A laser welding machine for lithium battery production

Abstract

The present invention relates to the field of laser welding technology, and discloses a laser welding machine for lithium battery production, comprising a workbench, a drive assembly being provided on the workbench, and a roller clamping assembly being fixedly installed on the left side of the drive assembly. The present invention sets a locking gear in the middle of a roller, and when the slider moves backward, a push block is pushed to a side away from the workbench, and then the locking assembly is pulled away from the roller clamping assembly through a connecting assembly, so that the locking block is separated from the locking gear. At this time, the roller rolls backward on the surface of the lithium battery, and when the slider moves forward, the push block loses thrust. At this time, the elasticity of spring 1 drives the locking block to reset and get stuck on the locking gear, and the roller cannot rotate. Then, when moving forward, the lithium battery can be directly driven to the welding position. During the whole process, the backward rolling of the roller is completed using the time required for welding, so that the next batch of lithium batteries can be directly pushed to the welding position after welding is completed, saving time and improving welding efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of laser welding, and more particularly to a laser welding machine for lithium battery production. Background Art

[0002] During the lithium battery production process, the electrodes of multiple batteries need to be connected, and laser welding is usually used for welding. When using existing laser welding machines, multiple batteries are usually placed on a table, and then a conductive plate is placed on the electrodes for laser welding. Each time welding is performed, multiple lithium batteries need to be placed on the table and arranged properly. After welding is completed, the welded batteries need to be removed before new batteries can be replaced. This takes a long time, affecting welding efficiency. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a laser welding machine for lithium battery production, which has the advantage of high welding efficiency.

[0004] To achieve the above objectives, the present invention provides the following technical solutions: A laser welding machine for lithium battery production, comprising a workbench, a drive assembly being provided on the workbench, a roller clamping assembly being fixedly mounted on the left side of the drive assembly, a locking assembly being provided in the middle of the drive assembly, a connecting assembly being fixedly mounted on the right side of the locking assembly, a moving assembly being connected to the workbench in a transmission manner, and a laser welding assembly being connected to the top end of the moving assembly in a transmission manner;

[0005] The driving assembly includes a slider, which is movably connected to the workbench, a rack is fixedly installed at the bottom end of the slider, a motor is fixedly installed at the bottom end of the workbench, and a driving gear is fixedly sleeved at the output end of the motor;

[0006] The roller clamp assembly includes a connecting plate, which is fixedly mounted on the top of the slider on one side close to the center of the workbench. The connecting plate is rotatably connected to a roller on the side close to the center of the workbench, and the middle of the roller is rotatably connected to a locking gear.

[0007] The locking assembly includes a movable plate, which is located on the side of the slider close to the center of the workbench, and a telescopic shaft and a spring are fixedly installed on the side of the movable plate close to the slider, and the other ends of the telescopic shaft and the spring are fixedly installed on the slider, and a locking block is fixedly installed on the other side of the movable plate;

[0008] The connecting assembly includes a fixed shaft, which is fixedly installed on the side of the movable plate close to the slider, and a positioning rail is fixedly installed on the other end of the fixed shaft. A supporting telescopic rod is fixedly installed between the positioning rail and the slider, and a positioning block is slidably connected to the side of the positioning rail away from the slider, and a push block is fixedly installed on the side of the positioning block away from the positioning rail.

[0009] As a preferred technical solution of the present invention, slide grooves are provided on both sides of the workbench, and the sliders are slidably connected in the slide grooves. There are two sliders in total, and the two sliders are symmetrically arranged about the center of the workbench.

[0010] As a preferred technical solution of the present invention, the driving gear is engaged with a rack, the rack and the driving gear are both located below the workbench, and the rack is located in the middle of the bottom end of the driving assembly.

[0011] As a preferred technical solution of the present invention, the spring is sleeved on the telescopic shaft, and the locking block is clamped on the roller.

[0012] As a preferred technical solution of the present invention, one end of the fixed shaft away from the center of the workbench passes through and extends to the side of the slider away from the locking gear, and the bottom end of the push block is an inclined surface.

[0013] As a preferred technical solution of the present invention, a pneumatic component is fixedly installed on the top surface of the workbench, and the pneumatic component includes a fixed tube, a one-way air inlet pipe is fixedly installed on the rear end of the fixed tube, a vertical tube is fixedly installed on the top end of the fixed tube, a switching box is fixedly installed in the middle of the vertical tube, and a movable shaft is movably connected to the front end of the fixed tube.

