Device for tinning photovoltaic solder strip

Abstract

The utility model relates to the technical field of tin plating of photovoltaic solder strips, in particular to a device for tin plating of a photovoltaic solder strip. According to the technical scheme, the equipment comprises an equipment box, a control box is fixed to the side wall of the equipment box, a tin liquor pool is arranged on the front side of the upper end of the equipment box, a fixing frame is fixed to the rear side of the equipment box, a winding disc is rotationally connected to the fixing frame, and a driving motor for driving the winding disc to rotate is arranged; a mounting frame and a laser diameter measuring instrument are mounted on the side, close to the tin liquid pool, of the upper end of the equipment box, a cooling box and a checking plate are arranged on the side, close to the winding disc, of the upper end of the equipment box, a set of checking holes are formed in the checking plate, and the hole diameters of the checking holes are sequentially decreased. According to the utility model, the laser range finder is used for monitoring the coating tin liquid, the secondary air knife is used for processing, the accuracy of the coating thickness is improved, and finally, a method of passing through the checking hole is used for finishing, so that the uniformity and accuracy of the tinning thickness are ensured, and the product quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic solder ribbon tin plating technology, specifically to a device for tin plating photovoltaic solder ribbons. Background Technology

[0002] Photovoltaic solder ribbons are divided into busbars and interconnects, and are mainly used for connecting photovoltaic module cells, playing an important role in conductivity and electrostatic concentration. Photovoltaic solder ribbon tin plating is a process of coating a layer of tin on the surface of photovoltaic solder ribbon, which is mainly used to improve the conductivity, corrosion resistance and welding performance of the solder ribbon.

[0003] During the tin plating process, the tin plating thickness needs to be adjusted according to actual needs. Ensuring uniform tin plating thickness and dimensional compliance is crucial for product quality. Common thickness control methods primarily utilize air knives to blow away excess molten tin, achieving the desired control. However, in actual operation, it is difficult to achieve precise control with air knives in a single operation, and there can also be a thickness difference between the leeward and windward sides of the photovoltaic solder ribbon. Therefore, it is necessary to design a tin plating equipment with a monitoring and calibration structure. Utility Model Content

[0004] The purpose of this invention is to provide an apparatus for tin plating of photovoltaic solder ribbons, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes an equipment box, a control box fixed to the side wall of the equipment box, a molten solder pool on the front upper side of the equipment box, a fixed frame fixed to the rear side of the equipment box, a winding reel rotatably connected to the fixed frame, and a drive motor for driving the winding reel to rotate. A mounting bracket and a laser diameter gauge are installed on the upper side of the equipment box near the molten solder pool. A cooling box and a calibration plate are installed on the upper side of the equipment box near the winding reel. A set of calibration holes are opened on the calibration plate, with the hole diameter decreasing sequentially. Two mounting brackets are provided, distributed on both sides of the laser diameter gauge. An air knife is fixed on each mounting bracket. An air inlet quick-change connector is installed on the upper end of each air knife, and an air outlet is provided at the bottom.

[0006] Preferably, a pair of inner guide wheels are installed in the molten tin pool, and an outer guide wheel is installed at the upper end of the equipment box at a position corresponding to the inner guide wheels.

[0007] Preferably, the cooling box is equipped with heat dissipation pipes and a circulation pump that drives the liquid inside the heat dissipation pipes is fixed thereon. The heat dissipation pipes are distributed in a serpentine pattern both inside and outside the cooling box.

[0008] Preferably, fins are uniformly fixed on the outer side of the heat dissipation pipe, and a cooling fan is installed on the side wall of the cooling box at a position corresponding to the heat dissipation pipe.

[0009] Preferably, a fixing plate is fixed on the equipment box at a position corresponding to the calibration plate. A pair of side plates are fixed at the upper end of the fixing plate, and the calibration plate is located between the side plates. Positioning posts are fixed at equal intervals at the bottom of the calibration plate. Positioning grooves are opened at equal intervals at the upper end of the fixing plate at positions corresponding to the positioning posts. The positioning posts are inserted into the positioning grooves. Fixing bolts are installed on the side plates. Limiting grooves are opened on the calibration plate at positions corresponding to the fixing bolts.

[0010] Preferably, a pair of stabilizing wheels are installed on the equipment box on both sides of the calibration plate, and the position of each pair of stabilizing wheels is aligned with the calibration hole.

