A riveting processing equipment and its process for an insulating plastic bracket under a lithium battery cover plate

Abstract

The present invention discloses a riveting processing device and process for an insulating plastic bracket under a lithium battery cover plate, which relates to the technical field of lithium battery manufacturing. The aim is to solve the technical problem that during the riveting process, the manual holding method easily causes the position deviation between the lithium battery cover plate and the insulating plastic bracket, resulting in the pressure applied by the punch being easily exerted on the lithium battery cover plate and the insulating plastic bracket, causing them to deform. It includes an operating table, on the top surface of which a riveting assembly and a feeding assembly are arranged. The riveting assembly includes a positioning assembly and a clamping plate, and the feeding assembly includes a linkage rod, a feeding plate and a positioning block. The present invention has the advantages of ensuring the accurate position of the lithium battery cover plate and the insulating plastic bracket during the riveting process, avoiding bending and distortion of the lithium battery cover plate and the insulating plastic bracket during the riveting process, thereby improving the assembly accuracy of the lithium battery with other components and enhancing the overall performance and reliability of the lithium battery.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery manufacturing, and more specifically, to a riveting processing device and process for an insulating plastic bracket under a lithium battery cover plate. Background Art

[0002] The riveting of a lithium battery cover plate and an insulating plastic bracket is an important link in lithium battery production. The main function of the insulating plastic bracket is to provide electrical insulation to prevent short circuits between the positive and negative electrodes inside the battery. By riveting with the cover plate, the position of the insulating plastic bracket can be fixed, effectively playing its insulating role, firmly connecting the lithium battery cover plate and the insulating plastic bracket together, ensuring that the two will not separate during the use of the battery, and guaranteeing the structural stability of the lithium battery.

[0003] The existing riveting process for a lithium battery cover plate and an insulating plastic bracket is usually realized based on a special riveting device. Generally, the lithium battery cover plate and the insulating plastic bracket are held manually and placed under the punch of the riveting device for riveting operation. This method is simple to operate, but during the riveting process, the manual holding method is likely to cause the positions of the lithium battery cover plate and the insulating plastic bracket to shift, resulting in the pressure applied by the punch being easily exerted on the lithium battery cover plate and the insulating plastic bracket, causing deformation of the lithium battery cover plate and the insulating plastic bracket, and further causing changes in the overall dimensions of the product. This not only affects the assembly accuracy of the lithium battery with other components, but also affects the overall performance and reliability of the lithium battery. In view of this, we propose a riveting processing device and process for an insulating plastic bracket under a lithium battery cover plate. Summary of the Invention

[0004] The purpose of the present invention is to provide a riveting processing device and process for an insulating plastic bracket under a lithium battery cover plate to solve the technical problem that during the riveting process, the manual holding method is likely to cause the positions of the lithium battery cover plate and the insulating plastic bracket to shift, resulting in the pressure applied by the punch being easily exerted on the lithium battery cover plate and the insulating plastic bracket, causing them to deform.

[0005] To solve the above technical problem, the present invention provides the following technical solution: A riveting processing device for an insulating plastic bracket under a lithium battery cover plate, including an operating table, and a riveting assembly and a feeding assembly are arranged on the top surface of the operating table;

[0006] The riveting assembly includes a fixed bracket disposed on the top surface of the operating table and two symmetrically distributed support blocks. A hydraulic cylinder is arranged on the top of the fixed bracket, and a punch is connected to the output end of the hydraulic cylinder. A riveting seat is arranged above the support block, a positioning assembly is arranged on the side wall of the riveting seat, and a clamping plate is arranged above the riveting seat. The feeding assembly includes a bottom plate and a telescopic motor disposed on the top surface of the operating table. Two slide rails are symmetrically arranged on the top surface of the bottom plate, and a push-pull rod is slidably connected to the top surface of the slide rails. The output end of the telescopic motor is connected to the side wall of the push-pull rod. The upper parts at both ends of the push-pull rod are symmetrically arranged with the same structural components. A first rack is connected to the top surface of one end, a wheel rail is arranged on the top surface of the first rack, a first support plate is connected to the end of the slide rail, a second support plate connected to the top surface of the bottom plate is arranged on the side of the first support plate, a first gear meshing with the first rack and a pulley slidably connected to the top surface of the wheel rail are rotatably connected to the side wall of the first support plate. A rotating rod is connected to the side wall of the first gear, the rotating rod penetrates through the side walls of the first support plate and the second support plate, a rotating plate connected to the circumferential side wall of the rotating rod is arranged between the first support plate and the second support plate, a second gear is fixedly connected to the side wall of the second support plate, a circular hole is formed in the side wall of the second gear, and the rotating rod is in clearance fit with the second gear through penetrating the circular hole. A third gear is rotatably connected to the side wall of the rotating plate, the third gear meshes with the second gear, and a linkage rod is rotatably connected to the side wall of the rotating plate. The feeding assembly is in linkage cooperation with the positioning assembly. When the feeding assembly feeds the lithium battery cover plate and the insulating plastic bracket onto the riveting seat, it synchronously drives the positioning assembly to position the lithium battery cover plate and the insulating plastic bracket, ensuring the accurate position of the lithium battery cover plate and the insulating plastic bracket during the riveting process, and clamping and supporting the lithium battery cover plate and the insulating plastic bracket through the clamping plate and the riveting seat, avoiding bending and distortion of the lithium battery cover plate and the insulating plastic bracket during the riveting process.

[0007] Preferably, there are two linkage rods. A fourth gear meshing with the output end of the third gear is fixedly connected to the circumferential outer wall of the linkage rods. The two linkage rods are connected by a curved rod. Feeding plates and positioning blocks with the same structure are connected to the circumferential side walls of the two linkage rods. A plurality of rotating cylinders are rotatably connected to the circumferential side wall of the curved rod. The feeding plate is a long strip-shaped plate structure, and the top surface of the positioning block is set to a curved surface shape matching the bottom structure of the insulating plastic bracket.

[0008] Preferably, a first support column and two second support columns are connected to the top surface of the support block. A riveting column is connected to the top surface of the second support column. The riveting column is a cylindrical structure matching the shape of the rivet, and the riveting column is used to support the bottom of the rivet.

[0009] Preferably, the rivet seat is composed of a bearing plate and two fixed blocks, and the two fixed blocks are respectively connected to the symmetrical two side walls of the bearing plate; the bottom surface of the bearing plate is connected to the top surface of the second support column, the bearing plate is provided with rivet holes from top to bottom, the rivet columns are arranged in the rivet holes, the top surface of the rivet columns is flush with the top surface of the rivet holes, and the top surface of the bearing plate is provided with a plurality of placement grooves 1 corresponding to the feeding plate and a plurality of placement grooves 2 corresponding to the positioning blocks; the bottom surface of the fixed block is connected to the top surface of the first support column, the fixed block is provided with a long groove from top to bottom, and the top surface of the fixed block is connected with a sliding column.

