Solar cell string welding device

Abstract

The present invention discloses a solar cell string welding device, which relates to the technical field of solar cell string production. The welding device includes an unwinding section, a cutting section, an assembly section, a welding section, a blanking section, and a loading section. The unwinding section unwinds the welding ribbon, the cutting section cuts the welding ribbon to a specified length, the loading section places a single cell in the assembly section and places a pressing net on the previous cell, and uses the pressing net to press the welding ribbon onto the cell. The assembly section includes a traction mechanism for clamping and pulling the welding ribbon, and the traction mechanism places the cut welding ribbon on the cell. The assembly section transfers the cell, welding ribbon, and pressing net to the welding section. During the transfer process, the cell, welding ribbon, and pressing net do not contact any other mechanism, thereby preventing the position of the welding ribbon on the cell from shifting, thereby improving welding accuracy and product yield. After the welding section completes welding, the blanking section transfers the welded cell.

Description

Technical Field

[0001] The invention relates to the technical field of solar cell string production, in particular to a solar cell string welding device. Background Art

[0002] With the rapid development of photovoltaic technology, the manufacturing process for high-efficiency solar cell modules places increasingly stringent demands on welding precision. In the string soldering process for crystalline silicon solar cells, precise welding of the solder ribbon (typically tinned copper ribbon) to the cell busbars is crucial for determining the module's electrical performance and mechanical reliability. However, the problem of ribbon positioning deviation in traditional soldering processes has become a key bottleneck restricting improvements in soldering quality.

[0003] In existing technology, the welding of solder ribbons to cell cells is typically performed using automated equipment. The main process involves cutting, positioning, and pre-placing the solder ribbon on the cell busbars, followed by welding to achieve electrical connection. However, in actual production, it has been found that the solder ribbon is susceptible to mechanical vibration and inertia during positioning and transfer, resulting in misalignment between the solder ribbon and the busbars. This, in turn, requires manual re-inspection and repair to correct precision defects, significantly increasing production costs and hindering the improvement of production line cycle times. Summary of the Invention

[0004] The object of the present invention is to provide a solar cell string welding device to solve the problems raised in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solution: comprising a frame, an unwinding portion, the unwinding portion being arranged at one end of the frame, the welding ribbon flowing out from the unwinding portion, and further comprising a soaking portion, a cutting portion, an assembly portion, a welding portion, a blanking portion, a reflow portion, and a loading portion installed in the frame;

[0006] The cutting section quantitatively cuts the solder strips soaked in the soaking section;

[0007] The welding department performs infrared welding on the welding ribbon and the battery cell;

[0008] The reflow section sends the pressing net pressed on the battery cell and solder ribbon back to the loading section;

[0009] The unloading part delivers the welded battery cells; the loading part places the battery cells and the pressing net on the assembly part, and the pressing net is placed on the previous battery cell with the welding ribbon;

[0010] The battery cells, welding ribbons and pressing nets are assembled and placed in the assembly department, and the assembly department lifts the battery cells, welding ribbons and pressing nets and sends them to the welding department.

[0011] The cutting part includes a guide plate with a slide groove on the end surface for limiting the shaking of the welding strip; the assembly part includes a front tail clamping mechanism, a transfer mechanism and a traction mechanism; the front tail clamping mechanism includes a housing and a sliding block slidably installed in the housing, the housing is composed of a front tail motor seat, a guide rail fixing plate and two reinforcing plates connecting the front tail motor seat and the guide rail fixing plate, a guide rail for sliding the sliding block is installed on the guide rail fixing plate, a square groove is provided on the sliding block, a lifting cam is rotatably installed in the square groove, a front tail motor eccentrically connected to the lifting cam is provided outside the housing, a front support plate with an auxiliary groove is installed above the sliding block, and a front tail clamp driven by a front clamping cylinder is provided on the sliding block;

[0012] The transfer mechanism includes two plate supports mounted on the frame, a feed fixing plate mounted between the two plate supports, and a lifting structure for driving the feed fixing plate to rise and fall. The two plate supports are connected by a guide plate mounted on the upper portion, and a plurality of through slots are provided on the guide plate. The feed fixing plate is provided with a sheet net connecting plate and a sheet feeding seat respectively driven by a screw motor, and both the sheet net connecting plate and the sheet feeding seat can pass through the through slots.

[0013] The traction mechanism includes a clamping claw frame installed on the vertical clamping module, the vertical clamping module is installed on the frame, a vertical clamping slider seat is slidably installed on the clamping claw frame, the vertical clamping slider seat is moved up and down by a lifting cylinder, a clamping box is installed on the vertical clamping slider seat, and several clamping claw cylinders are installed on one side of the clamping box.

[0014] The front clamping cylinder is installed on the sliding block, and the output end of the front clamping cylinder is connected to a connecting plate slidably installed on the sliding block. The front supporting plate is located above the connecting plate. The front tail clamp is a clamp structure and the rotating shaft is installed below the front supporting plate. Several top blocks for controlling the opening and closing of the front tail clamps are provided on the connecting plate, and the top block is located on one side of the front tail clamp.

[0015] Slide rails are installed on both sides and the middle of the feed fixed plate, and the sheet net connecting plate and the sheet feeding seat are slidably installed on the slide rails. The screw motor connecting the sheet net connecting plate includes a transfer screw rotatably installed on one side of the feed fixed plate and a transfer motor installed on one side of the feed fixed plate through the transfer motor seat. An output synchronous wheel is installed on the output shaft of the transfer motor, and one end of the transfer screw is installed with a driven synchronous wheel connected to the synchronous belt. The transfer screw is connected to the sheet net connecting plate through a nut seat. The sheet net connecting plate consists of a "C"-shaped carrier plate connected to the nut seat and several sheet net support plates installed on the carrier plate and two feeding bars. The feed bar is located on the outside of the several sheet net support plates. The screw motor connecting the sheet feeding seat includes a transport screw installed on the feed fixed plate through a bearing seat and a transport motor driving the transport screw. The transport screw is connected to the sheet feeding seat through the nut seat; the sheet feeding seat consists of a transport fixed seat connected to the nut seat and two sheet feeding forks.

[0016] The jacking structure includes a lower inclined seat slidably mounted on the frame, two slide rails obliquely mounted on the lower inclined seat and a guide shaft connected to the feed fixed plate. A slider seat connected to the feed fixed plate is slidably mounted on the slide rail, and the lower inclined seat is driven by a screw motor to perform linear motion.

[0017] The soaking part includes a soaking box installed on the frame, a heating box installed at the bottom of the soaking box, two guide wheels rotatably installed inside the soaking box, and a pressure roller rotatably installed in the middle of the soaking box. A guide plate with a slope is installed on one side of a guide wheel inside the soaking box.

[0018] The cutting part also includes a base mounted on the frame, on which a feeding mechanism for pushing the solder strip and a cutting mechanism for cutting the solder strip are mounted;

[0019] The feeding mechanism includes a slide plate slidably mounted on a base, a push cylinder for driving the slide plate to perform linear motion is mounted on the base, a bottom plate is mounted on the slide plate through a pad, a cylinder mounting plate is mounted on the bottom plate through a flip seat on both sides, a pressing cylinder is mounted on the cylinder mounting plate, a pressing plate is mounted on the output end of the pressing cylinder, and a plurality of pressure rods for applying pressure to the welding strip are mounted on the pressing plate;

[0020] The cutting mechanism includes a guide rail fixing seat installed on the base and a slider fixing seat slidably installed on the guide rail fixing seat. A cutting cylinder is connected below the slider fixing seat, and the cutting cylinder is installed on the frame. Cutters that cooperate with each other to cut the welding strip are installed on the upper end of the guide rail fixing seat and the lower side of the upper end of the slider fixing seat.

