Laser welding tool for processing multi-size battery

Abstract

The present application relates to the technical field of laser welding, in particular to a laser welding tool for processing multi-size batteries, comprising a processing box and a moving assembly for driving the laser welding head, a base frame is fixedly installed on the top of the processing box, a pushing feeding assembly is arranged in the base frame and used to drive the battery body to realize interval type horizontal transfer, a back-and-forth movement plate in the pushing feeding assembly is responsible for gradually feeding the battery body, movement blocks are fixedly installed at both ends of the back-and-forth movement plate, and an up-and-down material feeding assembly is arranged in the movement blocks, the first motor is driven, chain transmission and mechanical linkage are adopted, time sequence coupling of four functions of clamping, conveying, taking and placing and cleaning is realized, multi-process cooperation is completed, the electrical control complexity and cost are greatly reduced, the absolute synchronization of the beats between processes is fundamentally ensured, high repeat positioning accuracy and anti-interference ability are realized, and the welding quality of the top end cover of the battery body is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser welding, in particular to a laser welding tool for processing multi-size batteries. BACKGROUND

[0002] With the rapid development of new energy vehicles, energy storage and other industries, the demand for large-scale and high-consistency production of square batteries is increasingly urgent. Laser welding has become the core process for connecting key parts such as battery electrodes and end covers due to its small heat-affected zone, high precision and good automation. In this process, the precision, efficiency and flexibility of the tooling fixture used for positioning and conveying the battery to the welding station directly determine the welding quality and overall production line rhythm.

[0003] Currently, the scheme of independently driving multiple clamping jaws with servo motors often requires stopping and replacing the fixture or performing tedious parameter resetting when adjusting different battery sizes, which seriously affects production continuity. Moreover, the synchronization of multiple motors is difficult to guarantee, and the mechanical clearance is easy to cause positioning drift after long-term use, which directly affects the welding yield. In addition, the intermittent motion is achieved by directly connecting the servo motor or using a cam divider. The former completely relies on the precise braking and closed-loop feedback of the motor. In high-speed reciprocating working conditions, the motor heating, driver response delay, and transmission elasticity of the belt or coupling will introduce unpredictable positioning jitter. The long-term reliability is reduced. Although the cam divider has good positioning rigidity, its motion curve is fixed, and it is difficult to adjust the rhythm and step distance. It cannot quickly adapt to product changes, which greatly reduces the quality of laser welding of the end part of the battery body. SUMMARY

[0004] In order to overcome the shortcomings of the prior art, the present application provides a laser welding tool for processing multi-size batteries.

[0005] To solve the above technical problems, the present application provides the following technical scheme: a laser welding tool for processing multi-size batteries, comprising a processing box body and a moving assembly for driving a laser welding head, the processing box body is fixedly installed with a base frame on the top, and a pushing feeding assembly is arranged inside the base frame for driving the battery body to realize interval type horizontal transfer;

[0006] The meandering motion plate in the pushing feeding assembly is responsible for gradually feeding the battery body. The meandering motion plate is fixedly installed with a moving block at both ends, and the moving block is internally provided with an up-down material conveying assembly. When the moving block moves to the lower side of the laser welding head, the suction cup in the up-down material conveying assembly rises and adsorbs the battery body. When returning, the suction cup descends and releases the adsorption;

[0007] The top of the base frame is provided with a support frame, a square clamping assembly is arranged in the support frame, and the square clamping assembly is used for centrally fixing the battery body; the square clamping assembly comprises a clamping base and a clamping plate; the spacing between the clamping plates is adjusted by a hydraulic cylinder in the clamping base; and the battery body of different sizes is clamped and fed.

[0008] A progressive cleaning assembly is arranged on the top of the clamping plate on the side close to the laser welding head; and the progressive cleaning assembly blows air to clean the top of the battery body when the battery body is fed at intervals.

[0009] As a preferred technical solution of the present application, the moving assembly comprises a transverse moving seat and a longitudinal moving seat; the transverse moving seat is fixedly installed on the top of the processing box through a side frame; the longitudinal moving seat is slidably connected to the top of the transverse moving seat; the laser welding head is fixedly installed on the slider of the longitudinal moving seat; the side of the processing box is connected to a controller through a folding frame; the pushing feeding assembly comprises a first motor, a fixed gear and a pushing block; the fixed gears are movably connected to the inner bottom of the base frame through shafts; the chain is drivingly connected between the four fixed gears; the base rods are fixedly installed at the two ends of the base frame; the moving blocks are movably penetrated in the base rods; the first motor is fixedly installed at the bottom of the base frame; and the output end of the first motor is fixedly installed at the bottom center of one of the fixed gears through a shaft.

[0010] A T-shaped sliding groove is arranged in the inner side of the meandering movement plate; T-shaped sliding blocks are slidably connected in the T-shaped sliding groove; the pushing blocks are fixedly installed between the T-shaped sliding blocks; the bottom of the pushing block is fixedly installed with a connecting rod; and the bottom end of the connecting rod is fixedly installed on the top of the chain.

