A lithium battery positive and negative electrode film cutting device

Abstract

The present invention relates to the technical field of slicers, and specifically to a device for cutting positive and negative electrode thin films of lithium batteries, comprising a control box, an electric control box being arranged on one side above the control box, a slice box being fixedly mounted on the upper surface of the control box, a slice mold assembly and a feeding assembly being arranged inside the slice box, and the beneficial effects are as follows: by arranging the slice mold assembly inside the slice box, the mold mounting plate is convenient for quick installation and disassembly, and is convenient for replacement according to the model of the electrode sheet, the upper mold and the lower mold are precisely positioned when cutting the motor sheet to avoid offset and error, and the cutting punch can be disassembled and replaced after long-term use, and a protective plate is arranged below the cutting punch to protect the electrode sheet to avoid accidental damage to the electrode sheet by installing a guide column, which not only improves the slicing efficiency of the electrode sheet, but also improves the quality of the sliced ​​product.

Description

Technical Field

[0001] The invention belongs to the technical field of slicers, and in particular relates to a device for cutting positive and negative electrode thin films of lithium batteries. Background Art

[0002] Lithium batteries are the most widely used mobile power sources on the market. The positive and negative electrode films of lithium batteries are one of the core components of lithium-ion batteries. They are carriers of active substances and are initially produced in rolls. During the battery assembly process, they need to be precisely cut to ensure the consistency of battery performance. Therefore, professional cutting devices are required for cutting. The slicing heads of existing slicers are fixed, so they can only cut one type of battery electrode. The battery electrodes come in various shapes and models, and different slicers need to be replaced when cutting different types of battery electrodes. This is more troublesome and increases the slicing cost of battery slicing.

[0003] The existing Chinese patent document with publication number CN117840764A proposes a sodium-ion battery electrode slicer, which solves the above problem by using mounting grooves, mounting plates and screws arranged on the side surface of the slicing roller to facilitate workers to replace blades when processing different types of battery electrodes. However, errors are prone to occur when the cutting knife directly cuts the electrode sheet.

[0004] Therefore, the present invention proposes a lithium battery positive and negative electrode thin film cutting device to solve the problem of easy error in cutting electrode sheets directly with a cutting knife in the prior art. A mold assembly that is easy to disassemble is used to accurately limit the cutting of the electrode sheets to reduce errors. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a lithium battery positive and negative electrode thin film cutting device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lithium battery positive and negative electrode thin film cutting device, comprising a control box, an electric control box is arranged on the upper side of the control box, a slicing box is fixedly installed on the upper surface of the control box, a slicing mold assembly and a feeding assembly are arranged inside the slicing box, and the slicing mold assembly includes a mold mounting plate, an upper mold, a return spring rod, a cutting punch and a lower mold.

[0007] Preferably, slicing mold mounting port baffles are hingedly installed on both sides of the frame of the slicing box, mold locating pins are provided at both ends of the mold mounting plates, locking screws are provided inside the mold locating pins, threaded holes matching the locking screws are provided above the two side frames of the slicing mold mounting port baffles, bottom mounting plates are symmetrically provided on the bottom upper surface of the slicing box, the bottom mounting plates are fixedly connected to the mold mounting plates by bolts, and a slicing finished product recovery box is provided between the bottom mounting plates.

[0008] Preferably, an upper mold is arranged above the mold mounting plate, a hanging module is fixedly installed in the upper middle part of the upper mold, a cutting cylinder is fixedly installed on the top of the slicing box, the punching head of the cutting cylinder is clamped with the inner wall of the hanging module, and return spring rods are fixedly installed at both ends of the upper surface of the mold mounting plate, and the upper end of the return spring rods is fixedly connected to the inner wall of the upper mold by bolts.

[0009] Preferably, a cutting punch is provided on the lower surface of the upper mold, mounting guide columns are symmetrically provided on the upper surface of the cutting punch, mounting guide holes matching the cutting punch are provided inside the upper mold, and a cutting knife is fixedly installed in the middle of the lower surface of the cutting punch.

