Full-automatic welding machine for explosion-proof piece of lithium battery

Abstract

The invention discloses a full-automatic welding machine for a lithium battery anti-explosion piece. The full-automatic welding machine comprises a top cover feeding device, a laser welding device arranged at one end of the top cover feeding device and a welding bead detection device arranged at one end of the laser welding device. The top cover feeding device comprises a top cover conveying mechanism, a top cover stock bin mechanism arranged on one side of the top cover conveying mechanism, a top cover transferring mechanism arranged at one end of the top cover conveying mechanism, a laser marking mechanism and a defective product transferring mechanism, wherein the laser marking mechanism and the defective product transferring mechanism are arranged on the other side of the top cover conveying mechanism. A first visual inspection mechanism and a second visual inspection mechanism are further arranged between the top cover conveying mechanism and the top cover stock bin mechanism. A series of procedures such as automatic feeding, assembling and welding of the battery top cover and the anti-explosion piece, weld bead detecting and cleaning, shaping and discharging can be achieved, the automation degree is high, and the working efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of automation technology, and in particular to a fully automatic welding machine for lithium battery explosion-proof sheets. Background Technology

[0002] In the production process of lithium batteries, explosion-proof sheets need to be welded into the corresponding holes in the top cover of the battery. For small and medium-sized enterprises, manual operation or simple fixed welding equipment is often used. However, manual welding is inefficient and the welding quality is greatly affected by human factors, making it difficult to ensure consistency. Simple fixed welding equipment lacks flexibility, cannot adapt to batteries of different sizes and shapes, and has low versatility. Therefore, it needs to be improved. Summary of the Invention

[0003] The purpose of this invention is to provide a fully automatic welding machine for lithium battery explosion-proof sheets, which can realize a series of processes such as automated feeding, assembly, welding, weld inspection and cleaning, shaping, and unloading of battery top covers and explosion-proof sheets, with a high degree of automation and high work efficiency.

[0004] To achieve the above objectives, the following technical solution is adopted: A fully automatic welding machine for lithium battery explosion-proof sheets includes a top cover feeding device, a laser welding device arranged at one end of the top cover feeding device, and a weld inspection device arranged at one end of the laser welding device. The top cover feeding device includes a top cover conveying mechanism, a top cover hopper mechanism arranged on one side of the top cover conveying mechanism, a top cover transfer mechanism arranged at one end of the top cover conveying mechanism, and a laser marking mechanism and a defective product transfer mechanism arranged on the other side of the top cover conveying mechanism. A first vision inspection mechanism and a second vision inspection mechanism are also arranged between the top cover conveying mechanism and the top cover hopper mechanism. The laser marking mechanism is located between the first vision inspection mechanism and the second vision inspection mechanism, and a top cover lifting mechanism is also arranged below the top cover conveying mechanism and corresponding to the laser marking mechanism. The defective product transfer mechanism is arranged near the other end of the top cover conveying mechanism, and a defective product hopper is also arranged on one side of the defective product transfer mechanism. A feeding and flipping mechanism is also arranged at the other end of the top cover conveying mechanism.

[0005] Furthermore, the feeding and tilting mechanism includes two feeding uprights arranged opposite to each other, and a tilting and lifting cylinder is installed on one side of each feeding upright; each tilting and lifting cylinder drives and connects to a tilting vertical plate, and a tilting rod is rotatably connected between the two tilting vertical plates; a tilting transfer plate is connected to the tilting rod, and a tilting suction cup is also installed on the tilting transfer plate; a tilting drive mechanism connected to the tilting rod is also installed on one of the tilting vertical plates; the tilting drive mechanism includes a tilting motor installed on the tilting vertical plate, a first driving wheel connected to the output shaft of the tilting motor, a first driven wheel installed on the tilting rod, and a first synchronous belt wound between the first driving wheel and the first driven wheel.

[0006] Furthermore, the laser welding device includes a welding transmission device, a laser welding mechanism arranged on one side of the welding transmission device, a welding lifting mechanism arranged below the welding transmission device, and a welding unloading mechanism arranged at one end of the welding transmission device; a third vision inspection mechanism is also arranged on one side of the welding transmission device, and a welding loading mechanism is also arranged on the other side of the welding transmission device.

[0007] Furthermore, the welding loading mechanism includes a transfer loading mechanism, a first hopper mechanism arranged at one end of the transfer loading mechanism, and a loading and transfer mechanism arranged on one side of the transfer loading mechanism; the first hopper mechanism includes a hopper mounting frame, a tray plate slidably connected to the top of the hopper mounting frame, and a first bearing box installed on the top of the tray plate; the top of the first bearing box is provided with a first bearing groove for bearing explosion-proof sheets; one end of the tray plate is connected to a first panel, and one side of the first panel is provided with a first handle; a first positioning cylinder is installed vertically at the bottom of the hopper mounting frame away from the first panel, and the first positioning cylinder is also driven by a first positioning rod; a positioning insertion hole is also provided at the top of the tray plate corresponding to the first positioning rod; a first stop block is also connected at the top of the hopper mounting frame away from the first panel, and a first limit block is also connected at the bottom of the tray plate away from the first panel corresponding to the first stop block.

[0008] Furthermore, the loading and transfer mechanism includes a transfer fixing frame arranged on one side of the central transfer mechanism, and a double-acting linear module mounted on the transfer fixing frame; the double-acting linear module is arranged along the length direction of the central transfer mechanism, and the two actuators of the double-acting linear module are respectively connected to a loading and transfer module; the loading and transfer module includes a transfer sliding frame connected to the double-acting linear module, a transfer linear module mounted on the transfer sliding frame perpendicular to the length direction of the double-acting linear module, and a first Z-axis lifting module connected to the second linear module; the first Z-axis lifting module is also driven and connected to a Z-axis lifting vertical plate, and the bottom of the Z-axis lifting vertical plate is also connected to a Z-axis lifting horizontal plate; the Z-axis A loading and transfer assembly is also installed on the lifting horizontal plate; the loading and transfer assembly includes an R-axis rotary motor installed vertically on the Z-axis lifting horizontal plate, and the two ends of the motor shaft of the R-axis rotary motor pass through the top and bottom of the R-axis rotary motor respectively; the motor shaft of the R-axis rotary motor has an axially hollow structure, and a first transfer suction cup is installed at the bottom of the motor shaft, and a transfer air source connector is installed at the top of the motor shaft; a rotating disk is also installed on the upper part of the motor shaft of the R-axis rotary motor, and an R-axis sensing plate is connected to the top of the rotating disk; a sensing fixing plate is also connected to one side of the Z-axis lifting vertical plate, and a U-shaped photoelectric sensor that works in conjunction with the R-axis sensing plate is installed at the bottom of the sensing fixing plate.

[0009] Furthermore, a top-leveling positioning mechanism is also arranged above the welding transfer device corresponding to the welding lifting mechanism; the laser welding mechanism includes a welding fixing frame arranged on one side of the welding transfer device, a welding X-axis translation mechanism arranged on top of the welding fixing frame along the transmission direction of the welding transfer device, a welding Y-axis translation mechanism connected to the welding X-axis translation mechanism, a welding translation frame connected to the welding Y-axis translation mechanism, and a welding Z-axis lifting mechanism installed at one end of the welding translation frame; the welding Z-axis lifting mechanism is also driven and connected to a welding lifting plate, and a laser welding head is also installed on one side of the welding lifting plate; the output end of the laser welding head is also fitted with a first dust extraction hood, and a first dust extraction pipe is also installed on the first dust extraction hood; a dust extraction adapter pipe connected to the first dust extraction pipe is also installed on one side of the welding translation frame; two first protective covers are also connected to the top of the welding transfer device, the two first protective covers are arranged opposite each other, and the top-leveling positioning mechanism is located between the two first protective covers.

[0010] Furthermore, the welding transfer device includes two welding transfer frames arranged in parallel and spaced apart, with a conveyor belt mechanism installed on each opposite side of the two welding transfer frames; the welding lifting mechanism includes a lifting base plate, a first lifting cylinder mounted on the top of the lifting base plate, a first lifting plate connected to the first lifting cylinder, a first support column connected to the middle of the top of the first lifting plate, and a second lifting plate arranged perpendicular to the length direction of the first lifting plate and connected to the first support column; a first clamping mechanism is installed on the first lifting plate along its length direction, and the first clamping mechanism also drives two first sliding plates; a first clamping plate is connected vertically to the top of each first sliding plate, and a first clamping block is also connected to the top of the first clamping plate; a second clamping block is installed on the second lifting plate along its length direction. The mechanism includes a clamping mechanism and a second clamping mechanism that drives and connects two second sliding plates; each second sliding plate has a second clamping plate connected to its top in the vertical direction; the second lifting plate is also connected to an adsorption mounting plate, which is located between the two second sliding plates; the top of the adsorption mounting plate is also equipped with a third Z-axis cylinder, which drives and connects to a first adsorption seat; the top of the first adsorption seat is also equipped with a first vacuum suction cup; each side of the welding transfer frame is provided with a first bracket; the top-flat positioning mechanism includes a top-flat connecting plate connected between the tops of the two first brackets, and a top-flat pressure plate connected to the bottom of the top-flat connecting plate; the top of the top-flat pressure plate has a contoured card hole; each end of the top-flat pressure plate has a first guide block, and each side of the top-flat pressure plate has a second guide block.