[0011] As a preferred technical solution of the present application, the up-and-down strip assembly comprises an arc-shaped feeding plate and an arc-shaped limiting frame; the inner bottom of the moving block is fixedly installed with the arc-shaped limiting frame at the two ends; the arc-shaped limiting frame is provided with a limiting sliding groove; the limiting sliding blocks are slidably connected in the limiting sliding groove; the arc-shaped feeding plate is fixedly installed on the limiting sliding blocks; the arc-shaped feeding plate is movably arranged in the moving block; the arc-shaped feeding plate is provided with an arc-shaped pushing groove; the arc-shaped pushing rods are slidably connected in the arc-shaped pushing groove; the connecting rods are movably penetrated in the meandering movement plate.

[0012] Suction cups are fixedly installed between the tops of the arc-shaped feeding plates. A control switch is fixedly installed at the center of the side of one of the moving blocks away from the U-shaped moving plate. The control switch is connected to the suction cups. A T-shaped touch rod is provided on the moving block to operate the control switch. A T-shaped conveyor rod is movably connected through the center of the side of the other moving block near the U-shaped moving plate. The T-shaped conveyor rod extends through the U-shaped moving plate into the moving block. A connecting plate is fixedly installed at the end of the T-shaped conveyor rod away from the push block. The connecting plate is fixedly installed on the connecting rod. A first spring is provided at the end of the T-shaped conveyor rod near the push block. The first spring is fixedly connected to the U-shaped moving plate. The T-shaped conveyor rod moves inside the first spring. A second spring is fixedly installed at the end of the T-shaped touch rod near the U-shaped moving plate. The second spring is fixedly installed on the U-shaped moving plate. The T-shaped touch rod moves inside the second spring.

[0013] As a preferred embodiment of the present invention, a U-shaped support rod is fixedly installed on the top of the processing box, and a support frame is movably inserted through the U-shaped support rod. The square clamping assembly includes a second motor, a rotating plate, and an arc-shaped rotating rod. The second motor is fixedly installed on the inner bottom of the support frame by bolts. The output end of the second motor is connected to the rotating plate through a rotating shaft. Limiting guide rails are fixedly installed around the top of the support frame. A clamping base is slidably connected on the limiting guide rails. An arc-shaped rotating rod is movably connected between the clamping base and the rotating plate through a hinge.

[0014] Hydraulic cylinders are fixedly installed inside each clamping base, and the bottom of each clamping plate is fixedly installed on the hydraulic cylinder. A clamping groove is opened on the top of the clamping base, and the bottom of each clamping plate is movably inserted through the clamping groove.

[0015] As a preferred embodiment of the present invention, the progressive cleaning assembly includes a cleaning cylinder and a cleaning base. The cleaning cylinder is fixedly installed on the base frame at one end near the laser welding head. Cleaning rods are fixedly installed at both ends of the U-shaped motion plate on one side near the laser welding head, and the cleaning rods extend through the U-shaped motion plate into the cleaning cylinder. A piston plate is movably arranged inside the cleaning cylinder, and the top end of the cleaning rod is fixedly installed on the piston plate. An air inlet pipe and an air outlet pipe are fixedly installed on the end of the cleaning cylinder away from the U-shaped motion plate.

[0016] The cleaning seat is fixedly installed on the top of the clamping plate by an arc plate. Several cleaning nozzles are evenly installed on the side of the cleaning seat near the battery body, and the air outlet pipe is connected to the cleaning seat.

[0017] Compared with the prior art, the beneficial effects that this invention can achieve are:

[0018] 1. In this invention, the second motor in the square clamping assembly drives the rotating plate and four arc-shaped rotating rods to move the four clamping bases to converge towards the center along the limiting guide rail, achieving rapid and automatic centering of the battery body. Combined with the hydraulic cylinders within the clamping bases, the position of the clamping plate in the clamping slot can be adjusted to accommodate the stable clamping of batteries of different sizes, improving the size compatibility and positioning reliability of the battery body. The arc-shaped rotating rods convert the rotational motion into precise linear centripetal motion of the four clamping bases, achieving integrated automatic centering and rigid clamping of the battery. With the independent micro-adjustment of the clamping plate under hydraulic drive, high positioning accuracy is ensured while enabling rapid changeover without replacing the clamps, significantly improving the equipment's response speed and compatibility with different battery sizes.

[0019] 2. In this invention, the first motor in the feeding assembly drives the chain to move, which in turn drives the push block to move. The push block, through the cooperation of the T-shaped slider and the T-shaped groove of the circular motion plate, achieves horizontal reciprocating intermittent motion. This allows the moving block to drive the support frame and battery body to move steadily and equidistantly along the base rod, ensuring that the battery body can be accurately and segmentedly delivered to the area below the laser welding head. This provides a rhythmic and consistent feeding process for the welding station, transforming the continuous motion of the chain drive into precise step-by-step movement. Through the cooperation of the push block and the T-shaped groove in the circular motion plate, a stable rhythm for the movement and stopping of the moving block is achieved. The battery body feeding and positioning accuracy does not depend on the braking accuracy of the motor itself, but is guaranteed by the hard limit and movement of the mechanical structure, achieving extremely high repeatability and anti-interference capability. This provides a zero-fluctuation reference position for laser welding and improves the welding quality of the top end cap of the battery body.

