A photovoltaic module welding apparatus

Abstract

The application discloses a kind of photovoltaic module welding equipment, it is related to welding equipment technical field, including workbench, workbench is provided with solder strip leveling conveying mechanism, it includes the feeding groove plate with recess and the movable frame being arranged above it, movable frame is driven lifting by cylinder two, and inside is equipped with by drive motor one drive, outer wall with heating wire's roller, for the solder strip in recess is heated, leveled and conveyed;Drive motor three, transfer roller, feeding sleeve, feeding roller and storage box are cooperated with each other by being set, i.e. can let feeding sleeve absorb flux, by being set vertical board, servo motor two, movable rod, I-shaped sliding block two, sliding frame, connecting sliding block, I-shaped sliding block one, transmission rod, sliding plate, limit sliding block, limit sliding block, support sliding hole, feeding groove plate, screw rod and knob are cooperated with each other, i.e. can be coated with flux the bottom surface of solder strip being conveyed, prevent solder strip displacement, improve welding effect.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, specifically to a photovoltaic module welding equipment. Background Technology

[0002] Photovoltaic module welding is the process of connecting individual solar cells in series or parallel using metal wires (interconnecting strips and busbars) to form a battery string capable of generating higher voltage and current. Individual cells produce very little current and voltage. Through series welding, the voltage can be accumulated to form a practically valuable power output. It also firmly connects fragile cells together with solder ribbons, forming a stable circuit structure that facilitates subsequent lamination and other processes. The photovoltaic panel and solder ribbons are the core materials. The front of the photovoltaic panel has very fine silver main grid lines and even finer sub-grid lines for collecting current, while the back is usually coated with silver or aluminum. The entire back or a portion of it can serve as electrodes. The solder ribbons are usually pure copper because of its good conductivity, and other metals may also be plated on them. Photovoltaic module welding is a precision manufacturing process with extremely high accuracy requirements and a significant impact on the quality of the final product. As photovoltaic technology develops towards higher efficiency and lower cost, welding processes are constantly being innovated.

[0003] Extensive research revealed problems with existing photovoltaic module welding techniques. In these techniques, the photovoltaic panel is placed under a welding head, and a gripper conveyor places the welding ribbon on the top surface of the panel. The welding head then moves downwards to weld the panel and ribbon. Due to the welding head's surface area, its rapid downward movement displaces air below. The ribbon, being very light and flat, has minimal friction with the panel surface. This downward airflow is sufficient to cause it to shift or bounce. This misalignment prevents the ribbon from accurately covering the delicate main grid lines of the solar cells, resulting in unusable welded panels and poor welding quality. Therefore, based on the aforementioned research and existing technologies, a photovoltaic module welding device is proposed to address these problems. Summary of the Invention

[0004] The purpose of this invention is to provide a photovoltaic module welding device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A photovoltaic module welding device includes a workbench, on which are arranged:

[0007] The welding strip leveling and conveying mechanism includes a feeding trough plate with grooves and a movable frame above it. The movable frame is driven to lift by a second cylinder and has a rolling wheel inside that is driven by a first drive motor and has heating wires on its outer wall. This wheel is used to heat, level and convey the welding strip in the groove.

[0008] The flux coating mechanism includes a storage box and a transfer roller driven by a drive motor. The transfer roller is vertically and vertically mounted via a support slider inside a support plate and has a feeding sleeve on its outer wall. The transfer roller is connected to a swing mechanism driven by a servo motor, which causes it to periodically rise and fall, so as to intermittently apply flux to the bottom surface of the solder strip through the arc groove at the bottom of the feeding trough plate.

[0009] A welding strip transfer and flipping mechanism includes a slide table that is driven to move laterally by a servo motor and a ball screw. The slide table is equipped with a flip-able gripper cylinder driven by a drive motor for gripping and flipping welding strips coated with flux.

[0010] The component conveying and welding mechanism includes a flat chain and a T-shaped platform for supporting photovoltaic modules, and a welding head that is lifted and lowered by a cylinder.

[0011] The flux applied intermittently by the flux coating mechanism can provide adhesive force to temporarily position the solder ribbon when it is placed on the photovoltaic module by the solder ribbon transfer and flipping mechanism, so as to prevent the solder ribbon from shifting during subsequent welding.

