Lead laser welding machine for photovoltaic junction box

Abstract

The invention relates to the technical field of photovoltaic junction boxes, in particular to a photovoltaic junction box lead laser welding machine which comprises a rack, a conveying system is arranged on the rack and comprises a plurality of front-back parallel conveying belts, each conveying belt is defined to extend in the left-right direction, and the conveying belts are used for conveying photovoltaic panels and junction boxes; the upper side of the conveying system is provided with a lead correcting system used for fixing a lead to a junction box base. A laser welding system is arranged at the upper end of the lead restoration system and comprises a vertical plate, a plurality of mounting plates are mounted on the front side of the vertical plate in a left-right sliding manner, a positioning seat is mounted on the front side of each mounting plate in an up-down sliding manner, and a laser transmitter is arranged on each positioning seat; a visual positioning system is arranged on the front side of the laser welding system and comprises a plurality of mounting seats, and positioning cameras are arranged on the mounting seats; the welding efficiency can be remarkably improved by welding the copper lead and the junction box base through laser, and the welding precision can be improved through the arrangement of the lead restoration system and the visual positioning system.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic junction boxes, and in particular to a photovoltaic junction box lead laser welding machine. Background Art

[0002] The photovoltaic junction box is a connection device between the solar cell array composed of solar cell modules and the solar charging control device. The photovoltaic junction box is used to connect the photovoltaic module and the load, draw out the current generated by the module and generate power, and act as a bridge connecting the solar module and control devices such as inverters. The current generated by the solar module can be drawn out and introduced into the electrical equipment through the wiring terminals and connectors inside the junction box. The junction box includes a connector for connecting the busbar. The welding quality of the busbar and the connector has an important impact on the performance and reliability of the photovoltaic system.

[0003] Traditional photovoltaic panel junction box lead welding mainly uses hot pressure welding or electromagnetic welding. Hot pressure welding mainly presses the tin-coated copper wire against the welding surface, heats the tin wire or the tin block on the copper lead with an electric soldering iron or a heating block, and melts the tin to wrap the copper wire and the conductive connection surface to complete the welding; electromagnetic welding heats the tin block and copper lead on the junction box through electromagnetic induction. The melting point of the tin block is lower than that of the copper lead. The tin block will reach the melting point first and then form a liquid to fuse the junction box base metal and the copper lead together, and then blow air to accelerate the cooling and solidification to complete the welding.

[0004] However, when hot pressing is used for welding the leads, the leads and the junction box need to be in contact, which may cause damage to the leads and the junction box. At the same time, more tin may stick to the heating head during welding, thereby affecting the subsequent welding quality of the junction box and the leads.

[0005] When electromagnetic welding is used for welding, the electromagnetic welding joint often has a shorter lifespan, which undoubtedly increases the production cost. In addition, due to the different melting points of the tin block and the copper lead, the welding parameters need to be precisely controlled to ensure that the tin block melts first and forms a good connection with the copper lead. However, in actual operation, the control of welding parameters is often affected by many factors, such as equipment accuracy, ambient temperature, etc., resulting in unstable welding quality. In addition, electromagnetic welding requires a certain amount of time to complete the melting and solidification of the tin block, which limits the improvement of production efficiency and may lead to an increase in production costs and time costs. Summary of the invention

[0006] The invention provides a photovoltaic junction box lead laser welding machine to solve the technical problem that the photovoltaic junction box and the lead are welded by hot pressing welding and induction welding, resulting in unstable welding quality.

[0007] In order to solve the above problems, the present invention provides a photovoltaic junction box lead laser welding machine adopts the following technical solutions: A photovoltaic junction box lead laser welding machine comprises a frame, a conveying system is arranged on the frame, the conveying system comprises a plurality of front and rear parallel conveying belts, each conveying belt is defined to extend in a left-right direction, and the conveying belts are used to convey photovoltaic panels and junction boxes; A lead wire correction system is provided on the upper side of the conveying system, which includes a horizontal plate extending left and right on the frame, a plurality of Y-axis displacement components are provided on the lower side of the horizontal plate, an X-axis displacement component is provided at the lower end of each Y-axis displacement component, a Z-axis displacement component is provided on the rear side of each X-axis displacement component, a rotating motor is provided on the Z-axis displacement component, a connecting plate is provided at the lower end of the rotating motor, a correction component is provided at the rear end of the connecting plate, the correction component includes a downward pressure cylinder, a downward pressure plate is provided at the lower end of the downward pressure cylinder, a smoothing cylinder is provided at the lower end of the downward pressure cylinder, and two smoothing plates are provided on the rear side of the smoothing cylinder to smooth the lead wire to the left and right sides; The upper end of the lead correction system is provided with a laser welding system, which includes a vertical plate, a plurality of mounting plates are slidably mounted on the front side of the vertical plate, a positioning seat is slidably mounted on the front side of each mounting plate, and each positioning seat is provided with a laser emitter; A visual positioning system is provided on the front side of the laser welding system, which includes a plurality of mounting seats slidably mounted on a frame, and a positioning camera is provided on the mounting seats.

