Battery shell stamping device

Abstract

The utility model relates to the technical field of stamping dies, in particular to a battery shell stamping device which comprises a base and a frame body arranged on the base, a lower die is arranged on the base, an upper die capable of ascending and descending and matched with the lower die is arranged on the frame body, and the lower die comprises a lower die base and a die core arranged on the lower die base. A female die cavity is formed in the die core, a mounting cavity is formed in the lower die base, and a jacking assembly used for jacking out a battery shell formed in the female die cavity is arranged in the mounting cavity. The jacking assembly comprises opposite jacking rods with the upper ends capable of stretching into the female die cavity, and further comprises a driving assembly arranged in the mounting cavity, and the driving assembly is used for driving the jacking rods to ascend and descend synchronously. By means of the structure, the driving assembly can synchronously drive the two ejector rods to synchronously ascend and descend, then the battery shell clamped in the female die cavity can be stably ejected out, demolding of the battery shell in the female die cavity is facilitated, and the stamping device is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, in particular to a battery shell stamping device. Background Art

[0002] Generally, batteries are protected by battery cases. After the battery cases are produced, the battery cases are loaded with battery cells, and finally capped and packaged to protect the batteries. At present, most battery cases are made by stamping dies. After the existing stamping dies are stamped, the battery cases will be stuck in the forming cavity of the stamping dies, which makes it inconvenient to demould the battery cases.

[0003] For example, the patent number CN220444844U discloses a shell stamping die for lithium battery production. Although the disclosed stamping die is provided with a threaded rod and a limit plate, when replacing the die, the threaded rod is rotated upward to pull out the stabilizing plate, and then the limit plate is slid out of the sliding frame, and then the die is slid out. However, in actual use, the stamped battery shell is easily stuck in the molding cavity of the die, which makes it inconvenient to demold the battery shell, so it needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide a battery housing punching device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A battery shell stamping device includes a base and a frame arranged on the base, a lower mold is arranged on the base, an upper mold which can be raised and lowered and matched with the lower mold is arranged on the frame, the lower mold includes a lower mold base and a mold core arranged on the lower mold base, a concave mold cavity is arranged on the mold core, a mounting cavity is arranged in the lower mold base, a lifting assembly for ejecting the battery shell formed in the concave mold cavity is arranged in the mounting cavity; the lifting assembly includes opposite ejector rods whose upper ends can extend into the concave mold cavity, and the lifting assembly also includes a driving assembly arranged in the mounting cavity, and the driving assembly is used to drive the ejector rods to rise and fall synchronously.

[0007] Preferably, a connecting plate is provided between the lower ends of the push rods, an abutting plate is provided on the lower side of the connecting plate, and a first spring for driving the connecting plate to move downward is sleeved on the push rods;

[0008] The driving assembly includes a driving block slidably arranged on the bottom wall of the installation cavity. The driving block is provided with a groove for the abutment plate to extend into. The side wall of the groove is provided with a guide slope. The sliding of the driving block is used to drive the abutment plate to slide out of the groove along the guide slope to realize the lifting of the push rod.

[0009] Preferably, guide rods are relatively arranged on both sides of the driving block along the moving direction of the driving block in the installation cavity, guide blocks are arranged on the opposite sides of the driving block, the guide rods penetrate the corresponding guide blocks, a second spring for pushing the driving block to move to realize the abutment plate sliding into the groove is sleeved on the guide rods, and a pushing member extending through the lower mold base is provided at one end of the driving block.

[0010] Preferably, a slot for inserting the lower end of the abutment plate is provided on the upper side surface of the driving block and at the highest point of the guide slope, a matching cavity connected to the slot is provided inside the driving block and located below the slot, a lift block that can be raised and lowered is provided in the matching cavity, a lifting block that can be extended into the slot and used to push out the abutment plate is provided on the lifting block, and a driving member that extends into the matching cavity and is used to drive the lifting block to rise and fall is provided on the pushing member.

[0011] Preferably, the pushing member includes a pushing column, the driving member includes a driving rod arranged at one end of the pushing column, the other end of the driving rod extends into the matching cavity, the driving rod is rotatably installed at one end of the driving block through a bearing seat, and the other end of the driving rod is provided with a protrusion for lifting the lifting block.