[0012] Furthermore, sliding blocks are fixedly installed on both the front and rear side walls of the movable frame, and two slide rails are fixedly installed on the top surface of the worktable corresponding to the sliding blocks. The sliding blocks are slidably connected to the slide rails. The rolling wheel is fixedly sleeved on the outer circular wall of the support roller. The support roller is rotatably connected to the inside of the movable frame. The front end of the support roller passes through the movable frame and is fixedly installed with a transmission wheel one. The drive motor one is installed on one side of the movable frame, and its drive shaft passes through the movable frame and is fixedly installed with a transmission wheel two. The transmission wheel two and all the transmission wheels one are alternately connected by a transmission belt.

[0013] Furthermore, the swing mechanism includes a vertical plate fixedly installed on the top surface of the worktable, a movable rod rotatably connected to the rear side of the vertical plate, a servo motor II installed on the front side of the vertical plate, and its drive shaft passing through the vertical plate and fixedly connected to one side of the movable rod; an I-shaped slider II is rotatably connected to the lower end of the movable rod, the top and bottom surfaces of the I-shaped slider II are provided with rectangular grooves, and it is slidably connected to the inside of a sliding frame; a partition block is fixedly installed inside the sliding frame, one side of which is rotatably connected to one end of a transmission rod, and the other end of the transmission rod is rotatably connected to a sliding plate fixed on the front support slider.

[0014] Furthermore, a limiting slider is fixedly installed on one side of the sliding plate, and a limiting rail is fixedly installed on one side of the support plate located in front. The limiting slider is slidably connected to the limiting rail. A connecting slide is also fixedly installed on the top surface of the worktable. A lead screw is rotatably connected inside the connecting slide. A connecting slider is threaded onto the outer circular wall of the lead screw. An I-shaped slider is rotatably connected to one side of the connecting slider. The I-shaped slider is also slidably connected inside the sliding frame and located between the partition block and the second I-shaped slider. A knob is fixedly installed at the right end of the lead screw, which passes through one side of the connecting slide.

[0015] Furthermore, there are several gripper cylinders arranged side by side between two connecting plates, and adjacent gripper cylinders are connected by connecting rods; two synchronous pulleys are rotatably connected to one side of the connecting plate located in front, and a synchronous belt is rotatably connected between the two synchronous pulleys; one end of the connecting rod located in front passes through the connecting plate located in front and is fixedly connected to one side of the synchronous pulley located above; the drive motor is installed on the rear side of the connecting plate located in front, and its drive shaft passes through the connecting plate and is fixedly connected to the side of the synchronous pulley located below.

[0016] Furthermore, the component conveying and welding mechanism also includes two support partitions fixedly installed on the top surface of the workbench, two connecting rollers rotatably connected between the two support partitions, sprockets fixedly sleeved on the outer circular wall of the connecting rollers, and a flat chain rotatably connected between every two corresponding sprockets; the drive motor is installed on the front side of the support partition located in front, and its drive shaft passes through the support partition and is fixedly connected to the front end of the connecting roller on the right side; there are several T-shaped platforms, fixed on the top surface of the workbench, and alternately arranged with multiple sets of sprockets and flat chains.

[0017] Furthermore, a rolling sleeve made of flexible material is fixedly fitted onto the outer circular wall of the rolling wheel, and the width of the rolling wheel is smaller than the width of the groove on the feeding trough plate.

[0018] Furthermore, a cover plate is installed on the top surface of the storage box, and a feeding roller is rotatably connected inside the cover plate. The outer circular wall surface of the feeding roller is in contact with the outer circular wall surface of the transfer roller.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] By cooperating with the drive motor, transfer roller, feeding sleeve, feeding roller and storage box, the feeding sleeve can absorb flux.

