Welding machine and motor machining apparatus

Abstract

The application belongs to the field of motor processing equipment, and particularly relates to a welding machine and motor processing equipment. The welding machine comprises a laser structure, a bearing structure and a positioning material feeding structure. The laser structure comprises a laser located at a welding station and a support seat for supporting the laser. The bearing structure comprises a flatly arranged material bearing plate and a translation driving assembly for driving the material bearing plate to move to the welding station. The positioning material feeding structure comprises an adjusting seat arranged on the material bearing plate, a positioning mold rotatably connected to the adjusting seat and detachably connected to a busbar, a material winding assembly connected to the material bearing plate and wound with a conductive sheet, and a rotary driver for driving the positioning mold to rotate. The rotary driver drives the positioning mold to rotate by a predetermined angle, so that a first terminal is in a state to be welded. The material winding assembly feeds the conductive sheet to the first terminal. The translation assembly drives the material bearing plate to move to the welding station, so that the laser welds the conductive sheet and the first terminal through a laser beam. The application can improve welding quality and welding precision.

Description

Technical Field

[0001] This invention belongs to the field of motor processing equipment, and particularly relates to welding machines and motor processing equipment. Background Technology

[0002] In new energy vehicle power batteries, energy storage systems, and high-voltage electrical equipment, busbars, as core conductive components, typically require the welding of conductive sheets (silver-tin sheets) to their terminals to enable parallel connection of multiple tabs or external electrical connections. This welding process demands extremely high positional accuracy and welding consistency, directly affecting the battery pack's internal resistance, heat generation, and safety performance.

[0003] In traditional equipment, the positioning mold is driven by rotation and translation. This means the positioning mold needs to load the busbar, then rotate the busbar by a certain angle, and finally translate it to the laser's location. There are also conductive sheet loading and translation drives, where the conductive sheet is fed to the busbar terminals via a servo drive, and then translated to the laser's location by another servo drive. Because these movements are driven by independent servo motors, and the transmission components are connected by couplings, lead screws, or synchronous belts, the transmission chains are too long and dispersed, easily leading to the accumulation of errors.

[0004] During prolonged use, the actual position of the busbar and conductive sheet may deviate from the theoretical position required by the laser. This can cause the laser beam to have difficulty irradiating the effective range of the conductive sheet. In other words, the position where the laser beam irradiates the conductive sheet may be off-center from the theoretical position, which can easily lead to defects such as incomplete soldering, off-center soldering, or insufficient weld strength, thus reducing the welding accuracy and quality. Summary of the Invention

[0005] The purpose of this application is to provide a welding machine that addresses the problem of improving the welding quality of conductive sheets and busbars.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: In a first aspect, a welding machine is provided for welding conductive sheets to a first terminal on a busbar, the welding machine comprising: A laser structure includes a laser located at a welding station and a support for supporting the laser; The supporting structure includes a flatly laid carrier plate and a translation drive assembly for moving the carrier plate to the welding station; and The positioning and feeding structure includes an adjustment seat disposed on the carrier plate, a positioning mold rotatably connected to the adjustment seat and detachably connected to the busbar, a roll assembly connected to the carrier plate and wound with a conductive sheet, and a rotary driver for driving the positioning mold to rotate. The rotary driver drives the positioning mold to rotate by a predetermined angle so that the first terminal is in a state to be welded. The coil assembly feeds the conductive sheet to the first terminal. The translation assembly drives the carrier plate to move to the welding station so that the laser can weld the conductive sheet and the first terminal through the laser beam.

[0007] In some embodiments, the translation drive assembly includes a first adapter, a first lead screw rotatably connected to the first adapter, a first slider threadedly connected to the first lead screw and slidably arranged along a first direction, and a first driver for driving the first lead screw to rotate, wherein the first slider is connected to the material carrier plate; the translation assembly further includes a second slider connected to the first adapter and slidably arranged along a second direction, a fixedly disposed second adapter, a second lead screw rotatably connected to the second adapter and threadedly connected to the second slider, and a second driver for driving the second lead screw to rotate, wherein the first direction is perpendicular to the second direction.

