Forming device for top cover of automobile battery box body and working method of forming device

Abstract

The invention discloses a forming device for an automobile battery box body top cover and a working method of the forming device, and particularly relates to the technical field of forming of new energy automobile box body top covers. A conveying transfer unit is arranged, the height of a transfer frame is kept consistent with the height of conveying tables on the two sides, and the battery box body top cover is conveyed by the conveying table on one side; a battery box body top cover is positioned through the positioning assembly, then the transfer frame is lowered, the battery box body top cover is subjected to punch forming, after punching is finished, the battery box body top cover is ejected to the position above the forming base through the ejection piece in the forming base, and the two conveying transfer units move towards the bottom of the battery box body top cover; under the pushing of the bevel edge of the top of the transmission plate and the bottom of the battery box body top cover, the bottom face of the battery box body top cover makes contact with the surface of the transfer roller, the formed battery box body top cover is conveyed through the transfer roller and the auxiliary wheel and conveyed into the conveying table on the other side, automatic machining of the battery box body top cover is completed, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of forming of the top cover of a new energy vehicle box body, and specifically to a forming device for the top cover of an automotive battery box body and its working method. Background Technique

[0002] The automotive battery box cover is used in conjunction with the automotive battery box to protect the automotive battery. First, raw materials (such as steel plates, aluminum alloys, etc.) are fed into the mold; then, a stamping machine applies pressure to the mold, causing the raw materials to undergo plastic deformation within the mold, thereby forming the required top cover shape; finally, the formed top cover is sent out of the mold.

[0003] After retrieval, the invention patent with the publication number CN111940605B discloses a forming structure for the top cover of a new energy vehicle battery box body, which is provided with a middle reserved ejector part, suitable for concave-convex structures with relatively shallow depth and relatively large width and reserving sufficient amount of materials to be stamped for them; designed with an end concave reserved component, suitable for concave-convex structures with relatively deep depth and relatively narrow width and reserving sufficient amount of materials to be stamped for them; compared with traditional molds, it effectively reduces the tensile deformation of the sheet material in the stiffener area, thereby improving the strength of the top cover.

[0004] In the existing solution, the forming of the top cover of the battery box body often adopts the stamping forming method. It is necessary to first transport the top cover of the battery box body to a specified position, and then complete the forming by pressing down. When there is a slight positioning error, the accuracy and fit between the top cover and the lower mold are reduced. Especially during mass production, the errors accumulate, resulting in unstable quality of subsequent products and affecting the stamping quality. Summary of the Invention

[0005] The purpose of the present invention is to provide a forming device for the top cover of an automotive battery box body and its working method to solve the problems mentioned in the above background technique.

[0006] The main technical problem to be solved by the present invention is:

[0007] In the existing solution, when there is a slight positioning error in the top cover of the battery box body, the accuracy and fit between the top cover and the lower mold are reduced. Especially during mass production, the errors accumulate, resulting in unstable quality of subsequent products and affecting the stamping quality.

[0008] The present invention can be realized through the following technical solutions:

[0009] A forming device for the top cover of an automotive battery box body, including a base. A transfer rack is arranged to be lifted in the middle of the top surface of the base. Conveyor tables for conveying and outputting are fitted and installed on both sides of the transfer rack. A through notch is arranged inside the transfer rack, and a forming seat for stamping the top cover of the battery box body is fixedly arranged inside the notch. The top surface height of the forming seat is lower than the conveying height of the two conveyor tables;

[0010] On both inner wall surfaces parallel to the upper part of the transfer rack, there are provided conveying and transfer units that move simultaneously closer to or away from each other.

[0011] The conveying and transfer unit includes a moving side plate and a transmission plate. The transmission plate is arranged in a U-shaped structure, and there is an inclined side at the top of the transmission plate. The transmission plate and the moving side plate are fixedly connected through a reinforcing block, and several transfer rollers are also installed between the transmission plate and the moving side plate. At both ends of the inner wall surfaces on both sides of the notch, there are provided vacant parts for the end face of the transmission plate to fit and slide. On the top surface of the transfer rack, there is installed a positioning component for limiting the top cover of the battery box body.