[0021] By coordinating the vertical plate, servo motor II, movable rod, I-beam slider II, sliding frame, connecting slider, I-beam slider I, transmission rod, sliding plate, limit slider, limit slider, support sliding hole, feeding trough plate, lead screw, and knob, the transfer roller and feeding sleeve can periodically rise and fall, applying flux to the bottom surface of the conveying welding strip. Adjusting the lead screw via the knob changes the fulcrum position, flexibly adjusting the coating frequency to accommodate welding strips of different lengths and precisely controlling the flux application amount. The flux positions the welding strip on the photovoltaic panel, preventing displacement due to airflow during welding. Compared to existing technologies, this solution utilizes the viscosity of the flux for temporary fixation. The residual heat of the welding strip accelerates flux viscosity, generating sufficient adhesion the moment the welding strip is placed on the photovoltaic panel. This reduces costs while ensuring high precision and improving welding results. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the installation structure of the movable frame and slide rail of the present invention;

[0024] Figure 3 This is a schematic diagram of the connection structure between the feeding roller and the transfer roller of the present invention;

[0025] Figure 4 for Figure 3 A magnified schematic diagram of a portion of the structure of A in the diagram;

[0026] Figure 5 This is a schematic diagram of the connection structure between the supporting sliding hole and the supporting slider of the present invention;

[0027] Figure 6 This is a schematic diagram of the connection structure between the rolling wheel and the heating wire of the present invention;

[0028] Figure 7 This is a schematic diagram of the connection structure between the slide and the I-beam of the present invention;

[0029] Figure 8 This is a schematic diagram showing the positions of the T-shaped platform and the flat chain of the present invention;

[0030] Figure 9 This is a bottom view schematic diagram of the connection structure between the feeding trough plate and the arc-shaped groove of the present invention.

[0031] In the diagram: 1. Workbench; 2. Support base box; 3. Feeding trough plate; 4. Support frame; 5. Welding head; 6. Cylinder 1; 7. Movable frame; 8. Support roller; 9. Rolling roller; 10. Cylinder 2; 11. Slide rail; 12. Sliding block; 13. Transmission wheel 1; 14. Transmission belt; 15. Drive motor 1; 16. Transmission wheel 2; 17. Arc groove; 18. Support plate; 19. Vertical plate; 20. Storage box; 21. Cover plate; 22. Feeding roller; 23. Transfer roller; 24. Feeding sleeve; 25. Drive motor 3; 26. Sliding plate; 27. Limiting rail; 28. Limiting slider; 29. ​​Transmission rod; 30. Connecting hopper; 31. 31. Movable rod; 32. Lead screw; 33. Connecting slider; 34. Knob; 35. Sliding frame; 36. I-beam slider one; 37. Spacer; 38. I-beam slider two; 39. Supporting sliding hole; 40. Supporting slider; 41. Heating wire; 42. Rolling soft sleeve; 43. Ball screw; 44. Slide table; 45. Connecting plate; 46. Synchronous pulley; 47. Synchronous belt; 48. Drive motor four; 49. Connecting rod; 50. Gripper cylinder; 51. Servo motor one; 52. I-beam rod; 53. T-shaped table; 54. Supporting partition; 55. Connecting roller; 56. Sprocket; 57. Flat chain; 58. Drive motor five; 59. Servo motor two. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figures 1-6 , Figure 9 A photovoltaic module welding equipment includes a workbench 1, on the bottom surface of the workbench 1, a support base box 2 is fixedly installed by bolts, and a control box is installed inside the support base box 2 for centralized control of various actuators such as motors and cylinders on the equipment.

[0034] The welding strip leveling and conveying mechanism is used to level, heat, and convey the cut welding strip to the next work station. A feeding trough plate 3 is bolted to the top surface of the support base box 2. Several grooves for accommodating and guiding the welding strip are machined along the length of the top surface of the feeding trough plate 3. A movable frame 7 is positioned directly above the feeding trough plate 3. Several support rollers 8 are rotatably connected to the inside of the movable frame 7 via bearings. Several rolling rollers 9 are fixedly fitted onto the outer circular wall of each support roller 8. The number of rolling rollers 9 corresponds to the number of grooves on the feeding trough plate 3. The number of rollers is corresponding (e.g., five each), and the width of the roller 9 is slightly smaller than the width of the groove, ensuring that the roller 9 can partially extend into the groove to contact the welding strip without interfering with the groove wall. Each roller 9 has several heating wires 41 embedded in its outer circular wall, and a layer of heat-resistant flexible material roller sleeve 42 is fixedly fitted onto its exterior to protect the welding strip surface and increase friction. Two cylinders 10 are fixedly installed on the top surface of the worktable 1, with the telescopic shafts of the cylinders 10 pointing vertically upwards and their top ends fixedly connected to the bottom surface of the movable frame 7. To ensure smooth lifting and lowering of the movable frame 7, two slide rails 11 are also fixedly installed on the top surface of the worktable 1, and sliding blocks 12 that slide in cooperation with the slide rails 11 are correspondingly fixedly installed on the front and rear side walls of the movable frame 7.

