A battery case press forming device

Abstract

This application relates to the technical field of battery casing stamping equipment, and discloses a battery casing stamping forming device, including a base box, a support frame fixedly installed on the rear side of the base box, a stamping mechanism provided on the support frame, a lower die base fixedly installed on the top of the base box, two through holes opened on the top of the base box, the lower die base located between the two through holes, limit plates fixedly installed on the front and rear sides of the top of the lower die base, and an ejection mechanism provided inside the lower die base; a piston cylinder fixedly installed on the inner wall of the bottom of the base box, a piston mechanism provided inside the piston cylinder, and a hollow seat fixedly installed on the inner wall of the top of the base box. This application has the following advantages and effects: by setting up a pneumatic mechanism and an ejection mechanism, the formed battery casing can be ejected from the lower die base, thereby achieving automatic demolding, facilitating rapid material handling, effectively improving the stamping efficiency and forming quality of the battery casing, and reducing manual intervention costs.

Description

Technical Field

[0001] This application relates to the field of battery casing stamping equipment technology, and in particular to a battery casing stamping forming apparatus. Background Technology

[0002] The production and preparation of batteries requires comprehensive processing of various finished raw materials, and the internal components need to be installed through the casing. The processing of the battery casing is accomplished by a stamping device.

[0003] A search revealed that patent document CN222519664U discloses a stamping forming device for battery casing processing, specifically relating to the field of battery casing production technology. The device includes a base with a feeding assembly mounted on top. The feeding assembly comprises a first cylinder with a push plate mounted at its output end. A first motor is installed inside the base, and a first lead screw is mounted at its output end. A threaded block is mounted on the outside of the lead screw, and a support frame is fixedly connected to the top of the threaded block. Compared to existing technologies, by using the feeding assembly, the upward movement of the push plate quickly pushes the battery casing upwards, and the two clamping plates clamp the casing and move it to one side. This avoids the tediousness and time waste of manual operation, while also reducing the likelihood of the battery casing getting stuck in the lower mold, reducing production defects and scrap rates, thereby significantly improving production efficiency.

[0004] In practical use, it has been found that existing devices require manual adjustment when positioning raw material sheets, and the offset error in the front-back and left-right directions is difficult to control. This can easily lead to poor dimensional consistency of the stamped shell, and even defects such as side wrinkles and incomplete forming. Therefore, we propose a battery shell stamping forming device to solve the above problems. Utility Model Content

[0005] The purpose of this application is to address the shortcomings of existing technologies, such as the need for manual adjustment when positioning raw material sheets, the difficulty in controlling offset errors in the front-back and left-right directions, which easily leads to poor dimensional consistency of the stamped shell and even defects such as side wrinkles and incomplete forming. Therefore, this application proposes a battery shell stamping forming device.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution: a battery casing stamping forming device, including a base box, a support frame fixedly installed on the rear side of the base box, a stamping mechanism provided on the support frame, a lower die base fixedly installed on the top of the base box, two through holes opened on the top of the base box, the lower die base located between the two through holes, limit plates fixedly installed on the front and rear sides of the top of the lower die base, and an ejection mechanism provided inside the lower die base; a piston cylinder fixedly installed on the inner wall of the bottom of the base box, a piston mechanism provided inside the piston cylinder, a hollow seat fixedly installed on the inner wall of the top of the base box, a pneumatic mechanism provided between the hollow seat and the lower die base, a straightening mechanism provided on the top of the base box, and a controller provided on the front side of the base box.

[0007] A further configuration of this application is as follows: the stamping mechanism includes a hydraulic cylinder, a lifting plate and an upper die base. A hydraulic cylinder is fixedly installed on the top of the support frame, and a lifting plate is fixedly installed at the bottom of the output shaft of the hydraulic cylinder. The lifting plate is located inside the support frame, and an upper die base is fixedly installed at the bottom of the lifting plate. The upper die base and the lower die base are adapted to each other.