[0011] Furthermore, the weld inspection device includes a first transmission device, a weld cleaning device arranged on one side of the first transmission device, a fourth vision inspection mechanism arranged on the other side of the first transmission device, and a pressing and shaping device arranged at one end of the first transmission device; a sorting and unloading device is also arranged on one side of the first transmission device near the pressing and shaping device; the pressing and shaping device includes a shaping fixing frame, a shaping platform installed in the shaping fixing frame, a shaping transport mechanism installed on one side of the shaping fixing frame, and a shaping pressing mechanism installed on the top of the shaping fixing frame and above the shaping platform; a shaping fixture for carrying the product is also installed on the shaping platform.

[0012] Furthermore, the shaping and transporting mechanism includes a shaping Z-axis lifting mechanism connected to one side of the shaping fixed frame, a shaping X-axis translation mechanism connected to the shaping Z-axis lifting mechanism, and a shaping translation frame connected to the shaping X-axis translation mechanism; a shaping transporting module is connected to each end of one side of the shaping translation frame; the shaping transporting module includes a shaping connecting seat connected to one side of the shaping translation frame, and a shaping transporting rod is connected to each end of the bottom of the shaping connecting seat; a plurality of first suction nozzles are installed at intervals along the length of the bottom of the shaping transporting rod, and a shaping air source connector communicating with the first suction nozzles is also installed on the top of the shaping transporting rod; the shaping fixed frame includes a shaping base plate; a shaping vertical plate is connected to each end of the top of the shaping base plate, and a shaping horizontal plate is connected between the tops of the two shaping vertical plates; the shaping Z-axis lifting mechanism is installed on one side of one of the shaping vertical plates, the shaping platform is arranged on the shaping base plate, and the shaping pressing mechanism is installed on the shaping horizontal plate; the shaping pressing mechanism includes a mounting plate... A shaping pressing electric cylinder is mounted on the shaping horizontal plate, and a pressing fixing plate is connected to the shaping pressing electric cylinder and located above the shaping platform; an upper adjusting block is connected to each of the bottom two sides of the pressing fixing plate, and several upper adjusting blocks are installed at intervals along the bottom length direction of the upper adjusting blocks; a shaping pressing block is connected to the bottom of the upper adjusting block; a shaping fixture is installed on each of the top two sides of the shaping platform; the shaping fixture includes two width limiting strips arranged along the length direction of the shaping platform, and two length limiting strips arranged along the length direction of the shaping platform; the two width limiting strips are arranged in parallel and spaced apart, and the two length limiting strips are respectively arranged at one end between the two width limiting strips; a width adjusting block is slidably connected to each of the top two ends of the width limiting strip, and a first limiting wheel is also installed on one side of the width adjusting block perpendicular to the length direction of the shaping platform; a length adjusting block is slidably connected to the top of each of the length limiting strips, and a second limiting wheel is installed on one side of the length adjusting block along the length direction of the shaping platform.

[0013] Furthermore, the weld bead cleaning device includes a cleaning frame, a cleaning translation cylinder mounted on the upper side of one side of the cleaning frame, a first Z-axis cylinder connected to the cleaning translation cylinder, a second Z-axis cylinder connected to the first Z-axis cylinder, and a cleaning lifting seat connected to the second Z-axis cylinder; the cleaning lifting seat is also equipped with a cleaning rotation mechanism, and the cleaning rotation mechanism is also driven by a cleaning brush; the bottom of the cleaning lifting seat is also connected to a cleaning dust extraction hood, and one end of the cleaning dust extraction hood is also equipped with a dust extraction pipe; the other end of the cleaning dust extraction hood is also equipped with an air blowing cleaning component; the weld bead cleaning device also includes a first movable plate and a second movable plate; the bottom of the cleaning lifting seat is provided with a first linear guide, and the first movable plate... A movable plate is slidably arranged on a first linear rail; a second linear rail is also arranged at the bottom of the first movable plate in a direction perpendicular to the first linear rail, and a second movable plate is slidably arranged on the second linear rail; a first bearing is also installed in the middle of the top of the second movable plate, and a first through hole is also opened on the first movable plate corresponding to the first bearing; the cleaning rotation mechanism includes a cleaning rotation motor installed on a cleaning lifting seat, and the output shaft of the cleaning rotation motor is also connected to a cleaning rotation rod; the lower part of the cleaning rotation rod passes through the first through hole, and an eccentric wheel is also connected to the bottom of the cleaning rotation rod; the eccentric wheel is connected to the first bearing; a brush fixing block is also connected to the bottom of the second movable plate, and a cleaning brush is installed on the bottom of the brush fixing block.

[0014] By adopting the above solution, the beneficial effects of the present invention are: This invention enables a series of automated processes, including feeding, assembly, welding, weld inspection and cleaning, shaping, and unloading, of battery top covers and explosion-proof sheets. It features a high degree of automation and high work efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the top cover feeding device of the present invention; Figure 3 This is a schematic diagram of the top cover transfer mechanism and the top cover hopper mechanism of the present invention; Figure 4 This is a schematic diagram of the top cover feeding device of the present invention, omitting the top cover transfer mechanism; Figure 5 This is a schematic diagram of the feeding and turning mechanism of the present invention; Figure 6 This is a schematic diagram of the defective product transfer mechanism of the present invention; Figure 7 This is a schematic diagram of the laser welding apparatus of the present invention; Figure 8 This is a schematic diagram of the welding blanking mechanism of the present invention; Figure 9This is a partial structural schematic diagram of the welding blanking mechanism of the present invention; Figure 10 This is a schematic diagram of the laser welding mechanism and welding lifting mechanism of the present invention; Figure 11 This is a schematic diagram of the top-flat positioning mechanism of the present invention; Figure 12 This is a schematic diagram of the top flat pressure plate of the present invention from another perspective; Figure 13 This is a schematic diagram of the laser welding mechanism of the present invention; Figure 14 This is a schematic diagram of the welding lifting mechanism of the present invention; Figure 15 This is a schematic diagram of the welding feeding mechanism of the present invention; Figure 16 This is a schematic diagram of the structure of the first hopper mechanism of the present invention; Figure 17 This is a schematic diagram of the feeding and transferring mechanism of the present invention; Figure 18 This is a schematic diagram of the weld inspection device of the present invention; Figure 19 This is a partial structural schematic diagram of the weld inspection device of the present invention; Figure 20 This is a schematic diagram of the weld cleaning device of the present invention; Figure 21 This is an exploded view of the cleaning rotation mechanism of the present invention; Figure 22 This is a schematic diagram of the structure of the first transmission device of the present invention; Figure 23 This is a schematic diagram of the pressing and shaping device and the first transmission device of the present invention; Figure 24 This is a schematic diagram of the shaping and handling mechanism of the present invention; Figure 25 This is a schematic diagram of the shaping and pressing mechanism of the present invention; Figure 26 This is a schematic diagram of the structure of the shaping fixture of the present invention; The following are explanations of the labels in the attached diagram: 1. Top cover feeding device; 2. Laser welding device; 3. Weld inspection device; 11. Top cover transfer mechanism; 12. First vision inspection mechanism; 13. Second vision inspection mechanism; 14. Laser marking mechanism; 15. Defective product transfer mechanism; 16. Top cover lifting mechanism; 17. Feeding and turning mechanism; 18. Defective product silo; 19. Top cover transfer mechanism; 21. Welding transfer device; 22. Laser welding mechanism; 23. Welding lifting mechanism; 24. Top leveling and positioning mechanism; 25. Welding unloading mechanism; 26. Third vision inspection mechanism; 27. Lower vision inspection mechanism; 28. Welding feeding mechanism; 31. First transfer device; 32. Weld cleaning device; 33. Lifting and positioning mechanism; 34. Pressing and positioning assembly; 35. Four-vision inspection mechanism; 36. Pressing and shaping device; 37. Sorting and unloading device; 101. Lower layer conveyor line; 102. Upper layer conveyor line; 103. Transfer lifting mechanism; 104. Transfer module; 151. Defective product transfer plate; 152. Defective product lifting cylinder; 153. Defective product lifting plate; 154. Unloading and transfer nozzle; 171. Loading stand; 172. Tilting lifting cylinder; 173. Tilting vertical plate; 174. Tilting rod; 175. Tilting transfer plate; 176. Tilting suction cup; 177. Suction cup fixing block; 221. Welding fixing frame; 222. Welding X-axis translation mechanism; 223. Welding Y-axis translation mechanism; 224. Welding translation frame; 225. Welding Z-axis lifting mechanism; 226. Welding lifting... 227. Plate; Laser welding head; 231. Second clamping plate; 232. First lifting cylinder; 233. First lifting plate; 234. Second lifting plate; 235. First clamping mechanism; 236. First sliding plate; 237. First clamping plate; 238. First clamping block; 239. Second clamping mechanism; 230. Second sliding plate; 241. Top-flat connecting plate; 242. Top-flat pressure plate; 243. Contouring slot; 244. First guide block; 245. Second guide block; 246. Third guide block; 251. Welding unloading rack; 252. Unloading X-axis linear module; 253. Unloading lifting cylinder; 254. Unloading transfer rack; 255. Unloading transfer plate; 256. Unloading transfer suction cup; 257. Air circuit solid 258. Fixed block; 259. Unloading clamping block; 281. First spring; 282. Central transfer mechanism; 283. First hopper mechanism; 284. Loading and transfer mechanism; 325. Cleaning fixing frame; 326. Cleaning translation cylinder; 327. First Z-axis cylinder; 328. Second Z-axis cylinder; 329. Cleaning lifting seat; 320. Cleaning rotation mechanism; 321. Cleaning brush; 322. Air blowing cleaning assembly; 343. First pressing cylinder; 344. First pressing plate; 345. Pressing connecting rod; 366. First pressing block; 367. Buffer pad; 368. Shaping fixing frame; 369. Shaping platform; 360. Shaping and transporting mechanism; 361. Shaping pressing mechanism; 362. Shaping fixture; 1731. Tilting motor;1732. First driving pulley; 1733. First driven pulley; 1734. First synchronous belt; 2271. First dust extraction hood; 2272. First dust extraction pipe; 2273. Dust extraction adapter pipe; 2274. First protective cover; 2341. Adsorption mounting plate; 2342. Third Z-axis cylinder; 2343. First adsorption seat; 2344. First vacuum suction cup; 2821. Material hopper mounting frame; 2822. Material tray support plate; 2823. First carrier box; 2824. First... Panel; 2825, First positioning cylinder; 2826, First stop block; 2827, First limit block; 2828, End limit seat; 2829, Side limit seat; 2831, Transfer fixing frame; 2832, Double-acting linear module; 2833, Transfer sliding frame; 2834, Transfer linear module; 2835, First Z-axis lifting module; 2836, R-axis rotary motor; 2837, Transfer air source connector; 2838, R-axis sensing plate; 2839. U-shaped photoelectric sensor; 3251, cleaning dust extraction hood; 3252, dust extraction pipe; 3253, first movable plate; 3254, second movable plate; 3255, first bearing; 3256, brush fixing block; 3261, cleaning rotary motor; 3262, cleaning rotary rod; 3263, eccentric wheel; 3631, shaping Z-axis lifting mechanism; 3632, shaping X-axis translation mechanism; 3633, shaping translation frame; 3634, shaping connecting seat; 3635, shaping handle. 3636, First suction nozzle; 3641, Shaping and pressing electric cylinder; 3642, Pressing fixing plate; 3643, Upper adjusting block; 3644, Upper adjusting block; 3645, Shaping pressing block; 3646, Upper connecting block; 3647, First guide post; 3648, Guide post connecting frame; 3651, Width limiting strip; 3652, Length limiting strip; 3653, Width adjusting block; 3654, First limiting wheel; 3655, Length adjusting block; 3656, Second limiting wheel. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0017] Reference Figures 1 to 26As shown, the present invention provides a fully automatic welding machine for lithium battery explosion-proof sheets. In one embodiment, it includes a top cover feeding device 1, a laser welding device 2 arranged at one end of the top cover feeding device 1, and a weld bead detection device 3 arranged at one end of the laser welding device 2. The top cover feeding device 1 includes a top cover conveying mechanism 11, a top cover hopper mechanism arranged on one side of the top cover conveying mechanism 11, a top cover transfer mechanism 19 arranged at one end of the top cover conveying mechanism 11, and a laser marking mechanism 14 and a defective product transfer mechanism 15 arranged on the other side of the top cover conveying mechanism 11. The top cover conveying mechanism... A first visual inspection mechanism 12 and a second visual inspection mechanism 13 are arranged between the structure 11 and the top cover hopper mechanism; the laser marking mechanism 14 is located between the first visual inspection mechanism 12 and the second visual inspection mechanism 13, and a top cover lifting mechanism 16 is arranged below the top cover transmission mechanism 11 and corresponding to the laser marking mechanism 14; the defective product transfer mechanism 15 is arranged near the other end of the top cover transmission mechanism 11, and a defective product hopper 18 is arranged on one side of the defective product transfer mechanism 15; a feeding and turning mechanism 17 is arranged at the other end of the top cover transmission mechanism 11.