[0035] The drive unit is located at the front of the movable frame 7. Each support roller 8 has its front end passing through the front side plate of the movable frame 7 and is fixedly mounted with a drive wheel 13. A second drive wheel 16 is also rotatably connected to the front of the movable frame 7 via a bearing. A drive motor 15 is installed inside the movable frame 7 on one side. One end of the drive shaft of the drive motor 15 passes through the side wall of the movable frame 7 and is fixedly connected to the side of the second drive wheel 16. The second drive wheel 16 and all the first drive wheels 13 are alternately connected via multiple drive belts 14, meaning one drive belt 14 passes around the second drive wheel 16 and one drive wheel 13, and adjacent first drive wheels 13 are also connected via drive belts 14. When the drive motor 15 starts, it can synchronously drive all the support rollers 8 and the rolling rollers 9 to rotate in the same direction.

[0036] In the above-mentioned technical features, the operator places the pre-cut welding strips one by one into the groove of the feeding trough plate 3, starts the cylinder 10, and extends its telescopic shaft downward, driving the movable frame 7 to descend smoothly along the slide rail 11. This causes the rolling wheel 9 and its outer rolling sleeve 42 to press into the groove and contact the surface of the welding strip. Then, the drive motor 15 is started, and through the linkage of the transmission wheel 16, the transmission belt 14 and the transmission wheel 13, all the support rollers 8 are driven to rotate synchronously. The rolling wheel 9 rotates accordingly, and the welding strip is conveyed to the right at a uniform speed by the friction between the rolling sleeve 42 and the welding strip. During this process, the heating wire 41 is energized and heats up, which moderately heats and softens the welding strip. Combined with the flexible extrusion of the rolling sleeve 42, the welding strip is continuously leveled and straightened.

[0037] As a preferred embodiment of this example, please refer to [link / reference]. Figures 1-6 The flux coating mechanism is used to intermittently and quantitatively apply flux to the bottom surface of the leveled solder strip. A storage box 20 is fixedly installed on the top surface of the workbench 1. The storage box 20 is used to store liquid flux, and a feed pipe with a valve is installed on one side for replenishing flux. A cover plate 21 is bolted to the top surface of the storage box 20. The inside of the cover plate 21 is rotatably connected to a feeding roller 22 via a rotating shaft. The lower half of the feeding roller 22 is immersed in flux.

[0038] On the top surface of the workbench 1, on the right side of the feeding trough plate 3, two vertical support plates 18 are fixedly installed. Each support plate 18 has a support sliding hole 39 with a cross-section in the middle. A support slider 40 is slidably connected in each of the two support sliding holes 39. A transfer roller 23 is rotatably connected between the two support sliders 40 through a bearing. Several feeding sleeves 24 (such as sponge sleeves) for absorbing flux are fixedly sleeved on the outer circular wall of the transfer roller 23. The installation position of the transfer roller 23 ensures that its outer circular wall is in contact with the outer circular wall of the feeding roller 22. A drive motor 25 is installed on the front side of the support slider 40 at the rear. The front end of the drive shaft of the drive motor 25 is fixedly connected to the rear end of the transfer roller 23 through a coupling, thereby driving the transfer roller 23 to rotate. The bottom surface of the feeding trough plate 3 is directly opposite the position of the welding strip conveying path and has an arc-shaped groove 17 that communicates with the groove above.