[0008] In some embodiments, the roll assembly includes a mounting base connected to the carrier plate, a collimating wheel assembly rotatably disposed on the mounting base, a pressure wheel assembly disposed opposite to the collimating wheel assembly, and a wire nozzle engaging with the pressure wheel assembly, wherein the conductive sheet passes sequentially through the collimating wheel assembly, the pressure wheel assembly, and the wire nozzle.

[0009] In some embodiments, the pressure roller assembly includes an upper pressure roller rotatably connected to the mounting base, a lower pressure roller cooperating with the upper pressure roller and rotatably connected to the mounting base, and a pressure drive for driving the lower pressure roller, wherein the conductive sheet is located between the upper pressure roller and the lower pressure roller.

[0010] In some embodiments, the roll assembly further includes a sliding mechanism for driving the mounting base to move along the second direction. The sliding mechanism includes a third adapter connected to the carrier plate, a third lead screw rotatably connected to the third adapter, and a third slide plate threadedly connected to the third lead screw. The mounting base is connected to the third slide plate.

[0011] In some embodiments, the positioning mold has a positioning ring groove and a limiting groove communicating with the positioning ring groove. The positioning ring groove is arranged circumferentially along the positioning mold, and the limiting groove is arranged radially along the positioning mold. The busbar is located in the positioning ring groove, and a limiting member is provided in the limiting groove. The telescopic end of the limiting member abuts against the busbar. Two limiting members are arranged, and the two limiting members are respectively located at both ends of the limiting groove.

[0012] In some embodiments, the welding machine further includes a pressing structure, which includes a bracket connected to the material carrier plate, a lifting driver connected to the bracket, a telescopic driver connected to the lifting driver, and a pressure pin with one end connected to the telescopic driver. The other end of the pressure pin has an avoidance hole and is used to press the conductive sheet downward.

[0013] In some embodiments, the press-fit structure further includes a cutting assembly, which includes a cutter, a mounting plate connected to the cutter, and a cutter driver for driving the mounting plate to slide along the first direction. The cutter is slidable to the position of the positioning mold to cut the conductive sheet.

[0014] In some embodiments, two press-fitting structures are arranged, the positioning mold is located between the two press-fitting structures, and a second terminal is also provided on the busbar. The two press-fitting structures are respectively provided corresponding to the first terminal and the second terminal.

[0015] In a second aspect, an electric motor processing device is provided, which includes the welding machine.

[0016] The beneficial effects of this application are as follows: by integrating the adjusting seat and the coil assembly onto the same carrier plate, the rotation drive of the positioning mold and the feeding action of the conductive sheet can both be based on the carrier plate. Then, through the overall translation of the carrier plate, the conductive sheet and the busbar can be moved synchronously to the welding station, reducing the accumulation of transmission errors and ensuring that during long-term use, the first terminal and the conductive sheet are located at the actual positions required by the welding station. This allows the laser beam to irradiate the welding position of the conductive sheet, such as the center of the conductive sheet, thereby enabling the conductive sheet to be effectively welded to the first terminal, improving welding accuracy and welding quality. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or exemplary technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the welding machine provided in the embodiments of this application; Figure 2 yes Figure 1 A magnified view of part A of the welding machine; Figure 3 yes Figure 1 A top view of the welding machine; Figure 4 yes Figure 1A three-dimensional structural diagram of the translation drive component of the welding machine; Figure 5 yes Figure 1 A three-dimensional structural diagram of the coil assembly with a positioning and feeding structure; Figure 6 yes Figure 1 A three-dimensional structural diagram of the positioning mold for the positioning and feeding structure; Figure 7 yes Figure 1 A three-dimensional structural diagram of the press-fit structure.

