Die for battery shell

Abstract

The utility model discloses a mold for a battery shell, and belongs to the technical field of molds. The device mainly comprises a base; the lower mold assembly is arranged on the base, and the lower mold assembly is provided with a bottom plate suitable for bearing a battery shell; the upper die assembly is arranged above the lower die assembly; the demolding assembly is arranged on the lower mold assembly and comprises at least two groups of vertical rods, and the vertical rods penetrate through the bottom plate; the demolding plate is mounted at the top of the vertical rod, and a groove is formed in the demolding plate; the compression springs are arranged between the bottom of the demolding plate and the top of the bottom plate, and the compression springs are arranged outside the vertical rods in a sleeving mode. According to the mold for the battery shell, through the arrangement of the demolding assembly, after stamping is completed, the battery shell which is deformed due to extrusion or bonded to the upper mold assembly due to stretching is separated from the upper mold assembly, and the effect of demolding the shell after stamping is achieved.

Description

Technical Field

[0001] This application relates to the field of mold technology, specifically a mold for a battery casing. Background Technology

[0002] The battery casing is the external protective structure of the battery, used to wrap and fix the internal components of the battery, and provides multiple functions. Among them, lightweight thin-walled thick battery casing is an important development direction in the field of new energy batteries. It aims to improve the energy density and driving range of the battery by reducing the weight of the casing and optimizing the casing structure. It usually uses lightweight and high-strength materials, such as aluminum alloy.

[0003] In the production process of the shell, molds are required to ensure that the size, shape and surface quality of the shell meet the design requirements.

[0004] For example, the patent with publication number CN218395560U discloses a battery casing stamping die. The die moves the connecting frame and the upper die downward by starting a hydraulic cylinder, thereby completing the stamping process with the cooperation of the lower die. When the lower die is disassembled and replaced, the two pull rings are pulled to move the two pull rods to the side away from each other, and the corresponding vertical plate moves the two insert rods to the side away from each other, so that the two insert rods disengage from the slots, release the fixation of the lower die, and thus disassemble and install the lower die.

[0005] However, in the above-mentioned patent, when the shell is stamped, the shell is deformed or stretched by the pressure of the upper mold, which generates deformation internal stress, making the shell easy to stick to the surface of the upper mold. At this time, it needs to be manually removed from the upper mold, thus reducing production efficiency.

[0006] Therefore, it is necessary to provide a mold for battery casing to solve the above problems.

[0007] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0008] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a mold for a battery casing that achieves the effect of removing the casing after stamping.

[0009] The technical solution adopted by this application to solve its technical problem is: a mold for a battery casing, including a base; a lower mold assembly, which is disposed on the base and has a bottom plate suitable for supporting the battery casing; an upper mold assembly, which is disposed above the lower mold assembly; and a demolding assembly, which is disposed on the lower mold assembly. The demolding assembly includes: at least two sets of vertical rods that penetrate the bottom plate; a demolding template, which is installed on the top of the vertical rods and has grooves; and at least two sets of compression springs, which are disposed between the bottom of the demolding template and the top of the bottom plate and are sleeved on the outside of the vertical rods.

[0010] Furthermore, the lower mold assembly includes a base plate mounted on a base, a mold cavity is provided on the base plate, an ejector rod is provided through the inside of the mold cavity, and a disc is installed on the top of the ejector rod.

[0011] Furthermore, a cavity is provided on one side of the base plate, and a slope is provided on the other side of the base plate.

[0012] Furthermore, a return spring is provided between the bottom of the disc and the bottom wall of the mold cavity, and the return spring is sleeved on the outside of the ejector rod.

[0013] Furthermore, the upper mold assembly includes a base plate disposed above the lower mold assembly, two sets of guide pillars are mounted on the base plate, two sets of guide sleeves are mounted on the base, slots are provided on the guide sleeves, an mounting plate is mounted on the bottom of the base plate, and a punch is mounted on the bottom of the mounting plate.

[0014] Furthermore, the demolding assembly is equipped with a pusher assembly, which includes a connecting plate installed at the bottom of the demolding template. A cylinder is installed at the bottom of the connecting plate, and a pusher plate is installed at the output end of the cylinder. The pusher plate is located on one side of the groove. Two sets of slide rails are installed at the bottom of the demolding template, and the pusher plate is slidably mounted on the slide rails.

[0015] The beneficial effects of this application are: the battery casing mold provided by this application, through the setting of the demolding component, separates the battery casing that is deformed or stretched due to extrusion and stuck to the upper mold component after stamping from the upper mold component, thereby achieving the effect of removing the casing after stamping.

