Solar cell string welding device

Abstract

The invention discloses a solar cell string welding device, and relates to the technical field of solar cell string production, the welding device comprises an unreeling part, a cutting part, a combination part, a welding part, a blanking part and a feeding part, the unreeling part unreels a welding strip, the cutting part cuts the welding strip with a specified length, and the combination part is used for combining the welding strip with the blanking part; the feeding part places a single battery piece on the combination part and places the pressing net on the previous battery piece, the welding strip is pressed on the battery piece through the pressing net, the combination part comprises a traction mechanism for clamping and pulling the welding strip, the traction mechanism places the cut welding strip on the battery piece, the combination part transfers the battery piece, the welding strip and the pressing net to the welding part, and the welding part is used for welding the battery piece. In the transferring process, the battery piece, the welding strip and the pressing net do not make contact with any other mechanism, the position deviation of the welding strip on the battery piece is prevented, and then the welding accuracy and the product yield are improved. After the welding part completes welding, the discharging part transfers the welded battery pieces.

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 of high-efficiency solar cell modules has increasingly stringent requirements on welding accuracy. In the string welding process of crystalline silicon solar cells, the precise welding of the welding ribbon (usually tinned copper ribbon) and the main grid line of the cell is the core link that determines the electrical conductivity and mechanical reliability of the module. However, the problem of welding ribbon positioning deviation in traditional welding process has become a key bottleneck restricting the improvement of welding quality.

[0003] In the prior art, the welding of the soldering ribbon to the battery cell is usually completed by automated equipment. The main process includes cutting, positioning, and pre-placing the soldering ribbon on the battery cell busbar, and then achieving electrical connection through welding. However, in actual production, it is found that the soldering ribbon is easily affected by mechanical vibration, inertia, etc. during the positioning and transfer process, resulting in the position of the soldering ribbon and the busbar being offset, and subsequent manual re-inspection and rework are required to make up for the precision defects, which significantly increases production costs and restricts the improvement of production line beats. 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 part, the unwinding part is arranged at one end of the frame, the solder strip flows out from the unwinding part, and also comprises a soaking part, a cutting part, a combination part, a welding part, a feeding part, a reflow part and a feeding part installed in the frame;

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

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

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

[0009] The unloading part delivers the welded battery cell; the loading part places the battery cell and the pressing net on the assembly part, and the pressing net is placed on the previous battery cell carrying 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 for limiting the shaking of the welding strip on the end surface; the assembly part includes a front tail clamp mechanism, a transfer mechanism and a traction mechanism; the front tail clamp mechanism includes a casing and a sliding block slidably installed in the casing, the casing 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 arranged 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 arranged outside the casing, a front support plate with an auxiliary groove is arranged above the sliding block, and a front tail clamp driven by a front clamp cylinder is arranged on the sliding block;

[0012] The transfer mechanism includes two plate supports installed on the frame, a feed fixing plate installed 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 installed on the top, and a plurality of through slots are arranged 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 a plurality of clamping claw cylinders are installed on one side of the clamping box.

[0014] The front clamp cylinder is installed on the sliding block, and the output end of the front clamp 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. A plurality of top blocks for controlling the opening and closing of the front tail clamps are arranged on the connecting plate, and the top blocks are 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 film 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 a driven synchronous wheel connected to the sheet net connecting plate through a synchronous belt is installed at one end of the transfer screw. The transfer screw is connected to the sheet net connecting plate through a nut seat. The sheet net connecting plate is composed of a "C"-shaped carrier plate connected to the nut seat, a plurality of sheet net support plates installed on the carrier plate, and two feeding strips. The feeding strips are located on the outside of the plurality of sheet net support plates. The screw motor connected to the film 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 film feeding seat through a nut seat; the film feeding seat is composed of a transport fixed seat connected to the nut seat and two film feeding forks.

