A cutting knife structure of a battery aluminum plastic film

Abstract

The utility model discloses a cutting knife structure of battery aluminium plastic film, include: upper cutting tool, the upper cutting tool includes upper tool rest seat and upper cutting knife, upper tool rest seat with upper cutting knife is connected, the side of upper cutting knife is provided with the mouth of a knife for cutting aluminium plastic film, the mouth of a knife is set up to a certain angle, and the cross section of mouth of a knife is acute angle, the utility model discloses a mouth of a knife of upper cutting knife is set up to 45 degree bevel setting, to improve the sharp degree of mouth of a knife, when upper cutting knife carries out cutting to aluminium plastic film, will not produce the sticking and pulling aluminium plastic film of drawing and lead to vacuum alarm.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production technology, and in particular to a cutting structure for aluminum-plastic film in batteries. Background Technology

[0002] Lithium-ion batteries are favored by the electronics market due to their green and environmentally friendly characteristics, high energy density, and recyclability, and are widely used in electronic devices, electric toys, new energy vehicles, and other technological fields. A lithium-ion battery consists of a lithium-ion cell, electrodes, and a casing encasing the cell, with the casing being made of stamped aluminum-plastic film. During the aluminum-plastic film processing, a cutting device is needed to cut the film. Typically, the cutting blade has a 90° right-angle design, resulting in a dull blade and short lifespan. Even slight wear can cause the nylon layer of the aluminum-plastic film to stick, tearing off the nylon layer during separation after cutting and triggering an alarm. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a cutting structure for battery aluminum-plastic film.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A cutting structure for a battery aluminum-plastic film includes: an upper cutter, the upper cutter including an upper blade holder and an upper cutter, the upper blade holder being connected to the upper cutter, and the side of the upper cutter being provided with a cutting edge for cutting the aluminum-plastic film, the cutting edge being set at a certain angle, and the cross-section of the cutting edge being an acute angle.

[0006] In one embodiment, the upper blade holder and the upper cutting blade are welded together.

[0007] In one embodiment, the upper cutter is arranged along the length direction of the upper cutter holder, and the length of the upper cutter ranges from 400 to 410 mm.

[0008] In one embodiment, the upper cutter has a cutting edge on both sides, the cutting edge is set at a 45° angle, and the upper cutter has a cutting angle on both sides, the cutting angle is set at a 90° angle, and the cutting edge is located on one side of the cutting angle.

[0009] In one embodiment, the length of the chamfer is 9mm and the width of the chamfer is 3mm.

[0010] In one embodiment, the upper blade holder and the upper cutting blade are made of steel or ceramic.

[0011] In one embodiment, the upper tool holder is provided with a plurality of through holes and countersunk holes on both the front and back sides. Each through hole and each countersunk hole forms a group, and each group of through holes and countersunk holes is evenly distributed on both the front and back sides of the upper tool holder.

[0012] In one embodiment, the diameter of the through hole is 6.6 mm, and the countersunk hole is located around the through hole, with a diameter of 11 mm and a depth of 6.5 mm.

[0013] Compared with the prior art, the present invention has at least the following advantages:

[0014] 1. The cutting structure of the battery aluminum-plastic film of this utility model sets the blade edge of the upper cutting blade at a 45° angle to improve the sharpness of the blade edge. When the upper cutting blade cuts the aluminum-plastic film, it can cut quickly without sticking. This avoids tearing off the nylon layer of the aluminum-plastic film due to adhesion, which would cause a vacuum alarm, and also improves the service life of the upper cutting blade.

[0015] 2. The cutting structure of the battery aluminum-plastic film of this utility model is made of tungsten steel or high-purity alumina ceramic material to make the upper blade holder and upper cutting blade, so as to improve the wear resistance and service life of the upper cutting blade. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below.

[0017] Figure 1 A schematic diagram of the cutting structure of a battery aluminum-plastic film provided by this utility model;

[0018] Figure 2 A side view of the cutting structure of a battery aluminum-plastic film provided by this utility model.

[0019] Figure descriptions: 10. Upper cutting tool; 11. Upper blade holder; 111. Through hole; 112. Countersunk hole; 12. Upper cutting blade; 121. Blade edge; 122. Cutting corner. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be given below with reference to the accompanying drawings.

[0021] A cutting structure for a battery aluminum-plastic film, as shown in the reference. Figure 1 and Figure 2The device includes an upper cutter 10, which comprises an upper blade holder 11 and an upper cutter 12. The upper blade holder 11 is connected to the upper cutter 12, and the upper cutter 12 has a cutting edge 121 on its side for cutting aluminum-plastic film. The cutting edge 121 is set at a certain angle, and the cross-section of the cutting edge 121 is acute to improve the sharpness of the cutting edge 121, enabling rapid cutting of the aluminum-plastic film without adhesion. It should be noted that the upper cutter 12 is usually used in conjunction with a lower cutter. The upper cutter 12 reciprocates up and down, merging and separating with the lower cutter to complete the cutting operation of the battery aluminum-plastic film. This embodiment mainly improves the upper cutter 12; the lower cutter is existing technology and is not shown in the figure, so it will not be described in detail here.

[0022] Furthermore, referring to Figure 1 and Figure 2 The upper blade holder 11 is welded to the upper cutter 12. The welding connection makes the connection between the upper blade holder 11 and the upper cutter 12 more stable, thereby extending the service life of the upper cutter 10.

