Pressing and shaping device for lithium battery pole piece processing

Abstract

The utility model discloses a material pressing and shaping device for processing a lithium battery pole piece, which comprises a bottom frame, two vertical side frames arranged on the surface of the bottom frame in parallel at an interval, a flowing platform horizontally arranged between the middle parts of the two side frames, a rotatable lower rotating roller and an upper rotating roller correspondingly arranged above the lower rotating roller, the shaft end of the upper rotating roller is rotatably connected in a bearing seat, the bearing seat is installed in an auxiliary seat in a vertical sliding mode, the auxiliary seat is fixedly arranged on the side frame, and a compression spring is arranged between the top of the bearing seat and the auxiliary seat; a first mounting block and a second mounting block which are arranged up and down are arranged between the front portions of the two side frames, the first mounting block and the second mounting block are connected through two connecting guide shafts, the connecting guide shafts are movably sleeved with pressing blocks, and spring pieces are connected between the pressing blocks and the first mounting block. The device is simple to operate, can perform pre-shaping and secondary shaping, improves the working efficiency of shaping, is good in shaping stability, and ensures the quality of the shaped battery cell pole piece.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium ion battery manufacturing, in particular to a material pressing and shaping device for processing lithium battery pole pieces. Background Art

[0002] Lithium-ion batteries have the advantages of high energy density, high operating voltage, light weight, small size, good safety and environmental protection. They have a wide range of application scenarios in portable weapons, power tools and electric transportation power supply. The battery cell electrode is a component of the lithium-ion battery. The size of the battery cell electrode in different lithium-ion batteries is different.

[0003] At present, the vast majority of companies in the lithium battery manufacturing industry use non-continuous automated operations in the film making and winding processes, that is, the film making machine and the winding machine are independent operating units. Affected by the design structure of the electrode, after the electrode is operated by the film making equipment, the single-sided electrode that is coated only on one side will show obvious bending. The bending of the electrode will have an adverse effect on a series of operations such as electrode picking, placement, and winding, affect the winding quality, increase the chance of core damage and dislocation, and thus increase the probability of battery safety hazards.

[0004] Most existing methods for shaping battery cell electrodes are done manually, where workers use tools to press the deformed parts to achieve the shaping effect. However, firstly, it is troublesome for workers to use the tools, and the steps are cumbersome, which reduces the efficiency of the shaping process. Secondly, workers cannot control the pressing force well when using the tools, making it difficult to ensure the quality of the battery cell electrodes after shaping. Utility Model Content

[0005] The purpose of the present invention is to provide a material pressing and shaping device for processing lithium battery pole pieces, so as to solve the problems mentioned in the above background technology.

[0006] To achieve the above purpose, the present invention adopts the following contents:

[0007] The utility model provides a material pressing and shaping device for processing lithium battery pole pieces, which includes a base frame, two vertical side frames are arranged parallel to each other on the surface of the base frame, a flow platform is horizontally arranged between the middle parts of the two side frames, a rotatable lower roller is further arranged between the two side frames, an upper roller is correspondingly arranged above the lower roller, the shaft end of the upper roller is rotatably connected to a bearing seat, the bearing seat is installed in an auxiliary seat in a manner that can slide up and down, the auxiliary seat is fixed to the side frame, a compression spring is arranged between the top of the bearing seat and the auxiliary seat, and under the action of the compression spring, the upper roller is downwardly moved into contact with the lower roller;

[0008] An upper mounting plate and a lower mounting plate are provided between the front portions of the two side frames, a first mounting block is fixedly provided on the upper mounting plate, and a second mounting block is fixedly provided on the lower mounting plate, the first mounting block and the second mounting block are connected via two connecting guide shafts, and a pressure block is movably provided on the connecting guide shaft, a spring member is connected between the pressure block and the first mounting block, and under the action of the spring member, the pressure block contacts the second mounting block downward.