[0014] As a preferred technical solution of the present invention, the pneumatic component also includes an air supply pipe and a nozzle, the nozzle is fixedly installed on the rear side of the top end of the air supply pipe and is tilted downward, the air supply pipe is fixedly installed on the top end of the vertical pipe, the movable shaft is fixedly connected to the slider, and the push block is movably connected in the switching box.

[0015] As a preferred technical solution of the present invention, a pulling assembly is fixedly installed at the rear end of the slider, and the pulling assembly includes a fixed block, which is fixedly installed on the rear side of the slider, and a pulling plate is rotatably connected to the side of the fixed block close to the center of the workbench, and a spring 2 is fixedly installed between the pulling plate and the spring 2.

[0016] As a preferred technical solution of the present invention, an alignment component is fixedly installed on the top of the workbench, and the alignment component includes a fixed bar, which is fixedly installed on the workbench and located on the rear side of the slider, and a spring three is fixedly installed on the front side of the fixed bar, and a moving bar is fixedly installed on the front end of the spring three. The alignment assembly also includes a limit block, which is fixedly installed on the workbench and located on the front side of the moving bar.

[0017] As a preferred technical solution of the present invention, the projections of the pulling plate and the moving bar on the fixed bar intersect, and the projections of the pulling plate and the limiting block on the fixed bar do not contact.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention provides a locking gear in the middle of the roller. During the backward movement of the slider, the push block is pushed to the side away from the workbench, and then the locking assembly is pulled away from the roller clamping assembly through the connecting assembly, so that the locking block is separated from the locking gear. At this time, the roller rolls backward on the surface of the lithium battery, and when the slider moves forward, the push block loses thrust. At this time, the elasticity of spring 1 drives the locking block to reset and get stuck on the locking gear, and the roller cannot rotate. Then, when moving forward, the lithium battery can be directly driven to the welding position. During the whole process, the time required for welding is used to complete the backward rolling of the roller, so that the next batch of lithium batteries can be directly pushed to the welding position after welding is completed, which saves time and improves welding efficiency.

[0020] 2. The present invention arranges a fixed tube and an air supply tube on the workbench. When the slider moves backward, it can drive the movable shaft to move backward in the fixed tube, thereby pushing the gas in the fixed tube into the vertical tube. The push block can be pushed by the inclined surface setting of the push block. After being pushed, the gas enters the air supply tube through the vertical tube and is sprayed backward on the surface of the lithium battery through the nozzle, thereby cleaning the dust and other impurities on the lithium battery electrodes and ensuring the welding quality.

[0021] 3. The present invention sets a rotatable pulling plate on the rear side of the slider. When the slider moves forward, the pulling plate is driven forward, and then the moving bar is pushed forward, so that the moving bar aligns the lithium battery in the front and rear directions. Since both ends of the lithium battery are in contact with the roller, the roller squeezes the lithium batteries against each other, so that the lithium batteries contact each other. At this time, the lithium batteries are sorted and clamped by the roller, thereby realizing automatic alignment of the lithium batteries and improving the accuracy of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the placement of the lithium battery of the present invention;

[0023] Figure 2 This is a schematic diagram of the connection of the workbench of the present invention;

[0024] Figure 3 For the present invention Figure 2 A in the middle is an enlarged schematic diagram;

[0025] Figure 4 This is a schematic diagram of the connection of the structural drive components of the present invention;

[0026] Figure 5 This is a schematic diagram of the explosive connection of the roller structure of the present invention;

[0027] Figure 6 For the present invention Figure 5 The enlarged schematic diagram of point B in the middle;

[0028] Figure 7 For the present invention Figure 5 Enlarged schematic diagram at point C in the middle;

[0029] Figure 8 This is a schematic diagram of the explosion connection of the structural positioning block of the present invention;

[0030] Figure 9 This is a schematic diagram of the locking gear connection structure of the present invention.

