Welding equipment and process for laser welding combined cap for lithium battery

Abstract

The invention discloses welding equipment for a laser welding combined cap for a lithium battery and a process of the welding equipment, and relates to the technical field of lithium battery welding. The welding equipment comprises a welding main body, a discharging groove is formed in one side of the top of the welding main body, and a supporting column is fixedly connected to the center of the top of the welding main body; a storage box is fixedly connected to one side of the top of the supporting column, a feeding pipe is fixedly connected to one side of the outer wall of the storage box, and an electric brake is fixedly connected to one end of the bottom of the inner wall of the feeding pipe. When the moving block pushes the push block to clamp the lithium battery, the moving block continues to move downwards to drive the push block and the lithium battery to move to the optimal welding position, and the problem that in the using process of the laser welding combined cap equipment for the lithium battery, when a small batch of lithium batteries with different specifications are machined, the welding efficiency is high is further solved. The problem that the processing efficiency of the lithium battery is low due to the fact that the equipment is frequently paused for multiple times and parameters of the equipment are adjusted in the prior art is solved.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery welding, and in particular to a welding device and a process for laser welding a combined cap for a lithium battery. Background Art

[0002] A lithium battery is a battery that uses lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. During the assembly process of lithium batteries, a cap is required, and the production of the cap is usually done by laser welding. Laser radiation heats the surface of the cap, and the surface heat diffuses to the inside through heat conduction. By controlling the width, energy, peak power, and repetition frequency of the laser pulse, the cap is melted to form a specific molten pool, thereby achieving the effect of combining the contacted objects and combining the cap with the lithium battery.

[0003] The existing technology has the following problems: 1. When the existing laser welding combined caps and welding equipment for lithium batteries are used to process small batches of lithium batteries with different specifications, the equipment is often frequently paused and the parameters of the equipment are adjusted, resulting in low efficiency in lithium battery processing; 2. During the use of the existing laser welding combined cap for lithium batteries and its welding equipment, when the cap is placed on the surface of the lithium battery and moved to the bottom of the laser welder, it is affected by inertia, causing the cap to easily shift, thereby affecting the quality of the lithium battery welding. Summary of the invention

[0004] The present invention provides a laser welding device for a lithium battery combined cap and a process thereof to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: A welding device for a laser-welded combined cap for a lithium battery, comprising a welding body, a discharge groove is provided on one side of the top of the welding body, a support column is fixedly connected to the center of the top of the welding body, a storage box is fixedly connected to one side of the top of the support column, a feeding pipe is fixedly connected to one side of the outer wall of the storage box, an electric brake is fixedly connected to one end of the bottom of the inner wall of the feeding pipe, and a laser welder is fixedly connected to one side of the top of the support column close to the storage box; A limiting shell is fixedly connected to the middle of the outer wall of the support column, and one end of the top of the limiting shell is fixedly connected to a feed pipe, the inner wall of the limiting shell is rotatably connected to a turntable, the top of the turntable is fixedly connected to a plurality of fixed bins, the top of one side of the inner wall of the fixed bin is fixedly connected to a ramp plate, and a lithium battery is arranged on the inner wall of the fixed bin, and a clamping mechanism is arranged on the inner wall of the fixed bin.

[0006] A further improvement of the technical solution of the present invention is that the clamping mechanism includes a motor fixedly connected to one end of the top of the inner wall of the fixed warehouse, the output end of the motor is fixedly connected to a transmission gear, and the bottom of the transmission gear is rotatably connected to a baffle, and one side of the outer wall of the baffle is fixedly connected to the inner wall of the fixed warehouse, one side of the outer wall of the transmission gear is meshed with a gear ring, and the gear ring is between the top of the inner wall of the fixed warehouse and the top of the baffle, the inner wall of the gear ring is meshed with a plurality of first gear screws, and the bottom of the first gear screw is rotatably connected to a support plate, and one end of the top of the support plate close to the first gear screw is fixedly connected to a limiting plate, the middle part of the outer wall of the first gear screw is threadedly connected with a moving block, and one side of the outer wall of the moving block is slidably connected to the inner wall of the limiting plate, and the side of the moving block away from the limiting plate has a certain inclination angle, the inclined surface of the moving block is slidably connected with a push block, one end of the outer wall of the push block is fixedly connected to an elastic telescopic rod, the output end of the elastic telescopic rod is fixedly connected to a clamping block, and one side of the outer wall of the clamping block overlaps with the top of one side of the outer wall of the lithium battery.

[0007] A further improvement of the technical solution of the present invention is that: an electric telescopic rod is fixedly connected to the center of the bottom of the support plate, the bottom of the electric telescopic rod is fixedly connected to a limiting block, and the bottom of the limiting block is fixedly connected to a plurality of support rods, and the bottom of the support rod is fixedly connected to the bottom of the inner wall of the fixed warehouse, a groove is opened in the middle of one end of the top of the limiting block, and the inner wall of the groove is slidably connected to the outer wall of the support plate, the two ends of the top of the limiting block are fixedly connected to a spring return rod, and the top of the spring return rod is fixedly connected to the top of the inner wall of the fixed warehouse, the middle part of the outer wall of the spring return rod is slidably connected to a reset plate, the two ends of one side of the outer wall of the reset plate are slidably connected to an insert plate, and one end of the insert plate is fixedly connected to both sides of the outer wall of the push block, the two ends of the outer wall of the reset plate close to one side of the insert plate are fixedly connected to a spring, and one end of the spring is fixedly connected to one side of the outer wall of the insert plate.