[0010] Preferably, a bolt column is rotatably installed inside the installation guide column, a fixing plate is fixedly installed on the bottom of the inner wall of the cutting punch, a movable plate is slidably installed on the inner surface of the cutting punch, the inner wall of the movable plate is threadedly connected to the outer surface of the bolt column, a fixed hanging plate is movably installed between the movable plate and the fixed plate, and the fixed hanging plate is clamped with the installation guide hole.

[0011] Preferably, the lower mold is fixedly installed above the mold mounting plate by bolts, and L-shaped side push plates are symmetrically arranged on both sides of the upper surface of the lower mold, and a T-shaped side limit plate is fixedly installed on the inner side of the L-shaped side push plate, and a photoelectric sensor is arranged on the inner side of the T-shaped side limit plate, and an electric push rod is arranged on the outer side of the L-shaped side push plate, and the electric push rod is fixedly installed on the lower mold, and the output end of the electric push rod is fixed to the outer surface of the L-shaped side push plate.

[0012] Preferably, a movable pin is movably installed on the upper inner wall of the L-shaped side push plate, and a threaded spring piece is fixedly installed between the lower surfaces on both sides of the movable pin and the bottom of the inner wall of the lower mold, and a cylindrical extrusion pad is movably installed on the top of the T-shaped side limit plate, and an elastic bending piece is fixedly installed between the side surface of the cylindrical extrusion pad and the inner wall of the T-shaped side limit plate, and a slot matching the movable pin is arranged on the top of the T-shaped side limit plate.

[0013] Preferably, a protective plate is provided between the lower mold and the cutting punch, a card slot adapted to the cutting punch is provided above the protective plate, telescopic rods are fixedly installed on both sides of the upper surface of the protective plate, the telescopic rods are fixedly installed inside the mold mounting plate, an extrusion protrusion is provided on the lower surface of the protective plate, and a card slot adapted to the extrusion protrusion is provided above the L-shaped side push plate.

[0014] Preferably, the feeding assembly includes a feed roller mounting seat fixedly mounted on the inner side of the slicing box, a feed roller is rotatably mounted on the inner side above the feed roller mounting seat, a movable roller mounting frame is slidably mounted above the feed roller mounting seat, a limiting roller is rotatably mounted on the inner side of the movable roller mounting frame, an adjustment cylinder is fixedly mounted on the top of the feed roller mounting seat, the punching head of the adjustment cylinder is fixedly connected to the upper surface of the movable roller mounting frame by bolts, a feed servo motor is fixedly mounted on one side of the feed roller mounting seat, and the output shaft of the feed servo motor is fixedly connected to one end of the rotating shaft of the feed roller.

[0015] Preferably, a feeding platform is fixedly installed on one side of the slicing box close to the feeding roller by means of bolts, and a receiving platform is fixedly installed on one side of the slicing box close to the lower mold by means of bolts.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] By arranging a slicing mold assembly inside the slicing box, the mold mounting plate is convenient for quick installation and disassembly, and is convenient for replacement according to the model of the electrode sheet. The upper mold and the lower mold are precisely positioned when cutting the electrode sheet to avoid offset and error. Secondly, the cutting punch can be disassembled and replaced after long-term use. The protective plate is arranged under the cutting punch to protect the electrode sheet to avoid accidental damage to the electrode sheet by installing the guide column. Not only the slicing efficiency of the electrode sheet is improved, but also the quality of the finished sliced ​​product is improved, which solves the problem of easy error in cutting the electrode sheet directly with a cutting knife in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of one side of the present invention;

[0019] Figure 2 It is a schematic diagram of the overall structure of the other side of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the slice mold assembly of the present invention after installation;

[0021] Figure 4 It is a schematic diagram of the internal structure of the slice box of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the feeding assembly of the present invention;

[0023] Figure 6 It is a schematic structural diagram of a slicing mold assembly of the present invention;

[0024] Figure 7 It is a bottom view structural schematic diagram of the slicing mold assembly of the present invention;

[0025] Figure 8 This is a schematic diagram of the disassembled structure of the slicing mold assembly of the present invention;

[0026] Fig. 9 It is a schematic diagram of the structure of the cutting punch and the protective plate combination of the present invention when viewed from the bottom;

[0027] Fig.10 It is a schematic diagram of the front structure of the lower mold and the protective plate combination of the present invention;

[0028] Fig.11 It is a schematic diagram of the lower mold structure of the present invention;

[0029] Fig.12 It is a schematic diagram of the enlarged cross-sectional structure of point A of the present invention;

[0030] Fig.13 It is a schematic diagram of the enlarged structure of point B of the present invention;

[0031] Fig.14 It is a schematic diagram of the internal structure of the L-shaped side push plate of the present invention.

