Lithium metal slitting knife structure and cutting device with same

Abstract

The invention discloses a lithium metal slitting knife structure and a cutting device with the same, and belongs to the technical field of lithium metal cutting. Comprising a movable slitting knife and a static slitting knife, the bottom of the movable slitting knife is provided with a front knife face and a rear knife face which are arranged in a downward inclined mode, a movable slitting knife edge is formed at the intersection of the front knife face and the rear knife face, the front knife face comprises two vertical faces which are arranged in parallel and two inclined faces which are arranged in parallel, and the two inclined faces are arranged in parallel. One of the vertical surfaces is vertically intersected with the movable dividing blade, and the height of the vertical surface is greater than that of lithium metal to be cut; the top of the static slitting knife is provided with a horizontal knife face, the side face of the static slitting knife is provided with an inclined knife face, a static slitting knife edge is formed at the intersection of the horizontal knife face and the inclined knife face, and the inclined knife face, the front knife face and the rear knife face are consistent in inclination direction. According to the lithium metal cutting tool, the adhesion phenomenon caused by friction between the tool face and the lithium metal cross section can be avoided, and the expected lithium metal cutting effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium metal cutting, and in particular to a lithium metal cutting knife structure and a cutting device having the same. Background Art

[0002] With the global energy transformation and upgrading and the increasing carbon emission requirements, technology has higher and higher requirements for batteries. Traditional lithium-ion batteries can no longer meet the needs of various industries. The market is in urgent need of a new battery product to replace the existing lithium-ion batteries. Lithium metal batteries have high energy density, high safety, and their cycle life is also constantly improving. In the future, there is a lot of room to replace the existing lithium-ion batteries, and the market development prospects are huge.

[0003] Lithium metal is silver-white in color and extremely soft. It can be easily broken by pulling, and it is very sticky, sticking to almost all materials. The slitting knives currently on the market are mainly composed of an upper slitting knife with a sharp-angled blade and a lower slitting knife with a vertical-angled blade. This slitting knife structure will cause lithium metal to stick to the knife surface when cutting lithium metal. Therefore, the slitting knives on the market cannot meet the slitting requirements of lithium metal. Summary of the invention

[0004] The purpose of the present invention is to provide a lithium metal slitting knife structure and a cutting device having the same, aiming to solve the technical problems existing in the above-mentioned prior art. To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows:

[0005] A lithium metal slitting knife structure comprises a dynamic slitting knife and a static slitting knife, wherein the bottom of the dynamic slitting knife comprises a rake face and a flank face inclined downwardly, and a dynamic slitting blade is formed at the intersection of the rake face and the flank face, wherein the rake face comprises two relatively parallel vertical faces and two relatively parallel inclined faces, wherein one of the vertical faces intersects the dynamic slitting blade perpendicularly, and the height of the vertical face is greater than the height of the lithium metal to be cut; the top of the static slitting knife comprises a horizontal blade face, and the side of the static slitting knife comprises an inclined blade face, and a static slitting blade is formed at the intersection of the horizontal blade face and the inclined blade face, and the inclined directions of the inclined blade face, the rake blade face and the flank blade face are consistent.

[0006] As a further solution of the present invention: the surfaces of the front cutting edge, the rear cutting edge and the dynamic cutting edge are polished to a surface roughness of ≤Ra0.025.

[0007] As a further solution of the present invention: the surfaces of the horizontal blade surface, the inclined blade surface and the static blade edge are all polished to a surface roughness of ≤Ra0.025.

[0008] As a further solution of the present invention: the angle between the inclined surface of the front cutting edge and the vertical line is defined as β, 0°<β≤10°.

[0009] As a further solution of the present invention: the angle between the back cutting surface and the horizontal line is defined as γ, 0°<γ≤50°.

[0010] As a further solution of the present invention: the angle between the horizontal blade surface and the inclined blade surface is defined as δ, 80°<δ<90°.

[0011] The present invention also provides a lithium metal cutting device, which has a lithium metal slitting knife structure, including a movable cutting knife assembly and a static cutting knife assembly, wherein the movable cutting knife assembly is arranged above the static cutting knife assembly, wherein the movable cutting knife assembly includes a movable fixing frame and a movable slitting knife, wherein the movable slitting knife is fixedly arranged at the bottom of the movable fixing frame, wherein the static cutting knife assembly includes a static fixing frame and a static slitting knife, wherein the static slitting knife is fixedly arranged at the top of the static fixing frame.

