Laser welding device for lithium battery explosion-proof sheet

Abstract

The utility model discloses a laser welding device of lithium battery explosion -proof piece, including welding transmission device, the laser welding mechanism of arrangement in the one side of welding transmission device, the welding jacking -up mechanism of arrangement below welding transmission device and the welding blanking mechanism of arrangement in the one end of welding transmission device, one side of welding transmission device still be provided with first visual inspection mechanism, and the other side of welding transmission device still be provided with welding feeding mechanism, the welding feeding mechanism includes feeding fixed frame, installs on the feeding Y axis linear module of feeding fixed frame, and the feeding X axis linear module of feeding Y axis linear module connection, and the feeding Z axis lifting module of feeding X axis linear module connection, the utility model discloses can realize the automation of explosion -proof piece, laser welding and a series of processes such as blanking, and the automation degree is high, and the work efficiency is high, and the practicality is strong.

Description

Technical Field

[0001] This utility model relates to the field of automation technology, and in particular to a laser welding device 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. Utility Model Content

[0003] The purpose of this utility model is to provide a laser welding device for lithium battery explosion-proof sheets. Through the cooperation of a welding transmission device, a welding feeding mechanism, a welding unloading mechanism, a welding lifting mechanism, and a laser welding mechanism, a series of processes such as automated feeding, laser welding, and unloading of explosion-proof sheets can be realized. It has a high degree of automation, high work efficiency, and strong practicality. To achieve the above objectives, the following technical solution is adopted: A laser welding device for lithium battery explosion-proof sheets 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 first visual inspection mechanism is also arranged on one side of the welding transmission device, and a welding loading mechanism is arranged on the other side of the welding transmission device. The welding loading mechanism includes a loading fixing frame, a loading Y-axis linear module mounted on the loading fixing frame, a loading X-axis linear module connected to the loading Y-axis linear module, and a loading Z-axis lifting module connected to the loading X-axis linear module. The loading Z-axis lifting module is also driven and connected to a Z-axis lifting vertical plate, and a Z-axis lifting horizontal plate is connected to the bottom of the Z-axis lifting vertical plate. A loading transfer component is also installed on the Z-axis lifting horizontal plate.

[0004] Furthermore, the loading and transfer assembly includes an R-axis rotary motor mounted vertically on the Z-axis lifting plate, with both ends of the motor shaft of the R-axis rotary motor passing 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 first air source connector is installed at the top of the motor shaft.

[0005] 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.

[0006] 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 installed 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 and connects two first sliding plates; a first clamping plate is connected to the top of each first sliding plate along the vertical direction, and a first clamping block is also connected to the top of the first clamping plate; a second clamping mechanism is installed on the second lifting plate along its length direction, and the second clamping mechanism also drives and connects two second sliding plates; a second clamping plate is also connected to the top of each second sliding plate along the vertical direction.

[0007] Furthermore, the second lifting plate is also connected to an adsorption mounting plate, which is located between two second sliding plates; a third Z-axis cylinder is also installed on the top of the adsorption mounting plate, and the third Z-axis cylinder is also connected to a first adsorption seat; a first vacuum suction cup is also installed on the top of the first adsorption seat.

[0008] Furthermore, a first support 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 supports, and a top flat pressure plate connected to the bottom of the top flat connecting plate; the top of the top flat pressure plate is provided with a contoured card hole; the top two ends of the top flat pressure plate are provided with a first guide block, and the two sides of the top flat pressure plate are provided with a second guide block.

[0009] Furthermore, the welding unloading mechanism includes a welding unloading frame, an unloading X-axis linear module mounted on the welding unloading frame, an unloading lifting cylinder connected to the unloading X-axis linear module, and an unloading transfer frame connected to the unloading lifting cylinder; the unloading transfer frame is also equipped with an unloading transfer plate, and the unloading transfer plate is also equipped with an unloading transfer suction cup.

[0010] Furthermore, a first mounting groove is opened at each of the top two ends of the material transfer plate, and a first through hole is also opened in the first mounting groove; an air passage fixing block is also installed in the first mounting groove, the material transfer suction cup is installed on the air passage fixing block, and the lower part of the material transfer suction cup is arranged through the first through hole.