[0008] A further improvement of the technical solution of the present invention lies in that: the top of the reset plate is fixedly connected with a linkage warehouse, and the inner wall of the linkage warehouse is slidably connected with the outer wall of the push block, one end of the top of the push block is fixedly connected with a first tooth plate, the top of the first tooth plate is meshed with a first bevel gear, and the two sides of the outer wall of the first bevel gear are rotatably connected with the inner wall of the linkage warehouse, the top of the first bevel gear is meshed with a second bevel gear, and the top of the second bevel gear is rotatably connected with the top of the inner cavity of the linkage warehouse, the two sides of the outer wall of the second bevel gear are meshed with a gear shaft, and one side of the outer wall of the gear shaft is rotatably connected with the inner wall of the linkage warehouse, the top of the gear shaft is fixedly connected with a semicircular gear, and one side of the outer wall of the semicircular gear is meshed with a second tooth plate, the outer wall of the second tooth plate is slidably connected with the top of the inner wall of the linkage warehouse, and one end of the second tooth plate is fixedly connected with an elastic push rod, one end of the elastic push rod is fixedly connected with the push block, and a cap is overlapped on one side of the outer wall of the push block, and the cap overlaps with the top of the lithium battery.

[0009] A further improvement of the technical solution of the present invention is that: a plurality of electric ball screws are rotatably connected to the bottom of the inner wall of the fixed bin, and one end of the electric ball screw is rotatably connected to the middle part of the inner wall of the fixed bin, the outer wall of the electric ball screw is threadedly connected to a lifting platform, the inner wall of the lifting platform is fixedly connected to a plurality of auxiliary frames, the inner wall of the auxiliary frame is slidably connected to a pushing base plate, and one end of the top of the pushing base plate is fixedly connected to a special-shaped block.

[0010] A further improvement of the technical solution of the present invention is that: the inner wall of the gear ring is meshed with a second gear screw between the first gear screws on both sides, and the bottom of the second gear screw is rotatably connected to the bottom of the inner wall of the fixed bin, and the bottom of the outer wall of the second gear screw is slidably connected with a linkage gear, one side of the outer wall of the linkage gear is meshed with a third tooth plate, and one side of the outer wall of the third tooth plate is fixedly connected to one side of the outer wall of the push base plate.

[0011] A further improvement of the technical solution of the present invention is that both ends of the outer wall of the third tooth plate are fixedly connected with elastic frames, and the inner wall of the elastic frame is slidably connected with a tooth block, and the outer wall of the tooth block overlaps one side of the outer wall of the linkage gear.

[0012] A further improvement of the technical solution of the present invention is that: sliding grooves are opened on both sides of the outer wall of the second gear screw, the inner walls of the sliding grooves are slidably connected with connecting blocks, and one end of the connecting block is fixedly connected to the inner wall of the linkage gear.

[0013] A further improvement of the technical solution of the present invention is that a plurality of slots are provided at the bottom of one side of the inner wall of the fixed bin, and the inner walls of the slots are slidably connected to the outer wall of the pushing bottom plate.

[0014] A process for laser welding a combined cap for a lithium battery, the method using the above-mentioned welding equipment for laser welding a combined cap for a lithium battery, the method is as follows: S1: Place the lithium battery in the fixed bin, use the push bottom plate to support the bottom of the lithium battery, then start the electric ball screw to make the lifting platform push the push bottom plate to move the lithium battery to a suitable position for subsequent clamping and fixing; S2: Use the gear ring to drive the first gear screw rod, so that the moving block arranged on the outer wall thereof pushes the pushing block, thereby clamping and fixing the lithium battery and pushing the lithium battery to a suitable position for subsequent welding; S3: By setting a linkage bin on the top of the push block, when the push block moves, the first tooth plate is used to drive the first bevel gear and the second bevel gear in the linkage bin, so that the second tooth plate set on the inner wall pushes the push block, limits the cap and cleans the surface of the lithium battery at the same time.

[0015] Due to the adoption of the above technical solution, the present invention has the following technical advances compared with the prior art: 1. The present invention provides a welding device and a process for a laser-welded combined cap for a lithium battery. The transmission gear arranged at the output end of the starting motor drives the gear ring to rotate, so that the first gear screw drives the moving block arranged on the outer wall to move downward, and pushes the push block in contact with the inclined surface of the moving block to move toward the lithium battery. The outer wall of the lithium battery is clamped and fixed by a clamping block arranged at one end of an elastic telescopic rod. At the same time, the moving block continues to move downward until the bottom of the moving block touches a protrusion arranged at one end of the push block, and drives the push block and the lithium battery clamped on one side of the clamping block to move downward until the bottom of the push block contacts the top of the support plate and stops, so that the lithium battery is in the best position for laser welding. This further solves the problem that the laser-welded combined capping device for lithium batteries often frequently pauses the device and adjusts the parameters of the device when processing lithium batteries of small batches and different specifications during use, thereby causing low lithium battery processing efficiency.

[0016] 2. The present invention provides a welding device and a process for a laser-welded combined cap for a lithium battery. A gear shaft is arranged on both sides of the inner wall of a linkage bin, so that the right-angle gear surfaces on both sides of the outer wall of the second bevel gear drive the gear shaft to rotate, so that the semicircular gear arranged on the top of the gear shaft drives the second tooth plate arranged on the inner wall of the linkage bin to move. When the second tooth plate moves to the end, a push block is used to push the cap away from the center of the upper surface of the lithium battery, so that when the push block moves on the surface of the lithium battery, fine dust attached to the surface of the lithium battery is cleaned. At the same time, since the second tooth plates on the other two sides have a low matching degree with the semicircular gears, when the cap is about to leave the upper surface of the lithium battery, the second tooth plates on the other two sides support the outer wall of the cap, so that the cap is moved back to the center of the upper surface of the lithium battery, further solving the problem that when the laser-welded combined cap device for lithium batteries is used, when the cap is placed on the surface of the lithium battery and moves to the bottom of the laser welder, it is affected by inertia, causing the cap to easily shift, thereby affecting the quality of lithium battery welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the limiting shell of the present invention; Figure 3 It is a front cross-sectional view of the fixed bin of the present invention; Figure 4 It is a cross-sectional view of the top surface of the fixed bin of the present invention; Figure 5 This is a schematic diagram of the internal structure of the fixed bin of the present invention; Figure 6It is a schematic diagram of the lifting platform structure of the present invention; Figure 7 It is a schematic diagram of the linkage gear structure of the present invention; Figure 8 It is a schematic diagram of the clamping mechanism of the present invention; Fig. 9 It is a schematic cross-sectional view of the top of the linkage bin of the present invention; Fig.10 For the present invention Figure 3 The enlarged schematic diagram at A in the middle; Fig.11 For the present invention Figure 8 The enlarged schematic diagram of point B in the middle; Fig.12 For the present invention Fig. 9 Enlarged schematic diagram at point C in the middle.

