Stamping die for battery cover plate

Abstract

The utility model belongs to the technical field of battery cover plate stamping machining, and particularly relates to a battery cover plate stamping die. The stamping device comprises an upper die set and a lower die set, a supporting frame is arranged in the middle of the rear side of the top of the lower die set, a downward pressing air cylinder is arranged at the top of the supporting frame, a front guide block is arranged at the front end of the top of the lower die set, and a transverse rear guide block is arranged at the root of the inner side of the supporting frame. The inner side face of the front guide block and the inner side of the rear guide block are provided with sliding grooves respectively, the sliding grooves are used for supporting and guiding the cover plate material forwards when the cover plate material slides, a positioning cylinder is arranged in the center of the top of the lower die set and connected with a downwards-inclined discharging pipe, and the discharging pipe is arranged in the discharging base and the lower end of the discharging pipe extends out of the discharging base. According to the device, the stamping precision and the material utilization rate are improved, and certain efficient safety is achieved; damping and buffering are achieved, impact force caused by mutual collision is reduced at the moment when the upper die and the lower die are assembled, influences on the dies are effectively reduced, and the service life of the dies is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery cover plate stamping processing, and in particular relates to a battery cover plate stamping die. Background Art

[0002] With the widespread popularity of lithium batteries, their related components have also developed rapidly. Among the structural parts of lithium batteries, one of the most core components is the battery cover, which mainly plays the role of forming a sealed environment after welding with the battery shell to encapsulate the battery cells and electrolytes inside. Of course, as a battery cover, another very important role is to electrically connect with the tabs of the battery cells, so as to achieve the current exchange between the external and internal batteries. The battery cover is completed by stamping process. This part is not complicated, but a lot of assembly work needs to be completed in the downstream process. However, some steps can be integrated into the forming process, such as the setting of explosion-proof valves, but by stamping out a specific geometric shape on the battery cover, when the pressure reaches the predetermined value, the metal cover will bulge, which can also achieve the same explosion-proof effect.

[0003] At present, when stamping the cover of cylindrical batteries, workers need to manually position and place the cylindrical lithium battery before stamping. The manual positioning accuracy is low, and during the stamping process, it is easy to cause uneven feeding of the stamped cylindrical lithium battery cover, resulting in low utilization of the material plate. In addition, the shock absorption effect of the mold during processing is poor, and the long-term collision between the upper and lower molds is prone to mold cracking, which affects the service life of the mold. Utility Model Content

[0004] In view of the above problems, the utility model provides a cylindrical battery cover stamping die to solve the problem of low accuracy of existing manual positioning.

[0005] The utility model discloses a battery cover stamping die, comprising a discharge base and a stamping device.

[0006] The punching device includes an upper die set and a lower die set.

[0007] A support frame is arranged at the middle of the rear side of the top of the lower die set, a downward pressure cylinder is arranged at the top of the support frame, a front guide block is arranged at the front end of the top of the lower die set, a transverse rear guide block is arranged at the inner root of the support frame, and a slide groove is arranged on the inner side of the front guide block and the inner side of the rear guide block respectively, and the slide groove is used to support and guide the cover sheet material to slide forward, and a positioning cylinder is arranged in the center of the top of the lower die set to connect the downwardly inclined discharge pipe, and the discharge pipe is arranged in the discharge base and extends out of the discharge base at the lower end;

[0008] A mold fixing part is arranged at the center of the bottom of the upper mold group, a stamping mold is arranged at the bottom of the mold fixing part, and guide mechanisms are arranged at the four corners of the upper mold group and the four corners of the lower mold group.

[0009] According to the battery cover stamping die, guide cylinders are arranged at the bottom of the four corners of the upper die set, through holes are arranged at the corresponding positions of the guide cylinders at the four corners of the upper die set, the top of the through hole is engaged with the blocking cover, and is fixedly connected to the upper die set through a hinged connector, a movable plate is arranged at the bottom end of the inner side of the through hole, the top of the movable plate is connected to the second spring, and guide cylinders are arranged around the bottom of the through hole;

[0010] Guide columns are arranged at the tops of the four corners of the lower die set, an extrusion cylinder is arranged on the tops of the guide columns, a first spring is sleeved on the guide columns, the first spring is fixedly connected to the lower die set, and the extrusion cylinder is embedded in the guide cylinder.

[0011] According to the battery cover stamping die, a bottom plate is arranged at the bottom of the discharge base, and moving devices and lifting and leveling mechanisms are evenly distributed at the four corners of the bottom of the bottom plate.

[0012] According to the battery cover stamping die, a card slot is arranged around the positioning cylinder, the positioning cylinder is installed on the top of the card slot, and the positioning cylinder and the card slot are connected by a card block.

[0013] According to the battery cover stamping die, the support frame includes a vertically arranged H-shaped support plate, and a downward pressure cylinder fixing plate is horizontally arranged on the top of the support plate; the H-shaped support plate includes vertical plates corresponding to the left and right sides and a horizontal plate between the vertical plates corresponding to the position of the front guide block.