[0010] Preferably, a plurality of stamping columns corresponding to the rivet columns are provided on the bottom surface of the punch, and there are four stamping columns arranged in four corners. The stamping columns are used to press down on the top surface of the rivet, and cooperate with the supporting effect of the rivet column on the bottom of the rivet to cause the rivet to undergo plastic deformation. A rivet head is formed at the bottom of the rivet, which fits tightly with the surface of the insulating plastic bracket, so that the lithium battery cover and the insulating plastic bracket are riveted and fixed.

[0011] Preferably, the positioning assembly includes two sliding rods passing through the side wall of the supporting plate, the two sliding rods are connected to positioning push blocks at their ends, the other ends of the two sliding rods are connected by a connecting rod, the side wall of the supporting plate is connected to two fixed frames corresponding to the sliding rods, the sliding rod body passes through the side wall of the fixed frame, a spring 1 is arranged in the internal space of the fixed frame and is sleeved on the circumferential outer wall of the sliding rod, a limiting ring plate is provided on the circumferential outer wall of the sliding rod, one end of the spring 1 is connected to the side wall of the limiting ring plate, and the other end is connected to the inner wall of the fixed frame.

[0012] Preferably, the side wall of the supporting plate is also connected to a gear plate, the bottom surface of the gear plate is rotatably connected to a gear five, the circumferential side wall of the connecting rod is connected to a rack two meshing with the output end of the gear five, the gear five is coaxially connected to a gear six, the output end of the gear six is ​​transmission connected to a gear seven through a toothed belt, the gear seven is coaxially connected to a gear eight rotatably connected to the bottom surface of the supporting plate, and the gear eight is symmetrically meshed with a rack three and a rack four on both sides; one end of the rack three is connected to a sliding rod, the bottom surface of the sliding rod is slidably connected to a track frame fixedly connected to the bottom surface of the supporting plate, the top surface of the other end of the sliding rod is connected to a positioning plate that passes through the long groove, the plate body of the positioning plate is movably matched with the long groove, and the top surface of the positioning plate is a flat plate-like structure.

[0013] Preferably, the top surface of the positioning push block is connected to two vertical plates, the side wall of the positioning push block is arranged as a combination structure of an inclined surface and a vertical surface corresponding to the rotating cylinder, and a groove is provided on the top surface of the positioning push block, and the groove is used to prevent the movement of the lithium battery cover plate and the insulating plastic bracket from being obstructed during the feeding process.

[0014] Preferably, the clamping plate is provided with a sliding hole matching the sliding column and a slot adapted to the shape of the positioning plate from top to bottom. The clamping plate is slidably connected to the sliding column through the sliding hole. A plurality of second springs sleeved on the circumferential side wall of the sliding column are connected to the top surface of the clamping plate. The top surface of the second springs is connected to the bottom surface of the punch. The sliding column penetrates through the bottom surface of the punch and is slidably matched with the punch. A pressing groove matching the shape of the fixed block is formed in the bottom surface of the clamping plate. A plurality of punching holes corresponding to the punching columns are provided in the clamping plate from top to bottom.

[0015] A riveting process for an insulating plastic bracket under a lithium battery cover plate includes the following steps:

[0016] S1. Feeding operation: Place the insulating plastic bracket on the top surfaces of the feeding plate and the positioning block, align the bottom surface of the insulating plastic bracket with the positioning block, then place the lithium battery cover plate on the top surface of the insulating plastic bracket and align them, and place the rivet in the reserved holes of the lithium battery cover plate and the insulating plastic bracket.

[0017] S2. Feeding operation: Through the operation of the telescopic motor, pull the push rod to slide inward along the two slide rails. During the sliding process, drive the first rack to slide inward, and push the first gear to rotate, further drive the rotating rod to rotate. The rotating rod drives the rotating plate to rotate, and the rotating plate drives the linkage rod to rotate accordingly. During the rotation of the rotating plate, the third gear on its side wall rotates around the second gear. Since the second gear is fixedly connected to the side wall of the second support plate, the second gear does not rotate. The third gear drives the fourth gear to rotate, and the fourth gear drives the linkage rod to rotate. The rotation direction of the linkage rod is opposite to the rotation direction of the rotating plate driving the linkage rod, so that the circumferential outer wall of the linkage rod is consistent with its initial state direction, so that the top surfaces of the feeding plate and the positioning block on the side wall of the linkage rod can always maintain a horizontal state, and further enable the lithium battery cover plate and the insulating plastic bracket placed above it to be more stably transported along the circular arc trajectory to the bearing plate of the riveting seat. When the bottom of the insulating plastic bracket gradually slides into the bearing plate, the feeding plate will gradually drop along the entrance of the first placement groove, and the positioning block will gradually drop along the entrance of the second placement groove, so that the bottom of the insulating plastic bracket completely contacts the top surface of the bearing plate.

[0018] S3. Positioning operation: When the bottom of the insulating plastic bracket is in full contact with the top surface of the bearing plate, the rotating plate still continues to rotate, driving the linkage rod to move forward until the feeding plate and the positioning block respectively fall to the bottoms of the corresponding placement grooves 1 and 2. During the forward movement of the linkage rod, the outer circumferences of the multiple rotating cylinders on the circumferential side wall of the curved rod will gradually come into contact with the inclined surface of the positioning push block. The multiple rotating cylinders roll along the inclined surface of the positioning push block during the forward movement and push the positioning push block forward. The forward movement of the positioning push block will push the insulating plastic bracket completely onto the top surface of the bearing plate. The two vertical plates at the top of the positioning push block will push the lithium battery cover plate to move synchronously with the insulating plastic bracket, positioning the lithium battery cover plate and the insulating plastic bracket in the center. During the forward movement of the positioning push block, it will drive the two sliding rods to slide forward, further driving the connecting rod to move forward. The connecting rod drives the second rack to move forward. The second rack drives the fifth gear to rotate. The fifth gear drives the eighth gear to rotate through the transmission structure composed of the sixth gear, the toothed belt, and the seventh gear. The eighth gear drives the third rack and the fourth rack meshed with it on both sides to move in the same direction, causing the two positioning plates to move towards each other and pushing the lithium battery cover plate to be centered in the direction of the movement of the positioning plates, positioning the other two sides of the lithium battery cover plate and the insulating plastic bracket in the center. Through the positioning push block and the two positioning plates, the lithium battery cover plate and the insulating plastic bracket are firmly positioned and are difficult to displace horizontally;