[0016] The lifting 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 pressing 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 welding strip and a cutting mechanism for cutting the welding strip are mounted;

[0019] The feeding mechanism includes a slide plate slidably mounted on a base, a push cylinder 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 flip seats 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 pressing 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 support structure is installed on the lower inner side of the support frame, and the support 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 rod connected to the shaft of the discharging motor are installed on the frame through a bearing support. The slider connecting plate is threadedly connected to the screw rod, and an "L"-shaped bearing seat is installed on the slider connecting plate. A lifting motor is installed on one side of the bearing seat, and a translation cam is eccentrically installed on the output end of the lifting 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 installed on the frame, a tail clamp connecting plate is slidably installed on the rear tail motor seat, a rear tail motor eccentrically connected to the rear tail cam is installed 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 installed on the tail clamp connecting plate, two rear tail fixing seats and a rear tail movable block are slidably installed on the tail clamp fixing plate, and a "C"-shaped clamping plate is commonly connected above the two rear tail fixing seats, and a rear tail clamp for clamping the welding strip is formed above the "C"-shaped clamping plate, the rear tail movable block is located between the two rear tail fixing seats, the rear tail movable block extends upward to form a tail clamping plate, and a secondary clamping plate that cooperates with the rear tail clamp to clamp the welding strip is formed above the tail clamping plate, and 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 part is arranged on one side of the welding part of the frame, and two guide rods are arranged on one side of the support frame; the detection part comprises a string cutting slide plate 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 with the string cutting slide plate, one end of the string cutting screw rod is connected with a string cutting motor, the guide rod passes through the string cutting slide plate, a string cutting cylinder and a cutter fixing seat are mounted on the string cutting slide plate, a cylinder slide seat 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 seat, and cutters are respectively mounted above the cutter fixing seat and on the lower side above the cylinder slide seat;

[0024] The detection part 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 string cutting slide. An "L"-shaped rotating seat is slidably installed on the profile. A crossbeam is rotatably installed between the two rotating seats. A turning cylinder for driving the crossbeam to turn is installed on one side of one of the rotating seats. A plurality of 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 tray and two unloading cross braces installed on the frame. The two unloading cross braces are located above the unloading tray 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 for driving the flip beam to rotate is installed on one side of an extraction bearing seat.

[0026] The reflux part includes a screen pressing frame installed on a frame, an upper plate and a push-pull cylinder driving the upper plate to move linearly are slidably installed on the screen pressing frame, a screen taking cylinder is installed on the upper plate, a lower plate is installed on the output end of the screen taking cylinder, a plurality of electromagnets are installed on the lower plate, and 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-sheet 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, picks up the battery cell from the sheet placement table, and places the battery cell and the press in the assembly part under the drive of the loading module; under the drive of the loading module, the single-sheet mechanism picks up the battery cell from the sheet material mechanism and places it 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 strip on the battery cell, the battery cell is first lifted from the guide plate to prevent the battery cell from excessively contacting other structures, and then the traction mechanism pulls the solder strip. During the traction process, the solder strip moves in the slide groove and the auxiliary groove, and the slide groove and the auxiliary groove are used to prevent the solder strip from swinging during the traction process, so that the error between the solder strip and the silver paste point on the battery cell is within an effective and controllable range, thereby further improving the accuracy of the solder strip 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 rear clamping mechanism cooperate with each other to clamp and position the solder strip to prevent the solder strip from shifting on the battery cell, and then the pressing net is placed to firmly press the solder strip on the battery cell.

[0029] In the process of sending the battery cell and the pressing net into the welding part, the battery cell and the pressing net are lifted by the transfer mechanism, so that during the transfer process, the battery cell and the pressing net will not contact any other structure, thereby avoiding secondary contact and reducing the docking error between the welding ribbon and the silver paste point on the battery cell. By lifting the battery cell and the pressing net during transportation and using the pressing net to press the welding ribbon and battery cell, the welding accuracy is effectively improved, and the operation of manually adjusting the position of the welding ribbon is reduced, thereby improving the efficiency of welding the welding ribbon and battery cell. 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 It is a three-dimensional diagram of the position distribution of the soaking part, cutting part, combination part and reflux part of the present invention;

