Lithium battery cap punch forming die

Abstract

The utility model discloses a lithium battery cap punch forming die, and relates to the technical field of battery production. The device comprises a first mounting frame, a second mounting frame, an upper forming mold and a lower forming mold, a supporting frame is rotationally clamped to the top of the first mounting frame, the second mounting frame is arranged on one side of the first mounting frame, an overturning handle is arranged on one side of the second mounting frame, and a first mounting rod is arranged at one end of the overturning handle; a plurality of lower forming dies are inserted into the peripheral surface of the first mounting rod, a plurality of forming grooves are formed in the top and the bottom of each lower forming die, and a plurality of upper forming dies are arranged at the tops of the lower forming dies. Through the arrangement of the first mounting frame, the second mounting frame, the upper forming mold and the lower forming mold, the problems that after punch forming, the battery caps are usually retained in the forming molds, the demolding operation is tedious, and the single forming mold is difficult to process the battery caps of various sizes at the same time are solved.

Description

Technical Field

[0001] This utility model belongs to the field of battery production technology, and in particular relates to a stamping mold for lithium battery caps. Background Technology

[0002] Lithium-ion batteries are a type of battery that uses lithium metal or lithium alloy as the positive / negative electrode material and a non-aqueous electrolyte solution. They possess advantages such as high energy density, long lifespan, high rated voltage, low self-discharge rate, light weight, strong adaptability to high and low temperatures, and environmental friendliness, leading to their widespread use in various aspects of life. In the production process of lithium-ion batteries, the battery cap is a crucial structural element. It provides a sealing function, preventing alkaline solutions from seeping outwards, and acts as a safety valve to expel high-pressure gases generated at high temperatures. The production and processing of the battery cap requires stamping metal sheets to further shape it. To ensure dimensional accuracy, forming molds are typically used to assist stamping equipment in the cap forming process. However, this process still has the following drawbacks in practical use:

[0003] The utility model disclosed in CN218049820U is a stamping forming device for processing lithium battery caps. The device includes a lower mold, which is fixedly connected to the top of the worktable. It also includes a straightening mechanism with a slider and a push plate. After stamping, the formed battery caps often remain in the lower mold, requiring manual demolding or the installation of a specific structure to demold them. Only after demolding can another batch of battery caps be processed. The structure is complex, the operation is cumbersome, and the stamping forming efficiency is reduced.

[0004] Because lithium battery caps are small in size, in order to improve the forming efficiency of the caps, the mold is usually equipped with multiple stamping forming grooves so that multiple battery caps can be produced in one stamping process. However, in actual use, factories usually need to process batteries of various sizes, so they need battery caps of various sizes. However, the size of battery caps that a single mold can process is relatively fixed, which is not convenient for producing battery caps of various sizes at the same time. Utility Model Content

[0005] The purpose of this utility model is to provide a lithium battery cap stamping mold. By using a first mounting bracket, a second mounting bracket, an upper forming mold, and a lower forming mold, it solves the problem that after stamping, the battery cap usually remains in the forming mold, the demolding operation is cumbersome, and a single forming mold is difficult to process battery caps of various sizes at the same time.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a stamping die for a lithium battery cap, including a first mounting frame, a second mounting frame, an upper forming die, and a lower forming die. A support frame is rotatably snapped onto the top of the first mounting frame. A limit frame is welded and fixed to the top and bottom of one side of the support frame. A second mounting frame is provided on one side of the first mounting frame. A flip handle is provided on one side of the second mounting frame. A first mounting rod is provided at one end of the flip handle. Multiple lower forming dies are inserted into the outer circumference of the first mounting rod. Multiple forming grooves are opened at the top and bottom of each lower forming die. Multiple upper forming dies are provided on the top of the multiple lower forming dies. A second mounting rod is inserted through one end of each of the multiple upper forming dies.