[0019] S4. Riveting operation: After completing the positioning operation of the lithium battery cover plate and the insulating plastic bracket, the hydraulic cylinder works to push the punch down. During the process of the punch being pushed down, it drives the clamping plate to press down on the top surface of the riveting seat. At this time, the clamping plate and the riveting seat form an up-and-down clamping effect on the lithium battery cover plate and the insulating plastic bracket. The punching post at the bottom of the punch presses down on the rivet through the punching hole, and with the supporting effect of the riveting post on the bottom of the rivet, the rivet is stressed and undergoes plastic deformation, completing the riveting operation of the lithium battery cover plate and the insulating plastic bracket;

[0020] S5. Unloading operation: After completing the riveting operation, the telescopic motor reversely pushes the push-pull rod to move outward along the two slide rails, causing the feeding plate and the positioning block to take the riveted lithium battery cover plate and insulating plastic bracket out of the riveting seat and taking out the finished product.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. Through the linkage cooperation design of the feeding component and the positioning component, when the feeding component feeds the lithium battery cover plate and the insulating plastic bracket onto the riveting seat, it can synchronously drive the positioning component to position the lithium battery cover plate and the insulating plastic bracket, ensuring the accurate position of the lithium battery cover plate and the insulating plastic bracket during the riveting process, avoiding uneven deformation caused by position deviation, and clamping and supporting the lithium battery cover plate and the insulating plastic bracket in the vertical direction through the clamping plate and the riveting seat, avoiding bending and twisting of the lithium battery cover plate and the insulating plastic bracket during the riveting process. Then, through the operation of the hydraulic cylinder, the punch is driven to press down, and the rivets in the reserved holes of the lithium battery cover plate and the insulating plastic bracket are pressed to achieve the riveting operation. There is no need for manual holding of the lithium battery cover plate and the insulating plastic bracket for the riveting operation, solving the problem that the manual holding method is prone to cause position deviation of the lithium battery cover plate and the insulating plastic bracket, resulting in the pressure applied by the punch being easily applied to the lithium battery cover plate and the insulating plastic bracket, causing them to deform, thus affecting the assembly accuracy of the lithium battery and other components and the overall performance and reliability of the lithium battery.

[0023] 2. The present invention also works through the telescopic motor to pull the push rod to slide inward along the two slide rails. During the sliding process, the rack one is driven to slide inward, and the gear one is pushed to rotate, further driving the rotating rod to rotate. The rotating rod drives the rotating plate to rotate, and the rotating plate drives the linkage rod to move accordingly. During the rotation of the rotating plate, the gear three on its side wall rotates around the gear two. At the same time, the gear three drives the gear four to rotate in the opposite direction, so that during the movement of the linkage rod following the rotation of the rotating plate, the top surfaces of the feeding plate and the positioning block on the side wall of the linkage rod can always remain horizontal, further enabling the lithium battery cover plate and the insulating plastic bracket placed above it to be stably transported along the circular arc trajectory to the bearing plate of the riveting seat, ensuring that there is no tilting and sliding phenomenon during the transportation, and improving the stability of the feeding process.

[0024] 3. The present invention also drives the linkage rod to move forward by rotating the rotating plate until the feeding plate and the positioning block respectively fall to the bottoms of the corresponding placing grooves 1 and 2. During the forward movement of the linkage rod, the outer circumferences of the plurality of rotating cylinders on the circumferential side wall of the curved rod will gradually come into contact with the inclined surface of the positioning push block. The plurality of rotating cylinders will roll along the inclined surface of the positioning push block during the forward movement and push the positioning push block to move forward. The forward movement of the positioning push block will push the insulating plastic bracket completely into the top surface of the bearing plate. The two vertical plates on the top of the positioning push block will push the lithium battery cover plate to move synchronously with the insulating plastic bracket, achieving the effect of positioning and centering the lithium battery cover plate and the insulating plastic bracket in the front and rear directions. During the forward movement of the positioning push block, it will drive the two sliding rods to slide forward, further drive the connecting rod to move forward. The connecting rod drives the second rack to move forward. The second rack drives the fifth gear to rotate. The fifth gear drives the eighth gear to rotate through the transmission structure composed of the sixth gear, the toothed belt and the seventh gear. The eighth gear drives the third rack and the fourth rack engaged with both sides of it to move in the same direction, making the two positioning plates move towards each other and pushing the lithium battery cover plate to be centered in the moving direction of the positioning plate, achieving the effect of positioning and centering the lithium battery cover plate and the insulating plastic bracket in the left and right directions. Through the designed positioning push block and the two positioning plates, the lithium battery cover plate and the insulating plastic bracket are positioned in the four directions of front, rear, left and right, making it difficult for them to displace in the horizontal direction, improving the accuracy of positioning, further enhancing the stability of the riveting process, and avoiding the displacement of the lithium battery cover plate and the insulating plastic bracket during the riveting process, which may cause deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the overall structural schematic diagram of the present invention;

[0026] Figure 2 is the enlarged overall structural schematic diagram of the present invention;

[0027] Figure 3 is the structural schematic diagram of the lithium battery cover plate and the insulating plastic bracket of the present invention;

[0028] Figure 4 is the structural schematic diagram of the feeding assembly of the present invention;

[0029] Figure 5 is the enlarged structural schematic diagram of point A of the feeding assembly of the present invention;

[0030] Figure 6 is the structural schematic diagram of the linkage rod of the present invention;

[0031] Figure 7 is the structural schematic diagram of the riveting assembly of the present invention;

[0032] Figure 8 is the disassembled structural schematic diagram of the support block and the riveting seat of the present invention;

[0033] Figure 9 Schematic diagram of the side wall structure of the riveting seat of the present invention;

[0034] Figure 10 Schematic diagram of the bottom surface structure of the riveting seat of the present invention;

[0035] Figure 11 Enlarged schematic diagram of the structure at point B on the bottom surface of the riveting seat of the present invention;

[0036] Figure 12 Schematic diagram of the top surface structure of the clamping plate of the present invention;

[0037] Figure 13 Schematic diagram of the bottom surface structure of the clamping plate of the present invention;

[0038] Figure 14 Schematic diagram of a feeding state of the present invention;

[0039] Figure 15 Schematic diagram of a positioning state of the present invention;

[0040] Figure 16 Schematic diagram of a usage state of the present invention.