[0012] Preferably, a concave groove is provided on the bottom wall of the concave mold cavity corresponding to the ejector rod, and a push block connected to the upper end of the corresponding ejector rod is provided in the concave groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model, through the arrangement of the ejector rod and the driving assembly, enables the driving assembly to synchronously drive the two ejector rods to rise and fall synchronously, thereby enabling the battery housing stuck in the die cavity to be smoothly ejected, thereby facilitating the demoulding of the battery housing in the die cavity and facilitating the use of the stamping device.

[0015] 2. The utility model can realize that the battery housing in the concave mold cavity can be lifted by the push rod by pressing the push column to move the driving block into the installation cavity, which is convenient for demoulding the battery housing. At the same time, pressing the push column can make the abutment plate snap into the slot, so that the push rod can keep the battery housing lifted, which is convenient for the operator to take out the battery housing. After the battery housing is demoulded, the push column can be rotated to drive the protrusion to lift the lifting block, so that the abutment plate is separated from the slot, and the driving block is reset under the second spring, so that the lifting assembly can be used again. Through the above structure, the operation and use of the lifting assembly is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a battery casing punching device in the utility model.

[0017] Figure 2 It is a cross-sectional schematic diagram between the base and the lower mold in the utility model.

[0018] Figure 3 This is a vertical sectional view between the base and the lower mold in the present utility model.

[0019] Figure 4 This is an exploded structural view of the driving member installed on the driving block in the present utility model.

[0020] The meanings of the reference numerals in the figure are as follows:

[0021] 100, base; 101, column; 110, frame; 111, cylinder; 120, upper mold; 121, upper mold base; 130, lower mold;

[0022] 210, mold core; 211, female mold cavity; 220, lower mold base; 221, installation cavity; 222, guide rod; 223, second spring; 230, ejector rod; 231, connecting plate; 232, abutting plate; 240, first spring; 250, driving block; 251, groove; 252, guiding inclined surface; 260, pushing column; 270, driving rod; 271, convex block;

[0023] 311, recessed groove; 321, pushing block;

[0024] 411, guiding block; 412, clamping groove; 413, fitting cavity; 420, lifting block; 421, top block; 430, bearing seat; 440, blocking plate. Specific embodiments

[0025] To further understand the content of the present utility model, the present utility model will be described in detail with reference to the accompanying drawings and embodiments. It should be understood that the embodiments are only for explaining the present utility model and not for limiting it.

[0026] The following is further described in detail with reference to the attached Figures 1-4 This embodiment is further described in detail.

[0027] Combined with Figures 1-2 As shown, a battery case stamping device in this embodiment includes a base 100 and a frame 110 provided on the base 100. A lower mold 130 is provided on the base 100, and an upper mold 120 that can be lifted and lowered and cooperates with the lower mold 130 is provided on the frame 110. The lower mold 130 includes a lower mold base 220 and a mold core 210 provided on the lower mold base 220. A female mold cavity 211 is provided on the mold core 210. An installation cavity 221 is provided in the lower mold base 220, and a jacking assembly for jacking out the battery case formed in the female mold cavity 211 is provided in the installation cavity 221. The jacking assembly includes ejector rods 230 that are opposite and whose upper ends can extend into the female mold cavity 211. The jacking assembly further includes a driving assembly provided in the installation cavity 221, and the driving assembly is used to drive the ejector rods 230 to lift and lower synchronously.

[0028] In this embodiment, the upper die 120 includes an upper die base 121 and a punch 122 disposed on the lower side surface of the upper die base 121 and capable of extending into the female die cavity 211. Thus, a sheet to be stamped (such as an aluminum sheet) is placed on the die core 210, and when the upper die 120 descends, it can drive the punch 122 to extend into the female die cavity 211, and the sheet can be stamped into a battery case.

[0029] In this embodiment, a cylinder 111 for driving the upper die 120 to lift is disposed above the frame body 110. During actual use, the output shaft of the cylinder 111 is fixedly connected to the upper die base 121. Thus, the lifting of the upper die 120 is preferably realized. Among them, in order to make the lifting of the upper die 120 more stable, a column 101 penetrating the upper die base 121 is provided between the frame body 110 and the base 100. Thus, the lifting of the upper die 120 is more stable.

