the leveling roller to squeeze the lithium battery diaphragm downward through the elastic force of the second spring, thereby leveling the lithium battery diaphragm, avoiding loosening of the lithium battery diaphragm, and further improving the cutting quality of the lithium battery diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model in a front view;

[0015] Figure 2 It is a rear-view stereoscopic structural schematic diagram of the utility model;

[0016] Figure 3 It is a schematic diagram of the partial cutaway structure of the utility model.

[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0018] 1. Bottom plate; 2. First vertical plate; 3. First slide; 4. First slider; 5. First spring; 6. Extrusion roller; 7. Cutting groove; 8. Second rotating shaft; 9. Cutting roller; 10. Cutting ring knife; 11. First motor; 12. Pulley; 13. Unwinding roller; 14. Second vertical plate; 15. Third rotating shaft; 16. Winding roller; 17. Hydraulic cylinder; 18. U-shaped support; 19. Third vertical plate; 20. Second slide; 21. Second slider; 22. Second spring; 23. Smoothing roller; 24. Belt. DETAILED DESCRIPTION

[0019] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.

[0020] like Figure 1-2 As shown, the lithium battery diaphragm cutting equipment comprises a bottom plate 1, two first vertical plates 2 are fixed on the top of the bottom plate 1, a second rotating shaft 8 is rotatably installed between the two first vertical plates 2, a cutting roller 9 is arranged on the outer wall of the second rotating shaft 8, and a plurality of cutting annular knives 10 are equidistantly arranged on the outer wall of the cutting roller 9, wherein a first motor 11 connected to the second rotating shaft 8 is arranged on the outer wall of the first vertical plate 2, a first slide groove 3 is provided on the outer walls of the two first vertical plates 2 facing each other and located above the cutting roller 9, a first slider 4 is slidably installed inside the first slide groove 3, a first spring 5 is arranged on the top of the first slider 4, and the top end of the first spring 5 is fixed to the inner wall of the first slide groove 3, an extrusion roller 6 is rotatably installed between the two first sliders 4, and the extrusion roller 6 is rotatably installed between the two first sliders 4. The outer wall of the pressing roller 6 is provided with a plurality of cutting grooves 7 corresponding to the cutting annular knife 10. The top of the bottom plate 1 and both sides of the cutting roller 9 are provided with flattening components. The top side of the bottom plate 1 is provided with a winding component. The structure is simple and the operation is convenient. The squeezing roller 6 is provided in cooperation with the first spring 5. The first spring 5 drives the first slider 4 to move downward. The first slider 4 drives the squeezing roller 6 to always be in close contact with the cutting roller 9, which can press and fix the lithium battery diaphragm and improve the cutting stability. The provided cutting groove 7 can make the cutting annular knife 10 blade extend into the cutting groove 7 to avoid the squeezing roller 6 and the cutting roller 9 from being unable to contact. The cutting annular knife 10 can also limit the cut lithium battery diaphragm to prevent deviation, which is more practical.

[0021] like Figure 1-2As shown, the leveling assembly includes two third vertical plates 19 which are located on the top of the bottom plate 1 and fixed on both sides of the cutting roller 9, and the corresponding outer walls of the two third vertical plates 19 are provided with second slide grooves 20, and a second slider 21 is slidably installed inside the second slide grooves 20, and a leveling roller 23 is rotatably installed between the two second sliders 21 and located below the cutting roller 9, and a second spring 22 is fixed on the top of the second slider 21, and the top end of the second spring 22 is fixed to the inner wall of the second slide groove 20. The two leveling rollers 23 are provided, and the elastic force of the second spring 22 causes the leveling roller 23 to exert a downward pressure on the lithium battery diaphragm, so that the lithium battery diaphragm can be stretched to prevent the lithium battery diaphragm from being loosened, further improving the cutting stability and levelness, which is more practical.

[0022] like Figure 1-2 As shown, the winding assembly includes a second vertical plate 14 fixed to one side of the top of the bottom plate 1, a third rotating shaft 15 is rotatably installed on one side of the second vertical plate 14, a detachable winding roller 16 is arranged on the outer wall of the third rotating shaft 15, a hydraulic cylinder 17 is fixed to the top of the bottom plate 1 and located on one side of the winding roller 16, a U-shaped support 18 is fixed to the output shaft of the hydraulic cylinder 17 corresponding to the third rotating shaft 15, and the third rotating shaft 15 is rotatably connected to the U-shaped support 18, so as to facilitate the winding of the cut battery diaphragm and the disassembly and installation of the wound winding roller 16, which is convenient and labor-saving. When the winding roller 16 is disassembled, the hydraulic cylinder 17 is started and the hydraulic cylinder 17 is hydraulically driven. The pressure cylinder 17 drives the U-shaped support 18 to move downward, so that the U-shaped support 18 is separated from the third rotating shaft 15, and the winding roller 16 can be pulled out from the third rotating shaft 15; the second rotating shaft 8 and one end of the third rotating shaft 15 and one side of the second vertical plate 14 are fixed with pulleys 12, and a belt 24 is arranged between the two pulleys 12, so that the third rotating shaft 15 can be driven to rotate by the first motor 11 through the cooperation of the pulleys 12 and the belt 24; the outer wall of the third rotating shaft 15 is provided with a limiting block, and the inner side of the winding roller 16 is provided with a limiting groove that cooperates with the limiting block, so as to limit the winding roller 16, thereby facilitating the winding roller 16 to rotate through the third rotating shaft 15;