[0021] The welding part includes a welding platform on one side of the transfer mechanism and an infrared welding machine located above the welding platform; a welding bracket is slidably installed on one side of the infrared welding machine, one end of the welding bracket is installed on the frame, and a welding cylinder for driving the infrared welding machine to move up and down is installed on the welding bracket; the welding platform includes a support frame, and the support frame is installed with a rear tail clamp structure on the side close to the transfer mechanism. The support frame is installed with a plurality of magnets and two support bars with gaps between them through a welding plate, one end of the support bar is installed on the support frame, and a supporting structure is installed on the lower inner side of the support frame, and the supporting structure includes a translation plate located below the support bar, and a translation plate on the translation plate Three discharging plates are installed, and the three discharging plates are separated by two supporting bars. One end of the discharging plate is located in the gap of the magnet. A plurality of guide rods are connected under the translation plate, and a slider connecting plate is slidably connected under the guide rods. The slider connecting plate is slidably installed on the frame, and a discharging motor and a screw connected to the discharging motor shaft are installed on the frame through a bearing support. The slider connecting plate is threadedly connected to the screw, and an "L"-shaped bearing seat is installed on the slider connecting plate. A jacking motor is installed on one side of the bearing seat, and a translation cam is eccentrically installed on the output end of the jacking motor. A cam sliding block is sleeved on the outer side of the translation cam, and one end of the cam sliding block is connected to the translation plate.

[0022] The rear tail clamp structure includes a rear tail motor seat mounted on the frame, a tail clamp connecting plate is slidably mounted on the rear tail motor seat, a rear tail motor eccentrically connected to the rear tail cam is mounted on one side of the rear tail motor seat, the rear tail cam is located in the cam groove on the tail clamp connecting plate, a tail clamp fixing plate and a tail clamp cylinder are mounted on the tail clamp connecting plate, and two rear tail fixing seats and a rear tail movable block are slidably mounted on the tail clamp fixing plate, and a "C"-shaped clamping plate is connected above the two rear tail fixing seats. A rear tail clamp for clamping the welding strip is formed above the "C"-shaped clamping plate, and the rear tail movable block is located between the two rear tail fixing seats, and the rear tail movable block extends upward to form a tail clamping plate, and a sub-clamping plate that cooperates with the rear tail clamp to clamp the welding strip is formed above the tail clamping plate. Bearings are provided on the sides where the rear tail movable block and a rear tail fixing seat are close to each other, and a clamping wedge block is provided at the output end of the tail clamp cylinder, and the inclined surfaces on both sides of the clamping wedge block are respectively in contact with the two bearings.

[0023] A detection portion is provided on one side of the welding portion of the frame, and two guide rods are provided on one side of the support frame; the detection portion includes a string cutting slide slidably mounted on the frame and a screw rod seat mounted on the frame, a string cutting screw rod is rotatably mounted on the screw rod seat, the string cutting screw rod is threadedly connected to the string cutting slide, one end of the string cutting screw rod is connected to the string cutting motor, the guide rod passes through the string cutting slide, a string cutting cylinder and a cutter fixing seat are mounted on the string cutting slide, a cylinder slide is slidably mounted on the cutter fixing seat, the output end of the string cutting cylinder is connected to the lower end of the cylinder slide, and cutters are respectively mounted above the cutter fixing seat and above and below the cylinder slide;

[0024] The detection unit also includes a profile, a flat belt, and a lifting cylinder installed on the frame. The flat belt is located on one side of the stringing slide. An "L"-shaped rotating seat is slidably installed on the profile. A crossbeam is rotatably installed between the two rotating seats. A flip cylinder that drives the crossbeam to flip is installed on one side of one of the rotating seats. Several suction cup fixing plates with suction cups are installed under the crossbeam. The output end of the lifting cylinder is connected to the rotating seat.

[0025] The unloading part is located on one side of the detection part. The unloading part includes an unloading pallet and two unloading cross braces installed on the frame. The two unloading cross braces are located above the unloading pallet and the flat belt. A cross beam connecting plate is slidably installed on the unloading cross brace. Both ends of the cross beam connecting plate are connected to the lower beam through side sliding rods. A unloading cylinder connected to the lower beam is installed below the middle of the cross beam connecting plate. A feeding motor and a driven pulley are respectively installed at both ends of the two unloading cross braces on the frame. A driving pulley is installed at the output end of the feeding motor. The driving pulley and the driven pulley are connected by a synchronous belt. The cross beam connecting plate is connected to one side of the synchronous belt. Extraction bearing seats are installed below both ends of the lower beam, and a flip beam is rotatably installed between the two extraction bearing seats. A number of suction cup fixing plates with suction cups are installed below the flip beam, and a unloading flip cylinder that drives the flip beam to rotate is installed on one side of an extraction bearing seat.

[0026] The reflux section includes a screen pressing frame mounted on a frame, an upper plate and a push-pull cylinder driving the upper plate to perform linear motion are slidably mounted on the screen pressing frame, a screen taking cylinder is mounted on the upper plate, a lower plate is mounted on the output end of the screen taking cylinder, and a plurality of electromagnets are mounted on the lower plate. One end of the screen pressing frame is located above the support frame;

[0027] The loading part includes a bracket installed on the frame, a reflow synchronous belt, a sheet material mechanism and a sheet placement table. The bracket is installed with a loading module. The loading module is installed with a double-material mechanism and a single-piece mechanism. One end of the reflow synchronous belt is located below the press frame, the sheet placement table is located on the inner side of the reflow synchronous belt, and the sheet material mechanism is located on one side of the reflow synchronous belt; the double-material mechanism picks up the press from the reflow synchronous belt and picks up the battery cells from the sheet placement table, and places the battery cells and the press on the assembly part under the drive of the loading module; under the drive of the loading module, the single-piece mechanism picks up the battery cells from the sheet material mechanism and places them on the sheet placement table.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows: before placing the solder ribbon on the battery cell, the battery cell is first lifted from the guide plate to prevent the battery cell from excessive contact with other structures. The traction mechanism then pulls the solder ribbon. During the traction process, the solder ribbon moves in the chute and auxiliary chute. The chute and auxiliary chute prevent the solder ribbon from swinging during the traction process, so that the error between the solder ribbon and the silver paste point on the battery cell is within an effective and controllable range, thereby further improving the accuracy of the connection between the solder ribbon and the silver paste point on the battery cell. Before the pressing net is placed on the battery cell, the traction mechanism and the front and tail clamping mechanisms cooperate with each other to clamp and position the solder ribbon to prevent the solder ribbon from shifting on the battery cell. The pressing net is then placed to firmly press the solder ribbon onto the battery cell.

