Automatic welding mechanism and automatic assembling and welding production line

Abstract

The invention relates to the technical field of battery manufacturing, in particular to an automatic welding mechanism and an automatic assembling and welding production line. The first workbench is rotationally connected to the rack, a plurality of first bearing plates are fixedly arranged on the edge of the first workbench, and the first bearing plates are distributed on the edge of the first workbench in an array mode; the first welding assembly comprises a first welding part and a plurality of first pressing parts, the first welding part is slidably connected to the rack in the vertical direction, the output end of the first welding part is perpendicular to the rotating path of the first bearing plate, and the first pressing parts surround the output end of the first welding part, are slidably connected to the rack and are used for abutting against the convergence disc and the cover plate; according to the application, the confluence disc and the cover plate are ensured to be in close contact and close fit, the problems of pseudo soldering, non-uniform penetration and the like caused by a gap or deviation are prevented, and the uniformity of a welding seam is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of battery manufacturing, and in particular to an automatic welding mechanism and an automatic assembly welding production line. Background Art

[0002] In batteries (especially lithium-ion batteries, power batteries, etc.), the cover plate assembly is one of the key components in the battery structure, and is mainly responsible for sealing the inside of the battery, providing electrical connections, safety protection, etc. The cover plate assembly includes a cover plate, a busbar, and an explosion-proof plate. Specifically, the busbar includes a long strip of pole ears and a disc-shaped disc body. The pole ears are fixed to the disc body, the pole ears of the busbar are welded to the cover plate, and the explosion-proof plate is welded to the cover plate.

[0003] There is a cover plate assembly, a processing method thereof and a battery (CN116722278A), which includes a cover plate and a busbar, and the two are assembled and welded into a cover plate assembly. Due to the insufficient positioning accuracy of the cover plate and the busbar, it is easy to cause welding alignment deviation, thereby affecting the quality and consistency of the welded joint. The relative position between the busbar and the cover plate is offset, resulting in problems such as uneven welding penetration, cold welding or welding penetration, reducing the mechanical strength and sealing performance of the cover plate assembly, and increasing safety hazards. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic welding mechanism and an automatic assembly welding production line to solve the problem of low positioning accuracy of a cover plate and a busbar in the prior art.

[0005] The technical solution of the present invention is: an automatic welding mechanism, comprising: a frame; a first workbench, rotatably connected to the frame, a plurality of first bearing plates fixedly arranged on the edge of the first workbench, and an array of the first bearing plates distributed on the edge of the first workbench; a first loading assembly, fixedly arranged on the frame, the first loading assembly having multiple degrees of freedom, and used to convey the cover plate to the first bearing plate; a second loading assembly, fixedly arranged on the frame, the second loading assembly having multiple degrees of freedom, the first bearing plate sequentially conveys the busbar to the cover plate of the first bearing plate through the first loading assembly and the second loading assembly for assembly; a first welding assembly, comprising a first welding part and a plurality of first pressing parts, the first welding part is slidably connected to the frame in a vertical direction, the output end of the first welding part is perpendicular to the rotation path of the first bearing plate, the plurality of first pressing parts surround the output end of the first welding part and are slidably connected to the frame, and used to press the busbar and the cover plate tightly, and the first welding part welds the busbar and the cover plate located on the first bearing plate.

[0006] Preferably, the first supporting plate is provided with a busbar positioning pin, a cover plate positioning pin and a limiting groove radially arranged along the first workbench, the busbar positioning pin and the cover plate positioning pin are respectively located at two ends of the limiting groove, wherein the busbar positioning pin is used to constrain the busbar body, the cover plate positioning pin is used to constrain the cover plate, and the side wall of the limiting groove is used to limit the pole ear of the busbar; the frame is provided with a locking assembly, the locking assembly is vertically directed toward the first supporting plate close to or away from the bottom of the first welding assembly, the output end of the locking assembly is constructed to be arranged around the busbar positioning pin, and the locking assembly presses the cover plate onto the first supporting plate.

[0007] Preferably, the frame is slidably connected to a supporting member in a vertical direction, the supporting member is provided with a through hole penetrating in the vertical direction, a plurality of welding claws are fixed in the supporting member, and the plurality of welding claws extend toward the central axis of the through hole, the first pressing member is slidably connected in the through hole, the first pressing member partially slides out of the bottom surface of the supporting member to the bottom of the limiting member, and the supporting member and the welding claws together enclose an area for welding the first welding member.

[0008] The present application also provides an automatic assembly welding production line, including an automatic welding mechanism, and also including a coding device and an electrical performance testing device for coding a busbar to be subjected to a welding process, wherein the output position of the coding device is connected to the loading position of the second loading assembly, the frame is provided with a first good product conveyor belt, and the input end of the electrical performance testing device is connected to the output end of the first good product conveyor belt.