[0008] Its beneficial effects are: by setting up a laser welding system, the equipment can complete the mutual fusion welding of the copper lead and the junction box base through laser in a short time, avoiding the occurrence of unstable welding quality caused by the traditional welding method of using tin block melting welding; in addition, the setting of the lead correction system and the visual positioning system can improve the welding accuracy of the lead and the junction box base, significantly improving the welding efficiency while ensuring the welding quality.

[0009] Furthermore, the Y-axis moving assembly includes two Y-axis slide rails located at the lower end of the horizontal plate, and multiple Y-axis slide plates are slidably installed on the two Y-axis slide rails. A Y-axis lead screw is provided at the lower end of the horizontal plate corresponding to each Y-axis slide plate, and a Y-axis motor is provided at one end of the Y-axis lead screw. Each Y-axis lead screw is provided with a nut fixedly connected to the corresponding Y-axis slide plate, so that the Y-axis slide plate can be driven to move left and right by the Y-axis motor.

[0010] Furthermore, the X-axis moving assembly includes two X-axis slide rails located at the lower end of each Y-axis slide plate, an X-axis slide seat is slidably mounted on the two X-axis slide rails, an X-axis lead screw is provided at the lower end of each Y-axis slide plate, an X-axis motor is provided at the front end of the X-axis lead screw, and each X-axis lead screw is provided with a nut fixedly connected to the corresponding X-axis slide seat, so that the X-axis slide seat can be driven to move forward and backward by the X-axis motor.

[0011] Furthermore, the Z-axis moving assembly includes two Z-axis rails located at the rear end of each X-axis slide, and the Z-axis slide is slidably installed on the two Z-axis rails. A Z-axis screw is provided at the front end of each Z-axis slide. The Z-axis screw is fixed on the X-axis slide, and a pulley is provided at the upper end thereof. A Z-axis motor is provided on the front side of the Z-axis screw to drive the Z-axis screw to rotate through belt transmission, and each Z-axis screw is provided with a nut fixedly connected to the corresponding Z-axis slide to drive the Z-axis slide to move up and down.

[0012] Further, the rotating motor is fixed on the Z-axis slide, the correction assembly includes a rear top plate located at the rear end of the connecting plate, a height sensor is provided on the front side of the rear top plate, two slide rails extending up and down are provided on the rear side of the rear top plate, a support plate extending up and down is slidably mounted on the two slide rails, a connecting block is provided at the upper end of the rear top plate, two spring connectors are provided on the rear side of the connecting block, and the lower end of the spring connector is fixedly connected to the support plate; Support rods are provided at the rear end of the rear top plate and on the left and right sides of the support plate. Two positioning rods extending up and down are provided at the lower end of each support rod. A horizontally extending positioning plate is provided at the lower end of the positioning rod. Positioning holes are provided on the positioning plate corresponding to the junction box.

[0013] The beneficial effects are as follows: the setting of the height sensor enables the laser transmitter to adjust its own height according to the real-time height of the junction box, thereby ensuring the welding quality of the lead and the junction box by ensuring optimal focusing; the setting of the spring connector can prevent the lower pressure plate from damaging the junction box and the lead during the pressing process.

[0014] Furthermore, three slide rails extending left and right are arranged in parallel on the rear side of the support plate, wherein two slide rails located on the upper side are slidably mounted with two bearing blocks extending up and down, and clamping blocks are fixedly arranged on the left and right sides of the support plate, and positioning screws are arranged in the two clamping blocks, which are respectively screwed to the two bearing blocks on the left and right sides, so as to adjust the spacing between the two bearing blocks; The front sides of the two supporting blocks are each provided with a slide rail three extending up and down, and a lower pressure block is slidably installed on the two slide rails three. The lower pressure plates are respectively fixed at the lower ends of the two lower pressure blocks, and the lower pressure cylinder is fixed at the upper ends of the two supporting blocks. A push rod extending up and down is provided in the lower pressure cylinder, and the lower end of each push rod is fixedly connected to the lower pressure block to drive the two lower pressure plates to press the junction box.

