A fully automatic photovoltaic panel stitcher

Abstract

The application discloses a full-automatic photovoltaic panel stitch welding machine, and relates to the technical field of photovoltaic panel production equipment, which comprises a frame body, a plurality of fixing rods are symmetrically arranged at the bottom of the frame body, supporting feet are respectively arranged at the bottom of the fixing rods, a conveying mechanism for conveying photovoltaic panels is arranged, guide rails for adjusting the stitch welding position of bus bars are arranged, the number of the guide rails is two, and the two guide rails are arranged between the conveying mechanisms. The application can heat the edges of the bus bars and the photovoltaic panels, dynamically adjust the temperature of a welding environment according to different types of bus bars and electrode materials of the battery pieces, improve the consistency of welding quality, form a small pre-pressure when the photovoltaic panels are positioned, offset the deformation of the photovoltaic panels, restore the photovoltaic panels to the original state after welding, reduce the internal damage of the photovoltaic panels, and improve the reliability and long-term power generation efficiency of the photovoltaic panels.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic panel production equipment technology, and in particular to a fully automatic photovoltaic panel stacking machine. Background Technology

[0002] Fully automatic photovoltaic panel stacking welding machines are automated equipment used in the production of photovoltaic modules. Their working principle is to use the high-frequency electromagnetic field generated by the welding head to generate eddy currents on the metal surface for heating, thereby raising the surface temperature of the metal. Then, the photovoltaic cells are welded together in series through busbars by pressure. Fully automatic photovoltaic panel stacking welding machines can achieve high-speed and high-precision welding, reduce manual operation, improve production efficiency, reduce labor costs, and at the same time improve product quality and consistency, meeting the needs of the photovoltaic industry for cost reduction and efficiency improvement.

[0003] However, existing photovoltaic panel stacking machines face challenges in temperature control during operation. The significant temperature difference between the busbar and the high-temperature welding head easily leads to incomplete or over-welded connections, reducing production quality. Furthermore, during welding, the rapid temperature rise at the weld joint prevents stress release at the connection between the photovoltaic panel and the busbar, potentially causing minor deformation or internal damage to the photovoltaic panel. This results in decreased power generation efficiency and reliability during subsequent use. Therefore, this application proposes a fully automatic photovoltaic panel stacking machine. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a fully automatic photovoltaic panel stacking machine.

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

[0006] A fully automatic photovoltaic panel stacking machine, comprising:

[0007] Frame;

[0008] Multiple fixing rods are symmetrically arranged at the bottom of the frame, and each fixing rod is equipped with a support foot at its bottom;

[0009] The system includes a conveying mechanism for transporting photovoltaic panels, guide rails for adjusting the overlapping welding position of busbars, and a support mechanism for moving photovoltaic panels. The number of guide rails is set to two, and both guide rails are arranged between the conveying mechanisms. The support mechanism is located on one side of the frame.

[0010] An assembly plate for fixing photovoltaic panels is disposed below the support mechanism and aligned above the conveying mechanism.

[0011] Two welding heads for welding photovoltaic panels and two trays for stacking busbars are provided. The welding heads are respectively located on both sides of the assembly plate, and the two trays are respectively positioned below the welding heads in coordination with the guide rail adjustment. A movable rod for preheating the photovoltaic panels and busbars is provided between the welding heads and the trays.

[0012] An electric heating wire is installed inside the cavity of the movable rod, and nylon threads are respectively provided on one of the two side walls of the movable rod.

[0013] In some possible embodiments, the conveying mechanism includes:

[0014] Multiple drive shafts are installed between corresponding side walls of the frame and are arranged at equal intervals. One end of each drive shaft is rotatably connected to the side wall of the frame, and the other end of each drive shaft is connected to a first motor through a transmission box. Multiple sets of pulleys are provided inside the transmission box.

[0015] Multiple rollers are coaxially fixedly connected to each of the multiple drive shafts, and the rollers on adjacent drive shafts are staggered.

[0016] In some possible embodiments, the same end of both guide rails abuts against the side wall of the frame, the other end of both guide rails extends out of the frame, and a baffle is connected to both guide rails.

[0017] Slider blocks are slidably connected to the two guide rails respectively, and a vertical rod is fixedly connected to the upper end of each slider.

[0018] In some possible embodiments, the top of the vertical rod is fixedly connected to the bottom of the corresponding storage tray, and the length L1 of the guide rail extending outside the frame is greater than the sum of the widths of the two storage trays, L2, i.e., L1>L2.

