Automatic welding device for lithium battery explosion-proof sheet

Abstract

The utility model discloses an automatic welding device of lithium battery explosion -proof piece, including welding transmission device, the laser welding mechanism of arrangement in the welding transmission device one side and the welding jacking mechanism of arrangement below the welding transmission device, the top of welding transmission device still is equipped with the top flat positioning mechanism at the welding jacking mechanism department, the laser welding mechanism includes the welding fixed frame of arrangement in the welding transmission device one side, the welding X axle translation mechanism of arrangement in the welding fixed frame top along the transmission direction of welding transmission device, the welding Y axle translation mechanism of being connected with the welding X axle translation mechanism, the welding translation frame of being connected with the welding Y axle translation mechanism and the welding Z axle elevating system of installation in welding translation frame one end. The utility model discloses through the mutual cooperation of welding transmission device, laser welding mechanism and welding jacking mechanism, can realize the automatic welding of battery explosion -proof piece, and the degree of automation is high, and the working efficiency is high, and the practicality is strong.

Description

Technical Field

[0001] This utility model relates to the field of automation technology, and in particular to an automatic welding device for lithium battery explosion-proof sheets. Background Technology

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

[0003] The purpose of this invention is to provide an automatic welding device for lithium battery explosion-proof sheets. Through the cooperation of a welding transmission device, a laser welding mechanism, and a welding lifting mechanism, the automatic welding of battery explosion-proof sheets can be achieved. The device has a high degree of automation, high work efficiency, and strong practicality. To achieve the above objectives, the following technical solution is adopted: An automatic welding device for lithium battery explosion-proof sheets includes a welding transmission device, a laser welding mechanism arranged on one side of the welding transmission device, and a welding lifting mechanism arranged below the welding transmission device. A top-leveling positioning mechanism is also arranged above the welding transmission device corresponding to the welding lifting mechanism. The laser welding mechanism includes a welding fixing frame arranged on one side of the welding transmission device, a welding X-axis translation mechanism arranged on top of the welding fixing frame along the transmission direction of the welding transmission device, a welding Y-axis translation mechanism connected to the welding X-axis translation mechanism, a welding translation frame connected to the welding Y-axis translation mechanism, and a welding Z-axis lifting mechanism installed at one end of the welding translation frame. The welding Z-axis lifting mechanism also drives a welding lifting plate, and a laser welding head is installed on one side of the welding lifting plate. The output end of the laser welding head is fitted with a first dust extraction hood, and a first dust extraction pipe is installed on the first dust extraction hood. A dust extraction adapter pipe connected to the first dust extraction pipe is installed on one side of the welding translation frame. Two first protective covers are connected to the top of the welding transmission device, the two first protective covers are arranged opposite each other, and the top-leveling positioning mechanism is located between the two first protective covers.

[0004] Furthermore, the welding transfer device includes two welding transfer frames arranged in parallel and spaced apart, and a conveyor belt mechanism is installed on each side of the two welding transfer frames.

[0005] Furthermore, the welding lifting mechanism includes a lifting base plate, a first lifting cylinder mounted on the top of the lifting base plate, a first lifting plate connected to the first lifting cylinder, a first support column connected to the middle of the top of the first lifting plate, and a second lifting plate arranged perpendicular to the length direction of the first lifting plate and connected to the first support column; a first clamping mechanism is mounted on the first lifting plate along its length direction, and the first clamping mechanism also drives and connects two first sliding plates; a first clamping plate is connected to the top of each first sliding plate along the vertical direction, and a first clamping block is also connected to the top of the first clamping plate; a second clamping mechanism is mounted on the second lifting plate along its length direction, and the second clamping mechanism also drives and connects two second sliding plates; a second clamping plate is also connected to the top of each second sliding plate along the vertical direction.

[0006] Furthermore, the second lifting plate is also connected to an adsorption mounting plate, which is located between two second sliding plates; a third Z-axis cylinder is also installed on the top of the adsorption mounting plate, and the third Z-axis cylinder is also connected to a first adsorption seat; a first vacuum suction cup is also installed on the top of the first adsorption seat.