[0009] Preferably, the coding equipment includes a second workbench rotatably connected to the frame, a plurality of second supporting plates distributed in a circular array are fixedly provided at the edge of the second workbench, a second movable member moving in a vertical direction is fixedly provided on the frame on the peripheral side of the second workbench, a laser coder and a smoothing member are fixedly provided at the output end of the second movable member, the smoothing member is constructed as a hollow cylindrical structure for pressing the edge of the disk body, and the laser coder is located inside the smoothing member for coding the disk body.

[0010] Preferably, the electrical performance testing equipment includes a third workbench, which is rotatably connected to the frame, and a plurality of third carrying plates for carrying products are fixedly provided on the outer edge of the third workbench, and a conveying assembly, an insulation detection assembly and a resistance detection assembly are provided on the outer peripheral side of the third workbench, and the conveying assembly is used to convey the product to the third carrying plate, and the third workbench rotates to pass through the insulation detection assembly and the resistance detection assembly in sequence.

[0011] Preferably, a bursting disc assembly welding device is provided at the input end of the automatic welding mechanism, and the bursting disc assembly welding device includes a fourth workbench for carrying a cover plate and a bursting disc composition, and the fourth workbench is rotatably connected to a frame, and the frame is fixed with a second welding assembly for welding the cover plate and the bursting disc.

[0012] Preferably, the frame at the output end of the automatic welding mechanism is fixed with a fourth conveying assembly, a film supply feeder and a film picking and placing assembly, the fourth conveying assembly is used to transport the welded products, the film supply feeder is rotatably connected to the frame, and the film picking and placing assembly has multiple degrees of freedom to fit the film on the film supply feeder onto the product.

[0013] Preferably, the film picking and placing assembly includes a carrying platform and a film sticking member both fixed to the frame, the top of the carrying platform is concave to form a channel for the roll film to pass through, a pair of pressure plates are fixed in the channel, the pressure plates are arranged and fixed to the side walls of the channel along the length direction of the channel, and there is a gap between the pressure plates and the bottom of the channel for the roll film to pass through, and the film sticking member with three degrees of freedom moves between the carrying platform and the fourth conveying assembly to remove the film adhered to the roll film and stick it on the product.

[0014] Preferably, the frame is fixed with a film cleaning platform, and the film cleaning platform is within the travel range of the film sticking member. When the film at the end of the film sticking member is not adhered to the product, the film sticking member moves to the film cleaning platform to adhere the film sticking member to the film cleaning platform.

[0015] Compared with the prior art, the advantages of the present invention are: A number of first pressing parts surround the welding head, and the busbar and the cover plate are pressed tightly before welding to ensure that the two are closely fitted to prevent problems such as cold welding and uneven penetration due to gaps or offsets. The first pressing parts continuously apply pressure during the welding process to make the busbar and the cover plate in close contact, further ensuring a uniform weld and improving the mechanical strength and sealing performance of the welded joint. The output end of the first welding part is perpendicular to the rotation path of the first supporting plate, ensuring that the welding head is always welded in a fixed direction, avoiding welding deviation or welding penetration due to angle deviation, and at the same time improving production efficiency and product consistency, and enhancing the safety and reliability of lithium batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 This is a structural schematic diagram of an automatic welding mechanism according to the present invention; Figure 2 is a structural schematic diagram of the first supporting plate of the present invention; Figure 3 It is a structural schematic diagram of the first feeding assembly of the present invention; Figure 4 It is a structural schematic diagram of the second feeding assembly of the present invention; Figure 5 is a schematic structural diagram of the first welding assembly of the present invention; Figure 6 A top view of the carrier of the present invention; Figure 7 It is a structural schematic diagram of the locking assembly of the present invention; Figure 8 This is a structural schematic diagram of an automatic assembly welding production line according to the present invention; Fig. 9 It is a structural schematic diagram of the coding device of the present invention; Fig.10 It is a structural schematic diagram of the electrical performance testing equipment of the present invention; Fig.11 This is a schematic diagram of the structure of the explosion-proof disk assembly welding equipment of the present invention; Fig.12 It is a structural schematic diagram of the film sticking equipment of the present invention; Fig.13 It is a schematic diagram of the structure of the membrane assembly for taking and placing the membrane assembly according to the present invention.

