Edge cutting device for lithium battery production

Abstract

The utility model relates to a lithium battery production trimming device which comprises a base, a plurality of stand columns are arranged on the base, a top plate is connected to the stand columns, an air cylinder is arranged at the upper end of the top plate, and the output end of the air cylinder is vertically arranged downwards and connected with a trimming mechanism. The edge cutting mechanism comprises a fixing base, a cutter and an elastic trowelling assembly, the cutter and the elastic trowelling assembly are arranged on the fixing base, the fixing base is fixedly arranged at the output end of the air cylinder, and the elastic trowelling assembly is arranged on the outer side of the periphery of the cutter and used for abutting against and trowelling the lithium battery diaphragm; during edge cutting, the fixing seat is driven by the air cylinder to move downwards, during moving, the diaphragm is firstly flattened and pressed through the elastic flattening assembly, and finally the diaphragm is cut through the cutter, so that the problem of poor cutting effect caused by displacement of the diaphragm in the cutting process can be avoided, and the quality and efficiency of diaphragm edge cutting are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a trimming device for lithium battery production. Background Art

[0002] Lithium-ion batteries are currently the most advantageous rechargeable batteries. With the continuous promotion of their applications, the demand for positive electrode materials for lithium-ion batteries is also increasing. After lithium battery casting, the diaphragm needs to be trimmed, and trimming is mainly for the irregularities on both sides caused by defects on the edges during diaphragm production. This irregular edge needs to be cut off using a trimming device, but most of the existing trimming devices do not reinforce the diaphragm. The diaphragm will shift when it moves during cutting, which will result in poor cutting effect and still be uneven after cutting, seriously affecting production efficiency and quality. Utility Model Content

[0003] The present invention aims to solve one of the problems existing in the prior art to at least a certain extent. To this end, the present invention provides a trimming device for lithium battery production.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A trimming device for lithium battery production includes a base, a plurality of columns are arranged on the base, a top plate is connected to the plurality of columns, a cylinder is arranged on the upper end of the top plate, the output end of the cylinder is arranged vertically downward and is connected to a trimming mechanism, the trimming mechanism includes a fixed seat and a cutter and an elastic smoothing component arranged on the fixed seat, the fixed seat is fixed on the output end of the cylinder, the elastic smoothing component is arranged on the outside of the cutter, and is used to abut and smooth the lithium battery diaphragm.

[0006] In some embodiments, a rectangular groove is provided on the lower side of the fixing seat, the cutting knife is provided in the middle of the rectangular groove, and the blade of the cutting knife extends downward out of the rectangular groove.

[0007] In some embodiments, the elastic smoothing assembly includes a plurality of swing plates hingedly arranged in a rectangular groove. There are four swing plates, each of which is respectively arranged at the four inner walls of the rectangular groove. The lower end of each swing plate is inclined outward and a spring is connected between the corresponding inner wall.

[0008] In some embodiments, a cylinder is disposed at the lower end of the swing plate.

[0009] In some embodiments, a limiting portion for limiting the inward swinging of each swing plate is provided on the cutter, and when the swing plate abuts against the limiting portion, the lowest end of the cylinder is lower than the blade of the cutter.

[0010] In some embodiments, the fixing seat is guided up and down on the column.

[0011] In some embodiments, a cutting groove matching the cutting knife is provided on the base.

[0012] Compared with the prior art, the beneficial effect of the utility model is that during the trimming work, the fixed seat is driven downward by the cylinder. When moving, the diaphragm is first smoothed and pressed by the elastic smoothing component, and finally cut by the cutter, thereby avoiding the problem of poor cutting effect caused by the displacement of the diaphragm during the cutting process, and improving the quality and efficiency of the diaphragm trimming. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0014] Figure 2 It is one of the cross-sectional schematic diagrams of the utility model;

[0015] Figure 3 This is the second cross-sectional schematic diagram of the present utility model. DETAILED DESCRIPTION

[0016] The following specific implementation contents provide a variety of different embodiments or examples for implementing the utility model. Of course, these are only embodiments or examples and are not intended to be limiting. In addition, repeated reference numerals may be used in different embodiments, such as repeated numbers and / or letters. These repetitions are for the purpose of simply and clearly describing the utility model and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0017] The following figures and specific implementations further describe the utility model: Figure 1-Figure 3 A trimming device for lithium battery production shown in the figure includes a base 1, a plurality of columns 2 are arranged on the base 1, a top plate 3 is connected to the plurality of columns 2, a cylinder 4 is arranged on the upper end of the top plate 3, the output end of the cylinder 4 is arranged vertically downward and is connected to a trimming mechanism, the trimming mechanism includes a fixed seat 5 and a cutter 6 and an elastic smoothing component arranged on the fixed seat 5, the fixed seat 5 is fixed on the output end of the cylinder 4, and the elastic smoothing component is arranged on the outside of the cutter 6, and is used to press and smooth the lithium battery diaphragm.

