Bus bar combined welding machine

Abstract

The utility model belongs to the technical field of photovoltaic module production, and relates to a bus bar combined welding machine which comprises a rack, an assembly line assembly arranged on the lower portion of the rack, a plurality of YZ moving mechanisms arranged on the upper portion of the rack, and a plurality of hot air welding assemblies and a plurality of electromagnetic welding assemblies which are arranged on the different YZ moving mechanisms respectively. The sum of the number of the hot air welding assemblies and the number of the electromagnetic welding assemblies does not exceed the number of the YZ moving mechanisms. The welding machine can be used for welding a bus bar and a silicon wafer bonding pad and welding the bus bar and a semi-suspended outgoing line at the same time, and is more flexible to use. And electromagnetic welding and thermocompression welding are independently arranged, so that the stroke rhythm is reduced, and the working efficiency is improved. The hot-pressing welding and electromagnetic welding technology has the advantages of being fast in temperature rise, resistant to high temperature and long in service life, and welding spot welding points are firm.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic component production, in particular to a busbar combined welding machine. Background Art

[0002] In the production process of solar panels, the current of the cell is led out by welding the busbar, and then the lead-out electrode is effectively connected to the junction box in series or parallel. The busbar will be arched and pre-welded to the silicon wafer first, and then the whole busbar will be welded to make it fully conductive with the silicon wafer. Some welding positions are supported by silicon wafers and are suitable for hot air welding. Some welding positions are semi-suspended lead wires, which are suitable for electromagnetic welding. However, the welding equipment commonly used currently only uses a single welding method.

[0003] Chinese patent CN111958084A discloses a processing device and method for a solar cell module, including a transport mechanism, a solder paste placement mechanism, a solder strip placement mechanism and a reflow soldering mechanism, wherein the soldering device is selected from at least one of an infrared soldering device, an electromagnetic soldering device and a hot air soldering device, but there is no specific structure.

[0004] Therefore need to design a kind of new device to solve the above problems. Summary of the invention

[0005] The main purpose of the utility model is to provide a busbar combined welding machine, which can simultaneously handle the welding of the busbar and the silicon wafer pad and the welding of the busbar and the semi-suspended lead wire, and is more flexible to use.

[0006] The utility model achieves the above-mentioned purpose through the following technical scheme: a busbar combined welding machine, including a frame, an assembly line assembly arranged at the lower part of the frame, a plurality of YZ moving mechanisms arranged at the upper part of the frame, and a plurality of hot air welding assemblies and a plurality of electromagnetic welding assemblies respectively arranged on different YZ moving mechanisms, and the sum of the number of the hot air welding assemblies and the number of the electromagnetic welding assemblies does not exceed the number of the YZ moving mechanisms.

[0007] Specifically, the assembly line assembly includes an upper assembly line, X-direction lifting and centering mechanisms arranged in pairs on both sides of the upper assembly line in the X direction, Y-direction centering mechanisms arranged in pairs on both sides of the upper assembly line in the Y direction, and a photoelectric sensing switch located in the middle of the upper assembly line.

[0008] Furthermore, a lower assembly line is provided below the upper assembly line.

[0009] Specifically, a pair of Y-direction linear guides are provided in parallel on both sides of the X-direction of the upper part of the frame, and a Y-direction guide rack is provided on one side of each Y-direction linear guide. The YZ moving mechanism includes a moving beam that moves along the Y-direction linear guide, and two travel motors respectively provided at both ends of the moving beam. A motor seat for fixing the travel motor is respectively provided on both sides of the moving beam, and the driving shaft of the travel motor passes through the motor seat and is connected to a travel gear meshing with the Y-direction guide rack.

[0010] Furthermore, a lifting motor is provided in the middle of the movable crossbeam, and a vertical plate for fixing the lifting motor is provided in the middle of the movable crossbeam. The lifting motor drives a vertically arranged screw rod, and the screw rod is equipped with a screw sleeve. One side of the vertical plate is provided with lifting slide rails respectively located on both sides of the screw rod, and the lifting slide rails are equipped with guide sliding blocks. A stop block is respectively provided at the upper and lower ends of the lifting slide rails, and the hot air welding assembly or the electromagnetic welding assembly is fixed to the screw sleeve and the guide sliding block at the same time.