[0032] Figure 3 It is a three-dimensional diagram of the position distribution of the feeding mechanism, cutting mechanism, front and rear 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 It is an exploded view of the front and rear clamp mechanism of the present invention;

[0035] Figure 6 It is 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] Fig. 9 It is a partial three-dimensional diagram of the welding platform of the present invention;

[0039] Fig.10 It is a three-dimensional diagram of the position distribution of the transfer mechanism and the welding platform of the present invention;

[0040] Fig.11 It is a three-dimensional diagram of the traction mechanism of the present invention;

[0041] Fig.12 It is a three-dimensional diagram of the rear tail clip structure of the present invention;

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

[0043] Fig.14 It is a three-dimensional diagram of the detection part of the present invention;

[0044] Fig.15 It is a three-dimensional diagram of the blanking part of the present invention;

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

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

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

[0048] Fig.19 It 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 part; 31. Soaking box; 32. Guide plate; 33. Pressing roller;

[0051] 4. Cutting part; 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. Combination part; 51. Front and tail clamp mechanism; 511. Front and tail motor seat; 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 rod; 528. Output synchronous wheel; 529. Sheet net connecting plate; 5210. Transport screw rod; 5211. Sheet feeding seat; 53. Traction mechanism; 531. Clamping claw stand; 532. Vertical clamping module; 533. Lifting cylinder; 534. Vertical clamping slider seat; 535. Clamping box; 536. Clamping claw 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 sliding block; 627. Translation plate; 628. Support bar; 629. Tail motor seat; 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. Stringing slide; 72. Stringing screw rod; 73. Screw rod seat; 74. Stringing cylinder; 75. Cylinder slide seat; 76. Cutter fixing seat; 77. Profile; 78. Flat belt; 79. Lifting cylinder; 710. Rotating seat; 711. Flipping cylinder; 712. Crossbeam;

[0055] 8. Unloading part; 81. Crossbeam connecting plate; 82. Retrieving motor; 83. Driven pulley; 84. Unloading cylinder; 85. Side slide bar; 86. Lower beam; 87. Unloading turning cylinder; 88. Turning 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 sheet mechanism; 15. Reflux synchronous belt; 16. Sheet material mechanism; 161. Lifting bottom plate; 162. Slider module; 163. Translation screw rod; 164. Material box bottom plate; 17. Sheet placement table; 18. Screen pressing. DETAILED DESCRIPTION

[0058] 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. 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 creative work are within the scope of protection of the present invention.

[0059] Example: Figure 1 - Fig.19 As shown, the present invention provides a technical solution, a solar cell string welding device, comprising a frame 1, a reeling part 2, the reeling part 2 is arranged at one end of the frame 1, the welding ribbon flows out from the reeling part 2, and also comprises a soaking part 3, a cutting part 4, a combination part 5, a welding part 6, a feeding part 8, a reflow part 9 and a feeding part 10 installed in the frame 1;

[0060] The cutting section 4 quantitatively cuts the solder strip soaked in the soaking section 3;

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

[0062] The reflux section 9 sends the pressing net 18 pressed on the battery cell and the solder strip back to the loading section 10;

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

[0064] 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 solder strip;

[0065] 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 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 plate 45 slidably mounted on a base 41, a push cylinder 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, a cylinder mounting plate is mounted on the bottom plate 46 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;

[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 part 4 includes a guide plate 44 with a slide groove for limiting the shaking of the welding strip on the end surface;

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

[0073] The transfer mechanism 52 includes two plate holders 521 installed on the frame 1, a feed fixing plate 526 installed between the two plate holders 521, and a lifting structure for driving the feed fixing plate 526 to rise and fall. The two plate holders 521 are connected by a guide plate 522 installed on the top, and a plurality of through slots are arranged on the guide plate 522. 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, and 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 claw stand 531 installed on a vertical clamping module 532, the vertical clamping module 532 is installed on the frame 1, a vertical clamping slider seat 534 is slidably installed on the clamping claw stand 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 a plurality of clamping claw cylinders 536 are installed on one side of the clamping box 535.