[0007] Furthermore, a first support is arranged on one side of each welding transfer frame; the top flat positioning mechanism includes a top flat connecting plate connected between the tops of the two first supports, and a top flat pressure plate connected to the bottom of the top flat connecting plate; the top of the top flat pressure plate is provided with a contoured card hole; the top two ends of the top flat pressure plate are provided with a first guide block, and the two sides of the top flat pressure plate are provided with a second guide block.

[0008] Furthermore, the top flat pressure plate has a first locking hole at each of its top two ends and a second locking hole on each of its sides; the first guide block has an L-shaped structure, with the L-shaped horizontal end of the first guide block connected to the top of the top flat pressure plate and the L-shaped vertical end of the first guide block extending downward after passing through the first locking hole; the second guide block has an L-shaped structure, with the L-shaped horizontal end of the second guide block connected to the top of the top flat pressure plate and the L-shaped vertical end of the second guide block extending downward after passing through the second locking hole.

[0009] Furthermore, both the lower part of the L-shaped vertical end of the first guide block and the lower part of the L-shaped vertical end of the second guide block are provided with downwardly inclined guide surfaces.

[0010] Furthermore, the bottom center of the top flat pressure plate is provided with two third guide blocks, each of which is arranged opposite to a second guide block.

[0011] By adopting the above solution, the beneficial effects of this utility model are: This invention enables automated welding of battery explosion-proof sheets through the cooperation of a welding transmission device, a laser welding mechanism, and a welding lifting mechanism. It features a high degree of automation and high work efficiency. Furthermore, the output end of the laser welding head is equipped with a first dust extraction hood, which can be connected to an external dust extractor through a dust extraction pipe to promptly remove dust and harmful gases generated during the welding process, reducing their diffusion in the working environment and effectively protecting the health of operators. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the top-flat positioning mechanism of this utility model; Figure 3 This is a schematic diagram of the top flat pressure plate of this utility model; Figure 4 This is a schematic diagram of the laser welding mechanism of this utility model; Figure 5 This is a schematic diagram of the welding lifting mechanism of this utility model; The following are explanations of the symbols in the attached diagram: 1. Welding transfer device; 2. Laser welding mechanism; 3. Welding lifting mechanism; 4. Top leveling and positioning mechanism; 21. Welding fixing frame; 22. Welding X-axis translation mechanism; 23. Welding Y-axis translation mechanism; 24. Welding translation frame; 25. Welding Z-axis lifting mechanism; 26. Welding lifting plate; 27. Laser welding head; 31. Second clamping plate; 32. First lifting cylinder; 33. First lifting plate; 34. Second lifting plate; 35. First clamping mechanism; 36. First sliding plate; 37. First... 38. Clamping plate; 39. First clamping block; 30. Second clamping mechanism; 41. Second sliding plate; 42. Top flat connecting plate; 43. Top flat pressure plate; 44. Contouring card hole; 45. First guide block; 46. Second guide block; 471. Third guide block; 272. First dust extraction hood; 273. First dust extraction pipe; 274. Dust extraction adapter pipe; 275. First protective cover; 346. Adsorption mounting plate; 347. Third Z-axis cylinder; 348. First adsorption seat; 349. First vacuum suction cup. Detailed Implementation

[0013] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0014] Reference Figures 1 to 5As shown, this utility model provides an automatic welding device for lithium battery explosion-proof sheets. In one embodiment, it includes a welding transmission device 1, a laser welding mechanism 2 arranged on one side of the welding transmission device 1, and a welding lifting mechanism 3 arranged below the welding transmission device 1. A top-leveling positioning mechanism 4 is also arranged above the welding transmission device 1 corresponding to the welding lifting mechanism 3. The laser welding mechanism 2 includes a welding fixing frame 21 arranged on one side of the welding transmission device 1, a welding X-axis translation mechanism 22 arranged on the top of the welding fixing frame 21 along the transmission direction of the welding transmission device 1, a welding Y-axis translation mechanism 23 connected to the welding X-axis translation mechanism 22, and a welding... The welding transfer frame 24 includes a welding Z-axis lifting mechanism 25 installed at one end of the welding transfer frame 24; the welding Z-axis lifting mechanism 25 is also connected to a welding lifting plate 26, and a laser welding head 27 is installed on one side of the welding lifting plate 26; the output end of the laser welding head 27 is fitted with a first dust extraction hood 271, and a first dust extraction pipe 272 is installed on the first dust extraction hood 271; a dust extraction adapter pipe 273 connected to the first dust extraction pipe 272 is installed on one side of the welding transfer frame 24; two first protective covers 274 are connected to the top of the welding transfer device 1, the two first protective covers 274 are arranged opposite to each other, and the top positioning mechanism 4 is located between the two first protective covers 274.