[0011] Furthermore, the hot air welding assembly includes a first mounting plate, a plurality of pressure pins arranged side by side along the X direction on the first mounting plate, and a hot air duct arranged on one side of each pressure pin, the hot air duct corresponds to the pressure pin one by one, and the back side of the first mounting plate is fixed to the screw sleeve and the guide sliding block at the same time.

[0012] Furthermore, the first mounting plate is provided with a first X-direction guide rail and an X-direction connecting axis, the pressing needle is connected to the first X-direction guide rail through a first X-direction slider, the hot air pipe is fixed to the X-direction connecting axis through an angle adjustment clamp, and the outlet of the hot air pipe faces the end of the pressing needle.

[0013] Furthermore, the electromagnetic welding assembly includes a second mounting plate and a plurality of electromagnetic welding heads arranged side by side on the second mounting plate along the X direction, and the back side of the second mounting plate is fixed to the screw sleeve and the guide sliding block at the same time.

[0014] Furthermore, the second mounting plate is provided with a second X-guide rail, the second X-guide rail is provided with a plurality of second X-slide blocks, the electromagnetic welding head is connected to the floating slide block, the second X-guide slide block is provided with a Z-guide rail, an upper stop block located at the upper end of the Z-guide rail and a lower stop block located at the lower end of the Z-guide rail, the floating slide block slides along the Z-guide rail, and a spring assembly is clamped between the floating slide block and the upper stop block.

[0015] Specifically, an outer sealing plate is provided outside the frame.

[0016] The beneficial effects of the technical solution of the utility model are:

[0017] This welding machine can handle the welding of busbars and silicon wafer pads and the welding of busbars and semi-suspended lead wires at the same time, which is more flexible to use. The independent settings of electromagnetic welding and hot pressing welding reduce the stroke and improve work efficiency. Hot pressing welding and electromagnetic welding technology have the characteristics of fast heating, high temperature resistance, long service life, and firm welding points. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of a busbar assembly welding machine according to an embodiment of the invention with part of the outer sealing plate removed;

[0019] Figure 2 for Figure 1 A partial enlarged view of position A in the middle;

[0020] Figure 3 is a three-dimensional diagram of the assembly line components;

[0021] Figure 4 It is a three-dimensional diagram of the YZ moving mechanism;

[0022] Figure 5 is a three-dimensional diagram of a hot air welding assembly;

[0023] Figure 6 for Figure 5 A partial enlarged view of position B in the middle;

[0024] Figure 7 is a three-dimensional diagram of an electromagnetic welding assembly;

[0025] Figure 8 for Figure 7 A partial enlarged view of the C position in the middle.

[0026] The numbers in the figure represent:

[0027] 1-frame, 11-Y-axis linear guide rail, 12-Y-axis guide rack, 13-external sealing plate;

[0028] 2- assembly line assembly, 21- upper assembly line, 22- X-axis lifting and centering assembly, 23- Y-axis centering assembly, 24- lower assembly line, 25- photoelectric induction switch;

[0029] 3-YZ moving mechanism, 31-moving beam, 311-motor seat, 312-vertical plate, 32-travel motor, 321-travel gear, 33-lifting motor, 331-screw, 332-screw sleeve, 34-lifting slide rail, 341-stopper, 35-guide slide block;

[0030] 4-hot air welding assembly, 41-first mounting plate, 411-first X-direction guide rail, 412-X-direction connecting shaft, 42-pressing needle, 421-first X-direction slider, 43-hot air pipe, 431-angle adjustment fixture;

[0031] 5-electromagnetic welding assembly, 51-second mounting plate, 511-second X-direction guide rail, 52-electromagnetic welding head, 53-second X-direction slider, 531-Z guide rail, 532-upper stopper, 533-lower stopper, 54-floating slider, 55-spring assembly. DETAILED DESCRIPTION

[0032] The utility model is further described in detail below in conjunction with specific embodiments.

