Photovoltaic welding strip tin plating device and working method thereof

Abstract

The photovoltaic welding strip tin plating device comprises a tin pot, a side plate is installed at the top of the tin pot, a guide wheel and an auxiliary feeding mechanism are installed on the side plate, a ceramic guide base is installed in the tin pot, a U-shaped guide groove is formed in the outer side of the ceramic guide base, sliding arms are installed on the two sides of the tin pot, and a tin plating groove is formed in the upper portion of the sliding arm. A side groove for the sliding arm to move up and down is formed in the side plate; precise local heating and stable temperature control of tin liquid are achieved, the problems of local solidification and uneven tin coating are fundamentally solved, a local heating system is composed of a combined seat, a heating rod and a heat conduction seat, the module directly surrounds the periphery of a welding strip passing path, and the welding strip passing path is directly heated. The tin liquid flowing through the key area is subjected to centralized and accurate secondary heating and heat preservation, heat dissipation of the area is effectively compensated, it is ensured that the tin liquid is always in the optimal liquidity and infiltration temperature, and therefore a tin layer on the surface of the welding strip is uniform in thickness, smooth and flat, and the defects of nodulation, tip pulling and the like are completely eradicated.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic solder ribbon processing technology, and in particular to a photovoltaic solder ribbon tinning device and its working method. Background Technology

[0002] In the manufacturing process of photovoltaic modules, photovoltaic solder ribbons, as key conductive components of series-connected solar cells, directly determine the module's conductivity and long-term reliability through the quality of their tin coating. Currently, the tin coating equipment widely used in the industry faces several specific technical challenges that urgently need to be addressed:

[0003] Uneven solder temperature and local solidification: Traditional equipment mainly relies on overall heating of the main solder pot, which has a large thermal inertia and inaccurate temperature control. Especially in the outlet area where the solder strip passes through, due to the large contact area with air and rapid heat dissipation, an oxide film is easily formed on the surface of the solder liquid, or even local solidification occurs. This can lead to defects such as uneven thickness of the solder coating on the surface of the solder strip, nodules, and spikes. In severe cases, it may even scratch and damage the guide sleeve or cause the solder strip to break.

[0004] Severe oxidation of molten tin leads to increased slag: Molten tin will oxidize rapidly when it comes into contact with air at high temperature, generating a large amount of tin slag. This tin slag not only mixes into the molten tin, affecting the purity of the tin coating and causing the solder strip surface to be rough and impurities to be present, but also adheres to the solder strip and guide sleeve, requiring frequent machine shutdowns for cleaning, which greatly reduces production efficiency and raw material utilization.

[0005] The feeding and threading of welding strips is cumbersome: For welding strips of different specifications or batches, the initial feeding and threading process usually relies entirely on manual operation. Workers need to manually thread the thin and soft welding strips through narrow guide rollers, guide grooves and molds. The process is time-consuming and labor-intensive, with poor positioning accuracy and the risk of burns. It cannot adapt to the automated and high-efficiency production rhythm.

[0006] The automation level of tin dross cleaning is low: removing oxidized tin dross from the surface of molten tin is mostly done manually or by simply pushing it with a scraper. The cleaning is not thorough and the working environment is harsh. The cleaning device often interferes with the heating and conveyor belt mechanisms, making it difficult to achieve online cleaning without stopping the machine, which affects the continuity of production. Summary of the Invention

[0007] The present invention addresses the problem of providing a photovoltaic solder ribbon tinning device and its working method, which solves the technical problems of inaccurate tin liquid temperature control, unstable solder ribbon guidance, severe tin liquid oxidation, and inconvenient tin dross cleaning in existing tinning equipment.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A photovoltaic soldering strip tinning device includes a solder pot, a side plate mounted on the top of the solder pot, guide wheels and an auxiliary feeding mechanism mounted on the side plate, a ceramic guide seat mounted inside the solder pot, a U-shaped guide groove on the outer side of the ceramic guide seat, sliding arms mounted on both sides of the solder pot, side grooves for the sliding arms to move up and down on the side plate, a semi-circular sealing seat mounted on the top of the sliding arm, a semi-circular assembly seat mounted on the bottom of the sealing seat, a plurality of heating rods vertically mounted inside the assembly seat, a heat-conducting seat embedded in the inner side of the assembly seat, an air cavity opened inside the bottom of the assembly seat, and the air cavity communicating with an air hole opened on the inner side of the bottom of the assembly seat, the air cavity being connected to the sliding arm through an air supply pipe;