[0015] In this embodiment, the welding transfer device 1 connects to the upstream transfer line to receive the battery top cover, and then transfers it to the assembly position. An external robotic arm assembles the explosion-proof sheet into the corresponding hole in the battery top cover. Then, the welding transfer device 1 transfers it to the welding lifting mechanism 3, which lifts the battery top cover upward to the top leveling and positioning mechanism 4. Through the cooperation of the two, the battery top cover is fixed in the upper limit in the Z direction. Subsequently, the laser welding mechanism 2 welds the explosion-proof sheet. After welding is completed, the welding lifting mechanism 3 puts the top cover back onto the welding transfer device 1, which then transfers it to the next process. Specifically, in this embodiment, there are welding X-axis translation mechanism 22, welding Y-axis translation mechanism 23, and welding Z-axis lifting mechanism. All three components (25, 26, 27, and 28) can be used with existing linear modules. With the cooperation of these three components, the laser welding head 27 (which can be an existing product) can be driven to perform translational and lifting movements, which facilitates the welding of the explosion-proof sheet by the laser welding head 27. At the same time, the output end of the laser welding head 27 is also equipped with a first dust extraction hood 271. A dust collector can be connected to the outside through the first dust extraction pipe 272 and the dust extraction adapter pipe 273 to promptly extract the dust and harmful gases generated during the welding process, reduce their diffusion in the working environment, and effectively protect the health of the operators. To improve the dust extraction efficiency, the first dust extraction pipe 272 is provided with two sets. At the same time, two first protective covers 274 are also provided to prevent dust and foreign objects generated during the welding process from splashing to the outside.

[0016] In one embodiment, the welding transfer device 1 includes two welding transfer frames arranged in parallel and spaced apart, with a conveyor belt mechanism installed on each opposite side of the two welding transfer frames. Two sets of welding lifting mechanisms 3 are provided; one set is arranged at the assembly position to lift the battery top cover, facilitating the assembly of the explosion-proof sheet by an external robotic arm; the other welding lifting mechanism 3 is arranged at the welding position to lift the battery top cover, allowing the laser welding mechanism 2 to weld the explosion-proof sheet. In this embodiment, only the welding lifting mechanism 3 located at the welding position has a leveling and positioning mechanism 4 above it. In this embodiment, the welding transfer device 1 also includes a transfer base plate and a bidirectional lead screw. The two welding transfer frames are slidably arranged on the transfer base plate. The bidirectional lead screw is connected to the two welding transfer frames in opposite directions, respectively. One end of the bidirectional lead screw is also equipped with a handwheel, which can be manually rotated to adjust the distance between the two welding transfer frames, adapting to the transfer of battery top covers of different types and sizes, thus exhibiting strong versatility.

[0017] Preferably, in this embodiment, the welding lifting mechanism 3 includes a lifting base plate, a first lifting cylinder 32 mounted on the top of the lifting base plate, a first lifting plate 33 connected to the first lifting cylinder 32, a first support column connected to the middle of the top of the first lifting plate 33, and a second lifting plate 34 arranged perpendicular to the length direction of the first lifting plate 33 and connected to the first support column; a first clamping mechanism 35 is mounted on the first lifting plate 33 along its length direction, and the first clamping mechanism 35 also drives and connects two first sliding plates 36; a first clamping plate 37 is connected to the top of each first sliding plate 36 along the vertical direction, and a first clamping block 38 is also connected to the top of the first clamping plate 37; a second clamping mechanism 39 is mounted on the second lifting plate 34 along its length direction, and the second clamping mechanism 39 also drives and connects two second sliding plates 30; a second clamping plate 31 is also connected to the top of each second sliding plate 30 along the vertical direction.

