Copper-lithium composite sheet die cutting device

Abstract

The utility model provides a die cutting device for a copper lithium clad sheet. The die cutting device comprises a base, a lower cutter mechanism, a movable seat, a lifting mechanism, an upper cutter mechanism, a first stripping mechanism and a second stripping mechanism, a lifting mechanism is arranged on the movable seat, the lifting mechanism can control the lifting of the movable seat, and a base is arranged below the movable seat; a lower cutter mechanism is arranged on the discharging side of the base, an upper cutter mechanism is arranged on the discharging side of the movable seat, the output end of the lower cutter mechanism and the output end of the upper cutter mechanism are oppositely arranged, and a first stripping mechanism and a second stripping mechanism are arranged on the front side and the rear side of the upper cutter mechanism respectively. Through the arrangement of the base, the lower cutter mechanism, the moving seat, the lifting mechanism, the upper cutter mechanism, the first stripping mechanism and the second stripping mechanism, the first stripping mechanism and the second stripping mechanism can be used for stripping the copper-lithium clad sheet, the conditions of cutter sticking and material blocking can be effectively prevented, and the production efficiency is further improved.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production technology, specifically a copper-lithium composite sheet die-cutting device. Background Technology

[0002] Currently, in order to improve battery capacity and cycle performance, electrochemical pre-lithiation is usually adopted, which involves coating the battery cell with a copper-lithium composite sheet to combine the battery cell and the lithium source.

[0003] However, the following challenges were encountered during the implementation of the production line: lithium metal is lightweight, soft, and highly adhesive, and cutting lithium metal often results in sticking to the cutting blade. The copper-lithium composite sheet after die cutting is stuck to the cutting blade edge, requiring frequent blade cleaning, which affects production efficiency and product quality. Utility Model Content

[0004] The technical problem to be solved by this utility model is how to prevent material from sticking to the die during the die cutting of copper-lithium composite sheets.

[0005] This utility model solves the above-mentioned technical problems through the following technical means:

[0006] A copper-lithium composite sheet die-cutting device includes a base (1), a lower cutting mechanism (2), a movable seat (3), a lifting mechanism, an upper cutting mechanism (5), a first stripping mechanism (6), and a second stripping mechanism (7). The movable seat (3) is provided with a lifting mechanism, which can control the lifting of the movable seat (3). The base (1) is provided below the movable seat (3). The lower cutting mechanism (2) is provided on the discharge side of the base (1), and the upper cutting mechanism (5) is provided on the discharge side of the movable seat (3). The output end of the lower cutting mechanism (2) is opposite to the output end of the upper cutting mechanism (5). The first stripping mechanism (6) and the second stripping mechanism (7) are respectively provided on the front and rear sides of the upper cutting mechanism (5).

[0007] Beneficial effects: Through the configuration of the base, lower cutting mechanism, moving seat, lifting mechanism, upper cutting mechanism, first unloading mechanism, and second unloading mechanism, the first unloading mechanism and the second unloading mechanism can unload copper-lithium composite sheets, effectively preventing material sticking and clogging, thereby improving production efficiency.

[0008] Furthermore, the lower cutting mechanism (2) includes a first mounting platform (21) and a lower cutting blade (22). The first mounting platform (21) is fixed on the discharge side of the base (1), and the lower cutting blade (22) is fixed on the top wall of the first mounting platform (21) near the inner side.

[0009] Furthermore, a plurality of first air holes (24) are provided on the outer side of the top wall of the first mounting platform (21) along the X-axis, and a plurality of first air pipes (23) are fixed on the side wall of the discharge side of the first mounting platform (21). The first air pipes (23) are connected to the first air holes (24), and the first air holes (24) are set perpendicular to the top wall of the first mounting platform (21).

[0010] Beneficial effect: By setting the first air hole, after the cutting is completed and before the copper-lithium composite sheet is pulled away, the air blowing action of the first air hole prevents the copper-lithium composite sheet from sticking to the end face of the lower cutter.

[0011] Furthermore, the upper cutting mechanism (5) includes a second mounting platform (51) and an upper cutting blade (52). The second mounting platform (51) is fixed on the discharge side of the movable seat (3), and the upper cutting blade (52) is fixed on the bottom wall of the second mounting platform (51) near the inner side.