[0016] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0018] In the attached diagram:

[0019] Figure 1 This is an overall schematic diagram of a mold for a battery casing according to this application;

[0020] Figure 2 for Figure 1 A schematic diagram of another perspective on another state;

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 for Figure 1 A schematic diagram from another perspective;

[0023] The following are the labeling elements in the figure:

[0024] 1. Base;

[0025] 2. Upper mold assembly; 21. Base plate; 22. Mounting plate; 23. Punch; 24. Guide post;

[0026] 3. Demolding assembly; 31. Demolding template; 32. Groove; 33. Compression spring; 34. Vertical rod;

[0027] 4. Lower mold assembly; 41. Guide sleeve; 42. Base plate; 43. Mold cavity; 44. Disc;

[0028] 5. Pushing assembly; 51. Connecting plate; 52. Cylinder; 53. Push plate; 54. Slide rail; 55. Inclined ramp; 56. Cavity. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0031] like Figure 1 As shown, this application provides a mold for a battery casing, including a base 1 for connecting to a stamping platform on a stamping production line, and a lower mold assembly 4 for placing the battery casing to be stamped on the base 1.

[0032] The lower mold assembly 4 includes a base plate 42 fixedly mounted on the base 1, and a mold cavity 43 is provided on the base plate 42 to facilitate the placement of the battery housing. A push rod (not shown in the figure) is provided through the inside of the mold cavity 43. A disc 44 is fixedly mounted on the top of the push rod. The disc 44 is used to support the battery housing. A return spring (not shown in the figure) is provided between the bottom of the disc 44 and the bottom wall of the mold cavity 43. The return spring is sleeved on the outside of the push rod.

[0033] In the initial state, the disk 44 is located above the mold cavity 43. When the battery housing is stamped later, the external force on the battery housing is pressed into the mold cavity 43. Then, the battery housing presses down on the disk 44, causing the ejector rod to slide downward in the mold cavity 43. At this time, the return spring is compressed until the battery housing is stamped and the external force disappears. The disk 44, driven by the return spring, pushes the battery housing out of the mold cavity 43.

[0034] Meanwhile, an upper mold assembly 2 is provided above the lower mold assembly 4, which is used to press down the battery casing;

[0035] like Figure 1 As shown, the upper mold assembly 2 includes a base plate 21 disposed above the lower mold assembly 4. The top of the base plate 21 can be connected to a lifting assembly on the stamping production line so that the base plate 21 can be driven to approach the lower mold assembly 4 under the action of the lifting assembly, and the battery casing can be stamped when it approaches the lower mold assembly 4.

[0036] Meanwhile, two sets of guide posts 24 are fixedly installed on the substrate 21, and two sets of guide sleeves 41 are fixedly installed on the base 1. The guide sleeves 41 are provided with slots that are adapted to the guide posts 24, so that when the substrate 21 is close to the lower mold assembly 4, the guide posts 24 are simultaneously driven to insert into the slots on the guide sleeves 41 for guiding operation.

[0037] Meanwhile, a mounting plate 22 is fixedly installed at the bottom of the substrate 21, and a punch 23 is fixedly installed at the bottom of the mounting plate 22. The size of the punch 23 is smaller than the size of the mold cavity 43, so that when the substrate 21 approaches the lower mold assembly 4, the mounting plate 22 synchronously drives the punch 23 to approach the lower mold assembly 4, until the punch 23 drives the battery casing into the mold cavity 43 for stamping.

[0038] Meanwhile, a demolding component 3 is provided between the upper mold assembly 2 and the lower mold assembly 4. The demolding component 3 is used to demold the stamped battery casing.

[0039] like Figure 1As shown, the demolding assembly 3 includes multiple sets of vertical rods 34 that are disposed through the base plate 42. A demolding template 31 is fixedly installed on the top of the vertical rods 34. Multiple sets of compression springs 33 are disposed between the bottom of the demolding template 31 and the top of the base plate 42. The compression springs 33 are sleeved on the outside of the vertical rods 34. A groove 32 adapted to the punch 23 is provided on the demolding template 31.

[0040] As the punch 23 moves downward, it passes through the groove 32 first. As the punch 23 continues to descend, the mounting plate 22 abuts against the ejector plate 31, thereby driving the ejector plate 31 to move downward and the vertical rod 34 to move downward. At the same time, the compression spring 33 is compressed until the bottom of the ejector plate 31 contacts the battery casing, so as to drive the battery casing to move into the mold cavity 43 for stamping.

[0041] After stamping is completed, the punch 23 is reset. At this time, the battery casing may stick to the punch 23 due to deformation and extrusion. When the ejector plate 31 is fully reset, the battery casing on the punch 23 abuts against the bottom of the ejector plate 31 to restrict it. As the punch 23 gradually rises until it is flush with the bottom of the groove 32, the battery casing on the punch 23 is completely separated from the punch 23 under the restriction of the ejector plate 31.