[0019] The following are the labeling elements in the figure: 100. Welding machine; 101. Busbar; 102. Conductive sheet; 10. Laser structure; 11. Laser; 12. Support base; 107. CCD detection structure; 40. Pressing structure; 44. Cutting assembly; 441. Cutting blade; 442. Cutting driver; 443. Mounting plate; 111. Laser beam; 20. Positioning and feeding structure; 21. Rotary driver; 22. Adjusting seat; 23. Positioning mold; 30. Coil assembly; 31. Material wheel; 32. Collimating wheel group; 33. Pressure wheel group; 34. Wire nozzle; 35. Mounting base; 36. Sliding mechanism; 361. Third slider; 362. Third lead screw; 363. Third adapter; 364. Third driver; 50. Bearing structure; 51. Carrier plate; 5 2. Translation drive assembly; 110. First terminal; 120. Second terminal; 104. Limiting part; 231. Positioning ring groove; 232. Limiting groove; 233. Limiting notch; 25. Limiting component; 41. Pressure pin; 411. Clearance hole; 521. First adapter; 522. First slider; 523. First lead screw; 524. First driver; 526. Second adapter; 528. Second slider; 527. Second lead screw; 525. Second driver; 322. First collimating wheel; 321. Second collimating wheel; 331. Lower pressure wheel; 332. Upper pressure wheel; 333. Material pressing driver; 334. Adjusting screw; 335. Adjusting slider; 45. Bracket; 423. Lifting driver; 43. Telescopic driver. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the scope of this application.

[0021] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly or indirectly attached to that other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are for ease of description only, not to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality" means two or more, unless otherwise explicitly defined.

[0022] Please see Figures 1 to 7 This application provides a welding machine 100 and an electric motor processing device having the same. The welding machine 100 is capable of welding a conductive sheet 102 to a first terminal 110 on a busbar 101. The busbar 101 is annular, and the conductive sheet 102 can be a silver-tin sheet. By feeding the silver-tin sheet to the first terminal 110 and then passing it through a laser beam 111, the connection between the silver-tin sheet and the first terminal 110 can be achieved.

[0023] The first terminal 110 has a first welding surface. During the welding process, a conductive sheet 102 is placed with the first welding surface facing upwards. The conductive sheet 102 is made of a metallic material, such as silver, tin, or a mixture of silver and tin. The conductive sheet 102 is in sheet form and is arranged in a roll upon arrival.

[0024] Please see Figures 1 to 3 The welding machine 100 includes: a laser structure 10, a load-bearing structure 50, and a positioning and feeding structure 20.

[0025] The laser structure 10 includes a laser 11 located at the welding station and a support 12 for supporting the laser 11. It is understood that the support 12 is fixedly located at the welding station, and the laser 11 is capable of generating a high-energy laser beam 111. The propagation direction of the laser beam 111 can be from top to bottom and along the vertical direction.

[0026] Please see Figures 1 to 3 The supporting structure 50 includes a flatly arranged carrier plate 51 and a translation drive assembly 52 for driving the carrier plate 51 to move to the welding station. The carrier plate 51 is horizontally arranged and can move horizontally under the drive of the translation drive assembly 52, moving the welding station to the welding range of the laser 11 for welding operations.

[0027] Please see Figures 1 to 3 The positioning and feeding structure 20 includes an adjustment seat 22 disposed on the carrier plate 51, a positioning mold 23 rotatably connected to the adjustment seat 22 and detachably connected to the busbar 101, a winding assembly 30 connected to the carrier plate 51 and wound with conductive sheet 102, and a rotary driver 21 for driving the positioning mold 23 to rotate. The end face of the positioning mold 23 is arranged along a vertical plane, the busbar 101 is detachably connected to the end face of the positioning mold 23, the rotary driver 21 drives the positioning mold 23 to rotate at a certain angle so that the first welding surface is horizontally upward, and the winding assembly 30 then releases the conductive sheet 102 to the first welding surface so that the conductive sheet 102 is stacked on the first welding surface.

