A punch forming device for zinc cylinders

Abstract

This utility model discloses a stamping forming device for zinc cylinders, comprising a frame, a stamping die assembly, and a die cooling system. The top surface of the frame is provided with a stamping platform and a positioning ring groove. The stamping die assembly includes a main drive cylinder, a pressure distribution plate, a floating pressure plate, and a forming die core. An elastic support rod connects the pressure distribution plate and the floating pressure plate. A buffer ring is fitted onto the outer wall of the forming die core and communicates with a hollow cavity through a flow divider. An auxiliary positioning mechanism positions the zinc cylinder blank, a guide assembly ensures the smooth movement of the floating pressure plate, and a coolant circulation pipeline runs through the stamping platform and is connected to a heat dissipation assembly. This application achieves uniform pressure distribution through the elastic support rod and pressure balance cavity, reducing surface defects in the zinc cylinder. The buffer ring and flow divider reduce friction and absorb impact forces, while the cooling system rapidly dissipates heat, ensuring the forming quality and dimensional consistency of the zinc cylinder.

Description

Technical Field

[0001] This utility model relates to the field of zinc cylinder forming technology, specifically to a stamping forming device for zinc cylinders. Background Technology

[0002] With the development of battery manufacturing technology, zinc canisters, as a key structural component in alkaline batteries, have their overall performance directly affected by the efficiency and quality of their forming process and equipment. While some patents related to zinc canister forming have been disclosed in the existing technology, these solutions still have certain limitations.

[0003] In existing technologies, a high-efficiency forming process for battery zinc cylinders involves pre-treating zinc granules with degreasing and release agents, followed by stamping using a hydraulic extruder. This effectively reduces energy consumption and noise while improving mold life and zinc cylinder surface finish. However, this approach primarily focuses on optimizing the material pre-treatment process and does not address the specific structural design of the stamping forming device. Therefore, in actual production, the lack of dedicated automated stamping equipment makes it difficult to achieve continuous, high-precision zinc cylinder forming operations, impacting overall production efficiency and product consistency.

[0004] Furthermore, a ring pressing device for positive electrode powder pressing includes a forming device, a rough ring forming mechanism, and an extrusion and dehumidification mechanism. It can form a manganese ring structure with the required density and hardness through multiple extrusions, and the heating and dehumidification function further enhances the forming effect. Although this device shows good application results in powder forming, its structural design is mainly suitable for pressing positive electrode materials and cannot be directly applied to the stamping process of zinc cylinders. Especially in the zinc cylinder stamping process, higher forming precision and mold fit are required, but this device does not consider the plastic deformation characteristics of metal materials and the stress distribution during stamping, therefore it is not suitable for the high-efficiency and precision forming requirements of zinc cylinders.

[0005] In summary, although there are publicly available solutions for zinc cylinder forming processes and powder pressing equipment in the existing technology, there are still many shortcomings in the specific implementation process: on the one hand, there is a lack of structured equipment design specifically for zinc cylinder stamping; on the other hand, the existing equipment cannot meet the requirements of modern battery manufacturing for high-quality, mass production of zinc cylinders in terms of forming accuracy, automation level and mold adaptability. Utility Model Content

[0006] To address the shortcomings of the prior art, this utility model proposes a stamping forming device for zinc cylinders.

[0007] To achieve the above-mentioned technical effects, the present invention adopts the following solution:

[0008] A stamping forming apparatus for zinc cylinders includes a frame, a stamping die, and a die cooling system. A stamping platform is fixedly mounted on the center of the top surface of the frame, and the top of the stamping platform has an integrally formed positioning annular groove. The stamping die is fixed at the center of the top of the frame and located directly above the stamping platform. The stamping die includes a main drive cylinder, a pressure distribution plate, a floating pressure plate, and a forming die core. The bottom output end of the main drive cylinder is fixedly connected to the pressure distribution plate, and several elastic support rods are evenly distributed along the bottom edge of the pressure distribution plate. The bottom of each elastic support rod is fixedly connected to the top surface of the floating pressure plate, and the bottom of the floating pressure plate is connected to the forming die core via several guide pillars. The top is fixedly connected, and a buffer ring is sleeved on the outer wall of the forming mold core. The outer wall of the buffer ring slides in fit with the inner wall of the positioning ring groove. A hollow cavity is opened inside the forming mold core, and the top of the hollow cavity is connected to the inside of the floating pressure plate. The bottom of the hollow cavity extends to the bottom surface of the forming mold core, and several diversion grooves are evenly opened on the inner wall of the hollow cavity. The diversion grooves extend to the outer wall of the forming mold core and communicate with the inner wall of the buffer ring. The mold cooling system includes a coolant circulation pipeline and a heat dissipation component. The coolant circulation pipeline runs through the inside of the stamping platform and is attached to the bottom wall of the positioning ring groove. The heat dissipation component is fixed to the rear side of the frame and connected to the end of the coolant circulation pipeline.