[0010] The tin pot has an overflow port at one end and a collection box installed at the other end. A tin-pushing mechanism is slidably installed on the tin pot.

[0011] Preferably, the auxiliary feeding mechanism includes a first motor mounted on the side plate, a swing arm mounted on the output end of the first motor, a fixed column mounted on the end of the swing arm, an insertion hole on the fixed column, and a limit bolt mounted on the end of the fixed column.

[0012] The guide wheel's groove, U-shaped guide groove, and insertion hole are all on the same plane.

[0013] Preferably, two columns are symmetrically installed on the bottom side of the tin pot, and a transmission box is installed at the bottom of the two columns. The input end of the transmission box is connected to the output end of the second motor.

[0014] Preferably, the two output ends of the transmission box are equipped with first one-way threaded rods inside the column, and the two first one-way threaded rods are respectively threaded to the two sides of the middle part of the lifting seat.

[0015] Preferably, the bottom sides of both ends of the lifting seat are provided with sliding grooves, a third motor is installed at the end of the lifting seat, and a second one-way threaded rod is installed at the output end of the third motor. The two ends of the second one-way threaded rod are located in the sliding groove with opposite threads, and the two ends of the second one-way threaded rod are respectively threadedly connected to two sliding arms.

[0016] Preferably, the sealing seat and the sliding arm are equipped with wires, and the wires are connected to the heating rod and the external power supply. The sliding arm is provided with an air groove, and the air groove is connected to the air supply pipe.

[0017] Preferably, the solder pushing mechanism includes inner grooves on both sides of the top of the solder pot, and a bracket groove adapted to the mounting bracket is provided on the side plate. A fourth motor is symmetrically installed at the end of the solder pot, and a second one-way threaded rod is installed at the output end of the fourth motor in the inner groove.

[0018] Preferably, the second one-way threaded rod is threadedly connected to the slider, the slider is equipped with a mounting bracket, and a pusher plate is rotatably mounted between the two mounting brackets.

[0019] Preferably, a fifth motor is mounted on one of the mounting brackets, and a rotating shaft is mounted on the output end of the fifth motor, and the rotating shaft is fixedly connected to the pusher plate.

[0020] A method for operating a photovoltaic solder ribbon tinning device, the specific operating steps of which are as follows:

[0021] Step 1: The second motor drives the transmission box to rotate the first one-way threaded rod, which in turn drives the lifting seat to rise and fall, thereby realizing the lifting of the sliding arm, sealing seat and combination seat. The third motor drives the two-way threaded rod to rotate, which in turn drives the sliding arm connected by the thread to move. The two sliding arms move in opposite directions at the same speed. The sliding arms realize the separation and combination of the combination seat. Before processing, the combination seat is in the separated state. The photovoltaic welding strip is inserted into the insertion hole through the guide wheel and fixed by the limit bolt. At this time, the first motor drives the swing arm to rotate, which in turn drives the photovoltaic welding strip to pass through the bottom of the ceramic guide seat and between the two combination seats. Then the two combination seats combine to cover the outside of the photovoltaic welding strip. After the photovoltaic welding strip is removed from the fixed column, it is passed through the mold.

[0022] Step 2: Under the guidance of the guide roller and ceramic guide seat, the photovoltaic solder ribbon passes through the molten solder in the solder pot to complete the soldering process. When the photovoltaic solder ribbon passes between the two assembly seats, the heating rod inside the assembly seat is activated. The heat is conducted through the heat conduction seat to continuously heat the molten solder in the two assembly seats, preventing the surface of the molten solder in the assembly seats from solidifying. At the same time, nitrogen gas is continuously introduced into the air chamber of the assembly seat through the air groove of the sliding arm and the air supply pipe. Nitrogen gas overflows from the bottom of the assembly seat through the air hole, focusing on inhibiting the oxidation of the molten solder between the two assembly seats.