[0020] 3. In this invention, through the cooperation of the T-shaped contact rod, the second spring, and the control switch in the upper and lower material conveying components, the push block triggers the suction cup to adsorb and release the support frame at the end of the stroke. At the same time, the T-shaped material conveying rod, the first spring, the connecting plate, and the arc-shaped push rod form a lifting linkage mechanism, realizing the automatic descent and elevation of the suction cup during the picking and placing process, completing the cyclic gripping and placement of the support frame. The entire process requires no manual intervention, achieving efficient cyclic operation. The suction cup adsorption, release, and vertical lifting actions are automatically controlled, and the picking and placing process is seamlessly connected with the horizontal feeding movement, forming a fully automatic closed-loop cycle of gripping, advancing, releasing, and returning, significantly improving the continuity and efficiency of the operation.

[0021] 4. In this invention, the rotary motion plate, in conjunction with the cleaning rod in the progressive cleaning assembly, drives the piston plate inside the cleaning cylinder to reciprocate along with the feeding motion, realizing the automatic cycle of compressed blowing and suction preparation. The airflow is guided to the top of the battery through the cleaning seat and nozzle, completing surface cleaning at the same time as feeding, effectively removing dust and impurities, avoiding welding defects. The cleaning action is completely synchronized with the feeding rhythm, improving welding consistency and finished product quality. The top blowing is completed before the battery reaches the welding position, effectively removing contaminants that affect welding quality, realizing the integration of production and quality inspection links, eliminating welding defects caused by cleaning oversights or asynchrony at the cost of zero additional energy consumption and time.

[0022] 5. In this invention, the physical positions of the same push block at both ends of the stroke trigger the adsorption, gripping and release / descending actions respectively, and the automatic lifting and lowering of the suction cup is achieved by the spring and the upper and lower material conveying components. This eliminates the need for a separate lifting drive motor and complex electrical control program. The entire cycle of gripping, transferring, releasing and resetting of the support frame is completed solely by the mechanical motion sequence of the main drive chain. The structure is ingenious and the reliability is extremely high.

[0023] 6. In this invention, by cooperating the progressive cleaning component and the pushing feeding component, the parasitic integration and energy reuse of the cleaning function and the feeding motion are realized. The piston of the cleaning cylinder is directly driven by the reciprocating motion of the feeding mechanism, so that the cleaning action and the feeding rhythm are naturally and strictly synchronized without additional control. Each feeding is a cleaning, seamlessly embedding the quality assurance link into the main production process.

[0024] 7. In this invention, the timing coupling of four major functions—clamping, conveying, picking up and placing, and cleaning—is achieved through the first motor drive, chain transmission, and mechanical linkage. This completes multi-process collaboration, which not only significantly reduces the complexity and cost of electrical control but also fundamentally ensures the absolute synchronization of the cycle time between each process, avoiding efficiency losses caused by signal delays or scheduling conflicts. The base rod and T-shaped slide groove form a primary linear guide reference, while the limiting guide rail of the square clamping component and the arc-shaped rotating rod form a secondary radial constraint network. This precise guidance and constraint design ensures that the cumulative error of the battery body is minimized throughout the entire process from clamping to welding, providing static and dynamic rigidity that surpasses conventional equipment for high-precision welding. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the processing box of the present invention;

[0027] Figure 3 This is a schematic diagram of the internal structure of the support frame of the present invention;

[0028] Figure 4This is a schematic diagram of the internal structure of the cleaning cylinder of the present invention;

[0029] Figure 5 This is a schematic diagram of the internal structure of the base frame of the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of the first motor of the present invention;

[0031] Figure 7 This is a schematic diagram of the structure of the push block of the present invention;

[0032] Figure 8 This is a schematic diagram of the structure of the spiral motion plate of the present invention;

[0033] Figure 9 This is a schematic diagram of the T-shaped conveyor bar of the present invention;

[0034] Figure 10 This is a schematic diagram of the T-shaped touch bar of the present invention.

[0035] The components include: 10. Processing box; 11. Laser welding head; 12. Lateral moving seat; 13. Longitudinal moving seat; 14. Controller; 15. U-shaped support rod; 16. Side frame; 20. Base frame; 21. Base rod; 22. U-shaped motion plate; 23. T-shaped slide; 24. T-shaped slider; 25. Push block; 26. First motor; 27. Fixed gear; 28. Chain; 29. ​​Connecting rod; 30. Moving block; 31. Arc-shaped limit frame; 32. Limit slide; 33. Limit slider; 34. Arc-shaped feeding plate; 35. Arc-shaped push groove; 36. Arc-shaped push... 37. Moving rod; 38. Connecting rod; 49. Suction cup; 40. T-shaped contact rod; 41. Control switch; 42. Second spring; 43. T-shaped conveyor rod; 44. First spring; 45. Connecting plate; 50. Support frame; 51. Second motor; 52. Rotating plate; 53. Limiting guide rail; 54. Clamping base; 55. Arc-shaped rotating rod; 56. Hydraulic cylinder; 57. Clamping groove; 58. Clamping plate; 60. Cleaning cylinder; 61. Cleaning seat; 62. Cleaning rod; 63. Piston plate; 64. Air inlet pipe; 65. Air outlet pipe; 66. Cleaning nozzle; 67. Arc-shaped plate. Detailed Implementation