[0011] Compared with the prior art, the beneficial effects of this utility model are: using a laser rangefinder to monitor the molten tin coating, using a secondary air knife to improve the accuracy of the coating thickness, and finally using a method of passing through a verification hole for finishing to ensure the uniformity and accuracy of the tin plating thickness, thereby improving product quality. Attached Figure Description

[0012] Figure 1 This is a partial cross-sectional view of the device for tin plating of photovoltaic solder ribbon according to the present invention.

[0013] Figure 2 This is a schematic diagram of the combined structure of a calibration plate and a fixing plate for tin plating of photovoltaic solder ribbons according to the present invention.

[0014] Figure 3 This utility model relates to a device for tin plating photovoltaic solder strips. Figure 1 Enlarged structural diagram at point A in the middle.

[0015] In the diagram: 1. Equipment box; 11. Control box; 2. Solder bath; 21. Inner guide wheel; 22. Outer guide wheel; 3. Mounting frame; 31. Air knife; 32. Air outlet; 33. Quick-connect air inlet connector; 4. Laser diameter gauge; 5. Cooling box; 51. Heat sink; 52. Circulating pump; 53. Cooling fan; 54. Fins; 6. Calibration plate; 61. Calibration hole; 62. Fixing plate; 63. Side plate; 64. Fixing bolt; 65. Limiting groove; 66. Stabilizing wheel; 67. Positioning groove; 7. Rewinding reel; 71. Fixing frame. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1 This utility model provides a technical solution: it includes an equipment box 1, a control box 11 fixed to the side wall of the equipment box 1, a molten solder pool 2 set on the front side of the upper end of the equipment box 1, a fixing frame 71 fixed on the rear side of the equipment box 1, a winding reel 7 rotatably connected to the fixing frame 71, and a drive motor for driving the winding reel 7 to rotate, a mounting frame 3 and a laser diameter gauge 4 are installed on the upper end of the equipment box 1 near the molten solder pool 2, a cooling box 5 and a calibration plate 6 are set on the upper end of the equipment box 1 near the winding reel 7, a set of calibration holes 61 are opened on the calibration plate 6, and the hole diameters decrease sequentially, there are two mounting frames 3, which are distributed on both sides of the laser diameter gauge 4, and an air knife 31 is fixed on each mounting frame 3, an air inlet quick-change connector 33 is installed on the upper end of the air knife 31, and an air outlet 32 ​​is set at the bottom.

[0018] A pair of inner guide rollers 21 are installed inside the molten solder pool 2. An outer guide roller 22 is installed at the upper end of the equipment box 1 at a position corresponding to the inner guide rollers 21. The inner guide rollers 21 are used to press the solder strip down into the molten solder pool 2, which can ensure that the solder strip is fully coated.

[0019] Cooling chamber 5 is equipped with heat dissipation pipes 51 and a circulation pump 52 is fixed thereon to drive the liquid flow in the heat dissipation pipes 51. The heat dissipation pipes 51 are distributed in a serpentine pattern both inside and outside the cooling chamber 5. Fins 54 are evenly fixed on the outer side of the heat dissipation pipes 51. A cooling fan 53 is installed on the side wall of the cooling chamber 5 at a position corresponding to the heat dissipation pipes 51. When the coolant in the heat dissipation pipes 51 circulates, it can absorb heat inside the cooling chamber 5 and release it outside the cooling chamber 5. The cooling fan 53 and fins 54 can increase the heat dissipation efficiency.

[0020] A fixing plate 62 is fixed on the equipment box 1 at a position corresponding to the verification plate 6. A pair of side plates 63 are fixed to the upper end of the fixing plate 62. The verification plate 6 is located between the side plates 63. Positioning posts are fixed at equal intervals at the bottom of the verification plate 6. Positioning grooves 67 are opened at equal intervals at the upper end of the fixing plate 62 at positions corresponding to the positioning posts. The positioning posts are inserted into the positioning grooves 67. Fixing bolts 64 are installed on the side plates 63. Limiting grooves 65 are opened on the verification plate 6 at positions corresponding to the fixing bolts 64. A pair of stabilizing wheels 66 are installed on both sides of the verification plate 6 on the equipment box 1. The positions of each pair of stabilizing wheels 66 are aligned with the verification holes 61. By inserting the positioning posts at the bottom of the verification plate 6 into different positioning grooves 67, the position of the verification plate 6 can be adjusted horizontally and kept fixed in the horizontal direction. Then, by rotating the fixing bolts 64, their ends are inserted into the limiting grooves 65, which can be used to position the vertical direction, thereby ensuring the stability of the verification plate 6. The size of the verification holes 61 can be freely selected according to the actual tin plating thickness requirements or the diameter of the baseline.