[0008] By adopting the above technical solution and by setting up a stamping mechanism, the hydraulic cylinder can drive the lifting plate and the upper mold base to move downward, so as to realize the closing of the upper mold base and the lower mold base and complete the stamping and forming of the battery shell.

[0009] A further feature of this application is that the straightening mechanism includes two trapezoidal seats and two straightening plates. Two trapezoidal seats are slidably installed on the top of the bottom box. The trapezoidal seats are located outside the lower mold seat, and the through hole is located below the trapezoidal seats. A straightening plate is fixedly installed on the top of the trapezoidal seats.

[0010] By adopting the above technical solution and by setting up a straightening mechanism, the trapezoidal seat can drive the top straightening plate to move closer to the raw material sheet in sync, thereby achieving the purpose of clamping and straightening the raw material sheet from the left and right directions and ensuring that the center of the raw material sheet is precisely aligned with the center of the lower mold base.

[0011] A further feature of this application is that a trapezoidal push block is fixedly installed at the bottom of the lifting plate, the trapezoidal push block is located outside the upper mold base, and the trapezoidal push block is adapted to the trapezoidal base and the through hole.

[0012] By adopting the above technical solution, and by setting a trapezoidal pusher, when the lifting plate moves down, it can contact the inclined surface of the trapezoidal seat through the trapezoidal pusher and generate a lateral thrust, which can push the two trapezoidal seats to slide inward along the top of the bottom box.

[0013] A further configuration of this application is as follows: the piston mechanism includes a piston plate and a piston rod, the piston plate is slidably installed inside the piston cylinder, the piston rod is fixedly installed on the top of the piston plate, the top of the piston rod is fixedly connected to the bottom of the lifting plate, the piston rod is located outside the trapezoidal push block, a pressure relief pipe is fixedly installed on the outside of the piston cylinder, the pressure relief pipe extends to the outside of the bottom box, and the piston plate is located above the pressure relief pipe.

[0014] By adopting the above technical solution and by setting up a piston mechanism, the air pressure above the piston plate in the piston cylinder can be changed by the piston plate when the lifting plate is raised and lowered.

[0015] A further feature of this application is that the pneumatic mechanism includes a connecting pipe and a vent pipe. Connecting pipes are fixedly installed on both sides of the hollow seat. The other end of the connecting pipe is fixedly connected to the corresponding piston cylinder. The other end of the connecting pipe is located above the piston plate. A common vent pipe is provided between the hollow seat and the lower mold base.

[0016] By adopting the above technical solution and by setting up a pneumatic mechanism, the piston cylinder can change the air pressure inside the hollow seat through the connecting pipe, thereby achieving the purpose of changing the air pressure inside the lower mold base.

[0017] A further feature of this application is that the ejection mechanism includes a top plate and a slider, the top plate is slidably installed in the lower mold base, sliders are provided on both sides of the top plate, and grooves are provided on both sides of the inner wall of the lower mold base, with the sliders slidably connected to the grooves.

[0018] By adopting the above technical solution and by setting an ejection mechanism, when the lifting plate moves up, the air pressure in the lower mold base increases, which can drive the top plate to move upward, thereby achieving the purpose of ejecting the stamped battery casing.

[0019] A further feature of this application is that a spring is fixedly installed on the inner side of the trapezoidal seat, and the other end of the spring is fixedly connected to the outer side of the lower mold seat.

[0020] By adopting the above technical solution and incorporating a spring, the spring's rebound force can drive the trapezoidal seat to move outward, thereby achieving the purpose of resetting the centering plate.