[0012] Furthermore, a plurality of second air holes (54) are provided on the outer side of the bottom wall of the second mounting platform (51) along the X-axis. Second air pipes (53) are fixed on the left and right side walls of the second mounting platform (51). The second air pipes (53) are connected to the second air holes (54). The second air holes (54) are positioned facing the end of the cutting edge of the upper cutter (52).

[0013] Beneficial effect: The second air vent can clean the lithium metal powder on the cutting edge, preventing it from sticking to the blade.

[0014] Furthermore, the upper cutter (52) of the upper cutter mechanism (5) and the lower cutter (22) of the lower cutter mechanism (2) are both made of a material with non-stick properties.

[0015] Beneficial effect: By setting the materials of the upper and lower cutting blades, it is possible to further prevent the blade from sticking.

[0016] Furthermore, the first unloading mechanism (6) includes a first lifting buffer assembly (61) and a first unloading pressure plate (64). At least one of the first lifting buffer assemblies (61) is provided. The first lifting buffer assembly (61) is fixed to the front side of the upper cutting mechanism (5). The bottom end of the first lifting buffer assembly (61) is fixed with the first unloading pressure plate (64). The second unloading mechanism (7) includes a second lifting buffer assembly (71) and a second unloading pressure plate (74). At least one of the second lifting buffer assemblies (71) is provided. The second lifting buffer assembly (71) is fixed to the rear side of the upper cutting mechanism (5). The bottom end of the second lifting buffer assembly (71) is fixed with the second unloading pressure plate (74).

[0017] Beneficial effects: By setting the first lifting buffer component and the second lifting buffer component, the upper cutting mechanism can buffer the material removal after cutting the copper-lithium composite sheet, realizing the removal action of the cut material sticking to the cutter and reducing the material sticking to the cutter.

[0018] Furthermore, an oil-storing wool felt (65) is fixed on the side of the first stripping plate (64) near the upper cutting mechanism (5), and at least one oil injection pipe (66) is fixed on the first stripping plate (64). The oil injection pipe (66) is connected to the oil-storing wool felt (65) through a through hole in the first stripping plate (64).

[0019] Beneficial effects: By setting up oil-storing wool felt and oil injection pipeline, the cutting edge of the upper cutter is coated with oil during the unloading process, reducing the situation of lithium sticking to the cutter.

[0020] Furthermore, the first lifting buffer assembly (61) includes a first lifting guide rod (611), a first linear bearing (612), and a first compression spring (613); the first linear bearing (612) is fixed on the upper cutting mechanism (5), the first lifting guide rod (611) passes through the first linear bearing (612), the bottom end of the first lifting guide rod (611) is fixed on the first stripping pressure plate (64), and the first compression spring (613) is sleeved on the first lifting guide rod (611) between the first stripping pressure plate (64) and the first linear bearing (612).

[0021] Beneficial effects: By setting the structure of the first lifting and buffering component, the spring buffering of material release is used to realize the material release action that is stuck to the cutter after cutting, thereby reducing the material sticking to the cutter.

[0022] Furthermore, the second lifting buffer assembly (71) includes a second lifting guide rod (711), a second linear bearing (712), and a second compression spring (713). The second linear bearing (712) is fixed on the upper cutting mechanism (5). The second lifting guide rod (711) passes through the second linear bearing (712). The bottom end of the second lifting guide rod (711) is fixed on the second stripping pressure plate (74). The second compression spring (713) is sleeved on the second lifting guide rod (711) between the second stripping pressure plate (74) and the second linear bearing (712).

[0023] Beneficial effects: By setting up the second lifting and buffer component structure, the spring buffer is used to release the material, which is stuck to the cutter after cutting, thus reducing the material sticking to the cutter. Attached Figure Description

[0024] Figure 1 This is a front perspective view of the copper-lithium composite sheet die-cutting device according to Embodiment 1 of this utility model;

[0025] Figure 2 This is a right view of the copper-lithium composite sheet die-cutting device according to Embodiment 1 of this utility model;

[0026] Figure 3 This is a bottom view of the upper cutter in the copper-lithium composite sheet die-cutting device according to Embodiment 1 of this utility model;

[0027] Figure 4 for Figure 3 CC section view;

[0028] Figure 5 This is a rear perspective view of the copper-lithium composite sheet die-cutting device according to Embodiment 1 of this utility model. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] Example 1

[0031] like Figure 1 As shown, this embodiment provides a copper-lithium composite sheet die-cutting device, including a base 1, a lower cutting mechanism 2, a movable seat 3, a lifting mechanism (not shown), an upper cutting mechanism 5, a first stripping mechanism 6, and a second stripping mechanism 7.