[0036] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0037] Example: Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, a laser welding fixture for processing multi-size batteries includes a processing housing 10 and a moving assembly for driving a laser welding head 11. A base frame 20 is fixedly installed on the top of the processing housing 10. A pushing and feeding assembly is provided inside the base frame 20 to drive the battery body to move horizontally at intervals. A loop-shaped motion plate 22 in the pushing and feeding assembly is responsible for progressively feeding the battery body. Motion blocks 30 are fixedly installed at both ends of the loop-shaped motion plate 22. The moving assembly includes a transverse moving seat 12 and a longitudinal moving seat 13. The transverse moving seat 12 is fixedly installed on the top of the processing housing 10 through a side frame 16. The longitudinal moving seat 13 is slidably connected to the top of the transverse moving seat 12. The laser welding head 11 is fixedly installed on the slider of the longitudinal moving seat 13. The laser welding head 11 is connected to the transverse moving seat 13 through the longitudinal moving seat 13 and the transverse moving seat 13. The laser welding head 11 is driven to weld on the top of the battery body in coordination with the 2. The side of the processing box 10 is connected to the controller 14 through the folding frame. The controller 14 includes a display screen and a control keyboard. The pushing and feeding assembly includes a first motor 26, a fixed gear 27 and a pushing block 25. The fixed gear 27 is movably connected to the inner bottom of the base frame 20 through the rotating shaft. The four fixed gears 27 are connected by a chain 28. The base rod 21 is fixedly installed at both ends inside the base frame 20, and the moving blocks 30 are all movably inserted through the base rod 21. The first motor 26 is fixedly installed at the bottom of the base frame 20, and the output end of the first motor 26 is fixedly installed at the bottom center of one of the fixed gears 27 through the rotating shaft. The fixed gear 27 drives the outer chain 28 to perform a looping motion.

[0038] See Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 The inner side of the rotary motion plate 22 is provided with a T-shaped slide groove 23, and a T-shaped slider 24 is slidably connected in the T-shaped slide groove 23. The push block 25 is fixedly installed between the T-shaped sliders 24. The push block 25 achieves stable and smooth movement under the action of the T-shaped sliders 24 and the T-shaped slide groove 23. A connecting rod 29 is fixedly installed at the bottom of the push block 25, and the bottom end of the connecting rod 29 is fixedly installed on the top of the chain 28.

[0039] See Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7The first motor 26 in the feeding assembly is started, driving the fixed gears 27 and chain 28 around the bottom of the base frame 20 to perform cyclical motion. The chain 28 drives the push block 25 fixed to it to move through the connecting rod 29. The push block 25 slides in the T-shaped groove 23 of the loop motion plate 22 through the T-shaped slider 24, thereby driving the entire loop motion plate 22 and the motion blocks 30 fixed at both ends to perform horizontal, reciprocating intermittent motion along the base rod 21.

[0040] See Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 The moving block 30 is internally equipped with an upper and lower feeding assembly. When the moving block 30 moves below the laser welding head 11, the suction cup 38 in the upper and lower feeding assembly rises and adsorbs the battery body. When returning, the suction cup 38 descends and releases the adsorption. The upper and lower feeding assembly includes an arc-shaped feeding plate 34 and an arc-shaped limiting frame 31. Arc-shaped limiting frames 31 are fixedly installed at both ends of the inner bottom of the moving block 30. The arc-shaped limiting frame 31 has a limiting groove 32, and a limiting slider 33 is slidably connected in the limiting groove 32. The material plate 34 is fixedly installed on the limiting slider 33. The limiting slider 33 and the limiting groove 32 make the arc-shaped feeding plate 34 move up and down stably. The arc-shaped feeding plate 34 moves inside the moving block 30. The arc-shaped feeding plate 34 is provided with an arc-shaped pushing groove 35. The arc-shaped pushing rod 36 is slidably connected in the arc-shaped pushing groove 35. A connecting rod 37 is fixedly installed between the arc-shaped pushing rods 36 on the same side of the two moving blocks 30. The connecting rod 37 moves through the inside of the U-shaped moving plate 22.

[0041] See Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10Suction cups 38 are fixedly installed between the tops of the arc-shaped feeding plates 34. A control switch 41 is fixedly installed inside one of the moving blocks 30 at the center of the side away from the loop-shaped moving plate 22. The control switch 41 is connected to the suction cups 38. Pressing the control switch 41 activates the suction cups 38, causing them to grip and hold the support frame 50. Releasing the press of the control switch 41 releases the suction cups 38. A T-shaped touch bar 40 is provided on the moving block 30 to operate the control switch 41. A T-shaped conveying rod 43 is movably connected through the other moving block 30 at the center of the side near the loop-shaped moving plate 22. The conveyor rod 43 extends through the loop-shaped motion plate 22 into the interior of the motion block 30. A connecting plate 45 is fixedly installed at the end of the T-shaped conveyor rod 43 away from the push block 25, and the connecting plate 45 is fixedly installed on the connecting rod 37. A first spring 44 is provided at the end of the T-shaped conveyor rod 43 near the push block 25, and the first spring 44 is fixedly connected to the loop-shaped motion plate 22. The T-shaped conveyor rod 43 moves inside the first spring 44. A second spring 42 is fixedly installed at the end of the T-shaped contact rod 40 near the loop-shaped motion plate 22, and the second spring 42 is fixedly installed on the loop-shaped motion plate 22. The T-shaped contact rod 40 moves inside the second spring 42.