[0012] Beneficial effects of the present invention:

[0013] The present invention provides a lithium metal cutting device, comprising a movable cutter assembly and a static cutter assembly arranged up and down, wherein the movable cutter assembly and the static cutter assembly respectively comprise a movable dividing cutter and a static dividing cutter, wherein the movable dividing cutter and the static dividing cutter constitute a lithium metal dividing cutter structure, wherein the front blade surface comprises two relatively parallel vertical surfaces and two relatively parallel inclined surfaces, wherein one vertical surface vertically intersects with the movable dividing blade, and the height of the vertical surface is greater than the height of the lithium metal to be cut; during cutting, the movable cutter assembly descends, and forms a gate blade with the static cutter assembly, and simultaneously cuts off the lithium metal. When the movable cutter assembly moves back and forth up and down, the inclined surface and the rear blade surface of the front blade surface of the movable dividing cutter and the inclined blade surface of the static dividing cutter do not contact the lithium metal. At this time, the adhesion phenomenon caused by the friction between the blade surface and the cross section of the lithium metal can be avoided, and the expected lithium metal cutting effect can be achieved. The structure of the lithium metal dividing cutter provided by the present invention can cut lithium metal efficiently and accurately, reduce cost loss and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] Figure 1 It is a schematic diagram of the structure of the movable slitting knife of the present invention;

[0016] Figure 2 It is a schematic diagram of the structure of the static cutting knife of the present invention;

[0017] Figure 3 It is a schematic side view of the structure of a lithium metal cutting device of the present invention;

[0018] Figure 4 It is a three-dimensional schematic diagram of the structure of a lithium metal cutting device of the present invention.

[0019] In the figure: 1. dynamic dividing cutter; 11. front cutting surface; 111. vertical surface; 112. inclined surface; 12. back cutting surface; 13. dynamic dividing blade; 2. static dividing cutter; 21. horizontal cutting surface; 22. inclined cutting surface; 23. static dividing blade; 3. dynamic fixing frame; 4. static fixing frame; 5. lithium metal; 6. dynamic cutting knife assembly; 7. static cutting knife assembly. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that terms such as "up", "down", "left", "right", "front" and "back" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation. Therefore, they should not be understood as limitations on the present invention.

[0022] In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Embodiment 1

[0024] See also Figure 1 and Figure 2 As shown, this embodiment provides a lithium metal slitting knife structure, including a dynamic slitting knife 1 and a static slitting knife 2.

[0025] The bottom of the movable cutting knife 1 has a rake face 11 and a flank face 12 arranged downwardly, and a movable cutting edge 13 is formed at the intersection of the rake face 11 and the flank face 12. The surfaces of the rake face 11, the flank face 12 and the movable cutting edge 13 must be super-finished and polished to a surface roughness of ≤Ra0.025. The rake face 11 includes two relatively parallel vertical faces 111 and two relatively parallel inclined faces 112, one of which is perpendicular to the movable cutting edge 13, and the height of the vertical face 111 is greater than the height of the lithium metal 5 to be cut, so as to ensure that the lithium metal 5 does not contact the inclined face 112 of the rake face 11 during cutting. The top of the static dividing cutter 2 has a horizontal blade surface 21, and the lithium metal 5 to be cut is placed flat on the horizontal blade surface 21. The side of the static dividing cutter 2 has an inclined blade surface 22. The intersection of the horizontal blade surface 21 and the inclined blade surface 22 forms a static dividing blade 23. The surfaces of the inclined blade surface 22 and the static dividing blade 23 must be super-finished and polished to a surface roughness of ≤Ra0.025.

[0026] Further, in this embodiment, the angle between the inclined surface 112 of the front blade surface 11 and the vertical line A is an acute angle β, 0°<β≤10°. The angle between the rear blade surface 12 and the horizontal line B is an acute angle γ, 0°<γ≤50°. The angle between the horizontal blade surface 21 and the inclined blade surface 22 is an acute angle δ, 80°<δ<90°.

[0027] The structure of the lithium metal 5 slitting knife of the present invention replaces the conventional slitting knife structure currently available in the market, and adopts a wire cutting method. During the cutting process, the inclined surface 112 of the front blade 11, the back blade 12 and the inclined blade surface 22 do not contact the lithium metal 5. This structure avoids the phenomenon of adhesion caused by friction between the side surface and the cutting surface of the lithium metal 5 after the conventional slitting knife is cut. The structure of the lithium metal 5 slitting knife provided by the present invention can cut lithium metal 5 with high efficiency and high precision, reduce cost loss and improve production efficiency.

[0028] Embodiment 2

[0029] On the basis of the first embodiment, this embodiment provides a lithium metal 5 cutting device, which has a lithium metal 5 cutting knife structure in the first embodiment.

