Cathode membrane material compacting device

Abstract

The utility model relates to a cathode membrane material compacting device which comprises a base, a first compacting mechanism and a second compacting mechanism, and the first compacting mechanism and the second compacting mechanism are arranged on the base in a spaced mode. The two first compaction mechanisms are oppositely arranged and can move in the opposite direction or the back-to-back direction, the two first compaction mechanisms are used for pre-pressing the two sides of a membrane material, and the second compaction mechanism is used for extruding the whole membrane material. According to the utility model, by adopting a double-compaction mechanism, the step-by-step pre-compaction and integral compaction are realized. And the first compaction mechanism can quickly pre-press the two sides of the membrane material, so that the membrane material is preliminarily shaped, and a good foundation is provided for further compaction of the second compaction mechanism. By means of the step-by-step compaction mode, the overall compaction efficiency can be effectively improved, the production period is shortened, materials can be prevented from overflowing from the two sides of the membrane materials, material losses are reduced, and the material density is improved.

Description

Technical Field

[0001] The utility model relates to the field of battery production equipment, and particularly relates to a negative electrode film material compaction device. Background Art

[0002] When preparing the negative electrode material of a lithium battery, a first separator and a second separator need to be stacked on opposite sides of the negative electrode sheet respectively to form a negative electrode sheet with a film, and then the negative electrode sheet with a film is heated and compacted to improve its density and stability. During compaction in the actual production process, since the material coated on the negative electrode, such as graphite, is in a relatively loose state, the material will be extruded to both sides of the film during extrusion, easily causing the material to overflow to the sides and reducing the density of the material, thereby affecting the capacity of the battery. At the same time, the sides of the film need to be cut, resulting in loss of the film. Summary of the Utility Model

[0003] In view of this, the utility model provides a negative electrode film material compaction device that adopts a two-stage compaction method to avoid the material from overflowing to the sides.

[0004] The purpose of the utility model is achieved by the following technical solutions:

[0005] A negative electrode film material compaction device includes a base, a first compaction mechanism, and a second compaction mechanism. The first compaction mechanism and the second compaction mechanism are arranged on the base at intervals; the first compaction mechanism is two and arranged oppositely and can move towards or away from each other. The two first compaction mechanisms are used for pre-compacting both sides of the film, and the second compaction mechanism is used for extruding the whole film.

[0006] In the above technical solution, by adopting a double-compaction mechanism, the step-by-step compaction of pre-compaction and overall compaction is realized. The first compaction mechanism can quickly pre-compact both sides of the film, make it preliminarily shaped, and press the material at the edge of the film towards the middle, reducing the possibility of the material moving to both sides, avoiding the material from overflowing from both sides, and providing a good basis for the further compaction of the second compaction mechanism. This step-by-step compaction method can effectively improve the overall compaction efficiency, shorten the production cycle, avoid the material from overflowing from both sides of the film, reduce the loss of the material, and improve the material density.

[0007] Optionally, in a possible implementation manner, the first compaction mechanism includes a moving seat, two first roller assemblies arranged at intervals on the moving seat, a first adjustment assembly for adjusting the interval between the two first roller assemblies, and a first driving assembly. The moving seat is slidably arranged on the base, and the first driving assembly is used for driving the operation of one of the first roller assemblies.

[0008] In the above technical solution, the film material passes between two first pressing roller assemblies. The first adjusting assembly can precisely adjust the interval between the two first pressing roller assemblies to meet the compaction requirements of materials with different thicknesses and materials. This flexibility enables the compaction mechanism to be widely applied in various scenarios, improving the versatility and practicality of the equipment.

[0009] Optionally, in a possible implementation manner, the first pressing roller assembly includes a first movable block and a first roller shaft rotatably connected to the first movable block through a first guide shaft. A first sliding groove is provided on the moving seat, and the first movable block is clamped in the first sliding groove. The first adjusting assembly is connected to the two first movable blocks.

[0010] In the above technical solution, the first movable block can drive the first roller shaft to move in the first sliding groove, that is, the first roller shaft can rotate and move at the same time. Therefore, the distance between the two first roller shafts can be adjusted by adjusting the distance between the two first movable blocks, which can be achieved only through the first adjusting assembly, and the operation is simple and convenient.