[0032] In the figure: 1. Control box; 2. Electric control box; 3. Slicing box; 31. Slicing die installation port baffle; 32. Feeding platform; 33. Receiving platform; 34. Bottom mounting plate; 341. Slicing finished product recovery box; 4. Cutting cylinder; 5. Slicing die assembly; 51. Die mounting plate; 511. Die positioning pin; 512. Locking screw; 52. Upper die; 521. Hanging module; 522. Installation guide hole; 53. Reset spring rod; 54. Cutting punch; 541. Installation guide column; 5411. Bolt column; 5412. Fixing Plate; 5413, movable plate; 5414, fixed hanging plate; 542, cutting knife; 543, stripping plate; 5431, spring; 55, protective plate; 551, telescopic rod; 552, extrusion convex block; 56, lower mold; 561, L-shaped side push plate; 5611, movable pin; 562, T-shaped side limit plate; 5621, cylindrical extrusion pad; 563, electric push rod; 6, feeding assembly; 61, feeding roller mounting seat; 62, feeding roller; 63, movable roller mounting bracket; 64, limit roller; 65, adjustment cylinder; 7, feeding servo motor. DETAILED DESCRIPTION

[0033] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Embodiment 1

[0035] See also Figures 1 to 14 The present invention provides a technical solution: comprising a control box 1, an electric control box 2 is arranged on one side above the control box 1, a slicing box 3 is fixedly installed on the upper surface of the control box 1, a slicing mold assembly 5 and a feeding assembly 6 are arranged inside the slicing box 3, the slicing mold assembly 5 comprises a mold mounting plate 51, an upper mold 52, a return spring rod 53, a cutting punch 54 and a lower mold 56, slicing mold mounting port baffles 31 are hingedly installed on both sides of the frame of the slicing box 3, mold locating pins 511 are arranged at both ends of the mold mounting plate 51, a locking screw 512 is arranged inside the mold locating pin 511, threaded holes matching the locking screw 512 are arranged above the frames on both sides of the slicing mold mounting port baffle 31, a bottom mounting plate 34 is symmetrically arranged on the upper surface of the bottom of the slicing box 3, and the bottom mounting plate 34 and the mold mounting plate 5 1 is fixedly connected by bolts, a finished slice recovery box 341 is arranged between the bottom mounting plates 34, an upper mold 52 is arranged above the mold mounting plate 51, a hanging module 521 is fixedly installed in the middle of the upper part of the upper mold 52, a cutting cylinder 4 is fixedly installed on the top of the slice box 3, the punching head of the cutting cylinder 4 is clamped with the inner wall of the hanging module 521, and reset spring rods 53 are fixedly installed at both ends of the upper surface of the mold mounting plate 51, and the upper end of the reset spring rod 53 is fixedly connected with the inner wall of the upper mold 52 by bolts, a cutting punch 54 is arranged on the lower surface of the upper mold 52, and a mounting guide column 541 is symmetrically arranged on the upper surface of the cutting punch 54, and a mounting guide hole 522 adapted to the cutting punch 54 is arranged inside the upper mold 52, and a cutting knife 542 is fixedly installed in the middle of the lower surface of the cutting punch 54;