[0023] Step 3: After the single roll of photovoltaic solder ribbon is tinned, the sliding arm drives the sealing seat and the assembly seat to separate and move upward. The fifth motor drives the pusher plate to rotate, rotating the pusher plate until it is partially below the surface of the molten tin. Then, the fourth motor drives the second one-way threaded rod to rotate, which in turn drives the threaded slider and the mounting bracket to move. At this time, the pusher plate moves, pushing the tin oxide on the molten tin towards the overflow port until the pusher plate reaches the overflow port. The tin oxide is collected by the collection box. Then the pusher plate flips and leaves the molten tin, while the slider and the mounting bracket move back to their initial positions.

[0024] The beneficial effects of this invention are:

[0025] It achieves precise local heating and stable temperature control of molten solder, fundamentally solving the problems of local solidification and uneven solder coating. The local heating system, consisting of a combination base, heating rod, and heat-conducting base, directly surrounds the outer periphery of the solder ribbon's travel path, providing concentrated and precise secondary heating and heat preservation for the molten solder flowing through this critical area. This effectively compensates for heat dissipation in this area, ensuring that the molten solder is always at the optimal fluidity and wetting temperature, thereby making the solder layer thickness on the solder ribbon surface uniform, smooth, and flat, eliminating defects such as nodules and spikes.

[0026] An inert gas protection mechanism was introduced, which significantly inhibited solder oxidation, improved solder coating quality and material utilization. An air chamber and vents were installed at the bottom of the assembly base, and nitrogen was continuously introduced through the air groove and air supply pipe within the sliding arm. The inert gas formed a protective layer on the surface of the solder, isolating it from air and significantly reducing the generation of oxidized solder dross at the source. This not only improved the purity and surface quality of the solder ribbon coating but also reduced solder consumption and the frequency of equipment maintenance due to solder dross accumulation.

[0027] An automated, guided feeding mechanism is provided, which greatly simplifies the tape threading process and improves production efficiency and safety. The auxiliary feeding mechanism achieves semi-automated tape threading guidance. Operators only need to fix the head of the welding strip in the insertion hole, and the motor drives the swing arm to move the welding strip precisely along the predetermined path, through the guide wheel 3 and the U-shaped guide groove 5 to complete the entire threading process. This design reduces the skill requirements of operators, avoids the difficulty and risk of burns from manual tape threading, and has a fast changeover speed, making it very suitable for automated production lines.

[0028] It integrates a high-efficiency, non-interference automatic solder pushing mechanism, realizing online and efficient solder dross cleaning. Under the action of the driving component, the pusher plate can automatically extend into the solder pot, smoothly push the floating solder dross to the overflow port and fall into the collection box. The entire cleaning process does not require machine shutdown and does not interfere with the heating and guide belt mechanism in space, ensuring the continuity and efficiency of the production process, while improving the working environment.

[0029] The overall structure is highly integrated and modular, making maintenance convenient and highly adaptable. Through the transmission design of sliding arms and lifting seats, the entire combination seat module can achieve rapid lifting and opening and closing, which not only facilitates initial tape loading and maintenance, but also flexibly adapts to the tinning requirements of different diameters or types of solder strips, demonstrating good process adaptability and scalability. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall first structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the overall second structure of the present invention;

[0032] Figure 3This is a schematic diagram of the overall third structure of the present invention;

[0033] Figure 4 This is a first sectional view of the present invention;

[0034] Figure 5 This is a second sectional view of the present invention;

[0035] Figure 6 This is the third sectional view of the present invention.