[0008] The limiting bracket can limit the stamping of metal sheets, and the other end of the limiting bracket is inserted into one side of the second mounting bracket. It can support the lower forming mold during stamping, ensuring the stability of the forming mold during stamping. After one stamping process, the positioning of the lower forming mold can be released by rotating the support bracket, and then the flip handle can be rotated to flip the lower forming mold, which can quickly move the unused forming slot to the upper side, so as to facilitate the rapid forming process of the next batch of battery caps. When stamping the next batch of battery caps, the stress generated by stamping, air pressure, and the weight of the battery caps themselves can quickly demold the previous batch of battery caps without the need for an additional demolding structure, reducing the cost of forming molds and improving the processing efficiency of battery caps. The operator can assemble different models of upper and lower forming molds as needed, and position multiple upper and lower forming molds by tightening the first and second positioning bolts, so that multiple battery caps of different sizes can be processed simultaneously during stamping, improving the flexibility of forming mold use.

[0009] Furthermore, a rotating handle is welded and fixed to one end of the top of the support frame, the limiting frame at the bottom of one side of the support frame is attached to the bottom of multiple lower forming molds, and the limiting frame at the top of one side of the support frame is suspended from the top of multiple lower forming molds.

[0010] During stamping, rotate the handle to make the bottom limit bracket fit against the bottom of the lower forming mold and the top limit bracket fit against the top of the metal sheet, thus supporting the lower forming mold and positioning the metal sheet to ensure stability during stamping.

[0011] Furthermore, a connecting rod is welded and fixed to one end of the flip handle, and the connecting rod is inserted through and inserted into one side of the second mounting bracket. One end of the first mounting rod is welded and fixed to the other end of the connecting rod relative to the flip handle. A first positioning bolt is screwed and fixed to the other end of the first mounting rod relative to the connecting rod.

[0012] Workers can assemble different types of lower forming molds as needed and insert them into the outer circumference of the first mounting rod. By tightening the first positioning bolt, multiple lower forming molds can be positioned, enabling the simultaneous processing of battery caps of various sizes during stamping, thus improving the flexibility of mold use.

[0013] Furthermore, each of the upper forming molds has mounting holes at both ends of its top, and multiple stamping blocks are welded and fixed to the bottom of the upper forming mold. The multiple stamping blocks are suspended from the top of multiple forming grooves, and a first positioning hole is provided through one end of each upper forming mold.

[0014] The upper forming mold and the stamping device can be connected through the mounting hole. The stamping device drives the upper forming mold to move and stamp the metal sheet.

[0015] Furthermore, the second mounting rod is inserted through multiple first positioning holes, and both ends of the second mounting rod are screwed and fixed with second positioning bolts, which are attached to one side of an upper forming mold.

[0016] Workers can assemble different models of upper forming molds as needed and insert them into the outer circumference of the second mounting rod. By tightening the second positioning bolts, multiple upper forming molds can be positioned, enabling the simultaneous processing of battery caps of various sizes during stamping, thus improving the flexibility of mold use.

[0017] Furthermore, each of the lower forming molds has a second positioning hole on one side, and each forming groove has a vent hole. The forming groove at the top of the lower forming mold is connected to the forming groove at the bottom of the lower forming mold through the vent hole. The first mounting rod is inserted through the second positioning hole, and the first positioning bolt is attached to one side of a lower forming mold.

[0018] After a stamping process, the support frame is rotated to release the positioning of the lower forming mold, and then the flip handle is rotated to flip the lower forming mold, which can quickly move the unused forming slot to the upper side, making it easier to quickly form the next batch of battery caps. When stamping the next batch of battery caps, the stress generated by stamping, the air pressure, and the weight of the battery caps themselves can quickly demold the previous batch of battery caps without the need for an additional demolding structure, reducing the cost of forming molds and improving the processing efficiency of battery caps.

[0019] This utility model has the following beneficial effects:

[0020] This invention solves the problem that after stamping, the formed battery caps often remain in the lower mold, requiring manual demolding or the installation of a specific structure to demold them, and only after demolding can another batch of battery caps be formed. This results in complex structures, cumbersome operations, and reduced stamping efficiency. After one stamping process, the support frame is rotated to release the positioning of the lower mold, and then the flip handle is rotated to flip the lower mold and form the next batch of battery caps. When the next batch of battery caps is stamped, the stress generated by stamping, the air pressure, and the weight of the battery caps themselves enable the previous batch of battery caps to be quickly demolded without the need for an additional demolding structure, reducing the cost of the forming mold and improving the processing efficiency of battery caps.