[0019] In some possible embodiments, the support mechanism includes:

[0020] Mounting base that is fixedly connected to the side wall of the frame;

[0021] A support arm is fixedly connected to the side wall of the mounting base. The support arm is L-shaped, and a hydraulic cylinder is mounted on the end of the support arm away from the mounting base via a connecting seat. The telescopic end of the hydraulic cylinder is connected to the upper surface of the mounting plate.

[0022] In some possible embodiments, two cylinders are symmetrically arranged on the assembly plate, and a support plate is connected to the telescopic end of each of the two cylinders. Multiple suction cups are installed on each of the two support plates, and the multiple suction cups are connected to an external negative pressure device through a hose.

[0023] In some possible embodiments, the movable rod consists of two parts: a square groove is provided on the side wall of the first part, and a connecting block is provided on the side wall of the second part, with the position of the connecting block corresponding to the position of the square groove.

[0024] In some possible embodiments, a drive mechanism for adjusting the position is also included, the drive mechanism being disposed at both ends of the movable rod.

[0025] In some possible embodiments, the drive mechanism includes:

[0026] The second motor, the connecting rod, and the two adjusting plates are fixedly installed at the bottom of the storage tray. The output shaft of the second motor and the connecting rod are respectively connected to the adjusting plates. The two adjusting plates are respectively arranged on both sides of the first and second parts of the movable rod.

[0027] In some possible embodiments, extension rods are slidably provided through the adjustment plates respectively, one end of the extension rod is connected to a limit block and the limit block is embedded in the corresponding adjustment plate, and the other end of the extension rod is fixedly connected to the side wall of the movable rod.

[0028] A spring is fitted onto the extension rod, with one end of the spring connected to the side wall of the adjustment plate and the other end of the spring connected to the side wall of the movable rod.

[0029] The fully automatic photovoltaic panel stacking welding machine of this invention solves the problem of unstable welding quality caused by temperature changes. By using heating wires installed inside the movable rod to radiate heat to the perimeter of the movable rod, the edges of the busbar and photovoltaic panel can be heated. The temperature of the welding environment can be dynamically adjusted according to different types of busbars and cell electrode materials to improve the consistency of welding quality.

[0030] Furthermore, the fully automatic photovoltaic panel stacking welding machine of this embodiment of the invention also solves the problem of slight deformation caused by stress during the photovoltaic panel stacking process. Through the cooperation of the second motor and the connecting rod, the side wall of the movable rod abuts against the photovoltaic panel, which can form a small pre-pressure when the photovoltaic panel is positioned to counteract the deformation of the photovoltaic panel. After welding is completed, the photovoltaic panel is restored to its original state, reducing internal damage to the photovoltaic panel and improving the reliability and long-term power generation efficiency of the photovoltaic panel. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the main structure of a fully automatic photovoltaic panel stacking machine according to an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the structure of the frame and the conveying mechanism in an embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of the guide rail, support mechanism, and assembly plate in an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the guide rail structure in an embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of the support mechanism and assembly plate in an embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the guide rail and storage tray in an embodiment of the present invention;

[0037] Figure 7 This is a schematic diagram of the structure of the storage tray and the movable rod in an embodiment of the present invention;

[0038] Figure 8 This is a partial structural diagram of the movable rod in an embodiment of the present invention.

[0039] In the diagram: 1. Frame; 11. Fixing rod; 12. Supporting leg;

[0040] 2. Conveying mechanism; 21. Drive shaft; 22. Roller; 23. First motor; 24. Transmission box;

[0041] 3. Guide rail; 31. Baffle; 32. Slider; 33. Vertical rod;

[0042] 4. Support mechanism; 41. Mounting base; 42. Support arm; 43. Connecting seat; 44. Hydraulic cylinder;

[0043] 5. Assembly plate; 51. Cylinder; 52. Support plate; 53. Suction cup;

[0044] 6. Welding head;

[0045] 7. Storage tray;

[0046] 8. Movable rod; 81. Connecting block; 82. Extension rod; 83. Spring; 84. Adjusting plate; 85. Limiting block; 86. Second motor; 87. Connecting rod; 88. Nylon thread. Detailed Implementation

[0047] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0048] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0049] Example 1:

[0050] Reference Figure 1-3 A fully automatic photovoltaic panel stacking machine includes a frame 1, with multiple fixed rods 11 symmetrically arranged at the bottom of the frame 1, and support feet 12 respectively installed at the bottom of the fixed rods 11.