[0018] In the figure: 1. welding body; 2. discharge trough; 3. support column; 4. storage box; 5. feeding pipe; 6. laser welding device; 7. limit shell; 8. feeding pipe; 9. turntable; 10. fixed bin; 11. ramp plate; 12. lithium battery; 13. motor; 14. transmission gear; 15. baffle plate; 16. gear ring; 17. first gear screw; 18. support plate; 19. limit plate; 20. moving block; 21. electric brake; 22. push block; 23. elastic telescopic rod; 24. clamping block; 25. electric telescopic rod; 26. limit block; 27. spring return rod; 28. Reset plate; 29, plug plate; 30, spring; 31, first tooth plate; 32, first bevel gear; 33, second bevel gear; 34, gear shaft; 35, semicircular gear; 36, second tooth plate; 37, elastic push rod; 38, push block; 39, cap; 40, electric ball screw; 41, lifting platform; 42, auxiliary frame; 43, push bottom plate; 44, special-shaped block; 45, second gear screw; 46, linkage gear; 47, third tooth plate; 48, elastic frame; 49, tooth block; 50, slide groove; 51, connecting block; 52, slot; 53, linkage bin. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0020] like Figures 1 to 12As shown, a welding device for a laser-welded combined cap for a lithium battery described in an embodiment of the present invention comprises a welding body 1, a discharge groove 2 is provided on one side of the top of the welding body 1, a support column 3 is fixedly connected to the center of the top of the welding body 1, a storage box 4 is fixedly connected to one side of the top of the support column 3, and a feeding pipe 5 is fixedly connected to one side of the outer wall of the storage box 4, and an electric gate 21 is fixedly connected to one end of the bottom of the inner wall of the feeding pipe 5, a laser welder 6 is fixedly connected to one side of the top of the support column 3 close to the storage box 4, a limiting shell 7 is fixedly connected to the middle of the outer wall of the support column 3, and a feeding pipe 8 is fixedly connected to one end of the top of the limiting shell 7, a turntable 9 is rotatably connected to the inner wall of the limiting shell 7, a plurality of fixed bins 10 are fixedly connected to the top of the turntable 9, a ramp 11 is fixedly connected to the top of one side of the inner wall of the fixed bin 10, and a lithium battery 12 is arranged on the inner wall of the fixed bin 10, and a clamping mechanism is arranged on the inner wall of the fixed bin 10; During operation, a support column 3 is arranged at the center of the top of the welding body 1, and the cap 39 material is placed in a storage box 4 arranged on one side of the top of the support column 3. A limit shell 7 is arranged in the middle of the outer wall of the support column 3, and a turntable 9 arranged on the inner wall of the limit shell 7 is started, so that a plurality of fixed bins 10 arranged on the top of the turntable 9 are slowly moved to the bottom of a feed pipe 8 arranged at one end of the top of the limit shell 7. The raw materials of lithium batteries 12 are sequentially slid from the feed pipe 8 along the ramp 11 into the fixed bin 10, and the electric steel ball screw 40 is started to drive the lifting platform 41, so that the pushing bottom plate 43 arranged on the inner wall of the lifting platform 41 pushes the lithium battery 12 to be adjusted in the fixed bin 10, and the detector arranged in the fixed bin 10 is used to make the position of the lithium battery 12 slightly lower. At the push block 38, the turntable 9 drives the fixed bin 10 to move to the feeding port of the feeding pipe 5, and then the electric gate 21 is started to send the cap 39 from the storage box 4 into the fixed bin 10 along the feeding pipe 5, so that the cap 39 is on the top of the lithium battery 12, and the transmission gear 14 set at the output end of the starting motor 13 drives the ring gear 16 to rotate, so that the first gear screw 17 drives the moving block 20 set on the outer wall to move downward, and pushes the pushing block 22 contacting the inclined surface of the moving block 20 to move toward the lithium battery 12, so that the elastic telescopic rod 23 set at one end of the outer wall of the pushing block 22 pushes the clamping block 24 to clamp and fix the outer wall of the lithium battery 12, and when the moving block 20 moves downward, the ring gear 16 drives the second gear screw 17 to move downward. The gear screw 45 rotates, so that the second gear screw 45 drives the linkage gear 46 to slowly pull the push bottom plate 43 out from the bottom of the lithium battery 12. At the same time, the moving block 20 continues to move downward until the bottom of the moving block 20 touches the protrusion set at one end of the push block 22, and drives the push block 22 and the lithium battery 12 clamped by one side of the clamping block 24 to move downward until the bottom of the push block 22 contacts the top of the support plate 18 and stops, so that the lithium battery 12 is in the best position for laser welding. At this time, the turntable 9 drives the fixed bin 10 to move to the bottom of the laser welder 6, and the laser welder 6 is used to weld the lithium battery 12 and the cap 39 in the fixed bin 10. Then the turntable 9 drives the fixed bin 10 to Move until the fixed bin 10 moves to above the discharge groove 2 set on one side of the top of the welding body 1, and start the motor 13 again to make the ring gear 16 rotate in the opposite direction, thereby releasing the limit of the clamping block 24 on the lithium battery 12, so that the lithium battery 12 is discharged along the discharge port set at the bottom of the fixed bin 10. At the same time, the pushing bottom plate 43 is slowly reset, and then the turntable 9 drives the fixed bin 10 back to the bottom of the feed pipe 8 for the second round of lithium battery 12 processing, which further solves the problem that the laser welding combined capping equipment for lithium batteries often frequently pauses the equipment and adjusts the equipment parameters when processing small batches of lithium batteries 12 with different specifications during use, thereby causing low processing efficiency of lithium batteries 12.