[0021] This invention solves the problem of using a second mounting bracket, an upper forming mold, and a lower forming mold. This addresses the issue that, due to the small size of lithium battery caps, molds typically have multiple stamping grooves to improve forming efficiency, allowing multiple battery caps to be produced in a single stamping operation. However, in practice, factories often need to process batteries of various sizes, requiring battery caps of different sizes. Since a single mold can only process a relatively fixed size of battery cap, it is inconvenient to simultaneously produce multiple sizes. The invention allows workers to assemble upper and lower forming molds of different models as needed, and to position these molds by tightening the first and second positioning bolts. This enables the simultaneous processing of multiple battery caps of different sizes during stamping, improving the flexibility of mold usage. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a diagram showing the state of the lower forming mold during flipping.

[0024] Figure 3 This is a structural diagram of the first mounting bracket of this utility model;

[0025] Figure 4 This is a structural diagram of the second mounting bracket of this utility model;

[0026] Figure 5 This is a structural diagram of the upper forming mold of this utility model;

[0027] Figure 6 This is a cross-sectional view of the molding die of this utility model.

[0028] Figure label:

[0029] 1. First mounting bracket; 101. Support bracket; 102. Limiting bracket; 103. Rotating handle; 2. Second mounting bracket; 201. Flip handle; 202. Connecting rod; 203. First mounting rod; 204. First positioning bolt; 3. Upper forming mold; 301. First positioning hole; 302. Stamping block; 303. Mounting hole; 304. Second mounting rod; 305. Second positioning bolt; 4. Lower forming mold; 401. Forming groove; 402. Vent hole; 403. Second positioning hole. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0031] Please see Figure 1-6 As shown, this utility model is a lithium battery cap stamping forming mold, including a first mounting frame 1, a second mounting frame 2, an upper forming mold 3 and a lower forming mold 4. The top of the first mounting frame 1 is rotatably snapped with a support frame 101. The top and bottom of one side of the support frame 101 are welded and fixed with a limit frame 102. The first mounting frame 1 is provided with a second mounting frame 2 on one side. The second mounting frame 2 is provided with a flip handle 201 on one side. The flip handle 201 is provided with a first mounting rod 203 at one end. Multiple lower forming molds 4 are inserted into the outer circumference of the first mounting rod 203. Multiple forming grooves 401 are opened at the top and bottom of each lower forming mold 4. Multiple upper forming molds 3 are provided on the top of the multiple lower forming molds 4. A second mounting rod 304 is inserted through one end of the multiple upper forming molds 3.

[0032] Workers retrieve multiple upper forming dies 3 and lower forming dies 4 of different models as needed, inserting the first mounting rod 203 through the lower forming dies 4 and positioning them. Then, the second mounting rod 304 passes through the upper forming dies 3 and positions them. The upper forming dies 3 are then connected to the stamping device. During stamping, the metal sheet adheres to the upper side of the lower forming dies 4. The support frame 101 is rotated to limit and support the metal sheet and the lower forming dies 4, controlling the stamping device to move the upper forming dies 3 downwards. The sheet metal is stamped, causing the stamped battery cap to remain in the forming groove 401. The support frame 101 is rotated in the opposite direction to release the positioning of the lower forming mold 4. Then, the flip handle 201 is rotated to flip the lower forming mold 4, quickly moving the unused forming groove 401 to the upper side. The metal sheet is then placed on the upper side of the lower forming mold 4 again and positioned by the support frame 101. The next batch of battery caps is then stamped by the stamping device. The stress generated by the stamping, the air pressure, and the weight of the battery caps themselves cause the previous batch of battery caps to be quickly demolded.