[0036] Legend:

[0037] 1. Tin pot; 2. Side plate; 3. Guide wheel; 4. Ceramic guide seat; 5. U-shaped guide groove; 6. Side groove; 7. Sliding arm; 8. Sealing seat; 9. Combination seat; 10. Heating rod; 11. Heat-conducting seat; 12. Air chamber; 13. Air hole; 14. Air supply pipe; 15. Overflow port; 16. Collection box; 17. Swing arm; 18. Fixed column; 19. Insertion hole; 20. Limit bolt; 21. First motor; 22. Column; 23. Transmission box; 24. Second motor; 25. First one-way threaded rod; 26. Lifting seat; 27. Sliding groove; 28. Third motor; 29. ​​Two-way threaded rod; 30. Inner groove; 31. Second one-way threaded rod; 32. Fourth motor; 33. Sliding block; 34. Mounting bracket; 35. Pusher plate; 36. Fifth motor. Detailed Implementation

[0038] 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.

[0039] Specific implementation examples are given below.

[0040] See Figures 1-6A photovoltaic soldering ribbon tinning device includes a solder pot 1, a side plate 2 mounted on the top of the solder pot 1, a guide wheel 3 and an auxiliary feeding mechanism mounted on the side plate 2, the auxiliary feeding mechanism including a first motor 21 mounted on the side plate 2, a swing arm 17 mounted on the output end of the first motor 21, a fixing post 18 mounted on the end of the swing arm 17, an insertion hole 19 opened on the fixing post 18, and a limit bolt 20 mounted on the end of the fixing post 18, the wheel groove, U-shaped guide groove 5 and the insertion hole 19 are in the same plane, and the auxiliary feeding mechanism drives the swing arm 17 through the first motor 21. Combined with the fixing column 18 with limit bolt 20, semi-automatic guiding and feeding of photovoltaic welding strips is realized. The operator only needs to insert the head of the welding strip into the insertion hole 19 and lock it, and the equipment can automatically and accurately guide it through the U-shaped guide groove 5 of the guide wheel 3 and the ceramic guide seat 4. This design greatly simplifies the tedious manual threading process, which not only significantly improves the efficiency of line changing and reduces the skill requirements and labor intensity of operators, but also effectively avoids the risk of burns caused by manual operation near the high temperature tin pot 1, providing key support for automated continuous production.

[0041] A ceramic guide seat 4 is installed inside the tin pot 1. A U-shaped guide groove 5 is opened on the outer side of the ceramic guide seat 4. Sliding arms 7 are installed on both sides of the tin pot 1. Side grooves 6 for the sliding arms 7 to move up and down are opened on the side plate 2. A semi-circular sealing seat 8 is installed at the top of the sliding arm 7. A semi-circular combination seat 9 is installed at the bottom of the sealing seat 8. Several heating rods 10 are vertically installed inside the combination seat 9. A heat-conducting seat 11 is embedded in the inner side of the combination seat 9. An air cavity 12 is opened inside the bottom end of the combination seat 9, and the air cavity 12 is connected to an air hole 13 opened on the inner side of the bottom of the combination seat 9. The air chamber 12 is connected to the sliding arm 7 via the air supply pipe 14. Two columns 22 are symmetrically installed on the bottom side of the tin pot 1, and a transmission box 23 is installed at the bottom of the two columns 22. The input end of the transmission box 23 is connected to the output end of the second motor 24. The two output ends of the transmission box 23 are located inside the columns 22 and are equipped with first one-way threaded rods 25. The two first one-way threaded rods 25 are respectively threaded to the two sides of the middle part of the lifting seat 26. The bottom sides of both ends of the lifting seat 26 are provided with sliding grooves 27. A third motor 28 is installed at the end of the lifting seat 26. A second one-way threaded rod 31 is installed at the output end. The two ends of the second one-way threaded rod 31 are located in the slide groove 27 with opposite threads, and the two ends of the second one-way threaded rod 31 are respectively threaded to two slide arms 7. Wires are installed in the sealing seat 8 and the slide arms 7, and the wires are connected to the heating rod 10 and the external power supply. An air groove is opened in the slide arm 7, and the air groove is connected to the air supply pipe 14. The combined system consists of the slide arm 7, sealing seat 8, combination seat 9, heating rod 10, heat conduction seat 11 and air cavity 12. The two semi-circular combination seats 9 can be closed to form The heating chamber surrounding the solder strip has a heating rod 10 inside that, through a heat-conducting seat 11 with high thermal conductivity, can precisely and locally enhance the heating and heat preservation of the molten solder flowing through this critical area. This effectively solves the problem of local solidification of molten solder at the outlet due to heat dissipation, thereby ensuring that the solder strip has a uniform tin coating thickness and a smooth surface. At the same time, the inert gas introduced into the air chamber 12 overflows evenly from the bottom air hole 13, forming a protective layer on the surface of the molten solder. This inhibits the formation of tin oxide dross from the source, which not only improves the purity of the tin coating but also reduces raw material loss.