[0041] Explanation of the reference numerals in the figure:

[0042] 1. Operating table; 2. Riveting assembly; 3. Feeding assembly; 4. Fixed bracket; 5. Support block; 6. Hydraulic cylinder; 7. Punch; 8. Riveting seat; 9. Positioning assembly; 10. Clamping plate; 11. Lithium battery cover plate; 12. Insulating plastic bracket;

[0043] 301. Bottom plate; 302. Slide rail; 303. Push-pull rod; 304. First rack; 3041. Wheel rail; 305. First support plate; 306. Second support plate; 307. First gear; 308. Pulley; 309. Rotating rod; 310. Rotating plate; 311. Second gear; 312. Third gear; 313. Fourth gear; 314. Linking rod; 315. Curved rod; 316. Rotating cylinder; 317. Feeding plate; 318. Positioning block; 319. Telescopic motor;

[0044] 501. First support column; 502. Second support column; 503. Riveting column;

[0045] 701. Stamping column;

[0046] 81. Bearing plate; 82. Fixed block;

[0047] 8101. Riveting hole; 8102. First placement groove; 8103. Second placement groove; 8201. Long strip groove; 8202. Slide post;

[0048] 901, Slide bar; 902, Positioning push block; 9021, Vertical plate; 903, Connecting rod; 904, Fixed frame; 905, Spring 1; 906, Limit ring plate; 907, Gear plate; 908, Gear 5; 909, Rack 2; 910, Gear 6; 911, Tooth belt; 912, Gear 7; 913, Gear 8; 914, Rack 3; 915, Rack 4; 916, Sliding rod; 917, Track frame; 918, Positioning plate;

[0049] 1001, Slide hole; 1002, Slot hole; 1003, Spring 2; 1004, Pressing groove; 1005, Punching hole. Specific implementation mode

[0050] As Figures 1 to 16 shown, a riveting processing device for an insulating plastic bracket under a lithium battery cover plate according to the present invention includes an operation table 1, and a riveting assembly 2 and a feeding assembly 3 are arranged on the top surface of the operation table 1;

[0051] In an embodiment of the present invention, the riveting assembly 2 includes a fixed bracket 4 arranged on the top surface of the operation table 1 and two symmetrically distributed support blocks 5. A hydraulic cylinder 6 is arranged on the top of the fixed bracket 4, and a punch 7 is connected to the output end of the hydraulic cylinder 6. A riveting seat 8 is arranged above the support block 5, a positioning assembly 9 is arranged on the side wall of the riveting seat 8, and a clamping plate 10 is arranged above the riveting seat 8. The riveting seat 8 is used to place the lithium battery cover plate 11 and the insulating plastic bracket 12, and the clamping plate 10 is used to cooperate with the riveting seat 8 to clamp the lithium battery cover plate 11 and the insulating plastic bracket 12. By the operation of the hydraulic cylinder 6, the punch 7 is driven to press down, and the rivets in the reserved holes of the lithium battery cover plate 11 and the insulating plastic bracket 12 are pressed to realize the riveting operation.

[0052] In an embodiment of the present invention, as Figure 8 shown, a support column 1 501 and two support columns 2 502 are connected to the top surface of the support block 5, and a riveting column 503 is connected to the top surface of the support column 2 502. The riveting column 503 is a cylindrical structure matching the shape of the rivet, and the riveting column 503 is used to support the bottom of the rivet.

[0053] As another embodiment of the present invention, as Figure 8As shown, the riveting seat 8 is composed of a bearing plate 81 and two fixing blocks 82. The top surface of the bearing plate 81 is set to match the shape of the bottom surface of the insulating plastic bracket 12. The two fixing blocks 82 are respectively connected to the symmetric side walls of the bearing plate 81. The bottom surface of the bearing plate 81 is connected to the top surface of the support column two 502. The bearing plate 81 is provided with a riveting hole 8101 from top to bottom. The riveting post 503 is arranged in the riveting hole 8101. The top surface of the riveting post 503 is flush with the top surface of the riveting hole 8101. The top surface of the bearing plate 81 is provided with two placing grooves one 8102 corresponding to the feeding plate 317 and two placing grooves two 8103 corresponding to the positioning blocks 318. The bottom surface of the fixing block 82 is connected to the top surface of the support column one 501. The fixing block 82 is provided with a long groove 8201 from top to bottom. The top surface of the fixing block 82 is connected with a sliding post 8202.

[0054] As another embodiment of the present invention, four stamping posts 701 corresponding to the riveting posts 503 are arranged on the bottom surface of the punch 7. As Figure 7 shown, the four stamping posts 701 are arranged in the four-corner orientation. The stamping posts 701 are used to press down on the top surface of the rivet, cooperate with the supporting effect of the riveting post 503 on the bottom of the rivet, so that the rivet undergoes plastic deformation, and a riveting head that closely fits the surface of the insulating plastic bracket 12 is formed at the bottom of the rivet, so that the lithium battery cover plate 11 and the insulating plastic bracket 12 are riveted and fixed.

[0055] As another embodiment of the present invention, the feeding assembly 3 includes a bottom plate 301 and a telescopic motor 319 arranged on the top surface of the operating table 1. Two slide rails 302 are symmetrically arranged on the top surface of the bottom plate 301. A push-pull rod 303 is slidably connected to the top surface of the slide rail 302. The output end of the telescopic motor 319 is connected to the side wall of the push-pull rod 303. The telescopic motor 319 is a product of the existing technology in the example and will not be elaborated. By the telescopic movement of the output end of the telescopic motor 319, the push-pull rod 303 is driven to make a reciprocating sliding movement on the two slide rails 302.