[0039] To achieve the periodic lifting and lowering of the transfer roller 23, a corresponding swing mechanism is provided. A vertical sliding plate 26 is fixedly installed on one side of the front support slider 40. The driving source of this mechanism is a servo motor 59, which is fixedly installed on the front side of a vertical plate 19, which is fixed to the top surface of the worktable 1. The drive shaft of the servo motor 59 passes through the vertical plate 19 and is fixedly connected to one end of a movable rod 31 located on the rear side of the vertical plate 19, allowing the movable rod 31 to rotate around its connection point with the vertical plate 19. The lower end of the movable rod 31 is rotatably connected to an I-shaped slider 38 via a rotating shaft. The top and bottom surfaces of the I-shaped slider 38 are both provided with rectangular grooves.

[0040] Meanwhile, a transmission rod 29 is rotatably connected to one side of the sliding plate 26 via a rotating shaft. The other end of the transmission rod 29 is fixedly connected to a sliding frame 35. The second I-shaped slider 38 is embedded in this sliding frame 35 and can slide up and down along it. In order to adjust the swing characteristics, a connecting slide 30 is also fixed on the top surface of the worktable 1. A lead screw 32 is rotatably connected to the inside of the connecting slide 30 via a bearing. The right end of the lead screw 32 extends out of the connecting slide 30 and is fixedly installed with a knob 34. A trapezoidal connecting slider 33 is threaded onto the lead screw 32 to prevent it from falling off. One side of the connecting slider 33 is rotatably connected to an I-shaped slider 36 via a rotating shaft. The first I-shaped slider 36 is also embedded in the sliding frame 35 and can slide along it. A partition 37 is fixed inside the sliding frame 35 to separate the first I-shaped slider 36 and the second I-shaped slider 38.

[0041] In addition, in order to restrict the sliding plate 26 to only make vertical movements, a limit rail 27 is fixedly installed on one side of the support plate 18 located in front, and a limit slider 28 is fixedly installed on one side of the sliding plate 26, with the limit slider 28 slidably connected to the limit rail 27.

[0042] Specifically, the operator starts the drive motor 25. The drive shaft of the drive motor 25 rotates, which drives the transfer roller 23 and the feeding sleeve 24 to rotate. The rotation of the transfer roller 23 will drive the feeding roller 22 to rotate. The rotation of the feeding roller 22 will cause the flux inside the storage box 20 to be absorbed by the feeding sleeve 24.

[0043] During this process, the second servo motor 59 on the vertical plate 19 is started. The drive shaft of the second servo motor 59 rotates, causing the movable rod 31 to rotate. The rotation of the movable rod 31 causes the second I-shaped slider 38 to move along the sliding frame 35. The movement of the second I-shaped slider 38 along the sliding frame 35 causes the sliding frame 35 to rotate around the first I-shaped slider 36 on the connecting slider 33. At the same time, the sliding frame 35 also slides along the first I-shaped slider 36, which causes the sliding frame 35 to swing up and down continuously. The up and down swing of the sliding frame 35 will cause the transmission rod 29 to swing up and down. The up and down swing of the transmission rod 29 will cause the sliding plate 26 to move up and down. The up and down movement of the sliding plate 26 will cause the limiting slider 28 to slide along the limiting rail 27. The limiting rail 27 and the limiting slider 28 can restrict the movement of the sliding plate 26.

[0044] When the sliding plate 26 moves upward, the sliding plate 26 drives the support slider 40 to move upward inside the support sliding hole 39 on the support plate 18, which at the same time causes the transfer roller 23 and the feeding sleeve 24 to move upward. The feeding sleeve 24 moves upward and enters the arc groove 17 on the feeding trough plate 3, which causes multiple feeding sleeves 24 to contact the welding strip being transported inside the feeding trough plate 3, thereby applying flux to the bottom surface of the welding strip.

[0045] When the sliding plate 26 moves downward, the feeding sleeve 24 on the transfer roller 23 separates from the bottom surface of the welding strip, thereby intermittently applying flux to the bottom surface of the welding strip;

[0046] In addition, the solder strip will have residual heat from the heating wire 41, which reduces the moisture in the flux on the bottom of the solder strip and increases its viscosity.