[0029] As the cell and screen are fed into the welding area, they are lifted by the transfer mechanism, preventing them from contacting any other structures. This prevents secondary contact and reduces the alignment error between the solder ribbon and the silver paste points on the cell. By lifting the cell and screen during transport and using the screen to press the ribbon and cell together, welding accuracy is effectively improved, manual adjustments to the ribbon position are reduced, and the efficiency of soldering the ribbon and cell is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0031] Figure 2 This is a three-dimensional diagram of the position distribution of the soaking part, cutting part, combining part and reflux part of the present invention;

[0032] Figure 3 A three-dimensional diagram showing the position distribution of the feeding mechanism, cutting mechanism, front and tail clamping mechanism, and transfer mechanism of the present invention;

[0033] Figure 4 It is a three-dimensional diagram of the feeding mechanism of the present invention;

[0034] Figure 5 This is an exploded view of the front and tail clamp mechanism of the present invention;

[0035] Figure 6 An exploded view of the transfer mechanism of the present invention;

[0036] Figure 7 It is a partial three-dimensional diagram of the transfer mechanism of the present invention;

[0037] Figure 8 An exploded view of the welding platform of the present invention;

[0038] Figure 9 A partial three-dimensional diagram of the welding platform of the present invention;

[0039] Figure 10 A three-dimensional diagram showing the position distribution of the transfer mechanism and welding platform of the present invention;

[0040] Figure 11 A three-dimensional diagram of the traction mechanism of the present invention;

[0041] Figure 12 This is a three-dimensional diagram of the rear tail clip structure of the present invention;

[0042] Figure 13 A three-dimensional diagram showing the connection between the guide rod and the cutter fixing seat of the present invention;

[0043] Figure 14 A three-dimensional diagram of the detection unit of the present invention;

[0044] Figure 15 It is a three-dimensional diagram of the blanking portion of the present invention;

[0045] Figure 16 It is a three-dimensional diagram of the reflux portion of the present invention;

[0046] Figure 17 It is a three-dimensional diagram of the sheet material mechanism of the present invention;

[0047] Figure 18 It is a three-dimensional diagram of the double-material mechanism of the present invention;

[0048] Figure 19 This is a three-dimensional diagram of the position distribution of the sheet placement table and the reflow synchronous belt of the present invention.

[0049] In the figure: 1. Frame; 2. Unwinding section;

[0050] 3. Soaking section; 31. Soaking box; 32. Guide plate; 33. Pressing roller;

[0051] 4. Cutting unit; 41. Base; 42. Feeding mechanism; 43. Cutting mechanism; 44. Guide plate; 45. Slide plate; 46. Bottom plate; 47. Pressing cylinder; 48. Pressing plate; 49. Cutting cylinder; 410. Slider fixing seat; 411. Guide rail fixing seat;

[0052] 5. Assembly unit; 51. Front and tail clamp mechanism; 511. Front and tail motor base; 512. Lifting cam; 513. Sliding block; 514. Guide rail fixing plate; 515. Connecting plate; 516. Lifting block; 517. Front clamp cylinder; 518. Front and tail clamp; 519. Front supporting plate; 52. Transfer mechanism; 521. Plate supporting seat; 522. Guide plate; 523. Guide shaft; 524. Lower inclined seat; 525. Sliding block seat; 526. Feed fixing plate; 527. Transfer screw; 528. Output synchronous wheel; 529. Sheet mesh connecting plate; 5210. Transport screw; 5211. Sheet feeding seat; 53. Traction mechanism; 531. Clamping jaw stand; 532. Vertical clamping module; 533. Lifting cylinder; 534. Vertical clamping slider seat; 535. Clamping box; 536. Clamping jaw cylinder;

[0053] 6. Welding unit; 61. Infrared welding machine; 62. Welding platform; 621. Support frame; 622. Discharging motor; 623. Slider connecting plate; 624. Guide rod; 625. Translation cam; 626. Cam slide block; 627. Translation plate; 628. Support bar; 629. Tail motor base; 6210. Tail clamp connecting plate; 6211. Tail clamp fixing plate; 6212. Tail clamp cylinder; 6213. Tail movable block; 6214. Tail fixing seat; 6215. Tail clamp; 63. Guide rod; 64. Welding bracket;

[0054] 7. Detection unit; 71. String cutting slide; 72. String cutting screw; 73. Screw rod seat; 74. String cutting cylinder; 75. Cylinder slide; 76. Cutter fixing seat; 77. Profile; 78. Flat belt; 79. Lifting cylinder; 710. Rotating seat; 711. Flipping cylinder; 712. Crossbeam;

[0055] 8. Unloading section; 81. Crossbeam connecting plate; 82. Reclaiming motor; 83. Driven pulley; 84. Unloading cylinder; 85. Side slide bar; 86. Lower beam; 87. Unloading tilting cylinder; 88. Tilt beam; 89. Unloading tray;

[0056] 9. Reflux section; 91. Net pressing frame; 92. Upper plate; 93. Push-pull cylinder; 94. Net taking cylinder; 95. Lower plate;

[0057] 10. Feeding part; 11. Bracket; 12. Feeding module; 13. Double-material mechanism; 131. Vertical module; 132. Vertical plate; 133. Suction cup seat; 134. Magnetic fixing seat; 14. Single-piece mechanism; 15. Reflow timing belt; 16. Sheet mechanism; 161. Lifting bottom plate; 162. Slider module; 163. Translation screw; 164. Material box bottom plate; 17. Sheet placement table; 18. Screen pressing. DETAILED DESCRIPTION

[0058] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying 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 efforts are within the scope of protection of the present invention.

[0059] Example: Figure 1 - Figure 19 As shown, the present invention provides a technical solution, a solar cell string welding device, comprising a frame 1, an unwinding portion 2, the unwinding portion 2 being arranged at one end of the frame 1, from which the solder ribbon flows out, and further comprising a soaking portion 3, a cutting portion 4, an assembling portion 5, a welding portion 6, a blanking portion 8, a reflow portion 9, and a loading portion 10 installed in the frame 1;

[0060] The cutting part 4 cuts the solder strip soaked in the soaking part 3 into a certain quantity;

[0061] The welding part 6 performs infrared welding on the welding ribbon and the battery cell;

[0062] The reflux section 9 sends the pressing mesh 18 pressed on the battery cells and solder strips back to the loading section 10;

[0063] The unloading part 8 delivers the welded battery cells;

[0064] The loading unit 10 places the battery cell and the pressing screen 18 on the assembly unit 5, and the pressing screen 18 is placed on the previous battery cell carrying the solder ribbon;

[0065] The battery cells, welding ribbons and pressing net 18 are assembled and placed in the assembly part 5 , and the assembly part 5 lifts the battery cells, welding ribbons and pressing net 18 and sends them to the welding part 6 .

[0066] The immersion section 3 includes a immersion box 31 installed on the frame 1, a heating box installed at the bottom of the immersion box 31, two guide wheels rotatably installed inside the immersion box 31, and a pressure roller 33 rotatably installed in the middle of the immersion box 31. There is a gap between the pressure roller 33 and the bottom of the immersion box 31. The immersion box 31 stores flux. A guide plate 32 with a slope is installed on one side of a guide wheel inside the immersion box 31.

[0067] The cutting unit 4 further includes a base 41 mounted on the frame 1 , on which a feeding mechanism 42 for pushing the solder strip and a cutting mechanism 43 for cutting the solder strip are mounted;

[0068] The feeding mechanism includes a slide 45 slidably mounted on a base 41, a push cylinder for driving the slide 45 to perform linear motion is mounted on the base 41, a bottom plate 46 is mounted on the slide 45 via a pad, a cylinder mounting plate is mounted on the bottom plate 46 via a flip seat on both sides, a pressing cylinder 47 is mounted on the cylinder mounting plate, a pressing plate 48 is mounted on the output end of the pressing cylinder 47, and a plurality of pressure rods for applying pressure to the welding strip are mounted on the pressing plate 48;

[0069] The cutting mechanism 43 includes a guide rail fixing seat 411 installed on the base 41 and a slider fixing seat 410 slidably installed on the guide rail fixing seat 411. A cutting cylinder 49 is connected below the slider fixing seat 410. The cutting cylinder 49 is installed on the frame 1. Cutters that cooperate with each other to cut the welding strip are installed on the upper end of the guide rail fixing seat 411 and the lower side of the upper end of the slider fixing seat 410.