[0009] According to the present invention, a press-forming device for processing lithium battery pole pieces is provided. A horizontal intermediate plate is disposed between the lower rotating roller and the lower mounting plate. A flattening plate is also disposed between the two side frames and positioned above the intermediate plate. A gap is left between the bottom end surface of the flattening plate and the surface of the intermediate plate. This design allows the pole pieces to be brought closer to a plane by the action of the intermediate plate and the flattening plate before flowing out of the surface of the flow platform and entering between the first and second mounting blocks. This prevents wrinkles in the pole pieces during transfer and improves the effectiveness of subsequent secondary shaping.

[0010] According to the present invention, a material pressing and shaping device for processing lithium battery pole pieces is provided. The auxiliary seat is provided with a vertical slot, and the bearing seat is slidably mounted within the slot in a snap-fit ​​manner. A compression spring is provided between the top of the bearing seat and the upper end of the inner wall of the slot, and the compression spring is always in a compressed state. This design allows the bearing seat to move freely up and down within the slot, and under the compression of the compression spring, the bearing seat is constantly subjected to a downward squeezing force, forcing the upper roller downward toward the lower roller, thereby flattening the pole piece between the upper and lower rollers.

[0011] Furthermore, a prying frame is provided between the two auxiliary seats, comprising a first rod rotatably connected to the auxiliary seat and a second rod connecting the two first rods, with the lower portion of the first rod being located below the shaft of the upper roller. Thus, through the design of the prying frame, a person manually presses down on the second rod, causing the first rod to rotate, thereby causing the distal end of the first rod to tilt upward. As the first rod tilts upward, it pushes the axial end of the upper roller upward, separating the upper and lower rollers and facilitating the passage of the pole piece between the upper and lower rollers.

[0012] According to the present invention, a press-forming device for processing lithium battery pole pieces is provided. The surface of the flow platform is provided with spaced-apart limit plates along its length. This design prevents the pole pieces from shifting left and right during transport, ensuring accurate positioning of the pole pieces during transport.

[0013] The utility model provides a kind of material pressing shaping device for lithium battery pole piece processing, rotatably be provided with the feeding roller of being at the flow platform side between the two side frames.

[0014] Further, the upper roller surface of the feeding roller, the surface of the flow platform, the upper roller surface of the lower rotating roller and the surface of the second mounting block are on the same horizontal plane. The pole piece as a whole can be on the same horizontal plane during shaping, without height difference.

[0015] Compared with the prior art, the utility model has the following technical effects: the utility model has simple structure and reasonable design. The pole piece can be smoothly conveyed by the flow platform. The pole piece passes between the upper rotating roller and the lower rotating roller. Due to the action of the compression spring, the upper rotating roller can be in elastic compression contact with the lower rotating roller, so as to effectively flatten the raised parts on the pole piece, play a pre-flattening role, and then the pole piece passes between the first mounting block and the second mounting block. Due to the action of the spring member, the first mounting block can be in elastic compression contact with the second mounting block, so as to shape the pole piece. The device is easy to operate, has two shaping stations, and can perform pre-shaping and secondary shaping, thereby improving the shaping efficiency. The device has good shaping stability, and can ensure the quality of the shaped pole piece. BRIEF DESCRIPTION OF DRAWINGS

[0016] The specific embodiments of the utility model will be further described in detail below with reference to the drawings.

[0017] Figure 1 is a top view schematic diagram of the material pressing shaping device for lithium battery pole piece processing according to the utility model embodiment;

[0018] Figure 2 is a sectional view schematic diagram of the material pressing shaping device for lithium battery pole piece processing according to the utility model embodiment;

[0019] Figure 3 is an installation schematic diagram between the upper rotating roller and the auxiliary seat according to the utility model embodiment;

[0020] 1-base frame, 2-flow platform, 3-lower rotating roller, 4-upper rotating roller, 5-auxiliary seat, 6-upper mounting plate, 7-lower mounting plate, 8-intermediate plate body, 9-prying frame, 10-feeding roller, 11-side frame, 21-limiting plate, 41-bearing seat, 51-compression spring, 52-slotted guide, 61-first mounting block, 62-connection guide shaft, 63-spring member, 71-second mounting block, 72-pressing block, 81-flat pressing plate, 91-first rod body, 92-second rod body. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the present invention, the present invention is further described below in conjunction with preferred embodiments. Those skilled in the art should understand that the following specific description is illustrative rather than restrictive and should not limit the scope of protection of the present invention.