[0051] The conveying mechanism 2 for transporting photovoltaic panels, the guide rail 3 for adjusting the overlapping welding position of the busbar, the number of guide rail 3 is set to two, and the two guide rail 3 are both set between the conveying mechanism 2. A support mechanism 4 for moving photovoltaic panels is set on one side of the frame 1. An assembly plate 5 for fixing photovoltaic panels is set below the support mechanism 4, and the assembly plate 5 is aligned and set above the conveying mechanism 2.

[0052] Two welding heads 6 are used for welding photovoltaic panels, and the two welding heads 6 are respectively located on both sides of the assembly plate 5. Two storage trays 7 are used for stacking busbars, and the two storage trays 7 are respectively located below the welding heads 6 in coordination with the guide rail 3. Between the corresponding welding heads 6 and storage trays 7, there is a movable rod 8 for preheating the photovoltaic panels and busbars. The cavity inside the movable rod 8 is equipped with heating wires. Nylon wires 88 are respectively provided on one of the two side walls of the movable rod 8. The two ends of the movable rod 8 are provided with drive mechanisms for adjusting the position.

[0053] In this embodiment, the device is placed in the working area by the fixing rod 11 and the support foot 12, and is used in conjunction with other equipment in the photovoltaic panel production process. The photovoltaic panel is moved to the conveying mechanism 2, and under the operation of the first motor 23, the photovoltaic panel is driven to be conveyed to the bottom of the assembly plate 5. The photovoltaic panel is positioned by the suction cup 53 so that the welding head 6 can weld the busbar. After the welding is completed, the photovoltaic panel is placed on the conveying mechanism 2 again and conveyed to the next process area. This process does not require manual intervention, which can effectively reduce labor costs and improve production efficiency.

[0054] Example 2:

[0055] Unlike Example 1, referring to Figure 2-4 This embodiment also has the following further features:

[0056] To facilitate the transportation of photovoltaic panels, the following improvements are made: the conveying mechanism 2 includes multiple drive shafts 21 installed between the corresponding side walls of the frame 1, and the multiple drive shafts 21 are arranged at equal intervals. One end of each drive shaft 21 is rotatably connected to the side wall of the frame 1, and the other end of each drive shaft 21 is connected to a first motor 23 through a transmission box 24. The transmission box 24 is equipped with multiple sets of pulleys, and multiple rollers 22 are coaxially fixedly connected to each of the multiple drive shafts 21, and the rollers 22 on adjacent drive shafts 21 are staggered.

[0057] Specifically, during transportation, the lower surface of the photovoltaic panel comes into contact with multiple rollers 22 at different positions simultaneously. The staggered rollers 22 can promptly correct the conveying direction of the photovoltaic panel, preventing the photovoltaic panel from shifting during transportation and facilitating subsequent positioning of the photovoltaic panel.

[0058] Implementation Three:

[0059] Compared to Embodiment 1 and Embodiment 2, refer to Figure 6 To facilitate the placement of the manifold, the same end of both guide rails 3 abuts against the side wall of the frame 1, and the other end of both guide rails 3 extends outside the frame 1. Both guide rails 3 are connected to a baffle 31. Slider 32 is slidably connected to each of the two guide rails 3. A vertical rod 33 is fixedly connected to the upper end of the slider 32. The top of the vertical rod 33 is fixedly connected to the bottom of the corresponding storage tray 7. Furthermore, the length L1 of the guide rail 3 extending outside the frame 1 is greater than the sum of the widths L2 of the two storage trays 7, i.e., L1>L2.

[0060] Reference Figure 5 In this embodiment, the support mechanism 4 includes a mounting base 41 fixedly connected to the side wall of the frame 1. A support arm 42 is fixedly connected to the side wall of the mounting base 41. The support arm 42 is L-shaped. A hydraulic cylinder 44 is mounted on the end of the support arm 42 away from the mounting base 41 through a connecting base 43. The telescopic end of the hydraulic cylinder 44 is connected to the upper surface of the assembly plate 5.

[0061] The assembly plate 5 has two cylinders 51 symmetrically arranged on it. The telescopic ends of the two cylinders 51 are respectively connected to the support plate 52. Multiple suction cups 53 are installed on the two support plates 52 respectively. The multiple suction cups 53 are connected to the external negative pressure device through a hose.

[0062] Specifically, during the operation, the slider 32 on the guide rail 3 drives the placement tray 7 to move. In the initial state, the two placement trays 7 are located on the side of the guide rail 3 near the baffle 31. At this time, the external robotic arm can place the manifold strips to be processed on the corresponding placement trays 7. Then, the hydraulic cylinder 44 drives the assembly plate 5 to move downward as a whole. The cylinder 51 adjusts the distance between the lower suction cup 53 and the photovoltaic panel so that the suction cup 53 contacts the upper surface of the photovoltaic panel. The external negative pressure device is activated, and the suction cup 53 is fixed to the photovoltaic panel. The hydraulic cylinder 44, in conjunction with the cylinder 51, drives the photovoltaic panel to move upward. At this time, the guide rail 3 controls the slider 32 to drive the manifold strips on the placement tray 7 to move from below the photovoltaic panel to both ends of the photovoltaic panel for subsequent welding work.