[0018] During operation, the top cover feeding device 1 first transfers the battery top cover to the laser welding device 2. Then, the welding feeding mechanism 28 assembles the explosion-proof sheet into the corresponding hole of the top cover. Subsequently, the laser welding device 2 welds the explosion-proof sheet. After welding, it is transferred to the weld inspection device 3. The weld inspection device 3 inspects, cleans, and pressure-holds the welded area. Finally, it is transferred to the next process. Specifically, in this embodiment, the top cover hopper mechanism includes a lower transmission line 101, an upper transmission line 102 arranged above the lower transmission line 101, and a transfer mechanism arranged at one end of the lower transmission line 101 and the upper transmission line 102.

[0019] In this embodiment, the first visual inspection mechanism 12 includes two industrial cameras, respectively arranged above and below the top cover transmission mechanism 11, for detecting whether the battery top cover is placed upside down; the second visual inspection mechanism 13 includes an inspection camera arranged above the top cover transmission mechanism 11, for re-inspecting the battery top cover after it has been marked by the laser marking mechanism 14 (an existing laser marking machine can be used); during operation, the upper transmission line 102 first carries a tray containing the battery top cover (the tray has inserts at both ends to facilitate the stacking of battery top covers, and limit bars on both sides of the tray) The battery top cover (which can be limited on both sides) is transferred to the loading position, namely the top cover transfer mechanism 19. The top cover transfer mechanism 19 transfers the battery top cover to the top cover conveyor mechanism 11 (the empty tray will be transferred to the intermediate transfer mechanism, which will then transfer the empty tray to the lower conveyor line 101, which will then transfer it to the tray recycling point). Subsequently, the top cover conveyor mechanism 11 transfers the battery top cover to the first vision inspection mechanism 12, which checks whether it is placed upside down. Then, the top cover conveyor mechanism 11 continues to transfer it to the laser marking mechanism 14. At the top cover lifting mechanism 16, the battery top cover is lifted, and the laser marking mechanism 14 marks it. After marking, the top cover lifting mechanism 16 returns the battery top cover to the top cover transfer mechanism 11, which then transfers the battery top cover to the second vision inspection mechanism 13. The second vision inspection mechanism 13 performs a re-inspection. After the re-inspection, the top cover transfer mechanism 11 transfers the battery top cover to its end. If the re-inspection by the second vision inspection mechanism 13 fails, the defective product transfer mechanism 15 transfers the defective top cover to the defective product silo 18. If the battery top cover... If placed in the wrong direction, the flipping drive mechanism flips it over and then places it on the laser welding device 2. The qualified battery top cover can be directly transferred to the laser welding device 2. At the same time, a lifting mechanism is arranged below the other end of the top cover transfer mechanism 11. This lifting mechanism can lift the battery top cover so that the defective product transfer mechanism 15 can transfer the defective product, and it also facilitates the loading flipping mechanism 17 to flip the top cover. The structure of the lifting mechanism and the top cover lifting mechanism 16 are similar to the welding lifting mechanism 23. Their working principle can be referred to the following discussion on the welding lifting mechanism 23, which will not be repeated here.

[0020] Meanwhile, preferably, in this embodiment, the transfer mechanism includes a transfer mounting frame, a transfer lifting mechanism 103 installed on one side of the transfer mounting frame, a transfer lifting frame connected to the transfer lifting mechanism 103, and a transfer transmission module 104 installed on the top of the transfer lifting frame; the top cover transfer mechanism 19 includes a loading fixing frame, a loading translation mechanism arranged on the loading fixing frame in the transmission direction perpendicular to the top cover transmission mechanism 11, a loading lifting mechanism connected to the loading translation mechanism, and a loading lifting frame connected to the loading lifting mechanism; the loading lifting frame is also equipped with a loading transfer suction cup. The transfer lifting mechanism 103 adopts an existing linear module. The transfer lifting mechanism 103 can drive the transfer lifting frame to rise and fall, so as to connect to the upper transmission line 102 and the lower transmission line 101 respectively. The loading translation mechanism and the loading lifting mechanism can adopt existing linear modules. With the cooperation of the two, the loading lifting frame can be driven to perform translation and lifting movements so that the loading transfer suction cup can transfer the battery top cover. At the same time, in order to improve the transfer efficiency, a first adjustment hole is opened at each of the two ends of the bottom of the loading lifting frame, and two loading transfer suction cups are installed in each first adjustment hole.

[0021] Furthermore, preferably, the loading and tilting mechanism 17 includes two loading uprights 171, which are arranged opposite to each other, and each loading upright 171 is equipped with a tilting and lifting cylinder 172 on one side; each tilting and lifting cylinder 172 drives and connects to a tilting vertical plate 173, and a tilting rod 174 is rotatably connected between the two tilting vertical plates 173; a tilting transfer plate 175 is connected to the tilting rod 174, and a tilting suction cup 176 is also installed on the tilting transfer plate 175; a tilting drive mechanism connected to the tilting rod 174 is also installed on one of the tilting vertical plates 173. The flipping drive mechanism can drive the flipping rod 174 to rotate, thereby flipping the battery top cover picked up by the flipping suction cup 176 by 180°. Preferably, a first through hole is opened on each of the top two sides of the flipping transfer plate 175. The loading and flipping mechanism 17 also includes a suction cup fixing block 177. The bottom of the suction cup fixing block 177 also has a first extension block extending downward, and the first extension block is inserted into the first through hole. The flipping suction cup 176 is installed on the suction cup fixing block 177, and the lower part of the flipping suction cup 176 is arranged through the first through hole. The position of the suction cup fixing block 177 can be adaptively adjusted according to the actual product size and type, which is highly versatile. At the same time, the flipping drive mechanism includes a flipping motor 1731 installed on the flipping vertical plate 173, a first driving wheel 1732 connected to the output shaft of the flipping motor 1731, a first driven wheel 1733 installed on the flipping rod 174, and a first synchronous belt 1734 wound between the first driving wheel 1732 and the first driven wheel 1733. The use of a motor in conjunction with a drive wheel and a transmission belt ensures the stability of the top cover's rotation.