[0015] Furthermore, the smoothing cylinder is fixed to the front side of the support plate, and the smoothing cylinder is a double-axis cylinder. Two fixed plates extending backward are provided at the lower end of the smoothing cylinder, and connecting blocks are provided on the two fixed plates. The two connecting blocks are slidably mounted on the slide rail 2 at the lower end of the rear side of the support plate; the two smoothing plates are respectively located at the rear ends of the two fixed plates so as to move in opposite and reverse directions under the drive of the smoothing cylinder; the two fixed plates are also provided with anti-collision screws extending left and right to prevent the two smoothing plates from colliding; a vacuum cleaner is provided on the rear side of the lower pressure block to eliminate the smoke generated by welding.

[0016] Furthermore, two slide rails four extending left and right are provided in parallel on the front side of the vertical plate, and each mounting plate is slidably installed on the two slide rails four. A lead screw one extending left and right is provided on the front side of the vertical plate corresponding to each mounting plate, and a motor one is provided at one end of the lead screw one. Each lead screw one is provided with a nut fixedly connected to the corresponding mounting plate to drive the mounting plate to move left and right.

[0017] Furthermore, two slide rails five extending up and down are provided on the front side of each of the mounting plates, and the positioning seat is slidably installed on the two slide rails five up and down. A lead screw two is provided on the front side of the mounting plate corresponding to each of the positioning seats, and a motor two is provided at the upper end of the lead screw two. A nut is sleeved on each of the lead screws two, and each nut is fixedly connected to the corresponding positioning seat to drive the positioning seat to move up and down; a welding detection device for detecting welding quality is provided on the positioning seat.

[0018] Furthermore, the visual positioning system includes two left and right extending guide rails located on the frame, each of the mounting seats is slidably mounted on the two guide rails, and a lighting panel is provided on the lower side of each mounting seat.

[0019] The beneficial effects of the photovoltaic junction box lead laser welding machine provided by the present invention are: 1. By setting up a laser welding system, the equipment can complete the mutual fusion welding of the copper lead and the junction box base through laser in a short time, avoiding the occurrence of unstable welding quality caused by the traditional welding method of using tin block melting welding; in addition, the setting of the lead correction system and the visual positioning system can improve the welding accuracy of the lead and the junction box base, significantly improving the welding efficiency while ensuring the welding quality.

[0020] 2. The setting of the height sensor enables the laser transmitter to adjust its own height according to the real-time height of the junction box, thereby ensuring the welding quality of the lead and the junction box by ensuring the best focus; the setting of the spring connector can prevent the lower pressure plate from damaging the junction box and the lead during the pressing process.

[0021] 3. The setting of the positioning screw enables the device to adjust the spacing of the lower pressure plate according to the size of different junction boxes, thereby improving the applicability of the device.

[0022] 4. Anti-collision screws can prevent the two smoothing plates from colliding, thus improving the stability of equipment operation; the setting of the vacuum cleaner can absorb the smoke and dust generated during laser welding, thus reducing the pollution to the working environment.

[0023] 5. The welding detection device can detect different defects generated during laser welding in real time, ensuring the welding quality of the lead wire and the junction box base, and helping to improve the yield rate of junction box production. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein: Figure 1 A schematic diagram of the structure of a photovoltaic junction box lead laser welding machine provided by the present invention; Figure 2 for Figure 1 The structural schematic diagram of the lead correction system shown; Figure 3 It is a structural diagram of the Y-axis moving component; Figure 4 It is a structural diagram of the X-axis moving component; Figure 5 It is a structural diagram of the Z-axis moving component; Figure 6 It is a schematic diagram of the structure of the correction component; Figure 7 This is a schematic diagram of the internal structure of the correction component; Figure 8 This is a schematic diagram of the initial state of the correction component; Fig. 9 It is a schematic diagram of the action state of the correction component; Fig.10 is a rear view of the corrected assembly; Fig.11 for Figure 1 The structural schematic diagram of the visual positioning system shown; Fig.12 for Figure 1 Schematic diagram of the structure of the laser welding system shown.