[0028] Please see Figures 1 to 3 The rotary driver 21 drives the positioning mold 23 to rotate by a predetermined angle so that the first terminal 110 is in a state to be welded. The predetermined angle is such that the first welding surface is horizontal and facing upward so that the first welding surface can receive the irradiation of the laser beam 111. The coil assembly 30 feeds the conductive sheet 102 onto the first terminal 110, and the translation assembly drives the carrier plate 51 to move to the welding station so that the laser 11 welds the conductive sheet 102 and the first terminal 110 through the laser beam 111.

[0029] Please see Figures 1 to 3 The welding machine 100 provided in this application integrates the adjusting seat 22 and the coil assembly 30 onto the same carrier plate 51. This allows the rotation drive of the positioning mold 23 and the feeding action of the conductive sheet 102 to be based on the carrier plate 51. By translating the carrier plate 51 as a whole, the conductive sheet 102 and the busbar 101 can be moved synchronously to the welding station, reducing the accumulation of transmission errors. This ensures that during long-term use, the first terminal 110 and the conductive sheet 102 are located at the actual positions required by the welding station, so that the laser beam 111 can irradiate the welding position of the conductive sheet 102, such as the center of the conductive sheet 102. This allows the conductive sheet 102 to be effectively welded to the first terminal 110, improving welding accuracy and welding quality.

[0030] Please see Figures 4 to 6 In some embodiments, the translation drive assembly 52 includes a first adapter 521, a first lead screw 523 rotatably connected to the first adapter 521, a first slider 522 threadedly connected to the first lead screw 523 and slidably arranged along a first direction, and a first driver 524 for driving the first lead screw 523 to rotate, wherein the first slider 522 is connected to the carrier plate 51.

[0031] Please see Figures 4 to 6The translation assembly further includes a second slider 528 connected to the first adapter 521 and slidably arranged along the second direction, a fixedly disposed second adapter 526, a second lead screw 527 rotatably connected to the second adapter 526 and threadedly connected to the second slider 528, and a second driver 525 for driving the second lead screw 527 to rotate. The first direction is perpendicular to the second direction.

[0032] Please see Figures 4 to 6 Optionally, the first direction is horizontal and can be represented as X. The two ends of the first lead screw 523 can be rotatably connected to the two ends of the first adapter 521 through two bearings respectively. The first driver 524 can be a servo motor and is used to drive the first lead screw 523 to rotate. The outer surface of the first lead screw 523 is provided with external threads, and the first slider 522 is provided with threaded holes. The first slider 522 is threadedly connected to the first lead screw 523 through the threaded holes, thereby converting the rotational motion of the first lead screw 523 into the linear motion of the first slider 522.

[0033] Please see Figures 4 to 6 The second direction is horizontal and can be represented as Y. The two ends of the second lead screw 527 can be rotatably connected to the two ends of the second adapter 526 through two bearings respectively. The second driver 525 can be a servo motor and is used to drive the rotation of the second lead screw 527. The outer surface of the second lead screw 527 is provided with external threads, and the second slider 528 is provided with threaded holes. The second slider 528 is threadedly connected to the second lead screw 527 through the threaded holes, thereby converting the rotational motion of the second lead screw 527 into the linear motion of the second slider 528.

[0034] It is understandable that by orthogonally arranging the first lead screw 523 and the second lead screw 527, the first slider 522 and the second slider 528 can slide along the first direction and the second direction respectively, thereby realizing the movement of the material carrier plate 51 along the first direction or the second direction, and thus driving the adjustment seat 22 and the coil assembly 30 to move as a whole. This avoids the accumulation of errors in the multi-stage transmission chain in the split drive, and ensures that the first terminal 110 on the positioning mold 23 and the conductive sheet 102 on the coil assembly 30 are synchronously translated to the welding station, thereby improving the welding accuracy of the conductive sheet 102 and the first terminal 110.