[0070] The cutting portion 4 includes a guide plate 44 with a sliding groove on the end surface to limit the shaking of the welding strip;

[0071] The assembly part 5 includes a front and rear clamping mechanism 51, a transfer mechanism 52 and a traction mechanism 53;

[0072] The front and tail clamping mechanism 51 includes a housing and a sliding block 513 slidably mounted in the housing. The housing is composed of a front and tail motor base 511, a guide rail fixing plate 514, and two reinforcing plates connecting the front and tail motor base 511 and the guide rail fixing plate 514. A guide rail for the sliding block 513 to slide is mounted on the guide rail fixing plate 514. The sliding block 513 is provided with a square groove, in which a lifting cam 512 is rotatably mounted. A front and tail motor eccentrically connected to the lifting cam 512 is provided outside the housing. A front support plate 519 with an auxiliary groove is installed above the sliding block 513. A front and tail clamp 518 driven by a front clamping cylinder 517 is provided on the sliding block 513.

[0073] The transfer mechanism 52 includes two plate supports 521 mounted on the frame 1, a feed fixing plate 526 mounted between the two plate supports 521, and a lifting structure for driving the feed fixing plate 526 to rise and fall. The two plate supports 521 are connected by a guide plate 522 mounted above. The guide plate 522 is provided with a plurality of through slots. The feed fixing plate 526 is provided with a sheet net connecting plate 529 and a sheet feeding seat 5211, each driven by a screw motor. Both the sheet net connecting plate 529 and the sheet feeding seat 5211 can pass through the through slots.

[0074] The traction mechanism 53 includes a clamping frame 531 installed on the vertical clamping module 532, the vertical clamping module 532 is installed on the frame 1, and a vertical clamping slider seat 534 is slidably installed on the clamping frame 531. The vertical clamping slider seat 534 is moved up and down by a lifting cylinder 533. A clamping box 535 is installed on the vertical clamping slider seat 534, and several clamping cylinders 536 are installed on one side of the clamping box 535.

[0075] The front clamping cylinder 517 is installed on the sliding block 513, and the output end of the front clamping cylinder 517 is connected to the connecting plate 515 slidably installed on the sliding block 513. The front supporting plate 519 is located above the connecting plate 515. The front tail clamp 518 is a clamp structure and the rotating shaft is installed below the front supporting plate 519. Several top blocks 516 for controlling the opening and closing of the front tail clamp 518 are provided on the connecting plate 515. The top block 516 is located on one side of the front tail clamp 518.

[0076] Slide rails are installed on both sides and the middle of the feed fixed plate 526, and the sheet mesh connecting plate 529 and the sheet feeding seat 5211 are slidably installed on the slide rails. The screw motor connecting the sheet mesh connecting plate 529 includes a transfer screw 527 rotatably installed on one side of the feed fixed plate 526 and a transfer motor installed on one side of the feed fixed plate 526 through a transfer motor seat. An output synchronous wheel 528 is installed on the output shaft of the transfer motor, and one end of the transfer screw 527 is installed with a driven synchronous wheel connected to the sheet mesh through a nut seat. The connecting plate 529, the sheet mesh connecting plate 529 is composed of a "C"-shaped carrier plate connected to the nut seat and a plurality of sheet mesh supporting plates and two feeding bars installed on the carrier plate. The feeding bars are located on the outside of the plurality of sheet mesh supporting plates. The screw motor connecting the sheet feeding seat 5211 includes a conveying screw 5210 installed on the feed fixing plate 526 through a bearing seat and a conveying motor driving the conveying screw 5210. The conveying screw 5210 is connected to the sheet feeding seat 5211 through the nut seat; the sheet feeding seat 5211 is composed of a conveying fixing seat connected to the nut seat and two sheet feeding forks.

[0077] The lifting structure includes a lower inclined seat 524 slidably mounted on the frame 1, two slide rails obliquely mounted on the lower inclined seat 524 and a guide shaft 523 connected to the feed fixed plate 526, a slider seat 525 connected to the feed fixed plate 526 is slidably mounted on the slide rail, and the lower inclined seat 524 is driven by a screw motor to perform linear motion.

[0078] The welding section 6 includes a welding platform 62 on one side of the transfer mechanism 52 and an infrared welding machine 61 located above the welding platform 62;

[0079] A welding bracket 64 is slidably mounted on one side of the infrared welding machine 61, one end of the welding bracket 64 is mounted on the frame 1, and a welding cylinder is mounted on the welding bracket 64 to drive the infrared welding machine 61 to move up and down;

[0080] The welding platform 62 includes a support frame 621, and the support frame 621 is equipped with a tail clamp structure on the side close to the transfer mechanism 52. The support frame 621 is equipped with a plurality of magnets with gaps between them and two support bars 628 through a welding flat plate. One end of the support bar 628 is installed on the support frame 621, and a supporting structure is installed on the lower inner side of the support frame 621. The supporting structure includes a translation plate 627 located below the support bar 628. Three discharge plates and two single-row magnets are installed on the translation plate 627. The two single-row magnets are located outside the three discharge plates. The single-row magnets are close to the support frame 621. The three discharge plates are separated by two support bars 628. One end of the discharge plate is located In the gap between the magnets, a plurality of guide rods 624 are connected to the bottom of the translation plate 627, and a slider connecting plate 623 is slidably connected to the bottom of the guide rods 624. The slider connecting plate 623 is slidably installed on the frame 1, and a discharge motor 622 and a screw connected to the shaft of the discharge motor 622 are installed on the frame 1 through a bearing support. The slider connecting plate 623 is threadedly connected to the screw, and an "L"-shaped bearing seat is installed on the slider connecting plate 623. A lifting motor is installed on one side of the bearing seat, and a translation cam 625 is eccentrically installed on the output end of the lifting motor. A cam sliding block 626 is sleeved on the outer side of the translation cam 625, and one end of the cam sliding block 626 is connected to the translation plate 627.

[0081] The rear tail clamp structure includes a rear tail motor base 629 mounted on the frame 1, a tail clamp connecting plate 6210 is slidably mounted on the rear tail motor base 629, a rear tail motor eccentrically connected to the rear tail cam is mounted on one side of the rear tail motor base 629, the rear tail cam is located in the cam groove on the tail clamp connecting plate 6210, a tail clamp fixing plate 6211 and a tail clamp cylinder 6212 are mounted on the tail clamp connecting plate 6210, two rear tail fixing seats 6214 and a rear tail movable block 6213 are slidably mounted on the tail clamp fixing plate 6211, and the two rear tail fixing seats 6214 are mounted above They are connected together with a "C"-shaped clamping plate, and a rear tail clamp 6215 for clamping the welding strip is formed above the "C"-shaped clamping plate. The rear tail movable block 6213 is located between the two rear tail fixed seats 6214. The rear tail movable block 6213 extends upward to form a tail clamping plate, and a sub-clamping plate is formed above the tail clamping plate to cooperate with the rear tail clamp 6215 to clamp the welding strip. Bearings are provided on the side where the rear tail movable block 6213 and a rear tail fixed seat 6214 are close to each other, and a clamping wedge block is provided at the output end of the tail clamp cylinder 6212, and the inclined surfaces on both sides of the clamping wedge block are in contact with the two bearings respectively.