[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0023] like Figures 1 to 3 As shown. The embodiment of the present utility model provides a pressing and shaping device for processing lithium battery pole pieces, comprising a base frame 1, two vertical side frames 11 are arranged parallel to and spaced apart on the surface of the base frame 1, a flow platform 2 is arranged horizontally between the middle parts of the two side frames 11, and a rotatable lower roller 3 is also arranged between the two side frames 11. The lower roller 3 is located on the front side of the flow platform 2, and an upper roller 4 is arranged above the lower roller 3. The shaft end of the upper roller 4 is rotatably connected to a bearing seat 41, and the bearing seat 41 is installed in an auxiliary seat 5 in a manner that can slide up and down. The auxiliary seat 5 is fixed to the side frame 11, and a compression spring 51 is arranged between the top of the bearing seat 41 and the auxiliary seat 5. Under the action of the compression spring 51, the upper roller 4 is downwardly moved to contact the lower roller 3.

[0024] An upper mounting plate 6 and a lower mounting plate 7 are provided between the front portions of the two side frames 11, that is, the upper mounting plate and the lower mounting plate are also located in front of the lower rotating roller. A first mounting block 61 is fixed on the upper mounting plate 6, and a second mounting block 71 is fixed on the lower mounting plate 7. The first mounting block 61 and the second mounting block 71 are connected by two connecting guide shafts 62, and a pressure block 72 is movably sleeved on the connecting guide shaft 62. A spring member 63 is connected between the pressure block 72 and the first mounting block 61. Under the action of the spring member 63, the pressure block 72 moves downward to contact the second mounting block 71.

[0025] During use: the electrode can be smoothly transported through the flow platform 2, and the electrode passes between the upper roller 4 and the lower roller 3. Due to the action of the compression spring 51, the upper roller 4 can elastically press downward with the lower roller 3 to effectively flatten and shape the raised part of the electrode, playing a role of pre-flattening. Then the electrode passes between the first mounting block 61 and the second mounting block 71. Due to the action of the spring member 63, the first mounting block 61 can elastically press downward with the second mounting block 71 to shape the electrode. The device is simple to operate and has two shaping stations for pre-shaping and secondary shaping, which improves the shaping work efficiency. The shaping stability of the device is good, ensuring the quality of the battery cell electrode after shaping.

[0026] In this embodiment, a horizontal intermediate plate 8 is disposed between the lower rotating roller 3 and the lower mounting plate 7. A flattening plate 81 is also disposed between the two side frames 11, positioned above the intermediate plate 8. A gap is left between the bottom end surface of the flattening plate 81 and the surface of the intermediate plate 8. This design ensures that the electrode sheets are brought closer to a flat surface by the action of the intermediate plate and the flattening plate before flowing out of the surface of the flow platform and entering between the first and second mounting blocks. This prevents wrinkles in the electrode sheets during transfer and improves the effectiveness of subsequent secondary shaping.

[0027] In this embodiment, the auxiliary seat 5 is provided with a vertical slot 52, into which the bearing seat 41 is slidably mounted. A compression spring 51 is positioned between the top of the bearing seat 41 and the upper end of the inner wall of the slot 52. The compression spring 51 is always compressed. This design allows the bearing seat to move freely up and down within the slot. The compression of the compression spring exerts a constant downward pressure on the bearing seat, forcing the upper roller downward toward the lower roller, thereby flattening the pole piece between the upper and lower rollers.