[0075] The front clamp cylinder 517 is installed on the sliding block 513, and the output end of the front clamp cylinder 517 is connected to the connecting plate 515 slidably installed on the sliding block 513. The front support 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 support plate 519. A plurality of top blocks 516 for controlling the opening and closing of the front tail clamp 518 are arranged on the connecting plate 515, and 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 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 sheet net through a nut seat. Connecting plate 529, the sheet net connecting plate 529 is composed of a "C"-shaped carrier plate connected to a nut seat, a plurality of sheet net supporting plates installed on the carrier plate, and two feeding bars, the feeding bars are located on the outside of the plurality of sheet net supporting plates, the screw motor connected to 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 a nut seat; the sheet feeding seat 5211 is composed of a conveying fixing seat connected to a 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 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.

[0078] 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;

[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 for driving the infrared welding machine 61 to move up and down is mounted on the welding bracket 64;

[0080] The welding platform 62 includes a support frame 621, and a rear tail clamp structure is installed on the side of the support frame 621 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 support structure is installed on the lower inner side of the support frame 621. The support 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 below the translation plate 627, and a slider connecting plate 623 is slidably connected below 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 seat 629 mounted on the frame 1, a tail clamp connecting plate 6210 is slidably mounted on the rear tail motor seat 629, a rear tail motor eccentrically connected to a rear tail cam is mounted on one side of the rear tail motor seat 629, the rear tail cam is located in a 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 for cooperating with the rear tail clamp 6215 to clamp the welding strip is formed above the tail clamping plate. Bearings are provided on the sides 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 respectively in contact with the two bearings.

[0082] The frame 1 is provided with a detection part 7 on one side of the welding part 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 screw rod 72 is rotatably mounted on the screw 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 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 cutters are respectively installed above the cutter fixing seat 76 and above the lower side of the cylinder slide 75, and the cutter is used to cut the welding strip so that the battery string reaches a certain production specification length;

[0084] The detection unit 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 stringing 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. A number of 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 table is also provided between the flat belt 78 and the cutter fixing seat 76 , and the transfer table is used to temporarily hold the battery sheet welded with the welding strip. The height of the transfer table is consistent with the height of the flat belt 78 and is higher than the cutter fixing seat 76 .

[0086] The unloading part 8 is located at one side of the detection part 7. The unloading part 8 includes an unloading tray 89 and two unloading cross braces installed on the frame 1. The two unloading cross braces are located above the unloading tray 89 and the flat belt 78. A cross beam connecting plate 81 is slidably installed on the unloading cross brace. Both ends of the cross beam connecting plate 81 are connected to the lower beam 86 through side sliding rods 85. A unloading cylinder 84 connected to the lower beam 86 is installed at the lower middle part of the cross beam connecting plate 81. A feeding motor 82 and a driven pulley 83 are respectively installed at both ends of the two unloading cross braces on the frame 1. A driving pulley is installed at the output end of the feeding motor 82. The driving pulley and the driven pulley 83 are connected by a synchronous belt. The cross beam 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 flip 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 flip beam 88. A unloading flip cylinder 87 for driving the flip beam 88 to rotate is installed on one side of an 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, 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, and one end of the screen pressing frame 91 is located above the support frame 621.

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

[0089] The double material mechanism 13 picks up the pressing net 18 from the reflux synchronous belt 15 and 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 feeding module 12;

[0090] The double-material mechanism 13 comprises a vertical die set 131 mounted on the slide plate of the feeding die set 12, a vertical plate 132 is mounted on the vertical die set 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-absorbing fixed seat 134, an electromagnet is mounted on the iron-absorbing fixed seat 134, and a suction cup for absorbing the battery sheet is arranged in the middle of the suction cup seat 133;