[0047] The operator rotates knob 34, causing lead screw 32 to rotate. The rotation of lead screw 32 causes connecting slider 33 to move to the left. After connecting slider 33 moves to the left, the pivot point of sliding frame 35 moves forward, i.e., I-shaped slider 36 moves. This reduces the rotation radius of sliding frame 35 and increases the frequency of up-and-down swing of sliding frame 35. This shortens the interval between contact between transfer roller 23 and feeding sleeve 24 and welding strip. The operator adjusts the amount of flux applied to the bottom surface of welding strip by transfer roller 23 and feeding sleeve 24 according to the length of welding strip. The flux facilitates the positioning of welding strip in the subsequent process and prevents the position of welding strip from being affected by airflow during the subsequent welding process. This maintains high welding efficiency while positioning the welding strip.

[0048] As a preferred embodiment of this example, please refer to [link / reference]. Figure 1 , Figure 7 and Figure 8 The welding strip transfer and flipping mechanism is used to clamp the welding strip coated with flux from the end of the feeding trough plate 3, flip it 180 degrees and place it precisely on the photovoltaic module. A portal support frame 4 is fixedly installed on the top surface of the workbench 1. A ball screw 43 is rotatably connected inside the support frame 4 through a bearing seat. A servo motor 51 is installed on the left side of the support frame 4. The drive shaft of the servo motor 51 passes through the side wall of the support frame 4 and is fixedly connected to the left end of the ball screw 43 through a coupling. A slide table 44 is threaded on the ball screw 43. For guidance, two I-beams 52 parallel to the ball screw 43 are also fixedly installed inside the support frame 4. The slide table 44 is slidably connected to the two I-beams 52.

[0049] Two vertical connecting plates 45 are fixedly installed on the top surface of the slide table 44. A row of gripper cylinders 50 for gripping welding strips is arranged between the two connecting plates 45. All gripper cylinders 50 are connected into a whole by two connecting rods 49 to ensure synchronous operation. Two synchronous pulleys 46 are rotatably connected to one side of the front connecting plate 45 through bearings. A synchronous belt 47 is sleeved between the two synchronous pulleys 46. One end of the front connecting rod 49 passes through the front connecting plate 45 and is fixedly connected to the side of the upper synchronous pulley 46. A drive motor 48 is installed on the rear side of the front connecting plate 45. The drive shaft of the drive motor 48 passes through the connecting plate 45 and is fixedly connected to the side of the lower synchronous pulley 46. When the drive motor 48 rotates, the entire gripper cylinder 50 assembly can be rotated 180 degrees around the axis of the connecting rod 49 through the transmission of the synchronous pulleys 46 and the synchronous belt 47.

[0050] The component conveying and welding mechanism is used to carry and convey photovoltaic modules and complete welding. Two support partitions 54 are fixedly installed on the top surface of the workbench 1. Two connecting rollers 55 are rotatably connected between the two support partitions 54 through bearings. Two sprockets 56 (a total of four, forming three sets of transmission pairs) are fixedly sleeved on the outer circular wall of each connecting roller 55. A flat chain 57 is sleeved between the two corresponding sprockets 56 in each set to support the photovoltaic modules. A drive motor 58 is installed on the front side of the support partition 54. The drive shaft of the drive motor 58 passes through the support partition 54 and is fixedly connected to the front end of the connecting roller 55 on the right side to drive the intermittent movement of the conveyor line. Between the flat chains 57, several T-shaped platforms 53 are also fixedly installed on the top surface of the workbench 1. The top surface of the T-shaped platforms 53 is flush with the top surface of the flat chains 57 to jointly support the photovoltaic modules. The welding head 5 is set above the top surface of the workbench 1 through a bracket and is driven up and down by two cylinders 6 fixed on the workbench 1 to perform welding operations.

[0051] Specifically, the external robotic arm places the photovoltaic panel on the support surface composed of the T-shaped table 53 and the flat chain 57. The servo motor 51 is started, driving the ball screw 43 to rotate, which in turn moves the slide table 44 and the gripper cylinder 50 to the right end of the loading trough plate 3. The gripper cylinder 50 then actuates, picking up the solder strip coated with flux. Subsequently, the drive motor 48 is started, which, through the synchronous pulley 46 and the synchronous belt 47, causes the gripper cylinder 50 assembly to rotate 180° around the axis of the connecting rod 49, flipping the solder strip so that the flux side is facing down. The servo motor 51 reverses, and the slide table 44 moves to the right, precisely placing the solder strip on the predetermined position on the surface of the photovoltaic panel. At this time, the viscosity of the flux causes the solder strip to temporarily adhere to the photovoltaic panel, preventing displacement.