[0030] Among them, through the setting of the jacking assembly, it can jack out the battery case formed in the female die cavity 211, avoiding the battery case being stuck in the female die cavity 211, which makes its demolding inconvenient.

[0031] Among them, through the setting of the ejector rod 230 and the driving assembly, two ejector rods 230 are oppositely arranged, so that it can evenly jack up the battery case in the female die cavity 211. Among them, the driving assembly can drive the opposite ejector rods 230 to lift synchronously, so that the lifting of the ejector rods 230 is more synchronous and stable, and the demolding effect of the battery case is better.

[0032] Combined Figure 2 and Figure 3 As shown, in this embodiment, a connecting plate 231 is provided between the lower ends of the ejector rods 230, a contact plate 232 is provided on the lower side surface of the connecting plate 231, and a first spring 240 for driving the connecting plate 231 to move downward is sleeved on the ejector rod 230.

[0033] The driving assembly includes a driving block 250 slidably disposed on the bottom wall of the installation cavity 221. A groove 251 for the contact plate 232 to extend into is provided on the driving block 250, and a guiding inclined surface 252 is provided on the side wall of the groove 251. The driving block 250 slides to drive the contact plate 232 to slide out of the groove 251 along the guiding inclined surface 252 to realize the jacking of the ejector rod 230.

[0034] In actual use of this embodiment, a recessed groove 311 is provided on the bottom wall of the female die cavity 211 corresponding to the ejector rod 230. A push block 321 is arranged in the recessed groove 311. The push block 321 is fixedly connected to the upper end of the corresponding ejector rod 230 by screws. Thus, the push block 321 can be used to increase the contact area between the ejector rod 230 and the battery case, so that the ejector rod 230 can lift the battery case more stably. At the same time, by connecting the lower end of the ejector rod 230 through the connecting plate 231 and cooperating with the push block 321 being stuck in the recessed groove 311, the ejector rod 230 and the first spring 240 can be stably lifted and installed in the installation cavity 221;

[0035] Among them, through the settings of the driving block 250, the groove 251, the guiding inclined surface 252 and the abutting plate 232, when the driving block 250 moves in the installation cavity 221 and the abutting plate 232 slides into the groove 251 along the guiding inclined surface 252, at this time, the first spring 240 drives the ejector rod 230 to move downward, driving the push block 321 to be stuck in the corresponding recessed groove 311. At this time, it is convenient for the upper die 120 to move downward to the lower die 130 for stamping operation; when the driving block 250 moves in the installation cavity 221, the guiding inclined surface 252 squeezes the abutting plate 232 to realize that the abutting plate 232 slides out of the groove 251 along the guiding inclined surface 252, and then drives the ejector rod 230 to move upward, realizing the lifting of the battery case in the female die cavity 211, so as to facilitate its demoulding.

[0036] In this embodiment, guide rods 222 are relatively arranged on both sides of the driving block 250 along the moving direction of the driving block 250 in the installation cavity 221. Guide blocks 411 are arranged on the opposite side surfaces of the driving block 250. The guide rods 222 penetrate through the corresponding guide blocks 411. A second spring 223 for pushing the driving block 250 to move to realize the abutting plate 232 sliding into the groove 251 is sleeved on the guide rods 222. A pushing member that penetrates through the lower die base 220 and extends out is arranged at one end of the driving block 250.

[0037] In this embodiment, through the arrangement that the guide rods 222 penetrate through the corresponding guide blocks 411, the driving block 250 is restricted, so that it can only move smoothly along the guide rods 222 in the installation cavity 221;

[0038] Among them, through the setting of the second spring 223, during actual use, the second spring 223 always pushes the driving block 250 to move, driving the pushing member to extend out of the lower die base 220. At the same time, the abutting plate 232 can extend into the bottom of the groove 251, keeping the ejector rod 230 driving the pushing block 321 to snap into the corresponding recessed groove 311, so that the stamping device can perform stamping operations. At this time, by pressing the extended pushing member, the driving block 250 can be moved along the guiding rod 222 into the installation cavity 221, and then the abutting plate 232 can slide out of the groove 251 along the guiding inclined surface 252, realizing the synchronous lifting of the battery housing in the female die cavity 211 by the two ejector rods 230. Thus, the operation of demolding the battery housing by the lifting assembly is simple and convenient.