[0036] In this embodiment, the control box 1 and the electric control box 2 cooperate to comprehensively control the slicing inside the slicing box 3 to realize automatic feeding, slicing and discharging. The feeding component 6 mainly plays the role of feeding. The slicing mold component 5 limits the slicing of the positive and negative electrode films of the lithium battery. The mold mounting plate 51 can be quickly installed in a fixed position inside the slicing box 3 through the mold positioning pin 511 and the locking screw 512. It only needs to open the slicing mold installation port baffle 31, put the mold mounting plate 51 in place, and then tighten the locking screw 512 to complete the locking to complete the installation. Anyway, disassembly is also convenient, which is convenient for adjusting the slicing mold according to the synchronous model of the battery. 52 is engaged with the punching head of the cutting cylinder 4 through the hanging module 521. When the cutting cylinder 4 is started, the upper mold 52 can be pressed down to make the cutting knife 542 complete the slicing of the positive and negative electrode films of the lithium battery. The sliced ​​products fall into the sliced ​​product recycling box 341 for collection. The bottom mounting plate 34 not only fixes the mold mounting plate 51, but also limits the slicing product recycling box 341. The upper mold 52 and the lower mold 56 cooperate to limit the positive and negative electrode films of the lithium battery to avoid errors in slicing by the cutting knife 542, thereby solving the problem of easy errors in cutting the electrode sheets directly with a cutting knife in the prior art.

[0037] Embodiment 2

[0038] See also Figures 1 to 14 On the basis of the first embodiment, in order to make the sliced ​​products easy to be peeled off and fall into the sliced ​​product recycling box 341 for collection, the present embodiment further proposes that a stripping plate 543 is arranged on the inner side of the cutting knife 542, and silicone protrusions are evenly distributed on the surface of the stripping plate 543, and a spring 5431 is fixedly installed between the upper surface of the stripping plate 543 and the lower surface of the cutting punch 54; in the present embodiment, the cutting cylinder 4 is pressed down to make the upper mold 52 fit the lower mold 56, and the cutting knife 542 slices the positive and negative electrode films of the lithium battery on the lower mold 56, and the stripping plate 543 is first pressed, and at the same time as the cutting knife 542 cuts, the stripping plate 543 is pushed by the elastic force of the spring 5431 to make the sliced ​​products peel off and fall into the sliced ​​product recycling box 341, and then the cutting cylinder 4 is lifted, and the upper mold 52 and the cutting punch 54 leave the lower mold 56 under the resetting action of the resetting spring rod 53.

[0039] Embodiment 3

[0040] See also Figures 1 to 14On the basis of the second embodiment, in order to enable the cutting knife 542 to be replaced after use and keep the cutting sharp, the present embodiment further proposes that a bolt column 5411 is rotatably installed inside the installation guide column 541, a fixing piece 5412 is fixedly installed at the bottom of the inner wall of the cutting punch 54, and a movable piece 5413 is slidably installed on the inner surface of the cutting punch 54, the inner wall of the movable piece 5413 is threadedly connected with the outer surface of the bolt column 5411, and a fixed hanging piece 5414 is movably installed between the movable piece 5413 and the fixed piece 5412, and the fixed hanging piece 5414 is clamped with the installation guide hole 522; in the present embodiment, when the cutting knife 542 needs to be replaced, the mold mounting plate 51 is first disassembled as a whole, and then the bolt column 5412 is rotated counterclockwise by a screwdriver. 5411 makes the movable piece 5413 slide up with the cooperation of the internal limit strip of the installation guide column 541. At this time, the fixed hanging piece 5414 will shrink until it is out of the inner slot of the installation guide hole 522. The bottom mounting plate 34 can be removed by directly pulling out the installation guide column 541, and then the new bottom mounting plate 34 is reinstalled to insert the slicing product recycling box 341 into the installation guide hole 522. Press the upper end of the slicing product recycling box 341 and use a screwdriver to turn the bolt column 5411 clockwise to make the movable piece 5413 slide down with the cooperation of the internal limit strip of the installation guide column 541. The fixed hanging piece 5414 is squeezed and protruded into the internal slot of the installation guide hole 522, completing the replacement of the bottom mounting plate 34, so that the cutting knife 542 remains sharp for cutting.