[0011] Optionally, in a possible implementation manner, the first adjusting assembly includes a first screw rod rotatably arranged on the moving seat and a first turning handle provided at one end of the first screw rod. Two thread segments with opposite helix directions are provided on the first screw rod, and the two first movable blocks are respectively threadedly connected to the two thread segments on the first screw rod.

[0012] In the above technical solution, by rotating the first turning handle, the first screw rod can be rotated. Since two thread segments with opposite helix directions are provided on the first screw rod and are respectively threadedly connected to the two first movable blocks, the two first movable blocks can move synchronously but relatively, so as to realize the precise adjustment of the distance between the two first roller shafts. The adjustment method is simple and effective.

[0013] Optionally, in a possible implementation manner, the first driving assembly includes a first motor provided on the moving seat, a first main gear connected to the output end of the first motor, and a first driven gear meshed with the first main gear. The first driven gear is provided at one end of one of the first guide shafts.

[0014] In the above technical solution, the first driving assembly uses a gear transmission method to drive the rotation of the first roller shaft. On the one hand, due to the compact structure and small occupied space, the compactness of the whole equipment can be maintained, which is convenient for the layout and installation of the equipment. On the other hand, because the position of the first pressing roller assembly can be finely adjusted, and the gear meshing connection can have strong connection stability and meshing distance. When the distance between the main gear and the driven gear changes slightly, it will not affect their transmission effect, so it is more convenient to use.

[0015] Optionally, in a possible implementation, a plurality of guide rails are provided on the base, and the moving seat is slidably clamped on the guide rails.

[0016] In the above technical solution, by providing guide rails on the base, the moving seat can slide precisely along the path of the guide rails, ensuring the linearity and accuracy of the movement.

[0017] Optionally, in a possible implementation, the second compaction mechanism includes two relatively arranged fixed seats, two second roller assemblies spaced between the two fixed seats, a second adjustment assembly for adjusting the two second roller assemblies, and a second drive assembly for driving the operation of one of the second roller assemblies.

[0018] In the above technical solution, the film material passes between the two second roller assemblies, and the second adjustment assembly can precisely adjust the interval between the two second roller assemblies to adapt to the compaction requirements of materials with different thicknesses and materials. This flexibility enables the compaction mechanism to be widely applied in various scenarios, improving the versatility and practicality of the equipment. The second drive assembly only needs to drive the operation of one of the second roller assemblies, reducing energy consumption and maintenance costs.

[0019] Optionally, in a possible implementation, the second roller assembly includes a second roller shaft and two second movable blocks provided at both ends of the second roller shaft. The second roller shaft is rotatably connected to the second movable blocks through second guide shafts. Second chutes are provided on the fixed seats, and the second movable blocks are clamped in the second chutes; there are two second adjustment assemblies, and the two second adjustment assemblies are respectively connected to the two second movable blocks located on the same side of the two second roller shafts.

[0020] In the above technical solution, the second movable block can drive the second roller shaft to move in the second chute, that is, the first roller shaft can rotate and move at the same time. Two second movable blocks are correspondingly provided at both ends of one second roller shaft, that is, one second roller shaft is installed on two fixed seats through two second movable blocks respectively, so as to improve the balance of the second roller shaft during adjustment.

[0021] Optionally, in a possible implementation, the second adjustment assembly includes a second screw rod rotatably provided on the fixed seat and a second turning handle provided at one end of the second screw rod. Two thread segments with opposite helix directions are provided on the second screw rod, and the two second movable blocks located on the same side of the two second roller shafts are respectively threadedly connected to the two thread segments on the second screw rod.

[0022] In the above technical solution, by rotating the second turning handle, the second screw can be rotated. Since there are two thread segments with opposite helix directions on the second screw and they are respectively threadedly connected to two second movable blocks on the same fixed seat, the two second movable blocks can move synchronously but relatively, thereby realizing precise adjustment of the distance between the two second roller shafts.

[0023] Optionally, in a possible implementation manner, the second driving assembly includes a second motor disposed on the fixed seat, a second main gear connected to the output end of the second motor, and a second driven gear meshed with the second main gear, and the second driven gear is disposed at one end of one of the second guide shafts.

[0024] In the above technical solution, the structure of the second driving assembly is the same as that of the first driving assembly, and the second roller shaft is also driven by a gear transmission method, with stable operation and high transmission efficiency.