[0033] Among them, such as Figure 1-4As shown, a rotating handle 103 is welded and fixed to one end of the top of the support frame 101. A limiting frame 102 on the bottom side of the support frame 101 is attached to the bottom of multiple lower forming molds 4. The limiting frame 102 on the top side of the support frame 101 is suspended from the top of multiple lower forming molds 4. A connecting rod 202 is welded and fixed to one end of the flip handle 201. The connecting rod 202 is inserted through and connected to one side of the second mounting frame 2. One end of the first mounting rod 203 is welded and fixed to the other end of the connecting rod 202 relative to the flip handle 201. A first positioning bolt 204 is screwed and fixed to the other end of the first mounting rod 203 relative to the connecting rod 202.

[0034] As needed, the first mounting bracket 1 and the second mounting bracket 2 are installed and fixed in suitable positions. During the stamping process, the rotating handle 103 is rotated so that the bottom limiting bracket 102 is attached to the bottom of the lower forming mold 4 and the top limiting bracket 102 is attached to the top of the metal sheet to support the lower forming mold 4 and limit the metal sheet. After the stamping is completed, the support bracket 101 is rotated in the opposite direction to release the positioning of the lower forming mold 4. Then, the flip handle 201 is rotated to flip the lower forming mold 4, move the unused forming groove 401 to the upper side, and place the metal sheet on the upper side of the lower forming mold 4 again. The support bracket 101 is used to position it, and the next batch of battery caps is stamped by the stamping device. The stress generated by the stamping, the air pressure, and the weight of the battery caps themselves make the previous batch of battery caps quickly demolded.

[0035] Among them, such as Figure 1 , 2 As shown in Figures 5 and 6, each upper forming mold 3 has mounting holes 303 at both ends of its top. Multiple stamping blocks 302 are welded and fixed to the bottom of the upper forming mold 3. The multiple stamping blocks 302 are suspended from the top of multiple forming grooves 401. Each upper forming mold 3 has a first positioning hole 301 through one end. A second mounting rod 304 is inserted through the multiple first positioning holes 301. Both ends of the second mounting rod 304 are screwed and fixed with second positioning bolts 305. The second positioning bolts 305 are attached to one side of an upper forming mold 3.

[0036] Each lower forming mold 4 has a second positioning hole 403 on one side, and each forming groove 401 has a vent hole 402. The forming groove 401 at the top of the lower forming mold 4 is connected to the forming groove 401 at the bottom of the lower forming mold 4 through the vent hole 402. The first mounting rod 203 is inserted into the second positioning hole 403, and the first positioning bolt 204 is attached to one side of a lower forming mold 4.

[0037] Workers take multiple upper forming molds 3 and lower forming molds 4 of different models as needed, so that the first mounting rod 203 passes through multiple lower forming molds 4, and positions the lower forming molds 4 by tightening the first positioning bolt 204. Then, according to the model of the lower forming mold 4, the corresponding upper forming mold 3 is inserted into the outer circumference of the second mounting rod 304, and positions the upper forming mold 3 by tightening the second positioning bolt 305. The upper forming mold 3 is then connected to the stamping device through the mounting hole 303. During the stamping process, the stamping device drives the upper forming mold 3 to move downward, so that the stamping forming block 302 quickly presses the surface of the metal sheet, cuts the metal sheet, and puts the cut metal sheet into the forming groove 401. The metal sheet is extruded and formed by the forming groove 401 and the stamping forming block 302.