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

[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 includes a slider module 162 mounted on the frame 1 and a profile frame that slides and supports the magazine bottom plate 164. The slider module 162 is located on the inner side of the profile frame. A lifting profile that lifts the lifting bottom plate 161 is installed on the slider module 162. At least three lifting bottom plates 161 are arranged on the magazine bottom plate 164, and multiple battery cells are placed on the lifting bottom plate 161. A translation screw 163 that is threadedly connected to the magazine bottom plate 164 is installed on the profile frame, and the translation screw 163 is connected to the translation motor. Driven by the translation motor, the translation screw 163 drives the magazine bottom plate 164 to make a linear motion on the profile frame, so that the lifting profile can lift up different lifting bottom plates 161.

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

[0095] When it is necessary to weld the battery cell and the welding strip, 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 net connecting plate 529 and the sheet feeding seat 5211 are higher than the guide plate 522. Driven by the loading module 12, the single-sheet mechanism 14 picks up the battery cell from the sheet material mechanism 16 and places it 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-chip mechanism 14 operate again. The single-chip mechanism 14 picks up the battery cell from the cell material mechanism 16, and 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-chip 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 net 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 solder strip, the pressing cylinder 47 pushes the pressing plate 48 downward, so that the pressing rod and the bottom plate 46 cooperate to clamp the solder strip. When the solder strip needs to be pushed, the slide plate 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 solder strip passes through the cutter on the slider fixing seat 410 and the guide rail fixing seat 411, and 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 pressing 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 pressing 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 supporting 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 supporting 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 pressing net 18 is placed on the battery cell, the front and rear clamps 518 and the clamping claw cylinder 536 clamp the solder strip all the time, so that the solder strip is always on the solder joint of the battery cell. After the pressing net 18 is placed on the battery cell by the double material mechanism 13, the clamping claw cylinder 536 and the front and rear clamps 518 release the solder strip. The clamping box 535 is reset under the drive of the lifting cylinder 533 and waits for the next clamping of the solder strip. The front and rear clamps 518 are reset and wait for the next clamping of the solder strip.

[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 fixing plate 526 to descend again, so that the height of the sheet net connecting plate 529 is lower than the guide plate 522, so that the sheet feeding seat 5211 places the battery sheet on the guide plate 522, and then the sheet feeding seat 5211 is reset, and the sheet net connecting plate 529 is driven by the transfer screw 527 to move to the bottom of the battery sheet, and then the lower inclined seat 524 lifts the feed fixing plate 526 again, so that the sheet net connecting plate 529 lifts the battery sheet again and is higher than the guide plate 522, and the sheet feeding seat 5211 is raised again and used to receive the next battery sheet. The traction mechanism 53 works again and cooperates with the front and rear clamping mechanism 51 again to pull and clamp the welding strip, so that the welding strip falls on the battery sheet on the sheet net connecting plate 529 again.

[0099] Before the battery cell is placed on the translation plate 627, the translation cam 625 rotates and pushes the cam sliding block 626 upward, so that the translation plate 627 is higher than the support frame 621, so as to facilitate receiving the battery cell. 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 in height and starts working to weld the welding strip and the battery cell. Whenever the sheet net connecting plate 529 transfers a new battery cell to the welding part 6, the translation cam 625 rotates again and pushes the cam sliding block 626 upward, and 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 discharging 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 battery cell, welding strip and pressing net 18 fall on the support frame 621, the rear tail motor drives the rear tail cam to rotate, so that the tail clamp connecting plate 6210 rises, so that the rear tail clamp 6215 reaches a height that can clamp the welding strip, and then the tail clamp cylinder 6212 moves the clamping wedge block upward, and under the support of the bearing, the rear tail movable block 6213 and the rear tail fixed seat 6214 move relative to each other, so that the rear tail clamp 6215 cooperates with the auxiliary clamp plate to clamp the welding strip, preventing the welding strip from relative displacement with the battery cell during the welding process. Before the translation plate 627 transports the battery cell forward, the tail clamp cylinder 6212 is reset, the rear tail movable block 6213 and the rear tail fixed seat 6214 are reset under the reset of the spring, and the rear tail clamp 6215 releases the welding strip.