[0012] The positioning component includes a second positioning plate and a first positioning plate that slide in the vertical direction. The second positioning plate and the first positioning plate are respectively arranged on both sides of the top of the transfer rack and are used for limiting both sides of the top cover of the battery box body.

[0013] A further technical improvement of the present invention lies in that: the conveying and transfer unit further includes a transmission screw rod arranged inside two vacant parts on one side and driven by the same double-shaft motor. The transmission screw rod is threadedly connected to the corresponding moving side plate, and an auxiliary wheel that contacts the surface of the top cover of the battery box body is installed on the surface of the moving side plate.

[0014] At the end of each transmission screw rod, there is a rotatable connection with a fixed plate, and the fixed plate is arranged outside the transfer rack.

[0015] On the surface of each fixed plate away from the transmission screw rod, there is installed a fixed column. The fixed column is slidably arranged with the moving side plate and is fixed to the inner wall surface of the corresponding vacant part on the other side.

[0016] A further technical improvement of the present invention lies in that: sliders are installed on both outer wall surfaces of the transmission plate, and guiding tracks that are slidably matched with the corresponding sliders are embedded on the inner wall surface of the vacant part.

[0017] A further technical improvement of the present invention lies in that: on one side of the top of the transfer rack, there is installed a first driver for driving the second positioning plate to slide directionally in the vertical direction. The second positioning plate is arranged in an L-shaped structure, and a buffer plate is slidably installed inside the second positioning plate. A spring is provided between the buffer plate and the L-shaped end of the second positioning plate.

[0018] A further technical improvement of the present invention lies in that: on the other side of the top of the transfer rack, there is installed a second driver for driving the first positioning plate to slide directionally in the vertical direction. On one side of the bottom of the first positioning plate, there is an inclined slope edge, and the slope edge is in abutting contact with one side of the top cover of the battery box body.

[0019] A further technical improvement of the present invention lies in that: transfer rollers are embedded and installed on the upper surface of the conveying table, and the transfer rollers are arranged at the same height as the transfer rollers.

[0020] A further technical improvement of the present invention lies in that: the upper surface of the forming seat is provided with positioning posts adapted to the number of positioning holes on the top cover of the battery box body;

[0021] The outer part of the upper surface of the base is provided with a top plate connected by a support rod, and the lower part of the top plate is provided with an upper die driven by an oil cylinder to stamp the top cover of the battery box body into shape.

[0022] A further technical improvement of the present invention lies in that: two limiting rods are installed on both side edges of the upper surface of the base, and the extension plates on the outer surface of the bottom of the transfer rack are slidably arranged with the two limiting rods on the corresponding side;

[0023] Two lifting cylinders for synchronously driving the transfer rack to move in the vertical direction are embedded and installed on the upper surface of the base.

[0024] A working method of a forming device for the top cover of an automotive battery box body, the working method comprising the following steps:

[0025] Step 1: Initially, the conveying table and the transfer rack are at the same height and higher than the height of the forming seat. The top cover of the battery box body is conveyed by the conveying rollers on one side to the position of the transfer rollers, and the two sides of the top cover of the battery box body are limited by the positioning plate two and the positioning plate one respectively;

[0026] Step 2: Then the transfer rack descends in height, positions the positioning holes of the top cover of the battery box body with the corresponding positioning posts, and stamps the top cover of the battery box body into shape by the downward stamping of the upper die towards the forming seat;