[0063] Example 4:

[0064] Reference Figure 7 and Figure 8 Compared to embodiments one to three, the movable rod 8 is composed of two parts. A square groove is provided on the side wall of the first part, and a connecting block 81 is provided on the side wall of the second part. The position of the connecting block 81 corresponds to the position of the square groove. Furthermore, through the connection of the connecting block 81, the movable rod 8 moves synchronously as a whole, ensuring that the movable rod 8 remains stable when the position of the movable rod 8 is adjusted.

[0065] The drive mechanism includes a second motor 86 and a connecting rod 87 fixedly installed at the bottom of the storage tray 7. The output shaft of the second motor 86 and the connecting rod 87 are respectively connected to an adjustment plate 84. The two adjustment plates 84 are respectively set on both sides of the first and second parts of the movable rod 8.

[0066] Furthermore, such as Figure 7 As shown, the connecting rod 87 is L-shaped, with one end of the connecting rod 87 fixedly connected to the bottom of the storage tray 7, and the other end of the connecting rod 87 kept horizontal and aligned with the output shaft of the second motor 86. The connecting rod 87 is rotatably connected to the side wall of the corresponding adjusting plate 84. Thus, when the adjusting plate 84 drives the movable rod 8 to move, it will rotate around the position of the connecting rod 87 and the output shaft of the second motor 86 as the axis, ensuring stability during adjustment.

[0067] In addition, extension rods 82 are slidably provided on the adjustment plate 84. One end of the extension rod 82 is connected to a limit block 85, and the limit block 85 is embedded in the corresponding adjustment plate 84. The other end of the extension rod 82 is fixedly connected to the side wall of the movable rod 8. A spring 83 is sleeved on the extension rod 82, and one end of the spring 83 is connected to the side wall of the adjustment plate 84, and the other end of the spring 83 is connected to the side wall of the movable rod 8.

[0068] In this embodiment, in conjunction with the movement of the tray 7, after the busbar moves to both ends of the photovoltaic panel, the second motor 86 is started. In conjunction with the connecting rod 87 on the other side, the output shaft of the second motor 86 drives the adjusting plate 84 to rotate, and finally drives the movable rod 8 to flip over to the top of the tray 7. The heating wire installed inside the movable rod 8 radiates heat to the surroundings, preheating the busbar and the edge of the photovoltaic panel below, thereby reducing the temperature difference between the welding head 6 and the welding head 6, avoiding the expansion of the welding point due to the instantaneous temperature rise during the welding process, improving the consistency of welding quality, and effectively reducing the phenomenon of incomplete welding and over-welding.

[0069] Compared to embodiments one to three, the following improvements are made to enhance welding accuracy: When fixing the photovoltaic panel with the suction cup 53, both ends of the photovoltaic panel are placed on the side wall of the placement tray 7. At this time, the external negative pressure device controls the suction cup 53 to stop fixing the photovoltaic panel. The second motor 86 drives the side wall of the movable rod 8 to abut against the photovoltaic panel, which can further adjust the placement position of the photovoltaic panel and improve the positioning accuracy of the welding point. At the same time, under the abutment of the movable rods 8 on both sides, a small pre-pressure can be generated on the photovoltaic panel. When the photovoltaic panel is fixed by the suction cup 53 at this time, the pre-deformation can abut against the stress generated by welding, so that the photovoltaic panel returns to its original state after welding. The pre-deformation offsets the stress generated by welding, reduces internal damage to the photovoltaic panel, and improves the production quality of the photovoltaic panel.

[0070] In accordance with the above embodiments one to three, in order to clean the welding head 6 and the storage tray 7, the first and second parts of the movable rod 8 are pulled to both sides. This will cause the extension rods 82 on both sides to move synchronously, eventually causing the limiting block 85 to move out of the adjusting plate 84. At the same time, the connecting block 81 on the second part separates from the square groove opened on the first part. At this time, the two parts of the movable rod 8 can be rotated respectively, eventually adjusting the nylon wire 88 on the movable rod 8 to the up and down direction. The slider 32 on the guide rail 3 controls the storage tray 7 to move below the welding head 6. Then, the second motor 86 drives the movable rod 8 to swing back and forth in both directions. The friction between the nylon wire 88 and the welding head 6 and the storage tray 7 can play a certain cleaning role, avoiding the accumulation of debris or slag at the welding point and reducing the impact on the performance and accuracy of the equipment during the welding process.