[0033] Example:

[0034] like Figure 1 As shown, a busbar combined welding machine 1 of the utility model includes a frame 11, an assembly line assembly 2 arranged at the lower part of the frame 11, four YZ moving mechanisms 3 arranged at the upper part of the frame 11, and three hot air welding assemblies 4 and an electromagnetic welding assembly 5 respectively arranged on different YZ moving mechanisms 3.

[0035] The hot air welding assembly 4 uses the hot air welding method to weld the bus bar to the pad, and the electromagnetic welding assembly 5 uses the electromagnetic welding method to weld the bus bar to the lead wire. Both the hot air welding assembly 4 and the electromagnetic welding assembly 5 are modular integral structures. If the number of YZ moving mechanisms 3 allows, the hot air welding assembly 4 or the electromagnetic welding assembly 5 can be selectively installed. Therefore, under the premise that the sum of the number of hot air welding assemblies 4 and the number of electromagnetic welding assemblies 5 does not exceed the number of YZ moving mechanisms 3, the number of the two can be flexibly increased or decreased as needed. The independent setting of electromagnetic welding and hot pressure welding reduces the stroke beat and improves work efficiency.

[0036] like Figure 3 As shown, the assembly line assembly 2 includes an upper assembly line 21, X-direction lifting and centering mechanisms 22 arranged in pairs on both sides of the upper assembly line 21 in the X direction, a Y-direction centering mechanism 23 arranged in pairs on both sides of the upper assembly line 21 in the Y direction, a photoelectric sensing switch 24 located in the middle of the upper assembly line 21, and a lower assembly line 25 located below the upper assembly line 21.

[0037] Because the hot air welding assembly 4 and the electromagnetic welding assembly 5 are both on the upper part of the frame 11, the solar module must be moved in and out through the upper part of the upper assembly line 21, so that welding can be completed. When the solar module moves, the X-axis lifting and centering mechanism 22 must be retracted below the conveying surface to avoid interfering with the movement. After the solar module reaches the detection area of ​​the photoelectric sensor switch 24, the X-axis lifting and centering mechanism 22 must rise upward, and then move from the front and back directions of the conveying direction to the middle, producing an X-axis centering effect, and the Y-axis centering mechanism 23 moves from the left and right directions of the conveying direction to the middle, producing a Y-axis centering effect, so that the position of the solar module can be completed before welding, which is convenient for the subsequent welding operation. The centering positioning has high accuracy, and the photoelectric sensor switch 24 is positioned, which saves costs and reduces space utilization. The solar module that has completed all processes returns to the feeding position from the lower assembly line 25 so that workers can carry it in the same position.

[0038] like Figure 2 and Figure 4 As shown, a pair of Y-direction linear guide rails 11 are arranged in parallel on both sides of the X-direction of the upper part of the frame 1, and a Y-direction guide rack 12 is arranged on one side of each Y-direction linear guide rail 11. The YZ moving mechanism 3 includes a moving beam 31 moving along the Y-direction linear guide rail 11, two travel motors 32 arranged at both ends of the moving beam 31, and a lifting motor 33 arranged in the middle of the moving beam 31. A motor seat 311 for fixing the travel motor 32 is arranged on one side of the moving beam 31, and the driving shaft of the travel motor 32 passes through the motor seat 311 and is connected to a A walking gear 321 meshes with the Y-direction guide rack 12, and a vertical plate 311 for fixing a lifting motor 33 is provided in the middle of the moving crossbeam 31. The lifting motor 33 drives a vertically arranged screw rod 331, and a screw sleeve 331 is matched on the screw rod 331. One side of the vertical plate 311 is provided with lifting rails 34 located on both sides of the screw rod 331 respectively, and a guide sliding block 35 is matched on the lifting rails 34. A stopper 341 is respectively provided at the upper and lower ends of the lifting rails 34. The hot air welding assembly 4 or the electromagnetic welding assembly 5 is fixed to the screw sleeve 331 and the guide sliding block 35 at the same time.