[0030] See also Figure 3 and Figure 4 As shown, the lithium metal 5 cutting device includes a dynamic slitting knife 1, a dynamic fixing frame 3 of the dynamic slitting knife 1, a static slitting knife 2, a static fixing frame 4 of the static slitting knife 2, and lithium metal 5. The dynamic fixing frame 3 is provided with a fixing threaded hole for the dynamic slitting knife 1 and a mounting hole for the dynamic fixing frame 3. The dynamic slitting knife 1 is provided with a mounting hole for mounting on the dynamic fixing frame 3. The static slitting knife 2 is provided with a mounting hole for mounting on the static fixing frame 4. The static fixing frame 4 is provided with a fixing threaded hole for the static slitting knife 2 and a mounting waist hole for the static fixing frame 4.

[0031] See also Figure 3 As shown, the dynamic slitting knife 1 is fixed below the dynamic fixed frame 3 to form a dynamic slitting knife assembly 6. The static slitting knife 2 is fixed in front of the static fixed frame 4 to form a static slitting knife assembly 7. The dynamic slitting knife assembly 6 is arranged above the static slitting knife assembly 7. The lithium metal 5 is arranged between the dynamic slitting knife assembly 6 and the static slitting knife assembly 7 and contacts the horizontal blade surface 21 of the static slitting knife 2.

[0032] When the lithium metal 5 cutting device provided by the present invention operates normally, the moving cutter assembly 6 descends and forms a gate knife with the static cutter assembly 7, and cuts off the lithium metal 5 at the same time. When the moving cutter assembly 6 moves up and down, the inclined surface 112 and the back surface 12 of the front blade 11 of the moving cutting blade 1 and the inclined blade surface 22 of the static cutting blade 2 do not contact the lithium metal 5. At this time, the adhesion phenomenon caused by the friction between the blade surface and the cross section of the lithium metal 5 can be avoided, and the expected lithium metal 5 cutting effect can be achieved.

[0033] The above is a detailed description of the preferred embodiments of the present invention, which cannot be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A lithium metal cutting knife structure, characterized in that: include: A movable cutting knife (1), wherein the bottom of the movable cutting knife (1) has a rake face (11) and a flank face (12) arranged downwardly, and a movable cutting edge (13) is formed at the intersection of the rake face (11) and the flank face (12), wherein the rake face (11) comprises two relatively parallel vertical faces (111) and two relatively parallel inclined faces (112), wherein one of the vertical faces (111) intersects the movable cutting edge (13) at right angles, and the height of the vertical face (111) is greater than the height of the lithium metal (5) to be cut; A static dividing cutter (2), wherein the top of the static dividing cutter (2) has a horizontal blade surface (21), the side of the static dividing cutter (2) has an inclined blade surface (22), the intersection of the horizontal blade surface (21) and the inclined blade surface (22) forms a static dividing blade edge (23), and the inclined blade surface (22), the front blade surface (11) and the rear blade surface (12) have the same inclination direction.

2. A lithium metal cutting knife structure according to claim 1, characterized in that: The surfaces of the front cutting edge (11), the rear cutting edge (12) and the dynamic cutting edge (13) are polished to a surface roughness of ≤Ra0.

025.

3. A lithium metal cutting knife structure according to claim 2, characterized in that: The surfaces of the horizontal blade surface (21), the inclined blade surface (22) and the static blade edge (23) are all polished to a surface roughness of ≤Ra0.

025.

4. A lithium metal cutting knife structure according to claim 1, characterized in that: The angle between the inclined surface (112) of the front cutting surface (11) and the vertical line is defined as β, 0°<β≤10°.

5. A lithium metal cutting knife structure according to claim 1, characterized in that: The angle between the back cutting surface (12) and the horizontal line is defined as γ, 0°<γ≤50°.

6. A lithium metal cutting knife structure according to claim 1, characterized in that: The included angle between the horizontal blade surface (21) and the inclined blade surface (22) is defined as δ, 80°<δ<90°.

7. A lithium metal cutting device, comprising the lithium metal cutting blade structure according to any one of claims 1 to 6, characterized in that: The invention comprises a movable cutter assembly (6) and a stationary cutter assembly (7), wherein the movable cutter assembly (6) is arranged above the stationary cutter assembly (7), wherein the movable cutter assembly (6) comprises a movable fixing frame (3) and a movable dividing cutter (1), wherein the movable dividing cutter (1) is fixedly arranged at the bottom of the movable fixing frame (3), and wherein the stationary cutter assembly (7) comprises a stationary fixing frame (4) and a stationary dividing cutter (2), wherein the stationary dividing cutter (2) is fixedly arranged at the top of the stationary fixing frame (4).

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