[0056] As another embodiment of the present invention, identical structural components are symmetrically arranged on the upper parts at both ends of the push rod 303. A first rack 304 is connected to the top surface at one end, and a wheel rail 3041 is arranged on the top surface of the first rack 304. A first support plate 305 is connected to the end of the slide rail 302. A second support plate 306 connected to the top surface of the bottom plate 301 is arranged on the side of the first support plate 305. A first gear 307 meshing with the first rack 304 and a pulley 308 slidingly connected to the top surface of the wheel rail 3041 are rotatably connected to the side wall of the first support plate 305. A rotating rod 309 is connected to the side wall of the first gear 307. The rotating rod 309 penetrates through the side walls of the first support plate 305 and the second support plate 306. A rotating plate 310 connected to the circumferential side wall of the rotating rod 309 is arranged between the first support plate 305 and the second support plate 306. A second gear 311 is fixedly connected to the side wall of the second support plate 306. A circular hole is formed in the side wall of the second gear 311. The rotating rod 309 is in clearance fit with the second gear 311 through the circular hole. A third gear 312 is rotatably connected to the side wall of the rotating plate 310. The third gear 312 is meshingly connected with the second gear 311. A linkage rod 314 is rotatably connected to the side wall of the rotating plate 310; there are two linkage rods 314. A fourth gear 313 meshing with the output end of the third gear 312 is fixedly connected to the circumferential outer wall of the linkage rod 314. The two linkage rods 314 are connected by a curved rod 315. Feeding plates 317 and positioning blocks 318 with the same structure are connected to the circumferential side walls of the two linkage rods 314. A plurality of rotating cylinders 316 are rotatably connected to the circumferential side wall of the curved rod 315; the feeding plate 317 is a long strip-shaped plate structure. The top surface of the positioning block 318 is set to a curved surface shape matching the bottom structure of the insulating plastic bracket 12. In the present invention, when the telescopic motor 319 works, the push rod 303 is pulled to slide inward along the two slide rails 302. During the sliding process, the first rack 304 is driven to slide inward, and the first gear 307 is pushed to rotate, further driving the rotating rod 309 to rotate. The rotating rod 309 drives the rotating plate 310 to rotate. The rotating plate 310 drives the linkage rod 314 to rotate accordingly. During the rotation of the rotating plate 310, the third gear 312 on its side wall rotates around the second gear 311. At the same time, the third gear 312 drives the fourth gear 313 to rotate in the opposite direction. When the linkage rod 314 moves following the rotation of the rotating plate 310, the feeding plate 317 and the top surface of the positioning block 318 on the side wall of the linkage rod 314 can always maintain a horizontal state, further enabling the lithium battery cover plate 11 and the insulating plastic bracket 12 placed above them to be stably transported along the circular arc track to the bearing plate 81 of the riveting seat 8. When the bottom of the insulating plastic bracket 12 gradually slides into the bearing plate 81, the feeding plate 317 will gradually drop along the entrance of the first placement groove 8102, and the positioning block 318 will gradually drop along the entrance of the second placement groove 8103, so that the bottom of the insulating plastic bracket 12 completely contacts the top surface of the bearing plate 81.

[0057] As another embodiment of the present invention, the feeding assembly 3 is linked and cooperated with the positioning assembly 9. When the feeding assembly 3 feeds the lithium battery cover plate 11 and the insulating plastic bracket 12 onto the riveting seat 8, it synchronously drives the positioning assembly 9 to position the lithium battery cover plate 11 and the insulating plastic bracket 12, ensuring the accurate position of the lithium battery cover plate 11 and the insulating plastic bracket 12 during the riveting process, and clamping and supporting the lithium battery cover plate 11 and the insulating plastic bracket 12 through the clamping plate 10 and the riveting seat 8, to prevent the lithium battery cover plate 11 and the insulating plastic bracket 12 from bending and twisting during the riveting process.

[0058] As another embodiment of the present invention, the positioning assembly 9 includes two slide rods 901 penetrating through the side wall of the bearing plate 81. At the ends of the two slide rods 901, there is a positioning push block 902 connected. The other ends of the two slide rods 901 are connected by a connecting rod 903. Two fixing frames 904 corresponding to the slide rods 901 are connected to the side wall of the bearing plate 81. The rod bodies of the slide rods 901 penetrate through the side walls of the fixing frames 904. Inside the space of the fixing frames 904, there is a first spring 905 sleeved on the circumferential outer wall of the slide rods 901. On the circumferential outer wall of the slide rods 901, there is a limit ring plate 906. One end of the first spring 905 is connected to the side wall of the limit ring plate 906, and the other end is connected to the inner side wall of the fixing frame 904. On the top surface of the positioning push block 902, there are two vertical plates 9021 connected. The side wall of the positioning push block 902 is set as a combined structure of an inclined surface and a vertical surface corresponding to the rotating cylinder 316. On the top surface of the positioning push block 902, there is a groove, which is used to prevent the movement of the lithium battery cover plate 11 and the insulating plastic bracket 12 from being blocked during the feeding process; in the present invention, when the bottom of the insulating plastic bracket 12 completely contacts the top surface of the bearing plate 81, the rotating plate 310 still continues to rotate, driving the linkage rod 314 to move forward until the feeding plate 317 and the positioning block 318 respectively fall to the bottoms of the corresponding placement grooves 8102 and 8103. During the forward movement of the linkage rod 314, the circumferential outer walls of the multiple rotating cylinders 316 on the circumferential side wall of the curved rod 315 will gradually contact the inclined surface of the positioning push block 902. The multiple rotating cylinders 316 roll along the inclined surface of the positioning push block 902 during the forward movement and push the positioning push block 902 to move forward. The forward movement of the positioning push block 902 will push the insulating plastic bracket 12 to completely enter the top surface of the bearing plate 81. The two vertical plates 9021 at the top of the positioning push block 902 will push the lithium battery cover plate 11 to move synchronously with the insulating plastic bracket 12, positioning the lithium battery cover plate 11 and the insulating plastic bracket 12 in the center.

[0059] As another embodiment of the present invention, a gear plate 907 is further connected to the side wall of the bearing plate 81. A fifth gear 908 is rotatably connected to the bottom surface of the gear plate 907. A second rack 909 meshing with the output end of the fifth gear 908 is connected to the circumferential side wall of the connecting rod 903. The fifth gear 908 is coaxially connected to a sixth gear 910. The output end of the sixth gear 910 is drivingly connected to a seventh gear 912 through a toothed belt 911. The seventh gear 912 is coaxially connected to an eighth gear 913 rotatably connected to the bottom surface of the bearing plate 81. The third rack 914 and the fourth rack 915 are respectively meshed on both symmetric sides of the eighth gear 913; one end of the third rack 914 is connected to a sliding rod 916. The bottom surface of the sliding rod 916 is slidably connected to a track frame 917 fixedly connected to the bottom surface of the bearing plate 81. The other end of the sliding rod 916 is connected to a positioning plate 918 penetrating through the long slot 8201 on the top surface. The plate body of the positioning plate 918 is movably matched with the long slot 8201. The top surface of the positioning plate 918 is a flat plate-like structure; in the process of the positioning push block 902 moving forward in the present invention, it will drive the two sliding rods 901 to slide forward, further drive the connecting rod 903 to move forward, the connecting rod 903 drives the second rack 909 to move forward, the second rack 909 drives the fifth gear 908 to rotate, and the fifth gear 908 drives the eighth gear 913 to rotate through a transmission structure composed of the sixth gear 910, the toothed belt 911 and the seventh gear 912. The eighth gear 913 drives the third rack 914 and the fourth rack 915 meshed on both of its sides to move in the same direction, so that the two positioning plates 918 move towards each other, and push the lithium battery cover plate 11 to be centered in the moving direction of the positioning plate 918, and position and center the other two sides of the lithium battery cover plate 11 and the insulating plastic bracket 12. Through the positioning push block 902 and the two positioning plates 918, the lithium battery cover plate 11 and the insulating plastic bracket 12 are firmly positioned and are difficult to displace in the horizontal direction.