[0009] Two auxiliary positioning mechanisms are symmetrically arranged on the left and right sides of the top surface of the stamping platform. Each auxiliary positioning mechanism includes a positioning block, an adjusting screw, and a limiting clamp. The positioning block is fixed to the top surface of the stamping platform and has a threaded hole inside. The adjusting screw passes through the threaded hole and is threadedly connected to the positioning block. The inner end of the adjusting screw is rotatably connected to the limiting clamp through a bearing, and the bottom of the limiting clamp slides with the top surface of the stamping platform.

[0010] Two guide components are symmetrically installed on the left and right sides of the top of the frame. Each guide component includes a guide rod and a guide sleeve. The guide rod is fixed to the top of the frame, and the guide sleeve is sleeved on the outer wall of the guide rod. The top of the guide sleeve is fixedly connected to the bottom surface of the floating pressure plate, and the inner wall of the guide sleeve is slidably engaged with the outer wall of the guide rod.

[0011] The floating pressure plate has a pressure balancing chamber inside, and the top of the pressure balancing chamber is connected to the bottom of the elastic support rod. The bottom of the pressure balancing chamber is connected to the top of the hollow cavity through several branch pipes, and the branch pipes are evenly distributed on the bottom surface of the pressure balancing chamber.

[0012] A further preferred embodiment: the elastic support rod includes an outer tube, an inner rod, and a return spring, with the top of the outer tube fixedly connected to the bottom surface of the pressure distribution plate, the bottom of the inner rod fixedly connected to the top surface of the floating pressure plate, and the outer wall of the inner rod slidingly engaged with the inner wall of the outer tube. The return spring is sleeved on the outer wall of the inner rod and located inside the outer tube, with both ends of the return spring abutting against the top inner wall of the outer tube and the top surface of the inner rod, respectively.

[0013] A further preferred embodiment: the buffer ring is made of a high-molecular elastic material, and a buffer gap is formed between the inner wall of the buffer ring and the outer wall of the molding core, and the buffer gap is connected to the hollow cavity through a flow channel.

[0014] A further preferred embodiment: the flow channels are spirally distributed on the inner wall of the molding core, and the bottom of the flow channels extends to the edge of the bottom surface of the molding core.

[0015] A further preferred embodiment: the inner side of the limiting clamp is provided with an anti-slip pad, and the surface of the anti-slip pad is evenly distributed with several protrusions;

[0016] A further preferred embodiment: the outer wall of the guide rod is provided with a wear-resistant coating, and the inner wall of the guide sleeve is provided with a groove that matches the wear-resistant coating.

[0017] A further preferred embodiment: the coolant circulation pipeline includes an inlet pipe, an outlet pipe and several branch pipes, with the inlet pipe and outlet pipe located on the left and right sides of the stamping platform respectively, and the branch pipes evenly distributed inside the stamping platform and in contact with the bottom wall of the positioning ring groove.

[0018] Compared with existing technologies, the beneficial effects are:

[0019] This invention has a simple structure and is easy to use. It can achieve uniform pressure distribution through elastic support rods and pressure balance chambers, reduce surface defects of zinc cylinder, reduce friction and absorb impact force by using buffer rings and diversion grooves, and quickly dissipate heat through cooling system to ensure the forming quality and dimensional consistency of zinc cylinder. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the cross-sectional structure of this utility model.

[0021] Reference numerals: 1. Frame; 2. Stamping platform; 3. Positioning ring groove; 4. Main drive cylinder; 5. Pressure distribution plate; 6. Floating pressure plate; 7. Forming mold core; 8. Elastic support rod; 9. Guide post; 10. Buffer ring; 11. Hollow cavity; 12. Diversion groove; 13. Coolant circulation pipeline; 14. Heat dissipation assembly; 15. Inlet pipe; 16. Outlet pipe; 17. Branch pipeline; 18. Positioning block; 19. Adjusting screw; 20. Limiting clamp; 21. Anti-slip pad; 22. Protrusion; 23. Guide rod; 24. Guide sleeve; 27. Outer tube; 28. Inner rod; 29. ​​Return spring; 30. Pressure balance chamber; 31. Branch pipe; 32. Buffer gap. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] A stamping forming apparatus for zinc cylinders includes a frame 1, a stamping die assembly, and a die cooling system. A stamping platform 2 is fixedly mounted on the center of the top surface of the frame 1, and a positioning ring groove 3 integrally formed therewith is provided on the top of the stamping platform 2. The stamping die assembly is fixed at the center of the top of the frame 1 and located directly above the stamping platform 2. The die cooling system penetrates the interior of the stamping platform 2 and is in contact with the bottom wall of the positioning ring groove 3.