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

[0102] When the welded battery cell, welding strip and pressing net 18 are under 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, the removing net cylinder 94 pushes the lower plate 95 downward and cooperates with the electromagnet to remove the pressing net 18 from the battery cell, the removing net cylinder 94 drives the lower plate 95 to reset, 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 removing net cylinder 94 and the electromagnet cooperate with each other, so that the lower plate 95 places the pressing net 18 on the reflow synchronous belt 15, and the reflow synchronous belt 15 transports the pressing net 18 to the direction of the sheet placement table 17, which is convenient for the double material mechanism 13 to pick up.

[0103] After the pressing net 18 is removed, the battery cell with the welding strip is sent to the flat belt 78 by the translation plate 627. Before transportation, the string cutting cylinder 74 pushes the cylinder slide 75 upward to separate the cylinder slide 75 and the cutter on the cutter fixing seat 76, so as to facilitate the translation plate 627 to pass through. The translation plate 627 places the battery cell on the transfer table. As more and more battery cells are placed on the translation plate 627, the previous battery cell is replaced by the next battery cell, and the previous battery cell falls on the flat belt 78. As the translation plate 627 is continuously pushed, the battery cells are 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 so that the suction cup can absorb the battery cells. Then the lifting cylinder 79 pushes the rotating seat 710 upward. After reaching a certain height, the flip cylinder 711 drives the crossbeam 712 to flip 180°, which is convenient 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 cup on the flip beam 88 is close to the battery cell and adsorbs it under negative pressure. The suction cup on the crossbeam 712 releases the negative pressure and releases the positive pressure, so that the suction cup on the flip beam 88 can suck away the battery cell. Then the unloading cylinder 81 drives the flip beam 88 to reset, and the material-retrieving motor 82 rotates in the opposite direction, so that the crossbeam connecting plate 81 is 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 sheet falls on the unloading tray 89. After the battery sheet 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 invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A solar cell string welding device, comprising a frame (1) and a reel (2), wherein the reel (2) is arranged at one end of the frame (1), and a welding ribbon flows out from the reel (2), characterized in that: It also includes a soaking part (3), a cutting part (4), a assembling 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 strip and the battery cell; The reflux 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 strip; The battery cell, the welding strip 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 strip and the pressing net (18) and then sends them to the welding part (6).

2. A solar cell string welding device according to claim 1, characterized in that: The cutting portion (4) comprises a guide plate (44) with a sliding groove on the end surface for limiting the shaking of the welding strip; The combined part (5) comprises a front and rear clamping mechanism (51), a transfer mechanism (52) and a traction mechanism (53); The front and rear clamp mechanism (51) comprises a casing and a sliding block (513) slidably mounted in the casing, the sliding block (513) being provided with a square groove, a lifting cam (512) being rotatably mounted in the square groove, a front and rear motor eccentrically connected to the lifting cam (512) being provided outside the casing, a front support plate (519) having an auxiliary groove being provided above the sliding block (513), and a front and rear clamp (518) driven by a front clamp cylinder (517) being provided on the sliding block (513); The transfer mechanism (52) comprises 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 via a guide plate (522) mounted on the top, and a plurality of through slots are arranged on the guide plate (522). 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, and both the sheet net connecting plate (529) and the sheet feeding seat (5211) can pass through the through slots. The traction mechanism (53) comprises 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).

3. A solar cell string welding device according to claim 2, characterized in that: The front clamp cylinder (517) is installed on the sliding block (513), and the output end of the front clamp cylinder (517) is connected to a 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). A plurality of top blocks (516) for controlling the opening and closing of the front tail clamp (518) are arranged on the connecting plate (515), and the top blocks (516) are located on one side of the front tail clamp (518).