[0082] The frame 1 is provided with a detection portion 7 on one side of the welding portion 6, and two guide rods 63 are provided on one side of the support frame 621;

[0083] The detection part 7 includes a string cutting slide 71 slidably mounted on the frame 1 and a screw seat 73 mounted on the frame 1, a string cutting wire rod 72 is rotatably mounted on the screw seat 73, the string cutting wire rod 72 is threadedly connected to the string cutting slide 71, one end of the string cutting wire rod 72 is connected to the string cutting motor, the guide rod 63 passes through the string cutting slide 71, a string cutting cylinder 74 and a cutter fixing seat 76 are installed on the string cutting slide 71, a cylinder slide 75 is slidably mounted on the cutter fixing seat 76, the output end of the string cutting cylinder 74 is connected to the lower end of the cylinder slide 75, the string cutting cylinder 74 drives the cylinder slide 75 to move up and down, and a cutter is respectively installed above the cutter fixing seat 76 and above and below the cylinder slide 75. The cutter is used to cut the welding strip so that the battery string reaches a certain production specification length;

[0084] The detection part 7 also includes a profile 77, a flat belt 78 and a lifting cylinder 79 installed on the frame 1. The flat belt 78 is located on one side of the string cutting slide 71. An "L"-shaped rotating seat 710 is slidably installed on the profile 77. A crossbeam 712 is rotatably installed between the two rotating seats 710. A flipping cylinder 711 for driving the crossbeam 712 to flip is installed on one side of one of the rotating seats 710. Several suction cup fixing plates with suction cups are installed under the crossbeam 712. The output end of the lifting cylinder 79 is connected to the rotating seat 710.

[0085] A transfer platform is provided between the flat belt 78 and the cutter fixing seat 76. The transfer platform is used to temporarily hold the battery cells welded with the welding strips. The height of the transfer platform is consistent with that of the flat belt 78 and is higher than the cutter fixing seat 76.

[0086] The feeding part 8 is located on one side of the detection part 7. The feeding part 8 includes a feeding tray 89 and two feeding cross braces installed on the frame 1. The two feeding cross braces are located above the feeding tray 89 and the flat belt 78. A crossbeam connecting plate 81 is slidably installed on the feeding cross brace. Both ends of the crossbeam connecting plate 81 are connected to the lower beam 86 through side sliding rods 85. A feeding cylinder 84 connected to the lower beam 86 is installed below the middle of the crossbeam connecting plate 81. A feeding motor 82 and a driven pulley 83 are respectively installed on the frame 1 at both ends of the two feeding cross braces. The output end of the feeding motor 82 is installed with a driving pulley, and the driving pulley and the driven pulley 83 are connected by a synchronous belt. The crossbeam connecting plate 81 is connected to one side of the synchronous belt. Extraction bearing seats are installed below both ends of the lower beam 86, and a flip beam 88 is rotatably installed between the two extraction bearing seats. Several suction cup fixing plates with suction cups are installed below the flip beam 88, and a feeding flip cylinder 87 for driving the flip beam 88 to rotate is installed on one side of the extraction bearing seat.

[0087] The reflux section 9 includes a screen pressing frame 91 installed on the frame 1, on which an upper plate 92 and a push-pull cylinder 93 for driving the upper plate 92 to perform linear motion are slidably installed, a screen taking cylinder 94 is installed on the upper plate 92, and a lower plate 95 is installed on the output end of the screen taking cylinder 94, and a plurality of electromagnets are installed on the lower plate 95. One end of the screen pressing frame 91 is located above the support frame 621.

[0088] The feeding section 10 includes a bracket 11 mounted on the frame 1, a reflow timing belt 15, a sheet material mechanism 16, and a sheet placement table 17. The bracket 11 is mounted with a feeding module 12, and the feeding module 12 is mounted with a double-material mechanism 13 and a single-sheet mechanism 14. One end of the reflow timing belt 15 is located below the press frame 91, the sheet placement table 17 is located inside the reflow timing belt 15, and the sheet material mechanism 16 is located on one side of the reflow timing belt 15.

[0089] The double-material mechanism 13 picks up the pressing net 18 from the reflow synchronous belt 15 and picks up the battery cell from the cell placement table 17. Under the drive of the loading module 12, the battery cell and the pressing net 18 are placed on the assembly part 5.

[0090] The double-material mechanism 13 includes a vertical module 131 mounted on the slide of the loading module 12. A vertical plate 132 is mounted on the vertical module 131. A suction cup seat 133 is mounted at the lower end of the vertical plate 132. Both ends of the suction cup seat 133 are mounted with an iron-magnetic fixing seat 134. The iron-magnetic fixing seat 134 is mounted with an electromagnet. A suction cup for adsorbing the battery cell is provided in the middle of the suction cup seat 133.

[0091] Driven by the loading module 12, the single-cell mechanism 14 picks up a cell from the sheet mechanism 16 and places it on the cell placement table 17. The single-cell mechanism 14 comprises an L-shaped profile mounted on the slide of the loading module 12. A cylinder is mounted at the lower end of the L-shaped profile, and a suction cup carrier is mounted at the output end of the cylinder. The suction cup carrier is equipped with a suction cup for adsorbing the cell.

[0092] The movement of the single-chip mechanism 14 before picking up the battery cell is synchronized with the movement of the double-material mechanism 13 before picking up the battery cell and pressing the net 18, and the picking action and the unloading action are also basically synchronized.

[0093] The sheet mechanism 16 comprises a slider module 162 mounted on the frame 1 and a profile frame that slidably supports the magazine base plate 164. The slider module 162 is located inside the profile frame. Mounted on the slider module 162 is a support profile that supports the lifting base plate 161. The magazine base plate 164 is provided with at least three lifting base plates 161, upon which multiple battery cells are placed. Mounted on the profile frame is a translation screw 163 that is threadedly connected to the magazine base plate 164 and connected to a translation motor. Driven by the translation motor, the translation screw 163 drives the magazine base plate 164 in linear motion on the profile frame, allowing the support profile to lift the different lifting base plates 161 upward.

[0094] The working principle of the present invention is as follows: the battery cells to be welded are placed on the lifting base plate 161, and a certain number of pressing nets 18 are placed on the reflow synchronous belt 15.

[0095] When it is necessary to weld the battery cells and the welding strips, the lower inclined seat 524 is translated under the drive of the screw motor, and cooperates with the guide shaft 523 to make the slider seat 525 drive the feed fixing plate 526 to rise, so that the sheet mesh connecting plate 529 and the sheet feeding seat 5211 are higher than the guide plate 522. Under the drive of the loading module 12, the single-sheet mechanism 14 picks up the battery cells from the sheet material mechanism 16 and places them on the sheet placement table 17. For the first battery cell, the double-material mechanism 13 only picks up the battery cell from the cell placement table 17, and does not pick up the pressing net 18 from the reflow synchronous belt 15. After the double-material mechanism 13 places the first battery cell on the cell feeding seat 5211, the double-material mechanism 13 and the single-cell mechanism 14 move again, and the single-cell mechanism 14 picks up the battery cell from the cell material mechanism 16. The double-material mechanism 13 picks up the battery cell and the pressing net 18 from the cell placement table 17 and the reflow synchronous belt 15. Then, the single-cell mechanism 14 places the battery cell on the cell placement table 17. Before the double-material mechanism 13 places the battery cell and the pressing net 18, the cell feeding seat 5211 moves a certain distance toward the welding part 6 under the drive of the conveying screw 5210, for the next The placement of a battery cell makes room, and then the lower inclined seat 524 drives the feed fixing plate 526 to descend, so that the battery cell is temporarily placed on the guide plate 522, and the feeding seat 5211 is reset under the drive of the conveying screw 5210, and the sheet net connecting plate 529 moves to the bottom of the battery cell under the drive of the transfer screw 527. After the sheet net connecting plate 529 moves into place, the lower inclined seat 524 lifts the feed fixing plate 526 again, so that the battery cell is supported by the sheet net connecting plate 529. After the feeding seat 5211 and the sheet net connecting plate 529 are lifted, the double material mechanism 13 places the battery cell on the feeding seat 5211, and places the pressing net 18 on the battery cell on the sheet net connecting plate 529.