[0021] The beneficial effects of this application are: 1. Through the cooperation of hydraulic cylinder, lifting plate, trapezoidal push block, trapezoidal seat and straightening plate, the hydraulic cylinder can drive the trapezoidal push block to move downward, and the straightening plate can move closer to the raw material sheet at the same time, so as to clamp and straighten the raw material sheet from the left and right directions, and ensure that the center of the raw material sheet is precisely aligned with the center of the lower mold base. 2. Through the cooperation of the lifting plate, piston rod, piston plate, connecting pipe, hollow seat, vent pipe and top plate, when the lifting plate moves up, the gas in the piston cylinder is compressed and forced into the hollow seat through the connecting pipe, which can increase the air pressure in the lower mold base, push the top plate to move upward along the slide, and realize the ejection of the formed battery shell from the lower mold base, thereby realizing automatic demolding, facilitating quick material removal, effectively improving the stamping efficiency and forming quality of the battery shell, and reducing the cost of manual intervention. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional structural schematic diagram of a battery casing stamping and forming apparatus according to this application; Figure 2 This is a schematic diagram of the internal structure of the support frame and lower die base of a battery casing stamping forming device according to this application; Figure 3 This is a schematic diagram of the internal structure of the bottom box of a battery casing stamping and forming device according to this application; Figure 4 This is a schematic diagram of the piston mechanism of a battery casing stamping and forming device according to this application.

[0024] In the diagram: 1. Base box; 2. Support frame; 201. Hydraulic cylinder; 202. Lifting plate; 203. Upper mold base; 3. Lower mold base; 301. Top plate; 302. Limiting plate; 4. Piston cylinder; 401. Piston plate; 402. Piston rod; 5. Hollow seat; 501. Connecting pipe; 502. Vent pipe; 6. Trapezoidal push block; 7. Trapezoidal seat; 701. Straightening plate; 702. Spring; 8. Pressure relief pipe; 9. Through hole. Detailed Implementation

[0025] The technical solution of this application will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0026] See Figures 1-4 This application provides a battery casing stamping forming apparatus, including a base box 1, a support frame 2 fixedly installed on the rear side of the base box 1, a stamping mechanism provided on the support frame 2, a lower die base 3 fixedly installed on the top of the base box 1, two through holes 9 opened on the top of the base box 1, the lower die base 3 located between the two through holes 9, limit plates 302 fixedly installed on the front and rear sides of the top of the lower die base 3, and an ejection mechanism provided inside the lower die base 3; a piston cylinder 4 fixedly installed on the bottom inner wall of the base box 1, a piston mechanism provided inside the piston cylinder 4, a hollow seat 5 fixedly installed on the top inner wall of the base box 1, a pneumatic mechanism provided between the hollow seat 5 and the lower die base 3, a straightening mechanism provided on the top of the base box 1, and a controller provided on the front side of the base box 1.

[0027] Specifically, the stamping mechanism includes a hydraulic cylinder 201, a lifting plate 202, and an upper die holder 203. The hydraulic cylinder 201 is fixedly installed on the top of the support frame 2, and the lifting plate 202 is fixedly installed at the bottom of the output shaft of the hydraulic cylinder 201. The lifting plate 202 is located inside the support frame 2, and the upper die holder 203 is fixedly installed at the bottom of the lifting plate 202. The upper die holder 203 is adapted to the lower die holder 3.

[0028] Specifically, the straightening mechanism includes two trapezoidal seats 7 and two straightening plates 701. Two trapezoidal seats 7 are slidably installed on the top of the bottom box 1. The trapezoidal seats 7 are located outside the lower mold base 3. The through hole 9 is located below the trapezoidal seats 7. The straightening plate 701 is fixedly installed on the top of the trapezoidal seats 7.

[0029] Specifically, a trapezoidal push block 6 is fixedly installed at the bottom of the lifting plate 202. The trapezoidal push block 6 is located outside the upper mold base 203 and is compatible with the trapezoidal base 7 and the through hole 9.

[0030] Specifically, the piston mechanism includes a piston plate 401 and a piston rod 402. The piston plate 401 is slidably installed inside the piston cylinder 4. The piston rod 402 is fixedly installed on the top of the piston plate 401. The top of the piston rod 402 is fixedly connected to the bottom of the lifting plate 202. The piston rod 402 is located outside the trapezoidal push block 6. A pressure relief pipe 8 is fixedly installed on the outside of the piston cylinder 4. The pressure relief pipe 8 extends to the outside of the bottom box 1. The piston plate 401 is located above the pressure relief pipe 8.