[0060] A riveting process for an insulating plastic bracket under a lithium battery cover plate includes the following steps:

[0061] S1. Feeding operation: Place the insulating plastic bracket 12 on the top surfaces of the feeding plate 317 and the positioning block 318, and align the bottom surface of the insulating plastic bracket 12 with the positioning block 318. Then place the lithium battery cover plate 11 on the top surface of the insulating plastic bracket 12 and align them, and place the rivets in the reserved holes of the lithium battery cover plate 11 and the insulating plastic bracket 12;

[0062] S2. Feeding operation. By the operation of the telescopic motor 319, the push-pull rod 303 is pulled to slide inward along the two slide rails 302. During the sliding process, the first rack 304 is driven to slide inward, and the first gear 307 is pushed to rotate. Further, the rotating rod 309 is driven to rotate. The rotating rod 309 drives the rotating plate 310 to rotate. The rotating plate 310 drives the linkage rod 314 to rotate accordingly. During the rotation of the rotating plate 310, the third gear 312 on its side wall rotates around the second gear 311. Since the second gear 311 is fixedly connected to the side wall of the second support plate 306, the second gear 311 does not rotate. The third gear 312 drives the fourth gear 313 to rotate. The fourth gear 313 drives the linkage rod 314 to rotate self. The rotation direction of the linkage rod 314 rotating self is opposite to the rotation direction of the linkage rod 314 driven by the rotating plate 310, so that the circumferential outer wall of the linkage rod 314 is in the same direction as its initial state, thereby enabling the top surfaces of the feeding plate 317 and the positioning block 318 on the side wall of the linkage rod 314 to always maintain a horizontal state. Further, the lithium battery cover plate 11 and the insulating plastic bracket 12 placed above it can be more stably transported along the circular arc track to the bearing plate 81 of the riveting seat 8. When the bottom of the insulating plastic bracket 12 gradually slides into the bearing plate 81, the feeding plate 317 will gradually drop along the entrance of the first placement groove 8102, and the positioning block 318 will gradually drop along the entrance of the second placement groove 8103, so that the bottom of the insulating plastic bracket 12 is in full contact with the top surface of the bearing plate 81;

[0063] S3. Positioning operation: When the bottom of the insulating plastic bracket 12 is in full contact with the top surface of the carrier plate 81, the rotating plate 310 still continues to rotate, driving the linkage rod 314 to move forward until the feeding plate 317 and the positioning block 318 respectively fall into the bottoms of the corresponding placement grooves 8102 and 8103. During the forward movement of the linkage rod 314, the outer circumferences of the plurality of rotating cylinders 316 on the circumferential side wall of the curved rod 315 will gradually come into contact with the inclined surface of the positioning push block 902. The plurality of rotating cylinders 316 roll along the inclined surface of the positioning push block 902 during the forward movement and push the positioning push block 902 to move forward. The forward movement of the positioning push block 902 will push the insulating plastic bracket 12 completely onto the top surface of the carrier plate 81. The two vertical plates 9021 at the top of the positioning push block 902 will push the lithium battery cover plate 11 to move synchronously with the insulating plastic bracket 12, positioning and centering the lithium battery cover plate 11 and the insulating plastic bracket 12. During the forward movement of the positioning push block 902, it will drive the two sliding rods 901 to slide forward, further driving the connecting rod 903 to move forward. The connecting rod 903 drives the second rack 909 to move forward. The second rack 909 drives the fifth gear 908 to rotate. The fifth gear 908 drives the eighth gear 913 to rotate through the transmission structure composed of the sixth gear 910, the toothed belt 911 and the seventh gear 912. The eighth gear 913 drives the third rack 914 and the fourth rack 915 engaged with both sides of it to move in the same direction, causing the two positioning plates 918 to move towards each other, pushing the lithium battery cover plate 11 to be centered in the moving direction of the positioning plates 918, and positioning and centering the other two sides of the lithium battery cover plate 11 and the insulating plastic bracket 12. Through the positioning push block 902 and the two positioning plates 918, the lithium battery cover plate 11 and the insulating plastic bracket 12 are firmly positioned and are difficult to displace horizontally;

[0064] S4. Riveting operation: After completing the positioning operation of the lithium battery cover plate 11 and the insulating plastic bracket 12, the hydraulic cylinder 6 works to push the punch 7 downward. During the downward movement of the punch 7, the clamping plate 10 is driven to press on the top surface of the riveting seat 8. At this time, the clamping plate 10 and the riveting seat 8 form an upper and lower clamping effect on the lithium battery cover plate 11 and the insulating plastic bracket 12. The punching column 701 on the bottom surface of the punch 7 presses downward on the rivet through the punching hole 1005, and cooperates with the supporting effect of the riveting column 503 on the bottom of the rivet, causing the rivet to be plastically deformed by the force, and completing the riveting operation of the lithium battery cover plate 11 and the insulating plastic bracket 12;

[0065] S5. Unloading operation: After completing the riveting operation, the telescopic motor 319 reversely pushes the push-pull rod 303 to move outward along the two slide rails 302, so that the feeding plate 317 and the positioning block 318 take the riveted lithium battery cover plate 11 and the insulating plastic bracket 12 out of the riveting seat 8, and the finished product is taken out.

[0066] The embodiments disclosed in the present invention are preferred embodiments, but not limited thereto. Those of ordinary skill in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not depart from the spirit of the present invention, they are within the protection scope of the present invention.