[0042] See Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 When the push block 25 is driven by the chain 28 to move away from the laser welding head 11, it moves between the two moving blocks 30 via the T-shaped groove 23 and the T-shaped slider 24. Specifically, the push block 25 moves towards one end of the T-shaped contact rod 40 until it reaches the end of the loop-shaped motion plate 22. At this point, the push block 25 presses against the T-shaped contact rod 40 and compresses the second spring 42. The T-shaped contact rod 40 then presses and activates the control switch 41 within the moving block 30. The suction cup 38 will adsorb and grasp the support frame 50 at the top. Then, the push block 25 will move synchronously with the chain 28. At this time, the push block 25 will move towards the laser welding head 11. The push block 25 will also carry the loop motion plate 22 and the motion block 30 to move horizontally along the base rod 21. During this process, the support frame 50 and the battery body at the top are stably and horizontally fed by the suction cup 38, and the battery body is advanced downwards to the laser welding head 11 to realize the arrangement and welding of the battery body end caps.

[0043] See Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10When the push block 25 moves with the chain 28 to the side near the laser welding head 11, the push block 25 will move in the loop motion plate 22 through the T-shaped slide groove 23 and the T-shaped slider 24. The push block 25 releases the limit on the T-shaped contact rod 40, and the T-shaped contact rod 40 resets under the stored force of the second spring 42. The suction cup 38 will release the suction grip on the bottom of the support frame 50. The push block 25 moves towards the T-shaped material rod 43. The push block 25 squeezes and pushes the T-shaped material rod 43 on the first spring 44. The T-shaped material rod 43 will move with the arc-shaped push rod 36 in the two moving blocks 30 through the connecting plate 45 and the connecting rod 37. When the arc-shaped push rod 36 moves horizontally, it moves downward with the arc-shaped feeding plate 34 on the arc-shaped limit frame 31 through the arc-shaped push groove 35, so that the suction cup 38 drops and gets away from the suction grip on the support frame 50.

[0044] See Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 When the connecting rod 29 on the chain 28 moves the pushing block 25 away from the laser welding head 11, the pushing block 25 will cause the return plate 22 and the moving block 30 to move horizontally along the base rod 21 again, bringing the suction cup 38 back to its initial position. At this time, the pushing block 25 will move back to the T-shaped contact rod 40, thereby releasing the limiting support on the T-shaped conveyor rod 43. At this time, the T-shaped conveyor rod 43 will reset under the stored force of the first spring 44. The T-shaped conveyor rod 43 will drive the arc-shaped pushing rod 36 in the moving block 30 to move in the opposite direction through the connecting plate 45 and the connecting rod 37. The arc-shaped pushing rod 36 will also move through the arc-shaped pushing groove 3. 5. The arc-shaped loading plate 34 on the arc-shaped limiting frame 31 moves upward, causing the suction cup 38 to rise and come into contact with the bottom of the support frame 50. The above action is repeated, and the push block 25 presses the control switch 41 through the T-shaped touch rod 40, causing the suction cup 38 to once again adsorb and grab the support frame 50, realizing the interval progression of the support frame 50, so that the distance the battery body advances at the bottom of the laser welding head 11 is consistent each time, realizing the arrangement and welding operation of the battery end cap in the battery body. This cycle is repeated to realize the interval and equidistant progression of the support frame 50 and the battery body, ensuring that the welding positioning accuracy is consistent each time, and completing the continuous and regular welding of the battery end cap.

[0045] See Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9A support frame 50 is installed on the top of the base frame 20. The support frame 50 contains a square clamping assembly for centering and fixing the battery body. The square clamping assembly includes a clamping base 54 and clamping plates 58. The clamping base 54 uses a hydraulic cylinder 56 to adjust the spacing of the clamping plates 58, allowing for clamping and feeding of battery bodies of different sizes. A U-shaped support rod 15 is fixedly installed on the top of the processing box 10, and the support frame 50 moves through the U-shaped support rod 15. Under the limiting support of the U-shaped support rod 15, the support frame 50 moves... The battery body at the top advances at intervals below the laser welding head 11. The square clamping assembly includes a second motor 51, a rotating plate 52, and an arc-shaped rotating rod 55. The second motor 51 is fixedly installed on the inner bottom of the support frame 50 by bolts. The output end of the second motor 51 is connected to the rotating plate 52 through a rotating shaft. Limiting guide rails 53 are fixedly installed around the top of the support frame 50. A clamping base 54 is slidably connected to the limiting guide rails 53. The arc-shaped rotating rod 55 is movably connected between the clamping base 54 and the rotating plate 52 through a hinge.

[0046] See Figure 10 , Figure 1 , Figure 2 , Figure 3 and Figure 4 Hydraulic cylinders 56 are fixedly installed inside the clamping base 54, and the bottom of the clamping plate 58 is fixedly installed on the hydraulic cylinder 56. The top of the clamping base 54 is provided with a clamping groove 57, and the bottom of the clamping plate 58 is movably inserted through the clamping groove 57. The distance between the clamping plates 58 is adjusted by the hydraulic cylinder 56 so that the clamping plate 58 can accommodate battery bodies of different sizes.

[0047] See Figure 5 , Figure 1 , Figure 2 , Figure 3 and Figure 4 The battery is placed at the top center of the support frame 50. The clamping components located around the bottom of the battery begin to operate. The second motor 51 drives the rotating plate 52 to rotate. Through the linkage of the four arc-shaped rotating rods 55, the four clamping bases 54 are simultaneously driven to converge towards the center along the limiting guide rails 53 at the top of the support frame 50, thereby completing the rapid centering and positioning of the battery. The four clamping plates 58 move symmetrically in four directions simultaneously, achieving uniform and stable clamping of the battery. At the same time, the hydraulic cylinders 56 inside the clamping bases 54, in conjunction with the clamping grooves 57, adjust the position of the clamping plates 58 at the top of the clamping bases 54, thereby limiting and clamping battery bodies of different sizes, with strong adaptability.