[0011] Furthermore, the welding blanking mechanism also includes a blanking pressing assembly; the blanking pressing assembly includes a blanking clamping block and a blanking pressing column; the blanking clamping block is installed in a first mounting groove, the lower part of the blanking pressing column passes through a first through hole, and the upper part of the blanking pressing column moves through the blanking clamping block; the top of the blanking pressing column is provided with a first limiting step, and the bottom of the blanking pressing column is also provided with a second limiting step; a first spring is also sleeved on the blanking pressing column, and the first spring is located between the top of the second limiting step and the bottom of the blanking clamping block.

[0012] Furthermore, a lower vision inspection mechanism is also arranged between the welding transfer device and the welding feeding mechanism.

[0013] By adopting the above solution, the beneficial effects of this utility model are: This utility model, through the cooperation of a welding transmission device, a welding feeding mechanism, a welding unloading mechanism, a welding lifting mechanism, and a laser welding mechanism, can realize a series of processes such as automated feeding, laser welding, and unloading of explosion-proof sheets. It has a high degree of automation, high work efficiency, and strong practicality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the welding transfer device, laser welding mechanism, and welding lifting mechanism of this utility model; Figure 3 This is a schematic diagram of the top-flat positioning mechanism of this utility model; Figure 4 This is a schematic diagram of the top flat pressure plate of this utility model; Figure 5 This is a schematic diagram of the laser welding mechanism of this utility model; Figure 6 This is a schematic diagram of the welding feeding mechanism of this utility model; Figure 7This is a schematic diagram of the welding lifting mechanism of this utility model; Figure 8 This is a schematic diagram of the welding and unloading mechanism of this utility model; Figure 9 This is a partial structural schematic diagram of the welding and unloading mechanism of this utility model; The following are explanations of the labels in the attached diagram: 1. Welding transfer device; 2. Laser welding mechanism; 3. Welding lifting mechanism; 4. Top-level positioning mechanism; 5. Welding unloading mechanism; 6. First vision inspection mechanism; 7. Lower vision inspection mechanism; 8. Welding loading mechanism; 21. Welding fixing frame; 22. Welding X-axis translation mechanism; 23. Welding Y-axis translation mechanism; 24. Welding translation frame; 25. Welding Z-axis lifting mechanism; 26. Welding lifting plate; 27. Laser welding head; 31. Second clamping plate; 32. First lifting cylinder; 33. First lifting plate; 34. Second lifting plate; 35. First clamping mechanism; 36. First sliding plate; 37. First clamping plate; 38. First clamping block; 39. Second clamping mechanism; 30. Second sliding plate; 41. Top-level connecting plate; 42. Top-level pressure plate; 43. Contouring locator; 44. First guide block; 45. Second guide block; 46. ​​Third guide block; 51. Welding unloading rack; 52. Unloading X-axis linear module; 53. Unloading lifting cylinder; 54. Unloading transfer rack; 55. Unloading transfer plate; 56. Unloading transfer suction cup; 57. Air circuit fixing block; 58. Unloading clamping block; 59. First spring; 81. Loading fixing rack; 82. Loading Y-axis linear module; 83. Loading X-axis linear module; 84. Loading Z-axis lifting module; 85. 86. Z-axis lifting vertical plate; 87. Z-axis lifting horizontal plate; 88. Loading and transfer assembly; 271. First dust extraction hood; 272. First dust extraction pipe; 273. Dust extraction adapter pipe; 274. First protective cover; 341. Adsorption mounting plate; 342. Third Z-axis cylinder; 343. First adsorption seat; 344. First vacuum suction cup; 871. R-axis rotary motor; 872. First transfer suction cup; 873. First air source connector. Detailed Implementation