[0096] Before the double-material mechanism 13 places the pressing screen 18, the vertical clamping module 532 drives the clamping box 535 to move toward the cutting mechanism 43. After moving into place, before the feeding mechanism 42 feeds the soldering tape, the pressing cylinder 47 pushes the pressing plate 48 downward so that the pressing rod and the bottom plate 46 cooperate to clamp the soldering tape. When the soldering tape needs to be pushed, the slide 45 moves under the drive of the pushing cylinder and moves toward the slider fixing seat 410 and the guide rail fixing seat 411, so that one end of the soldering tape passes through the cutter on the slider fixing seat 410 and the guide rail fixing seat 411. The feeding mechanism 42 The welding strip is pushed forward a certain length, and the clamping cylinder 536 clamps the welding strip. After clamping the welding strip, the pressing cylinder 47 pulls the pressure plate 48 upward so that the welding strip can pass freely through the cutter. The slide plate 45 is reset, and the vertical clamping module 532 drives the clamping box 535 to move back. After moving a certain distance, the pressing cylinder 47 pushes the pressure plate 48 downward again, so that the pressure rod and the bottom plate 46 clamp the welding strip again, and the cutting cylinder 49 pulls the slider fixing seat 410 downward so that the cutters on the slider fixing seat 410 and the guide rail fixing seat 411 cooperate with each other to cut the welding strip. During the process of the vertical clamping module 532 driving the welding ribbon to move, the welding ribbon has been moving in the slide groove of the guide plate 44. When the clamping box 535 drives the welding ribbon to move on the guide plate 44, the lifting cam 512 rotates and drives the sliding block 513 to move upward, so that the sliding block 513 drives the front support plate 519 to rise and be flush with the guide plate 44. After the welding ribbon moves out of the guide plate 44, it will move in the auxiliary groove on the front support plate 519. When the clamping box 535 moves to the other side of the battery cell, the front clamping cylinder 517 works to push the connecting plate 515 upward. Under the squeezing action of the top block 516, the front tail clamp 518 clamps one end of the welding ribbon. Then the lifting cam 512 rotates and drives the sliding block 513 to move downward. The lifting cylinder 533 drives the clamping box 535 to descend. With the cooperation of the front tail clamp 518 and the clamping claw cylinder 536, the welding ribbon is placed on the battery cell.

[0097] Before the press screen 18 is placed on the cell, the front and rear clamps 518 and the clamping jaws 536 continuously clamp the solder ribbon, ensuring that it remains on the cell's solder joints. After the press screen 18 is placed on the cell by the double-material mechanism 13, the clamping jaws 536 and the front and rear clamps 518 release the solder ribbon. Driven by the lifting cylinder 533, the clamping box 535 returns to its original position and waits for the next clamping of the solder ribbon. The front and rear clamps 518 return to their original position and wait for the next clamping of the solder ribbon.

[0098] After the pressing net 18 is placed on the battery cell, the transfer screw 527 drives the sheet net connecting plate 529 to move toward the welding part 6. During the movement, the sheet feeding seat 5211 pushes the upper battery cell forward a certain distance. After it is pushed into place, the lower inclined seat 524 drives the feed fixing plate 526 to descend a certain height. However, at this time, the battery cell on the sheet net connecting plate 529 is still higher than the guide plate 522. After the sheet net connecting plate 529 places the battery cell on the translation plate 627, the sheet net connecting plate 529 is reset under the drive of the transfer screw 527. During the reset process, the lower inclined seat 524 drives the feed fixing plate 526 to descend a certain height. The inclined seat 524 drives the feed fixed plate 526 down again, so that the height of the sheet net connecting plate 529 is lower than the guide plate 522, allowing the sheet feeding seat 5211 to place the battery cell on the guide plate 522. After that, the sheet feeding seat 5211 returns to its original position, and the sheet net connecting plate 529 is driven by the transfer screw 527 to move to the bottom of the battery cell. Then the lower inclined seat 524 lifts the feed fixed plate 526 again, so that the sheet net connecting plate 529 lifts the battery cell again and is higher than the guide plate 522. The sheet feeding seat 5211 rises again to receive the next battery cell. The traction mechanism 53 works again and cooperates with the front and rear clamping mechanism 51 again to pull and clamp the welding ribbon, so that the welding ribbon falls again on the battery cell on the sheet net connecting plate 529.

[0099] Before the battery cells are placed on the translation plate 627 , the translation cam 625 rotates and pushes the cam sliding block 626 upwards, so that the translation plate 627 is higher than the support frame 621 to facilitate receiving the battery cells. After the battery cell is placed on the translation plate 627, the translation cam 625 rotates again and the cam sliding block 626 descends, so that the height of the translation plate 627 is lower than the support frame 621, and the battery cell falls on the magnet inside the support frame 621. Then the infrared welding machine 61 descends and starts working to weld the welding strip and the battery cell. Whenever the sheet net connecting plate 529 moves a new battery cell to the welding part 6, the translation cam 625 rotates again and pushes the cam sliding block 626 upward. The translation plate 627 lifts the battery cell and the pressing net 18. The discharge motor 622 uses the screw rod to drive the slider connecting plate 623 to move a certain distance toward the detection part 7 to make room for the next battery cell and the pressing net 18. After that, the discharge motor 622 stops working, the translation cam 625 rotates and the cam sliding block 626 descends, so that the battery cell and the pressing net 18 fall on the support frame 621 again. After the cam sliding block 626 descends, the discharge motor 622 uses the screw rod to send the translation plate 627 back to its original position. After the translation plate 627 is reset, the translation cam 625 again makes the translation plate 627 higher than the support frame 61 and receives new battery cells and pressing nets 18.

[0100] After the cell, solder ribbon, and press screen 18 land on the support frame 621, the rear motor drives the rear cam to rotate, causing the tail clamp connecting plate 6210 to rise, allowing the rear clamp 6215 to reach a height that can clamp the solder ribbon. The tail clamp cylinder 6212 then moves the clamping wedge upward. Supported by the bearing, the rear movable block 6213 and the rear fixed seat 6214 move relative to each other, allowing the rear clamp 6215 to cooperate with the auxiliary clamp plate to clamp the solder ribbon, preventing the solder ribbon from shifting relative to the cell during the welding process. Before the translation plate 627 moves the cell forward, the tail clamp cylinder 6212 resets, the rear movable block 6213 and the rear fixed seat 6214 reset under the spring reset, and the rear clamp 6215 releases the solder ribbon.

[0101] As the sheet-net connecting plate 529 continuously transports the battery cells and the pressing net 18, and as the structures such as the translation cam 625, the cam sliding block 626 and the discharge motor 622 cooperate with each other, the welded battery cells, welding strips and pressing net 18 are continuously sent to the detection part 7.

[0102] When the welded battery cells, welding strips and pressing net 18 are below the reflow section 9, the push-pull cylinder 93 works, so that the upper plate 92 drives the lower plate 95 to move above the pressing net 18, and the net-taking cylinder 94 pushes the lower plate 95 downward and cooperates with the electromagnet to remove the pressing net 18 from the battery cells. The net-taking cylinder 94 drives the lower plate 95 to reset, and the push-pull cylinder 93 drives the upper plate 92 to reset, so that the lower plate 95 moves to above the reflow synchronous belt 15. The net-taking cylinder 94 and the electromagnet cooperate with each other to make the lower plate 95 place the pressing net 18 on the reflow synchronous belt 15, and the reflow synchronous belt 15 transports the pressing net 18 toward the sheet placement table 17, which is convenient for the double-material mechanism 13 to pick up.