[0025] Compared with the prior art, the beneficial effects of the present utility model are:

[0026] The film material compaction device of the present utility model realizes the step-by-step pre-pressing and overall compaction by adopting a double compaction mechanism. The first compaction mechanism can quickly pre-press both sides of the film material to make it preliminarily shaped, and provides a good foundation for the further compaction of the second compaction mechanism. This step-by-step compaction method can effectively improve the overall compaction efficiency, shorten the production cycle, and can also prevent the material from overflowing from both sides of the film material, reduce material loss, and increase material density. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0028] Figure 1 It is a top view of the overall structure of an embodiment.

[0029] Figure 2 It is Figure 1 a cross-sectional view taken along the A-A direction in

[0030] Figure 3 It is Figure 1 a cross-sectional view taken along the B-B direction in

[0031] Reference numerals: 1 - base; 11 - guide rail; 2 - first compaction mechanism; 21 - moving seat; 211 - first chute; 22 - first roller assembly; 221 - first roller shaft; 222 - first movable block; 223 - first guide shaft; 23 - first adjustment assembly; 231 - first screw; 232 - first turning handle; 24 - first drive assembly; 241 - first motor; 242 - first main gear; 243 - first driven gear; 3 - second compaction mechanism; 31 - fixed seat; 311 - second chute; 32 - second roller assembly; 321 - second roller shaft; 322 - second movable block; 323 - second guide shaft; 33 - second adjustment assembly; 331 - second screw; 332 - second turning handle; 34 - second drive assembly; 341 - second motor; 342 - second main gear; 343 - second driven gear. Detailed implementation manners

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.

[0034] Please refer to Figure 1 , this embodiment provides a negative electrode film material compaction device, including a base 1, a first compaction mechanism 2, and a second compaction mechanism 3. The first compaction mechanism 2 and the second compaction mechanism 3 are arranged at intervals on the base 1; the first compaction mechanism 2 is two and arranged opposite to each other and can move towards or away from each other. The two first compaction mechanisms 2 are used for pre-pressing both sides of the film material, and the second compaction mechanism 3 is used for extruding the whole film material.

[0035] In this embodiment, by adopting a double-compaction mechanism, the step-by-step progress of pre-pressing and overall compaction is realized. The first compaction mechanism 2 can quickly pre-press both sides of the film material, making it initially shaped, and pressing the materials at the edges of the film material towards the middle, reducing the possibility of the materials moving to both sides, avoiding the materials overflowing from both sides, and providing a good foundation for the further compaction of the second compaction mechanism 3. This step-by-step compaction method can effectively improve the overall compaction efficiency, shorten the production cycle, and can also avoid the materials overflowing from both sides of the film material, reduce the material loss, and improve the material density.

[0036] In addition, since the two first compaction mechanisms 2 can move relative to each other, the distance between the two first compaction mechanisms 2 can be controlled according to actual requirements, that is, the extrusion depth on both sides of the film material can be selected, making it more flexible to use and adaptable to film materials of different widths.

[0037] Please refer to Figure 1 and Figure 2 , the first compaction mechanism 2 includes a moving seat 21, two first roller assemblies 22 spaced apart on the moving seat 21, a first adjustment assembly 23 for adjusting the spacing between the two first roller assemblies 22, and a first drive assembly 24. The moving seat 21 is slidably disposed on the base 1, and the first drive assembly 24 is used to drive the operation of one of the first roller assemblies 22. Among them, the moving seat 21 includes a bottom plate and a vertical plate. The bottom plate is parallel and attached to the base 1, and the vertical plate is perpendicular to the bottom plate. The two first roller assemblies 22 are vertically spaced.

[0038] During operation, the film material passes through between the two first roller assemblies 22. The first adjustment assembly 23 can precisely adjust the spacing between the two first roller assemblies 22 to meet the compaction requirements of materials with different thicknesses and materials. This flexibility enables the compaction mechanism to be widely used in various scenarios, improving the versatility and practicality of the equipment.

[0039] In this embodiment, the first roller assembly 22 includes a first movable block 222 and a first roller shaft 221 rotatably connected to the first movable block 222 through a first guide shaft 223. A first chute 211 is provided on the moving seat 21, and the first movable block 222 is clamped in the first chute 211. The first adjustment assembly 23 is connected to the two first movable blocks 222. Among them, the first chute 211 extends in the vertical direction.