[0018] Both the first clamping mechanism 35 and the second clamping mechanism 39 are driven by a motor and a synchronous belt. Two first sliding plates 36 are connected to one side of a synchronous belt, and two second sliding plates 30 are connected to one side of another synchronous belt. The first lifting cylinder 32 drives the first lifting plate 33 to raise the second lifting plate 34, thereby lifting the battery top cover. The first clamping mechanism 35 drives the two first sliding plates 36 to move closer together, clamping and limiting the two ends of the battery top cover via the first clamping block 38. The second clamping mechanism 39 drives the two second sliding plates 30 to move closer together. The battery top cover is clamped and limited on both sides by the second clamping plate 31. Through the cooperation of the two, the battery top cover can be centered and positioned. At the same time, in order to improve work efficiency, two first clamping plates 37 are connected to the first sliding plate 36, and two second clamping plates 31 are connected to the second sliding plate 30. Two stop bars are also connected in the middle of the second lifting plate 34. In addition, two sets of third Z-axis cylinders 342 are also provided. One third Z-axis cylinder 342 is arranged between each second sliding plate 30 and the stop bar. In this way, two products can be clamped and positioned at one time, improving work efficiency.

[0019] Meanwhile, an adsorption mounting plate 341 is also connected to the second lifting plate 34, and the adsorption mounting plate 341 is located between the two second sliding plates 30; a third Z-axis cylinder 342 is also installed on the top of the adsorption mounting plate 341, and the third Z-axis cylinder 342 is also connected to the first adsorption seat 343; a first vacuum suction cup 344 is also installed on the top of the first adsorption seat 343. The first vacuum suction cup 344 on the top of the first adsorption seat 343 can adsorb the battery top cover, ensuring its stable placement during the lifting process.

[0020] In one embodiment, a first support is arranged on one side of each welding transfer frame; the top flat positioning mechanism 4 includes a top flat connecting plate 41 connected between the tops of the two first supports, and a top flat pressure plate 42 connected to the bottom of the top flat connecting plate 41; the top of the top flat pressure plate 42 is provided with a contoured card hole 43; the top two ends of the top flat pressure plate 42 are each provided with a first guide block 44, and the two sides of the top flat pressure plate 42 are each provided with a second guide block 45. The welding lifting mechanism 3 can lift the battery top cover to the top flat pressure plate 42, thereby achieving Z-axis positioning. The top flat pressure plate 42 has a contoured locking hole 43 corresponding to the explosion-proof sheet, which facilitates the laser welding mechanism 2 to weld it. After the welding lifting mechanism 3 lifts the top cover and centers it, it will drive the first clamping plate 37 and the second clamping plate 31 away from the top cover. The top cover will continue to be lifted to the bottom of the top flat pressure plate 42. The first guide block 44 and the second guide block 45 at the bottom of the top flat pressure plate 42 will limit and fix it to ensure that it is placed stably during welding.

[0021] Preferably, the top flat pressure plate 42 has a first locking hole at each of its top two ends and a second locking hole on each of its sides; the first guide block 44 has an L-shaped structure, with its L-shaped horizontal end connected to the top of the top flat pressure plate 42 and its L-shaped vertical end extending downward after passing through the first locking hole; the second guide block 45 has an L-shaped structure, with its L-shaped horizontal end connected to the top of the top flat pressure plate 42 and its L-shaped vertical end extending downward after passing through the second locking hole; both the lower part of one side of the L-shaped vertical end of the first guide block 44 and the lower part of one side of the L-shaped vertical end of the second guide block 45 have downwardly inclined guide surfaces. The device features an inclined guide surface, allowing the battery top cover to smoothly engage between the first guide block 44 and the second guide block 45. Furthermore, the bottom center of the top flat pressure plate 42 is equipped with two third guide blocks 46, each corresponding to a second guide block 45. The third guide blocks 46 have a similar structure to the first and second guide blocks 44 and 45. This layout allows for the simultaneous positioning of two battery top covers, improving work efficiency. Additionally, the L-shaped horizontal end of the guide blocks has an oblong through hole, allowing for adaptive adjustment of the guide block's position according to product dimensions. A screw can then be tightened into the oblong through hole, making it convenient to use.