[0031] In the figure: 1. workbench; 2. drive assembly; 21. slider; 22. rack; 23. motor; 24. drive gear; 3. roller clamp assembly; 31. connecting plate; 32. roller; 33. locking gear; 4. locking assembly; 41. moving plate; 42. telescopic shaft; 43. spring one; 44. locking block; 5. connecting assembly; 51. fixed shaft; 52. positioning rail; 53. supporting telescopic rod; 54. positioning block; 55. pushing block; 6. pneumatic assembly; 61. fixed pipe; 62. one-way air inlet pipe; 63. vertical pipe; 64. switching box; 65. air supply pipe; 66. nozzle; 67. moving shaft; 7. pulling assembly; 71. fixed block; 72. pulling plate; 73. spring two; 8. alignment assembly; 81. fixed bar; 82. moving bar; 83. limit block; 84. spring three; 9. moving assembly; 10. laser welding assembly. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] like Figures 1 to 9 As shown, the present invention provides a laser welding machine for lithium battery production, comprising a workbench 1, a driving assembly 2 being provided on the workbench 1, a roller clamping assembly 3 being fixedly mounted on the left side of the driving assembly 2, a locking assembly 4 being provided in the middle of the driving assembly 2, a connecting assembly 5 being fixedly mounted on the right side of the locking assembly 4, a moving assembly 9 being transmission-connected to the workbench 1, and a laser welding assembly 10 being transmission-connected to the top end of the moving assembly 9;

[0034] The driving assembly 2 includes a slider 21, which is movably connected to the workbench 1. A rack 22 is fixedly installed at the bottom end of the slider 21. A motor 23 is fixedly installed at the bottom end of the workbench 1. A driving gear 24 is fixedly sleeved on the output end of the motor 23.

[0035] The roller clamp assembly 3 includes a connecting plate 31, which is fixedly mounted on the top of the slider 21 on one side close to the center of the workbench 1. The connecting plate 31 is rotatably connected to the side close to the center of the workbench 1 with a roller 32, and the middle of the roller 32 is rotatably connected to a locking gear 33.

[0036] The locking assembly 4 includes a movable plate 41, which is located on the side of the slider 21 close to the center of the workbench 1. A telescopic shaft 42 and a spring 1 43 are fixedly installed on the side of the movable plate 41 close to the slider 21. The other ends of the telescopic shaft 42 and the spring 1 43 are fixedly installed on the slider 21. A locking block 44 is fixedly installed on the other side of the movable plate 41.

[0037] The connecting assembly 5 includes a fixed shaft 51, which is fixedly mounted on the side of the movable plate 41 close to the slider 21. A positioning rail 52 is fixedly mounted on the other end of the fixed shaft 51. A supporting telescopic rod 53 is fixedly mounted between the positioning rail 52 and the slider 21. A positioning block 54 is slidably connected to the side of the positioning rail 52 away from the slider 21. A push block 55 is fixedly mounted on the side of the positioning block 54 away from the positioning rail 52.

[0038] When the slider 21 moves forward, the push block 55 loses its thrust, and the elasticity of the spring 1 43 drives the lock block 44 to reset and get stuck on the lock gear 33, and the roller 32 cannot rotate, and then when moving forward, the lithium battery can be directly driven to the welding position. During the whole process, the time required for welding is used to complete the backward rolling of the roller 32, so that the next batch of lithium batteries can be directly pushed to the welding position after welding is completed, saving time and improving welding efficiency. In addition, by setting the sliding connection between the positioning rail 52 and the positioning block 54, it can be satisfied that the push block 55 can still pull the locking assembly 4 to move during the movement of the slider 21.

[0039] Among them, the left and right sides of the workbench 1 are provided with a slide groove, and the slider 21 is slidably connected in the slide groove. There are two sliders 21, and the two sliders 21 are symmetrically arranged about the center of the workbench 1;

[0040] The accuracy of the movement of the slider 21 is ensured, and the symmetrically arranged slider 21 can ensure the centering operation of the lithium battery, thereby improving the welding accuracy.

[0041] The driving gear 24 is meshed with the rack 22 , and both the rack 22 and the driving gear 24 are located below the workbench 1 , with the rack 22 located in the middle of the bottom end of the driving assembly 2 ;

[0042] By starting or shutting down the motor 23, the drive gear 24 can be rotated as needed, and finally the slider 21 can be driven in a cycle of backward movement-stationary movement-forward movement. The backward movement process corresponds to the start of welding of the laser welding assembly 10, the stationary process corresponds to the welding in progress, and the forward movement process corresponds to the completion of welding and the loading process.