[0025] Description of reference numerals: 1. Frame; 2. Conveyor system; 21. Conveyor belt; 3. Lead wire correction system; 31. Horizontal plate; 32. Y-axis moving assembly; 321. Y-axis slide rail; 322. Y-axis slide plate; 324. Y-axis lead screw; 326. Y-axis motor; 327. Maintenance slide rail; 328. Maintenance cylinder; 33. X-axis moving assembly; 331. X-axis slide rail; 332. X-axis slide seat; 333. X-axis lead screw; 334. X-axis motor; 34. Z-axis moving assembly; 341. Z-axis slide rail; 342. Z-axis slide seat; 343. Z-axis lead screw; 344. Pulley; 345. Z-axis motor; 346. Rotating motor; 347. Connecting plate; 35. Realignment assembly; 351. Rear top plate; 3511. Slide rail one; 352. Support plate; 3521. Slide rail two; 353. Connecting block; 354. Spring connector; 355. Support rod; 356. Positioning rod; 357. Positioning plate; 358. Positioning hole; 359. Bearing block; 3591. Slide rail three; 360. Block; 361. Positioning screw; 362. Pressing block; 363. Pressing plate; 364. Pressing cylinder; 365. Push rod; 366. Smoothing cylinder; 367. Fixing plate; 368. Guide block; 369. Smoothing plate; 370. Anti-collision screw; 371. Bracket; 372. Vacuum cleaner; 373. Air hole; 374. Height sensor; 4. Laser welding system; 41. Vertical plate; 411. Slide rail 4; 412. Lead screw 1; 413. Motor 1; 42. Mounting plate; 421. Slide rail 5; 422. Lead screw 2; 423. Motor 2; 43. Positioning seat; 44. Laser transmitter; 45. Welding detection device; 5. Visual positioning system; 51. Mounting seat; 52. Positioning camera; 53. Lighting board; 54. Guide rail. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0027] The main idea of ​​the present invention is to set up a laser welding system 4 so that the equipment can complete the mutual fusion welding of the copper lead and the junction box base in a short time through laser, avoiding the occurrence of unstable welding quality caused by the traditional welding method of using tin block melting welding; in addition, the setting of the lead correction system 3 and the visual positioning system 5 can improve the welding accuracy of the lead and the junction box base, and significantly improve the welding efficiency while ensuring the welding quality.

[0028] After introducing the basic principle of the present invention, various non-limiting embodiments of the present invention are described in detail below. The number of any element in the drawings is for illustration and not for limitation, and any naming is only for distinction and does not have any limiting meaning.

[0029] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0030] Embodiment 1 of a photovoltaic junction box lead laser welding machine provided by the present invention: like Figures 1 to 12 As shown, the laser welding machine includes a frame 1, on which is provided a conveying system 2 for conveying photovoltaic panels and junction boxes, the conveying system 2 includes four parallel conveyor belts 21, and the conveyor belts 21 are defined to extend in left-right directions, a lead correction system 3 is provided at the upper end of the conveying system 2, the lead correction system 3 is used to correct the lead to a determined position at the junction box base, a laser welding system 4 for welding the lead and the junction box is provided at the upper end of the lead correction system 3, a visual positioning system 5 is provided on the front side of the laser welding system 4, and the visual positioning system 5 is used to locate the position of the welding point.

[0031] The following first introduces the lead correction system 3, which includes a transverse plate 31, which extends horizontally in the left and right directions. The left and right ends of the transverse plate 31 are provided with maintenance slide rails 327 extending forward and backward, and the maintenance slide rails 327 are fixed on the frame 1. The transverse plate 31 is slidably installed on the maintenance slide rails 327. The left and right ends of the upper side of the transverse plate 31 are provided with maintenance cylinders 328 extending forward and backward, and the front end of the maintenance cylinder 328 is fixed on the frame 1, and the rear end thereof is fixedly connected to the transverse plate 31, so as to move the lead correction system 3 to one side of the equipment when the equipment is maintained.