[0022] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic welding device for a lithium battery explosion vent, characterized by, The system includes a welding transfer device, a laser welding mechanism arranged on one side of the welding transfer device, and a welding lifting mechanism arranged below the welding transfer device. A top-leveling positioning mechanism is also arranged above the welding transfer device corresponding to the welding lifting mechanism. The laser welding mechanism includes a welding fixing frame arranged on one side of the welding transfer device, a welding X-axis translation mechanism arranged on top of the welding fixing frame along the transmission direction of the welding transfer device, a welding Y-axis translation mechanism connected to the welding X-axis translation mechanism, a welding translation frame connected to the welding Y-axis translation mechanism, and a welding Z-axis lifting mechanism installed at one end of the welding translation frame. The welding Z-axis lifting mechanism also drives a welding lifting plate, and a laser welding head is installed on one side of the welding lifting plate. The output end of the laser welding head is fitted with a first dust extraction hood, and a first dust extraction pipe is installed on the first dust extraction hood. A dust extraction adapter pipe connected to the first dust extraction pipe is installed on one side of the welding translation frame. Two first protective covers are connected to the top of the welding transfer device, the two first protective covers are arranged opposite each other, and the top-leveling positioning mechanism is located between the two first protective covers.

2. The apparatus for automatic welding of the explosion vent of a lithium battery according to claim 1, characterized in that, The welding transfer device includes two welding transfer frames arranged in parallel and spaced apart, and a conveyor belt mechanism is installed on each side of the two welding transfer frames.

3. The apparatus for automatic welding of the explosion vent of a lithium battery according to claim 2, characterized in that, The welding lifting mechanism includes a lifting base plate, a first lifting cylinder mounted on the top of the lifting base plate, a first lifting plate connected to the first lifting cylinder, a first support column connected to the middle of the top of the first lifting plate, and a second lifting plate arranged perpendicular to the length of the first lifting plate and connected to the first support column; a first clamping mechanism is mounted on the first lifting plate along its length, and the first clamping mechanism also drives and connects two first sliding plates; a first clamping plate is connected to the top of each first sliding plate along the vertical direction, and a first clamping block is also connected to the top of the first clamping plate; a second clamping mechanism is mounted on the second lifting plate along its length, and the second clamping mechanism also drives and connects two second sliding plates; a second clamping plate is also connected to the top of each second sliding plate along the vertical direction.

4. The apparatus for automatic welding of the explosion vent of a lithium battery according to claim 3, characterized in that, The second lifting plate is also connected to an adsorption mounting plate, which is located between two second sliding plates; a third Z-axis cylinder is also installed on the top of the adsorption mounting plate, and the third Z-axis cylinder is also connected to a first adsorption seat; a first vacuum suction cup is also installed on the top of the first adsorption seat.

5. The automatic welding device for lithium battery explosion-proof sheets according to claim 2, characterized in that, Each welding transfer frame has a first support on one side; the top flat positioning mechanism includes a top flat connecting plate connected between the tops of the two first supports, and a top flat pressure plate connected to the bottom of the top flat connecting plate; the top of the top flat pressure plate has a contoured card hole; the top two ends of the top flat pressure plate are each provided with a first guide block, and the two sides of the top flat pressure plate are each provided with a second guide block.

6. The apparatus for automatic welding of the explosion vent of a lithium battery according to claim 5, characterized in that, The top flat pressure plate has a first locking hole at each of its top two ends and a second locking hole on each of its sides. The first guide block has an L-shaped structure, with its horizontal L-shaped end connected to the top of the top flat pressure plate and its vertical L-shaped end extending downward after passing through the first locking hole. The second guide block has an L-shaped structure, with its horizontal L-shaped end connected to the top of the top flat pressure plate and its vertical L-shaped end extending downward after passing through the second locking hole.

7. The apparatus for automatic welding of the explosion vent of lithium battery according to claim 6, characterized in that, Both the lower part of the L-shaped vertical end of the first guide block and the lower part of the L-shaped vertical end of the second guide block are provided with downwardly inclined guide surfaces.

8. The apparatus for automatic welding of the explosion vent of lithium battery according to claim 7, characterized in that, The bottom center of the top flat pressure plate is also provided with two third guide blocks, each of which is set opposite to a second guide block.

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