[0021] The clamping mechanism includes a motor 13 fixedly connected to one end of the top of the inner wall of the fixed bin 10, the output end of the motor 13 is fixedly connected to a transmission gear 14, and the bottom of the transmission gear 14 is rotatably connected to a baffle 15, and one side of the outer wall of the baffle 15 is fixedly connected to the inner wall of the fixed bin 10, one side of the outer wall of the transmission gear 14 is meshed with a gear ring 16, and the gear ring 16 is between the top of the inner wall of the fixed bin 10 and the top of the baffle 15, and the inner wall of the gear ring 16 is meshed with a plurality of first gear screws 17, and the first gear screws 17 are connected to the inner wall of the fixed bin 10. The bottom of the gear 7 is rotatably connected to a support plate 18, and one end of the top of the support plate 18 close to the first gear screw 17 is fixedly connected to a limit plate 19, the middle part of the outer wall of the first gear screw 17 is threadedly connected to a moving block 20, and one side of the outer wall of the moving block 20 is slidably connected to the inner wall of the limit plate 19, and the side of the moving block 20 away from the limit plate 19 has a certain inclination angle, the inclined surface of the moving block 20 is slidably connected to a push block 22, one end of the outer wall of the push block 22 is fixedly connected to an elastic telescopic rod 23, and the elastic telescopic rod The output end of the support plate 18 is fixedly connected with a clamping block 24, and one side of the outer wall of the clamping block 24 overlaps with the top of one side of the outer wall of the lithium battery 12. The bottom of the support plate 18 is fixedly connected with an electric telescopic rod 25, and the bottom of the electric telescopic rod 25 is fixedly connected with a limiting block 26, and the bottom of the limiting block 26 is fixedly connected with a plurality of support rods, and the bottom of the support rod is fixedly connected with the bottom of the inner wall of the fixed bin 10. A groove is provided in the middle of one end of the top of the limiting block 26, and the inner wall of the groove is slidably connected with the outer wall of the support plate 18. Spring return rods 27 are fixedly connected to the two ends of the top of the positioning block 26, and the top of the spring return rod 27 is fixedly connected to the top of the inner wall of the fixed bin 10, and a return plate 28 is slidably connected to the middle part of the outer wall of the spring return rod 27, and plug plates 29 are slidably connected to the two ends of one side of the outer wall of the return plate 28, and one end of the plug plate 29 is fixedly connected to the two sides of the outer wall of the push block 22, and springs 30 are fixedly connected to the two ends of the outer wall of the return plate 28 close to the plug plate 29, and one end of the spring 30 is fixedly connected to one side of the outer wall of the plug plate 29.

[0022] During operation, a motor 13 is arranged at one end of the top of the inner wall of the fixed bin 10 to drive the transmission gear 14 arranged at the output end to rotate, and a baffle 15 is arranged on one side of the inner wall of the fixed bin 10, and the baffle 15 is used to limit the transmission gear 14 and the ring gear 16. When the push bottom plate 43 pushes the lithium battery 12 to a position slightly lower than the push block 38, a plurality of limit blocks 26 are arranged in the fixed bin 10, and the electric telescopic rod 25 arranged on the top thereof is started, so that the support plate 18 arranged at the output end moves upward in the groove arranged at one end of the top of the limit block 26, and drives the first gear screw 17 arranged on the top of the support plate 18 to embed into the ring gear 16. At this time, the transmission gear 1 The gear ring 16 is driven to rotate, thereby driving a plurality of first gear screws 17 arranged on the inner wall of the gear ring 16. A moving block 20 is arranged in the middle of the outer wall of the first gear screw 17. When the first gear screw 17 rotates, the moving block 20 is driven to move downward in the limit plate 19, so that the oblique cut surface of the moving block 20 pushes the push block 22 to move toward the direction of the lithium battery 12. An elastic telescopic rod 23 is arranged at one end of the outer wall of the push block 22, so that when the clamping block 24 arranged at the output end of the elastic telescopic rod 23 contacts the outer wall of the lithium battery 12, the elastic telescopic rod 23 is used for buffering to avoid deformation of the surface of the lithium battery 12 during the clamping process. At the same time, the moving block 20 continues to The moving block 20 moves downward until the bottom of the moving block 20 touches the protrusion at one end of the pushing block 22, and then drives the pushing block 22 and the lithium battery 12 clamped by the clamping block 24 to move downward synchronously until the bottom of the pushing block 22 contacts the top of the supporting plate 18 and stops, so that the lithium battery 12 is in the best position for laser welding. When the lithium battery 12 and the cap 39 are welded, the gear ring 16 rotates in the opposite direction and causes the first gear screw 17 to drive the moving block 20 to move upward. By setting spring return rods 27 at both ends of the top of the limit block 26, the pushing block 22 that loses the limit of the moving block 20 is subjected to the elastic force of the spring return rod 27, and the reset plate 28 set on the outer wall is used to push the pushing block 22 to Initial position, and by setting plug plates 29 on both sides of the outer wall of the push block 22, and one end of the plug plate 29 passes through the reset plate 28, and using the spring 30 set on the outer wall of the reset plate 28 close to the plug plate 29, the push block 22 is pushed toward the position of the first gear screw 17 until the push block 22 returns to its original position, further solving the problem that when the laser welding combined capping device for lithium batteries is used, when facing different sizes of lithium batteries 12 for processing, it is often necessary to adjust the height of the lithium battery 12 clamped by the device and the output power of the laser welder 6 to avoid the emission end of the laser welder 6 being too close or too far from the lithium battery 12, resulting in a cold weld between the cap 39 and the lithium battery 12.