[0039] Combined with Figure 4 As shown, in this embodiment, a card slot 412 for the lower end of the abutting plate 232 to snap into is provided at the highest point of the guiding inclined surface 252 on the upper side of the driving block 250. A matching cavity 413 communicating with the card slot 412 is provided below the card slot 412 in the driving block 250. A lift block 420 that can be lifted and lowered is provided in the matching cavity 413. A top block 421 that can extend into the card slot 412 and is used to eject the abutting plate 232 is provided on the lift block 420. A driving member for driving the lift block 420 to lift and lower is provided on the pushing member and extends into the matching cavity 413.

[0040] During actual use of this embodiment, the side wall of the lift block 420 is slidably attached to the side wall of the matching cavity 413. Thus, the lift block 420 can be smoothly lifted and lowered in the matching cavity 413. Among them, the top block 421 is adapted to the card slot 412, that is, when the lift block 420 rises in the matching cavity 413, the top block 421 can extend into the card slot 412.

[0041] In this embodiment, in the initial state, the lift block 420 and the top block 421 move downward in the matching cavity 413 due to their own weights, that is, the top block 421 disengages from the card slot 412. Thus, during the process that the operator presses the pushing member to drive the driving block 250 to move into the installation cavity 221, the abutting plate 232 slides out of the groove 251 along the guiding inclined surface 252 and the lower end of the abutting plate 232 can be snapped into the card slot 412. At this time, the ejector rod 230 can be kept driving the pushing block 321 in the lifting state, and then it is convenient to demold the battery housing in the female die cavity 211.

[0042] Among them, through the setting of the driving member, it can drive the lifting block 420 to rise, drive the top block 421 to extend into the card slot 412, and eject the abutting plate 232 stuck in the card slot 412. At this time, the driving block 250 is reset under the action of the second spring 223, so that the abutting plate 232 slides into the groove 251 along the guiding inclined surface 252, causing the ejector rod 230 to move downward and drive the pushing block 321 to be stuck into the corresponding recessed groove 311. At the same time, the pushing member can be extended, thus facilitating the reuse of the jacking assembly.

[0043] In this embodiment, the pushing member includes a pushing column 260, and the driving member includes a driving rod 270 provided at one end of the pushing column 260. The other end of the driving rod 270 extends into the fitting cavity 413. The driving rod 270 is rotatably installed at one end of the driving block 250 through a bearing seat 430. A convex block 271 for jacking up the lifting block 420 is provided at the other end of the driving rod 270.

[0044] In this embodiment, through the setting of the bearing seat 430, the rotational installation of the driving rod 270 in the fitting cavity 413 is preferably realized. Among them, the end of the driving rod 270 extending out of the fitting cavity 413 is fixedly connected to one end of the pushing column 260. Thus, when the pushing column 260 rotates, it can drive the driving rod 270 to rotate. Among them, by using the setting of the convex block 271, in actual use, when the pushing column 260 rotates, it can drive the driving rod 270 to rotate, and then drive the convex block 271 to rotate, so that it can push the lifting block 420 to move upward, realizing that the top block 421 ejects the abutting plate 232 stuck in the card slot 412. When the pushing column 260 is pressed, it can push the driving block 250 to move into the installation cavity 221, driving the ejector rod 230 to move upward for the demolding operation of the battery case.

[0045] Among them, in order to facilitate the installation of the driving member in the fitting cavity 413, one end of the fitting cavity 413 facing the driving block 250 is provided with an opening, and a plug plate 440 is provided at the opening. The driving rod 270 passes through the plug plate 440 and extends into the fitting cavity 413. The bearing seat 430 is fixedly installed on the plug plate 440. Thus, the installation of the pushing member and the driving member on the driving block 250 is preferably realized.