[0048] See Figure 5 , Figure 1 , Figure 2 , Figure 3 and Figure 4A progressive cleaning component is provided on the top of the clamping plate 58 near the laser welding head 11. The progressive cleaning component performs air blowing cleaning on the top of the battery body each time the battery body is loaded at intervals. The progressive cleaning component includes a cleaning cylinder 60 and a cleaning seat 61. The cleaning cylinder 60 is fixedly installed on the base frame 20 at one end near the laser welding head 11. Cleaning rods 62 are fixedly installed at both ends of the U-shaped motion plate 22 near the laser welding head 11, and the cleaning rods 62 extend through the U-shaped motion plate 22 to the cleaning cylinder 60. Inside the cleaning cylinder 60, a piston plate 63 is movably installed, and the top end of the cleaning rod 62 is fixedly installed on the piston plate 63. An air inlet pipe 64 and an air outlet pipe 65 are fixedly installed at the end of the cleaning cylinder 60 away from the U-shaped motion plate 22. Both the air inlet pipe 64 and the air outlet pipe 65 are fixedly equipped with one-way valves. The one-way valve on the air inlet pipe 64 ensures that the inside of the cleaning cylinder 60 is filled with air, while the one-way valve on the air outlet pipe 65 ensures that the compressed air inside the cleaning cylinder 60 is discharged in one direction and introduced into the cleaning seat 61.

[0049] See Figure 5 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The cleaning seat 61 is fixedly installed on the top of the clamping plate 58 by the arc plate 67. Several cleaning nozzles 66 are evenly installed on the side of the cleaning seat 61 near the battery body, and the air outlet pipe 65 is connected to the cleaning seat 61. The air sprayed by the cleaning nozzles 66 on the cleaning seat 61 blows air to clean the top of the battery body.

[0050] See Figure 6 , Figure 2 , Figure 3 , Figure 4 and Figure 5 Figure 6 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 When the rotary motion plate 22 moves toward the laser welding head 11, the cleaning rod 62 fixed on it pushes the piston plate 63 inside the cleaning cylinder 60 toward the laser welding head 11, compressing the air inside the cleaning cylinder 60 and discharging it through the air outlet pipe 65. The discharged airflow is guided to the cleaning seat 61 fixed on the top of the clamping plate 58, and is evenly blown toward the top of the battery by the cleaning nozzle 66 to remove dust or impurities and ensure welding quality. The cleaning process is synchronized with the feeding rhythm. The battery is automatically cleaned once every time it is fed. When the rotary motion plate 22 moves away from the laser welding head 11 and resets, the cleaning rod 62 pulls the piston plate 63 inside the cleaning cylinder 60 away from the laser welding head 11, which will generate negative pressure inside the cleaning cylinder 60. At this time, the cleaning cylinder 60 will draw in air through the air inlet pipe 64 to fill it, ready for feeding and cleaning.

[0051] Working principle: When the battery is placed at the top center of the support frame 50, the clamping components located around the bottom of the battery begin to operate. The second motor 51 drives the rotating plate 52 to rotate. Through the linkage of the four arc-shaped rotating rods 55, the four clamping bases 54 are simultaneously driven to converge towards the center along the limiting guide rails 53 at the top of the support frame 50, thereby completing the rapid centering and positioning of the battery. The four clamping plates 58 move symmetrically in four directions simultaneously, achieving uniform and stable clamping of the battery. At the same time, the hydraulic cylinders 56 inside the clamping bases 54, in conjunction with the clamping grooves 57, adjust the position of the clamping plates 58 at the top of the clamping bases 54, thereby limiting and clamping battery bodies of different sizes, with strong adaptability.

[0052] After the battery body is securely clamped and positioned, the first motor 26 in the feeding assembly is started, driving the fixed gears 27 and chain 28 around the bottom of the base frame 20 to perform cyclical motion. The chain 28 drives the push block 25 fixed to it to move through the connecting rod 29, and the push block 25 slides in the T-shaped groove 23 of the loop motion plate 22 through the T-shaped slider 24, thereby driving the entire loop motion plate 22 and the motion blocks 30 fixed at both ends to perform horizontal, reciprocating intermittent motion along the base rod 21.

[0053] When the push block 25 is driven by the chain 28 to move away from the laser welding head 11, it moves between the two moving blocks 30 via the T-shaped groove 23 and the T-shaped slider 24. Specifically, the push block 25 moves towards one end of the T-shaped contact rod 40 until it reaches the end of the loop-shaped motion plate 22. At this point, the push block 25 presses against the T-shaped contact rod 40 and compresses the second spring 42. The T-shaped contact rod 40 then presses and activates the control switch 41 inside the moving block 30, thus attracting... The suction cup 38 will adsorb and grasp the support frame 50 at the top. Then, the push block 25 will move synchronously with the chain 28. At this time, the push block 25 will move towards one end of the laser welding head 11. The push block 25 will also carry the loop motion plate 22 and the motion block 30 to move horizontally along the base rod 21. During this process, the support frame 50 and the battery body at the top are stably fed horizontally by the suction cup 38, and the battery body is advanced downwards to the laser welding head 11 to realize the arrangement and welding of the battery body end caps.