[0042] The lifting mechanism, consisting of the second motor 24, transmission box 23, and first one-way threaded rod 25, allows for overall adjustment of the immersion depth of the combined seat 9 module to adapt to different process requirements. Meanwhile, the opening and closing mechanism, driven by the third motor 28 and bidirectional threaded rod 29, precisely controls the synchronous opposite or forward movement of the two sliding arms 7, enabling rapid and smooth closing and separation of the combined seat 9. This design makes maintenance, cleaning, and initial tape threading exceptionally convenient, while also providing the device with strong process flexibility to adapt to different specifications of welding strips.

[0043] The solder pot 1 has an overflow port 15 at one end and a collection box 16 installed at the other end. A solder pushing mechanism is slidably mounted on the solder pot 1. The solder pushing mechanism includes inner grooves 30 on both sides of the top of the solder pot 1. The side plate 2 has a rack groove adapted to the mounting bracket 34. A fourth motor 32 is symmetrically mounted at the end of the solder pot 1. The output end of the fourth motor 32 is located in the inner groove 30 and a second one-way threaded rod 31 is installed. The second one-way threaded rod 31 is threadedly connected to the slider 33. A mounting bracket 34 is mounted on the slider 33, and a pusher plate 35 is rotatably mounted between the two mounting brackets 34. One of the mounting brackets 34 is equipped with a pusher plate 35. Equipped with a fifth motor 36, the output end of which is mounted with a rotating shaft, which is fixedly connected to the pusher plate 35. The tin pushing mechanism drives the slider 33 to move along the inner groove 30 via the fourth motor 32, and the fifth motor 36 controls the flipping of the pusher plate 35. This design realizes the function of online and automatic cleaning of tin oxide dross on the surface of the molten tin. The pusher plate 35 can accurately extend into the tin pot 1, push the dross towards the overflow port 15 and fall into the collection box 16. After completion, it can flip and reset. The whole process does not require manual intervention, ensuring the continuity of production, greatly improving production efficiency, and maintaining the cleanliness of the working environment.

