Die for cutting and extruding lithium battery pole piece

Abstract

The utility model discloses a die for cutting and extruding a lithium battery pole piece, which comprises a lower die lower support, a lower cutter plate for supporting the lower die lower support and a punch for punching the lower die lower support, the lower die lower support is parallel to the punch, and the lower die lower support moves up and down in the middle of the lower cutter plate. An arc-shaped avoiding position is formed in the middle of the top end of the lower die lower support, a cutting edge is formed on the edge of the top end of the lower die lower support, the arc-shaped avoiding position is parallel to the punch, the arc-shaped avoiding position is sunken downwards and extends to the cutting edge to form an arc face, and a plane is formed between the arc-shaped avoiding position and the cutting edge.

Description

Technical Field

[0001] The utility model relates to the field of lithium battery pole pieces, in particular to a die used for cutting and extruding lithium battery pole pieces. Background Art

[0002] In the prior art, when cutting lithium battery pole pieces, the upper die punch flat surface is fitted with the lower die inner support flat surface to achieve pressing and cutting. This results in a high scrap rate of the finished cut products, cracks, and a high scrap rate during production, which affects the quality of the product. In addition, there is serious dust in the mold, which can cause crushing of the pole pieces and uneven pressing of the material. Therefore, a mold for cutting and extruding lithium battery pole pieces is proposed. Utility Model Content

[0003] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0004] A die for cutting and extruding lithium battery pole pieces comprises a lower die support, a lower knife plate for supporting the lower die support and a punch for punching the lower die support, the lower die support and the punch are parallel to each other, and the lower die support moves up and down in the middle of the lower knife plate, an arc-shaped avoidance is formed at the middle position of the top end of the lower die support, a cutting edge is formed at the edge of the top end of the lower die support, and the arc-shaped avoidance is parallel to the punch, the arc-shaped avoidance is concave downward, and the arc-shaped avoidance extends toward the cutting edge to form an arc surface, and a plane is formed between the arc-shaped avoidance and the cutting edge.

[0005] Preferably, a lower mold placement hole is provided between the lower mold lower support and the lower knife plate, and the lower mold placement hole is formed on the lower knife plate, the lower mold placement hole passes through the lower knife plate, and the lower mold lower support vertically passes through the lower mold placement hole, and the lower mold lower support moves up and down inside the lower mold placement hole.

[0006] Preferably, a first convex edge is arranged between the lower mold support and the lower mold placement hole, and the first convex edge is vertically formed on one side of the lower mold support, the first convex edge and the lower mold support have the same movement direction, and the first convex edge is attached to the side edge inside the lower mold placement hole, and the first convex edge moves up and down at the side edge inside the lower mold placement hole.

[0007] Preferably, a second convex edge is also provided between the lower mold support and the lower mold placement hole, and the second convex edge is vertically formed at the other side of the lower mold support, the second convex edge and the lower mold support have the same movement direction, and the second convex edge is attached to the other side edge inside the lower mold placement hole, and the second convex edge moves up and down at the other side edge inside the lower mold placement hole.

[0008] Compared with the prior art, the beneficial effects of the utility model are as follows: when the lithium battery pole piece is placed horizontally on the lower knife plate and horizontally attached to the lower mold support, the punch moves downward to cut the product, and the inner top of the lower mold support is pushed by the lower power to fit with the punch, and the product is cut by combined force. The arc-shaped avoidance formed at the top of the lower mold support fits with its punch, thereby reducing the cracks and powder falling caused by too large a fitting area and insufficient pressing of the material. After the cutting is completed, the negative pressure of the lower mold support is used for suction, so that the product is fitted with the middle concave arc surface of the lower mold support and the outer dimensions of the product are reduced, so that when the power of the lower mold support is retreated, the friction between the lower knife plate and the product is reduced, which will not affect the product quality and reduce powder falling.

[0009] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 It is a structural schematic diagram of a die for cutting and extruding lithium battery pole pieces;

[0012] Figure 2 Another structural schematic diagram of a die for cutting and extruding lithium battery pole pieces;

[0013] Figure 3 Schematic diagram of the structure of the lower blade;

[0014] Figure 4 It is a schematic diagram of the structure of the lower mold support.