Claims

1. A riveting processing equipment for insulating plastic bracket under lithium battery cover, characterized in that: It comprises an operating table (1), wherein a riveting assembly (2) and a feeding assembly (3) are arranged on the top surface of the operating table (1); The riveting assembly (2) comprises a fixed bracket (4) arranged on the top surface of the operating table (1) and two symmetrically distributed support blocks (5); a hydraulic cylinder (6) is arranged on the top of the fixed bracket (4); an output end of the hydraulic cylinder (6) is connected to a punch (7); a riveting seat (8) is arranged above the support block (5); a positioning assembly (9) is arranged on the side wall of the riveting seat (8); and a clamping plate (10) is arranged above the riveting seat (8); The feeding assembly (3) comprises a bottom plate (301) and a telescopic motor (319) arranged on the top surface of the operating table (1); two slide rails (302) are symmetrically arranged on the top surface of the bottom plate (301); a push-pull rod (303) is slidably connected to the top surface of the slide rail (302); and an output end of the telescopic motor (319) is connected to a side wall of the push-pull rod (303); The same structural components are symmetrically arranged at the upper parts of both ends of the push-pull rod (303), wherein the top surface of one end is connected to a rack 1 (304), the top surface of the rack 1 (304) is provided with a wheel track (3041), the end of the slide rail (302) is connected to a support plate 1 (305), and a support plate 2 (306) connected to the top surface of the bottom plate (301) is arranged on the side of the support plate 1 (305), and the side wall of the support plate 1 (305) is rotatably connected to a gear 1 (307) meshing with the rack 1 (304) and a pulley (308) slidably connected to the top surface of the wheel track (3041), and the side wall of the gear 1 (307) is connected to a rotating rod (309), and the rotating rod (309) passes through the side walls of the support plate 1 (305) and the support plate 2 (306), and the support plate 1 (305) is connected to the side wall of the support plate 2 (306). A rotating plate (310) connected to the circumferential side wall of the rotating rod (309) is arranged between the support plate (305) and the second support plate (306); a second gear (311) is fixedly connected to the side wall of the second support plate (306); a circular hole is provided on the side wall of the second gear (311); the rotating rod (309) is clearance-matched with the second gear (311) by penetrating the circular hole; a third gear (312) is rotatably connected to the side wall of the rotating plate (310); the third gear (312) is meshingly connected to the second gear (311); a linkage rod (314) is rotatably connected to the side wall of the rotating plate (310); there are two linkage rods (314); the two linkage rods (314) are connected by a curved rod (315); and a plurality of rotating cylinders (316) are rotatably connected to the circumferential side wall of the curved rod (315); The rivet seat (8) is composed of a bearing plate (81) and two fixing blocks (82), the two fixing blocks (82) are respectively connected to two symmetrical side walls of the bearing plate (81), and the fixing blocks (82) are provided with a long groove (8201) from top to bottom; The positioning assembly (9) comprises two slide bars (901) penetrating the side wall of the carrier plate (81), the ends of the two slide bars (901) being connected to positioning push blocks (902), the other ends of the two slide bars (901) being connected via a connecting rod (903), the side wall of the carrier plate (81) being further connected to a gear plate (907), the bottom surface of the gear plate (907) being rotatably connected to a gear five (908), the circumferential side wall of the connecting rod (903) being connected to a rack two (909) meshing with an output end of the gear five (908), the gear five (908) being coaxially connected to a gear six (910), the output end of the gear six (910) being transmission-connected to a gear seven (912) via a toothed belt (911), the gear seven (912) being coaxially connected to a gear rotatably connected to the bottom surface of the carrier plate (81). Gear eight (913), the gear eight (913) is symmetrically meshed with rack three (914) and rack four (915) on both sides; one end of the rack three (914) is connected to a sliding rod (916), the bottom surface of the sliding rod (916) is slidably connected to a track frame (917) fixedly connected to the bottom surface of the bearing plate (81), the other end of the sliding rod (916) is connected to a positioning plate (918) that passes through the long groove (8201), the plate body of the positioning plate (918) is movably matched with the long groove (8201), and the top surface of the positioning plate (918) is a flat plate structure; the top surface of the positioning push block (902) is connected to two vertical plates (9021), and the side wall of the positioning push block (902) is arranged as a combination structure of an inclined surface and a vertical surface corresponding to the rotating cylinder (316); The feeding component (3) cooperates with the positioning component (9). When the feeding component (3) feeds the lithium battery cover plate (11) and the insulating plastic bracket (12) onto the riveting seat (8), the positioning component (9) is simultaneously driven to position the lithium battery cover plate (11) and the insulating plastic bracket (12), thereby ensuring that the positions of the lithium battery cover plate (11) and the insulating plastic bracket (12) are accurate during the riveting process. The lithium battery cover plate (11) and the insulating plastic bracket (12) are clamped and supported by the clamping plate (10) and the riveting seat (8), thereby preventing the lithium battery cover plate (11) and the insulating plastic bracket (12) from bending and twisting during the riveting process.

2. The riveting processing equipment for insulating plastic bracket under lithium battery cover according to claim 1 is characterized in that: The outer circumferential wall of the linkage rod (314) is fixedly connected with a gear four (313) meshingly connected with the output end of the gear three (312), and the circumferential side walls of the two linkage rods (314) are connected with a feeding plate (317) and a positioning block (318) of the same structure; The feeding plate (317) is a long strip-shaped plate-shaped structure, and the top surface of the positioning block (318) is configured to have a curved surface shape that matches the bottom surface structure of the insulating plastic bracket (12).

3. The riveting processing equipment for insulating plastic bracket under lithium battery cover according to claim 2 is characterized in that: The top surface of the support block (5) is connected to a support column 1 (501) and two support columns 2 (502); the top surface of the support column 2 (502) is connected to a rivet column (503); the rivet column (503) is a cylindrical structure matching the shape of a rivet; the rivet column (503) is used to support the bottom of the rivet.

4. The riveting processing equipment for insulating plastic bracket under lithium battery cover according to claim 3 is characterized in that: The bottom surface of the bearing plate (81) is connected to the top surface of the second support column (502); the bearing plate (81) is provided with a rivet hole (8101) from top to bottom; the rivet column (503) is arranged in the rivet hole (8101); the top surface of the rivet column (503) is flush with the top surface of the rivet hole (8101); the top surface of the bearing plate (81) is provided with a plurality of placement grooves 1 (8102) corresponding to the feeding plate (317) and a plurality of placement grooves 2 (8103) corresponding to the positioning block (318); The bottom surface of the fixing block (82) is connected to the top surface of the first supporting column (501), and the top surface of the fixing block (82) is connected to a sliding column (8202).

5. The riveting processing equipment for insulating plastic bracket under lithium battery cover according to claim 4 is characterized in that: The bottom surface of the punch (7) is provided with a plurality of punching columns (701) corresponding to the rivet columns (503), wherein there are four punching columns (701) arranged at four corners, and the punching columns (701) are used to press down on the top surface of the rivet, and cooperate with the supporting effect of the rivet column (503) on the bottom of the rivet to cause the rivet to undergo plastic deformation, so that a rivet head is formed at the bottom of the rivet that is tightly fitted with the surface of the insulating plastic bracket (12), so that the lithium battery cover plate (11) and the insulating plastic bracket (12) are riveted and fixed.

6. The riveting processing equipment for insulating plastic bracket under lithium battery cover according to claim 5, characterized in that: The side wall of the bearing plate (81) is connected to two fixed frames (904) corresponding to the sliding rod (901); the rod body of the sliding rod (901) passes through the side wall of the fixed frame (904); a spring 1 (905) sleeved on the circumferential outer wall of the sliding rod (901) is arranged in the internal space of the fixed frame (904); a limit ring plate (906) is arranged on the circumferential outer wall of the sliding rod (901); one end of the spring 1 (905) is connected to the side wall of the limit ring plate (906), and the other end is connected to the inner wall of the fixed frame (904).