[0040] The first movable block 222 of this embodiment can drive the first roller shaft 221 to move in the first chute 211, so that the first roller shaft 221 can rotate and move at the same time. Therefore, the distance between the two first roller shafts 221 can be adjusted by adjusting the distance between the two first movable blocks 222, which can be achieved only through the first adjustment assembly 23, and the operation is simple and convenient.

[0041] Specifically, the first adjustment assembly 23 includes a first screw rod 231 rotatably provided on the moving seat 21 and a first turning handle 232 provided at one end of the first screw rod 231. The first screw rod 231 passes through the first chute 211. Two thread sections with opposite helix directions are provided on the first screw rod 231, and the two first movable blocks 222 are respectively threadedly connected to the two thread sections on the first screw rod 231.

[0042] In this embodiment, by rotating the first turning handle 232, the first screw rod 231 can be rotated. Since there are two screw thread segments with opposite helix directions on the first screw rod 231 and they are respectively in threaded connection with the two first movable blocks 222, the two first movable blocks 222 can move synchronously but relatively, thereby realizing precise adjustment of the distance between the two first roller shafts 221. The adjustment method is simple and effective.

[0043] In addition, the first driving assembly 24 includes a first motor 241 provided on the moving seat 21, a first main gear 242 connected to the output end of the first motor 241, and a first driven gear 243 meshed with the first main gear 242. The first driven gear 243 is provided at one end of one of the first guide shafts 223.

[0044] The first driving assembly 24 of this embodiment adopts a gear transmission method to drive the rotation of the first roller shaft 221. On the one hand, due to its compact structure and small occupied space, it can maintain the compactness of the entire device, facilitating the layout and installation of the device. On the other hand, because the position of the first pressure roller assembly 22 can be finely adjusted, and gear meshing connection can have strong connection stability and meshing distance. When the distance between the main gear and the driven gear changes slightly, it will not affect their transmission effect, so it is more convenient to use.

[0045] It should be noted that a plurality of guide rails 11 are provided on the base 1 of this embodiment, and the moving seat 21 is slidably clamped on the guide rails 11. By providing the guide rails 11 on the base 1, the moving seat 21 can accurately slide along the path of the guide rails 11, ensuring the linearity and accuracy of the movement.

[0046] Please refer to Figure 1 and Figure 3 , the second compaction mechanism 3 includes two relatively arranged fixed seats 31, two second pressure roller assemblies 32 spaced between the two fixed seats 31, a second adjustment assembly 33 for adjusting the two second pressure roller assemblies 32, and a second driving assembly 34 for driving the operation of one of the second pressure roller assemblies 32. The structure of the fixed seat 31 is the same as that of the moving seat 21, and also includes a bottom plate and a vertical plate.

[0047] During operation, the film material passes through between the two second pressure roller assemblies 32. The second adjustment assembly 33 can accurately adjust the interval between the two second pressure roller assemblies 32 to meet the compaction requirements of materials with different thicknesses and materials. This flexibility enables the compaction mechanism to be widely applied in various scenarios, improving the versatility and practicality of the device. The second driving assembly 34 only needs to drive the operation of one of the second pressure roller assemblies 32, reducing energy consumption and maintenance costs.

[0048] In this embodiment, the second pressing roller assembly 32 includes a second roller shaft 321 and two second movable blocks 322 provided at both ends of the second roller shaft 321. The second roller shaft 321 is rotatably connected to the second movable blocks 322 through second guide shafts 323. A second chute 311 is provided on the fixed seat 31, and the second movable blocks 322 are clamped in the second chute 311. There are two second adjusting assemblies 33, and the two second adjusting assemblies 33 are respectively connected to the two second movable blocks 322 on the same side of the two second roller shafts 321.

[0049] Specifically, the second movable block 322 can drive the second roller shaft 321 to move in the second chute 311, so that the first roller shaft 221 can rotate and move at the same time. Two second movable blocks 322 are correspondingly provided at both ends of one second roller shaft 321, that is, one second roller shaft 321 is respectively installed on the two fixed seats 31 through the two second movable blocks 322, so as to improve the balance of the second roller shaft 321 during adjustment.

[0050] The second adjusting assembly 33 of this embodiment includes a second screw rod 331 rotatably provided on the fixed seat 31 and a second turning handle 332 provided at one end of the second screw rod 331. The second screw rod 331 is provided with two thread sections with opposite helix directions, and the two second movable blocks 322 on the same side of the two second roller shafts 321 are respectively threadedly connected to the two thread sections on the second screw rod 331.