[0017] Description of reference numerals: 1. Automatic welding mechanism; 11. Frame; 12. First workbench; 13. First bearing plate; 131. Busbar positioning pin; 132. Cover plate positioning pin; 133. Limiting groove; 14. First feeding assembly; 141. First positioning member; 1411. First fixing part; 1412. First rotating part; 1413. First clamping part; 142. First transfer member; 1421. First moving part; 1422. First adsorption end; 15. Second feeding assembly; 151. Second transfer member; 152. Second adsorption end; 16. First welding assembly; 161. First moving member; 162, first welding part; 163, first pressing part; 164, bearing part; 165, through hole; 166, welding pressure claw; 17, locking assembly; 171, locking ring; 172, locking plate; 181, first visual inspection assembly; 182, second visual inspection assembly; 19, first conveying assembly; 191, first good product conveyor belt; 192, first unloading drive member; 193, first good product conveyor belt; 2, coding equipment; 21, second workbench; 22, second bearing plate; 23, third loading assembly; 231, loading tray; 232, first robotic arm; 24, third Visual inspection component; 25, fourth visual inspection component; 26, coding component; 261, second moving part; 262, laser coding device; 263, smoothing part; 27, second conveying component; 271, second good product conveyor belt; 272, second unloading driving component; 273, second good product conveyor belt; 3, electrical performance testing equipment; 31, third workbench; 32, handling component; 33, resistance detection component; 34, insulation detection component; 35, third bearing plate; 4, explosion-proof disk assembly welding equipment; 41, fourth workbench; 42, fourth bearing plate; 43, fourth loading component; 431. Flexible vibration disk; 432. Third moving part; 44. Fifth visual inspection component; 45. Sixth visual inspection component; 46. Second welding component; 47. Third conveying component; 5. Film pasting equipment; 51. Film supply feeder; 52. Film pick-up and placement component; 521. Carrying platform; 522. Film pasting part; 523. Pressing plate; 53. Fourth conveying component; 531. Guide rail; 532. Carrying block; 54. Film cleaning platform; 100. Cover plate; 200. Converging plate; 2001. Plate body; 2002. Ear; 300. Explosion-proof disk; 400. Film pasting; 500. Product. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0020] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example 1

[0021] like Figure 1 As shown, an automatic welding mechanism includes a frame 11 and a first workbench 12, the first workbench 12 is connected to the top of the frame 11 by a motor, a plurality of first supporting plates 13 distributed in an array are fixedly provided on the edge of the first workbench 12, the first supporting plates 13 are used to support the stacked cover plates 100 and the busbar 200, and a first loading assembly 14, a second loading assembly 15 and a first welding assembly 16 are fixedly provided on the frame 11 on the outer peripheral side of the first workbench 12 to automatically weld the cover plates 100 and the busbar 200 located on the first supporting plates 13 into one.

[0022] like Figure 1 and Figure 2 As shown, in the present embodiment, there are eight first supporting plates 13, and the eight first supporting plates 13 are evenly distributed on the edge of the first workbench 12. The frame 11 is provided with six operating stations corresponding to the first supporting plates 13, including a first loading station, a second loading station, a first pre-welding inspection station, a first welding station, a first post-welding inspection station, an air cooling station, a good product unloading station and a defective product unloading station. In other embodiments, the corresponding stations on the frame 11 can be increased or decreased according to actual working conditions.

[0023] like Figure 2As shown, specifically, the first carrier plate 13 is provided with a busbar positioning pin 131, a cover plate positioning pin 132 and a limiting groove 133, the limiting groove 133 is arranged along the radial direction of the first workbench 12, and the busbar positioning pin 131 and the cover plate positioning pin 132 are arranged at both ends of the limiting groove 133. Among them, the cover plate positioning pin 132 is located on the side of the limiting groove 133 away from the rotation center of the first workbench 12, and when the cover plate 100 is attached to the first carrier plate 13, the cover plate positioning pin 132 is inserted into the air leakage hole of the cover plate 100. The bus plate positioning pin 131 is located on the side of the limiting groove 133 close to the rotation center of the first workbench 12. When the disk body 2001 is attached to the first supporting plate 13, the bus plate positioning pin 131 is inserted into the hole of the disk body 2001. At this time, the pole ear 2002 passes through the limiting groove 133 and the notch of the cover plate 100, and overlaps with part of the cover plate 100. The overlapping part is the area to be welded between the pole ear 2002 and the cover plate 100.

[0024] like Figure 3 As shown, the first loading assembly 14 is fixedly arranged at the first loading station, and the first loading assembly 14 includes a first positioning member 141 and a first transfer member 142. The first positioning member 141 includes a first fixed portion 1411, a first rotating portion 1412 and a first clamping portion 1413. The first fixed portion 1411 is fixedly arranged at the first loading station, and the first rotating portion 1412 is rotatably connected to the first fixed portion 1411 with a vertical axis as a rotating axis. The top of the first rotating portion 1412 is configured as a plane for carrying the cover plate 100, so as to adjust the angle of the cover plate 100 so that the air leakage holes of the cover plate 100 can correspond to the corresponding limiting structures on the corresponding first supporting plate 13. The first clamping portion 1413 is slidably connected to the top of the first rotating portion 1412 in pairs, and the first clamping portion 1413 is used to clamp the outer surface of the cover plate 100 to accurately locate the position of the cover plate 100.