[0032] A Y-axis moving assembly 32 is provided at the lower end of the horizontal plate 31, and the Y-axis moving assembly 32 includes two Y-axis slide rails 321 extending left and right fixed on the lower end of the horizontal plate 31, the two Y-axis slide rails 321 are arranged in parallel, and three rectangular Y-axis slide plates 322 are slidably installed on the two Y-axis slide rails 321, wherein the two Y-axis slide rails 321 are respectively provided with sliders corresponding to each Y-axis slide plate 322, and each slider is fixedly connected to the corresponding Y-axis slide plate 322; a Y-axis lead screw 324 extending left and right is provided at the lower end of the horizontal plate 31 corresponding to each Y-axis slide plate 322, and each Y-axis lead screw 324 is respectively provided with a nut fixedly connected to the corresponding Y-axis slide plate 322, and a Y-axis motor 326 is provided at the left end of the two Y-axis lead screws 324 on the left and the right end of the Y-axis lead screw 324 on the right to drive each Y-axis slide plate 322 to move left and right respectively.

[0033] An X-axis moving assembly 33 is provided below the Y-axis moving assembly 32, and the X-axis moving assembly 33 includes two X-axis slide rails 331 extending forward and backward and located at the lower end of each Y-axis slide plate 322, and an X-axis slide seat 332 is slidably mounted on the two X-axis slide rails 331, wherein the upper side of each X-axis slide seat 332 is provided with a slider sleeved on the two X-axis slide rails 331; in addition, an X-axis lead screw 333 extending forward and backward is also provided at the lower end of each Y-axis slide plate 322, and a nut fixedly connected to the X-axis slide seat 332 is sleeved on the X-axis lead screw 333, and an X-axis motor 334 is provided at the front end of each X-axis lead screw 333 to drive the X-axis slide seat 332 to move forward and backward along the lead screw.

[0034] Then, a Z-axis moving assembly 34 is also provided at the lower end of the X-axis moving assembly 33, and the Z-axis moving assembly 34 includes two Z-axis slide rails 341 extending up and down and located at the rear side of each X-axis slide 332, and a Z-axis slide 342 is slidably mounted on the two Z-axis slide rails 341, wherein the front side of each Z-axis slide 342 is fixed with a slider sleeved on the two Z-axis slide rails 341; in addition, a Z-axis lead screw 343 extending up and down is provided on the front side of each X-axis slide 332, and a nut fixedly connected to the corresponding Z-axis slide 342 is sleeved on the Z-axis lead screw 343, and a pulley 344 is provided on the upper end of each Z-axis lead screw 343, and a Z-axis motor 345 is provided on the front side of the Z-axis lead screw 343, and a pulley 344 is also provided on the upper end of the Z-axis motor 345 to drive the Z-axis slide 342 to move up and down through belt transmission and lead screw transmission.

[0035] Then, a rotating motor 346 is provided on the Z-axis slide 342, and the output end of the rotating motor 346 is the lower end. The lower end of the rotating motor 346 is provided with a connecting plate 347 extending forward and backward, and the rear end of the connecting plate 347 is provided with a correction component 35 for tightening the lead wire to adjust the position of the correction component 35 and make it correspond to each junction box.

[0036] The correction component 35 includes a rear top plate 351 located at the rear end of the connecting plate 347, and two vertically extending slide rails 3511 are arranged in parallel on the rear side of the rear top plate 351, and vertically extending support plates 352 are slidably mounted on the two slide rails 3511, and a slider mounted on the two Z-axis slide rails 341 is fixedly arranged on the front side of the support plate 352; in addition, a horizontally arranged connecting block 353 is arranged at the upper end of the rear top plate 351, and two vertically extending spring connectors 354 are arranged at the rear end of the connecting block 353, and the lower end of the spring connector 354 is fixedly connected to the upper end of the support plate 352 to prevent the correction device from damaging the junction box and the lead.

[0037] The rear end of the rear top plate 351 and the left and right sides of the support plate 352 are provided with support rods 355 extending forward and backward, and the lower end of each support rod 355 is provided with two positioning rods 356 extending up and down. The lower end of the positioning rod 356 is provided with a positioning plate 357 extending left and right, and the positioning plate 357 is provided with a positioning hole 358 for passing the laser.

[0038] Then, three sliding rails 3521 extending left and right are provided on the rear side of the support plate 352, among which two supporting blocks 359 extending up and down are slidably installed on the two sliding rails 3521 located on the upper side, and a sliding block is provided between each supporting block 359 and the sliding rails 3521; the left and right sides of the support plate 352 are fixed with clamping blocks 360, and the two clamping blocks 360 are provided with positioning screws 361 which are respectively screwed to the two supporting blocks 359 on the left and right sides to adjust the distance between the two supporting blocks 359. The rear sides of the two supporting blocks 359 are each provided with a slide rail three 3591 extending up and down, and a rectangular down-pressing block 362 is each provided on the two slide rails three 3591 for sliding up and down. The lower ends of the two down-pressing blocks 362 are each provided with a down-extending down-plate 363, and the down-pressing plate 363 is used to fix the lead wire; the upper end of each down-pressing block 362 is provided with a down-pressing cylinder 364 fixed on the corresponding supporting block 359, and a push rod 365 extending up and down is provided in the down-pressing cylinder 364, and the push rod 365 is fixedly connected to the corresponding down-pressing block 362 to drive the down-pressing plate 363 to move up and down.

