A composite layer die for precision stamping of a battery cover plate

Abstract

The utility model provides a kind of composite layer mould of battery cover plate precision stamping, it is related to stamping die technical field, including die holder, the upper surface of die holder is provided with adjusting assembly, the upper surface of die holder is fixedly installed with guide rod, the top of guide rod is fixedly installed with top plate, the upper surface of top plate is fixedly installed with hydraulic cylinder, the lower surface of slide is installed with punch fixed plate, the lower surface of punch fixed plate is sequentially installed with half-cut punch, precision punch, the lower surface of punch fixed plate is provided with positioning assembly, the utility model half-cut punch is first carried out to battery cover plate and is cut half, battery cover plate is moved to the lower end of precision punch, and then complete stamping work, this device first stamping is completed and cuts material 50%, and the second stamping is completed this hole cutting work, at this time punch reduces the friction force of cutting material and stripping material by composite coating process. Solve the punch fracture when the stamping aperture is less than the thickness of the plate, which leads to the inability to complete the work of stamping the lithium battery cover plate.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, and more specifically, to a composite layer die for precision stamping of battery cover plates. Background Technology

[0002] The battery cover is a key component of batteries (especially lithium batteries), primarily used for sealing, current conduction, pressure relief protection, and structural support. Its design and materials directly affect the battery's safety and performance. During battery cover processing, punching is required. In existing technology, the punch diameter should be 1:1 to 1.5 times the sheet thickness; for non-ferrous metals, the punch diameter should be 0.8 to 0.9 times the sheet thickness. Currently, the raw material for lithium battery covers is 2.0mm thick SUS stainless steel, with a 1.2mm hole diameter. If the punch diameter is smaller than the sheet thickness, the punch will break, making it impossible to complete the lithium battery cover stamping process. While machining can achieve this, it has low production efficiency, cannot meet market demand, and has high production costs. Utility Model Content

[0003] The main objective of this invention is to provide a composite layer mold for precision stamping of battery cover plates. This effectively solves the problem in the prior art where the punch diameter should be 1:1 to 1.5 times the plate thickness, and for stamping non-ferrous metal materials, the punch diameter should be 0.8 to 0.9 times the plate thickness. Currently, the raw material for lithium battery cover plates is 2.0mm thick SUS stainless steel, and the hole diameter is 1.2mm. If the punch diameter is smaller than the plate thickness, the punch will break, making it impossible to complete the stamping of lithium battery cover plates. While machining can achieve this, the production efficiency is low, failing to meet market demand and resulting in high production costs.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a composite layer mold for precision stamping of battery cover plates, including a mold base, an adjustment component provided on the upper surface of the mold base, a guide rod fixedly installed on the upper surface of the mold base, a top plate fixedly installed at the top end of the guide rod, a hydraulic cylinder fixedly installed on the upper surface of the top plate, a slide plate slidably installed in the middle of the guide rod, the output end of the hydraulic cylinder being located on the upper surface of the slide plate, a punch fixing plate installed on the lower surface of the slide plate, a half-cut punch and a precision punch sequentially installed on the lower surface of the punch fixing plate, and a positioning component provided on the lower surface of the punch fixing plate.

[0005] Preferably, the lower surface of the mold base is equipped with mold feet, and the surface of the mold base is provided with a discharge hole.

[0006] Preferably, the adjustment assembly includes a servo motor, a mounting groove, and a concave template. The servo motor is fixedly mounted on one side surface of the mold base, the mounting groove is formed on the upper surface of the mold base, and the concave template is slidably mounted on the upper surface of the mold base.

[0007] Preferably, a lead screw is installed at the output end of the servo motor, and a lead screw sleeve is threaded in the middle of the lead screw. The lead screw sleeve is connected to the concave template, and the concave template has a through-hole for feeding.

[0008] Preferably, a slider is fixedly installed on the lower surface of the concave template, and a groove is provided on the upper surface of the mold base, with the slider slidably installed inside the groove.

[0009] Preferably, the positioning component includes a return spring, which is fixedly mounted on the lower surface of the punch fixing plate.