[0027] Step 3: After forming, the top cover of the battery box body is ejected by the ejecting member in the forming seat and released from the restriction of the positioning posts. Then the transfer rack rises to the same height as the conveying table. The two conveying and transferring units on both sides approach each other under the drive of the transmission screw. After the transmission plate passes through the positioning posts above the forming seat, under the pushing of the hypotenuse of the transmission plate and the bottom of the top cover of the battery box body, the formed top cover of the battery box body is conveyed to the conveying rollers on the other side by the transfer rollers and the auxiliary wheels.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. By setting up a conveying and transfer unit, the height of the transfer rack is kept consistent with the heights of the two conveying platforms on both sides. The top cover of the battery box body is conveyed by one of the conveying platforms, and the positioning of the top cover of the battery box body is completed through the positioning component. Subsequently, the transfer rack descends in height, and the top cover of the battery box body is stamped into shape. After stamping, the ejecting part in the forming seat ejects the top cover of the battery box body. At this time, the top cover of the battery box body is located above the forming seat. Immediately afterwards, the two conveying and transfer units approach each other and move towards the bottom direction of the top cover of the battery box body. Under the pushing of the hypotenuse on the top of the transmission plate against the bottom of the top cover of the battery box body, the bottom surface of the top cover of the battery box body comes into contact with the surface of the transfer roller. The formed top cover of the battery box body is conveyed by the transfer roller and the auxiliary wheel and is conveyed to the conveying platform on the other side, completing the automated processing of the top cover of the battery box body and improving production efficiency.

[0030] 2. By setting up the positioning component, when one side of the top cover of the battery box body contacts the buffer plate, the driver two pushes the positioning plate one downward. Under the pushing of the other side of the top cover of the battery box body by the ramp edge, one side of the top cover of the battery box body pushes the buffer plate to slide on the positioning plate two and compresses the spring. The spring undergoes elastic deformation, completing the positioning of the top cover of the battery box body, facilitating the rapid alignment of the positioning holes and positioning posts in the top cover of the battery box body. After the transfer rack descends in height, it drives the cooperation and installation of the positioning holes and positioning posts of the top cover of the battery box body, completing the precise positioning of the top cover of the battery box body, improving the calibration efficiency, avoiding position deviation during forming, and improving the forming quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] For the convenience of those skilled in the art to understand, the present invention will be further described below in conjunction with the accompanying drawings.

[0032] Figure 1 is a schematic diagram of the external structure of the present invention;

[0033] Figure 2 For the present invention Figure 1 is a partial enlarged view of part A in;

[0034] Figure 3 is a three-dimensional structure diagram of the transmission plate of the present invention;

[0035] Figure 4 is a schematic diagram of the installation structure of the transfer rack and the base of the present invention;

[0036] Figure 5 is a schematic diagram of the installation structure of the transmission plate and the moving side plate of the present invention.

[0037] In the figure: 1. Base; 2. Transfer rack; 3. Movable side plate; 4. Limit rod; 5. Fixed plate; 6. Forming seat; 7. First positioning plate; 9. Conveyor table; 10. Conveyor roller; 11. Second positioning plate; 12. Top plate; 13. Vacant part; 14. Notch; 15. Driving screw; 16. Positioning column; 17. Driving plate; 18. Slide block; 19. Transfer roller; 20. Buffer plate; 21. Spring; 22. Jacking cylinder; 23. First driver; 24. Second driver; 25. Fixed column; 26. Guide track; 27. Sloping edge. Detailed implementation manners

[0038] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following, in combination with the accompanying drawings and preferred embodiments, details the specific implementation manners, structures, features and their effects of the present invention as follows.

[0039] Please refer to Figures 1 - 5 As shown, the present invention provides a forming device for the top cover of an automotive battery box, including a base 1. A transfer rack 2 is vertically arranged in the middle of the top surface of the base 1. Conveyor tables 9 for conveying and outputting are respectively and fittingly installed on both sides of the transfer rack 2. A through notch 14 is provided inside the transfer rack 2. A forming seat 6 for stamping the top cover of the battery box is fixedly arranged inside the notch 14. The top surface height of the forming seat 6 is lower than the conveying height of the two conveyor tables 9.

[0040] On the two inner wall surfaces parallel to the upper part of the transfer rack 2, there are both provided conveying and transfer units that move simultaneously closer to or away from each other.