[0032] like Figure 1 , Figure 2 As shown, guide columns 11 are fixed on the left and right sides of the top wall of the base 1. Each guide column 11 passes through the movable seat 3. A lifting mechanism (not shown) is fixed on the movable seat 3. The lifting mechanism can control the movable seat 3 to rise and fall along the guide columns 11. A lower cutting mechanism 2 is fixed on the discharge side of the base 1, and an upper cutting mechanism 5 is fixed on the discharge side of the movable seat 3. A first unloading mechanism 6 and a second unloading mechanism 7 are fixed on the front and rear sides of the upper cutting mechanism 5, respectively.

[0033] like Figure 1 , Figure 2As shown, the lower cutting mechanism 2 includes a first mounting platform 21, a lower cutting blade 22, and a first air blowing pipe 23. The lower cutting blade 22 is fixed on the top wall of the first mounting platform 21 near the inner side. Multiple first air blowing holes 24 are opened on the outer side of the top wall of the first mounting platform 21 along the X-axis. Multiple first air blowing pipes 23 are fixed on the side wall of the discharge side of the first mounting platform 21. The first air blowing pipes 23 are connected to the first air blowing holes 24. In this embodiment, there are two first air blowing pipes 23. The first air blowing holes 24 are set perpendicular to the top wall of the first mounting platform 21 to ensure that the air blowing direction of the first air blowing holes 24 is perpendicular to the top wall of the first mounting platform 21. After the cutting is completed, before the copper-lithium composite sheet is pulled away, the air blowing action prevents the copper-lithium composite sheet from sticking to the end face of the lower cutting blade 22.

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the upper cutting mechanism 5 includes a second mounting platform 51, an upper cutting blade 52, and a second air blowing pipe 53. The upper cutting blade 52 is fixed on the bottom wall of the second mounting platform 51 near the inner side. Multiple second air blowing holes 54 are opened along the X-axis on the outer side of the bottom wall of the second mounting platform 51. The second air blowing pipes 53 are fixed on both the left and right side walls of the second mounting platform 51. The second air blowing pipes 53 are connected to the second air blowing holes 54. The second air blowing holes 54 are set towards the end of the cutting edge of the upper cutting blade 52 to ensure that the air blowing direction of the second air blowing holes 54 is towards the end of the cutting edge of the upper cutting blade 52, so as to clean the lithium metal powder on the cutting edge of the cutting blade and prevent the blade from sticking.

[0035] like Figure 1 As shown, the lower cutter 22 and the upper cutter 52 are made of materials with non-stick properties, including but not limited to ceramic, DLC coating and other materials.

[0036] like Figure 1 , Figure 5As shown, the first unloading mechanism 6 includes a first lifting and buffer assembly 61, a first unloading pressure plate 64, an oil-storing felt 65, and an oil injection pipe 66. At least one first lifting and buffer assembly 61 is provided; in this embodiment, two first lifting and buffer assemblies 61 are provided. The first lifting and buffer assembly 61 is fixed on the second mounting platform 51. The bottom end of the first lifting and buffer assembly 61 is fixed with the first unloading pressure plate 64. The oil-storing felt 65 is fixed to the side of the first unloading pressure plate 64 near the upper cutter 52. At least one oil injection pipe 66 is fixed on the first unloading pressure plate 64. In this embodiment, the top wall of the first unloading pressure plate 64... Two oil injection lines 66 are fixed at an upper interval. The oil injection lines 66 are connected to the oil storage felt 65 through the through hole in the first stripping pressure plate 64. The first lifting buffer assembly 61 includes a first lifting guide rod 611, a first linear bearing 612, and a first compression spring 613. The first linear bearing 612 is fixed on the second mounting platform 51. The first lifting guide rod 611 passes through the first linear bearing 612. The bottom end of the first lifting guide rod 611 is fixed on the first stripping pressure plate 64. The first compression spring 613 is sleeved on the first lifting guide rod 611 between the first stripping pressure plate 64 and the first linear bearing 612.