[0010] Preferably, a pad is fixedly installed at the lower end of the reset spring, and a pressure plate is installed on the lower surface of the pad.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] (1) The battery cover is placed inside the concave template. At this time, the slide plate is driven downward by the output end of the hydraulic cylinder, which can drive the slide plate downward so that the half-cutting punch cuts half of the battery cover. At this time, the lead screw is driven to rotate by the output end of the servo motor, so that the lead screw sleeve moves in the middle of the lead screw, which can drive the concave template to move the battery cover to the lower end of the precision punch, and then perform the complete punching work. This device completes the punching of 50% of the material in the first punch, and the punching of the hole is completed in the second punch. At this time, the punch uses a composite coating process to reduce the friction between the punching material and the stripping material. This solves the problem that the punch will break when the punching hole diameter is smaller than the plate thickness, which makes it impossible to complete the punching of the lithium battery cover.

[0013] (2) When the stamping work is carried out, the pressure plate will be driven to move downward first, so that the pressure plate presses on the upper surface of the battery cover, which will fix the battery cover and prevent the battery cover from shifting during the stamping work. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of a composite layer mold for precision stamping of a battery cover according to this utility model;

[0015] Figure 2 This is a side view of the overall structure of a composite layer mold for precision stamping of a battery cover according to this utility model;

[0016] Figure 3 This is a schematic diagram of the mold base structure for a composite layer mold for precision stamping of a battery cover according to this utility model;

[0017] Figure 4 This is a schematic diagram of the concave template structure of a composite layer mold for precision stamping of a battery cover plate according to this utility model.

[0018] In the diagram: 1. Mold base; 2. Mold foot; 3. Adjustment component; 301. Servo motor; 302. Mounting slot; 303. Die plate; 304. Discharge hole; 305. Lead screw; 306. Lead screw sleeve; 4. Discharge hole; 5. Slide groove; 6. Guide rod; 7. Top plate; 8. Hydraulic cylinder; 9. Slide plate; 10. Punch fixing plate; 11. Precision punch; 12. Positioning component; 1201. Return spring; 1202. Pad plate; 1203. Pressure plate; 13. Slider; 14. Half-cut punch. Detailed Implementation

[0019] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0020] like Figure 1 , 2 As shown, a composite layer mold for precision stamping of battery cover plates includes a mold base 1. An adjustment component 3 is provided on the upper surface of the mold base 1. A guide rod 6 is fixedly installed on the upper surface of the mold base 1. A top plate 7 is fixedly installed at the top end of the guide rod 6. A hydraulic cylinder 8 is fixedly installed on the upper surface of the top plate 7. A slide plate 9 is slidably installed in the middle of the guide rod 6. The output end of the hydraulic cylinder 8 is located on the upper surface of the slide plate 9. A punch fixing plate 10 is installed on the lower surface of the slide plate 9. A half-cut punch 14 and a precision punch 11 are sequentially installed on the lower surface of the punch fixing plate 10. A positioning component 12 is provided on the lower surface of the punch fixing plate 10.

[0021] like Figure 1 As shown, a die foot 2 is installed on the lower surface of the die base 1, and a discharge hole 4 is installed through the surface of the die base 1 to facilitate the discharge of waste material generated by stamping.

[0022] like Figure 2 , 3As shown in Figure 4, the adjustment component 3 includes a servo motor 301, a mounting groove 302, and a concave template 303. The servo motor 301 is fixedly mounted on one side surface of the mold base 1. The mounting groove 302 is formed on the upper surface of the mold base 1. The concave template 303 is slidably mounted on the upper surface of the mold base 1. A lead screw 305 is installed at the output end of the servo motor 301. A lead screw sleeve 306 is threadedly installed in the middle of the lead screw 305. The lead screw sleeve 306 is connected to the concave template 303. A discharge hole 304 is formed through the concave template 303. A slider 13 is fixedly mounted on the lower surface of the concave template 303. A sliding groove 5 is formed on the upper surface of the mold base 1. The slider 13 is slidably mounted inside the sliding groove 5. The positioning component 12 includes a return spring 1201, which is fixedly mounted on the punch fixing plate 1. On the lower surface of the 0, a pad 1202 is fixedly installed at the lower end of the return spring 1201. A pressure plate 1203 is installed on the lower surface of the pad 1202. The battery cover is placed inside the concave template 303. At this time, the output end of the hydraulic cylinder 8 drives the slide plate 9 to move downward, so that the half-cutting punch 14 punches half of the battery cover. Then, the output end of the servo motor 301 drives the lead screw 305 to rotate, so that the lead screw sleeve 306 moves in the middle of the lead screw 305, which drives the concave template 303 to move, moving the battery cover to the lower end of the precision punch 11 for complete punching. This device completes 50% of the punching material in the first punch, and the second punch completes the punching of the hole. At this time, the punch uses a composite coating process to reduce the friction between the punching material and the stripper. This solves the problem that the punch will break when the punching hole diameter is smaller than the plate thickness, which would prevent the lithium battery cover from being punched. Furthermore, during the stamping process, the pressure plate 1203 is first driven to move downwards, pressing the pressure plate 1203 onto the upper surface of the battery cover, thus fixing the battery cover and preventing it from shifting during the stamping process.