[0023] The top of the reset plate 28 is fixedly connected to a linkage bin 53, and the inner wall of the linkage bin 53 is slidably connected to the outer wall of the push block 22. One end of the top of the push block 22 is fixedly connected to a first toothed plate 31, the top of the first toothed plate 31 is meshed with a first bevel gear 32, and the two sides of the outer wall of the first bevel gear 32 are rotatably connected to the inner wall of the linkage bin 53. The top of the first bevel gear 32 is meshed with a second bevel gear 33, and the top of the second bevel gear 33 is rotatably connected to the top of the inner cavity of the linkage bin 53. The two sides of the outer wall of the second bevel gear 33 are They are all meshed with a gear shaft 34, and one side of the outer wall of the gear shaft 34 is rotatably connected to the inner wall of the linkage warehouse 53, the top of the gear shaft 34 is fixedly connected with a semicircular gear 35, and one side of the outer wall of the semicircular gear 35 is meshed with a second tooth plate 36, the outer wall of the second tooth plate 36 is slidably connected to the top of the inner wall of the linkage warehouse 53, and one end of the second tooth plate 36 is fixedly connected to an elastic push rod 37, one end of the elastic push rod 37 is fixedly connected to a push block 38, and one side of the outer wall of the push block 38 is overlapped with a cap 39, and the cap 39 overlaps the top of the lithium battery 12.

[0024] During operation, a linkage bin 53 is arranged on the top of the reset plate 28. When the moving block 20 pushes the push block 22 to move, the first tooth plate 31 arranged at one end of the top of the push block 22 drives the first bevel gear 32 arranged on both sides of the inner wall of the linkage bin 53 (the first bevel gear 32 and the second bevel gear 33 are both composed of the inclined surface of a conventional bevel gear and a right-angle gear). The second bevel gear 33 is arranged on the top of the inner cavity of the linkage bin 53, so that the inclined surface of the first bevel gear 32 drives the second bevel gear 33. The inclined surface rotates, and the gear shaft 34 is arranged on both sides of the inner wall of the linkage chamber 53, so that the right-angle gear surfaces on both sides of the outer wall of the second bevel gear 33 drive the gear shaft 34 to rotate, so that the semicircular gear 35 arranged on the top of the gear shaft 34 drives the second tooth plate 36 arranged on the inner wall of the linkage chamber 53 to move. When the push block 22 drives the first tooth plate 31, the first bevel gear 32 moves from one end of the first tooth plate 31 to the other end, and the second tooth plate 36 extends out of the linkage chamber 53, an elastic push rod 37 is arranged at one end of the second tooth plate 36, and the elastic push rod 37 is arranged at one end of the second tooth plate 36. A pushing block 38 is provided at one end of the push rod 37. When the turntable 9 drives the fixed bin 10 to move to the feeding port of the feeding tube 5, the cap 39 falls along the feeding tube 5 to the upper surface of the lithium battery 12, and the cap 39 is pushed away from the center of the upper surface of the lithium battery 12 by the pushing block 38. Since the bottom of the pushing block 38 is made of ultra-fine non-woven fabric, the pushing block 38 can clean the fine dust attached to the surface of the lithium battery 12 when it moves on the surface of the lithium battery 12. At the same time, since the matching degree between the second tooth plates 36 and the semicircular gears 35 on the other two sides is low, When the cap 39 is about to detach from the upper surface of the lithium battery 12, the second tooth plates 36 on the other two sides support the outer wall of the cap 39 and use the elastic push rod 37 to buffer the cap 39, so that the cap 39 is moved back to the center of the upper surface of the lithium battery 12. This further solves the problem that when the cap 39 is placed on the surface of the lithium battery 12 and moves to the bottom of the laser welder 6 during use, it is affected by inertia, causing the cap 39 to easily shift, thereby affecting the welding quality of the lithium battery 12.

[0025] The inner wall of the gear ring 16 is meshed with a second gear screw 45 between the first gear screws 17 on both sides, and the bottom of the second gear screw 45 is rotatably connected to the bottom of the inner wall of the fixed warehouse 10, and the bottom of the outer wall of the second gear screw 45 is slidably connected to a linkage gear 46, one side of the outer wall of the linkage gear 46 is meshed with a third tooth plate 47, and one side of the outer wall of the third tooth plate 47 is fixedly connected to one side of the outer wall of the pushing bottom plate 43, both ends of the outer wall of the third tooth plate 47 are fixedly connected with elastic frames 48, and the inner wall of the elastic frame 48 is slidably connected with a tooth block 49, the outer wall of the tooth block 49 is overlapped with one side of the outer wall of the linkage gear 46, and a plurality of slots 52 are opened at the bottom of one side of the inner wall of the fixed warehouse 10, and the inner wall of the slot 52 is slidably connected to the outer wall of the pushing bottom plate 43.

[0026] During operation, a second gear screw 45 is arranged on the inner wall of the gear ring 16 between the first gear screws 17 on both sides. When the gear ring 16 rotates, it drives the linkage gear 46 arranged at the bottom of the outer wall of the second gear screw 45. The linkage gear 46 drives the third tooth plate 47 arranged on one side of the outer wall of the pushing base plate 43, so that the pushing base plate 43 is received in a plurality of slots 52 arranged at the bottom of one side of the inner wall of the fixed warehouse 10. By arranging elastic frames 48 at both ends of the outer wall of the third tooth plate 47 and tooth blocks 49 on the inner wall of the elastic frame 48, when the linkage gear 46 drives the third tooth plate 47 to move to the end, the linkage gear 46 drives the tooth blocks 49 in the elastic frame 48 to move repeatedly and no longer pushes the pushing base plate 43 to continue to move. When the second gear screw 45 drives the linkage gear 46 to rotate in the opposite direction, one side of the linkage gear 46 contacts the third tooth plate 47 again, thereby pushing the pushing base plate 43 to extend out of the slot 52.