[0041] The conveying and transfer unit includes a movable side plate 3 and a driving plate 17. The driving plate 17 is arranged in a U-shaped structure, and a sloping edge is provided at the top of the driving plate 17. The driving plate 17 and the movable side plate 3 are fixedly connected through a reinforcing block, and a plurality of transfer rollers 19 are also installed between the driving plate 17 and the movable side plate 3. At the ends of the two inner wall surfaces of the notch 14, there are both provided vacant parts 13 for the end face of the driving plate 17 to fit and slide. A positioning component for limiting the top cover of the battery box is installed on the top surface of the transfer rack 2.

[0042] The positioning component includes a second positioning plate 11 and a first positioning plate 7 that slide in the vertical direction. The second positioning plate 11 and the first positioning plate 7 are respectively arranged on both sides of the top of the transfer rack 2 and are used for limiting both sides of the top cover of the battery box.

[0043] Before punching the top cover of the battery box, reinforcing ribs are added to the top cover of the battery box to enhance the strength of the cover and improve the deformation resistance of the top cover. The height of the transfer rack 2 is consistent with the height of the conveying platforms 9 on both sides. The top cover of the battery box is transported by the conveying platform 9 on one side, and is transported by the transfer roller 19 to the surface of the transfer rack 2. The positioning plate 11 on one side first blocks and positions one side of the top cover of the battery box, and then the positioning plate 7 on the other side blocks the other side of the top cover of the battery box downward to complete the positioning of the top cover of the battery box. Subsequently, the transfer rack 2 is lowered to complete the positioning of the top cover of the battery box, thereby avoiding position deviation during molding and improving The molding quality is improved, and then the battery box top cover is stamped and formed. After the stamping is completed, the ejector in the forming seat 6 exerts a uniform ejecting external force to eject the battery box top cover. At this time, the battery box top cover is located above the forming seat 6, and then the two conveying transfer units approach each other and move toward the bottom direction of the battery box top cover. Under the push of the beveled edge at the top of the transmission plate 17 and the bottom of the battery box top cover, the bottom surface of the battery box top cover contacts the surface of the transfer roller 19 at this time, and the formed battery box top cover is assisted by the transfer roller 19 to be conveyed to the conveying table 9 on the other side, thereby completing the automated processing of the battery box top cover and improving production efficiency.

[0044] See also Figure 1 , Figure 2 and Figure 5 As shown, the transport transfer unit also includes a transmission screw 15 disposed inside the two vacant portions 13 on one side and driven by the same dual-axis motor, the transmission screw 15 is threadedly connected to the corresponding movable side plate 3, and the surface of the movable side plate 3 is equipped with auxiliary wheels in contact with the surface of the top cover of the battery box;

[0045] The end of each transmission screw 15 is rotatably connected to a fixing plate 5, and the fixing plate 5 is arranged on the outer side of the transfer frame 2;

[0046] A fixed column 25 is installed on the surface of one side of each fixed plate 5 away from the driving screw 15. The fixed column 25 is slidably arranged with the movable side plate 3 and fixed with the inner wall surface of the corresponding vacant part 13 on the other side;

[0047] A conveying roller 10 is embedded and installed on the upper surface of the conveying platform 9 , and the conveying roller 10 is arranged flush with the transfer roller 19 at the same height.

[0048] Initially, the transfer roller 19 in the transfer and conveying unit is at the same height as the conveying roller 10. The battery box top cover reaches the position of the transfer roller 19 through the conveying roller 10. At this time, the transfer rack 2 descends in height to position the hole of the battery box top cover, facilitating the stamping operation. After forming, the ejector in the forming seat 6 first ejects the battery box top cover, pushing it to a height higher than the forming seat 6. Immediately afterwards, the transfer rack 2 rises to the initial height, that is, the same height as the conveying table 9. Under the rotation of the driving screw 15, the corresponding moving side plate 3 and the driving plate 17 slide together, and the two transfer and conveying units on both sides approach each other. The hypotenuse at the top of the driving plate 17 abuts against the bottom of the battery box top cover, lifting the bottom of the battery box top cover and making it contact the transfer roller 19. When the auxiliary wheel contacts the side of the battery box top cover, the transmission of the moving side plate 3 stops, and the battery box top cover is conveyed through the transfer roller 19 and the auxiliary wheel.