[0041] Embodiment 4

[0042] See also Figures 1 to 14 On the basis of the third embodiment, in order to ensure that the positive and negative electrode films of the lithium battery do not deviate on both sides during slicing, the present embodiment further proposes that the lower mold 56 is fixedly mounted on the upper side of the mold mounting plate 51 by bolts, and L-shaped side push plates 561 are symmetrically arranged on both sides of the upper surface of the lower mold 56, and a T-shaped side limit plate 562 is fixedly installed on the inner side of the L-shaped side push plate 561, and a photoelectric sensor is arranged on the inner side of the T-shaped side limit plate 562, and an electric push rod 563 is arranged on the outer side of the L-shaped side push plate 561, and the electric push rod 563 is fixedly mounted on the lower mold 56, The output end of the push rod 563 is fixed to the outer surface of the L-shaped side push plate 561, and a movable pin 5611 is movably installed on the upper inner wall of the L-shaped side push plate 561. Threaded springs are fixedly installed between the lower surfaces of both sides of the movable pin 5611 and the bottom of the inner wall of the lower mold 56. A cylindrical extrusion pad 5621 is movably installed above the T-shaped side limit plate 562, and an elastic bending piece is fixedly installed between the side surface of the cylindrical extrusion pad 5621 and the inner wall of the T-shaped side limit plate 562. A card slot adapted to the movable pin 5611 is arranged above the T-shaped side limit plate 562.

[0043] In this embodiment, a placement groove for the positive and negative electrode films of the lithium battery is provided above the lower mold 56, and L-shaped side push plates 561 are provided on both sides of the placement groove. The electric push rod 563 pushes the L-shaped side push plate 561 to move inward, so that the T-shaped side limit plate 562 contacts the edge of the positive and negative electrode films of the lithium battery. At this time, the sensor on the L-shaped side push plate 561 will feedback, so that the electric push rod 563 will stop immediately, completing the limitation of the edges of the positive and negative electrode films on both sides of the lithium battery to avoid offset during slicing. When slicing, the cutting cylinder 4 is pressed down to make the extrusion protrusion 552 on the protective plate 55 fit into the card groove inside the L-shaped side push plate 561, and the movable pin 5611 is pushed out to press down. The movable pin 5611 is pressed down to squeeze out the cylindrical extrusion pad 5621 in the T-shaped side limit plate 562, and the cylindrical extrusion pad 5621 presses the position above the edges of the positive and negative electrode films of the lithium battery, further playing the role of limiting and pressing, avoiding offset and improving the slicing quality.

[0044] Embodiment 5

[0045] See also Figures 1 to 14 On the basis of the fourth embodiment, in order to protect the positive and negative electrode films of the lithium battery, the present embodiment further proposes that a protective plate 55 is provided between the lower mold 56 and the cutting punch 54, a card slot matching the cutting punch 54 is provided above the protective plate 55, telescopic rods 551 are fixedly installed on both sides of the upper surface of the protective plate 55, the telescopic rods 551 are fixedly installed inside the mold mounting plate 51, an extrusion protrusion 552 is provided on the lower surface of the protective plate 55, and a card slot matching the extrusion protrusion 552 is provided above the L-shaped side push plate 561; in the present embodiment, the protective plate 55 is suspended below the cutting punch 54 by the telescopic rod 551 to protect the cutting knife 542, and when the cutting cylinder 4 is in a non-punching state, it is ensured that the cutting knife 542 does not contact the surface of the positive and negative electrode films of the lithium battery to avoid scratches and quality problems.

[0046] Embodiment 6

[0047] See also Figures 1 to 14On the basis of the fifth embodiment, in order to enable the positive and negative electrode films of the lithium battery to be automatically sliced, the present embodiment further proposes that the feeding assembly 6 includes a feeding roller mounting seat 61 fixedly mounted on the inner side of the slicing box 3, a feeding roller 62 is rotatably mounted on the inner side of the upper part of the feeding roller mounting seat 61, a movable roller mounting frame 63 is slidably mounted on the upper part of the feeding roller mounting seat 61, a limiting roller 64 is rotatably mounted on the inner side of the movable roller mounting frame 63, an adjusting cylinder 65 is fixedly mounted on the top of the feeding roller mounting seat 61, a punching head of the adjusting cylinder 65 is fixedly connected to the upper surface of the movable roller mounting frame 63 by bolts, a feeding servo motor 7 is fixedly mounted on one side of the feeding roller mounting seat 61, an output shaft of the feeding servo motor 7 is fixedly connected to one end of the rotating shaft of the feeding roller 62, a feeding platform 32 is fixedly mounted on the side of the slicing box 3 close to the feeding roller 62 by bolts, and a receiving platform 33 is fixedly mounted on the side of the slicing box 3 close to the lower mold 56 by bolts;