[0024] The stamping die assembly includes a main drive cylinder 4, a pressure distribution plate 5, a floating pressure plate 6, and a forming die core 7. The bottom output end of the main drive cylinder 4 is fixedly connected to the pressure distribution plate 5, and several elastic support rods 8 are evenly distributed along the bottom edge of the pressure distribution plate 5. The bottom of the elastic support rods 8 is fixedly connected to the top surface of the floating pressure plate 6, and the bottom of the floating pressure plate 6 is fixedly connected to the top of the forming die core 7 via several guide posts 9. A buffer ring 10 is fitted onto the outer wall of the forming die core 7, and the outer wall of the buffer ring 10 slides against the inner wall of the positioning ring groove 3. A hollow cavity 11 is formed inside the forming die core 7, the top of which connects to the interior of the floating pressure plate 6, and the bottom of the hollow cavity 11 extends to the bottom surface of the forming die core 7. Several diversion grooves 12 are evenly formed on the inner wall of the hollow cavity 11. The diversion grooves 12 extend to the outer wall of the forming die core 7 and communicate with the inner wall of the buffer ring 10.

[0025] The mold cooling system includes a coolant circulation pipe 13 and a heat dissipation component 14. The coolant circulation pipe 13 runs through the interior of the stamping platform 2 and is attached to the bottom wall of the positioning ring groove 3. The heat dissipation component 14 is fixed to the rear side of the frame 1 and connected to the end of the coolant circulation pipe 13. The coolant circulation pipe 13 includes an inlet pipe 15, an outlet pipe 16, and several branch pipes 17. The inlet pipe 15 and the outlet pipe 16 are located on the left and right sides of the stamping platform 2, respectively. The branch pipes 17 are evenly distributed inside the stamping platform 2 and are attached to the bottom wall of the positioning ring groove 3.

[0026] Two auxiliary positioning mechanisms are symmetrically arranged on the left and right sides of the top surface of the stamping platform 2. Each auxiliary positioning mechanism includes a positioning block 18, an adjusting screw 19, and a limiting clamping plate 20. The positioning block 18 is fixed to the top surface of the stamping platform 2, and a threaded hole is formed inside the positioning block 18. The adjusting screw 19 passes through the threaded hole and is threadedly connected to the positioning block 18. The inner end of the adjusting screw 19 is rotatably connected to the limiting clamping plate 20 via a bearing, and the bottom of the limiting clamping plate 20 slides against the top surface of the stamping platform 2. An anti-slip pad 21 is provided on the inner side of the limiting clamping plate 20. Several protrusions 22 are evenly distributed on the surface of the anti-slip pad 21. The height of each protrusion 22 is 0.2mm to 0.5mm, and the distance between two adjacent protrusions 22 is 1mm to 2mm.

[0027] Two guide assemblies are symmetrically installed on the left and right sides of the top of the frame 1. Each guide assembly includes a guide rod 23 and a guide sleeve 24. The guide rod 23 is fixed to the top of the frame 1, and the guide sleeve 24 is fitted onto the outer wall of the guide rod 23. The top of the guide sleeve 24 is fixedly connected to the bottom surface of the floating pressure plate 6, and the inner wall of the guide sleeve 24 slides against the outer wall of the guide rod 23. The outer wall of the guide rod 23 is coated with a wear-resistant coating, and the inner wall of the guide sleeve 24 has a groove matching the wear-resistant coating, with a groove depth of 0.1 mm to 0.3 mm.

[0028] The elastic support rod 8 includes an outer tube 27, an inner rod 28, and a return spring 29. The top of the outer tube 27 is fixedly connected to the bottom surface of the pressure distribution plate 5, and the bottom of the inner rod 28 is fixedly connected to the top surface of the floating pressure plate 6, with the outer wall of the inner rod 28 slidingly engaging with the inner wall of the outer tube 27. The return spring 29 is sleeved on the outer wall of the inner rod 28 and located inside the outer tube 27, with its two ends abutting against the inner top wall of the outer tube 27 and the top surface of the inner rod 28, respectively.