[0103] After the press screen 18 is removed, the cell and its ribbon are transferred to the flat belt 78 by the translation plate 627. Before transportation, the stringing cylinder 74 pushes the cylinder slide 75 upward, separating the cylinder slide 75 from the cutter on the cutter holder 76, making it easier for the translation plate 627 to pass through. The translation plate 627 places the cell on the transfer table. As more and more cells are placed on the translation plate 627, the previous cell is replaced by the next cell, and the previous cell falls on the flat belt 78. As the translation plate 627 continues to push, the cell is continuously transported to the flat belt 78.

[0104] When it is necessary to inspect and unload the battery cells, the lifting cylinder 79 pulls the crossbeam 712 downward through the rotating seat 710, allowing the suction cups to absorb the battery cells. The lifting cylinder 79 then pushes the rotating seat 710 upward. After reaching a certain height, the flip cylinder 711 drives the crossbeam 712 to flip 180 degrees, making it easier for the staff to inspect. After the inspection is completed, the material-retrieving motor 82 works and drives the synchronous belt to rotate. The synchronous belt drives the crossbeam connecting plate 81 to move above the crossbeam 712. After reaching above the crossbeam 712, the unloading cylinder 84 works and moves the flip beam 88 to the top of the crossbeam 712. The suction cups on the flip beam 88 are close to the battery cells and absorb them with negative pressure. The suction cups on the crossbeam 712 release the negative pressure and release the positive pressure, allowing the suction cups on the flip beam 88 to absorb the battery cells. The unloading cylinder 81 then drives the flip beam 88 to reset. The material-retrieving motor 82 rotates in the opposite direction, causing the crossbeam connecting plate 81 to reset under the drive of the synchronous belt, and the flip beam 88 is located above the unloading tray 89. The unloading cylinder 84 pushes the flip beam 88 downward, and then the suction cup releases the negative pressure and releases the positive pressure, so that the battery cell falls on the unloading tray 89. After the battery cell falls, the unloading cylinder 84 drives the flip beam 88 to reset.

[0105] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A solar cell string welding device, comprising a frame (1) and a reeling portion (2), wherein the reeling portion (2) is arranged at one end of the frame (1) and the welding ribbon flows out from the reeling portion (2), characterized in that: It also includes a soaking part (3), a cutting part (4), a combining part (5), a welding part (6), a feeding part (8), a reflux part (9) and a feeding part (10) installed in the frame (1); The cutting section (4) quantitatively cuts the solder strip soaked in the soaking section (3); The welding section (6) performs infrared welding on the welding ribbon and the battery cell; The reflow section (9) sends the pressing net (18) pressed on the battery cell and the solder strip back to the loading section (10); The unloading section (8) delivers the welded battery cells; The loading part (10) places the battery cell and the pressing net (18) on the assembly part (5), and the pressing net (18) is placed on the previous battery cell carrying the welding ribbon; The battery cell, the welding ribbon and the pressing net (18) are assembled and placed in the assembly part (5), and the assembly part (5) lifts the battery cell, the welding ribbon and the pressing net (18) and then sends them to the welding part (6); The cutting portion (4) comprises a first guide plate (44) with an end surface provided with a sliding groove for limiting the shaking of the welding strip; The assembly part (5) includes a front and rear clamping mechanism (51), a transfer mechanism (52) and a traction mechanism (53); The front and tail clamp mechanism (51) comprises a housing and a sliding block (513) slidably mounted in the housing, the sliding block (513) being provided with a square groove, a lifting cam (512) being rotatably mounted in the square groove, a front and tail motor eccentrically connected to the lifting cam (512) being provided outside the housing, a front support plate (519) having an auxiliary groove being provided above the sliding block (513), and a front and tail clamp (518) driven by a front clamp cylinder (517) being provided on the sliding block (513); The transfer mechanism (52) includes two plate supports (521) installed on the frame (1), a feed fixing plate (526) installed between the two plate supports (521), and a lifting structure for driving the feed fixing plate (526) to move up and down. The two plate supports (521) are connected by a second guide plate (522) installed above. The second guide plate (522) is provided with a plurality of through slots. The feed fixing plate (526) is provided with a sheet net connecting plate (529) and a sheet feeding seat (5211) respectively driven by a screw motor. Both the sheet net connecting plate (529) and the sheet feeding seat (5211) can pass through the through slots. The traction mechanism (53) includes a clamping claw stand (531) mounted on a vertical clamping module (532), the vertical clamping module (532) being mounted on a frame (1), a vertical clamping slider seat (534) being slidably mounted on the clamping claw stand (531), the vertical clamping slider seat (534) being moved up and down by a lifting cylinder (533), a clamping box (535) being mounted on the vertical clamping slider seat (534), and a plurality of clamping claw cylinders (536) being mounted on one side of the clamping box (535); Slide rails are installed on both sides and the middle of the feed fixed plate (526), ​​and the sheet net connecting plate (529) and the sheet feeding seat (5211) are slidably installed on the slide rails. The screw motor connecting the sheet net connecting plate (529) includes a transfer screw (527) rotatably installed on one side of the feed fixed plate (526) and a transfer motor installed on one side of the feed fixed plate (526) through a transfer motor seat. An output synchronous wheel (528) is installed on the output shaft of the transfer motor. One end of the transfer screw (527) is installed with a driven synchronous wheel connected to the synchronous belt. The transfer screw (527) is connected to the sheet net connecting plate (529) through a nut seat. The screw motor connecting the sheet feeding seat (5211) includes a conveying screw (5210) installed on the feed fixed plate (526) through a bearing seat and a conveying motor driving the conveying screw (5210). The conveying screw (5210) is connected to the sheet feeding seat (5211) through a nut seat. The lifting structure includes a lower inclined seat (524) slidably mounted on the frame (1), two slide rails obliquely mounted on the lower inclined seat (524) and a guide shaft (523) connected to a feed fixed plate (526), ​​a slider seat (525) connected to the feed fixed plate (526) is slidably mounted on the slide rail, and the lower inclined seat (524) is driven by a screw motor to perform linear motion.

2. The solar cell string welding device according to claim 1, characterized in that: The front clamping cylinder (517) is mounted on the sliding block (513), and the output end of the front clamping cylinder (517) is connected to a connecting plate (515) slidably mounted on the sliding block (513). The front supporting plate (519) is located above the connecting plate (515). The front tail clamp (518) is a clamp structure and a rotating shaft is mounted below the front supporting plate (519). A plurality of top blocks (516) for controlling the opening and closing of the front tail clamp (518) are provided on the connecting plate (515), and the top blocks (516) are located on one side of the front tail clamp (518).

3. The solar cell string welding device according to claim 1, characterized in that: The soaking section (3) comprises a soaking box (31) mounted on a frame (1), a heating box mounted at the bottom of the soaking box (31), two guide wheels rotatably mounted inside the soaking box (31), and a pressing roller (33) rotatably mounted in the middle of the soaking box (31). A guide plate (32) with a slope is mounted on one side of one guide wheel inside the soaking box (31).

4. The solar cell string welding device according to claim 1, characterized in that: The cutting portion (4) further comprises a base (41) mounted on the frame (1), wherein a feeding mechanism (42) for pushing the solder strip and a cutting mechanism (43) for cutting the solder strip are mounted on the base (41); The feeding mechanism includes a slide plate (45) slidably mounted on a base (41), a push cylinder for driving the slide plate (45) to perform linear motion is mounted on the base (41), a bottom plate (46) is mounted on the slide plate (45) via a pad, the bottom plate (46) is mounted with a cylinder mounting plate via flip seats on both sides, a pressing cylinder (47) is mounted on the cylinder mounting plate, a pressing plate (48) is mounted on the output end of the pressing cylinder (47), and a plurality of pressing rods for applying pressure to the welding strip are mounted on the pressing plate (48); The cutting mechanism (43) comprises a guide rail fixing seat (411) mounted on the base (41) and a slider fixing seat (410) slidably mounted on the guide rail fixing seat (411), a cutting cylinder (49) being connected below the slider fixing seat (410), and the cutting cylinder (49) being mounted on the frame (1), and cutters for mutually cooperating in cutting the welding strip being mounted on the upper end of the guide rail fixing seat (411) and the lower side of the upper end of the slider fixing seat (410).