[0037] like Figure 1 As shown, the second unloading mechanism 7 includes a second lifting buffer assembly 71 and a second unloading pressure plate 74. At least one second lifting buffer assembly 71 is provided, and in this embodiment, two second lifting buffer assemblies 71 are provided. The second lifting buffer assembly 71 is fixed on the second mounting platform 51, and the second unloading pressure plate 74 is fixed to the bottom end of the second lifting buffer assembly 71. The second lifting buffer assembly 71 includes a second lifting guide rod 711, a second linear bearing 712, and a second compression spring 713. The second linear bearing 712 is fixed on the second mounting platform 51, and the second lifting guide rod 711 passes through the second linear bearing 712. The bottom end of the second lifting guide rod 711 is fixed on the second unloading pressure plate 74, and the second compression spring 713 is sleeved on the second lifting guide rod 711 between the second unloading pressure plate 74 and the second linear bearing 712.

[0038] like Figure 1 , Figure 5 As shown, the first stripping mechanism 6 and the second stripping mechanism 7 utilize spring buffer stripping to achieve the stripping action of the cut material sticking to the cutter, reducing the sticking of material to the cutter; the first stripping mechanism 6 impregnates the wool felt through the oil injection pipe 66 and applies oil to the cutting edge of the upper cutter 52 during the stripping process, reducing the sticking of material to the cutter; the first stripping pressure plate 64 and the second stripping pressure plate 74 are both made of anti-stick material, including but not limited to ceramic, PLC coating, TAC coating and other materials.

[0039] When using, such as Figure 2As shown, the copper-lithium composite sheet roll is located on the right side of the copper-lithium composite sheet die-cutting device. The copper-lithium composite sheet extends between the upper cutter 52 and the lower cutter 22. A vacuum belt is installed on the left side of the copper-lithium composite sheet die-cutting device, and the cut copper-lithium composite sheet is transported away by the vacuum belt. In its natural state, the first stripping plate 64 is lower than the cutting edge of the upper cutter 52. Before the upper cutter 52 cuts the material, the first stripping plate 64 contacts the material first, causing the compression spring to be in a compressed state. After the cutting is completed, the upper cutter 52 rises, the first compression spring 613 returns to its initial length, and the first stripping plate 64 is lower than the cutting edge height of the upper cutter 52, thereby preventing the copper-lithium composite sheet from sticking to the upper cutter 52. The first stripping plate 64 has small holes inside, and the oil injection pipe 66 can inject oil into the oil storage felt 65 through the small holes inside the first stripping plate 64. The lubricant used is a non-reactive oil that does not adhere to lithium metal. During the stripping process, the upper cutter 52 is coated with oil through the oil-storing felt 65, which reduces lithium adhesion to the cutter. Similarly, in its natural state, the second stripping plate 74 is lower than the cutting edge of the upper cutter 52. Before the upper cutter 52 cuts the material, the second stripping plate 74 contacts the vacuum belt below the material, compressing the spring. After the cutting is completed, as the upper cutter 52 rises, the second compression spring 713 returns to its initial length, and the second stripping plate 74 is lower than the cutting edge of the upper cutter 52, thus preventing the copper-lithium composite sheet from sticking to the upper cutter 52. At the same time, after the cutting is completed and before the copper-lithium composite sheet is pulled away, the air blowing action of the first air blowing pipe 23 can prevent the copper-lithium composite sheet from sticking to the end face of the lower cutter 22.

[0040] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A copper-lithium composite sheet die-cutting device characterized by comprising: The base (1), the lower cutter mechanism (2), the moving seat (3), the lifting mechanism, the upper cutter mechanism (5), the first material removing mechanism (6), and the second material removing mechanism (7) are included. The lifting mechanism is arranged on the moving seat (3) and can control the lifting of the moving seat (3), and the bottom of the moving seat (3) is provided with the base (1); the discharge side of the base (1) is provided with the lower cutter mechanism (2), the discharge side of the moving seat (3) is provided with the upper cutter mechanism (5), the output end of the lower cutter mechanism (2) is arranged opposite to the output end of the upper cutter mechanism (5), and the front and rear sides of the upper cutter mechanism (5) are respectively provided with the first material removing mechanism (6) and the second material removing mechanism (7).