[0025] The first transfer member 142 includes a first moving part 1421 capable of moving in vertical and horizontal directions and a first adsorption end 1422 for adsorbing the cover plate 100. The first moving part 1421 is fixedly disposed at the first loading station. The horizontal movement direction of the first moving part 1421 is along the radial direction of the first workbench 12. The first adsorption end 1422 is fixedly disposed at the output end of the first moving part 1421. The first adsorption end 1422 transfers the cover plate 100 on the first positioning member 141 to the first carrying plate 13.

[0026] like Figure 4As shown, the second loading assembly 15 includes a second transfer member 151 and a second adsorption end 152. The second transfer member 151 is fixed at the second loading station. The second transfer member 151 has a radial degree of freedom of translation along the first workbench 12 and a vertical degree of freedom of translation. The second adsorption end 152 is fixed at the output end of the second transfer member 151, and is used to transfer the busbar 200 to the first supporting plate 13, so that the busbar 200 is inserted into the busbar positioning pin 131, and the busbar 200 partially overlaps with the cover plate 100.

[0027] like Figure 1 As shown, the first pre-welding inspection station is fixedly provided with a first visual inspection component 181, and the first post-welding inspection station is fixedly provided with a second visual inspection component 182. In this embodiment, both the first visual inspection component 181 and the second visual inspection component 182 use visual modules, and the visual modules are arranged toward the first carrier plate 13 of the corresponding station. The first visual inspection component 181 is used to detect the positioning accuracy of the cover plate 100 and the busbar 200, and the second visual inspection component 182 is used to detect whether the welding structure of the cover plate 100 and the busbar 200 is good.

[0028] In this embodiment, the first visual inspection component 181 is provided with a deviation correction component to fine-tune the position of the cover plate 100 and the busbar 200 located at the pre-welding inspection station to ensure welding accuracy. Preferably, the deviation correction component is a pneumatic push rod.

[0029] The first welding assembly 16 is fixedly mounted at the first welding station, and includes a first movable member 161 and a first welding member 162. The first movable member 161 has a degree of freedom of translation in the vertical direction, that is, the first movable member 161 is slidably connected to the frame 11 in the vertical direction, and an output end of the first movable member 161 is opposite to the first supporting plate 13 located at the first welding station, that is, the output end of the first movable member 161 vertically overlaps with the rotation path of the first supporting plate 13.

[0030] like Figure 5 and Figure 6As shown, the first welding station is provided with a bearing 164, and the bearing 164 is slidably connected to the frame 11 in the vertical direction, and the bearing 164 overlaps vertically with the rotation path of the first bearing plate 13. In the present embodiment, the bearing 164 is constructed as a rectangular parallelepiped structure. The bearing 164 is provided with a through hole 165 that penetrates in the vertical direction, and the bearing 164 protrudes with a plurality of welding pressure claws 166 toward the central axis of the through hole 165, and the welding pressure claws 166 further define an area in the through hole 165 in the vertical direction. Preferably, the side of the welding pressure claw 166 toward the center of the through hole 165 is configured as a plane in the vertical direction. More preferably, there are four welding pressure claws 166, two by two in a pair, and in the vertical direction, the four welding pressure claws 166 enclose a space that is approximately rectangular, and there is a spacing between two adjacent welding pressure claws 166.

[0031] The bottom surface of the carrier 164 is a curved surface that protrudes in the center and bends upward on the outer peripheral side, and the bottom of the welding pressure claw 166 is a curved surface that conforms to the curvature, so that the bottom of the welding pressure claw 166 close to the center of the through hole 165 is the lowest point of the carrier 164. When the carrier 164 abuts against the busbar 200, the welding pressure claw 166 and the busbar 200 are in approximate line contact to reduce the contact area between the welding pressure claw 166 and the busbar 200.

[0032] The support member 164 is internally provided with a plurality of first pressing members 163 , which are slidably connected to the support member along the vertical direction, and are partially located on the support member 164 , and partially extend downward from the support member 164 , and are elastically slidably connected to the support member 164 via springs.

[0033] In this embodiment, there are four groups of first pressing pieces 163 , one first pressing piece 163 is disposed between two adjacent welding jaws 166 , and the first pressing pieces 163 and the welding jaws 166 together form a vertical channel for the first welding piece 162 to be welded.