[0027] The bottom of the inner wall of the fixed bin 10 is rotatably connected to a plurality of electric ball screws 40, and one end of the electric ball screws 40 is rotatably connected to the middle of the inner wall of the fixed bin 10, the outer wall of the electric ball screws 40 is threadedly connected to a lifting platform 41, the inner wall of the lifting platform 41 is fixedly connected to a plurality of auxiliary frames 42, the inner wall of the auxiliary frames 42 is slidably connected to a pushing base plate 43, and one end of the top of the pushing base plate 43 is fixedly connected to a special-shaped block 44.

[0028] During operation, a plurality of electric ball screws 40 are arranged at the bottom of the inner wall of the fixed bin 10, and the electric ball screws 40 are used to push the lifting platform 41 to move up and down in the fixed bin 10. A plurality of auxiliary frames 42 are arranged on the inner wall of the lifting platform 41, so that the pushing bottom plate 43 arranged in the auxiliary frame 42 can be used to push the lithium battery 12 to a suitable position, so that the clamping block 24 can clamp and fix the lithium battery 12. A special-shaped clamping block 44 is arranged at one end of the top of the pushing bottom plate 43 to engage the bottom of the lithium battery 12 to prevent the lithium battery 12 from shifting during movement, which makes it difficult for the clamping block 24 to fix the lithium battery 12.

[0029] Slide grooves 50 are formed on both sides of the outer wall of the second gear screw 45 , and the inner walls of the slide grooves 50 are slidably connected with connecting blocks 51 , and one end of the connecting block 51 is fixedly connected to the inner wall of the linkage gear 46 .

[0030] During operation, by setting slide grooves 50 on both sides of the outer wall of the second gear screw 45, the connecting blocks 51 set at both ends of the inner wall of the linkage gear 46 are embedded in the slide grooves 50. When the electric ball screw 40 drives the lifting platform 41 to move, the linkage gear 46 is always in the auxiliary frame 42, and the second gear screw 45 can drive the linkage gear 46 to control the extension and retraction of the pushing base plate 43.

[0031] A process for laser welding a combined cap for a lithium battery, the process adopts the above-mentioned welding equipment for laser welding a combined cap for a lithium battery, and the method is as follows: S1: Place the lithium battery 12 into the fixed bin 10, support the bottom of the lithium battery 12 with the push bottom plate 43, and then start the electric ball screw 40 to make the lifting platform 41 push the push bottom plate 43 to move the lithium battery 12 to a suitable position for subsequent clamping and fixing; S2: Use the gear ring 16 to drive the first gear screw 17, so that the moving block 20 arranged on the outer wall thereof pushes the pushing block 22, thereby clamping and fixing the lithium battery 12 and pushing the lithium battery 12 to a suitable position for subsequent welding; S3: By setting a linkage bin 53 on the top of the push block 22, when the push block 22 moves, the first tooth plate 31 is used to drive the first bevel gear 32 and the second bevel gear 33 in the linkage bin 53, so that the second tooth plate 36 set on the inner wall pushes the push block 38, limits the cap 39, and cleans the surface of the lithium battery 12 at the same time.

[0032] The following is a detailed description of the working principle of the welding equipment and process of the laser welding combined cap for lithium batteries.