[0038] The specific working principle of this utility model is as follows: The first mounting bracket 1 and the second mounting bracket 2 are installed and fixed in suitable positions as needed. Multiple upper forming molds 3 and lower forming molds 4 of different models are taken as needed, so that the first mounting rod 203 passes through the multiple lower forming molds 4. The lower forming molds 4 are positioned by tightening the first positioning bolt 204. Then, according to the model of the lower forming mold 4, the corresponding upper forming mold 3 is inserted into the outer circumference of the second mounting rod 304, and the upper forming mold 3 is positioned by tightening the second positioning bolt 305. The upper forming mold 3 is connected to the stamping device through the mounting hole 303. The metal sheet is placed on the upper side of the lower forming mold 4. The handle 103 is rotated to make the bottom limiting bracket 102 fit against the bottom of the lower forming mold 4, and the top limiting bracket 102 fit against the top of the metal sheet. The lower forming mold 4 provides support and limits the metal sheet. The stamping device controls the upper forming mold 3 to move downward, so that the stamping forming block 302 quickly presses the surface of the metal sheet, cuts the metal sheet, and puts the cut metal sheet into the forming groove 401. The metal sheet is extruded and formed by the forming groove 401 and the stamping forming block 302. The support frame 101 is rotated in the opposite direction to release the positioning of the lower forming mold 4. Then, the flip handle 201 is rotated to flip the lower forming mold 4, move the unused forming groove 401 to the upper side, and place the metal sheet on the upper side of the lower forming mold 4 again. The support frame 101 positions it, and the stamping device stamps the next batch of battery caps. The stress generated by the stamping, the air pressure, and the weight of the battery caps themselves cause the previous batch of battery caps to be quickly demolded.

[0039] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications, equivalent substitutions, or improvements made to the technical solutions described in the foregoing embodiments, or to some of the technical features, shall fall within the protection scope of the present utility model.

Claims

1. A lithium battery cap stamping die, comprising a first mounting bracket (1), a second mounting bracket (2), an upper forming die (3), and a lower forming die (4), characterized in that: The first mounting bracket (1) is rotatably connected to a support bracket (101) at the top. The support bracket (101) has a limit bracket (102) welded to the top and bottom of one side. The first mounting bracket (1) has a second mounting bracket (2) on one side. The second mounting bracket (2) has a flip handle (201) on one side. The flip handle (201) has a first mounting rod (203) at one end. The first mounting rod (203) has multiple lower forming molds (4) inserted into its outer circumference. Each lower forming mold (4) has multiple forming grooves (401) at its top and bottom. Multiple upper forming molds (3) are provided on the top of the multiple lower forming molds (4). A second mounting rod (304) is inserted through one end of each of the multiple upper forming molds (3).

2. The lithium battery cap stamping die according to claim 1, characterized in that: A rotating handle (103) is welded and fixed at one end of the top of the support frame (101). The limiting frame (102) at the bottom of one side of the support frame (101) is attached to the bottom of multiple lower forming molds (4). The limiting frame (102) at the top of one side of the support frame (101) is suspended from the top of multiple lower forming molds (4).

3. The lithium battery cap stamping die according to claim 1, characterized in that: One end of the flip handle (201) is welded and fixed with a connecting rod (202), the connecting rod (202) is inserted through and inserted into one side of the second mounting bracket (2), one end of the first mounting rod (203) is welded and fixed to the other end of the connecting rod (202) relative to the flip handle (201), and the other end of the first mounting rod (203) relative to the connecting rod (202) is screwed and fixed with a first positioning bolt (204).

4. The lithium battery cap stamping die according to claim 1, characterized in that: Each of the upper forming molds (3) has mounting holes (303) at both ends of its top. Multiple stamping blocks (302) are welded and fixed to the bottom of the upper forming molds (3). The multiple stamping blocks (302) are suspended above the top of multiple forming grooves (401). Each of the upper forming molds (3) has a first positioning hole (301) through one end.

5. The lithium battery cap stamping die according to claim 4, characterized in that: The second mounting rod (304) is inserted through multiple first positioning holes (301). Both ends of the second mounting rod (304) are screwed and fixed with second positioning bolts (305). The second positioning bolts (305) are attached to one side of an upper forming mold (3).

6. The lithium battery cap stamping die according to claim 3, characterized in that: Each of the lower forming molds (4) has a second positioning hole (403) on one side, and each forming groove (401) has a vent hole (402). The forming groove (401) at the top of the lower forming mold (4) is connected to the forming groove (401) at the bottom of the lower forming mold (4) through the vent hole (402). The first mounting rod (203) is inserted through the second positioning hole (403), and the first positioning bolt (204) is attached to one side of a lower forming mold (4).

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