[0034] like Figure 7As shown, the frame 11 is fixed with a locking assembly 17, which has a degree of freedom of translation in the vertical direction, and the locking assembly 17 approaches or moves away from the busbar 200 located on the first welding station in the vertical direction. The locking assembly 17 includes a locking ring 171 and a locking plate 172, and the locking ring 171 is configured as a hollow ring structure. The locking ring 171 is slidably connected to the frame 11. When the locking ring 171 presses the disc body 2001, the busbar positioning pin 131 is located in the middle of the locking ring 171, thereby ensuring that the disc body 2001 is tightly pressed against the first carrier plate 13, while avoiding interference between the busbar positioning pin 131 and the locking ring 171. The locking plate 172 is fixedly connected to the outer peripheral side of the locking ring 171, and extends along the radial direction of the first worktable 12 toward the rotation center direction away from the first worktable 12. The locking plate 172 is constructed into a horizontal plate structure. When the locking plate 172 abuts against the disk body 2001, the locking plate 172 abuts against the pole ear 2002, and the length of the locking plate 172 is less than the length of the pole ear 2002, that is, the length of the locking plate 172 extends to the entrance of the cover plate 100, and does not extend to the area to be welded between the pole ear 2002 and the cover plate 100.

[0035] In order to ensure high-precision welding between the busbar 200 and the cover plate 100, the locking assembly 17 and the first welding assembly 16 achieve precise positioning and stable welding through staged synergy. First, the hollow ring structure of the locking ring 171 presses the busbar 200 downward to make it fit tightly with the first carrier plate 13. At the same time, the hollow design avoids the busbar positioning pin 131 to ensure accurate center positioning of the disc body 2001; then, the locking plate 172 fixed on the outer peripheral side of the locking ring 171 presses the pole ear 2002 horizontally to eliminate the gap between the pole ear 2002 and the cover plate 100, but its length is designed to ensure that it does not cover the area to be welded. Subsequently, the first pressing parts 163 of the first welding assembly 16 are partially pre-pressed on the pole lug 2002 around the welding head under the buffering effect of the spring floating device. These pressing parts are first in contact with the pole lug 2002 because they are higher than the welding head, and the periphery of the welding area is evenly flattened by elastic pressure. The first moving part 161 drives the first welding part 162 to be pressed vertically down to a preset position, and precise welding is performed in the welding area without external interference. From the overall fixation of the disk 2001, the flattening of the pole lug 2002 area to the local pre-pressing of the welding point, the precise operation of the welding head is finally achieved, effectively avoiding the risk of offset caused by multi-force coupling. At the same time, the spring floating design and the space avoidance structure jointly compensate for the assembly tolerance of the parts to ensure a stable and reliable welding process.

[0036] The air cooling station is provided with a heat dissipation fan (not shown in the figure), and the heat dissipation fan is arranged toward the first supporting plate 13 on the air cooling station to cool down the welded product 500.

[0037] like Figure 1As shown, the frame 11 is provided with a first conveying assembly 19, and the first conveying assembly 19 is close to the first good product unloading station and the first good product unloading station, that is, the first good product unloading station and the first good product unloading station share the first conveying assembly 19 to unload the product 500. The first conveying assembly 19 includes a first good product conveyor belt 191, a first unloading driving member 192 and a first good product conveyor belt 193, and the first unloading driving member 192 has three mutually perpendicular translational degrees of freedom, and the output end of the first unloading driving member 192 is a suction port to absorb the good product 500 and move it to the first good product conveyor belt 191, or absorb the defective product 500 and move it to the first good product conveyor belt 193.

[0038] like Figure 8 As shown, the present application also provides an automatic assembly welding production line, including the above-mentioned automatic welding mechanism, and also includes a coding device 2 and an electrical performance testing device 3. The coding device 2 is connected to the second feeding component 15. The coding device 2 codes the busbar 200 and transports the coded busbar 200 to the first welding device.

[0039] like Fig. 9 As shown, the coding equipment 2 includes a second workbench 21, which is rotatably connected to the frame 11. A plurality of second bearing plates 22 are provided on the outer peripheral side of the second workbench 21, and the plurality of second bearing plates 22 are evenly distributed on the edge of the first workbench 12. In this embodiment, six operating stations corresponding to the second bearing plates 22 are provided on the frame 11, including a third loading station, a pre-coding inspection station, a coding station, a post-coding inspection station, a second good product unloading station, and a second good product unloading station.

[0040] The frame 11 at the third loading station is fixed with a third loading assembly 23, and the third loading assembly 23 includes a loading tray 231 and a first robotic arm 232. The first robotic arm 232 is a five-axis robotic arm. The output end of the first robotic arm 232 has a suction port. The first robotic arm 232 suctionally transfers the workpiece to the second supporting plate 22 on the third loading station.

[0041] The pre-coding inspection station is fixed with a third visual inspection component 24, and the post-coding inspection station is fixed with a fourth visual inspection component 25. In this embodiment, the third visual inspection component 24 and the fourth visual inspection component 25 both use visual modules, and the visual modules are arranged toward the second carrier plate 22 of the corresponding station. The third visual inspection component 24 detects the positioning accuracy of the busbar 200, and the fourth visual inspection component 25 identifies the number of the corresponding busbar 200, so as to accurately control the subsequent automated production.