[0029] The floating pressure plate 6 has a pressure balancing chamber 30 inside. The top of the pressure balancing chamber 30 is connected to the bottom of the elastic support rod 8. The bottom of the pressure balancing chamber 30 is connected to the top of the hollow cavity 11 through several branch pipes 31, which are evenly distributed on the bottom surface of the pressure balancing chamber 30. The buffer ring 10 is made of high-polymer elastic material. A buffer gap 32 is formed between the inner wall of the buffer ring 10 and the outer wall of the molding core 7. The width of the buffer gap 32 is 0.5 mm to 1.0 mm, and the buffer gap 32 is connected to the hollow cavity 11 through the diversion groove 12. The diversion groove 12 is spirally distributed on the inner wall of the molding core 7. The bottom of the diversion groove 12 extends to the edge of the bottom surface of the molding core 7, and the top of the diversion groove 12 is 3 mm to 5 mm away from the top of the hollow cavity 11.

[0030] The working principle is as follows:

[0031] When zinc cylinder blanks need to be stamped, they are first positioned by an auxiliary positioning mechanism. The adjusting screw 19 rotates, pushing the limiting clamp 20 inward. The anti-slip pad 21 on the inner side of the limiting clamp 20 increases friction through the protrusion 22, ensuring the zinc cylinder blank remains stable during stamping. Subsequently, the main drive cylinder 4 moves downward, causing the pressure distribution plate 5 to move synchronously. The pressure distribution plate 5 pushes the floating pressure plate 6 downward via the elastic support rod 8. The return spring 29 inside the elastic support rod 8 acts as a buffer and shock absorber when the floating pressure plate 6 is under force, allowing the floating pressure plate 6 to automatically adjust its pressure distribution according to pressure changes.

[0032] The floating pressure plate 6 drives the forming mold core 7 to descend synchronously via the guide post 9. The buffer ring 10 on the outer wall of the forming mold core 7 slides in contact with the inner wall of the positioning ring groove 3. The pressure balance chamber 30 inside the floating pressure plate 6 guides airflow into the hollow cavity 11 through the branch pipe 31. The airflow then enters the buffer gap 32 through the flow divider 12. The flow divider 12 distributes the airflow along a spiral path on the outer wall of the forming mold core 7. The buffer ring 10 deforms under stress during the forming process and evenly distributes the airflow in the buffer gap 32, effectively reducing the friction between the metal material and the mold, while absorbing some of the impact force and extending the service life of the mold.

[0033] The guiding assembly guides the floating pressure plate 6 through the cooperation of the guide rod 23 and the guide sleeve 24. The wear-resistant coating 25 on the outer wall of the guide rod 23 cooperates with the groove 26 on the inner wall of the guide sleeve 24 to reduce frictional resistance and ensure that the floating pressure plate 6 remains stable during movement. The coolant in the coolant circulation pipe 13 carries away the heat from the stamping platform 2 and dissipates it through the heat dissipation assembly 14. The branch pipes 17 are evenly distributed inside the stamping platform 2 and fit against the bottom wall of the positioning ring groove 3, which can quickly remove the heat generated during the stamping process, keep the mold temperature stable, and ensure the consistency of the zinc cylinder forming dimensions during continuous production.

[0034] In the description of this utility model, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A stamping forming apparatus for zinc cylinders, characterized in that: Includes a frame (1), a stamping platform (2) is fixedly installed in the middle of the top surface of the frame (1), and a positioning ring groove (3) is provided on the top of the stamping platform (2) and is integrated therewith. A stamping module is fixed at the center of the top of the frame (1) and the stamping module is located directly above the stamping platform (2). The stamping module includes a main drive cylinder (4), a pressure distribution plate (5), a floating pressure plate (6), and a forming die core (7). The bottom output end of the main drive cylinder (4) is fixedly connected to the pressure distribution plate (5). Several elastic support rods (8) are evenly distributed on the bottom edge of the pressure distribution plate (5). The bottom of the elastic support rods (8) is fixedly connected to the top surface of the floating pressure plate (6). The bottom of the floating pressure plate (6) is fixedly connected to the top of the forming die core (7) through several guide posts (9). A buffer sleeve (10) is sleeved on the outer wall of the forming die core (7). The outer wall of the buffer sleeve (10) slides in conjunction with the inner wall of the positioning ring groove (3). The molding core (7) has a hollow cavity (11) inside. The top of the hollow cavity (11) is connected to the interior of the floating pressure plate (6), and the bottom of the hollow cavity (11) is connected to the bottom surface of the molding core (7). A number of diversion grooves (12) are evenly opened on the inner wall of the hollow cavity (11). The diversion grooves (12) extend to the outer wall of the molding core (7) and communicate with the inner wall of the buffer ring (10). The stamping platform (2) has a coolant circulation pipe (13) running through it. The coolant circulation pipe (13) is attached to the bottom wall of the positioning ring groove (3). A heat dissipation component (14) is fixed on the rear side of the frame (1). The heat dissipation component (14) is connected to the end of the coolant circulation pipe (13).