[0043] Among them, the spring 1 43 is sleeved on the telescopic shaft 42, and the locking block 44 is clamped on the roller 32;

[0044] The telescopic shaft 42 supports the movable plate 41 to prevent the movable plate 41 from falling. The spring 1 43 is responsible for resetting the movable plate 41, so that the push block 55 can block the switch box 64 after being free from the thrust.

[0045] Among them, the end of the fixed shaft 51 away from the center of the workbench 1 passes through and extends to the side of the slider 21 away from the locking gear 33, and the bottom end of the push block 55 is an inclined surface;

[0046] By setting the bottom surface of the push block 55 as a slope, when the gas in the fixed pipe 61 enters the switch box 64 through the vertical pipe 63, the gas can impact the slope and apply a rightward thrust to the push block 55 through the slope to open the vertical pipe 63.

[0047] Among them, the top surface of the workbench 1 is fixedly installed with a pneumatic component 6, which includes a fixed tube 61, a one-way air inlet pipe 62 fixedly installed at the rear end of the fixed tube 61, a vertical tube 63 fixedly installed at the top of the fixed tube 61, a switching box 64 fixedly installed at the middle of the vertical tube 63, and a movable shaft 67 movably connected to the front end of the fixed tube 61. The pneumatic component 6 also includes an air supply pipe 65 and a nozzle 66, the nozzle 66 is fixedly installed at the rear side of the top of the air supply pipe 65 and is arranged obliquely downward. The air supply pipe 65 is fixedly installed at the top of the vertical tube 63, the movable shaft 67 is fixedly connected to the slider 21, and the push block 55 is movably connected in the switching box 64;

[0048] By arranging a fixed tube 61 and an air supply tube 65 on the workbench 1, when the slider 21 moves backward, it can drive the movable shaft 67 to move backward in the fixed tube 61, and then push the gas in the fixed tube 61 into the vertical tube 63. The push block 55 can be pushed by the inclined surface setting of the push block 55. After being pushed, the gas enters the air supply tube 65 through the vertical tube 63 and is sprayed backward on the surface of the lithium battery through the nozzle 66, so as to clean the dust and other impurities on the lithium battery electrodes and ensure the welding quality.

[0049] The rear end of the slider 21 is fixedly mounted with a pulling assembly 7, which includes a fixed block 71, which is fixedly mounted on the rear side of the slider 21. A pulling plate 72 is rotatably connected to one side of the fixed block 71 close to the center of the workbench 1. A second spring 73 is fixedly mounted between the pulling plate 72 and the second spring 73.

[0050] When the locking gear 33 moves backward by the length of a lithium battery, the driving gear 24 stops rotating. During this process, the pulling plate 72 contacts the moving bar 82. Under the influence of the moving bar 82, the pulling plate 72 rotates forward, stretching the spring 2 73. When the pulling plate 72 is offset from the moving bar 82, the pulling plate 72 returns to a state perpendicular to the slider 21.

[0051] Among them, the top of the workbench 1 is fixedly installed with an alignment component 8, which includes a fixed bar 81, which is fixedly installed on the workbench 1 and located on the rear side of the slider 21, and a spring 3 84 is fixedly installed on the front side of the fixed bar 81. A moving bar 82 is fixedly installed on the front end of the spring 3 84. The alignment component 8 also includes a limit block 83, which is fixedly installed on the workbench 1 and located in front of the moving bar 82. The projections of the pulling plate 72 and the moving bar 82 on the fixed bar 81 intersect, and the projections of the pulling plate 72 and the limit block 83 on the fixed bar 81 do not contact;

[0052] The motor 23 drives the driving gear 24 to reverse, driving the slider 21 to move forward. In the process of the slider 21 moving forward, the pulling plate 72 is driven forward, and then the moving bar 82 is pushed forward, so that the moving bar 82 aligns the lithium battery in the front and rear directions. And because the left and right ends of the lithium battery are in contact with the roller 32, the roller 32 squeezes the lithium batteries against each other, so that the lithium batteries contact each other. When the moving bar 82 contacts the limit block 83, the moving bar 82 cannot continue to move forward. At this time, the pulling plate 72 rotates backward to compress the spring 2 73. When the pulling plate 72 is staggered with the moving bar 82, the pulling plate 72 returns to a state perpendicular to the slider 21. At this time, the lithium batteries are sorted and clamped by the roller 32.