[0071] 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 fully automatic photovoltaic panel stacking machine, characterized in that, include: Frame; Multiple fixing rods are symmetrically arranged at the bottom of the frame, and each fixing rod is equipped with a support foot at its bottom; The system includes a conveying mechanism for transporting photovoltaic panels, guide rails for adjusting the overlapping welding position of busbars, and a support mechanism for moving photovoltaic panels. The number of guide rails is set to two, and both guide rails are arranged between the conveying mechanisms. The support mechanism is located on one side of the frame. An assembly plate for fixing photovoltaic panels is disposed below the support mechanism and aligned above the conveying mechanism. Two welding heads for welding photovoltaic panels and two trays for stacking busbars are provided. The welding heads are respectively located on both sides of the assembly plate, and the two trays are respectively positioned below the welding heads in coordination with the guide rail adjustment. A movable rod for preheating the photovoltaic panels and busbars is provided between the welding heads and the trays. An electric heating wire is installed inside the cavity of the movable rod, and nylon threads are respectively provided on one of the two side walls of the movable rod.

2. The fully automatic photovoltaic panel stacking machine according to claim 1, characterized in that, The conveying mechanism includes: Multiple drive shafts are installed between corresponding side walls of the frame and are arranged at equal intervals. One end of each drive shaft is rotatably connected to the side wall of the frame, and the other end of each drive shaft is connected to a first motor through a transmission box. Multiple sets of pulleys are provided inside the transmission box. Multiple rollers are coaxially fixedly connected to each of the multiple drive shafts, and the rollers on adjacent drive shafts are staggered.

3. The fully automatic photovoltaic panel stacking machine according to claim 1, characterized in that, Both guide rails have one end that abuts against the side wall of the frame, and the other end of both guide rails extends out of the frame. Both guide rails are connected to a baffle. Slider blocks are slidably connected to the two guide rails respectively, and a vertical rod is fixedly connected to the upper end of each slider.

4. The fully automatic photovoltaic panel stacking machine according to claim 3, characterized in that, The top of the vertical rod is fixedly connected to the bottom of the corresponding storage tray, and the length L1 of the guide rail extending outside the frame is greater than the sum of the widths of the two storage trays, L2, that is, L1>L2.

5. A fully automatic photovoltaic panel stacking machine according to any one of claims 1 to 4, characterized in that, The supporting structure includes: Mounting base that is fixedly connected to the side wall of the frame; A support arm is fixedly connected to the side wall of the mounting base. The support arm is L-shaped, and a hydraulic cylinder is mounted on the end of the support arm away from the mounting base via a connecting seat. The telescopic end of the hydraulic cylinder is connected to the upper surface of the mounting plate.

6. A fully automatic photovoltaic panel stacking machine according to any one of claims 1 to 4, characterized in that, Two cylinders are symmetrically arranged on the assembly plate. Each cylinder has a support plate connected to its telescopic end. Multiple suction cups are installed on each of the two support plates. The multiple suction cups are connected to an external negative pressure device through a hose.

7. A fully automatic photovoltaic panel stacking machine according to any one of claims 1 to 4, characterized in that, The movable rod consists of two parts. The first part has a square groove on its side wall, and the second part has a connecting block on its side wall. The position of the connecting block corresponds to the position of the square groove.

8. The fully automatic photovoltaic panel stacking machine according to claim 7, characterized in that, It also includes a drive mechanism for adjusting the position, the drive mechanism being disposed at both ends of the movable rod.

9. A fully automatic photovoltaic panel stacking machine according to claim 8, characterized in that, The drive mechanism includes: The second motor, the connecting rod, and the two adjusting plates are fixedly installed at the bottom of the storage tray. The output shaft of the second motor and the connecting rod are respectively connected to the adjusting plates. The two adjusting plates are respectively arranged on both sides of the first and second parts of the movable rod.

10. A fully automatic photovoltaic panel stacking machine according to claim 9, characterized in that, The adjustment plate is provided with an extension rod that slides through it. One end of the extension rod is connected to a limit block and the limit block is embedded in the corresponding adjustment plate. The other end of the extension rod is fixedly connected to the side wall of the movable rod. A spring is fitted onto the extension rod, with one end of the spring connected to the side wall of the adjustment plate and the other end of the spring connected to the side wall of the movable rod.

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