[0028] Furthermore, a pry frame 9 is provided between the two auxiliary seats 5. The pry frame 9 includes a first rod 91 rotatably connected to the auxiliary seat 5 and a second rod 92 connecting the two first rods 91. The lower portion of the first rod 91 is located below the shaft of the upper roller 4. In this way, through the design of the pry frame, a person manually presses down the second rod to rotate the first rod, thereby causing the end of the first rod to tilt upward. During the process of the first rod tilting, it will push up the shaft end of the upper roller, realizing the separation of the upper roller and the lower roller, making it easier for the pole piece to pass between the upper roller and the lower roller.

[0029] In this embodiment, the surface of the flow platform 2 is provided with spaced apart limit plates 21 along its length. This design ensures that the electrode will not deviate left or right when being transported on the surface of the flow platform, thus ensuring the accuracy of the electrode position during the transport process.

[0030] In this embodiment, a feed roller 10 is rotatably provided between the two side frames 11 on one side of the flow platform 2. This facilitates the smooth transition of the electrode to the surface of the flow platform and avoids the problem of accidental scraping between the electrode and the outer side of the flow platform, which affects the quality of the electrode.

[0031] It should be noted that the upper roller surface of the feed roller 10, the surface of the flow platform 2, the upper roller surface of the lower rotating roller 3, and the surface of the second mounting block 71 are on the same horizontal plane. This ensures that the entire electrode can be on the same horizontal plane without any height difference during the shaping process.

[0032] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A material pressing and shaping device for processing lithium battery pole pieces, characterized in that: The invention comprises a base frame, two vertical side frames are arranged on the surface of the base frame in parallel and at intervals, a flow platform is arranged horizontally between the middle parts of the two side frames, a rotatable lower roller is further arranged between the two side frames, an upper roller is arranged above the lower roller, the shaft end of the upper roller is rotatably connected to a bearing seat, the bearing seat is installed in an auxiliary seat in a manner that can slide up and down, the auxiliary seat is fixed to the side frame, a compression spring is arranged between the top of the bearing seat and the auxiliary seat, and under the action of the compression spring, the upper roller is moved downward to contact the lower roller; An upper mounting plate and a lower mounting plate are provided between the front portions of the two side frames, a first mounting block is fixedly provided on the upper mounting plate, and a second mounting block is fixedly provided on the lower mounting plate, the first mounting block and the second mounting block are connected via two connecting guide shafts, and a pressure block is movably provided on the connecting guide shaft, a spring member is connected between the pressure block and the first mounting block, and under the action of the spring member, the pressure block contacts the second mounting block downward.

2. The pressing and shaping device for processing lithium battery pole pieces according to claim 1, characterized in that: A horizontal intermediate plate is provided between the lower rotating roller and the lower mounting plate, and a flat pressing plate is provided above the intermediate plate between the two side frames, with a gap being left between the bottom end surface of the flat pressing plate and the surface of the intermediate plate.

3. The pressing and shaping device for processing lithium battery pole pieces according to claim 1, characterized in that: A vertical sliding groove is provided on the auxiliary seat, and the bearing seat is slidably installed in the sliding groove in a snap-fit ​​manner. A compression spring is provided between the top end of the bearing seat and the upper end of the inner wall of the sliding groove, and the compression spring is always in a compressed state.

4. The pressing and shaping device for processing lithium battery pole pieces according to claim 3, characterized in that: A pry frame is provided between the two auxiliary seats. The pry frame includes a first rod body rotatably connected to the auxiliary seat and a second rod body connecting the two first rod bodies. The lower portion of the first rod body is located below the upper roller shaft.

5. The pressing and shaping device for processing lithium battery pole pieces according to claim 1, characterized in that: The surface of the flow platform is provided with limit plates spaced left and right along its length direction.

6. The pressing and shaping device for processing lithium battery pole pieces according to claim 1, characterized in that: A feeding roller located on one side of the flow platform is rotatably arranged between the two side frames.

7. The pressing and shaping device for processing lithium battery pole pieces according to claim 6, characterized in that: The upper roller surface of the feeding roller, the surface of the flow platform, the upper roller surface of the lower rotating roller, and the surface of the second mounting block are on the same horizontal plane.

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