4. A solar cell string welding device according to claim 2, characterized in that: 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. A driven synchronous wheel connected to the feed screw (527) is installed at one end of the transfer screw (527) through a synchronous belt. The transfer screw (527) is connected to the sheet net connecting plate (529) through a nut seat. The screw motor connected to 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 comprises 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 fixing plate (526); a slider seat (525) connected to the feed fixing 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.

5. A solar cell string welding device according to claim 2, 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 a guide wheel inside the soaking box (31).

6. A solar cell string welding device according to claim 2, characterized in that: The cutting section (4) further comprises a base (41) mounted on the frame (1), and 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 comprises 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, a cylinder mounting plate is mounted on the bottom plate (46) 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) is connected below the slider fixing seat (410); the cutting cylinder (49) is mounted on the frame (1); and cutters that cooperate with each other to cut the welding strip are 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).

7. A solar cell string welding device according to claim 2, characterized in that: The welding part (6) comprises 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) comprises a support frame (621), and a rear tail clamp structure is installed on the side of the support frame (621) 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, and one end of the support bar (628) is installed on the support frame (621). A support structure is installed on the lower inner side of the support frame (621), and the support structure comprises a translation plate (627) located below the support bar (628). Three discharge plates are installed on the translation plate (627), and 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, and the translation plate (627) is connected to the lower inner side. There are a plurality of guide rods (624), and a slider connecting plate (623) is slidably connected to the lower part 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) via 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).

8. A solar cell string welding device according to claim 7, characterized in that: The rear tail clamp structure comprises a rear tail motor seat (629) mounted on the frame (1), a tail clamp connecting plate (6210) being slidably mounted on the rear tail motor seat (629), a rear tail motor eccentrically connected to a rear tail cam being mounted on one side of the rear tail motor seat (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 (6214) are connected together with a "C"-shaped clamping plate above, 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 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, 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 respectively in contact with two bearings.

9. A solar cell string welding device according to claim 7, 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) comprises a string cutting slide plate (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 plate (71); one end of the string cutting screw rod (72) is connected to a string cutting motor; the guide rod (63) passes through the string cutting slide plate (71); a string cutting cylinder (74) and a cutter fixing seat (76) are mounted on the string cutting slide plate (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 a lower end of the cylinder slide seat (75); cutters are respectively mounted above the cutter fixing seat (76) and above and below the cylinder slide seat (75); The detection unit (7) further comprises a profile (77), a flat belt (78) and a lifting cylinder (79) mounted on the frame (1); the flat belt (78) is located on one side of the string cutting slide plate (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 turning cylinder (711) for driving the crossbeam (712) to turn over 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 unloading part (8) is located on one side of the detection part (7). The unloading part (8) comprises an unloading tray (89) and two unloading cross braces mounted on the frame (1). The two unloading cross braces are located above the unloading tray (89) and the flat belt (78). A cross beam connecting plate (81) is slidably mounted on the unloading cross brace. Both ends of the cross beam connecting plate (81) are connected to a lower beam (86) through a side sliding rod (85). A unloading cylinder (84) connected to the lower beam (86) is mounted below the middle of the cross beam connecting plate (81). The frame (1) is provided with a take-up cylinder at both ends of the two unloading cross braces. A feeding motor (82) and a driven pulley (83), a driving pulley is installed at the output end of the feeding motor (82), 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 the two 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.

10. A solar cell string welding device according to claim 7, characterized in that: The reflux section (9) comprises 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 at the output end of the screen taking cylinder (94); a plurality of electromagnets are mounted on the lower plate (95); and one end of the screen pressing frame (91) is located above a support frame (621); The feeding part (10) comprises a bracket (11) mounted on the frame (1), a reflow synchronous belt (15), a sheet material mechanism (16) and a sheet placement table (17); the bracket (11) is mounted with a feeding module (12); the feeding module (12) is mounted with a double-material mechanism (13) and a single-sheet mechanism (14); one end of the reflow synchronous belt (15) is located below the screen pressing frame (91); the sheet placement table (17) is located on the inner side of 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 reflux 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 cells from the sheet material mechanism (16) and places them on the cell placement table (17).

Images