[0015] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0016] Reference Figures 1 to 9As shown, this utility model provides a laser welding device for lithium battery explosion-proof sheets. In one embodiment, it includes a welding transmission device 1, a laser welding mechanism 2 arranged on one side of the welding transmission device 1, a welding lifting mechanism 3 arranged below the welding transmission device 1, and a welding unloading mechanism 5 arranged at one end of the welding transmission device 1. A first visual inspection mechanism 6 is also arranged on one side of the welding transmission device 1, and a welding loading mechanism 8 is also arranged on the other side of the welding transmission device 1. The welding loading mechanism 8 includes a loading fixing frame 81 and a loading fixing frame 82. The frame 81 includes a Y-axis linear loading module 82, an X-axis linear loading module 83 connected to the Y-axis linear loading module 82, and a Z-axis lifting module 84 connected to the X-axis linear loading module 83 (two Z-axis lifting modules 84 are provided, which can transfer two explosion-proof plates at one time, improving work efficiency); the Z-axis lifting module 84 is also driven and connected to a Z-axis lifting vertical plate 85, and the bottom of the Z-axis lifting vertical plate 85 is also connected to a Z-axis lifting horizontal plate 86; a loading transfer assembly 87 is also installed on the Z-axis lifting horizontal plate 86.

[0017] In this embodiment, a lower vision inspection mechanism 7 is also arranged between the welding transfer device 1 and the welding loading mechanism 8. A top-leveling positioning mechanism 4 is also arranged above the welding transfer device 1 corresponding to the welding lifting mechanism 3. Both the first vision inspection mechanism 6 and the lower vision inspection mechanism 7 include an industrial camera and a light source. The welding transfer device 1 connects to the upstream transmission line to receive the battery top cover. The welding loading mechanism 8 is used to transfer explosion-proof sheets from the explosion-proof sheet hopper, first transferring them to the lower vision inspection mechanism 7 for lower positioning. The first vision inspection mechanism 6 positions the corresponding assembly holes of the battery top cover. Subsequently, the welding loading mechanism 8 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 1. The first lifting mechanism is located at the... Below the visual inspection mechanism 6, the battery top cover is lifted to facilitate the assembly of the explosion-proof sheet by the welding feeding mechanism 8. The structure of the first lifting mechanism is similar to that of the welding lifting mechanism 3, and its working principle can be referred to the discussion of the welding lifting mechanism 3 below, which will not be repeated here. After the explosion-proof sheet is assembled, the welding transmission device 1 transfers the battery top cover to the welding lifting mechanism 3. The welding lifting mechanism 3 lifts the battery top cover upward to the top leveling and positioning mechanism 4. 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 2 welds the explosion-proof sheet. After the welding is completed, the welding lifting mechanism 3 puts the top cover back onto the welding transmission device 1, which then transfers it to the welding unloading mechanism 5. The welding unloading mechanism 5 transfers it to the next process.

[0018] Preferably, in this embodiment, the loading and transfer assembly 87 includes an R-axis rotary motor 871 mounted vertically on the Z-axis lifting plate 86, with both ends of the motor shaft of the R-axis rotary motor 871 passing through the top and bottom of the motor 871, respectively. The motor shaft of the R-axis rotary motor 871 has an axially hollow structure, and a first transfer suction cup 872 is installed at the bottom of the motor shaft, while a first air source connector 873 is installed at the top of the motor shaft. The axially hollow structure of the motor shaft and the first air source connector 873 at the top of the motor shaft are 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 871 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. Furthermore, preferably, a rotating disk is also mounted on the upper part of the motor shaft of the R-axis rotary motor 871, 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 85, and a U-shaped photoelectric sensor that works in conjunction with the R-axis sensing plate is also mounted on the bottom of the sensing fixing plate. Through the cooperation of the R-axis sensing plate and the U-shaped photoelectric sensor, the position of the rotating disk can be detected, thereby facilitating the control of the R-axis rotary motor 871.