[0023] The working principle of this composite layer mold for precision stamping of battery cover plates:

[0024] In use, when stamping the battery cover, the battery cover is first placed inside the concave template 303. The output of the hydraulic cylinder 8 drives the sliding plate 9 downwards, causing the half-cutting punch 14 to cut half of the battery cover. Then, the output of the servo motor 301 drives the lead screw 305 to rotate, causing the lead screw sleeve 306 to move in the middle of the lead screw 305. This moves the concave template 303, placing the battery cover directly below the precision punch 11 for complete stamping. This device completes 50% of the material cutting in the first stamping, and the second stamping completes the hole cutting. The punch uses a composite coating process to reduce friction between the punched material and the stripper. This solves the problem of punch breakage when the punching hole diameter is smaller than the plate thickness, preventing the complete stamping of the lithium battery cover. Furthermore, during the stamping process, the pressure plate 1203 is first driven to move downwards, pressing the pressure plate 1203 onto the upper surface of the battery cover, thus fixing the battery cover and preventing it from shifting during the stamping process.

[0025] The above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A compound layer die for precision stamping of a battery cover plate, comprising a die seat (1), characterized in that: An adjustment component (3) is provided on the upper surface of the mold base (1). A guide rod (6) is fixedly installed on the upper surface of the mold base (1). A top plate (7) is fixedly installed at the top end of the guide rod (6). A hydraulic cylinder (8) is fixedly installed on the upper surface of the top plate (7). A slide plate (9) is slidably installed in the middle of the guide rod (6). The output end of the hydraulic cylinder (8) is located on the upper surface of the slide plate (9). A punch fixing plate (10) is installed on the lower surface of the slide plate (9). A half-cut punch (14) and a precision punch (11) are sequentially installed on the lower surface of the punch fixing plate (10). A positioning component (12) is provided on the lower surface of the punch fixing plate (10).

2. The composite layer mold for precision stamping of a battery cover plate according to claim 1, characterized in that; The mold base (1) has a mold foot (2) installed on its lower surface, and a discharge hole (4) is installed through the surface of the mold base (1).

3. The composite layer mold for precision stamping of a battery cover plate according to claim 1, characterized in that: The adjustment component (3) includes a servo motor (301), a mounting groove (302), and a concave template (303). The servo motor (301) is fixedly installed on one side surface of the mold base (1), the mounting groove (302) is opened on the upper surface of the mold base (1), and the concave template (303) is slidably installed on the upper surface of the mold base (1).

4. The composite layer mold for precision stamping of a battery cover plate according to claim 3, characterized in that: The output end of the servo motor (301) is equipped with a lead screw (305), and a lead screw sleeve (306) is threaded in the middle of the lead screw (305). The lead screw sleeve (306) is connected to the concave template (303), and the concave template (303) has a through-hole (304).

5. The composite layer mold for precision stamping of a battery cover plate according to claim 4, characterized in that: A slider (13) is fixedly installed on the lower surface of the concave template (303), and a groove (5) is opened on the upper surface of the mold base (1). The slider (13) is slidably installed inside the groove (5).

6. The composite layer mold for precision stamping of a battery cover plate according to claim 1, characterized in that: The positioning component (12) includes a return spring (1201), which is fixedly installed on the lower surface of the punch fixing plate (10).

7. The composite layer mold for precision stamping of a battery cover plate according to claim 6, characterized in that: A pad (1202) is fixedly installed at the lower end of the reset spring (1201), and a pressure plate (1203) is installed on the lower surface of the pad (1202).

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