[0022] Furthermore, the defective product transfer mechanism 15 includes a first upright frame, a defective product translation mechanism arranged along the length of the vertical feeding and conveying mechanism on the first upright frame, and a defective product translation plate 151 connected to the defective product translation mechanism. A defective product lifting cylinder 152 is installed on the lower part of each of the two sides of the defective product translation plate 151, and each defective product lifting cylinder 152 drives and connects to a defective product lifting plate 153. A discharge transfer nozzle 154 is also installed on the defective product lifting plate 153. The defective product translation mechanism can drive the defective product translation plate 151 to move along the length of the feeding and conveying mechanism, moving the defective product translation plate 151 above the top cover conveying mechanism 11. Then, the defective product lifting cylinder 152 drives the defective product lifting plate 153 to descend, causing the discharge transfer nozzle 154 to contact and adsorb the defective battery top cover. Then, the defective battery top cover is transferred to the defective product hopper 18.

[0023] In one embodiment, the laser welding device 2 includes a welding transfer device 21, a laser welding mechanism 22 arranged on one side of the welding transfer device 21, a welding lifting mechanism 23 arranged below the welding transfer device 21, and a welding unloading mechanism 25 arranged at one end of the welding transfer device 21; a third vision inspection mechanism 26 is also arranged on one side of the welding transfer device 21, and a welding loading mechanism 28 is also arranged on the other side of the welding transfer device 21.

[0024] In this embodiment, a lower vision inspection mechanism 27 is also arranged between the welding transfer device 21 and the welding loading mechanism 28. A top-leveling positioning mechanism 24 is also arranged above the welding transfer device 21 corresponding to the welding lifting mechanism 23. Both the third vision inspection mechanism 26 and the lower vision inspection mechanism 27 include an industrial camera and a light source. The welding transfer device 21 connects to the upstream transmission line to receive the battery top cover. The welding loading mechanism 28 is used to transfer explosion-proof sheets from the explosion-proof sheet hopper, first transferring them to the lower vision inspection mechanism 27 for lower positioning. The third vision inspection mechanism 26 positions the corresponding assembly holes of the battery top cover. Subsequently, the welding loading mechanism 28 assembles the explosion-proof sheets into the corresponding holes of the battery top cover. In this embodiment, a first lifting mechanism is also arranged below the welding transfer device 21. The first lifting mechanism is located at the... Below the three-vision inspection mechanism 26, the battery top cover is lifted to facilitate the assembly of the explosion-proof sheet by the welding feeding mechanism 28. The structure of the first lifting mechanism is similar to that of the welding lifting mechanism 23, and its working principle can be referred to the following discussion on the welding lifting mechanism 23, which will not be repeated here. After the explosion-proof sheet is assembled, the welding transmission device 21 transfers the battery top cover to the welding lifting mechanism 23. The welding lifting mechanism 23 lifts the battery top cover upward to the top leveling positioning mechanism 24. Through the cooperation of the two, the battery top cover is fixed in the upper limit in the Z direction. Subsequently, the laser welding mechanism 22 welds the explosion-proof sheet. After the welding is completed, the welding lifting mechanism 23 puts the top cover back onto the welding transmission device 21, which then transfers it to the welding unloading mechanism 25. The welding unloading mechanism 25 transfers it to the next process.

[0025] In this embodiment, the welding loading mechanism 28 includes a central transfer loading mechanism 281, a first hopper mechanism 282 disposed at one end of the central transfer loading mechanism 281, and a loading and transfer mechanism 283 disposed on one side of the central transfer loading mechanism 281; the first hopper mechanism 282 includes a hopper mounting frame 2821, a tray plate 2822 slidably connected to the top of the hopper mounting frame 2821, and a first carrier box 2823 mounted on the top of the tray plate 2822; the top of the first carrier box 2823 is provided with a first carrier groove for carrying explosion-proof sheets; one end of the tray plate 2822 is connected to a first panel 2824, and the first... A first handle is provided on one side of a panel 2824; a first positioning cylinder 2825 is installed vertically at the bottom end of the hopper mounting bracket 2821 away from the first panel 2824, and the first positioning cylinder 2825 is also connected to a first positioning rod; a positioning hole is also provided at the top end of the tray plate 2822 corresponding to the first positioning rod; a first stop block 2826 is also connected to the top end of the hopper mounting bracket 2821 away from the first panel 2824, and a first limit block 2827 is also connected to the bottom end of the tray plate 2822 away from the first panel 2824 corresponding to the first stop block 2826.

[0026] In this implementation, the first hopper mechanism 282 is used to store and provide explosion-proof discs. A tray 2822 is slidably connected to the top of the hopper mounting frame 2821 to support a first support box 2823. A first support groove on the top of the first support box 2823 is used to place the explosion-proof discs. A first handle on the first panel 2824 allows the operator to pull the tray 2822 to clean or replenish the explosion-proof discs. After replenishing the discs, it is pushed to a predetermined position. At this time, the first positioning cylinder 2825 drives... The first positioning rod rises and inserts into the positioning hole to lock it, preventing it from shaking when the loading and transfer mechanism 283 transfers the explosion-proof sheet. The first stop block 2826 and the first limit block 2827 cooperate to limit the movement of the material tray 2822. During operation, the loading and transfer mechanism 283 first transfers the explosion-proof sheet to the intermediate transfer mechanism 281, which then transfers it to the loading position. Finally, the loading and transfer mechanism 283 transfers the explosion-proof sheet to the corresponding hole in the battery top cover.

[0027] Preferably, in this embodiment, both the first stop block 2826 and the first limiting block 2827 are L-shaped, with the vertical L-shaped end of the first stop block 2826 facing upwards and the vertical L-shaped end of the first limiting block 2827 facing downwards; a first groove is formed at each of the top two ends of the material tray 2822 along the length of the material tray 2822, and a second groove is formed on each of the top two sides of the material tray 2822 along the width of the material tray 2822; the first hopper mechanism 282 further includes two end limiting seats 2828 and two side limiting seats 2829; the end limiting seats 2828 are L-shaped, and the L-shaped end limiting seats 2828 are L-shaped. The bottom of the horizontal end also extends downward with a first guide block; the L-shaped vertical ends of the two end limiting seats 2828 are arranged opposite each other, and the first guide blocks of the two end limiting seats 2828 are respectively slidably arranged in a first slide groove; the L-shaped horizontal end of the end limiting seat 2828 is also provided with a first oval hole; the side limiting seat 2829 has an L-shaped structure, and the bottom of the L-shaped horizontal end of the side limiting seat 2829 also extends downward with a second guide block; the L-shaped vertical ends of the two side limiting seats 2829 are arranged opposite each other, and the second guide blocks of the two side limiting seats 2829 are respectively slidably arranged in a second slide groove; the L-shaped horizontal end of the side limiting seat 2829 is also provided with a second oval hole. The first carrier box 2823 can be fixed by the end limit seat 2828 and the side limit seat 2829 to ensure its stability when transferring the explosion-proof sheet. At the same time, the end limit seat 2828 and the side limit seat 2829 can slide relative to the material tray plate 2822, so the position of the first carrier box 2823 can be adjusted according to the actual use environment. Then, screws can be locked into the oval hole to lock it in place.

[0028] Meanwhile, the transfer mechanism 281 includes a first linear module, one end of which extends below the hopper mounting frame 2821. The first linear module is also connected to a transfer platform, with a first limiting groove at each end of the top of the transfer platform. A first mounting hole is also provided in the first limiting groove, and a positioning suction cup is installed in the first mounting hole. An air source connector communicating with the positioning suction cup is also installed at one end of the transfer platform. The positioning suction cup on the transfer platform is used to hold the explosion-proof sheet, ensuring its stability during transfer. The first linear module can drive the transfer platform to move, facilitating its translation to a predetermined loading position, awaiting loading by the loading mechanism 283.

[0029] Furthermore, the loading and transfer mechanism 283 includes a transfer fixing frame 2831 arranged on one side of the transfer mechanism 281, and a dual-moving linear module 2832 mounted on the transfer fixing frame 2831. The dual-moving linear module 2832 is arranged along the length of the transfer mechanism 281, and the two moving parts of the dual-moving linear module 2832 are respectively connected to a loading and transfer module. The two moving parts of the dual-moving linear module 2832 are respectively connected to a loading and transfer module, and the two loading and transfer modules can move independently. One loading and transfer module is used to transfer the explosion-proof sheet in the first carrier box 2823 to the first limiting groove of the transfer platform. Subsequently, the transfer platform moves to the predetermined loading position, and the other loading and transfer module transfers the explosion-proof sheet in the first limiting groove to the corresponding groove of the battery top cover.