[0053] The working principle and use process of the present invention:

[0054] When in use, the lithium battery to be welded is placed on the workbench 1, and the starting motor 23 drives the driving gear 24 to rotate. The driving gear 24 is engaged with the rack 22, and the rack 22 is driven to move backward. At this time, the rack 22 drives the movable shaft 67 to move backward in the fixed tube 61, and drives the locking gear 33 to move backward. The backward movement of the movable shaft 67 can push the gas in the fixed tube 61 into the vertical tube 63, thereby increasing the air pressure in the vertical tube 63, and pushing the push block 55 to the side away from the center of the workbench 1 through the inclined surface of the push block 55. The push block 55 is pushed away from the workbench 1, and the positioning block 54, the positioning rail 52 and the fixed shaft 51 are pulled away from the center of the workbench 1, and finally the locking assembly 4 is driven to move right, so that the locking block 44 is separated from the locking gear 33. At this time, the locking gear 33 moves backward on the left and right sides of the lithium battery in the form of a roll during the backward movement. After the push block 55 is pushed away, the gas in the vertical pipe 63 enters the nozzle 66 through the air supply pipe 65, and is sprayed backward on the surface of the unwelded lithium battery through the nozzle 66 to clean the electrodes of the lithium battery and avoid the presence of impurities such as dust.

[0055] When the locking gear 33 moves backward by the length of a lithium battery, the driving gear 24 stops rotating. During this process, the pulling plate 72 contacts the moving bar 82 and is affected by the moving bar 82. At this time, the spring 3 84 is at its shortest state, and the moving bar 82 cannot move backward. Therefore, the pulling plate 72 rotates forward, stretching the spring 2 73. When the pulling plate 72 is offset from the moving bar 82, the pulling plate 72 returns to a state perpendicular to the slider 21.

[0056] The motor 23 drives the driving gear 24 to reverse, driving the slider 21 to move forward. In the process of the slider 21 moving forward, the pulling plate 72 is driven forward, and then the moving bar 82 is pushed forward, so that the moving bar 82 aligns the lithium battery in the front and rear directions. Since both the left and right ends of the lithium battery are in contact with the rollers 32, the rollers 32 squeeze the lithium batteries against each other, so that the lithium batteries contact each other. When the moving bar 82 contacts the limit block 83, the moving bar 82 cannot move forward any further. At this time, the pulling plate 72 rotates backward to compress the spring 2 73. When the pulling plate 72 is staggered with the moving bar 82, the pulling plate 72 returns to a state perpendicular to the slider 21. At this time, the lithium batteries are arranged and clamped by the rollers 32.

[0057] During the forward movement of the slider 21, the fixed tube 61 draws outside air into the fixed tube 61 through the one-way air inlet pipe 62. At this time, the push block 55 is no longer pushed by the gas, and the spring 1 43 in the compressed state drives the movable plate 41 to move toward the center of the workbench 1 and continue to reset, so that the locking block 44 is stuck on the locking gear 33, so that the roller 32 cannot rotate. At this time, the slider 21 directly drives the roller 32 forward, and drives the lithium battery to be welded to the welding position for welding.