[0054] When the push block 25 moves with the chain 28 to the side near the laser welding head 11, the push block 25 will move in the loop motion plate 22 through the T-shaped slide 23 and the T-shaped slider 24. The push block 25 releases the limit on the T-shaped contact rod 40, and the T-shaped contact rod 40 resets under the stored force of the second spring 42. The suction cup 38 will release the suction grip on the bottom of the support frame 50. The push block 25 moves towards the T-shaped material rod 43. The push block 25 squeezes and pushes the T-shaped material rod 43 on the first spring 44. The T-shaped material rod 43 will move through the connecting plate 45 and the connecting rod 37, carrying the arc-shaped push rod 36 in the two moving blocks 30. When the arc-shaped push rod 36 moves horizontally, it moves downward through the arc-shaped push groove 35, carrying the arc-shaped loading plate 34 on the arc-shaped limit frame 31, so that the suction cup 38 descends and disengages from the suction grip on the support frame 50.

[0055] When the connecting rod 29 on the chain 28 moves the pushing block 25 away from the laser welding head 11, the pushing block 25 will cause the return plate 22 and the moving block 30 to move horizontally along the base rod 21 again, bringing the suction cup 38 back to its initial position. At this time, the pushing block 25 will move back towards the T-shaped contact rod 40, thereby releasing the limiting support on the T-shaped conveyor rod 43. At this time, the T-shaped conveyor rod 43 will reset under the stored force of the first spring 44. The T-shaped conveyor rod 43 will drive the arc-shaped pushing rod 36 in the moving block 30 to move in the opposite direction through the connecting plate 45 and the connecting rod 37. The arc-shaped pushing rod 36 will also move through the arc-shaped pushing groove 35. The arc-shaped loading plate 34 on the arc-shaped limiting frame 31 moves upward, causing the suction cup 38 to rise and come into contact with the bottom of the support frame 50. The above action is repeated, and the push block 25 presses the control switch 41 through the T-shaped touch rod 40, causing the suction cup 38 to once again adsorb and grab the support frame 50, realizing the interval progression of the support frame 50. This ensures that the distance the battery body advances at the bottom of the laser welding head 11 is consistent each time, realizing the arrangement and welding operation of the battery end caps in the battery body. This cycle is repeated to achieve the interval and equidistant progression of the support frame 50 and the battery body, ensuring consistent welding positioning accuracy each time, and completing the continuous and neat welding of the battery end caps.

[0056] When the rotary motion plate 22 moves toward the laser welding head 11, the cleaning rod 62 fixed thereon pushes the piston plate 63 inside the cleaning cylinder 60 toward the laser welding head 11, compressing the air inside the cleaning cylinder 60 and discharging it through the air outlet pipe 65. The discharged airflow is guided to the cleaning seat 61 fixed on the top of the clamping plate 58, and is evenly blown toward the top of the battery by the cleaning nozzle 66 to remove dust or impurities and ensure welding quality. The cleaning process is synchronized with the feeding cycle. The battery is automatically cleaned once every time it is fed. When the rotary motion plate 22 moves away from the laser welding head 11 and resets, the cleaning rod 62 pulls the piston plate 63 inside the cleaning cylinder 60 away from the laser welding head 11, which will generate negative pressure inside the cleaning cylinder 60. At this time, the cleaning cylinder 60 will draw in air through the air inlet pipe 64 to fill it, ready for feeding and cleaning.

[0057] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A laser welding fixture for processing multi-size batteries, comprising a processing housing (10) and a moving assembly for driving a laser welding head (11), characterized in that, The processing box (10) is fixedly installed with a base frame (20) on the top. The base frame (20) is equipped with a push feeding component, which is used to drive the battery body to achieve intermittent horizontal movement. The pusher feeding assembly has a circular motion plate (22) responsible for gradually feeding the battery body. The circular motion plate (22) has a motion block (30) fixedly installed at both ends. The motion block (30) has an upper and lower feeding assembly inside. When the motion block (30) moves to below the laser welding head (11), the suction cup (38) in the upper and lower feeding assembly rises and adsorbs the battery body. When returning, the suction cup (38) descends and releases the adsorption. A support frame (50) is installed on the top of the base frame (20). The support frame (50) has a square clamping assembly inside for fixing the battery body in the center. The square clamping assembly includes a clamping base (54) and a clamping plate (58). The clamping base (54) adjusts the spacing of the clamping plate (58) through a hydraulic cylinder (56) to clamp and feed battery bodies of different sizes. A progressive cleaning component is provided on the top of the clamping plate (58) on the side near the laser welding head (11). The progressive cleaning component blows air to clean the top of the battery body each time the battery body is fed at intervals. The feeding assembly includes a first motor (26), fixed gears (27) and a push block (25). The fixed gears (27) are movably connected around the inner bottom of the base frame (20) via a rotating shaft. A chain (28) is connected between the four fixed gears (27). The base frame (20) has base rods (21) fixedly installed at both ends inside the base frame (20), and the moving blocks (30) are all movably inserted through the base rods (21). The first motor (26) is fixedly installed at the bottom of the base frame (20), and the output end of the first motor (26) is fixedly installed at the center of the bottom of one of the fixed gears (27) via a rotating shaft. The inner side of the rotary motion plate (22) is provided with a T-shaped groove (23), and a T-shaped slider (24) is slidably connected in the T-shaped groove (23). The push block (25) is fixedly installed between the T-shaped sliders (24). A connecting rod (29) is fixedly installed at the bottom of the push block (25), and the bottom end of the connecting rod (29) is fixedly installed on the top of the chain (28).