[0030] Preferably, the loading and transfer module includes a transfer sliding frame 2833 connected to the double-acting linear module 2832, a transfer linear module 2834 mounted on the transfer sliding frame 2833 perpendicular to the length of the double-acting linear module 2832, and a first Z-axis lifting module 2835 connected to the second linear module; the first Z-axis lifting module 2835 is also driven and connected to a Z-axis lifting vertical plate, and the bottom of the Z-axis lifting vertical plate is also connected to a Z-axis lifting horizontal plate; a loading and transfer assembly is also mounted on the Z-axis lifting horizontal plate; the loading and transfer assembly includes an R-axis rotary motor 2836 mounted vertically on the Z-axis lifting horizontal plate. Furthermore, the two ends of the motor shaft of the R-axis rotary motor 2836 pass through the top and bottom of the R-axis rotary motor 2836 respectively; the motor shaft of the R-axis rotary motor 2836 has an axially hollow structure, and a first transfer suction cup is installed at the bottom of the motor shaft, and a transfer air source connector 2837 is installed at the top of the motor shaft; a rotating disk is also installed on the upper part of the motor shaft of the R-axis rotary motor 2836, and an R-axis sensing plate 2838 is connected to the top of the rotating disk; a sensing fixing plate is also connected to one side of the Z-axis lifting vertical plate, and a U-shaped photoelectric sensor 2839 that works in conjunction with the R-axis sensing plate 2838 is also installed at the bottom of the sensing fixing plate.

[0031] The motor shaft adopts an axially hollow structure. The transfer air source connector 2837 at the top of the motor shaft is used to connect to an external air source so that the suction cup at the bottom of the motor shaft can pick up the explosion-proof sheet. The R-axis rotary motor 2836 can drive the motor shaft to rotate the explosion-proof sheet, thereby adjusting the angle of the explosion-proof sheet to adapt to different welding requirements. At the same time, through the cooperation of the R-axis sensing plate 2838 and the U-shaped photoelectric sensor 2839, the position of the rotating disk can be detected, thereby facilitating the control of the R-axis rotary motor 2836.

[0032] In one embodiment, a top-leveling positioning mechanism 24 is also arranged above the welding transfer device 21 corresponding to the welding lifting mechanism 23; the laser welding mechanism 22 includes a welding fixing frame 221 arranged on one side of the welding transfer device 21, a welding X-axis translation mechanism 222 arranged on top of the welding fixing frame 221 along the transmission direction of the welding transfer device 21, a welding Y-axis translation mechanism 223 connected to the welding X-axis translation mechanism 222, a welding translation frame 224 connected to the welding Y-axis translation mechanism 223, and a welding Z-axis lifting mechanism 225 installed at one end of the welding translation frame 224; the welding Z-axis lifting mechanism The structure 225 is also driven by a welding lifting plate 226, and a laser welding head 227 is installed on one side of the welding lifting plate 226; the output end of the laser welding head 227 is also fitted with a first dust extraction hood 2271, and a first dust extraction pipe 2272 is also installed on the first dust extraction hood 2271; a dust extraction adapter pipe 2273 connected to the first dust extraction pipe 2272 is also installed on one side of the welding translation frame 224; two first protective covers 2274 are also connected to the top of the welding transmission device 21, the two first protective covers 2274 are arranged opposite to each other, and the top flat positioning mechanism 24 is located between the two first protective covers 2274.

[0033] In this embodiment, the welding X-axis translation mechanism 222, the welding Y-axis translation mechanism 223, and the welding Z-axis lifting mechanism 225 can all use existing linear modules. With the cooperation of the three, the laser welding head 227 (which can be an existing product) can be driven to perform translation and lifting movements, which facilitates the welding of the explosion-proof sheet by the laser welding head 227. At the same time, the output end of the laser welding head 227 is also equipped with a first dust extraction hood 2271. A dust collector can be connected to the outside through the first dust extraction pipe 2272 and the dust extraction adapter pipe 2273 to extract the dust and harmful gases generated during the welding process in a timely manner, reduce their diffusion in the working environment, and thus effectively protect the health of the operators. To improve the dust extraction efficiency, the first dust extraction pipe 2272 is provided in two sets. At the same time, two first protective covers 2274 are also provided to prevent dust and foreign objects generated during the welding process from splashing to the outside.

[0034] Preferably, the welding transfer device 21 includes two welding transfer frames arranged in parallel and spaced apart, and a conveyor belt mechanism is installed on each opposite side of the two welding transfer frames; the welding lifting mechanism 23 includes a lifting base plate, a first lifting cylinder 232 installed on the top of the lifting base plate, a first lifting plate 233 connected to the first lifting cylinder 232, a first support column connected to the middle of the top of the first lifting plate 233, and a second lifting plate 234 arranged perpendicular to the length direction of the first lifting plate 233 and connected to the first support column; the first lifting plate 233 has... A first clamping mechanism 235 is installed along its length, and the first clamping mechanism 235 is also driven to connect two first sliding plates 236; a first clamping plate 237 is connected to the top of each first sliding plate 236 in the vertical direction, and a first clamping block 238 is also connected to the top of the first clamping plate 237; a second clamping mechanism 239 is installed on the second lifting plate 234 along its length, and the second clamping mechanism 239 is also driven to connect two second sliding plates 230; a second clamping plate 231 is also connected to the top of each second sliding plate 230 in the vertical direction.

[0035] In this embodiment, the welding transfer device 21 further includes a transfer base plate and a bidirectional lead screw. Two welding transfer frames are slidably arranged on the transfer base plate. The bidirectional lead screw is connected to the two welding transfer frames in opposite directions, respectively. One end of the bidirectional lead screw is also equipped with a handwheel, which can be manually rotated to adjust the distance between the two welding transfer frames via the bidirectional lead screw, so as to adapt to the transfer of battery top covers of different types and sizes, and has strong versatility. The first clamping mechanism 235 and the second clamping mechanism 239 are both driven by a motor and a synchronous belt. The two first sliding plates 236 are respectively connected to one side of a synchronous belt, and the two second sliding plates 230 are respectively connected to one side of another synchronous belt. The first lifting cylinder 232 can drive the first lifting plate 233 to drive the second lifting plate 234 to rise, so as to lift the battery top cover, while the first clamping mechanism 235 can... The first sliding plates 236 are driven to move closer together, so that the two ends of the battery top cover are clamped and limited by the first clamping block 238. The second clamping mechanism 239 can drive the two second sliding plates 230 to move closer together, so that the two sides of the battery top cover are clamped and limited by the second clamping plate 231. Through the cooperation of the two, the battery top cover can be positioned in the center. At the same time, in order to improve work efficiency, two first clamping plates 237 are connected to the first sliding plate 236, and two second clamping plates 231 are connected to the second sliding plate 230. Two stop rods are also connected in the middle of the second lifting plate 234. In addition, two sets of third Z-axis cylinders 2342 are also provided, with one third Z-axis cylinder 2342 arranged between each second sliding plate 230 and the stop rod. In this way, two products can be clamped and positioned at one time, improving work efficiency.

[0036] Meanwhile, the second lifting plate 234 is also connected to an adsorption mounting plate 2341, and the adsorption mounting plate 2341 is located between two second sliding plates 230; the top of the adsorption mounting plate 2341 is also equipped with a third Z-axis cylinder 2342, and the third Z-axis cylinder 2342 is also connected to a first adsorption seat 2343; the top of the first adsorption seat 2343 is also equipped with a first vacuum suction cup 2344; a first bracket is arranged on one side of each welding transmission frame; the top flat positioning mechanism 24 includes a top flat connecting plate 241 connected between the tops of the two first brackets, and a top flat pressure plate 242 connected to the bottom of the top flat connecting plate 241; the top of the top flat pressure plate 242 is provided with a contoured card hole 243; the two ends of the top flat pressure plate 242 are each provided with a first guide block 244, and the two sides of the top flat pressure plate 242 are each provided with a second guide block 245. The first vacuum suction cup 2344 on the top of the first adsorption seat 2343 can adsorb the battery top cover, ensuring its stable placement during the lifting process. The welding lifting mechanism 23 can lift the battery top cover to the top flat pressure plate 242, thereby achieving Z-axis positioning. The top flat pressure plate 242 has a contoured card hole 243 corresponding to the explosion-proof sheet, which facilitates the laser welding mechanism 22 to weld it. After the welding lifting mechanism 23 lifts the top cover and centers it, it will drive the first clamping plate 237 and the second clamping plate 231 away from the top cover. The top cover will continue to be lifted to the bottom of the top flat pressure plate 242. The first guide block 244 and the second guide block 245 at the bottom of the top flat pressure plate 242 will limit and fix it, ensuring its stable placement during welding.