[0044] Working principle: The second motor 24 drives the transmission box 23, which in turn drives the first one-way threaded rod 25 to rotate, thereby driving the lifting seat 26 to rise and fall, thus realizing the lifting of the sliding arm 7, sealing seat 8, and combination seat 9. The third motor 28 drives the bidirectional threaded rod 29 to rotate, thereby driving the sliding arm 7 with threaded connection to move. The two sliding arms 7 move in opposite directions at the same speed, realizing the separation and combination of the combination seat 9. Before processing, the combination seat 9 is in a separated state. The photovoltaic welding strip is inserted into the insertion hole 19 through the guide wheel 3 and fixed by the limit bolt 20. At this time, the first motor 21 drives the swing arm 17 to rotate, thereby driving the photovoltaic welding strip to pass through the bottom of the ceramic guide seat 4 and between the two combination seats 9. Then, the two combination seats 9 combine to cover the outside of the photovoltaic welding strip. After the photovoltaic welding strip is removed from the fixed column 18, it passes through the mold. Under the guidance of the guide wheel 3 and the ceramic guide seat 4, the photovoltaic welding strip passes through the molten solder in the solder pot 1 to complete the tinning work. When the photovoltaic welding strip passes between the two combination seats 9, the heating rod 10 in the combination seat 9 is activated. During operation, the heat conduction seat 11 continuously heats the molten solder in the two assembly seats 9, preventing the surface of the molten solder in the assembly seats 9 from solidifying. At the same time, nitrogen gas is continuously introduced into the air chamber 12 of the assembly seat 9 through the air groove of the sliding arm 7 and the air supply pipe 14, and overflows from the bottom of the assembly seat 9 through the air hole 13, focusing on inhibiting the oxidation of the molten solder between the two assembly seats 9. After the single roll of photovoltaic solder ribbon is tinned, the sliding arm 7 drives the sealing seat 8 and the assembly seat 9 to separate and move upward, and the fifth motor 36 drives the pusher plate. Rotate 35 to partially submerge the molten tin. Then, the fourth motor 32 drives the second one-way threaded rod 31 to rotate, which in turn moves the threaded slider 33 and the mounting bracket 34. At this time, the pusher plate 35 moves, pushing the tin oxide on the molten tin towards the overflow port 15 until the pusher plate 35 reaches the overflow port 15. The tin oxide is collected by the collection box 16. Then, the pusher plate 35 flips and leaves the molten tin, while the slider 33 and the mounting bracket 34 move back to their initial positions.

[0045] 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 solder ribbon tinning device, characterized in that, The device includes a tin pot (1), a side plate (2) mounted on the top of the tin pot (1), a guide wheel (3) and an auxiliary feeding mechanism mounted on the side plate (2), a ceramic guide seat (4) mounted inside the tin pot (1), a U-shaped guide groove (5) opened on the outer side of the ceramic guide seat (4), sliding arms (7) mounted on both sides of the tin pot (1), a side groove (6) for the sliding arms (7) to move up and down opened on the side plate (2), and a semi-circular dense... Sealing seat (8), a semi-circular combination seat (9) is installed at the bottom of the sealing seat (8), a number of heating rods (10) are vertically installed inside the combination seat (9), a heat-conducting seat (11) is embedded in the inner side of the combination seat (9), an air cavity (12) is opened inside the bottom end of the combination seat (9), and the air cavity (12) is connected to an air hole (13) opened inside the bottom of the combination seat (9), and the air cavity (12) is connected to the sliding arm (7) through an air supply pipe (14); The tin pot (1) has an overflow port (15) at one end and a collection box (16) is installed at the other end. A tin-pushing mechanism is slidably installed on the tin pot (1).

2. The photovoltaic solder ribbon tinning device according to claim 1, characterized in that, The auxiliary feeding mechanism includes a first motor (21) mounted on the side plate (2), a swing arm (17) mounted on the output end of the first motor (21), a fixed column (18) mounted on the end of the swing arm (17), an insertion hole (19) opened on the fixed column (18), and a limit bolt (20) mounted on the end of the fixed column (18). The groove, U-shaped guide groove (5), and insertion hole (19) of the guide wheel (3) are on the same plane.

3. The photovoltaic solder ribbon tinning device according to claim 2, characterized in that, Two columns (22) are symmetrically installed on the bottom side of the tin pot (1), and a transmission box (23) is installed at the bottom of the two columns (22). The input end of the transmission box (23) is connected to the output end of the second motor (24).

4. The photovoltaic solder ribbon tinning device according to claim 3, characterized in that, The two output ends of the transmission box (23) are equipped with first one-way threaded rods (25) inside the column (22), and the two first one-way threaded rods (25) are respectively threaded to the two sides of the middle part of the lifting seat (26).

5. A photovoltaic solder ribbon tinning device according to claim 4, characterized in that, The lifting seat (26) has a sliding groove (27) on the bottom side of both ends. A third motor (28) is installed at the end of the lifting seat (26). A second one-way threaded rod (31) is installed at the output end of the third motor (28). The two ends of the second one-way threaded rod (31) are located in the sliding groove (27) with opposite threads, and the two ends of the second one-way threaded rod (31) are respectively threaded to the two sliding arms (7).