[0039] Then, the front side of the support plate 352 is provided with a smoothing cylinder 366 extending left and right. The smoothing cylinder 366 is a double-axis cylinder, and its lower end is provided with two fixed plates 367 extending forward. The upper ends of the two fixed plates 367 are provided with rectangular guide blocks 368, and the two guide blocks 368 are slidably installed on the slide rail 3521 at the lower end of the rear side of the support plate 352; the rear sides of the two fixed plates 367 are provided with smoothing plates 369, so that the two smoothing plates 369 can be driven by the smoothing cylinder 366 to move in opposite and reverse directions.

[0040] In addition, the two fixing plates 367 are provided with anti-collision screws 370 extending left and right to prevent the two smoothing plates 369 from colliding; the left and right sides of the lower end of the support plate 352 are provided with brackets 371 extending backward, and a vacuum cleaner 372 is provided on the bracket 371 and on the rear side of the lower pressing block 362 to eliminate smoke and dust generated during welding; the lower ends of the two lower pressing blocks 362 are provided with air holes 373 to cool the welding points after the welding of the leads and the junction box base is completed.

[0041] The laser welding system 4 is introduced below. The laser welding system 4 includes a vertical plate 41 fixed on the frame 1. The vertical plate 41 is a rectangular plate extending left and right and is perpendicular to the horizontal plate 31. Two left and right extending slide rails 411 are arranged in parallel on the front side of the vertical plate 41. Two mounting plates 42 are slidably installed on the front sides of the two slide rails 411. A slider sleeved on the two slide rails 411 is fixedly provided on the rear side of the mounting plate 42. Two left and right extending lead screws 412 are arranged on the front side of the vertical plate 41 corresponding to the two mounting plates 42. Nuts fixedly connected to the mounting plates 42 are sleeved on the two lead screws 412. Motors 413 are arranged at the left end of the left lead screw 412 and the right end of the right lead screw 412 to drive the mounting plates 42 to move left and right.

[0042] Then, two vertically extending slide rails 421 are provided in parallel on the front sides of the two mounting plates 42, and positioning seats 43 are slidably installed on the two slide rails 421, and a slider is provided between the positioning seat 43 and the two slide rails 421; the two mounting plates 42 are also provided with vertically extending lead screws 422, and the lead screws 422 are provided with nuts fixedly connected to the positioning seats 43, and the upper ends of the lead screws 422 are provided with motors 423 to drive the positioning seats 43 to move up and down; each positioning seat 43 is provided with a laser emitter 44 for welding the junction box base and leads.

[0043] In addition, each positioning seat 43 is also provided with a welding detection device 45 to detect the welding quality of the lead and the junction box base; each of the front sides of the rear top plates 351 is provided with a height sensor 374 to enable the laser emitter 44 to adjust its own height according to the real-time height of the junction box, thereby ensuring the welding quality of the lead and the junction box by ensuring optimal focusing.

[0044] Finally, the visual positioning system 5 is introduced, which includes two left and right extending guide rails 54 fixed on the frame 1, and three mounting seats 51 are slidably mounted on the guide rails 54. Each mounting seat 51 is provided with a positioning camera 52 extending up and down to locate the position of the junction box and analyze the welding quality; the lower end of each mounting seat 51 is also provided with a lighting panel 53 for providing a light source.

[0045] The working principle of the device is as follows: first, the photovoltaic panel is transported to the bottom of the lead alignment system 3 through the conveying system 2, and then the positioning camera 52 takes a picture to locate the position of the junction box, and the X-axis motor 334 and the Y-axis motor 326 of the lead alignment component 35 adjust the alignment component 35 according to the position of the junction box so that it corresponds to the junction box, and at the same time, the rotating motor 346 rotates the alignment component 35 to a determined angle according to the feedback of the junction box position so that the positioning hole 358 corresponds to the junction box, and then the Z-axis motor 345 controls the alignment component 35 to press down to fix the junction box. At this time, the two smoothing plates 369 are located between the two leads, and then the smoothing cylinder 366 drives the two smoothing plates 369 to move to the left and right sides respectively, and smoothes the leads to the junction box bases on the left and right sides, and then the downward pressing cylinder 364 controls the downward movement of the lower pressing plate 363 and presses the leads tightly on the junction box base.