[0015] As shown in the figure: 1. lower knife plate, 2. lower die support, 3. punch, 4. lower die placement hole, 5. first convex edge, 6. second convex edge, 7. arc avoidance. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-4 In an embodiment of the utility model, a die for cutting and extruding a lithium battery pole piece comprises a lower die support 2, a lower knife plate 1 for supporting the lower die support 2, and a punch 3 for punching the lower die support 2, wherein the lower die support 2 and the punch 3 are parallel to each other, and the lower die support 2 moves up and down in the middle of the lower knife plate 1, an arc-shaped avoidance 7 is formed at the middle position of the top of the lower die support 2, and a cutting edge (not shown in the figure) is formed at the edge of the top of the lower die support 2, and the arc-shaped avoidance 7 is parallel to the punch 3, the arc-shaped avoidance 7 is concave downward, and the height distance between the bottom end of the arc-shaped avoidance 7 and the top end of the lower die support 2 is 0.03mm-0.5mm, the arc-shaped avoidance 7 extends to the cutting edge and forms an arc surface, and the arc-shaped avoidance 7 is formed at the middle position of the top of the lower die support 2. A plane is formed between the avoidance 7 and the cutting edge, and the distance between the planes is 1.5mm-6.0mm, so that when the lithium battery electrode is placed horizontally on the lower knife plate 1 and horizontally attached to the lower mold support 2, the punch 3 moves downward to cut the product, and the inner top of the lower mold support 2 is pushed by the lower power to fit with the punch 3, and the product is cut by combined force. The arc avoidance 7 formed on the top of the lower mold support 2 is fitted with its punch 3 to reduce cracks and powder falling caused by too large a fitting area and inadequate pressing. After cutting, the negative pressure of the lower mold support 2 is used for suction to make the product fit with the middle concave arc surface of the lower mold support 2 and reduce the product's external dimensions, so that when the power of the lower mold support 2 is retreated, the friction between the lower knife plate 1 and the product is reduced, which will not affect the product quality and reduce powder falling.

[0018] A lower mold placement hole 4 is provided between the lower mold lower support 2 and the lower blade plate 1, and the lower mold placement hole 4 is formed on the lower blade plate 1, the lower mold placement hole 4 passes through the lower blade plate 1, and the lower mold lower support 2 vertically passes through the lower mold placement hole 4, and the lower mold lower support 2 moves up and down inside the lower mold placement hole 4.

[0019] A first flange 5 is arranged between the lower mold support 2 and the lower mold placement hole 4, and the first flange 5 is vertically formed on one side of the lower mold support 2, the first flange 5 and the lower mold support 2 have the same movement direction, and the first flange 5 is attached to the side inside the lower mold placement hole 4, and the first flange 5 moves up and down at the side inside the lower mold placement hole 4.

[0020] A second flange 6 is also provided between the lower mold support 2 and the lower mold placement hole 4, and the second flange 6 is vertically formed at the other side of the lower mold support 2, the second flange 6 and the lower mold support 2 have the same movement direction, and the second flange 6 is attached to the other side of the lower mold placement hole 4, and the second flange 6 moves up and down at the other side of the lower mold placement hole 4.

[0021] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A die for cutting and extruding lithium battery pole pieces, characterized in that: It includes a lower die support, a lower knife plate for supporting the lower die support, and a punch for punching the lower die support, the lower die support and the punch are parallel to each other, and the lower die support moves up and down in the middle of the lower knife plate, an arc-shaped avoidance is formed at the middle position of the top end of the lower die support, and a cutting edge is formed at the edge of the top end of the lower die support, and the arc-shaped avoidance is parallel to the punch, the arc-shaped avoidance is recessed downward, and the arc-shaped avoidance extends toward the cutting edge to form an arc surface, and a plane is formed between the arc-shaped avoidance and the cutting edge.

2. A die for cutting and extruding lithium battery pole pieces according to claim 1, characterized in that: A lower die placement hole is provided between the lower die lower support and the lower knife plate, and the lower die placement hole is formed on the lower knife plate, the lower die placement hole passes through the lower knife plate, and the lower die lower support vertically passes through the lower die placement hole, and the lower die lower support moves up and down inside the lower die placement hole.

3. A die for cutting and extruding lithium battery pole pieces according to claim 2, characterized in that: A first convex edge is arranged between the lower mold support and the lower mold placement hole, and the first convex edge is vertically formed on one side of the lower mold support, the first convex edge and the lower mold support have the same movement direction, and the first convex edge is attached to the side edge inside the lower mold placement hole, and the first convex edge moves up and down at the side edge inside the lower mold placement hole.

4. A die for cutting and extruding lithium battery pole pieces according to claim 2, characterized in that: A second convex edge is also arranged between the lower mold support and the lower mold placement hole, and the second convex edge is vertically formed at the other side of the lower mold support, the second convex edge and the lower mold support have the same movement direction, and the second convex edge is attached to the other side edge inside the lower mold placement hole, and the second convex edge moves up and down at the other side edge inside the lower mold placement hole.

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