[0014] According to the battery cover stamping die, a front guide block limiter is arranged at the front center of the die fixing portion, the lifting and leveling mechanism is an electric telescopic rod, and a protective pad is arranged at the bottom of the electric telescopic rod.

[0015] According to the battery cover stamping die, the connecting piece is a pin mechanism.

[0016] According to the battery cover stamping die, a slideway is arranged in the guide cylinder, the slideway fits with the extrusion cylinder, and the guide cylinder is slidably connected with the extrusion cylinder.

[0017] Its advantages are:

[0018] It can realize rapid stamping work, replace the manual positioning and placement of cylindrical lithium batteries by staff, improve the accuracy of stamping, and has certain efficiency and safety;

[0019] It realizes shock absorption and buffering, so as to reduce the impact force of mutual collision when the upper and lower molds are closed, effectively reduce the impact on the mold and increase the service life of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the side cross-sectional structure of the utility model;

[0022] Figure 3 It is a partial front view cross-sectional structural schematic diagram of the utility model;

[0023] Figure 4 This is a schematic diagram of the card slot structure of the utility model.

[0024] : 1. moving device, 2. lower die set, 3. supporting frame, 4. pressing cylinder, 5. guide column, 6. extrusion cylinder, 7. first spring, 8. front guide block, 9. rear guide block, 10. slide groove, 11. cover plate material, 12. slot, 13. positioning cylinder, 14. block, 15. discharge pipe, 16. upper die set, 17. die fixing part, 18. stamping die, 19. guide cylinder, 20. through hole, 21. blocking cover, 22. movable plate, 23. second spring, 24. rear guide block limiting part, 25. electric telescopic rod, 26. protective pad, 27. bottom plate. DETAILED DESCRIPTION

[0025] The preferred examples of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred examples described herein are only used to illustrate and explain the present invention, and do not limit the present invention.

[0026] It should be noted that the directions or positional relationships indicated by terms such as “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside” 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. They do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0027] Figures 1 to 4 An implementation mode of the utility model is shown.

[0028] As shown in the figure, a battery cover stamping die includes a discharge base and a stamping device. A bottom plate 27 is arranged at the bottom of the discharge base. A moving device 1 and a lifting and leveling mechanism are evenly distributed at the four corners of the bottom of the bottom plate 27. The moving device 1 is a universal wheel. The lifting and leveling mechanism includes an electric telescopic rod 25. A protective pad 26 is arranged at the bottom of the electric telescopic rod 25.

[0029] The stamping device includes a lower die group 2 and an upper die group. A support frame 3 is arranged in the middle of the top rear side of the lower die group 2, a downward pressure cylinder 4 is arranged on the top of the support frame 3, guide columns 5 are arranged on the top of the four corners of the lower die group 2, an extrusion cylinder 6 is arranged on the top of the guide column 5, a first spring 7 is arranged on the outside of the guide column 5, and the first spring 7 is fixedly connected to the lower die group 2. A front guide block 8 is vertically arranged in the center of the two guide columns 5 on the front side of the top of the lower die group 2, and a horizontal rear guide block 9 is arranged corresponding to the upper inner side of the front guide block 8 and the support frame 3. A horizontal slide groove 10 is arranged on the inner side of the front guide block 8 and the rear guide block 9, and the slide groove 10 is used for sliding the cover sheet 11.

[0030] A slot 12 is provided at the center of the top of the lower die 2, a positioning tube 13 is provided at the top of the slot 12, the positioning tube 13 is connected to the slot 12 via a clamping block 14, and the bottom of the positioning tube 13 passes through the lower die, i.e., the inside of the discharge base, and is connected to a downwardly inclined discharge pipe 15.

[0031] An upper mold assembly 16 is arranged at the end of the telescopic rod at the bottom of the downward pressure cylinder 4, a mold fixing portion 17 is arranged at the center of the bottom of the upper mold assembly 16, a front guide block limiting portion 24 is arranged at the center of the front side of the mold fixing portion 17, a stamping mold 18 is arranged at the bottom of the mold fixing portion 17, guide cylinders 19 are arranged at the bottom of the four corners of the upper mold assembly 16, and through holes 20 are arranged at the corresponding positions of the guide cylinders 19 in the four corners of the upper mold assembly 16, and the top of the through hole 20 is connected to a blocking cover 21 through a hinged connector.

[0032] A movable plate 22 is arranged at the bottom inner end of the through hole 20, and the top of the movable plate 22 is connected to a second spring 23. A guide cylinder 19 is arranged at the circumference of the bottom of the through hole 20, and a slideway is arranged in the guide cylinder 19. The slideway fits with the extrusion cylinder 6, and the guide cylinder 19 is slidably connected with the extrusion cylinder 6.

[0033] The support frame 3 includes a vertically arranged H-shaped support plate, and a downward pressure cylinder 4 fixing plate is horizontally arranged on the top of the support plate; the H-shaped support plate includes vertical plates corresponding to the left and right sides and a horizontal plate between the vertical plates corresponding to the position of the front guide block 8.