[0033] like Figure 1-12As shown, by setting a support column 3 at the center of the top of the welding body 1, the cap 39 material is placed in the storage box 4 set on one side of the top of the support column 3, and by setting a limiting shell 7 in the middle of the outer wall of the support column 3, the turntable 9 set on the inner wall of the limiting shell 7 is started, so that the several fixed bins 10 set on the top of the turntable 9 are slowly moved to the bottom of the feeding pipe 8 set at one end of the top of the limiting shell 7, and the lithium battery 12 raw materials are sequentially slid from the feeding pipe 8 along the ramp 11 into the fixed bin 10, and the electric ball screw 40 is started to drive the lifting platform 41, so that the pushing bottom plate 43 set on the inner wall of the lifting platform 41 pushes the lithium battery 12 to be adjusted in the fixed bin 10, and the detector set in the fixed bin 10 is used to make the position of the lithium battery 12 slightly lower than the pushing block 38, and at this time, the rotating disk 9 is turned to rotate. The disk 9 drives the fixed bin 10 to move to the feeding port of the feeding tube 5, and then the electric gate 21 is started to feed the cap 39 from the storage box 4 into the fixed bin 10 along the feeding tube 5, so that the cap 39 is on the top of the lithium battery 12, and the transmission gear 14 set at the output end of the starting motor 13 drives the ring gear 16 to rotate, so that the first gear screw 17 drives the moving block 20 set on the outer wall to move downward, and pushes the push block 22 contacting the inclined surface of the moving block 20 to move toward the lithium battery 12, so that the elastic telescopic rod 23 set at one end of the outer wall of the push block 22 pushes the clamping block 24 to clamp and fix the outer wall of the lithium battery 12, and when the moving block 20 moves downward, the ring gear 16 drives the second gear screw 45 to rotate, so that the second gear screw 45 The linkage gear 46 is driven to slowly pull the push bottom plate 43 out from the bottom of the lithium battery 12. A linkage bin 53 is set on the top of the reset plate 28. When the moving block 20 pushes the push block 22 to move, the first tooth plate 31 set at one end of the top of the push block 22 is used to drive the first bevel gear 32 set on both sides of the inner wall of the linkage bin 53 (the first bevel gear 32 and the second bevel gear 33 are both composed of the inclined surface of the conventional bevel gear and the right-angle gear). The second bevel gear 33 is set at the top of the inner cavity of the linkage bin 53, so that the inclined surface of the first bevel gear 32 drives the inclined surface of the second bevel gear 33 to rotate, and the gear shafts 34 are set on both sides of the inner wall of the linkage bin 53, so that the outer wall of the second bevel gear 33 The right-angle gear surfaces on both sides drive the gear shaft 34 to rotate, so that the semicircular gear 35 set on the top of the gear shaft 34 drives the second tooth plate 36 set on the inner wall of the linkage warehouse 53 to move. When the push block 22 drives the first tooth plate 31, the first bevel gear 32 moves from one end of the first tooth plate 31 to the other end, and the second tooth plate 36 extends out of the linkage warehouse 53. By setting an elastic push rod 37 at one end of the second tooth plate 36, and setting a push block 38 at one end of the elastic push rod 37, when the turntable 9 drives the fixed warehouse 10 to move to the feeding port of the feeding pipe 5, the cap 39 falls along the feeding pipe 5 to the upper surface of the lithium battery 12, and the push block 38 is used to push the cap 39 away from the center of the upper surface of the lithium battery 12. Since the material of the bottom of the push block 38 is ultra-fine non-woven fabric,The push block 38 can clean the fine dust attached to the surface of the lithium battery 12 when it moves on the surface of the lithium battery 12. At the same time, since the second tooth plates 36 on the other two sides have a low matching degree with the semicircular gear 35, when the cap 39 is about to leave the upper surface of the lithium battery 12, the second tooth plates 36 on the other two sides support the outer wall of the cap 39, and use the elastic push rod 37 to buffer the cap 39, so that the cap 39 is moved back to the center of the upper surface of the lithium battery 12, further solving the problem that when the cap 39 is placed on the surface of the lithium battery 12 and moves to the bottom of the laser welder 6 during use, it is affected by inertia, causing the cap 39 to easily deviate, thereby affecting the quality of the lithium battery 12 welding. At the same time, the moving block 20 continues to move downward until the bottom of the moving block 20 touches the protrusion set at one end of the push block 22, and drives the push block 22 and the lithium battery 12 clamped by one side of the clamping block 24 to move downward until the bottom of the push block 22 is aligned with the support plate 18 and the limit plate 1 9 stops after contacting the top, so that the lithium battery 12 is in the best position for laser welding. At this time, the turntable 9 drives the fixed bin 10 to move to the bottom of the laser welder 6, and the laser welder 6 is used to weld the lithium battery 12 and the cap 39 in the fixed bin 10. Then the turntable 9 drives the fixed bin 10 to move until the fixed bin 10 moves to the top of the discharge groove 2 set on the top side of the welding body 1, and the motor 13 is started again to make the gear ring 16 rotate in the opposite direction, thereby releasing the limit of the clamping block 24 on the lithium battery 12, so that the lithium battery 12 is discharged along the discharge port set at the bottom of the fixed bin 10. At the same time, the push bottom plate 43 is slowly reset, and then the turntable 9 drives the fixed bin 10 back to the bottom of the feed pipe 8 to carry out the second round of lithium battery 12 processing, which further solves the problem that when the laser welding combined capping equipment for lithium batteries is used, when facing small batches of lithium batteries 12 with different specifications, the equipment is often frequently paused and the parameters of the equipment are adjusted, resulting in low processing efficiency of lithium batteries 12.

[0034] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A laser welding device for a lithium battery assembly cap, comprising a welding body (1), characterized in that: A discharge groove (2) is provided on one side of the top of the welding body (1); a support column (3) is fixedly connected to the center of the top of the welding body (1); a storage box (4) is fixedly connected to one side of the top of the support column (3); a feeding pipe (5) is fixedly connected to one side of the outer wall of the storage box (4); an electric brake (21) is fixedly connected to one end of the bottom of the inner wall of the feeding pipe (5); and a laser welder (6) is fixedly connected to one side of the top of the support column (3) close to the storage box (4); The middle part of the outer wall of the support column (3) is fixedly connected to a limit shell (7), and one end of the top of the limit shell (7) is fixedly connected to a feed pipe (8), the inner wall of the limit shell (7) is rotatably connected to a turntable (9), the top of the turntable (9) is fixedly connected to a plurality of fixed bins (10), the top of one side of the inner wall of the fixed bin (10) is fixedly connected to a ramp (11), the inner wall of the fixed bin (10) is provided with a lithium battery (12), and the inner wall of the fixed bin (10) is provided with a clamping mechanism.

2. The laser welding device for lithium battery cap according to claim 1 is characterized in that: The clamping mechanism comprises a motor (13) fixedly connected to one end of the top of the inner wall of the fixed bin (10), the output end of the motor (13) being fixedly connected to a transmission gear (14), and the bottom of the transmission gear (14) being rotatably connected to a baffle (15), and one side of the outer wall of the baffle (15) being fixedly connected to the inner wall of the fixed bin (10), one side of the outer wall of the transmission gear (14) being meshed with a gear ring (16), and the gear ring (16) being located between the top of the inner wall of the fixed bin (10) and the top of the baffle (15), the inner wall of the gear ring (16) being meshed with a plurality of first gear screws (17), and the bottom of the first gear screws (17) being rotatably connected to a support plate (18), and the support plate (18) ) one end of the top of the first gear screw (17) is fixedly connected to the limit plate (19), the middle part of the outer wall of the first gear screw (17) is threadedly connected to a moving block (20), and one side of the outer wall of the moving block (20) is slidably connected to the inner wall of the limit plate (19), and the side of the moving block (20) away from the limit plate (19) has a certain inclination angle, the inclined surface of the moving block (20) is slidably connected to a push block (22), one end of the outer wall of the push block (22) is fixedly connected to an elastic telescopic rod (23), the output end of the elastic telescopic rod (23) is fixedly connected to a clamping block (24), and one side of the outer wall of the clamping block (24) is overlapped with the top of one side of the outer wall of the lithium battery (12).