[0031] Specifically, the pneumatic mechanism includes a connecting pipe 501 and a vent pipe 502. The connecting pipe 501 is fixedly installed on both sides of the hollow seat 5. The other end of the connecting pipe 501 is fixedly connected to the corresponding piston cylinder 4. The other end of the connecting pipe 501 is located above the piston plate 401. The same vent pipe 502 is provided between the hollow seat 5 and the lower mold base 3.

[0032] Specifically, the ejection mechanism includes a top plate 301 and a slider. The top plate 301 is slidably installed inside the lower mold base 3. Sliders are provided on both sides of the top plate 301. Sliding grooves are provided on both sides of the inner wall of the lower mold base 3. The sliders are slidably connected to the sliding grooves.

[0033] Specifically, a spring 702 is fixedly installed on the inner side of the trapezoidal base 7, and the other end of the spring 702 is fixedly connected to the outer side of the lower mold base 3.

[0034] In this application, during operation, the battery casing material sheet to be stamped is first placed on the lower die base 3. The limiting plate 302 at the top of the lower die base 3 initially positions the material sheet from the front and back, which can prevent the material sheet from shifting back and forth during placement, laying the foundation for subsequent precise stamping. The controller is activated to control the hydraulic cylinder 201 to work. The hydraulic cylinder 201 extends axially downward, which can drive the lifting plate 202 to move steadily downward along the support frame 2. The lifting plate 202 can simultaneously drive the upper die base 203 and the trapezoidal push block 6 at the bottom to move downward, and the trapezoidal push block 6 moves downward accordingly. And through the through hole 9, its inclined surface can contact the inclined surface of the trapezoidal seat 7 and generate a lateral thrust, which can push the two trapezoidal seats 7 to slide inward along the top of the bottom box 1. The trapezoidal seat 7 can drive the top straightening plate 701 to move closer to the raw material sheet at the same time, which can achieve the purpose of clamping and straightening the raw material sheet from the left and right directions, ensuring that the center of the raw material sheet is precisely aligned with the center of the lower die seat 3. At this time, the spring 702 inside the trapezoidal seat 7 is compressed, storing elastic potential energy for subsequent reset, thereby achieving automatic positioning of the raw material sheet, avoiding errors from manual adjustment, and improving stamping accuracy. As the lifting plate 202 moves downward, it can simultaneously drive the piston rod 402 and piston plate 401 to move downward in the piston cylinder 4. The space above the piston plate 401 expands to form a negative pressure, which can evacuate the hollow seat 5 through the connecting pipe 501. The hollow seat 5 then forms a negative pressure inside the lower mold base 3 through the vent pipe 502. Under atmospheric pressure, the top plate 301 moves downward along the slide groove and fits against the bottom of the inner cavity of the lower mold base 3. This can prevent the top plate 301 from protruding and affecting the flat placement of the raw material sheet, ensuring that the raw material sheet and the mold are completely fitted during stamping, and ensuring the dimensional accuracy of the outer shell.

[0035] As the lifting plate 202 continues to move downward, the upper mold base 203 and the lower mold base 3 close together, completing the stamping of the battery casing. After stamping, the output shaft of the hydraulic cylinder 201 retracts, causing the lifting plate 202 to move upward. The trapezoidal push block 6 disengages from the trapezoidal seat 7, and the trapezoidal seat 7 resets under the elastic force of the spring 702. The straightening plate 701 releases its clamping, preventing obstruction of the finished product from being removed. At the same time, the lifting plate 202 drives the piston plate 401 to move upward. The gas in the piston cylinder 4 is compressed and pressed into the hollow seat 5 through the connecting pipe 501, and then inflated into the lower mold base 3 through the vent pipe 502. The air pressure in the lower mold base 3 increases, which can push the top plate 301 to move upward along the slide groove, thus enabling the formed battery casing to be ejected from the lower mold base 3. This achieves automatic demolding, facilitates rapid material removal, effectively improves the stamping efficiency and forming quality of the battery casing, and reduces the cost of manual intervention.