[0052] Working principle:

[0053] Step 1: Place the cut welding strip into the groove of the feeding trough plate 3. Cylinder 2 10 extends, pushing the movable frame 7 down. Guided by the sliding block 12 and the slide rail 11, the rolling sleeve 42 of the rolling roller 9 presses into the groove to contact the welding strip. Drive motor 15 starts, driving all support rollers 8 and rolling roller 9 to rotate through transmission wheel 2 16, transmission belt 14 and transmission wheel 13, using friction to convey the welding strip to the right. At the same time, heating wire 41 is energized to heat and soften the welding strip, which, together with the pressing sleeve 42, achieves the leveling of the welding strip.

[0054] Step Two: Drive motor 25 starts, driving the transfer roller 23 and its loading sleeve 24 to rotate. The transfer roller 23 drives the loading roller 22 to rotate, evenly adhering the flux in the storage box 20 to the surface of the loading sleeve 24. Simultaneously, servo motor 59 rotates according to the set program, driving the movable rod 31 to swing, which is then converted into the precise up-and-down reciprocating motion of the sliding plate 26 through a crank-slider mechanism consisting of the I-beam slider 38, the sliding frame 35, and the transmission rod 29. The sliding plate 26 drives the transfer roller 23 to rise and fall as a whole through the support slider 40. When the transfer roller 23 rises, the loading sleeve 24 passes through the arc groove 17 and contacts the bottom surface of the conveying solder strip, applying flux to it; when it falls, it separates, achieving intermittent coating. By rotating the knob 34 to adjust the lead screw 32, the position of the connecting slider 33 can be changed, thereby adjusting the swing radius of the sliding frame 35 and changing the coating frequency to adapt to solder strips of different lengths. The residual heat of the solder strip after heating helps the flux moisture evaporate, increasing its viscosity.

[0055] Step 3: The robotic arm places the photovoltaic panel on the T-shaped platform 53 and the flat chain 57. Servo motor 1 51 starts, driving the ball screw 43 to rotate, causing the slide 44 to move to the left, which in turn moves the gripper cylinder 50 to the right end of the feeding trough plate 3. The gripper cylinder 50 picks up the welding strip coated with flux. Then, drive motor 48 starts, which drives the gripper cylinder 50 and the welding strip it holds to rotate 180 degrees through the synchronous pulley 46 and synchronous belt 47. Subsequently, servo motor 1 51 reverses, and the slide 44 moves to the right, placing the welding strip on the predetermined position on the surface of the photovoltaic panel. At this time, the uncured flux on the bottom surface of the welding strip becomes sticky, temporarily fixing the welding strip to the photovoltaic panel.

[0056] Step 4: After placing a set of welding strips, drive motor 58 starts, driving the flat chain 57 to move one station via connecting roller 55 and sprocket 56, so that the next photovoltaic panel reaches the loading position. Repeat step 3 until multiple photovoltaic panels are covered with welding strips. Finally, cylinder 6 drives welding head 5 to move down, heating and welding the welding strips and photovoltaic panels.