[0042] The frame 11 of the coding station is fixedly provided with a coding assembly 26, which includes a second moving member 261 that moves in the vertical direction, and a laser coder 262 and a smoothing member 263 are fixedly provided at the output end of the second moving member 261. The smoothing member 263 is configured as a hollow cylindrical structure, and the laser coder 262 is located inside the smoothing member 263. The smoothing member 263 presses the edge of the disk body 2001 to prevent the edge of the disk body 2001 from warping to ensure the flatness of the disk body 2001, and the laser coder 262 then codes the disk body 2001, that is, the busbar 200 is numbered.

[0043] The frame 11 is fixed with a second conveying assembly 27, which is close to the second good product unloading station and the second good product unloading station, that is, the second good product unloading station and the second good product unloading station share the second conveying assembly 27 to unload the product 500. The second conveying assembly 27 includes a second good product conveyor belt 271, a second unloading driving member 272 and a second good product conveyor belt 273. The second unloading driving member 272 has three mutually perpendicular translational degrees of freedom. The output end of the second unloading driving member 272 is a suction port to absorb the good product 500 and move it to the second good product conveyor belt 271, and the second unloading driving member 272 absorbs the defective product 500 and moves it to the second good product conveyor belt 273. The input end of the second good product conveyor belt 271 is located within the travel range of the second conveying assembly 27, and the output end of the second good product conveyor belt 271 is located within the travel range of the second loading assembly 15, so as to convey the coded confluence plate 200 to the first workbench 12 and weld it with the cover plate 100.

[0044] like Fig.10 As shown, the electrical performance testing equipment 3 includes a third workbench 31, a transport assembly 32, a resistance detection assembly 33 and an insulation detection assembly 34. The third workbench 31 is rotatably connected to the frame 11. The third workbench 31 is fixed with a plurality of third bearing plates 35. The plurality of third bearing plates 35 are evenly fixed on the edge of the third workbench 31 for carrying the product 500. The transport assembly 32, the insulation detection assembly 34 and the resistance detection assembly 33 are sequentially distributed around the outer circumference of the third workbench 31. The transport assembly 32 is used to transfer the welded assembly of the cover plate 100 and the busbar 200 to the third bearing plate 35. The welded assembly of the cover plate 100 and the busbar 200 is the product 500. The product 500 passes through the insulation detection assembly 34 and the resistance detection assembly 33 in sequence to detect the product 500, and finally the product 500 that has completed the detection is transferred to the next process. In this embodiment, the insulation detection component 34 is an insulation resistance tester, and in other embodiments, a withstand voltage tester can be used; in this embodiment, the resistance detection component 33 is a microohmmeter, and in other embodiments, the resistance detection component 33 can use an automated resistance tester or an online resistance tester. Example 2

[0045] like Fig.11 As shown, the difference between this embodiment and embodiment 1 is that an automatic assembly welding production line also includes an explosion-proof plate assembly welding device 4, and the explosion-proof plate assembly welding device 4 is arranged before the welding process of the cover plate 100 and the busbar 200, and the explosion-proof plate assembly welding device 4 welds the explosion-proof plate 300 to the cover plate 100.

[0046] The explosion-proof disk assembly welding equipment 4 includes a fourth workbench 41, which is rotatably connected to the frame 11, and a plurality of fourth bearing plates 42 are fixedly arranged on the fourth workbench 41, and the plurality of fourth bearing plates 42 are evenly distributed on the edge of the fourth workbench 41, and are used to carry the cover plate 100. In this embodiment, eight operating stations are arranged on the frame 11, which include a fourth loading station, a fifth loading station, a second pre-welding inspection station, a second welding station, a second post-welding inspection station, a third good product unloading station, and a third good product unloading station.

[0047] Specifically, a second tray loading assembly is provided at the fourth loading station, which is used to transfer the cover plate 100 to the fourth supporting plate 42 of the fourth loading station. A fourth loading assembly 43 is provided at the fifth loading station, and the fourth loading assembly 43 includes a flexible vibration disk 431 and a third movable member 432. The flexible vibration disk 431 is provided with a discharge platform. The operator pours the explosion-proof disc 300 into the flexible vibration disk 431, and the flexible vibration disk 431 transports the explosion-proof disc 300 to the discharge platform one by one. The third movable member 432 is a mechanical arm with five degrees of freedom. The output end of the third movable member 432 is an adsorption port. The third movable member 432 transports the explosion-proof disc 300 located at the discharge port one by one to the cover plate 100 located at the fifth loading station, so that the explosion-proof disc 300 can fit on the corresponding hole of the cover plate 100.