[0051] By rotating the second turning handle 332, the second screw rod 331 can be rotated. Since the second screw rod 331 is provided with two thread sections with opposite helix directions and is respectively threadedly connected to the two second movable blocks 322 on the same fixed seat 31, the two second movable blocks 322 can move synchronously but relatively, so as to realize the precise adjustment of the distance between the two second roller shafts 321.

[0052] The second driving assembly 34 includes a second motor 341 provided on the fixed seat 31, a second main gear 342 connected to the output end of the second motor 341, and a second driven gear 343 meshed with the second main gear 342. The second driven gear 343 is provided at one end of one of the second guide shafts 323.

[0053] The second driving assembly 34 has the same structure as the first driving assembly 24, and the functions of the two are also the same. The second roller shaft 321 is also driven by a gear transmission method, with stable operation and high transmission efficiency.

[0054] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0055] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined.

[0056] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A compaction device for a negative electrode membrane material, characterized in that, It includes a base, a first compaction mechanism and a second compaction mechanism. The first compaction mechanism and the second compaction mechanism are arranged on the base at intervals; the first compaction mechanism consists of two relatively arranged ones and can move towards or away from each other. The two first compaction mechanisms are used for pre-compressing both sides of the film material, and the second compaction mechanism is used for extruding the whole film material.

2. The anode film material compaction device according to claim 1, wherein The first compaction mechanism includes a moving seat, two first roller assemblies arranged at intervals on the moving seat, a first adjustment assembly for adjusting the interval between the two first roller assemblies, and a first driving assembly. The moving seat is slidably arranged on the base, and the first driving assembly is used for driving the operation of one of the first roller assemblies.

3. The anode film material compaction device according to claim 2, characterized in that, The first roller assembly includes a first movable block and a first roller shaft rotatably connected to the first movable block through a first guide shaft. A first chute is provided on the moving seat, and the first movable block is clamped in the first chute. The first adjustment assembly is connected to the two first movable blocks.

4. The anode film material compaction device according to claim 3, wherein The first adjustment assembly includes a first screw rod rotatably arranged on the moving seat and a first turning handle arranged at one end of the first screw rod. Two screw threads with opposite helix directions are provided on the first screw rod, and the two first movable blocks are respectively threadedly connected to the two screw threads on the first screw rod.

5. The anode film material compaction device according to claim 3, characterized in that, The first driving assembly includes a first motor arranged on the moving seat, a first main gear connected to the output end of the first motor, and a first driven gear meshed with the first main gear. The first driven gear is arranged at one end of one of the first guide shafts.

6. The anode film material compaction device according to claim 2, wherein A number of guide rails are provided on the base, and the moving seat is slidably clamped on the guide rails.

7. The anode film material compaction device according to claim 1, characterized in that, The second compaction mechanism includes two relatively arranged fixed seats, two second roller assemblies arranged at intervals between the two fixed seats, a second adjustment assembly for adjusting the two second roller assemblies, and a second driving assembly. The second driving assembly is used for driving the operation of one of the second roller assemblies.

8. The anode film material compaction device according to claim 7, wherein The second roller assembly includes a second roller shaft and two second movable blocks arranged at both ends of the second roller shaft. The second roller shaft is rotatably connected to the second movable blocks through a second guide shaft. A second chute is provided on the fixed seat, and the second movable blocks are clamped in the second chute; there are two second adjustment assemblies, and the two second adjustment assemblies are respectively connected to the two second movable blocks on the same side of the two second roller shafts.

9. The negative electrode film material compaction device according to claim 8, characterized in that, The second adjustment assembly includes a second screw rod rotatably arranged on the fixed seat and a second turning handle arranged at one end of the second screw rod. Two screw threads with opposite helix directions are provided on the second screw rod, and the two second movable blocks on the same side of the two second roller shafts are respectively threadedly connected to the two screw threads on the second screw rod.

10. The anode film material compaction device according to claim 8, wherein The second driving assembly includes a second motor arranged on the fixed seat, a second main gear connected to the output end of the second motor, and a second driven gear meshed with the second main gear. The second driven gear is arranged at one end of one of the second guide shafts.

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