[0037] Preferably, the top flat pressure plate 242 has a first locking hole at each of its top two ends and a second locking hole on each of its sides; the first guide block 244 has an L-shaped structure, with its L-shaped horizontal end connected to the top of the top flat pressure plate 242 and its L-shaped vertical end extending downward after passing through the first locking hole; the second guide block 245 has an L-shaped structure, with its L-shaped horizontal end connected to the top of the top flat pressure plate 242 and its L-shaped vertical end extending downward after passing through the second locking hole; both the lower part of one side of the L-shaped vertical end of the first guide block 244 and the lower part of one side of the L-shaped vertical end of the second guide block 245 have downwardly inclined guide surfaces. The device features an inclined guide surface, allowing the battery top cover to smoothly engage between the first guide block 244 and the second guide block 245. Furthermore, the bottom center of the top flat pressure plate 242 is equipped with two third guide blocks 246, each corresponding to a second guide block 245. The third guide blocks 246 have a similar structure to the first and second guide blocks 244 and 245. This layout allows for the simultaneous positioning of two battery top covers, improving work efficiency. Additionally, the L-shaped horizontal end of the guide blocks has an oblong through hole, allowing for adaptive adjustment of the guide block's position according to product dimensions. A screw can then be tightened into the oblong through hole, making it convenient to use.

[0038] In one embodiment, the welding unloading mechanism 25 includes a welding unloading frame 251, an unloading X-axis linear module 252 mounted on the welding unloading frame 251, an unloading lifting cylinder 253 connected to the unloading X-axis linear module 252, and an unloading transfer frame 254 connected to the unloading lifting cylinder 253. An unloading transfer plate 255 is also mounted on the unloading transfer frame 254, and an unloading transfer suction cup 256 is also mounted on the unloading transfer plate 255. The unloading X-axis linear module 252 uses a translation cylinder. With the cooperation of the unloading X-axis linear module 252 and the unloading lifting cylinder 253, the unloading transfer plate 255 can be driven to perform translational and lifting movements so that the unloading transfer suction cup 256 can transfer the battery top cover.

[0039] Preferably, the top two ends of the unloading transfer plate 255 each have a first mounting groove, and a second through hole is also provided in the first mounting groove; an air passage fixing block 257 is also installed in the first mounting groove, and the unloading transfer suction cup 256 is installed on the air passage fixing block 257, with the lower part of the unloading transfer suction cup 256 passing through the second through hole. The air passage fixing block 257 has screw holes, allowing the position of the air passage fixing block 257 to be adjusted according to the actual usage environment, and then screws can be tightened into the screw holes.

[0040] In addition, the welding unloading mechanism 25 also includes an unloading and pressing assembly; the unloading and pressing assembly includes an unloading clamping block 258 and an unloading pressing column; the unloading clamping block 258 is installed in the first mounting groove, the lower part of the unloading pressing column passes through the second through hole, and the upper part of the unloading pressing column moves through the unloading clamping block 258; the top of the unloading pressing column is provided with a first limiting step, and the bottom of the unloading pressing column is also provided with a second limiting step; a first spring 259 is also sleeved on the unloading pressing column, and the first spring 259 is located between the top of the second limiting step and the bottom of the unloading clamping block 258. The unloading and pressing assembly is arranged above the slot for installing the explosion-proof sheet on the battery top cover. When the unloading transfer suction cup 256 transfers the battery top cover, the unloading pressing column can press down on the explosion-proof sheet to ensure that no displacement occurs during the transfer process, thereby improving the welding quality.

[0041] In one embodiment, the weld inspection device 3 includes a first transmission device 31, a weld cleaning device 32 arranged on one side of the first transmission device 31, a fourth vision inspection mechanism 35 arranged on the other side of the first transmission device 31, and a pressing and shaping device 36 arranged at one end of the first transmission device 31; a sorting and unloading device 37 is also arranged on one side of the first transmission device 31 near the pressing and shaping device 36; the pressing and shaping device 36 includes a shaping fixing frame 361, a shaping platform 362 installed in the shaping fixing frame 361, a shaping transport mechanism 363 installed on one side of the shaping fixing frame 361, and a shaping pressing mechanism 364 installed on the top of the shaping fixing frame 361 and above the shaping platform 362; a shaping fixture 365 for carrying products is also installed on the shaping platform 362.

[0042] In this embodiment, the fourth vision inspection mechanism 35 includes a vision inspection frame and two industrial cameras mounted on the vision inspection frame. Each industrial camera has a light source arranged below it. During operation, the first transmission device 31 connects to the upstream transmission line to receive the battery top cover after the explosion-proof sheet has been welded. Then, the battery top cover is transmitted to the weld cleaning device 32, which cleans the welding area on the battery top cover. After cleaning, the first transmission device 31 transmits the top cover to the fourth vision inspection mechanism 35 for inspection by the industrial cameras. If the inspection is qualified, the top cover is transmitted to the shaping and transporting mechanism 363. The shaping and transporting mechanism 363 transfers the top cover to the shaping fixture 365. Subsequently, the shaping and pressing mechanism 364 presses down and shapes the battery top cover. After shaping, the shaping and transporting mechanism 363 transports it to the downstream transmission line. Top covers that fail the inspection are sorted and unloaded by the sorting and unloading device 37.

[0043] Preferably, in this embodiment, the shaping and transporting mechanism 363 includes a shaping Z-axis lifting mechanism 3631 connected to one side of the shaping fixing frame 361, a shaping X-axis translation mechanism 3632 connected to the shaping Z-axis lifting mechanism 3631, and a shaping translation frame 3633 connected to the shaping X-axis translation mechanism 3632; a shaping transporting module is connected to each end of one side of the shaping translation frame 3633; the shaping transporting module includes a shaping connecting seat 3634 connected to one side of the shaping translation frame 3633, and a shaping transporting rod 3635 is connected to each end of the bottom of the shaping connecting seat 3634; a plurality of first suction nozzles 3636 are installed at intervals along the length direction of the bottom of the shaping transporting rod 3635, and a shaping air source connector communicating with the first suction nozzles 3636 is also installed on the top of the shaping transporting rod 3635.

[0044] The Z-axis lifting mechanism 3631 and the X-axis translation mechanism 3632 both adopt existing linear modules, while the shaping and transporting mechanism 363 is equipped with two sets of shaping and transporting modules. One shaping and transporting module can transfer the product to the shaping fixture 365 for shaping, while the other shaping and transporting module can transport the shaped product to the downstream transmission line. This seamless working method can ensure the uninterrupted continuous operation of the production line, thereby greatly improving work efficiency. In addition, each shaping and transporting module is equipped with two shaping and transporting rods 3635, which can transport two battery top covers at one time, further improving work efficiency.

[0045] Meanwhile, the shaping fixing frame 361 includes a shaping base plate; a shaping vertical plate is connected to each of the top two ends of the shaping base plate, and a shaping horizontal plate is connected between the tops of the two shaping vertical plates; the shaping Z-axis lifting mechanism 3631 is installed on one side of one of the shaping vertical plates, the shaping platform 362 is arranged on the shaping base plate, and the shaping pressing mechanism 364 is installed on the shaping horizontal plate; the shaping pressing mechanism 364 includes a shaping pressing electric cylinder 3641 installed on the shaping horizontal plate, and a pressing fixing plate 3642 connected to the shaping pressing electric cylinder 3641 and located above the shaping platform 362; an upper adjusting block 3643 is connected to each of the bottom two sides of the pressing fixing plate 3642, and several upper adjusting blocks 3644 are installed at intervals along the length direction of the bottom of the upper adjusting blocks 3643; a shaping pressing block 3645 is connected to the bottom of the upper adjusting block 3644. The extension and retraction of the shaping and pressing electric cylinder 3641 can drive the pressing and fixing plate 3642 to move up and down, and then the shaping pressing block 3645 can press and shape the battery top cover. The number, shape and size of the shaping pressing block 3645 can be adjusted according to the product.

[0046] Preferably, the bottom of the upper adjusting block 3643 has a first sliding groove extending to both ends along its length, and each of the inner walls of the first sliding groove has a first slot extending to both ends of the upper adjusting block 3643; the top of the upper adjusting block 3644 is integrally connected to an upper connecting block 3646 with a T-shaped structure, and the T-shaped ends of the upper connecting block 3646 are respectively inserted into a first slot; a plurality of first fixing holes are spaced apart along the length of both sides of the upper adjusting block 3643. The upper adjusting block 3644 can slide within the first sliding groove of the upper adjusting block 3643, thereby allowing manual adjustment of the position of the shaping pressure block 3645 according to the actual product type, providing strong versatility. After adjusting the position of the shaping pressure block 3645, it can be fixed by locking screws into the first fixing holes, making it convenient to use.

[0047] Furthermore, a first guide post 3647 is connected to each of the four top corners of the pressing and fixing plate 3642, and a first linear bearing is installed on the shaping plate at the corresponding position of the first guide post 3647; the upper part of the first guide post 3647 passes through the first linear bearing, and a guide post connecting bracket 3648 is connected between the tops of the four first guide posts 3647. Through the cooperation of the first guide posts 3647 and the first linear bearings, precise guidance is provided for the up and down movement of the pressing and fixing plate 3642, ensuring its stability during lifting and lowering.

[0048] In one embodiment, a shaping fixture 365 is installed on each of the top two sides of the shaping platform 362; the shaping fixture 365 includes two width limiting strips 3651 arranged along the length direction of the shaping platform 362, and two length limiting strips 3652 arranged along the length direction of the shaping platform 362; the two width limiting strips 3651 are arranged in parallel and spaced apart, and the two length limiting strips 3652 are respectively arranged at one end between the two width limiting strips 3651; the width limiting strips 3651... A width adjustment block 3653 is slidably connected to each of the top two ends, and a first limiting wheel 3654 is also installed on one side of the width adjustment block 3653 perpendicular to the length direction of the shaping platform 362; a length adjustment block 3655 is slidably connected to the top of each of the length limiting bars 3652, and a second limiting wheel 3656 is installed on one side of the length adjustment block 3655 along the length direction of the shaping platform 362; a second fixing hole is provided on both the width adjustment block 3653 and the length adjustment block 3655.