[0046] Working principle: Place the sheet to be stamped on the die core 210, and use the air cylinder 111 to drive the upper die 120 to move downward to the lower die 130 for stamping the battery case. After the stamping is completed, press the push column 260 to make the driving block 250 move into the installation cavity 221, so that the abutting plate 232 slides out of the groove 251 along the guiding inclined surface 252, and the lower end of the abutting plate 232 is clamped into the clamping groove 412. Furthermore, the ejector rod 230 drives the push block 321 to move upward to eject the battery case in the female die cavity 211. After the demolding of the battery case is completed, rotate the push column 260 to drive the driving rod 270 to rotate, so that the convex block 271 squeezes the lifting block 420 to move upward to drive the top block 421 to extend into the clamping groove 412 to eject the abutting plate 232. At this time, under the action of the second spring 223, the driving block 250 resets, so that the ejector rod 230 moves downward to drive the push block 321 to move into the recessed groove 311, thus facilitating the stamping device to perform the stamping operation of the battery case again.

[0047] In conclusion, the above are only the preferred embodiments of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the patent of the present invention.

Claims

1. A battery housing stamping device, characterized in that: The invention comprises a base (100) and a frame (110) arranged on the base (100); a lower mold (130) is arranged on the base (100); an upper mold (120) which can be raised and lowered and matched with the lower mold (130) is arranged on the frame (110); the lower mold (130) comprises a lower mold base (220) and a mold core (210) arranged on the lower mold base (220); a concave mold cavity (211) is arranged on the mold core (210); a mounting cavity (221) is arranged in the lower mold base (220); a lifting assembly for ejecting a battery shell formed in the concave mold cavity (211) is arranged in the mounting cavity (221); the lifting assembly comprises a push rod (230) which is opposite to the push rod and the upper end of which can extend into the concave mold cavity (211); the lifting assembly also comprises a driving assembly arranged in the mounting cavity (221); the driving assembly is used to drive the push rod (230) to rise and fall synchronously.

2. A battery casing punching device according to claim 1, characterized in that: A connecting plate (231) is provided between the lower ends of the push rod (230), an abutting plate (232) is provided on the lower side of the connecting plate (231), and a first spring (240) for driving the connecting plate (231) to move downward is sleeved on the push rod (230); The driving assembly comprises a driving block (250) slidably arranged on the bottom wall of the installation cavity (221); the driving block (250) is provided with a groove (251) for the abutment plate (232) to extend into; a guide inclined surface (252) is provided on the side wall of the groove (251); the driving block (250) slides to drive the abutment plate (232) to slide out of the groove (251) along the guide inclined surface (252) to realize the lifting of the ejector rod (230).

3. A battery casing punching device according to claim 2, characterized in that: Guide rods (222) are arranged on both sides of the driving block (250) along the moving direction of the driving block (250) in the installation cavity (221); guide blocks (411) are arranged on the opposite sides of the driving block (250); the guide rods (222) penetrate the corresponding guide blocks (411); a second spring (223) is sleeved on the guide rods (222) for pushing the driving block (250) to move so that the abutting plate (232) slides into the groove (251); and a pushing member is arranged at one end of the driving block (250) and extends through the lower die seat (220).

4. A battery casing punching device according to claim 3, characterized in that: A slot (412) for the lower end of the abutting plate (232) to be inserted is provided on the upper side surface of the driving block (250) and at the highest point of the guiding inclined surface (252); a matching cavity (413) communicating with the slot (412) is provided in the driving block (250) and at the lower part of the slot (412); a lifting block (420) capable of lifting and lowering is provided in the matching cavity (413); a lifting block (421) capable of extending into the slot (412) and used for pushing out the abutting plate (232) is provided on the lifting block (420); and a driving member extending into the matching cavity (413) and used for driving the lifting block (420) to lift and lower is provided on the pushing member.

5. A battery casing punching device according to claim 4, characterized in that: The pushing member includes a pushing column (260), and the driving member includes a driving rod (270) arranged at one end of the pushing column (260). The other end of the driving rod (270) extends into the matching cavity (413). The driving rod (270) is rotatably installed at one end of the driving block (250) through a bearing seat (430). A protrusion (271) for lifting the lifting block (420) is provided at the other end of the driving rod (270).

6. A battery casing punching device according to claim 2, characterized in that: A concave groove (311) is provided on the bottom wall of the female mold cavity (211) corresponding to the ejector rod (230), and a push block (321) connected to the upper end of the corresponding ejector rod (230) is provided in the concave groove (311).

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