7. The riveting processing equipment for insulating plastic bracket under lithium battery cover according to claim 6, characterized in that: The top surface of the positioning push block (902) is provided with a groove, and the groove is used to prevent the movement of the lithium battery cover plate (11) and the insulating plastic bracket (12) from being hindered during the feeding process.

8. The riveting processing equipment for insulating plastic bracket under lithium battery cover according to claim 7, characterized in that: The clamping plate (10) is provided with a sliding hole (1001) matching the sliding column (8202) and a slot (1002) whose shape is adapted to the positioning plate (918) from top to bottom. The clamping plate (10) is slidably connected to the sliding column (8202) through the sliding hole (1001). The top surface of the clamping plate (10) is connected with a plurality of springs (1003) sleeved on the circumferential side wall of the sliding column (8202). The top surface of the springs (1003) is connected to the bottom surface of the punch (7). The sliding column (8202) passes through the bottom surface of the punch (7) and slidably cooperates with the punch (7). The bottom surface of the clamping plate (10) is provided with a pressing groove (1004) whose shape is adapted to the fixing block (82). The clamping plate (10) is provided with a plurality of punching holes (1005) corresponding to the punching column (701) from top to bottom.

9. A riveting process for insulating plastic bracket under lithium battery cover, characterized in that: The process is implemented based on the riveting processing equipment according to claim 8, and the riveting process includes the following steps: S1, discharging operation, placing the insulating plastic bracket (12) on the top surface of the feeding plate (317) and the positioning block (318), and aligning the bottom surface of the insulating plastic bracket (12) with the positioning block (318), then placing the lithium battery cover plate (11) on the top surface of the insulating plastic bracket (12) and aligning them, and placing the rivets in the reserved holes of the lithium battery cover plate (11) and the insulating plastic bracket (12); S2, feeding operation, through the telescopic motor (319), pull the push-pull rod (303) to slide inward along the two slide rails (302), and drive the rack 1 (304) to slide inward during the sliding process, and push the gear 1 (307) to rotate, further driving the rotating rod (309) to rotate, the rotating rod (309) drives the rotating plate (310) to rotate, and the rotating plate (310) drives the linkage rod (314) to rotate accordingly. During the rotation of the rotating plate (310), the gear 3 (312) on its side wall rotates around the gear 2 (311). Since the gear 2 (311) is fixedly connected to the side wall of the supporting plate 2 (306), the gear 2 (311) does not rotate, and the gear 3 (312) drives the gear 4 (313) to rotate, and the gear 4 (313) drives the linkage rod (314) to rotate. The direction of the linkage rod (314) rotating is The rotation direction of the linkage rod (314) is opposite to the direction in which the rotating plate (310) drives the linkage rod (314) to rotate, so that the circumferential outer wall of the linkage rod (314) is consistent with the direction of its initial state, so that the top surfaces of the feeding plate (317) and the positioning block (318) on the side wall of the linkage rod (314) can always remain in a horizontal state, and further the lithium battery cover plate (11) and the insulating plastic bracket (12) placed thereon can be relatively stably transferred along an arc-shaped trajectory to the supporting plate (81) of the rivet seat (8). When the bottom of the insulating plastic bracket (12) gradually slides into the supporting plate (81), the feeding plate (317) gradually falls along the entrance of the placement groove (8102), and the positioning block (318) gradually falls along the entrance of the placement groove (8103), so that the bottom of the insulating plastic bracket (12) is completely in contact with the top surface of the supporting plate (81); S3, positioning operation, when the bottom of the insulating plastic bracket (12) is completely in contact with the top surface of the carrier plate (81), the rotating plate (310) continues to rotate, driving the linkage rod (314) to move forward until the feeding plate (317) and the positioning block (318) fall into the bottom of the corresponding placement groove 1 (8102) and placement groove 2 (8103) respectively. During the process of the linkage rod (314) moving forward, the circumferential outer walls of the plurality of rotating cylinders (316) on the circumferential side wall of the curved rod (315) gradually contact the positioning plate (81). On the inclined surface of the push block (902), the plurality of rotating cylinders (316) roll along the inclined surface of the positioning push block (902) during the process of advancing and push the positioning push block (902) to move forward. The positioning push block (902) moves forward to push the insulating plastic bracket (12) completely into the top surface of the carrier plate (81). The two vertical plates (9021) on the top of the positioning push block (902) push the lithium battery cover plate (11) to move synchronously with the insulating plastic bracket (12), thereby ensuring the stability of the lithium battery cover plate (11) and the insulating plastic bracket (12). 2) Positioning and centering, when the positioning push block (902) moves forward, it drives the two slide bars (901) to slide forward, further drives the connecting rod (903) to move forward, the connecting rod (903) drives the rack 2 (909) to move forward, the rack 2 (909) drives the gear 5 (908) to rotate, the gear 5 (908) drives the gear 8 (913) to rotate through the transmission structure composed of the gear 6 (910), the toothed belt (911) and the gear 7 (912), and the gear 8 (913) drives The meshing racks 3 (914) and 4 (915) on both sides thereof move in the same direction, so that the two positioning plates (918) move towards each other, pushing the lithium battery cover plate (11) to be centered in the direction of movement of the positioning plates (918), and positioning and centered the other two sides of the lithium battery cover plate (11) and the insulating plastic bracket (12). The positioning push block (902) and the two positioning plates (918) ensure that the lithium battery cover plate (11) and the insulating plastic bracket (12) are firmly positioned and are unlikely to be displaced in the horizontal direction. S4, riveting operation, after completing the positioning operation of the lithium battery cover plate (11) and the insulating plastic bracket (12), the hydraulic cylinder (6) works to push the punch (7) downward, and the process of the punch (7) pressing down drives the clamping plate (10) to press down on the top surface of the rivet seat (8). At this time, the clamping plate (10) and the rivet seat (8) form a clamping effect on the lithium battery cover plate (11) and the insulating plastic bracket (12). The punching column (701) on the bottom surface of the punch (7) presses down on the rivet through the punching hole (1005), and cooperates with the rivet column (503) to support the bottom of the rivet, so that the rivet is subjected to force and plastic deformation occurs, completing the riveting operation of the lithium battery cover plate (11) and the insulating plastic bracket (12); S5, unloading operation. After the riveting operation is completed, the push-pull rod (303) is pushed in the opposite direction by the telescopic motor (319) to move outward along the two slide rails (302), so that the feeding plate (317) and the positioning block (318) bring the riveted lithium battery cover plate (11) and the insulating plastic bracket (12) away from the riveting seat (8) to take out the finished product.

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