[0048] In this embodiment, the positive and negative electrode films of the lithium battery are placed on the feeding platform 32 and adjusted in position, and the positive and negative electrode films of the lithium battery are pushed into between the feeding roller 62 and the limiting roller 64, and the cylinder 65 is adjusted to work so that the movable roller mounting frame 63 is pressed down, and the distance between the feeding roller 62 and the limiting roller 64 is adjusted to be appropriate, and the feeding servo motor 7 is started to drive the feeding roller 62 to rotate intermittently, and with the cooperation of the movable roller mounting frame 63, the positive and negative electrode films of the lithium battery are pushed into the top of the lower mold 56 for automatic loading, and the slicing material is output through the receiving platform 33.

[0049] Embodiment 7

[0050] See also Figures 1 to 14 Based on the fifth embodiment, this embodiment further proposes a cutting method of a lithium battery positive and negative electrode thin film cutting device, comprising the following steps:

[0051] Step 1: open the slicing mold installation port baffle 31, put the mold installation plate 51 in place, tighten the mold locking screw 512 to complete the locking, and complete the installation of the slicing mold assembly 5;

[0052] Step 2: Place the positive and negative electrodes of the lithium battery on the feeding platform 32 and adjust the position, push the positive and negative electrodes of the lithium battery into between the feeding roller 62 and the limiting roller 64, adjust the cylinder 65 to press the movable roller mounting frame 63 downward, and adjust the distance between the feeding roller 62 and the limiting roller 64 to be appropriate;

[0053] Step three, start the feeding servo motor 7 to drive the feeding roller 62 to rotate intermittently, and with the cooperation of the movable roller mounting frame 63, push the positive and negative electrode films of the lithium battery into the top of the lower mold 56 for automatic loading. The cutting cylinder 4 is started to press the upper mold 52 downward, so that the cutting knife 542 completes the slicing of the positive and negative electrode films of the lithium battery. The sliced ​​products fall into the sliced ​​product recovery box 341 for collection, and the sliced ​​materials are output through the receiving platform 33.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery positive and negative electrode thin film cutting device, comprising a control box (1), an electric control box (2) is arranged on one side above the control box (1), and a slicing box (3) is fixedly mounted on the upper surface of the control box (1), characterized in that: A slicing mold assembly (5) and a feeding assembly (6) are arranged inside the slicing box (3). The slicing mold assembly (5) comprises a mold mounting plate (51) and a lower mold (56). Slicing mold mounting opening baffles (31) are hingedly mounted on both sides of the frame of the slicing box (3). Mold positioning pins (511) are arranged at both ends of the mold mounting plate (51). A mold locking screw (512) is arranged inside the mold positioning pin (511). Threaded holes matching the mold locking screw (512) are arranged above the two side frames of the slicing mold mounting opening baffle (31). An upper mold (52) is arranged above the mold mounting plate (51). Return springs are fixedly mounted on both ends of the upper surface of the mold mounting plate (51). The upper end of the return spring rod (53) is fixedly connected to the inner wall of the upper mold (52) by bolts, the lower surface of the upper mold (52) is provided with a cutting punch (54), the upper surface of the cutting punch (54) is symmetrically provided with a mounting guide column (541), the interior of the upper mold (52) is provided with a mounting guide hole (522) adapted to the cutting punch (54), a cutting knife (542) is fixedly installed in the middle of the lower surface of the cutting punch (54), the lower mold (56) is fixedly installed on the upper part of the mold mounting plate (51) by bolts, a bolt column (5411) is rotatably installed inside the mounting guide column (541), and a fixing plate is fixedly installed at the bottom of the inner wall of the cutting punch (54). (5412), a movable sheet (5413) is slidably mounted on the inner surface of the cutting punch (54), the inner wall of the movable sheet (5413) is threadedly connected to the outer surface of the bolt column (5411), a fixed hanging sheet (5414) is movably mounted between the movable sheet (5413) and the fixed sheet (5412), the fixed hanging sheet (5414) is clamped with the mounting guide hole (522), L-shaped side push plates (561) are symmetrically arranged on both sides of the upper surface of the lower mold (56), a T-shaped side limit plate (562) is fixedly mounted on the inner side of the L-shaped side push plate (561), a photoelectric sensor is arranged on the inner side of the T-shaped side limit plate (562), and an electric push rod (563) is arranged on the outer side of the L-shaped side push plate (561). ), the electric push rod (563) is fixedly mounted on the lower mold (56), the output end of the electric push rod (563) is fixed to the outer surface of the L-shaped side push plate (561), a movable pin (5611) is movably mounted on the upper inner wall of the L-shaped side push plate (561), and a threaded spring piece is fixedly mounted between the lower surfaces of both sides of the movable pin (5611) and the bottom of the inner wall of the lower mold (56), a cylindrical extrusion pad (5621) is movably mounted above the T-shaped side limit plate (562), an elastic bending piece is fixedly mounted between the side surface of the cylindrical extrusion pad (5621) and the inner wall of the T-shaped side limit plate (562), and a slot matching the movable pin (5611) is arranged above the T-shaped side limit plate (562).