[0046] At this time, the height sensor 374 feeds back the real-time height of the junction box to the laser welding system 4, and then the laser welding system 4 adjusts the height of the laser emitter 44 according to the height of the junction box to ensure optimal focusing; the laser emitter 44 then performs laser welding, and while welding, the welding detection device 45 detects different defects generated during the laser welding process in real time, and finally the visual positioning system 5 detects the appearance of the welding surface to determine the welding quality.

[0047] Embodiment 2 of a photovoltaic junction box lead laser welding machine provided by the present invention: The main difference between it and Example 1 is: In Example 1, the smoothing cylinder is a double-axis cylinder.

[0048] In this embodiment, the two smoothing plates are respectively moved in opposite directions and in opposite directions by two reverse cylinders.

[0049] Embodiment 3 of a photovoltaic junction box lead laser welding machine provided by the present invention: The main difference between it and Example 1 is: In Example 1, the laser emitter moves on the vertical plate through a lead screw drive.

[0050] In this embodiment, the laser transmitter moves on the vertical plate through gear transmission.

[0051] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "width", "horizontal", "top", "bottom", "inside", "outside" and the like, which indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the devices or elements involved must have the specific orientation, be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as limitations on the scheme of the present invention.

[0052] In addition, in the description of this specification, “plurality” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.

Claims

1. A photovoltaic junction box lead laser welding machine, comprising a frame, characterized in that: The frame is provided with a conveying system, which includes a plurality of front and rear parallel conveyor belts, each of which is defined to extend in the left and right directions, and is used to convey photovoltaic panels and junction boxes; A lead wire correction system is provided on the upper side of the conveying system, which includes a horizontal plate extending left and right on the frame, a plurality of Y-axis displacement components are provided on the lower side of the horizontal plate, an X-axis displacement component is provided at the lower end of each Y-axis displacement component, a Z-axis displacement component is provided on the rear side of each X-axis displacement component, a rotating motor is provided on the Z-axis displacement component, a connecting plate is provided at the lower end of the rotating motor, a correction component is provided at the rear end of the connecting plate, the correction component includes a downward pressure cylinder, a downward pressure plate is provided at the lower end of the downward pressure cylinder, a smoothing cylinder is provided at the lower end of the downward pressure cylinder, and two smoothing plates are provided on the rear side of the smoothing cylinder to smooth the lead wire to the left and right sides; The upper end of the lead correction system is provided with a laser welding system, which includes a vertical plate, a plurality of mounting plates are slidably mounted on the front side of the vertical plate, a positioning seat is slidably mounted on the front side of each mounting plate, and each positioning seat is provided with a laser emitter; A visual positioning system is provided on the front side of the laser welding system, which includes a plurality of mounting seats slidably mounted on a frame, and a positioning camera is provided on the mounting seats.

2. A photovoltaic junction box lead laser welding machine according to claim 1, characterized in that: The Y-axis moving assembly includes two Y-axis rails located at the lower end of the cross plate, and multiple Y-axis slides are slidably installed on the two Y-axis rails. A Y-axis lead screw is provided at the lower end of the cross plate corresponding to each Y-axis slide. A Y-axis motor is provided at one end of the Y-axis lead screw, and a nut fixedly connected to the corresponding Y-axis slide is sleeved on each Y-axis lead screw to drive the Y-axis slide to move left and right through the Y-axis motor.

3. A photovoltaic junction box lead laser welding machine according to claim 2, characterized in that: The X-axis moving assembly includes two X-axis rails located at the lower end of each Y-axis slide, an X-axis slide is slidably mounted on the two X-axis rails, an X-axis lead screw is provided at the lower end of each Y-axis slide, an X-axis motor is provided at the front end of the X-axis lead screw, and each X-axis lead screw is sleeved with a nut fixedly connected to the corresponding X-axis slide, so that the X-axis slide can be driven to move forward and backward by the X-axis motor.