6. The photovoltaic solder ribbon tinning device according to claim 5, characterized in that, The sealing seat (8) and the sliding arm (7) are equipped with wires, which are connected to the heating rod (10) and the external power source. The sliding arm (7) has an air groove, which is connected to the air supply pipe (14).

7. A photovoltaic solder ribbon tinning device according to claim 6, characterized in that, The solder pushing mechanism includes inner grooves (30) on both sides of the top of the solder pot (1), and a rack groove adapted to the mounting bracket (34) on the side plate (2). A fourth motor (32) is symmetrically installed at the end of the solder pot (1), and a second one-way threaded rod (31) is installed in the inner groove (30) at the output end of the fourth motor (32).

8. A photovoltaic solder ribbon tinning device according to claim 7, characterized in that, The second one-way threaded rod (31) is threadedly connected to the slider (33), and a mounting bracket (34) is installed on the slider (33), and a pusher plate (35) is rotatably installed between the two mounting brackets (34).

9. A photovoltaic solder ribbon tinning device according to claim 8, characterized in that, A fifth motor (36) is mounted on one of the mounting brackets (34), and a rotating shaft is mounted on the output end of the fifth motor (36), and the rotating shaft is fixedly connected to the push plate (35).

10. The operating method of the photovoltaic solder ribbon tinning device according to claim 9, characterized in that, The specific operational steps of this working method are as follows: Step 1: The second motor (24) works, the transmission box (23) drives the first one-way threaded rod (25) to rotate, and then drives the lifting seat (26) to rise and fall, thereby realizing the lifting of the sliding arm (7), the sealing seat (8) and the combination seat (9). The third motor (28) works to drive the bidirectional threaded rod (29) to rotate, and then drives the sliding arm (7) connected by the thread to move. The two sliding arms (7) move in opposite directions at the same speed. The combination seat (9) is separated and combined through the sliding arm (7). Before processing, the combination seat (9) is in a separated state. The photovoltaic welding strip is inserted into the insertion hole (19) through the guide wheel (3) and fixed by the limit bolt (20). At this time, the first motor (21) works to drive the swing arm (17) to rotate, and then drives the photovoltaic welding strip to pass from the bottom of the ceramic guide seat (4) and between the two combination seats (9). Then the two combination seats (9) are combined and cover the outside of the photovoltaic welding strip. The photovoltaic welding strip is taken off from the fixed column (18) and passed through the mold. Step 2: Under the guidance of the guide wheel (3) and the ceramic guide seat (4), the photovoltaic solder ribbon passes through the molten solder in the solder pot (1) to complete the tin coating work. When the photovoltaic solder ribbon passes between the two combination seats (9), the heating rod (10) in the combination seat (9) works and conducts heat through the heat conduction seat (11) to continuously heat the molten solder in the two combination seats (9) to prevent the molten solder in the combination seat (9) from solidifying. At the same time, nitrogen gas is continuously input into the air chamber (12) of the combination seat (9) through the air groove of the sliding arm (7) and the air supply pipe (14), and overflows from the bottom of the combination seat (9) through the air hole (13) to focus on inhibiting the oxidation of the molten solder between the two combination seats (9). Step 3: After the single roll of photovoltaic soldering tape is tinned, the sliding arm (7) drives the sealing seat (8) and the combination seat (9) to separate and move upward. The fifth motor (36) drives the pusher plate (35) to rotate, and the pusher plate (35) is rotated to a position where it is partially below the surface of the molten tin. Then, the fourth motor (32) drives the second one-way threaded rod (31) to rotate, which in turn drives the threaded slider (33) and the mounting bracket (34) to move. At this time, the pusher plate (35) moves, pushing the tin oxide on the molten tin towards the overflow port (15) until the pusher plate (35) reaches the overflow port (15). The tin oxide is collected by the collection box (16). Then the pusher plate (35) flips and leaves the molten tin, while the slider (33) and the mounting bracket (34) move back to their initial positions.

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