[0048] The second pre-weld inspection station is fixed with a fifth visual inspection assembly 44, and the second post-weld inspection station is fixed with a sixth visual inspection assembly 45. Both the fifth visual inspection assembly 44 and the sixth visual inspection assembly 45 use visual modules, and the visual modules are arranged toward the fourth carrier plate 42 of the corresponding station. The fifth visual inspection assembly 44 is used to detect whether the explosion-proof disk 300 is facing the hole of the cover plate 100, and the sixth visual inspection assembly 45 is used to detect whether the weld between the explosion-proof disk 300 and the cover plate 100 is qualified.

[0049] The second welding assembly 46 is fixedly provided, and the second welding assembly 46 moves in the vertical direction to weld the explosion-proof disk 300 and the cover plate 100 together. The specific structure is similar to that of the first welding assembly 16, and will not be described in detail here.

[0050] The frame 11 is provided with a third conveying assembly 47 for sorting the cover plates 100 that have completed welding and testing, transporting good products to the next process at the third good product unloading station, and collecting defective products at the third good product unloading station. The structure of the third conveying assembly 47 is similar to that of the second conveying assembly 27, and will not be repeated here. Example 3

[0051] like Fig.12 and Fig.13 As shown, the difference between this embodiment and embodiment 1 is that an automatic assembly welding production line further includes a film pasting device 5, which is arranged after the welding process of the cover plate 100 and the busbar 200, and the film pasting device 5 includes a film supply flyer 51 and a film pick-up and placement assembly 52. ​​The film supply flyer 51 is rotatably connected to the frame 11, and the film pick-up and placement assembly 52 includes a bearing platform 521 and a film pasting member 522. The top of the bearing platform 521 is concave to form a channel, and the bottom surface of the channel is a plane. A pair of pressing plates 523 are arranged in the channel, and the pressing plates 523 are fixed to the side walls of the channel along the length direction of the channel. A gap is left between the pressing plates 523 and the bottom of the channel for the roll film of the carrying film 400 to pass through. The film 400 is a sheet structure with adhesiveness, which is attached to the surface of the roll film, while the surface of the roll film is not adhesive.

[0052] A fourth conveying assembly 53 is provided on the frame 11. The difference between the fourth conveying assembly 53 and the first conveying assembly 19 is that the fourth conveying assembly 53 also includes a guide rail 531 and a supporting block 532. The supporting block 532 supports the welded product 500, and the supporting block 532 slides along the length direction of the guide rail 531.

[0053] The film sticking member 522 has three degrees of translational freedom, and the end of the film sticking member 522 is a suction port. The film sticking member 522 removes the film 400 from the roll film and sticks it on the product 500. Since there is a certain probability that the film 400 is not attached to the product 500, a film cleaning platform 54 is fixed on the frame 11 of the carrying platform 521. When it is detected that the film 400 on the suction port of the film sticking member 522 is not attached to the surface of the product 500, the film sticking member 522 will move to the top of the film cleaning platform and stick the film 400 on the suction port to the film cleaning platform. Since the stickiness of the film 400 that has been stuck once decreases and is easily stained with dust, the film 400 is discarded on the film cleaning platform, and a new film 400 is taken and attached to the product 500.

[0054] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. An automatic welding mechanism, characterized in that: include: Rack(11); A first workbench (12) is rotatably connected to the frame (11); a plurality of first bearing plates (13) are fixedly arranged on the edge of the first workbench (12); and the first bearing plates (13) are arranged in an array and distributed on the edge of the first workbench (12); A first loading assembly (14) is fixedly mounted on the frame (11), wherein the first loading assembly (14) has multiple degrees of freedom and is used to transport the cover plate (100) onto the first carrying plate (13); A second loading assembly (15) is fixedly mounted on the frame (11); the second loading assembly (15) has multiple degrees of freedom; the first carrier plate (13) sequentially transports the busbar (200) to the cover plate (100) of the first carrier plate (13) through the first loading assembly (14) and the second loading assembly (15) for assembly; The first welding assembly (16) comprises a first welding member (162) and a plurality of first pressing members (163); the first welding member (162) is slidably connected to the frame (11) along a vertical direction; an output end of the first welding member (162) is perpendicular to a rotation path of the first bearing plate (13); a plurality of first pressing members (163) surround the output end of the first welding member (162) and are slidably connected to the frame (11) and are used to press against the busbar (200) and the cover plate (100); the first welding member (162) welds the busbar (200) and the cover plate (100) located on the first bearing plate (13).

2. An automatic welding mechanism according to claim 1, characterized in that: The first bearing plate (13) is provided with a busbar positioning pin (131), a cover plate positioning pin (132) and a limiting groove (133) arranged radially along the first workbench (12); the busbar positioning pin (131) and the cover plate positioning pin (132) are respectively located at two ends of the limiting groove (133); the busbar positioning pin (131) is used to constrain the plate body (2001) of the busbar (200); the cover plate positioning pin (132) is used to constrain the cover plate (100); and the side wall of the limiting groove (133) is used to constrain the pole ear (2002) of the busbar (200); The frame (11) is provided with a locking assembly (17), the locking assembly (17) being arranged in a vertical direction toward a first carrier plate (13) close to or away from a bottom of a first welding assembly (16), the output end of the locking assembly (17) being configured to surround the busbar positioning pin (131), and the locking assembly (17) presses the cover plate (100) onto the first carrier plate (13).