[0023] like Figure 3 As shown, a reeling roller 13 is provided on the other side of the top of the bottom plate 1, making the device more complete and integral, and facilitating the normal use of the device.

[0024] The working principle of the utility model is as follows: when in use, the lithium battery diaphragm on the unwinding roller 13 is first passed through the leveling roller 23, then passed between the squeezing roller 6 and the cutting roller 9, and then passed under another leveling roller 23, and finally wound on the winding roller 16, and the first motor 11 is started. The first motor 11 drives the cutting roller 9 to rotate, and the cutting roller 9 drives the cutting annular knife 10 to rotate, and cooperates with the squeezing roller 6 to squeeze the lithium battery diaphragm to fix the lithium battery diaphragm and cut the lithium battery diaphragm at the same time. At the same time, the first motor 11 drives one of the pulleys 12 to rotate through the second rotating shaft 8, and then cooperates with the other pulley 12 and the belt 24 to drive the third rotating shaft 15, and the third rotating shaft 15 drives the winding roller 16 to rotate, and the cut lithium battery diaphragm is wound up.

[0025] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. Lithium battery diaphragm cutting equipment, characterized by: The invention comprises a bottom plate (1), two first vertical plates (2) are fixed on the top of the bottom plate (1), a second rotating shaft (8) is rotatably mounted between the two first vertical plates (2), a cutting roller (9) is arranged on the outer wall of the second rotating shaft (8), a plurality of cutting annular knives (10) are arranged on the outer wall of the cutting roller (9) at equal intervals, a first motor (11) connected to the second rotating shaft (8) is arranged on the outer wall of the first vertical plate (2), and a first sliding groove (3) is provided on the outer walls of the two first vertical plates (2) facing each other and located above the cutting roller (9). A first slider (4) is slidably installed inside the first slide groove (3), a first spring (5) is arranged on the top of the first slider (4), and the top end of the first spring (5) is fixed to the inner wall of the first slide groove (3), an extrusion roller (6) is rotatably installed between the two first sliders (4), and a plurality of cutting grooves (7) are opened on the outer wall of the extrusion roller (6) corresponding to the cutting annular knife (10), a flattening component is arranged on the top of the bottom plate (1) and on both sides of the cutting roller (9), and a winding component is arranged on one side of the top of the bottom plate (1).

2. The lithium battery separator cutting device according to claim 1, characterized in that: The leveling component comprises two third vertical plates (19) which are fixed on the top of the bottom plate (1) and located on both sides of the cutting roller (9); the outer walls of the two third vertical plates (19) facing each other are each provided with a second slide groove (20); a second slider (21) is slidably installed inside the second slide groove (20); a leveling roller (23) is rotatably installed between the two second sliders (21) and located below the cutting roller (9); a second spring (22) is fixed on the top of the second slider (21), and the top end of the second spring (22) is fixed to the inner wall of the second slide groove (20).

3. The lithium battery diaphragm cutting device according to claim 1, characterized in that: The winding assembly comprises a second vertical plate (14) fixed to one side of the top of the base plate (1); a third rotating shaft (15) is rotatably installed through one side of the second vertical plate (14); a detachable winding roller (16) is provided on the outer wall of the third rotating shaft (15); a hydraulic cylinder (17) is fixed to the top of the base plate (1) and located on one side of the winding roller (16); a U-shaped bracket (18) is fixed to the output shaft of the hydraulic cylinder (17) corresponding to the third rotating shaft (15); and the third rotating shaft (15) is rotatably connected to the U-shaped bracket (18).

4. The lithium battery separator cutting device according to claim 1, characterized in that: A pulley (12) is fixed to one end of the second rotating shaft (8) and the third rotating shaft (15) and is located on one side of the second vertical plate (14), and a belt (24) is arranged between the two pulleys (12).

5. The lithium battery separator cutting device according to claim 1, characterized in that: A reeling roller (13) is provided on the other side of the top of the bottom plate (1).

6. The lithium battery separator cutting device according to claim 3, characterized in that: The outer wall of the third rotating shaft (15) is provided with a limiting block, and the inner side of the winding roller (16) is provided with a limiting groove that cooperates with the limiting block.

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