2. The laser welding fixture for multi-size battery processing according to claim 1, characterized in that, The moving component includes a transverse moving seat (12) and a longitudinal moving seat (13). The transverse moving seat (12) is fixedly installed on the top of the processing box (10) via a side frame (16). The longitudinal moving seat (13) is slidably connected to the top of the transverse moving seat (12). The laser welding head (11) is fixedly installed on the slider of the longitudinal moving seat (13). The side of the processing box (10) is connected to a controller (14) via a folding frame.

3. The laser welding fixture for multi-size battery processing according to claim 2, characterized in that, The upper and lower feeding assembly includes an arc-shaped feeding plate (34) and an arc-shaped limiting frame (31). The arc-shaped limiting frame (31) is fixedly installed at both ends of the inner bottom of the moving block (30). The arc-shaped limiting frame (31) has a limiting groove (32). A limiting slider (33) is slidably connected in the limiting groove (32). The arc-shaped feeding plate (34) is fixedly installed on the limiting slider (33). The arc-shaped feeding plates (34) are all movable inside the moving blocks (30). The arc-shaped feeding plates (34) are all provided with arc-shaped pushing grooves (35). Arc-shaped pushing rods (36) are slidably connected in the arc-shaped pushing grooves (35). A connecting rod (37) is fixedly installed between the arc-shaped pushing rods (36) on the same side of the two moving blocks (30). The connecting rod (37) is movable through the inside of the loop-shaped moving plate (22).

4. The laser welding fixture for multi-size battery processing according to claim 3, characterized in that, Suction cups (38) are fixedly installed between the tops of the arc-shaped feeding plates (34). A control switch (41) is fixedly installed inside one of the moving blocks (30) at the center of the side away from the circular moving plate (22). The control switch (41) is connected to the suction cups (38). A T-shaped touch bar (40) for operating the control switch (41) is provided on the moving block (30). A T-shaped conveying rod (43) is movably connected inside the other moving block (30) at the center of the side close to the circular moving plate (22). The T-shaped conveying rod (43) extends through the circular moving plate (22) into the moving block (30). The T-shaped conveyor bar (43) has a connecting plate (45) fixedly installed at the end away from the push block (25), and the connecting plate (45) is fixedly installed on the connecting rod (37). The T-shaped conveyor bar (43) has a first spring (44) at the end near the push block (25), and the first spring (44) is fixedly connected to the loop motion plate (22). The T-shaped conveyor bar (43) moves inside the first spring (44). The T-shaped touch bar (40) has a second spring (42) fixedly installed at the end near the loop motion plate (22), and the second spring (42) is fixedly installed on the loop motion plate (22). The T-shaped touch bar (40) moves inside the second spring (42).

5. The laser welding fixture for multi-size battery processing according to claim 1, characterized in that, The top of the processing box (10) is fixedly installed with a U-shaped support rod (15), and the support frame (50) is movably inserted through the U-shaped support rod (15). The square clamping assembly includes a second motor (51), a rotating plate (52) and an arc-shaped rotating rod (55). The second motor (51) is fixedly installed on the inner bottom of the support frame (50) by bolts. The output end of the second motor (51) is connected to the rotating plate (52) through a rotating shaft. A limit guide rail (53) is fixedly installed around the top of the support frame (50). A clamping base (54) is slidably connected to the limit guide rail (53). An arc-shaped rotating rod (55) is movably connected between the clamping base (54) and the rotating plate (52) through a hinge.

6. The laser welding fixture for multi-size battery processing according to claim 5, characterized in that, Hydraulic cylinders (56) are fixedly installed inside each clamping base (54), and the bottom of each clamping plate (58) is fixedly installed on the hydraulic cylinder (56). A clamping groove (57) is opened on the top of the clamping base (54), and the bottom of each clamping plate (58) is movably inserted through the clamping groove (57).

7. The laser welding fixture for multi-size battery processing according to claim 1, characterized in that, The progressive cleaning assembly includes a cleaning cylinder (60) and a cleaning seat (61). The cleaning cylinder (60) is fixedly installed on one end of the base frame (20) near the laser welding head (11). The cleaning rods (62) are fixedly installed on both ends of the circular motion plate (22) near the laser welding head (11), and the cleaning rods (62) extend through the circular motion plate (22) into the cleaning cylinder (60). The cleaning cylinder (60) has a piston plate (63) inside, and the top of the cleaning rod (62) is fixedly installed on the piston plate (63). The cleaning cylinder (60) has an air inlet pipe (64) and an air outlet pipe (65) fixedly installed at the end away from the eccentric plate (22).

8. The laser welding fixture for multi-size battery processing according to claim 7, characterized in that, The cleaning seat (61) is fixedly installed on the top of the clamping plate (58) by the arc plate (67). The cleaning seat (61) has several cleaning nozzles (66) evenly installed on the side near the battery body, and the air outlet pipe (65) is connected to the cleaning seat (61).

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