3. An automatic welding mechanism according to claim 2, characterized in that: The frame (11) is slidably connected to a supporting member (164) in a vertical direction. The supporting member (164) is provided with a through hole (165) penetrating in the vertical direction. A plurality of welding pressure claws (166) are fixedly provided in the supporting member (164). The plurality of welding pressure claws (166) extend toward the central axis of the through hole (165). The first pressing member (163) is slidably connected in the through hole (165). The first pressing member (163) partially slides out of the bottom surface of the supporting member (164) to the bottom of the limiting member. The supporting member (164) and the welding pressure claws (166) together form an area for welding the first welding member (162).

4. An automatic assembly welding production line, characterized in that: An automatic welding mechanism (1) comprising any one of claims 1 to 3, further comprising a coding device (2) and an electrical performance testing device (3) for coding a busbar (200) to be subjected to a welding process, wherein an output position of the coding device (2) is connected to a loading position of the second loading assembly (15), the frame (11) is provided with a first good product conveyor belt (191), and an input end of the electrical performance testing device (3) is connected to an output end of the first good product conveyor belt (191).

5. The automatic assembly welding production line according to claim 4 is characterized in that: The coding device (2) comprises a second workbench (21) rotatably connected to the frame (11); a plurality of second bearing plates (22) arranged in a circumferential array are fixedly provided at the edge of the second workbench (21); a second moving member (261) moving in a vertical direction is fixedly provided on the frame (11) on the peripheral side of the second workbench (21); a laser coding device (262) and a smoothing member (263) are fixedly provided at the output end of the second moving member (261); the smoothing member (263) is configured as a hollow cylindrical structure and is used for pressing the edge of the disk body (2001); the laser coding device (262) is located inside the smoothing member (263) and is used for coding the disk body (2001).

6. The automatic assembly welding production line according to claim 4, characterized in that: The electrical performance testing device (3) comprises a third workbench (31), the third workbench (31) being rotatably connected to the frame (11), a plurality of third bearing plates (35) for bearing the product (500) being fixedly arranged on the outer edge of the third workbench (31), a transport assembly (32), an insulation detection assembly (34) and a resistance detection assembly (33) being arranged on the outer peripheral side of the third workbench (31), the transport assembly (32) being used to transport the product (500) to the third bearing plate (35), and the third workbench (31) being rotatably passed through the insulation detection assembly (34) and the resistance detection assembly (33) in sequence.

7. The automatic assembly welding production line according to claim 4, characterized in that: The input end of the automatic welding mechanism (1) is provided with a bursting disk assembly welding device (4), the bursting disk assembly welding device (4) comprising a fourth workbench (41) for carrying a combination of a cover plate (100) and a bursting disk (300), the fourth workbench (41) being rotatably connected to a frame (11), the frame (11) being fixedly provided with a second welding assembly (46) for welding the cover plate (100) and the bursting disk (300).

8. The automatic assembly welding production line according to claim 7, characterized in that: The frame (11) at the output end of the automatic welding mechanism (1) is fixedly provided with a fourth conveying assembly (53), a film supply feeder (51) and a film pick-up and placement assembly (52); the fourth conveying assembly (53) is used to transport the welded product (500); the film supply feeder (51) is rotatably connected to the frame (11); and the film pick-up and placement assembly (52) has multiple degrees of freedom to fit the film (400) on the film supply feeder (51) onto the product (500).

9. The automatic assembly welding production line according to claim 8, characterized in that: The film placement assembly (52) comprises a carrying platform (521) and a film sticking member (522) both fixedly mounted on the frame (11); the top of the carrying platform (521) is concavely formed into a channel for the film roll to pass through; a pair of pressing plates (523) are fixedly mounted in the channel; the pressing plates (523) are fixedly mounted on the side walls of the channel along the length direction of the channel; a gap is provided between the pressing plates (523) and the bottom of the channel for the film roll to pass through; the film sticking member (522) having three degrees of freedom moves between the carrying platform (521) and the fourth conveying assembly (53) to remove the film sticking (400) adhered to the film roll and stick it on the product (500).

10. The automatic assembly welding production line according to claim 9, characterized in that: The frame (11) is fixedly provided with a film cleaning platform (54), and the film cleaning platform (54) is within the travel range of the film sticking member (522). When the film (400) at the end of the film sticking member (522) is not adhered to the product (500), the film sticking member (522) moves to the film cleaning platform (54) to adhere the film sticking member (522) to the film cleaning platform (54).

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