Claims

1. A battery casing stamping and forming apparatus, characterized in that, Includes a base box (1), a support frame (2) is fixedly installed on the rear side of the base box (1), a stamping mechanism is provided on the support frame (2), a lower mold base (3) is fixedly installed on the top of the base box (1), two through holes (9) are opened on the top of the base box (1), the lower mold base (3) is located between the two through holes (9), a limit plate (302) is fixedly installed on the front and rear sides of the top of the lower mold base (3), and an ejection mechanism is provided inside the lower mold base (3); A piston cylinder (4) is fixedly installed on the bottom inner wall of the bottom box (1). A piston mechanism is provided inside the piston cylinder (4). A hollow seat (5) is fixedly installed on the top inner wall of the bottom box (1). A pneumatic mechanism is provided between the hollow seat (5) and the lower mold base (3). A straightening mechanism is provided on the top of the bottom box (1). A controller is provided on the front side of the bottom box (1).

2. The battery casing stamping and forming apparatus according to claim 1, characterized in that: The stamping mechanism includes a hydraulic cylinder (201), a lifting plate (202) and an upper die holder (203). The hydraulic cylinder (201) is fixedly installed on the top of the support frame (2). The lifting plate (202) is fixedly installed at the bottom of the output shaft of the hydraulic cylinder (201). The lifting plate (202) is located inside the support frame (2). The upper die holder (203) is fixedly installed at the bottom of the lifting plate (202). The upper die holder (203) is adapted to the lower die holder (3).

3. The battery casing stamping and forming apparatus according to claim 2, characterized in that: The straightening mechanism includes two trapezoidal seats (7) and two straightening plates (701). Two trapezoidal seats (7) are slidably installed on the top of the bottom box (1). The trapezoidal seats (7) are located outside the lower mold base (3). The through hole (9) is located below the trapezoidal seats (7). The straightening plate (701) is fixedly installed on the top of the trapezoidal seats (7).

4. The battery casing stamping and forming apparatus according to claim 3, characterized in that: A trapezoidal push block (6) is fixedly installed at the bottom of the lifting plate (202). The trapezoidal push block (6) is located outside the upper mold base (203). The trapezoidal push block (6) is compatible with the trapezoidal base (7) and the through hole (9).

5. The battery casing stamping and forming apparatus according to claim 1, characterized in that: The piston mechanism includes a piston plate (401) and a piston rod (402). The piston plate (401) is slidably installed inside the piston cylinder (4). The piston rod (402) is fixedly installed on the top of the piston plate (401). The top of the piston rod (402) is fixedly connected to the bottom of the lifting plate (202). The piston rod (402) is located outside the trapezoidal push block (6). A pressure relief pipe (8) is fixedly installed on the outside of the piston cylinder (4). The pressure relief pipe (8) extends to the outside of the bottom box (1). The piston plate (401) is located above the pressure relief pipe (8).

6. The battery casing stamping and forming apparatus according to claim 1, characterized in that: The pneumatic mechanism includes a connecting pipe (501) and a vent pipe (502). The connecting pipe (501) is fixedly installed on both sides of the hollow seat (5). The other end of the connecting pipe (501) is fixedly connected to the corresponding piston cylinder (4). The other end of the connecting pipe (501) is located above the piston plate (401). The hollow seat (5) and the lower mold base (3) are provided with the same vent pipe (502).

7. The battery casing stamping and forming apparatus according to claim 1, characterized in that: The ejection mechanism includes a top plate (301) and a slider. The top plate (301) is slidably installed inside the lower mold base (3). Sliders are provided on both sides of the top plate (301). Sliding grooves are provided on both sides of the inner wall of the lower mold base (3). The sliders are slidably connected to the sliding grooves.

8. The battery casing stamping and forming apparatus according to claim 3, characterized in that: A spring (702) is fixedly installed on the inner side of the trapezoidal base (7), and the other end of the spring (702) is fixedly connected to the outer side of the lower mold base (3).

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