[0049] The width limiting strip 3651 and the length limiting strip 3652 work together to limit, fix, and support the two ends and sides of the battery top cover, ensuring its stability when the shaping and pressing mechanism 364 presses it down. Simultaneously, the positions of the width adjusting block 3653 and the length adjusting block 3655 can be manually adjusted to accommodate top covers of different sizes, offering high versatility. After adjustment, screws are tightened into the second fixing holes to secure it. A position sensor is also installed on the shaping platform 362, positioned between the two length limiting strips 3652. The position sensor detects whether the top cover is in place, facilitating backend control of the shaping and pressing mechanism 364 to press and shape the top cover.

[0050] In one embodiment, the weld cleaning device 32 includes a cleaning frame 321, a cleaning translation cylinder 322 mounted on the upper side of one side of the cleaning frame 321, a first Z-axis cylinder 323 connected to the cleaning translation cylinder 322, a second Z-axis cylinder 324 connected to the first Z-axis cylinder 323, and a cleaning lifting seat 325 connected to the second Z-axis cylinder 324; a cleaning rotation mechanism 326 is also mounted on the cleaning lifting seat 325, and the cleaning rotation mechanism 326 is also driven to connect a cleaning brush 327; a cleaning dust extraction hood 3251 is also connected to the bottom of the cleaning lifting seat 325, and a dust extraction pipe 3252 is also installed at one end of the cleaning dust extraction hood 3251; an air blowing cleaning component 328 is also installed at the other end of the cleaning dust extraction hood 3251.

[0051] In this embodiment, the cleaning fixture 321 includes a cleaning base, a first column connected to the top of the cleaning base, and a cleaning mounting seat installed on the first column. The cleaning translation cylinder 322 is installed on one side of the cleaning mounting seat. With the cooperation of the cleaning translation cylinder 322 and two Z-axis cylinders, the cleaning brush 327 can be driven to move to the area to be cleaned. The cleaning rotation mechanism 326 can drive the cleaning brush 327 to move to clean the weld bead. The dust extraction pipe 3252 on the cleaning dust extraction hood 3251 is connected to a dust extractor, which can remove foreign objects such as welding slag generated during the cleaning process. The air blowing cleaning component 328 can blow air onto the weld bead to further remove residual foreign objects and achieve comprehensive cleaning of the weld bead.

[0052] Preferably, in this embodiment, the weld cleaning device 32 further includes a first movable plate 3253 and a second movable plate 3254; a first linear rail is arranged at the bottom of the cleaning lifting seat 325, and the first movable plate 3253 is slidably arranged on the first linear rail; a second linear rail is also arranged at the bottom of the first movable plate 3253 in a direction perpendicular to the first linear rail, and the second movable plate 3254 is slidably arranged on the second linear rail; a first bearing 3255 is also installed in the middle of the top of the second movable plate 3254, and a corresponding opening is provided on the first movable plate 3253. The cleaning rotating mechanism 326 includes a first through hole; it comprises a cleaning rotating motor 3261 mounted on a cleaning lifting seat 325, and the output shaft of the cleaning rotating motor 3261 is also connected to a cleaning rotating rod 3262; the lower part of the cleaning rotating rod 3262 passes through the first through hole, and the bottom of the cleaning rotating rod 3262 is also connected to an eccentric wheel 3263; the eccentric wheel 3263 is connected to a first bearing 3255; the bottom of the second movable plate 3254 is also connected to a brush fixing block 3256, and a cleaning brush 327 is mounted on the bottom of the brush fixing block 3256. The cleaning rotating motor 3261 can drive the second movable plate 3254 and the first movable plate 3253 to move through the cleaning rotating rod 3262 and the eccentric wheel 3263, thereby driving the cleaning brush 327 to move to clean the battery top cover. This method can increase the movement range of the cleaning brush 327 and improve cleaning efficiency.

[0053] Meanwhile, the air-blowing cleaning assembly 328 includes two air-blowing fixing plates; the two air-blowing fixing plates are arranged parallel and spaced apart at the other end of the cleaning dust extraction hood 3251, and a first air-blowing seat is connected between the two air-blowing fixing plates; a first air-blowing port is opened at the bottom of the first air-blowing seat, and an air source connector communicating with the first air-blowing port is installed on one side of the first air-blowing seat. The first air-blowing port at the bottom of the first air-blowing seat is connected to an air source through the air source connector. During the cleaning process, air can be blown onto the weld through the first air-blowing port to further remove residual foreign matter and improve the cleaning effect.

[0054] In one embodiment, the first transmission device 31 includes two first transmission frames arranged in parallel and spaced apart, with a first transmission belt module installed on each opposite side of the two first transmission frames. Two lifting and positioning mechanisms 33 are also arranged below the first transmission frames, one near the weld cleaning device 32 and the other near the sorting and unloading device 37. Two sets of lifting and positioning mechanisms 33 are provided. One set is located at the cleaning position to lift and position the battery top cover for cleaning by the weld cleaning device 32. The other set is located at the unloading position of the first transmission device 31, lifting the battery top cover for transfer by the shaping and conveying mechanism 363 or the sorting and unloading device 37. The structure of the lifting and positioning mechanism 33 is similar to that of the welding lifting mechanism 23 described above, and its working principle will not be elaborated here.

[0055] In addition, the sorting and unloading device 37 includes a sorting and transfer mechanism and a sorting bin arranged below the sorting and transfer mechanism. The sorting and transfer mechanism includes a unloading robot (including a Y-axis linear module, a Z-axis linear module, and a suction nozzle), which can transfer unqualified battery top covers to the sorting bin for unified recycling. The sorting bin adopts a drawer-type structure and is equipped with a guide shaft to facilitate the stacking of top covers.

[0056] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fully automatic welding machine for lithium battery explosion-proof sheets, characterized in that, The device includes a top cover feeding device, a laser welding device arranged at one end of the top cover feeding device, and a weld inspection device arranged at one end of the laser welding device. The top cover feeding device includes a top cover conveying mechanism, a top cover hopper mechanism arranged on one side of the top cover conveying mechanism, a top cover transfer mechanism arranged at one end of the top cover conveying mechanism, and a laser marking mechanism and a defective product transfer mechanism arranged on the other side of the top cover conveying mechanism. A first vision inspection mechanism and a second vision inspection mechanism are also arranged between the top cover conveying mechanism and the top cover hopper mechanism. The laser marking mechanism is located between the first vision inspection mechanism and the second vision inspection mechanism, and a top cover lifting mechanism is also arranged below the top cover conveying mechanism and corresponding to the laser marking mechanism. The defective product transfer mechanism is arranged near the other end of the top cover conveying mechanism, and a defective product hopper is also arranged on one side of the defective product transfer mechanism. A feeding and flipping mechanism is also arranged at the other end of the top cover conveying mechanism.

2. The fully automatic welding machine for lithium battery explosion-proof sheets according to claim 1, characterized in that, The feeding and tilting mechanism includes two feeding uprights arranged opposite each other, and a tilting and lifting cylinder is installed on one side of each feeding upright; each tilting and lifting cylinder drives and connects to a tilting vertical plate, and a tilting rod is rotatably connected between the two tilting vertical plates; a tilting transfer plate is connected to the tilting rod, and a tilting suction cup is also installed on the tilting transfer plate; a tilting drive mechanism connected to the tilting rod is also installed on one of the tilting vertical plates; the tilting drive mechanism includes a tilting motor installed on the tilting vertical plate, a first driving wheel connected to the output shaft of the tilting motor, a first driven wheel installed on the tilting rod, and a first synchronous belt wound between the first driving wheel and the first driven wheel.

3. The fully automatic welding machine for lithium battery explosion-proof sheets according to claim 2, characterized in that, The laser welding device includes a welding transmission device, a laser welding mechanism arranged on one side of the welding transmission device, a welding lifting mechanism arranged below the welding transmission device, and a welding unloading mechanism arranged at one end of the welding transmission device; a third vision inspection mechanism is also arranged on one side of the welding transmission device, and a welding loading mechanism is also arranged on the other side of the welding transmission device.

4. The fully automatic welding machine for lithium battery explosion-proof sheets according to claim 3, characterized in that, The welding loading mechanism includes a transfer loading mechanism, a first hopper mechanism arranged at one end of the transfer loading mechanism, and a loading and transfer mechanism arranged on one side of the transfer loading mechanism. The first hopper mechanism includes a hopper mounting frame, a tray plate slidably connected to the top of the hopper mounting frame, and a first bearing box installed on the top of the tray plate. The top of the first bearing box is provided with a first bearing groove for bearing explosion-proof sheets. One end of the tray plate is connected to a first panel, and one side of the first panel is provided with a first handle. A first positioning cylinder is installed vertically at the bottom end of the hopper mounting frame away from the first panel, and the first positioning cylinder is also driven by a first positioning rod. A positioning insertion hole is also provided at the top end of the tray plate corresponding to the first positioning rod. A first stop block is also connected at the top end of the hopper mounting frame away from the first panel, and a first limit block is also connected at the bottom end of the tray plate away from the first panel corresponding to the first stop block.