2. The stamping forming apparatus for zinc cylinders according to claim 1, characterized in that: The stamping platform (2) has two auxiliary positioning mechanisms symmetrically arranged on the left and right sides of its top surface. The auxiliary positioning mechanism includes a positioning block (18), an adjusting screw (19), and a limiting clamp (20). The positioning block (18) is fixed to the top surface of the stamping platform (2). The positioning block (18) has a threaded hole inside. The adjusting screw (19) passes through the threaded hole and is threadedly connected to the positioning block (18). The inner end of the adjusting screw (19) is rotatably connected to the limiting clamp (20) through a bearing. The bottom of the limiting clamp (20) slides with the top surface of the stamping platform (2).

3. The stamping forming apparatus for zinc cylinders according to claim 2, characterized in that: The inner side of the limiting clamp (20) is provided with an anti-slip pad (21), and the surface of the anti-slip pad (21) is evenly distributed with a number of protrusions (22).

4. The stamping forming apparatus for zinc cylinders according to claim 1, characterized in that: Two guide components are symmetrically installed on the left and right sides of the top of the frame (1). The guide components include a guide rod (23) and a guide sleeve (24). The guide rod (23) is fixed to the top of the frame (1). The guide sleeve (24) is sleeved on the outer wall of the guide rod (23). The top of the guide sleeve (24) is fixedly connected to the bottom surface of the floating pressure plate (6). The inner wall of the guide sleeve (24) is slidably engaged with the outer wall of the guide rod (23).

5. The stamping forming apparatus for zinc cylinders according to claim 4, characterized in that: The outer wall of the guide rod (23) is provided with a wear-resistant coating, and the inner wall of the guide sleeve (24) is provided with a groove that matches the wear-resistant coating.

6. The stamping forming apparatus for zinc cylinders according to claim 1, characterized in that: The elastic support rod (8) includes an outer tube (27), an inner rod (28), and a return spring (29). The top of the outer tube (27) is fixedly connected to the bottom surface of the pressure distribution plate (5), and the bottom of the inner rod (28) is fixedly connected to the top surface of the floating pressure plate (6). The outer wall of the inner rod (28) is slidably fitted with the inner wall of the outer tube (27). The return spring (29) is sleeved on the outer wall of the inner rod (28) and located inside the outer tube (27). The two ends of the return spring (29) abut against the inner top wall of the outer tube (27) and the top surface of the inner rod (28), respectively.

7. The stamping forming apparatus for zinc cylinders according to claim 1, characterized in that: The floating pressure plate (6) is provided with a pressure balance chamber (30). The top of the pressure balance chamber (30) is connected to the bottom of the elastic support rod (8). The bottom of the pressure balance chamber (30) is connected to the top of the hollow cavity (11) through several branch pipes (31). The branch pipes (31) are evenly distributed on the bottom surface of the pressure balance chamber (30).

8. The stamping forming apparatus for zinc cylinders according to claim 1, characterized in that: The buffer ring (10) is made of a high-molecular elastic material. A buffer gap (32) is formed between the inner wall of the buffer ring (10) and the outer wall of the molding core (7). The buffer gap (32) is connected to the hollow cavity (11) through the diversion groove (12).

9. The stamping forming apparatus for zinc cylinders according to claim 1, characterized in that: The flow divider (12) is spirally distributed on the inner wall of the forming mold core (7), and the bottom of the flow divider (12) extends to the bottom edge of the forming mold core (7).

10. A stamping forming apparatus for zinc cylinders according to claim 1, characterized in that: The coolant circulation pipeline (13) includes an inlet pipe (15), an outlet pipe (16) and several branch pipes (17). The inlet pipe (15) and the outlet pipe (16) are located on the left and right sides of the stamping platform (2) respectively. The branch pipes (17) are evenly distributed inside the stamping platform (2) and fit against the bottom wall of the positioning ring groove (3).

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