5. The solar cell string welding device according to claim 1, characterized in that: The welding part (6) includes a welding platform (62) on one side of the transfer mechanism (52) and an infrared welding machine (61) located above the welding platform (62); A welding bracket (64) is slidably mounted on one side of the infrared welding machine (61), one end of the welding bracket (64) is mounted on the frame (1), and a welding cylinder for driving the infrared welding machine (61) to move up and down is mounted on the welding bracket (64); The welding platform (62) includes a support frame (621), and the support frame (621) is installed with a tail clamp structure on the side close to the transfer mechanism (52). The support frame (621) is installed with a plurality of magnets with gaps between them and two support bars (628) through a welding plate. One end of the support bar (628) is installed on the support frame (621). A supporting structure is installed below the inner side of the support frame (621), and the supporting structure includes a translation plate (627) located below the support bar (628). Three discharge plates are installed on the translation plate (627). The three discharge plates are separated by two support bars (628). One end of the discharge plate is located in the gap between the magnets. The bottom of the translation plate (627) is connected to the support bar (628). There are a plurality of guide rods (624), and a slider connecting plate (623) is slidably connected to the lower portion of the guide rods (624). The slider connecting plate (623) is slidably mounted on the frame (1). A discharge motor (622) and a screw connected to the shaft of the discharge motor (622) are mounted on the frame (1) through a bearing support. The slider connecting plate (623) is threadedly connected to the screw. An "L"-shaped bearing seat is mounted on the slider connecting plate (623). A lifting motor is mounted on one side of the bearing seat. A translation cam (625) is eccentrically mounted on the output end of the lifting motor. A cam sliding block (626) is sleeved on the outer side of the translation cam (625). One end of the cam sliding block (626) is connected to the translation plate (627).

6. The solar cell string welding device according to claim 5, characterized in that: The rear tail clamp structure comprises a rear tail motor base (629) mounted on a frame (1), a tail clamp connecting plate (6210) being slidably mounted on the rear tail motor base (629), a rear tail motor eccentrically connected to a rear tail cam being mounted on one side of the rear tail motor base (629), the rear tail cam being located in a cam groove on the tail clamp connecting plate (6210), a tail clamp fixing plate (6211) and a tail clamp cylinder (6212) being mounted on the tail clamp connecting plate (6210), two rear tail fixing seats (6214) and a rear tail movable block (6213) being slidably mounted on the tail clamp fixing plate (6211), the two rear tail fixing seats being eccentrically connected to a rear tail cam being located in a cam groove on the tail clamp connecting plate (6210), A "C"-shaped clamping plate is commonly connected above (6214), and a rear tail clamp (6215) for clamping the welding strip is formed above the "C"-shaped clamping plate. The rear tail movable block (6213) is located between the two rear tail fixed seats (6214). The rear tail movable block (6213) extends upward to form a tail clamping plate. A secondary clamping plate is formed above the tail clamping plate to cooperate with the rear tail clamp (6215) to clamp the welding strip. The rear tail movable block (6213) and a rear tail fixed seat (6214) are both provided with bearings on the side close to each other. A clamping wedge block is provided at the output end of the tail clamp cylinder (6212), and the inclined surfaces on both sides of the clamping wedge block are in contact with the two bearings respectively.

7. The solar cell string welding device according to claim 5, characterized in that: The frame (1) is provided with a detection portion (7) on one side of the welding portion (6), and the support frame (621) is provided with two guide rods (63) on one side; The detection part (7) includes a string cutting slide (71) slidably mounted on the frame (1) and a screw rod seat (73) mounted on the frame (1), a string cutting screw rod (72) is rotatably mounted on the screw rod seat (73), the string cutting screw rod (72) is threadedly connected to the string cutting slide (71), one end of the string cutting screw rod (72) is connected to the string cutting motor, the guide rod (63) passes through the string cutting slide (71), a string cutting cylinder (74) and a cutter fixing seat (76) are mounted on the string cutting slide (71), a cylinder slide seat (75) is slidably mounted on the cutter fixing seat (76), an output end of the string cutting cylinder (74) is connected to the lower end of the cylinder slide seat (75), and cutters are respectively mounted above the cutter fixing seat (76) and on the lower side above the cylinder slide seat (75); The detection part (7) further includes a profile (77), a flat belt (78) and a lifting cylinder (79) mounted on the frame (1), wherein the flat belt (78) is located on one side of the string cutting slide (71), an "L"-shaped rotating seat (710) is slidably mounted on the profile (77), a crossbeam (712) is rotatably mounted between two of the rotating seats (710), a flipping cylinder (711) for driving the crossbeam (712) to flip is mounted on one side of one of the rotating seats (710), a plurality of suction cup fixing plates with suction cups are mounted below the crossbeam (712), and an output end of the lifting cylinder (79) is connected to the rotating seat (710); The blanking part (8) is located on one side of the detection part (7). The blanking part (8) includes a blanking tray (89) and two blanking cross braces installed on the frame (1). The two blanking cross braces are located above the blanking tray (89) and the flat belt (78). A beam connecting plate (81) is slidably installed on the blanking cross brace. Both ends of the beam connecting plate (81) are connected to the lower beam (86) through a side sliding rod (85). A blanking cylinder (84) connected to the lower beam (86) is installed below the middle of the beam connecting plate (81). The frame (1) is respectively equipped with a take-up cylinder at both ends of the two blanking cross braces. A feeding motor (82) and a driven pulley (83), the output end of the feeding motor (82) is equipped with a driving pulley, the driving pulley and the driven pulley (83) are connected by a synchronous belt, the crossbeam connecting plate (81) is connected to one side of the synchronous belt, extraction bearing seats are installed below both ends of the lower beam (86), a turning beam (88) is rotatably installed between the two extraction bearing seats, a plurality of suction cup fixing plates with suction cups are installed below the turning beam (88), and a feeding turning cylinder (87) for driving the turning beam (88) to rotate is installed on one side of the extraction bearing seat.

8. The solar cell string welding device according to claim 5, characterized in that: The reflux section (9) includes a screen pressing frame (91) mounted on a frame (1), an upper plate (92) and a push-pull cylinder (93) for driving the upper plate (92) to perform linear motion are slidably mounted on the screen pressing frame (91), a screen taking cylinder (94) is mounted on the upper plate (92), a lower plate (95) is mounted on the output end of the screen taking cylinder (94), and a plurality of electromagnets are mounted on the lower plate (95), and one end of the screen pressing frame (91) is located above the support frame (621); The feeding part (10) comprises a bracket (11), a reflow synchronous belt (15), a sheet material mechanism (16) and a sheet placement table (17) mounted on the frame (1); a feeding module (12) is mounted on the bracket (11); a double-material mechanism (13) and a single-sheet mechanism (14) are mounted on the feeding module (12); one end of the reflow synchronous belt (15) is located below the press frame (91); the sheet placement table (17) is located inside the reflow synchronous belt (15); and the sheet material mechanism (16) is located on one side of the reflow synchronous belt (15); The double-material mechanism (13) picks up the pressing net (18) from the reflow synchronous belt (15), picks up the battery sheet from the sheet placement table (17), and places the battery sheet and the pressing net (18) on the assembly part (5) under the drive of the loading module (12); Driven by the loading module (12), the single-chip mechanism (14) picks up the battery cell from the sheet mechanism (16) and places it on the cell placement table (17).

Images