[0019] In one embodiment, the laser welding mechanism 2 includes a welding fixture 21 arranged on one side of the welding transmission device 1, a welding X-axis translation mechanism 22 arranged on top of the welding fixture 21 along the transmission direction of the welding transmission device 1, a welding Y-axis translation mechanism 23 connected to the welding X-axis translation mechanism 22, a welding translation frame 24 connected to the welding Y-axis translation mechanism 23, and a welding Z-axis lifting mechanism 25 installed at one end of the welding translation frame 24; the welding Z-axis lifting mechanism 25 also drives a welding lifting plate 26. Furthermore, a laser welding head 27 is installed on one side of the welding lifting plate 26; a first dust extraction hood 271 is fitted onto the output end of the laser welding head 27, and a first dust extraction pipe 272 is installed on the first dust extraction hood 271; a dust extraction adapter pipe 273 connected to the first dust extraction pipe 272 is also installed on one side of the welding translation frame 24; two first protective covers 274 are connected to the top of the welding transmission device 1, the two first protective covers 274 are arranged opposite to each other, and the top flat positioning mechanism 4 is located between the two first protective covers 274.

[0020] In this embodiment, the welding X-axis translation mechanism 22, the welding Y-axis translation mechanism 23, and the welding Z-axis lifting mechanism 25 can all use existing linear modules. With the cooperation of the three, the laser welding head 27 (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 27. At the same time, the output end of the laser welding head 27 is also equipped with a first dust extraction hood 271, which can be connected to a dust collector through the first dust extraction pipe 272 and the dust extraction adapter pipe 273 to promptly extract the dust and harmful gases generated during the welding process, reduce their diffusion in the working environment, and effectively protect the health of the operators. To improve the dust extraction efficiency, the first dust extraction pipe 272 is provided in two sets. In addition, two first protective covers 274 are also provided to prevent dust and foreign objects generated during the welding process from splashing to the outside.

[0021] In one embodiment, the welding transfer device 1 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 3 includes a lifting base plate, a first lifting cylinder 32 installed on the top of the lifting base plate, a first lifting plate 33 connected to the first lifting cylinder 32, a first support column connected to the middle of the top of the first lifting plate 33, and a second lifting plate 34 arranged perpendicular to the length direction of the first lifting plate 33 and connected to the first support column; the first lifting plate A first clamping mechanism 35 is installed on the second lifting plate 34 along its length, and the first clamping mechanism 35 is also driven to connect two first sliding plates 36; a first clamping plate 37 is connected to the top of each first sliding plate 36 along the vertical direction, and a first clamping block 38 is also connected to the top of the first clamping plate 37; a second clamping mechanism 39 is installed on the second lifting plate 34 along its length, and the second clamping mechanism 39 is also driven to connect two second sliding plates 30; a second clamping plate 31 is also connected to the top of each second sliding plate 30 along the vertical direction.

[0022] In this embodiment, the welding transfer device 1 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, thus adapting to the transfer of battery top covers of different types and sizes, and has strong versatility. The first clamping mechanism 35 and the second clamping mechanism 39 both adopt the method of motor-driven synchronous belt. The two first sliding plates 36 are respectively connected to one side of a synchronous belt, and the two second sliding plates 30 are respectively connected to one side of another synchronous belt. The first lifting cylinder 32 can drive the first lifting plate 33 to drive the second lifting plate 34 to rise, so as to lift the battery top cover. The first sliding plate 36 can be driven to move closer together, so that the two ends of the battery top cover can be clamped and limited by the first clamping block 38. The second clamping mechanism 39 can drive the two second sliding plates 30 to move closer together, so that the two sides of the battery top cover can be clamped and limited by the second clamping plate 31. Through the cooperation of the two, the battery top cover can be centered and positioned. At the same time, in order to improve work efficiency, two first clamping plates 37 are connected to the first sliding plate 36, and two second clamping plates 31 are connected to the second sliding plate 30. Two stop bars are also connected in the middle of the second lifting plate 34. In addition, two sets of third Z-axis cylinders 342 are also provided, with one third Z-axis cylinder 342 arranged between each second sliding plate 30 and the stop bar. In this way, two products can be clamped and positioned at one time, improving work efficiency.