[0035] Please see Figures 4 to 6 In some embodiments, the roll assembly 30 includes a mounting base 35 connected to the carrier plate 51, a collimating roller group 32 rotatably disposed on the mounting base 35, a pressure roller group 33 disposed opposite to the collimating roller group 32, and a wire nozzle 34 engaging with the pressure roller group 33. The conductive sheet 102 passes through the collimating roller group 32, the pressure roller group 33 and the wire nozzle 34 in sequence.

[0036] Optionally, the conductive sheet 102 is wound around the feed roller 31 of the connecting mounting base 35. One end of the conductive sheet 102 passes through the collimating roller group 32 and the pressure roller group 33 and is located at the wire nozzle 34. The collimating roller group 32 can collimate the conductive sheet 102 so that the length direction of the conductive sheet 102 is straight. The collimating roller group 32 includes a plurality of first collimating rollers 322 arranged in a straight line and a plurality of second collimating rollers 321 arranged in a straight line. The first collimating rollers 322 are located above the second collimating rollers 321, and the conductive sheet 102 is located between the first collimating rollers 322 and the second collimating rollers 321. The conductive sheet 102 is kept in a straight state by the mutual compression of the first collimating rollers 322 and the second collimating rollers 321.

[0037] Both the first collimating roller 322 and the second collimating roller 321 are rotatably connected to the mounting base 35. The conductive sheet 102 passes through the collimating roller group 32 and enters the pressure roller group 33. The pressure roller group 33 provides power for the conveying of the conductive sheet 102, enabling it to move towards the first welding surface. Finally, it is fed onto the first welding surface by the wire nozzle 34. The continuous cooperation between the collimating roller group 32 and the pressure roller group 33 achieves stable tension and precise path control of the conductive sheet 102 during the feeding process, improving welding accuracy and weld quality.

[0038] In some embodiments, the pressure roller assembly 33 includes an upper pressure roller 332 rotatably connected to the mounting base 35, a lower pressure roller 331 cooperating with the upper pressure roller 332 and rotatably connected to the mounting base 35, and a pressure driver 333 for driving the lower pressure roller 331, wherein the conductive sheet 102 is located between the upper pressure roller 332 and the lower pressure roller 331.

[0039] Please see Figures 4 to 6 Optionally, the upper pressure roller 332 and the lower pressure roller 331 are connected by gears. The upper pressure roller 332 has a gear on its rotating shaft, and the lower pressure roller 331 also has a gear on its rotating shaft. The pressure drive 333 can be a servo motor. The pressure roller drive drives the lower pressure roller 331 to rotate. Through gear engagement, the lower pressure roller 331 drives the upper pressure roller 332 to rotate synchronously. The lower pressure roller 331 and the upper pressure roller 332 cooperate to clamp the conductive sheet 102, realizing the dynamic adjustment and uniform pressing of the tension of the conductive sheet 102. This allows the conductive sheet 102 to be controlled and squeezed between the two rollers and move smoothly toward the wire nozzle 34, while maintaining a straight state during the movement.

[0040] Please see Figures 4 to 6Optionally, the mounting base 35 has a guide groove arranged in a vertical direction. The coil assembly 30 includes an adjusting slider 335 slidably disposed in the guide groove and an adjusting screw 334 connected at one end to the adjusting slider 335. The other end of the adjusting screw 334 is threaded to the mounting base 35, and the upper pressure roller 332 is rotatably connected to the adjusting slider 335. By rotating the adjusting screw 334, the height of the adjusting slider 335 can be changed, thereby adjusting the gap between the upper pressure roller 332 and the lower pressure roller 331 to adapt to conductive sheets 102 of different thicknesses and the clamping force applied to the conductive sheet 102, thereby improving the versatility of the welding machine 100.

[0041] Please see Figures 1 to 3 In some embodiments, the roll assembly 30 further includes a sliding mechanism 36 for driving the mounting base 35 to move along the second direction. The sliding mechanism 36 includes a third adapter 363 connected to the carrier plate 51, a third lead screw 362 rotatably connected to the third adapter 363, and a third slide plate threadedly connected to the third lead screw 362. The mounting base 35 is connected to the third slide plate.