[0058] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0059] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A laser welding machine for lithium battery production, comprising a workbench (1), characterized in that: The workbench (1) is provided with a driving assembly (2), a roller clamp assembly (3) is fixedly mounted on the left side of the driving assembly (2), a locking assembly (4) is provided in the middle of the driving assembly (2), a connecting assembly (5) is fixedly mounted on the right side of the locking assembly (4), the workbench (1) is connected to a moving assembly (9) in a transmission manner, and the top end of the moving assembly (9) is connected to a laser welding assembly (10); The driving assembly (2) includes a slider (21), the slider (21) is movably connected to the workbench (1), a rack (22) is fixedly mounted on the bottom end of the slider (21), a motor (23) is fixedly mounted on the bottom end of the workbench (1), and a driving gear (24) is fixedly sleeved on the output end of the motor (23); The roller clamp assembly (3) includes a connecting plate (31), the connecting plate (31) is fixedly mounted on a side of the top end of the slider (21) close to the center of the workbench (1), the side of the connecting plate (31) close to the center of the workbench (1) is rotatably connected to a roller (32), and the middle of the roller (32) is rotatably connected to a locking gear (33); The locking assembly (4) includes a movable plate (41), the movable plate (41) being located on a side of the slider (21) close to the center of the workbench (1), a telescopic shaft (42) and a spring (43) being fixedly mounted on the side of the movable plate (41) close to the slider (21), the other ends of the telescopic shaft (42) and the spring (43) being fixedly mounted on the slider (21), and a locking block (44) being fixedly mounted on the other side of the movable plate (41); The connecting assembly (5) includes a fixed shaft (51), the fixed shaft (51) is fixedly mounted on a side of the movable plate (41) close to the slider (21), a positioning rail (52) is fixedly mounted on the other end of the fixed shaft (51), a supporting telescopic rod (53) is fixedly mounted between the positioning rail (52) and the slider (21), a positioning block (54) is slidably connected to the side of the positioning rail (52) away from the slider (21), and a push block (55) is fixedly mounted on the side of the positioning block (54) away from the positioning rail (52); A pulling assembly (7) is fixedly mounted on the rear end of the slider (21), and the pulling assembly (7) includes a fixed block (71), and the fixed block (71) is fixedly mounted on the rear side of the slider (21). A pulling plate (72) is rotatably connected to the side of the fixed block (71) close to the center of the workbench (1), and a second spring (73) is fixedly mounted between the pulling plate (72) and the second spring (73); An alignment component (8) is fixedly mounted on the top of the workbench (1), and the alignment component (8) includes a fixed bar (81), the fixed bar (81) is fixedly mounted on the workbench (1) and is located at the rear side of the slider (21), a spring three (84) is fixedly mounted on the front side of the fixed bar (81), and a moving bar (82) is fixedly mounted on the front end of the spring three (84), and the alignment component (8) also includes a limit block (83), the limit block (83) is fixedly mounted on the workbench (1) and is located at the front side of the moving bar (82).

2. A laser welding machine for lithium battery production according to claim 1, characterized in that: Slide grooves are provided on both the left and right sides of the workbench (1), and the sliders (21) are slidably connected in the slide grooves. There are two sliders (21) in total, and the two sliders (21) are symmetrically arranged about the center of the workbench (1).

3. The laser welding machine for lithium battery production according to claim 1, characterized in that: The driving gear (24) is meshed with the rack (22), and both the rack (22) and the driving gear (24) are located below the workbench (1), and the rack (22) is located in the middle of the bottom end of the driving assembly (2).

4. The laser welding machine for lithium battery production according to claim 1, characterized in that: The spring 1 (43) is sleeved on the telescopic shaft (42), and the locking block (44) is clamped on the roller (32).

5. The laser welding machine for lithium battery production according to claim 1, characterized in that: One end of the fixed shaft (51) away from the center of the workbench (1) passes through and extends to the side of the slider (21) away from the locking gear (33), and the bottom end of the push block (55) is an inclined surface.

6. The laser welding machine for lithium battery production according to claim 1, characterized in that: A pneumatic assembly (6) is fixedly mounted on the top surface of the workbench (1), and the pneumatic assembly (6) comprises a fixed tube (61), a one-way air inlet pipe (62) is fixedly mounted on the rear end of the fixed tube (61), a vertical tube (63) is fixedly mounted on the top end of the fixed tube (61), a switching box (64) is fixedly mounted in the middle of the vertical tube (63), and a movable shaft (67) is movably connected to the front end of the fixed tube (61).

7. A laser welding machine for lithium battery production according to claim 6, characterized in that: The pneumatic assembly (6) further comprises an air supply pipe (65) and a nozzle (66), wherein the nozzle (66) is fixedly mounted on the rear side of the top end of the air supply pipe (65) and is tilted downward. The air supply pipe (65) is fixedly mounted on the top end of the vertical pipe (63). The movable shaft (67) is fixedly connected to the slider (21), and the push block (55) is movably connected in the switching box (64).

8. The laser welding machine for lithium battery production according to claim 1, characterized in that: The projections of the pulling plate (72) and the moving bar (82) on the fixed bar (81) intersect, and the projections of the pulling plate (72) and the limiting block (83) on the fixed bar (81) do not contact.

Images