4. A photovoltaic junction box lead laser welding machine according to claim 3, characterized in that: The Z-axis moving assembly includes two Z-axis rails located at the rear end of each X-axis slide, and the Z-axis slide is slidably installed on the two Z-axis rails. A Z-axis screw is provided at the front end of each Z-axis slide. The Z-axis screw is fixed on the X-axis slide, and a pulley is provided at the upper end. A Z-axis motor is provided on the front side of the Z-axis screw to drive the Z-axis screw to rotate through belt transmission, and each Z-axis screw is provided with a nut fixedly connected to the corresponding Z-axis slide to drive the Z-axis slide to move up and down.

5. A photovoltaic junction box lead laser welding machine according to claim 4, characterized in that: The rotating motor is fixed on the Z-axis slide, and the correction component includes a rear top plate located at the rear end of the connecting plate, a height sensor is provided on the front side of the rear top plate, two slide rails extending up and down are provided on the rear side of the rear top plate, and a support plate extending up and down is slidably installed on the two slide rails, a connecting block is provided at the upper end of the rear top plate, and two spring connectors are provided on the rear side of the connecting block, and the lower end of the spring connector is fixedly connected to the support plate; Support rods are provided at the rear end of the rear top plate and on the left and right sides of the support plate. Two positioning rods extending up and down are provided at the lower end of each support rod. A horizontally extending positioning plate is provided at the lower end of the positioning rod. Positioning holes are provided on the positioning plate corresponding to the junction box.

6. A photovoltaic junction box lead laser welding machine according to claim 5, characterized in that: The rear side of the support plate is provided with three slide rails 2 extending left and right in parallel, wherein two slide rails 2 located on the upper side are provided with two bearing blocks extending up and down for left and right sliding installation, and the left and right sides of the support plate are both fixed with clamping blocks, and the two clamping blocks are provided with positioning screws respectively screwed with the two bearing blocks on the left and right sides to adjust the spacing between the two bearing blocks; The front sides of the two supporting blocks are each provided with a slide rail three extending up and down, and lower pressure blocks are slidably installed on the two slide rails three. The lower pressure plates are respectively fixed at the lower ends of the two lower pressure blocks, and the lower pressure cylinder is fixed at the upper ends of the two supporting blocks. Push rods extending up and down are provided in the lower pressure cylinder, and the lower ends of the push rods are fixedly connected to the lower pressure blocks to drive the two lower pressure plates to press the junction box.

7. A photovoltaic junction box lead laser welding machine according to claim 6, characterized in that: The smoothing cylinder is fixed to the front side of the support plate. The smoothing cylinder is a double-axis cylinder. Two fixed plates extending backward are provided at the lower end of the smoothing cylinder. Both fixed plates are provided with connecting blocks. Both connecting blocks are slidably mounted on the slide rail 2 at the lower end of the rear side of the support plate; the two smoothing plates are respectively located at the rear ends of the two fixed plates so as to move in opposite and reverse directions under the drive of the smoothing cylinder; the two fixed plates are also provided with anti-collision screws extending left and right to prevent the two smoothing plates from colliding; a vacuum cleaner is provided on the rear side of the lower pressure block to eliminate smoke generated by welding.

8. A photovoltaic junction box lead laser welding machine according to claim 7, characterized in that: Two slide rails four extending left and right are arranged in parallel on the front side of the vertical plate, and each mounting plate is slidably installed on the two slide rails four. A lead screw one extending left and right is arranged corresponding to each mounting plate on the front side of the vertical plate, and a motor one is arranged at one end of the lead screw one. Each lead screw one is sleeved with a nut fixedly connected to the corresponding mounting plate to drive the mounting plate to move left and right.

9. A photovoltaic junction box lead laser welding machine according to claim 8, characterized in that: Two slide rails five extending up and down are provided on the front side of each of the mounting plates, and the positioning seat is slidably installed on the two slide rails five up and down. A lead screw two is provided on the front side of the mounting plate corresponding to each of the positioning seats, and a motor two is provided on the upper end of the lead screw two. A nut is sleeved on each of the lead screws two, and each nut is fixedly connected to the corresponding positioning seat to drive the positioning seat to move up and down; a welding detection device for detecting welding quality is provided on the positioning seat.

10. A photovoltaic junction box lead laser welding machine according to claim 8, characterized in that: The visual positioning system comprises two guide rails extending left and right on the frame, each of the mounting seats is slidably mounted on the two guide rails, and a lighting panel is provided on the lower side of each mounting seat.

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