[0023] Meanwhile, an adsorption mounting plate 341 is also connected to the second lifting plate 34, and the adsorption mounting plate 341 is located between the two second sliding plates 30; a third Z-axis cylinder 342 is also installed on the top of the adsorption mounting plate 341, and the third Z-axis cylinder 342 is also connected to the first adsorption seat 343; a first vacuum suction cup 344 is also installed on the top of the first adsorption seat 343. The first vacuum suction cup 344 on the top of the first adsorption seat 343 can adsorb the battery top cover, ensuring its stable placement during the lifting process.

[0024] In one embodiment, a first support is arranged on one side of each welding transfer frame; the top flat positioning mechanism 4 includes a top flat connecting plate 41 connected between the tops of the two first supports, and a top flat pressure plate 42 connected to the bottom of the top flat connecting plate 41; the top of the top flat pressure plate 42 is provided with a contoured card hole 43; the top two ends of the top flat pressure plate 42 are each provided with a first guide block 44, and the two sides of the top flat pressure plate 42 are each provided with a second guide block 45.

[0025] The welding lifting mechanism 3 can lift the battery top cover to the top flat pressure plate 42, thereby achieving Z-axis positioning. The top flat pressure plate 42 has a contoured locking hole 43 corresponding to the explosion-proof sheet, which facilitates the laser welding mechanism 2 to weld it. After the welding lifting mechanism 3 lifts the top cover and centers it, it will drive the first clamping plate 37 and the second clamping plate 31 away from the top cover. The top cover will continue to be lifted to the bottom of the top flat pressure plate 42. The first guide block 44 and the second guide block 45 at the bottom of the top flat pressure plate 42 will limit and fix it to ensure that it is placed stably during welding.

[0026] Preferably, the top flat pressure plate 42 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 44 has an L-shaped structure, with its L-shaped horizontal end connected to the top of the top flat pressure plate 42 and its L-shaped vertical end extending downward after passing through the first locking hole; the second guide block 45 has an L-shaped structure, with its L-shaped horizontal end connected to the top of the top flat pressure plate 42 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 44 and the lower part of one side of the L-shaped vertical end of the second guide block 45 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 44 and the second guide block 45. Furthermore, the bottom center of the top flat pressure plate 42 is equipped with two third guide blocks 46, each corresponding to a second guide block 45. The third guide blocks 46 have a similar structure to the first and second guide blocks 44 and 45. 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.

[0027] In one embodiment, the welding unloading mechanism 5 includes a welding unloading frame 51, an unloading X-axis linear module 52 mounted on the welding unloading frame 51, an unloading lifting cylinder 53 connected to the unloading X-axis linear module 52, and an unloading transfer frame 54 connected to the unloading lifting cylinder 53. An unloading transfer plate 55 is also mounted on the unloading transfer frame 54, and an unloading transfer suction cup 56 is also mounted on the unloading transfer plate 55. The unloading X-axis linear module 52 uses a translation cylinder. With the cooperation of the unloading X-axis linear module 52 and the unloading lifting cylinder 53, the unloading transfer plate 55 can be driven to perform translational and lifting movements so that the unloading transfer suction cup 56 can transfer the battery top cover.

[0028] Preferably, a first mounting groove is formed at each of the top two ends of the unloading transfer plate 55, and a first through hole is also formed in the first mounting groove; an air passage fixing block 57 is also installed in the first mounting groove, and the unloading transfer suction cup 56 is installed on the air passage fixing block 57, with the lower part of the unloading transfer suction cup 56 passing through the first through hole. The air passage fixing block 57 is provided with screw holes, allowing the position of the air passage fixing block 57 to be adjusted according to the actual usage environment, and then screws can be tightened into the screw holes.

[0029] In addition, the welding unloading mechanism 5 also includes an unloading and pressing assembly; the unloading and pressing assembly includes an unloading clamping block 58 and an unloading pressing column; the unloading clamping block 58 is installed in the first mounting groove, the lower part of the unloading pressing column passes through the first through hole, and the upper part of the unloading pressing column moves through the unloading clamping block 58; 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 59 is also sleeved on the unloading pressing column, and the first spring 59 is located between the top of the second limiting step and the bottom of the unloading clamping block 58. 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 56 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.