[0018] In the utility model, during the trimming operation, the fixed seat 5 is driven downward by the cylinder 4. During the movement, the diaphragm is firstly smoothed and pressed by the elastic smoothing component, and finally the cutting is performed by the cutter 6. This can avoid the problem of poor cutting effect caused by the displacement of the diaphragm during the cutting process, and improve the quality and efficiency of the diaphragm trimming.

[0019] In order to improve the stability of the fixing seat 5 and the cutter 6 when they move up and down, the fixing seat 5 is guided up and down on the column 2.

[0020] See also Figure 2-3 As shown, a rectangular groove 21 is provided at the lower side of the fixing seat 5 , the cutter 6 is provided at the middle of the rectangular groove 21 , and the blade of the cutter 6 extends downward out of the rectangular groove 21 .

[0021] Furthermore, the elastic smoothing component includes a plurality of swing plates 31 hingedly arranged in the rectangular groove 21. There are four swing plates 31, which are respectively arranged at the four inner walls of the rectangular groove 21. The lower end of each swing plate 31 is inclined outward and a spring 32 is connected between the corresponding inner wall. A cylinder 41 is arranged at the lower end of the swing plate 31.

[0022] The cutter 6 is provided with a limiting portion 51 for limiting the inward swinging of each swing plate 31 . When the swing plate 31 abuts against the limiting portion 51 , the lowest end of the cylinder 41 is lower than the blade of the cutter 6 .

[0023] The base 1 is provided with a cutting groove 71 which matches the cutting knife 6 .

[0024] When the swing plate 31 is in the initial state, the elastic force of the spring 32 makes the swing plate 31 abut against the limit portion 51, and the swing plate 31 remains in an outwardly inclined state. During operation, the cylinder 4 works to drive the fixed seat 5, the cutter 6 and the swing plate 31 to move downward. First, the cylinder 41 at the lower end of the swing plate 31 presses against the diaphragm, and the fixed seat 5 continues to press downward. Since the swing plate 31 is in an inclined state, the swing plate 31 drives the cylinder 41 to swing outward, thereby smoothing the diaphragm, and finally cutting is performed by the cutter 6. The problem of poor cutting effect caused by the displacement of the diaphragm during the cutting process is avoided, and the quality and efficiency of the diaphragm edge cutting are improved.

[0025] In conjunction with the accompanying drawings and the above display and description of the basic principles and main features of the utility model as well as the advantages of the utility model, technical personnel in this industry should understand that the utility model is not limited to the above embodiments, and the above embodiments and descriptions are only for illustrating the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements shall fall within the scope of the utility model to be protected, and the scope of protection of the utility model shall be defined by the attached claims and their equivalents.

Claims

1. A trimming device for lithium battery production, comprising a base (1), a plurality of columns (2) being arranged on the base (1), a top plate (3) being connected to the plurality of columns (2), a cylinder (4) being arranged at the upper end of the top plate (3), an output end of the cylinder (4) being arranged vertically downward and connected to a trimming mechanism, characterized in that: The trimming mechanism comprises a fixed seat (5), a cutter (6) and an elastic smoothing component arranged on the fixed seat (5); the fixed seat (5) is fixed on the output end of the cylinder (4); the elastic smoothing component is arranged on the outer side around the cutter (6) and is used to press and smooth the lithium battery diaphragm.

2. A trimming device for lithium battery production according to claim 1, characterized in that: A rectangular groove (21) is provided on the lower side of the fixing seat (5), the cutting knife (6) is arranged in the middle of the rectangular groove (21), and the blade of the cutting knife (6) extends downward out of the rectangular groove (21).

3. A trimming device for lithium battery production according to claim 2, characterized in that: The elastic smoothing component comprises a plurality of swing plates (31) hingedly arranged in a rectangular groove (21), wherein four swing plates (31) are provided and are respectively arranged at four inner walls of the rectangular groove (21), and the lower end of each swing plate (31) is arranged to be inclined outward and a spring (32) is connected between the corresponding inner wall.

4. A trimming device for lithium battery production according to claim 3, characterized in that: A cylinder (41) is provided at the lower end of the swing plate (31).

5. A trimming device for lithium battery production according to claim 4, characterized in that: The cutter (6) is provided with a limiting portion (51) for limiting the inward swinging of each swing plate (31); when the swing plate (31) abuts against the limiting portion (51), the lowest end of the cylinder (41) is lower than the blade of the cutter (6).

6. The trimming device for lithium battery production according to claim 1, characterized in that: The fixing seat (5) is guided up and down on the column (2).

7. The trimming device for lithium battery production according to claim 1, characterized in that: The base (1) is provided with a cutting groove (71) that matches the cutting knife (6).

Images