[0049] Refer to Figure 2 and Figure 3 As shown, sliders 18 are installed on both outer wall surfaces of the driving plate 17, and guiding tracks 26 that are slidably matched with the corresponding sliders 18 are embedded in the inner wall surface of the vacant part 13. During the sliding process, the sliders 18 in the driving plate 17 always slide directionally along the guiding tracks 26 to ensure stability during sliding.

[0050] Refer to Figure 4 As shown, a driver one 23 for driving the positioning plate two 11 to slide directionally in the vertical direction is installed on one side of the top of the transfer rack 2. The positioning plate two 11 is provided with an L-shaped structure, and a buffer plate 20 is slidably installed inside the positioning plate two 11. A spring 21 is provided between the buffer plate 20 and the L-shaped end of the positioning plate two 11;

[0051] On the other side of the top of the transfer rack 2, a driver two 24 for driving the positioning plate one 7 to slide directionally in the vertical direction is installed. An inclined slope edge 27 is provided on one side of the bottom of the positioning plate one 7, and the slope edge 27 abuts against one side of the battery box top cover. When the battery box top cover enters the transfer roller 19 in the transfer rack 2, the driver one 23 pushes the positioning plate two 11 downward to block one side of the battery box top cover. When one side of the battery box top cover contacts the buffer plate 20, the driver two 24 pushes the positioning plate one 7 downward. Under the pushing of the slope edge 27 against the other side of the battery box top cover, one side of the battery box top cover pushes the buffer plate 20 to slide on the positioning plate two 11 and compresses the spring 21. The spring 21 undergoes elastic deformation to complete the positioning of the battery box top cover, facilitating the rapid alignment of the positioning hole in the battery box top cover with the positioning post 16 and improving the calibration efficiency.

[0052] Refer to Figure 1 and Figure 2As shown, the upper surface of the forming seat 6 is provided with positioning posts 16 whose number matches the positioning holes of the battery box top cover, so as to accurately position the battery box top cover and avoid deviation during stamping;

[0053] The upper surface of the base 1 is provided with a top plate 12 connected by a support rod. The lower part of the top plate 12 is provided with an upper die driven by a cylinder to stamp the top cover of the battery box. The stamping of the top cover of the battery box is completed by pressing down the upper die.

[0054] See also Figure 1 and Figure 4 As shown, two limit rods 4 are installed on the two side edges of the upper surface of the base 1, and the extension plate on the outer surface of the bottom of the transfer frame 2 is slidably arranged with the two limit rods 4 on the corresponding sides;

[0055] Two lifting cylinders 22 are embedded on the upper surface of the base 1 to synchronously drive the transfer frame 2 to move in the vertical direction. The transfer frame 2 is lifted up or down by the lifting cylinders 22, thereby realizing the positioning, stamping and discharging actions of the battery box top cover.

[0056] The present invention provides a working method of a molding device for a top cover of a vehicle battery box, the working method comprising the following steps:

[0057] Step 1: Initially, the conveying platform 9 and the transfer rack 2 are at the same height and higher than the height of the forming seat 6. The battery box cover is conveyed to the position of the transfer roller 19 by the conveying roller 10 on one side, and the positioning plate 2 11 and the positioning plate 1 7 respectively limit the two sides of the battery box cover;

[0058] Step 2: Then the transfer rack 2 is lowered to position the positioning holes of the battery box top cover with the corresponding positioning columns 16, and the battery box top cover is stamped and formed by pressing the upper die downward toward the forming seat 6;

[0059] Step 3. After molding, the top cover of the battery box is ejected by the ejector in the molding seat 6 and is free from the restriction of the positioning column 16. Then the transfer frame 2 is raised to the same height as the conveying platform 9. The conveying transfer units on both sides are driven by the transmission screw 15 to approach each other. After the transmission plate 17 passes through the positioning column 16 above the molding seat 6, the formed battery box top cover is transported to the conveying roller 10 on the other side by the transfer roller 19 and the auxiliary wheel under the push of the oblique edge of the transmission plate 17 and the bottom of the battery box top cover.