[0034] Working principle: The positioning cylinder 13 and the stamping die 18 of the device are vertical. During the processing, the cover sheet material is pushed into the slideway, and the stamping die 18 contacts and presses down with the top of the cover sheet material 11 at the top of the positioning cylinder 13. The cover sheet material 11 is squeezed into the required shape, and the finished product comes out of the discharge pipe 15 for rapid collection. The cover sheet material 11 is pushed to slide in the slideway, and the stamping position of the cover sheet material 11 is changed to achieve rapid stamping work. It replaces the manual positioning and placement of cylindrical lithium batteries by the staff to achieve rapid stamping and unloading.

[0035] The guide cylinder 19 and the guide pillar 5 of the device are guided by the guide pillar 5 and the extrusion cylinder 6 sliding inside the guide cylinder 19 when the upper and lower molds are punched down and closed. At this time, when the extrusion cylinder 6 enters the inner side of the through hole 20, it presses the movable plate 22 upward. At this time, the second spring 23 elastically squeezes the movable plate 22, and the first spring 7 elastically squeezes the guide cylinder 19, thereby achieving shock absorption and buffering, so that the impact force of the mutual collision at the moment of closing the upper and lower molds is reduced, the impact on the mold is effectively reduced, and the service life of the mold is increased.

[0036] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned implementation cases, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein by equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery cover stamping die, characterized in that: The invention comprises a discharge base and a punching device, wherein the punching device comprises an upper die set and a lower die set, a support frame (3) is arranged at the middle of the top rear side of the lower die set (2), a downward pressure cylinder (4) is arranged at the top of the support frame (3), a front guide block (8) is arranged at the front end of the top of the lower die set (2), a transverse rear guide block (9) is arranged at the inner root of the support frame (3), a slide groove (10) is arranged on the inner side of the front guide block (8) and the inner side of the rear guide block (9), respectively, the slide groove (10) is used to support and guide the cover plate material (11) to slide forward, a positioning cylinder is arranged at the center of the top of the lower die set (2) to connect to a discharge pipe (15) inclined downward, and the discharge pipe (15) is arranged at the lower end of the discharge base and extends out of the discharge base; A die fixing portion (17) is arranged at the center of the bottom of the upper die assembly (16), a punching die (18) is arranged at the bottom of the die fixing portion (17), and guide mechanisms are arranged at the four corners of the upper die assembly and the four corners of the lower die assembly.

2. The battery cover stamping die according to claim 1, characterized in that: Guide cylinders (19) are arranged at the bottom of the four corners of the upper mold assembly (16); through holes (20) are arranged at positions corresponding to the guide cylinders (19) at the four corners of the upper mold assembly (16); the top of the through hole (20) is engaged with a blocking cover (21) and is fixedly connected to the upper mold assembly (16) via a hinged connection piece; a movable plate (22) is arranged at the bottom end of the inner side of the through hole (20); the top of the movable plate (22) is connected to a second spring (23); and guide cylinders (19) are arranged around the bottom of the through hole (20); Guide columns (5) are arranged at the top of the four corners of the lower die assembly (2), an extrusion cylinder (6) is arranged at the top of the guide columns (5), a first spring (7) is sleeved on the guide columns (5), the first spring (7) is fixedly connected to the lower die assembly (2), and the extrusion cylinder is embedded in the guide cylinder.

3. The battery cover stamping die according to claim 1, characterized in that: A bottom plate (27) is arranged at the bottom of the discharge base, and moving devices (1) and lifting and leveling mechanisms are evenly distributed at four corners of the bottom of the bottom plate (27).

4. The battery cover stamping die according to claim 1, characterized in that: A clamping groove (12) is arranged around the positioning cylinder, a positioning cylinder (13) is installed on the top of the clamping groove (12), and the positioning cylinder (13) is clamped and connected with the clamping groove (12) via a clamping block (14).

5. The battery cover stamping die according to claim 1, characterized in that: The support frame (3) comprises an H-shaped support plate arranged vertically, and a downward pressure cylinder (4) fixing plate is arranged horizontally on the top of the support plate; the H-shaped support plate comprises vertical plates corresponding to the left and right sides and a horizontal plate between the vertical plates corresponding to the position of the front guide block (8).

6. The battery cover stamping die according to claim 3, characterized in that: The mold fixing part (17) is A limiting portion (24) of the front guide block (8) is arranged at the central position of the side, and the lifting and leveling mechanism is an electric telescopic rod (25), and a protective pad (26) is arranged at the bottom of the electric telescopic rod (25).

7. A battery cover stamping die according to claim 2, characterized in that: The connecting piece is a pin mechanism.

8. The battery cover stamping die according to claim 2, characterized in that: A slideway is arranged in the guide cylinder (19), the slideway fits with the extrusion cylinder (6), and the guide cylinder (19) and the extrusion cylinder (6) are slidably connected.

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