5. The fully automatic welding machine for lithium battery explosion-proof sheets according to claim 4, characterized in that, The loading and transfer mechanism includes a transfer fixing frame arranged on one side of the central transfer mechanism, and a double-acting linear module mounted on the transfer fixing frame; the double-acting linear module is arranged along the length direction of the central transfer mechanism, and the two actuators of the double-acting linear module are respectively connected to a loading and transfer module; the loading and transfer module includes a transfer sliding frame connected to the double-acting linear module, a transfer linear module mounted on the transfer sliding frame perpendicular to the length direction of the double-acting linear module, and a first Z-axis lifting module connected to the second linear module; the first Z-axis lifting module is also driven and connected to a Z-axis lifting vertical plate, and the bottom of the Z-axis lifting vertical plate is also connected to a Z-axis lifting horizontal plate; the Z-axis lifting... A loading and transfer assembly is also installed on the horizontal plate; the loading and transfer assembly includes an R-axis rotary motor installed vertically on the Z-axis lifting horizontal plate, and the two ends of the motor shaft of the R-axis rotary motor pass through the top and bottom of the R-axis rotary motor respectively; the motor shaft of the R-axis rotary motor has an axially hollow structure, and a first transfer suction cup is installed at the bottom of the motor shaft, and a transfer air source connector is installed at the top of the motor shaft; a rotating disk is also installed on the upper part of the motor shaft of the R-axis rotary motor, and an R-axis sensing plate is connected to the top of the rotating disk; a sensing fixing plate is also connected to one side of the Z-axis lifting vertical plate, and a U-shaped photoelectric sensor that works in conjunction with the R-axis sensing plate is installed at the bottom of the sensing fixing plate.

6. The fully automatic welding machine for lithium battery explosion-proof sheets according to claim 3, characterized in that, Above the welding transfer device, corresponding to the welding lifting mechanism, a top-leveling positioning mechanism is also arranged; the laser welding mechanism includes a welding fixing frame arranged on one side of the welding transfer device, a welding X-axis translation mechanism arranged on top of the welding fixing frame along the transmission direction of the welding transfer device, a welding Y-axis translation mechanism connected to the welding X-axis translation mechanism, a welding translation frame connected to the welding Y-axis translation mechanism, and a welding Z-axis lifting mechanism installed at one end of the welding translation frame; the welding Z-axis lifting mechanism is also driven and connected to a welding lifting plate, and a laser welding head is also installed on one side of the welding lifting plate; the output end of the laser welding head is also fitted with a first dust extraction hood, and a first dust extraction pipe is also installed on the first dust extraction hood; a dust extraction adapter pipe connected to the first dust extraction pipe is also installed on one side of the welding translation frame; the top of the welding transfer device is also connected to two first protective covers, which are arranged opposite to each other, and the top-leveling positioning mechanism is located between the two first protective covers.

7. The fully automatic welding machine for lithium battery explosion-proof sheets according to claim 6, characterized in that, The welding transfer device includes two welding transfer frames arranged in parallel and spaced apart, with a conveyor belt mechanism installed on each opposite side of the two welding transfer frames; the welding lifting mechanism includes a lifting base plate, a first lifting cylinder mounted on the top of the lifting base plate, a first lifting plate connected to the first lifting cylinder, a first support column connected to the middle of the top of the first lifting plate, and a second lifting plate arranged perpendicular to the length direction of the first lifting plate and connected to the first support column; a first clamping mechanism is installed on the first lifting plate along its length direction, and the first clamping mechanism also drives two first sliding plates; a first clamping plate is connected vertically to the top of each first sliding plate, and a first clamping block is also connected to the top of the first clamping plate; a second clamping machine is installed on the second lifting plate along its length direction. The structure includes a second clamping mechanism that drives and connects two second sliding plates; each second sliding plate has a second clamping plate connected to its top in the vertical direction; an adsorption mounting plate is connected to the second lifting plate and is located between the two second sliding plates; a third Z-axis cylinder is installed on the top of the adsorption mounting plate and drives and connects to a first adsorption seat; a first vacuum suction cup is installed on the top of the first adsorption seat; a first bracket is arranged on one side of each welding transfer frame; the top-flat positioning mechanism includes a top-flat connecting plate connected between the tops of the two first brackets and a top-flat pressure plate connected to the bottom of the top-flat connecting plate; a contoured card hole is opened on the top of the top-flat pressure plate; a first guide block is provided at each end of the top-flat pressure plate and a second guide block is provided on each side of the top-flat pressure plate.

8. The fully automatic welding machine for lithium battery explosion-proof sheets according to claim 1, characterized in that, The weld inspection device includes a first transmission device, a weld cleaning device arranged on one side of the first transmission device, a fourth vision inspection mechanism arranged on the other side of the first transmission device, and a pressing and shaping device arranged at one end of the first transmission device; a sorting and unloading device is also arranged on one side of the first transmission device near the pressing and shaping device; the pressing and shaping device includes a shaping fixing frame, a shaping platform installed in the shaping fixing frame, a shaping transport mechanism installed on one side of the shaping fixing frame, and a shaping pressing mechanism installed on the top of the shaping fixing frame and above the shaping platform; a shaping fixture for carrying the product is also installed on the shaping platform.

9. The fully automatic welding machine for lithium battery explosion-proof sheets according to claim 8, characterized in that, The shaping and transporting mechanism includes a shaping Z-axis lifting mechanism connected to one side of the shaping fixed frame, a shaping X-axis translation mechanism connected to the shaping Z-axis lifting mechanism, and a shaping translation frame connected to the shaping X-axis translation mechanism; a shaping transporting module is connected to each end of one side of the shaping translation frame; the shaping transporting module includes a shaping connecting seat connected to one side of the shaping translation frame, and a shaping transporting rod is connected to each end of the bottom of the shaping connecting seat; a plurality of first suction nozzles are installed at intervals along the length of the bottom of the shaping transporting rod, and a shaping air source connector communicating with the first suction nozzles is also installed at the top of the shaping transporting rod; the shaping fixed frame includes a shaping base plate; a shaping vertical plate is connected to each end of the top of the shaping base plate, and a shaping horizontal plate is connected between the tops of the two shaping vertical plates; the shaping Z-axis lifting mechanism is installed on one side of one of the shaping vertical plates, the shaping platform is arranged on the shaping base plate, and the shaping pressing mechanism is installed on the shaping horizontal plate; The shaping and pressing mechanism includes a shaping and pressing electric cylinder mounted on the shaping horizontal plate, and a pressing fixing plate connected to the shaping and pressing electric cylinder and located above the shaping platform; an upper adjusting block is connected to each of the bottom two sides of the pressing fixing plate, and several upper adjusting blocks are installed at intervals along the bottom length direction of the upper adjusting blocks; a shaping pressing block is connected to the bottom of the upper adjusting block; a shaping fixture is installed on each of the top two sides of the shaping platform; the shaping fixture includes two width limiting strips arranged along the length direction of the shaping platform, and two length limiting strips arranged along the length direction of the shaping platform; the two width limiting strips are arranged in parallel and spaced apart, and the two length limiting strips are respectively arranged at one end between the two width limiting strips; a width adjusting block is slidably connected to each of the top two ends of the width limiting strip, and a first limiting wheel is also installed on one side of the width adjusting block perpendicular to the length direction of the shaping platform; a length adjusting block is slidably connected to the top of each of the length limiting strips, and a second limiting wheel is installed on one side of the length adjusting block along the length direction of the shaping platform.

10. The fully automatic welding machine for lithium battery explosion-proof sheets according to claim 8, characterized in that, The weld bead cleaning device includes a cleaning frame, a cleaning translation cylinder mounted on the upper side of one side of the cleaning frame, a first Z-axis cylinder connected to the cleaning translation cylinder, a second Z-axis cylinder connected to the first Z-axis cylinder, and a cleaning lifting seat connected to the second Z-axis cylinder. The cleaning lifting seat is also equipped with a cleaning rotation mechanism, which drives a cleaning brush. A cleaning dust extraction hood is connected to the bottom of the cleaning lifting seat, and a dust extraction pipe is installed at one end of the dust extraction hood. An air-blowing cleaning component is installed at the other end of the dust extraction hood. The weld bead cleaning device also includes a first movable plate and a second movable plate. A first linear guide is arranged at the bottom of the cleaning lifting seat, and the first movable plate... The first movable plate is slidably arranged on the first linear rail; a second linear rail is also arranged at the bottom of the first movable plate in a direction perpendicular to the first linear rail, and the second movable plate is slidably arranged on the second linear rail; a first bearing is also installed in the middle of the top of the second movable plate, and a first through hole is also opened on the first movable plate corresponding to the first bearing; the cleaning rotation mechanism includes a cleaning rotation motor installed on the cleaning lifting seat, and the output shaft of the cleaning rotation motor is also connected to a cleaning rotation rod; the lower part of the cleaning rotation rod is arranged through the first through hole, and an eccentric wheel is also connected to the bottom of the cleaning rotation rod; the eccentric wheel is connected to the first bearing; a brush fixing block is also connected to the bottom of the second movable plate, and the cleaning brush is installed on the bottom of the brush fixing block.

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