[0060] When the present invention is in use, by setting up a conveying and transfer unit, the height of the transfer rack 2 is kept consistent with the heights of the two conveying platforms 9 on both sides. The top cover of the battery box body is conveyed by the conveying platform 9 on one side, and the positioning of the top cover of the battery box body is completed through the positioning component. Subsequently, the transfer rack 2 descends in height, and the top cover of the battery box body is stamped into shape. After stamping, the ejecting member in the forming seat 6 ejects the top cover of the battery box body. At this time, the top cover of the battery box body is located above the forming seat 6. Immediately afterwards, the two conveying and transfer units approach each other and move towards the bottom direction of the top cover of the battery box body. Under the pushing of the hypotenuse on the top of the transmission plate 17 against the bottom of the top cover of the battery box body, the bottom surface of the top cover of the battery box body contacts the surface of the transfer roller 19. The formed top cover of the battery box body is conveyed by the transfer roller 19 and the auxiliary wheel, and is conveyed to the conveying platform 9 on the other side, completing the automated processing of the top cover of the battery box body and improving production efficiency;

[0061] By setting up the positioning component, when one side of the top cover of the battery box body contacts the buffer plate 20, the driver two 24 pushes the positioning plate one 7 downward. Under the pushing of the ramp edge 27 against the other side of the top cover of the battery box body, one side of the top cover of the battery box body is pushed to make the buffer plate 20 slide on the positioning plate two 11 and compress the spring 21. The spring 21 undergoes elastic deformation, completing the positioning of the top cover of the battery box body, facilitating the rapid alignment of the positioning holes in the top cover of the battery box body with the positioning posts 16. After the transfer rack 2 descends in height, it drives the cooperation and installation of the positioning holes in the top cover of the battery box body and the positioning posts 16, completing the precise positioning of the top cover of the battery box body, improving the calibration efficiency, avoiding position deviation during forming, and improving the forming quality.

[0062] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to form equivalent embodiments with equivalent changes, but as long as it does not depart from the technical content of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A molding device for a top cover of a vehicle battery box, comprising a base (1), characterized in that: A transfer frame (2) is provided in the middle of the top surface of the base (1) for lifting, and conveying platforms (9) for conveying and outputting are fitted on both sides of the transfer frame (2). A through notch (14) is provided inside the transfer frame (2), and a forming seat (6) for punching the top cover of the battery box is fixed inside the notch (14), and the top surface height of the forming seat (6) is lower than the conveying height of the two conveying platforms (9); The two parallel inner wall surfaces on the upper part of the transfer rack (2) are both provided with a conveying transfer unit that can move towards or away from the transfer rack at the same time; The conveying transfer unit comprises a movable side plate (3) and a transmission plate (17), wherein the transmission plate (17) is arranged in a U-shaped structure, and a bevel is arranged on the top of the transmission plate (17), the transmission plate (17) and the movable side plate (3) are connected and fixed by a reinforcing block, and a plurality of transfer rollers (19) are also installed between the transmission plate (17) and the movable side plate (3), and the inner wall ends on both sides of the notch (14) are provided with a vacant portion (13) for the end face of the transmission plate (17) to slide with adaptation, and a positioning component for limiting the top cover of the battery box body is installed on the top surface of the transfer frame (2); The positioning assembly comprises a second positioning plate (11) and a first positioning plate (7) which slide in the vertical direction. The second positioning plate (11) and the first positioning plate (7) are respectively arranged on both sides of the top of the transfer rack (2) and are used to limit the positions of both sides of the top cover of the battery box.