[0057] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A photovoltaic module welding equipment, comprising a workbench, characterized in that, The workbench is equipped with: The welding strip leveling and conveying mechanism includes a feeding trough plate with grooves and a movable frame above it. The movable frame is driven to lift by a second cylinder and has a rolling wheel inside that is driven by a first drive motor and has heating wires on its outer wall. This wheel is used to heat, level and convey the welding strip in the groove. The flux coating mechanism includes a storage box and a transfer roller driven by a drive motor. The transfer roller is vertically and vertically mounted via a support slider inside a support plate and has a feeding sleeve on its outer wall. The transfer roller is connected to a swing mechanism driven by a servo motor, which causes it to periodically rise and fall, so as to intermittently apply flux to the bottom surface of the solder strip through the arc groove at the bottom of the feeding trough plate. A welding strip transfer and flipping mechanism includes a slide table that is driven to move laterally by a servo motor and a ball screw. The slide table is equipped with a flip-able gripper cylinder driven by a drive motor for gripping and flipping welding strips coated with flux. The component conveying and welding mechanism includes a flat chain and a T-shaped platform for supporting photovoltaic modules, and a welding head that is lifted and lowered by a cylinder. The flux applied intermittently by the flux coating mechanism can provide adhesive force to achieve temporary positioning when the solder strip transfer and flipping mechanism places the solder strip on the photovoltaic module, so as to prevent the solder strip from shifting during subsequent welding. The swing mechanism includes a vertical plate fixedly installed on the top surface of the worktable. A movable rod is rotatably connected to the rear side of the vertical plate. A second servo motor is installed on the front side of the vertical plate, and its drive shaft passes through the vertical plate and is fixedly connected to one side of the movable rod. An I-shaped slider is rotatably connected to the lower end of the movable rod. The top and bottom surfaces of the I-shaped slider are provided with rectangular grooves, and it is slidably connected to the inside of a sliding frame. A partition is fixedly installed inside the sliding frame, one side of which is rotatably connected to one end of a transmission rod, and the other end of the transmission rod is rotatably connected to a sliding plate fixed on the front support slider. A limiting slider is fixedly installed on one side of the sliding plate, and a limiting rail is fixedly installed on one side of the support plate located in front. The limiting slider is slidably connected to the limiting rail. A connecting slide is also fixedly installed on the top surface of the worktable. A lead screw is rotatably connected inside the connecting slide. A connecting slider is threaded onto the outer circular wall of the lead screw. An I-shaped slider is rotatably connected to one side of the connecting slider. The I-shaped slider is also slidably connected inside the sliding frame and located between the partition block and the second I-shaped slider. A knob is fixedly installed at the right end of the lead screw, which passes through one side of the connecting slide.

2. The photovoltaic module welding equipment according to claim 1, characterized in that: Sliding blocks are fixedly installed on both the front and rear side walls of the movable frame. Two slide rails are fixedly installed on the top surface of the worktable corresponding to the sliding blocks. The sliding blocks are slidably connected to the slide rails. The rolling wheel is fixedly sleeved on the outer circular wall of the support roller. The support roller is rotatably connected to the inside of the movable frame. The front end of the support roller passes through the movable frame and is fixedly installed with a transmission wheel one. The drive motor one is installed on one side of the movable frame. Its drive shaft passes through the movable frame and is fixedly installed with a transmission wheel two. The transmission wheel two and all the transmission wheels one are alternately connected by a transmission belt.

3. The photovoltaic module welding equipment according to claim 1, characterized in that: The number of gripper cylinders is several, arranged side by side between two connecting plates, and adjacent gripper cylinders are connected by connecting rods; two synchronous pulleys are rotatably connected to one side of the connecting plate located in front, and a synchronous belt is rotatably connected between the two synchronous pulleys; one end of the connecting rod located in front passes through the connecting plate located in front and is fixedly connected to one side of the synchronous pulley located above; the drive motor is installed on the rear side of the connecting plate located in front, and its drive shaft passes through the connecting plate and is fixedly connected to the side of the synchronous pulley located below.

4. The photovoltaic module welding equipment according to claim 1, characterized in that: The component conveying and welding mechanism also includes two support partitions fixedly installed on the top surface of the workbench. Two connecting rollers are rotatably connected between the two support partitions. A sprocket is fixedly sleeved on the outer circular wall of the connecting roller. A flat chain is rotatably connected between every two corresponding sprockets. A drive motor is installed on the front side of the support partition located in front. Its drive shaft passes through the support partition and is fixedly connected to the front end of the connecting roller on the right side. There are several T-shaped platforms, which are fixed on the top surface of the workbench and are alternately arranged with multiple sets of sprockets and flat chains.

5. A photovoltaic module welding equipment according to claim 1 or 2, characterized in that: The outer circular wall of the rolling roller is also fixedly fitted with a rolling soft sleeve made of flexible material, and the width of the rolling roller is smaller than the width of the groove on the feeding trough plate.

6. The photovoltaic module welding equipment according to claim 1, characterized in that: The top surface of the storage box is equipped with a cover plate, and a feeding roller is rotatably connected inside the cover plate. The outer circular wall surface of the feeding roller is in contact with the outer circular wall surface of the transfer roller.

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