2. The copper-lithium composite sheet die-cutting device according to claim 1, characterized by: The lower cutter mechanism (2) includes the first mounting table (21) and the lower cutter (22), the first mounting table (21) is fixed on the discharge side of the base (1), and the lower cutter (22) is fixed on the top wall of the first mounting table (21) close to the inner side.

3. The copper-lithium composite sheet die-cutting device according to claim 2, characterized by: A plurality of first air blowing holes (24) are arranged on the outer side of the top wall of the first mounting table (21) along the X-axis, a plurality of first air blowing pipelines (23) are fixed on the side wall of the discharge side of the first mounting table (21), the first air blowing pipelines (23) are in communication with the first air blowing holes (24), and the first air blowing holes (24) are arranged vertically to the top wall of the first mounting table (21).

4. The copper-lithium composite sheet die-cutting device according to claim 1, characterized by: The upper cutter mechanism (5) includes the second mounting table (51) and the upper cutter (52), the second mounting table (51) is fixed on the discharge side of the moving seat (3), and the upper cutter (52) is fixed on the bottom wall of the second mounting table (51) close to the inner side.

5. The copper-lithium composite sheet die-cutting apparatus according to claim 4, characterized by: A plurality of second air blowing holes (54) are arranged on the outer side of the bottom wall of the second mounting table (51) along the X-axis, second air blowing pipelines (53) are fixed on the left and right side walls of the second mounting table (51), the second air blowing pipelines (53) are in communication with the second air blowing holes (54), and the second air blowing holes (54) are arranged towards the blade end of the upper cutter (52).

6. The copper-lithium composite sheet die-cutting device according to claim 1, characterized by: The upper cutter (52) of the upper cutter mechanism (5) and the lower cutter (22) of the lower cutter mechanism (2) are both made of a material with anti-sticking properties.

7. The copper-lithium composite sheet die-cutting device according to claim 1, characterized by: The first material removing mechanism (6) includes the first lifting buffer assembly (61) and the first material removing pressing plate (64), at least one first lifting buffer assembly (61) is arranged, the first lifting buffer assembly (61) is fixed on the front side of the upper cutter mechanism (5), and the bottom end of the first lifting buffer assembly (61) is fixed with the first material removing pressing plate (64); the second material removing mechanism (7) includes the second lifting buffer assembly (71) and the second material removing pressing plate (74), at least one second lifting buffer assembly (71) is arranged, the second lifting buffer assembly (71) is fixed on the rear side of the upper cutter mechanism (5), and the bottom end of the second lifting buffer assembly (71) is fixed with the second material removing pressing plate (74).

8. The copper-lithium composite sheet die-cutting apparatus according to claim 7, characterized by: The first material ejection pressing plate (64) is fixed with an oil storage wool felt (65) near one side of the upper cutter mechanism (5), and at least one oil injection pipeline (66) is fixed on the first material ejection pressing plate (64), which is communicated with the oil storage wool felt (65) through a through hole in the first material ejection pressing plate (64).

9. The copper-lithium composite sheet die-cutting apparatus according to claim 7, characterized by: The first lifting buffer assembly (61) comprises a first lifting guide rod (611), a first linear bearing (612) and a first compression spring (613), the first linear bearing (612) is fixed on the upper cutter mechanism (5), the first lifting guide rod (611) penetrates through the first linear bearing (612), the bottom end of the first lifting guide rod (611) is fixed on the first material ejection pressing plate (64), and the first compression spring (613) is sleeved on the first lifting guide rod (611) between the first material ejection pressing plate (64) and the first linear bearing (612).

10. The copper-lithium composite sheet die-cutting apparatus according to claim 7, characterized by: The second lifting buffer assembly (71) comprises a second lifting guide rod (711), a second linear bearing (712) and a second compression spring (713), the second linear bearing (712) is fixed on the upper cutter mechanism (5), the second lifting guide rod (711) penetrates through the second linear bearing (712), the bottom end of the second lifting guide rod (711) is fixed on the second material ejection pressing plate (74), and the second compression spring (713) is sleeved on the second lifting guide rod (711) between the second material ejection pressing plate (74) and the second linear bearing (712).

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