[0030] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A laser welding device for lithium battery explosion-proof sheets, characterized in that, The system includes a welding transfer device, a laser welding mechanism arranged on one side of the welding transfer device, a welding lifting mechanism arranged below the welding transfer device, and a welding unloading mechanism arranged at one end of the welding transfer device. A first vision inspection mechanism is also arranged on one side of the welding transfer device, and a welding loading mechanism is arranged on the other side of the welding transfer device. The welding loading mechanism includes a loading fixing frame, a loading Y-axis linear module mounted on the loading fixing frame, a loading X-axis linear module connected to the loading Y-axis linear module, and a loading Z-axis lifting module connected to the loading X-axis linear module. The loading Z-axis lifting module is also driven and connected to a Z-axis lifting vertical plate, and a Z-axis lifting horizontal plate is also connected to the bottom of the Z-axis lifting vertical plate. A loading transfer component is also installed on the Z-axis lifting horizontal plate.

2. The laser welding apparatus for lithium battery explosion-proof sheets according to claim 1, characterized in that, The loading and transfer assembly includes an R-axis rotary motor mounted vertically on the Z-axis lifting plate, with both ends of the motor shaft passing 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 first air source connector is installed at the top of the motor shaft.

3. The laser welding device for lithium battery explosion-proof sheets according to claim 1, 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.

4. The laser welding apparatus for lithium battery explosion-proof sheets according to claim 3, 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 installed 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 and connects two first sliding plates; a first clamping plate is connected to the top of each first sliding plate along the vertical direction, and a first clamping block is also connected to the top of the first clamping plate; a second clamping mechanism is installed on the second lifting plate along its length direction, and the second clamping mechanism also drives and connects two second sliding plates; a second clamping plate is also connected to the top of each second sliding plate along the vertical direction.

5. The laser welding apparatus for lithium battery explosion-proof sheets according to claim 4, characterized in that, The second lifting plate is also connected to an adsorption mounting plate, which is located between two second sliding plates; a third Z-axis cylinder is also installed on the top of the adsorption mounting plate, and the third Z-axis cylinder is also connected to a first adsorption seat; a first vacuum suction cup is also installed on the top of the first adsorption seat.

6. The laser welding apparatus for lithium battery explosion-proof sheets according to claim 5, characterized in that, Each welding transfer frame has a first support on one side; the top flat positioning mechanism includes a top flat connecting plate connected between the tops of the two first supports, 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; the top two ends of the top flat pressure plate are each provided with a first guide block, and the two sides of the top flat pressure plate are each provided with a second guide block.

7. The laser welding apparatus for lithium battery explosion-proof sheets according to claim 1, characterized in that, The welding unloading mechanism includes a welding unloading frame, an unloading X-axis linear module mounted on the welding unloading frame, an unloading lifting cylinder connected to the unloading X-axis linear module, and an unloading transfer frame connected to the unloading lifting cylinder; the unloading transfer frame is also equipped with an unloading transfer plate, and the unloading transfer plate is also equipped with an unloading transfer suction cup.

8. The laser welding apparatus for lithium battery explosion-proof sheets according to claim 7, characterized in that, The top two ends of the feeding and transfer plate are each provided with a first mounting groove, and a first through hole is also provided in the first mounting groove; an air passage fixing block is also installed in the first mounting groove, the feeding and transfer suction cup is installed on the air passage fixing block, and the lower part of the feeding and transfer suction cup is arranged through the first through hole.

9. The laser welding apparatus for lithium battery explosion-proof sheets according to claim 8, characterized in that, The welding unloading mechanism further includes an unloading and pressing assembly; the unloading and pressing assembly includes an unloading clamping block and an unloading pressing column; the unloading clamping block is installed in a first mounting groove, the lower part of the unloading pressing column passes through a first through hole, and the upper part of the unloading pressing column moves through the unloading clamping block; 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 is also sleeved on the unloading pressing column, and the first spring is located between the top of the second limiting step and the bottom of the unloading clamping block.

10. The laser welding apparatus for lithium battery explosion-proof sheets according to claim 1, characterized in that, A lower vision inspection mechanism is also arranged between the welding transfer device and the welding feeding mechanism.

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