2. The molding device for the top cover of the automobile battery box according to claim 1, characterized in that: The transport transfer unit also includes a transmission screw (15) arranged inside the two vacant parts (13) on one side and driven by the same dual-axis motor, the transmission screw (15) being threadedly connected to the corresponding movable side plate (3), and the surface of the movable side plate (3) is equipped with auxiliary wheels in contact with the surface of the top cover of the battery box; The end of each transmission screw (15) is rotatably connected to a fixing plate (5), and the fixing plate (5) is arranged on the outer side of the transfer frame (2); A fixing column (25) is installed on the surface of one side of each fixing plate (5) away from the driving screw (15), and the fixing column (25) is slidably arranged with the movable side plate (3) and fixed with the inner wall surface of the corresponding vacant part (13) on the other side.

3. The molding device for the top cover of the automobile battery box according to claim 2, characterized in that: Slide blocks (18) are installed on both outer wall surfaces of the transmission plate (17), and the inner wall surface of the vacant portion (13) is embedded with a guide track (26) that slidably matches with the corresponding slide blocks (18).

4. The molding device for the top cover of the automobile battery box according to claim 3, characterized in that: A driver (23) for driving the second positioning plate (11) to slide in a vertical direction is installed on one side of the top of the transfer frame (2). The second positioning plate (11) is configured as an L-shaped structure, and a buffer plate (20) is slidably installed inside the second positioning plate (11). A spring (21) is provided between the buffer plate (20) and the L-shaped end of the second positioning plate (11).

5. The molding device for the top cover of the automobile battery box according to claim 4, characterized in that: A second driver (24) for driving the first positioning plate (7) to slide in a vertical direction is installed on the other side of the top of the transfer rack (2). An inclined slope edge (27) is provided on one side of the bottom of the first positioning plate (7). The slope edge (27) is in abutment with one side of the top cover of the battery box.

6. The molding device for the top cover of the automobile battery box according to claim 5, characterized in that: A conveying roller (10) is embedded and installed on the upper surface of the conveying platform (9), and the conveying roller (10) is arranged flush with the transfer roller (19) at the same height.

7. The molding device for the top cover of the automobile battery box according to claim 6, characterized in that: The upper surface of the forming seat (6) is provided with positioning posts (16) whose number matches the positioning holes of the top cover of the battery box; A top plate (12) connected by support rods is provided on the outside of the upper surface of the base (1), and an upper die driven by an oil cylinder to stamp and form the top cover of the battery box is provided on the lower part of the top plate (12).

8. The molding device for the top cover of the automobile battery box according to claim 7, characterized in that: Two limit rods (4) are installed on the two side edges of the upper surface of the base (1), and the extension plate on the outer surface of the bottom of the transfer rack (2) is slidably arranged with the two limit rods (4) on the corresponding sides; Two lifting cylinders (22) for synchronously driving the transfer frame (2) to move in the vertical direction are embedded and installed on the upper surface of the base (1).

9. The working method of the automobile battery box top cover forming device according to claim 8, characterized in that: The working method comprises the following steps: Step 1: Initially, the conveying platform (9) and the transfer rack (2) are at the same height and higher than the height of the forming seat (6), the battery box top cover is conveyed to the position of the transfer roller (19) by the conveying roller (10) on one side, and the positioning plate 2 (11) and the positioning plate 1 (7) respectively limit the two sides of the battery box top cover; Step 2: the transfer rack (2) is then lowered to position the battery box top cover positioning holes with the corresponding positioning columns (16), and the battery box top cover is punched and formed by pressing the upper die downward toward the forming seat (6); Step 3: After forming, the top cover of the battery box is ejected by the ejector in the forming seat (6) and is free from the restriction of the positioning column (16). Then, the transfer frame (2) is raised to a height equal to that of the conveying platform (9). The conveying transfer units on both sides are driven by the transmission screw (15) to approach each other. After the transmission plate (17) passes through the positioning column (16) above the forming seat (6), the formed top cover of the battery box is transported to the conveying roller (10) on the other side by the transfer roller (19) and the auxiliary wheel under the push of the inclined edge of the transmission plate (17) and the bottom of the top cover of the battery box.

Images