2. A lithium battery positive and negative electrode thin film cutting device according to claim 1, characterized in that: A bottom mounting plate (34) is symmetrically arranged on the upper surface of the bottom of the slicing box (3); the bottom mounting plate (34) is fixedly connected to the mold mounting plate (51) by bolts; and a slicing product recovery box (341) is arranged between the bottom mounting plates (34).

3. A lithium battery positive and negative electrode thin film cutting device according to claim 2, characterized in that: A hanging module (521) is fixedly mounted in the middle of the upper part of the upper mold (52), a cutting cylinder (4) is fixedly mounted on the top of the slicing box (3), and a punch head of the cutting cylinder (4) is clamped with the inner wall of the hanging module (521).

4. A lithium battery positive and negative electrode thin film cutting device according to claim 1, characterized in that: A protective plate (55) is provided between the lower die (56) and the cutting punch (54); a slot matching the cutting punch (54) is provided above the protective plate (55); telescopic rods (551) are fixedly mounted on both sides of the upper surface of the protective plate (55); the telescopic rods (551) are fixedly mounted inside the die mounting plate (51); an extrusion protrusion (552) is provided on the lower surface of the protective plate (55); and a slot matching the extrusion protrusion (552) is provided above the L-shaped side push plate (561).

5. A lithium battery positive and negative electrode thin film cutting device according to claim 1, characterized in that: The feeding assembly (6) comprises a feeding roller mounting seat (61) fixedly mounted on the inner side of the slicing box (3); a feeding roller (62) is rotatably mounted on the inner side of the upper side of the feeding roller mounting seat (61); a movable roller mounting frame (63) is slidably mounted on the upper side of the feeding roller mounting seat (61); a limiting roller (64) is rotatably mounted on the inner side of the movable roller mounting frame (63); an adjusting cylinder (65) is fixedly mounted on the top of the feeding roller mounting seat (61); a punching head of the adjusting cylinder (65) is fixedly connected to the upper surface of the movable roller mounting frame (63) by bolts; a feeding servo motor (7) is fixedly mounted on one side of the feeding roller mounting seat (61); an output shaft of the feeding servo motor (7) is fixedly connected to one end of the rotating shaft of the feeding roller (62).

6. A lithium battery positive and negative electrode thin film cutting device according to claim 1, characterized in that: A feeding platform (32) is fixedly mounted on one side of the slicing box (3) close to the feeding roller (62) by means of bolts, and a receiving platform (33) is fixedly mounted on one side of the slicing box (3) close to the lower mold (56) by means of bolts.

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