[0021] Working principle: First, the entire device is connected to an external power source. The drive motor drives the winding reel 7 to rotate, allowing the photovoltaic solder ribbon to pass sequentially through the molten tin pool 2, mounting frame 3, laser diameter gauge 4, cooling chamber 5, and calibration plate 6. During this process, the photovoltaic solder ribbon is coated with molten tin in the molten tin pool 2, then blown by the front air knife 31. After the treatment, it is monitored by the laser diameter gauge 4. If the diameter is still too large, it is treated by the air knife 31 a second time to increase the accuracy of the tin plating thickness. Then it is cooled in the cooling chamber 5 to solidify the molten tin on its surface. Finally, it passes through the designated calibration hole and the corresponding tin plating layer is scraped off, which can further ensure the uniformity and accuracy of the tin plating thickness, thus effectively improving the tin plating quality.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An apparatus for tin plating of photovoltaic solder strips, comprising an equipment housing (1), characterized in that: A control box (11) is fixed to the side wall of the equipment box (1). A molten tin pool (2) is provided on the front side of the upper end of the equipment box (1). A fixing frame (71) is fixed to the rear side of the equipment box (1). A winding reel (7) is rotatably connected to the fixing frame (71), and a drive motor for driving the winding reel (7) to rotate is provided. A mounting frame (3) and a laser diameter gauge (4) are installed on the side of the upper end of the equipment box (1) near the molten tin pool (2). A cooling box (5) and a calibration plate (6) are provided on the side of the upper end of the equipment box (1) near the winding reel (7). A set of calibration holes (61) are opened on the calibration plate (6), and the hole diameter decreases sequentially. There are two mounting frames (3), which are distributed on both sides of the laser diameter gauge (4). An air knife (31) is fixed on each mounting frame (3). An air inlet quick-change connector (33) is installed on the upper end of the air knife (31), and an air outlet (32) is provided at the bottom.

2. The apparatus for tin plating photovoltaic solder strips according to claim 1, characterized in that: A pair of inner guide wheels (21) are installed inside the tin bath (2), and an outer guide wheel (22) is installed on the upper end of the equipment box (1) at a position corresponding to the inner guide wheels (21).

3. The apparatus for tin plating photovoltaic solder strips according to claim 1, characterized in that: The cooling box (5) is equipped with heat dissipation pipes (51) and a circulation pump (52) is fixed thereon to drive the liquid flow in the heat dissipation pipes (51). The heat dissipation pipes (51) are distributed in a serpentine pattern both inside and outside the cooling box (5).

4. The apparatus for tin plating photovoltaic solder strips according to claim 3, characterized in that: Fins (54) are evenly fixed on the outside of the heat dissipation pipe (51), and a cooling fan (53) is installed on the side wall of the cooling box (5) at a position corresponding to the heat dissipation pipe (51).

5. The apparatus for tin plating photovoltaic solder ribbon according to claim 1, characterized in that: A fixing plate (62) is fixed on the equipment box (1) at a position corresponding to the calibration plate (6). A pair of side plates (63) are fixed on the upper end of the fixing plate (62). The calibration plate (6) is located between the side plates (63). Positioning posts are fixed at equal intervals at the bottom of the calibration plate (6). Positioning grooves (67) are opened at equal intervals on the upper end of the fixing plate (62) at a position corresponding to the positioning posts. The positioning posts are inserted into the positioning grooves (67). Fixing bolts (64) are installed on the side plates (63). Limiting grooves (65) are opened on the calibration plate (6) at a position corresponding to the fixing bolts (64).

6. The apparatus for tin plating photovoltaic solder strips according to claim 1, characterized in that: A pair of stabilizing wheels (66) are installed on the equipment box (1) and on both sides of the calibration plate (6), and the position of each pair of stabilizing wheels (66) is aligned with the calibration hole (61).

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