[0042] Meanwhile, a pusher assembly 5 is provided on the demolding assembly 3, which is used to push the demolded battery casing out of the mold.

[0043] like Figures 2-4 As shown, the pushing assembly 5 includes a connecting plate 51 fixedly installed at the bottom of the demolding template 31, and a cylinder 52 fixedly installed at the bottom of the connecting plate 51. A push plate 53 is fixedly installed at the output end of the cylinder 52. The push plate 53 is located on one side of the groove 32. Two sets of slide rails 54 are fixedly installed at the bottom of the demolding template 31, and the push plate 53 is slidably mounted on the slide rails 54. Under the drive of the cylinder 52, the push plate 53 extends and retracts on the slide rails 54. When the push plate 53 extends, it can push out the demolded battery casing.

[0044] Meanwhile, a cavity 56 adapted to each component in the pusher assembly 5 is provided on one side of the base plate 42 so that when the upper mold assembly 2 drives the demolding plate 31 to close with the lower mold assembly 4, the pusher assembly 5 is simultaneously driven to close and is provided with a accommodating space.

[0045] Continue to refer to Figure 1 A ramp 55 is provided on the other side of the base plate 42 so that the battery casing pushed out by the push plate 53 can slide out of the base plate 42 via the ramp 55 and be collected.

[0046] In summary, during the stamping of the battery casing, the battery casing is placed on the lower die assembly 4. Then, the lifting equipment on the stamping production line drives the upper die assembly 2 to move to the lower die assembly 4 to perform the stamping operation on the battery casing. During the movement of the upper die assembly 2, it first comes into contact with the demolding assembly 3 and moves downwards simultaneously. At this time, the compression spring 33 is compressed. After the mold is closed, the upper die assembly 2 resets. At this time, the battery casing deformed due to extrusion may stick to the upper die assembly 2. At the same time, the demolding assembly 3 resets simultaneously under the action of the compression spring 33. After the demolding assembly 3 resets, the upper die assembly 2 drives the battery casing to contact the punch assembly 23. As the upper die assembly 2 continues to rise and the demolding assembly 3 restricts it, the battery casing is separated from the upper die assembly 2. At this time, the pusher assembly 5 is activated, pushing the separated battery casing out of the bottom plate 42 until it is located on the ramp 55 and slides out of the lower die assembly 4 through the ramp 55.

[0047] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A mold for a battery casing, characterized in that: include: Base (1); The lower mold assembly (4) is disposed on the base (1) and has a base plate (42) suitable for supporting the battery casing; Upper mold assembly (2), which is disposed above the lower mold assembly (4); A demolding assembly (3), which is disposed on the lower mold assembly (4), includes: At least two sets of vertical rods (34) are provided, the vertical rods (34) passing through the base plate (42); A stripping template (31) is installed on the top of the vertical rod (34), and a groove (32) is provided on the stripping template (31); At least two sets of compression springs (33) are provided between the bottom of the demolding template (31) and the top of the base plate (42), and the compression springs (33) are sleeved on the outside of the vertical rod (34).

2. The mold for a battery casing according to claim 1, characterized in that: The lower mold assembly (4) includes a base plate (42) mounted on the base (1), a mold cavity (43) is provided on the base plate (42), a push rod is provided through the inside of the mold cavity (43), and a disc (44) is installed on the top of the push rod.

3. The mold for a battery casing according to claim 2, characterized in that: A cavity (56) is provided on one side of the base plate (42), and a ramp (55) is provided on the other side of the base plate (42).

4. A mold for a battery casing according to claim 2, characterized in that: A reset spring is provided between the bottom of the disc (44) and the bottom wall of the mold cavity (43), and the reset spring is sleeved on the outside of the push rod.

5. A mold for a battery casing according to claim 1, characterized in that: The upper mold assembly (2) includes a base plate (21) disposed above the lower mold assembly (4). Two sets of guide posts (24) are installed on the base plate (21). Two sets of guide sleeves (41) are installed on the base (1). The guide sleeves (41) have slots. An mounting plate (22) is installed at the bottom of the base plate (21). A punch (23) is installed at the bottom of the mounting plate (22).

6. A mold for a battery casing according to claim 1, characterized in that: The demolding assembly (3) is provided with a pusher assembly (5), which includes a connecting plate (51) installed at the bottom of the demolding template (31). A cylinder (52) is installed at the bottom of the connecting plate (51), and a pusher plate (53) is installed at the output end of the cylinder (52). The pusher plate (53) is located on one side of the groove (32). Two sets of slide rails (54) are installed at the bottom of the demolding template (31), and the pusher plate (53) is slidably disposed on the slide rails (54).

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