[0023] Furthermore, referring to Figure 1 and Figure 2 The upper cutter 12 is arranged along the length of the upper cutter holder 11, and the length of the upper cutter 10 is in the range of 400-410mm, preferably 410mm. The preferred size of the upper cutter 10 is 410*15*55mm.

[0024] Furthermore, referring to Figure 1 and Figure 2 The upper cutter 12 has cutting edges 121 on both sides, located on both sides of the upper cutter 12 at a 45° angle. Both sides of the upper cutter 12 also have chamfered angles 122 at 90°, with the cutting edges 121 located on one side of the chamfered angles 122. By creating 90° chamfered angles 122 on both sides of the upper cutter 12, the cutting edges 121 are set at a 45° angle. By changing the cutting edges 121 of the upper cutter 12 from a 90° right angle to a 45° angle, the adjustment difficulty of the upper cutter 12 is reduced, the problem of the upper cutter 12 sticking to the aluminum-plastic film and tearing off the nylon layer of the film is solved, and the service life of the upper cutter 12 is improved. It should be noted that the length of the chamfered angle 122 is 9mm, and the width of the chamfered angle 122 is 3mm.

[0025] Furthermore, referring to Figure 1 and Figure 2 The upper tool holder 11 and the upper cutter 12 are made of steel or ceramic. Preferably, the upper tool holder 11 and the upper cutter 12 are made of tungsten carbide or high-purity alumina ceramic. The upper cutter 12 made of tungsten carbide or high-purity alumina ceramic has good wear resistance and durability, thus extending the service life of the upper tool holder 11 and the upper cutter 12.

[0026] Furthermore, referring to Figure 1 and Figure 2 Both the upper tool holder 11 and the upper cutter 12 undergo heat treatment to achieve a hardness of HRC64. This ensures that the upper tool holder 11 and the upper cutter 12 possess high hardness, thereby increasing their wear resistance.

[0027] Furthermore, referring to Figure 1 and Figure 2 The upper blade holder 11 has multiple through holes 111 and countersunk holes 112 on both its front and back sides. Each through hole 111 and countersunk hole 112 forms a group. The diameter of the through hole 111 is 6.6 mm, and the countersunk hole 112 is located around the through hole 111, with a diameter of 11 mm and a depth of 6.5 mm. Each group of through holes 111 and countersunk holes 112 is evenly distributed on both sides of the upper blade holder 11. The multiple groups of through holes 111 and countersunk holes 112 are arranged in two rows on both sides of the upper blade holder 11, and are spaced apart from each other, so as to fix the position of the upper cutter 12 and prevent the upper cutter 12 from shaking during use.

[0028] This invention improves the sharpness of the blade 121 by setting the blade edge 121 of the upper cutter 12 at a 45° angle. This allows the upper cutter 12 to cut the aluminum-plastic film quickly without causing adhesion, thus avoiding the nylon layer of the aluminum-plastic film being torn off due to adhesion, which would cause a vacuum alarm. It also improves the service life of the upper cutter 12.

[0029] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A cutting structure for a battery aluminum-plastic film, characterized in that, include: The upper cutter (10) includes an upper blade holder (11) and an upper cutter (12). The upper blade holder (11) is connected to the upper cutter (12). The upper cutter (12) has a cutting edge (121) for cutting aluminum-plastic film on its side. The cutting edge (121) is set at a certain angle and the cross-section of the cutting edge (121) is an acute angle.

2. The cutting structure for a battery aluminum-plastic film according to claim 1, characterized in that, The upper blade holder (11) and the upper cutter (12) are welded together.

3. The cutting structure for a battery aluminum-plastic film according to claim 2, characterized in that, The upper cutter (12) is arranged along the length direction of the upper cutter holder (11), and the length range of the upper cutter (10) is 400-410mm.

4. The cutting structure for a battery aluminum-plastic film according to claim 1, characterized in that, The upper cutter (12) has a cutting edge (121) on both sides, the cutting edge (121) is set at a 45° angle, and the upper cutter (12) has a cutting angle (122) on both sides, the cutting angle (122) is set at a 90° angle, and the cutting edge (121) is located on one side of the cutting angle (122).

5. The cutting structure for a battery aluminum-plastic film according to claim 4, characterized in that, The length of the chamfer (122) is 9mm, and the width of the chamfer (122) is 3mm.

6. The cutting structure for a battery aluminum-plastic film according to claim 1, characterized in that, The upper blade holder (11) and the upper cutting blade (12) are made of steel or ceramic.

7. The cutting structure for a battery aluminum-plastic film according to claim 1, characterized in that, The upper tool holder (11) is provided with multiple through holes (111) and countersunk holes (112) on both the front and back sides. Each through hole (111) and each countersunk hole (112) is a group, and each group of through holes (111) and countersunk holes (112) is evenly distributed on both the front and back sides of the upper tool holder (11).

8. The cutting structure for a battery aluminum-plastic film according to claim 7, characterized in that, The diameter of the through hole (111) is 6.6 mm, and the countersunk hole (112) is located on the periphery of the through hole (111). The diameter of the countersunk hole (112) is 11 mm and the depth is 6.5 mm.

Images