[0042] Please see Figures 1 to 3 Optionally, the two ends of the third lead screw 362 can be rotatably connected to the two ends of the third adapter 363 through two bearings respectively. The third driver 364 can be a servo motor and is used to drive the third lead screw 362 to rotate. The outer surface of the third lead screw 362 is provided with external threads, and the third slider 361 is provided with threaded holes. The third slider 361 is threadedly connected to the third lead screw 362 through the threaded holes, so that the rotational motion of the third lead screw 362 can be converted into the linear motion of the third slider 361.

[0043] The sliding mechanism 36 drives the mounting base 35 to slide along the first direction, thereby enabling the feeding of conductive sheets 102 at multiple positions of the busbar 101, which improves the convenience of feeding.

[0044] Please see Figure 2 and Figure 5 In some embodiments, the positioning mold 23 has a positioning ring groove 231 and a limiting groove 232 communicating with the positioning ring groove 231. The positioning ring groove 231 is arranged circumferentially along the positioning mold 23, and the limiting groove 232 is arranged radially along the positioning mold 23. The busbar 101 is located in the positioning ring groove 231. A limiting member 25 is provided in the limiting groove 232. The telescopic end of the limiting member 25 abuts against the busbar 101. Two limiting members 25 are arranged, and the two limiting members 25 are respectively located at both ends of the limiting groove 232.

[0045] Please see Figure 2 and Figure 5Optionally, the limiting member 25 is a spring ball plunger. The ball head of the spring ball plunger abuts against the inner annular surface of the manifold 101. Since both the manifold 101 and the ball head of the spring ball plunger are arc surfaces, there is point-to-point contact between them, which improves the positioning accuracy and reduces the force.

[0046] Please see Figure 2 and Figure 5 Two limiting grooves 232 are arranged, intersecting and orthogonally. Four limiting members 25 respectively abut against four positions of the busbar 101, thereby making the busbar 101 detachably fixed to the positioning ring groove 231. This improves the convenience of installing and disassembling the busbar 101, and also avoids radial offset or circumferential movement of the busbar 101 due to centrifugal force or vibration during rotation, ensuring the positional accuracy of the first terminal 110 at the welding station and reducing welding deviation.

[0047] Please see Figure 2 and Figure 5 Optionally, the rotary driver 21 can be a servo motor. The rotary driver 21 can realize the rotation of the positioning mold 23 through a gear assembly or a worm gear assembly. The positioning mold 23 can be rotatably connected to the adjusting seat 22 through a bearing.

[0048] Please see Figure 2 and Figure 5 Optionally, the groove wall of the positioning ring groove 231 is provided with a limiting notch 233, and the busbar 101 is provided with a limiting part 104 protruding into the limiting notch 233. The limiting part 104 abuts against the inner wall of the limiting notch 233, thereby preventing the busbar 101 from rotating around the central axis of the positioning mold 23.

[0049] Please see Figure 1 , Figure 3 and Figure 6 In some embodiments, the welding machine 100 further includes a pressing structure 40, which includes a bracket 45 connected to the carrier plate 51, a lifting driver 423 connected to the bracket 45, a telescopic driver 43 connected to the lifting driver 423, and a pressure pin 41 with one end connected to the telescopic driver 43. The other end of the pressure pin 41 has a clearance hole 411 for pressing the conductive sheet 102 downward. The clearance hole 411 is arranged vertically in the depth direction and is used to allow the laser beam 111 to pass through so that the laser beam 111 can heat the conductive sheet 102.

[0050] Please see Figure 1 , Figure 3 and Figure 6 Optionally, the lifting drive 423 and the telescopic drive 43 can both be cylinders or other mechanisms capable of outputting linear motion.