3. The laser welding assembly cap welding device for lithium batteries according to claim 2 is characterized in that: The bottom of the support plate (18) is fixedly connected to an electric telescopic rod (25), the bottom of the electric telescopic rod (25) is fixedly connected to a limit block (26), and the bottom of the limit block (26) is fixedly connected to a plurality of support rods, and the bottom of the support rod is fixedly connected to the bottom of the inner wall of the fixed bin (10), a groove is provided in the middle of one end of the top of the limit block (26), and the inner wall of the groove is slidably connected to the outer wall of the support plate (18), and the two ends of the top of the limit block (26) are fixedly connected to spring return rods (27), and the spring return rods (27) are fixedly connected to the bottom of the inner wall of the fixed bin (10). The top of the reset rod (27) is fixedly connected to the top of the inner wall of the fixed bin (10); a reset plate (28) is slidably connected to the middle of the outer wall of the spring reset rod (27); two ends of one side of the outer wall of the reset plate (28) are slidably connected to plug plates (29); one end of the plug plate (29) is fixedly connected to two sides of the outer wall of the push block (22); two ends of the outer wall of the reset plate (28) close to the plug plate (29) are fixedly connected to springs (30); one end of the spring (30) is fixedly connected to one side of the outer wall of the plug plate (29).

4. The laser welding assembly cap welding device for lithium batteries according to claim 3 is characterized in that: The top of the reset plate (28) is fixedly connected to a linkage bin (53), and the inner wall of the linkage bin (53) is slidably connected to the outer wall of the push block (22); one end of the top of the push block (22) is fixedly connected to a first toothed plate (31); the top of the first toothed plate (31) is meshed with a first bevel gear (32), and both sides of the outer wall of the first bevel gear (32) are rotatably connected to the inner wall of the linkage bin (53); the top of the first bevel gear (32) is meshed with a second bevel gear (33), and the top of the second bevel gear (33) is rotatably connected to the top of the inner cavity of the linkage bin (53), and both sides of the outer wall of the second bevel gear (33) are meshed with the inner wall of the linkage bin (53). A gear shaft (34) is provided, and one side of the outer wall of the gear shaft (34) is rotatably connected to the inner wall of the linkage bin (53); a semicircular gear (35) is fixedly connected to the top of the gear shaft (34); a second toothed plate (36) is meshed on one side of the outer wall of the semicircular gear (35); the outer wall of the second toothed plate (36) is slidably connected to the top of the inner wall of the linkage bin (53); one end of the second toothed plate (36) is fixedly connected to an elastic push rod (37); one end of the elastic push rod (37) is fixedly connected to a push block (38); one side of the outer wall of the push block (38) is overlapped with a cover cap (39); and the cover cap (39) overlaps the top of the lithium battery (12).

5. The laser welding assembly cap welding device for lithium batteries according to claim 4 is characterized in that: The bottom of the inner wall of the fixed bin (10) is rotatably connected to a plurality of electric ball screws (40), and one end of the electric ball screw (40) is rotatably connected to the middle of the inner wall of the fixed bin (10). The outer wall of the electric ball screw (40) is threadedly connected to a lifting platform (41), the inner wall of the lifting platform (41) is fixedly connected to a plurality of auxiliary frames (42), the inner wall of the auxiliary frame (42) is slidably connected to a pushing bottom plate (43), and one end of the top of the pushing bottom plate (43) is fixedly connected to a special-shaped clamping block (44).

6. The laser welding assembly cap welding device for lithium batteries according to claim 5 is characterized in that: The inner wall of the gear ring (16) is meshed with a second gear screw (45) between the first gear screws (17) on both sides, and the bottom of the second gear screw (45) is rotatably connected to the bottom of the inner wall of the fixed bin (10), and the bottom of the outer wall of the second gear screw (45) is slidably connected to a linkage gear (46), one side of the outer wall of the linkage gear (46) is meshed with a third tooth plate (47), and one side of the outer wall of the third tooth plate (47) is fixedly connected to one side of the outer wall of the push bottom plate (43).

7. The laser welding assembly cap welding device for lithium batteries according to claim 6 is characterized in that: Both ends of the outer wall of the third tooth plate (47) are fixedly connected to elastic frames (48), and the inner wall of the elastic frame (48) is slidably connected to a tooth block (49), and the outer wall of the tooth block (49) overlaps one side of the outer wall of the linkage gear (46).

8. The laser welding assembly cap welding device for lithium batteries according to claim 7 is characterized in that: Slide grooves (50) are provided on both sides of the outer wall of the second gear screw (45), and the inner walls of the slide grooves (50) are slidably connected to connecting blocks (51), and one end of the connecting block (51) is fixedly connected to the inner wall of the linkage gear (46).

9. The laser welding assembly cap welding device for lithium batteries according to claim 8, characterized in that: A plurality of slots (52) are provided at the bottom of one side of the inner wall of the fixed bin (10), and the inner walls of the slots (52) are slidably connected to the outer wall of the pushing bottom plate (43).

10. A process for laser welding a combined cap for a lithium battery, the process using the welding equipment for laser welding a combined cap for a lithium battery as claimed in claim 9, characterized in that: The method looks like this: S1: placing the lithium battery (12) into the fixed bin (10), supporting the bottom of the lithium battery (12) with the push bottom plate (43), and then starting the electric ball screw (40) to enable the lifting platform (41) to push the push bottom plate (43), thereby moving the lithium battery (12) to a suitable position for subsequent clamping and fixing; S2: using the gear ring (16) to drive the first gear screw (17) so that the moving block (20) provided on the outer wall thereof pushes the pushing block (22), thereby clamping and fixing the lithium battery (12) and pushing the lithium battery (12) to a suitable position to facilitate subsequent welding thereof; S3: By arranging a linkage bin (53) on the top of the push block (22), when the push block (22) moves, the first tooth plate (31) drives the first bevel gear (32) and the second bevel gear (33) in the linkage bin (53), so that the second tooth plate (36) arranged on the inner wall thereof pushes the push block (38), limits the position of the cover cap (39), and cleans the surface of the lithium battery (12) at the same time.

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