[0051] Please see Figure 1 , Figure 3 and Figure 6 When the first welding surface is horizontal and the conductive sheet 102 needs to be pressed, the telescopic actuator 43 drives the pressure pin 41 to move laterally horizontally toward the positioning mold 23 and position it above the conductive sheet 102. The lifting actuator 423 then drives the pressure pin 41 to descend and press the conductive sheet 102. When it is not necessary to press the conductive sheet 102, the telescopic actuator 43 drives the pressure pin 41 to move laterally in a direction away from the positioning mold 23 and releases the pressure on the conductive sheet 102.

[0052] Please see Figure 1 , Figure 3 and Figure 6 It is understandable that the conductive sheet 102 is pre-pressed by the pressure needle 41, and the pressure needle 41 and the wire nozzle 34 work together to keep the conductive sheet 102 between the wire nozzle 34 and the pressure needle 41 in a taut state. This allows the conductive sheet 102 to maintain full and tight contact with the first welding surface, so that the laser beam 111 can weld the conductive sheet 102 to the first welding surface. This avoids weak welding or incomplete welding caused by the floating of the conductive sheet 102, improves the strength and consistency of the weld, and improves the welding quality.

[0053] Please see Figure 1 , Figure 3 and Figure 6 In some embodiments, the press-fit structure 40 further includes a cutting assembly 44, which includes a cutter 441, a mounting plate 443 connected to the cutter 441, and a cutter driver for driving the mounting plate 443 to slide along the first direction. The cutter 441 can slide to the position of the positioning mold 23 to cut the conductive sheet 102.

[0054] Optionally, the cutter 441 can be a blade or scissors. In this embodiment, the cutter 441 is scissors. By operating the two handles of the scissors, the conductive sheet 102 is cut off, so that part of the conductive sheet 102 is retained and soldered to the first terminal 110.

[0055] Please see Figure 1 , Figure 3 and Figure 6 The cutter driver can be a cylinder or other mechanism that can output linear motion. After welding is completed, the cutter driver drives the mounting plate 443 to slide along the first direction, so that the cutter 441 moves to the conductive sheet 102. For example, by setting a finger cylinder on the mounting plate 443, the two fingers of the finger cylinder are respectively connected to the two handles of the scissors, thereby driving the scissors to cut the conductive sheet 102, and the cutter driver then drives the scissors to retract.

[0056] Please see Figure 1 , Figure 3and Figure 6 In some embodiments, two press-fit structures 40 are arranged, the positioning mold 23 is located between the two press-fit structures 40, and the busbar 101 is also provided with a second terminal 120. The two press-fit structures 40 are respectively provided with the first terminal 110 and the second terminal 120.

[0057] Optionally, the second terminal 120 is provided with a second welding surface, and the conductive sheet 102 is welded to the second welding surface. Along the rotation direction of the positioning mold 23, the first welding surface and the second welding surface are oriented in opposite directions. Two second terminals 120 are arranged at intervals, so that the busbar 101 can be connected to a three-phase power supply.

[0058] Please see Figure 1 , Figure 3 and Figure 6 It is understandable that by rotating the positioning mold 23, the first welding surface or the second welding surface can be placed in a horizontal position and facing upwards. Then, the sliding mechanism 36 can be used to feed the conductive sheet 102 onto the first welding surface or the second welding surface by the coil assembly 30.

[0059] The present invention also proposes an electric motor processing device, which includes a welding machine 100. The specific structure of the welding machine 100 is as described in the above embodiments. Since the electric motor processing device adopts all the technical solutions of all the above embodiments, it also has all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0060] Please see Figures 1 to 3 In some embodiments, the motor processing equipment also includes a CCD detection structure 107 and a frame. The CCD detection structure 107 can detect the busbar 101 with the conductive sheet 102 welded on it to ensure that the welding quality meets the requirements.

[0061] The laser structure 10, the load-bearing structure 50, the CCD detection structure 107, and the positioning and feeding structure 20 are all connected to the frame.

[0062] The above are merely optional embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A welding machine for welding conductive sheets to a first terminal on a busbar, characterized in that, The welding machine includes: A laser structure includes a laser located at a welding station and a support for supporting the laser; The supporting structure includes a flatly laid carrier plate and a translation drive assembly for moving the carrier plate to the welding station; and The positioning and feeding structure includes an adjustment seat disposed on the carrier plate, a positioning mold rotatably connected to the adjustment seat and detachably connected to the busbar, a roll assembly connected to the carrier plate and wound with a conductive sheet, and a rotary driver for driving the positioning mold to rotate. The rotary driver drives the positioning mold to rotate by a predetermined angle so that the first terminal is in a state to be welded. The coil assembly feeds the conductive sheet to the first terminal. The translation assembly drives the carrier plate to move to the welding station so that the laser can weld the conductive sheet and the first terminal through the laser beam.

2. The welding machine as described in claim 1, characterized in that: The translation drive assembly includes a first adapter seat, a first lead screw rotatably connected to the first adapter seat, a first slider threadedly connected to the first lead screw and slidably arranged along a first direction, and a first driver for driving the first lead screw to rotate. The first slider is connected to the material carrier plate. The translation assembly also includes a second slider connected to the first adapter seat and slidably arranged along a second direction, a fixed second adapter seat, a second lead screw rotatably connected to the second adapter seat and threadedly connected to the second slider, and a second driver for driving the second lead screw to rotate. The first direction is perpendicular to the second direction.

3. The welding machine as described in claim 2, characterized in that: The coil assembly includes a mounting base connected to the carrier plate, a collimating wheel assembly rotatably mounted on the mounting base, a pressure wheel assembly disposed opposite to the collimating wheel assembly, and a wire nozzle docking with the pressure wheel assembly. The conductive sheet passes sequentially through the collimating wheel assembly, the pressure wheel assembly, and the wire nozzle.

4. The welding machine as described in claim 3, characterized in that: The pressure roller assembly includes an upper pressure roller rotatably connected to the mounting base, a lower pressure roller cooperating with the upper pressure roller and rotatably connected to the mounting base, and a pressure drive for driving the lower pressure roller, wherein the conductive sheet is located between the upper pressure roller and the lower pressure roller.

5. The welding machine as described in claim 3, characterized in that: The roll assembly further includes a sliding mechanism for driving the mounting base to move along the second direction. The sliding mechanism includes a third adapter connected to the carrier plate, a third lead screw rotatably connected to the third adapter, and a third slide plate threadedly connected to the third lead screw. The mounting base is connected to the third slide plate.

6. The welding machine as described in any one of claims 1-5, characterized in that: The positioning mold has a positioning ring groove and a limiting groove that connects to the positioning ring groove. The positioning ring groove is arranged circumferentially along the positioning mold, and the limiting groove is arranged radially along the positioning mold. The busbar is located in the positioning ring groove, and a limiting member is provided in the limiting groove. The telescopic end of the limiting member abuts against the busbar. Two limiting members are arranged, and the two limiting members are respectively located at both ends of the limiting groove.

7. The welding machine as described in any one of claims 1-5, characterized in that: The welding machine also includes a pressing structure, which includes a bracket connected to the material carrier plate, a lifting driver connected to the bracket, a telescopic driver connected to the lifting driver, and a pressure pin with one end connected to the telescopic driver. The other end of the pressure pin has an avoidance hole and is used to press the conductive sheet downward.

8. The welding machine as described in claim 7, characterized in that: The press-fit structure further includes a cutting assembly, which includes a cutter, a mounting plate connected to the cutter, and a cutter driver for driving the mounting plate to slide along the first direction. The cutter can slide to the position of the positioning mold to cut the conductive sheet.

9. The welding machine as described in claim 7, characterized in that: Two press-fitting structures are arranged, the positioning mold is located between the two press-fitting structures, and a second terminal is also provided on the busbar. The two press-fitting structures are respectively provided for the first terminal and the second terminal.

10. An electric motor processing equipment, characterized in that, Including the welding machine as described in any one of claims 1-9.

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