[0039] The travel motor 32 moves the moving beam 31 along the Y direction through the cooperation of the travel gear 321 and the Y-direction guide rack 12, and the Y-direction linear guide 11 has a limiting effect on the moving direction of the moving beam 31. The lifting motor 33 enables the hot air welding assembly 4 or the electromagnetic welding assembly 5 to be lifted and lowered as a whole along the Z direction through the cooperation of the screw 331 and the screw sleeve 332. The lifting slide 34 and the guide slider 35 play a role in limiting the direction of the lifting of the two, and the block 341 can limit the lifting range of the guide slider 35 to prevent it from leaving the lifting slide 34. All YZ moving mechanisms 3 share two Y-direction linear guides 11 and Y-direction guide racks 12. Because the busbars here all extend along the X direction, the hot air welding assembly 4 and the electromagnetic welding assembly 5 are also respectively arranged along the X direction, so in order to match the positions of the two with the busbars, it is necessary to control the Y-direction positions of the hot air welding assembly 4 and the electromagnetic welding assembly 5 through the travel motor 32. During the Y-axis movement, the lifting motor 33 controls the hot air welding assembly 4 or the electromagnetic welding assembly 5 to rise to avoid knocking down the bus bar, and then allows both to descend when welding.

[0040] like Figure 6 and Figure 7 As shown, the hot air welding assembly 4 includes a first mounting plate 41, a plurality of pressing pins 42 arranged side by side on the first mounting plate 41 along the X direction, and a hot air pipe 43 arranged on one side of each pressing pin 42, and the hot air pipe 43 corresponds to the pressing pin 42 one by one. The first mounting plate 41 is provided with a first X-direction guide rail 411 and an X-direction connecting shaft 412, the pressing pin 42 is connected to the first X-direction guide rail 411 through a first X-direction slider 421, the hot air pipe 43 is fixed to the X-direction connecting shaft 412 through an angle adjustment fixture 431, and the outlet of the hot air pipe 43 faces the end of the pressing pin 42. The back of the first mounting plate 41 is fixed to the screw sleeve 331 and the guide slider 35 at the same time.

[0041] Hot air welding is to first use a pressure needle 42 to gently press the bus bar onto the pad of the silicon wafer, and then use the compressed hot air blown out by the hot air pipe 43 to melt the bus bar at the pressed position and weld it to the pad. Because the bus bar is a linear structure and the pads are spaced apart on the silicon wafer, each pressure needle 42 and hot air pipe 43 must be adjusted to face a pad. The pressure needle 42 can adjust the position in the X direction along the first X-direction guide 411, and the hot air pipe 43 can also adjust the position and angle in the X direction along the X-direction connecting axis 412, so that the pressure needle 42 and the hot air pipe 43 can flexibly adapt to the position of the pad.

[0042] like Figure 7 and Figure 8As shown, the electromagnetic welding assembly 5 includes a second mounting plate 51 and a plurality of electromagnetic welding heads 52 arranged side by side on the second mounting plate 51 along the X direction, a second X-direction guide rail 511 is provided on the second mounting plate 51, a plurality of second X-direction sliders 53 are provided on the second X-direction guide rail 511, the electromagnetic welding heads 52 are connected to a floating slider 54, a Z-direction guide rail 531, an upper stopper 532 located at the upper end of the Z-direction guide rail 531, and a lower stopper 533 located at the lower end of the Z-direction guide rail 531 are provided on the second X-direction slider 53, the floating slider 54 slides along the Z-direction guide rail 531, and a spring assembly 55 is clamped between the floating slider 54 and the upper stopper 532. The back side of the second mounting plate 51 is fixed to the screw sleeve 331 and the guide slider 35 at the same time.

[0043] The electromagnetic welding head 52 generates eddy currents in the lead wire and the bus bar through alternating current, which then generates heat for welding. The lead wire is in a semi-suspended state, and there is no silicon chip support at the rear, so the electromagnetic welding head 52 can only stick to the bus bar, and leave a space for expansion and contraction through the Z-guide rail 531, and use the elastic force of the spring assembly 55 to keep it pressed tightly, and then weld. The spring assembly 55 plays a buffering role to prevent the lead wire from being broken due to excessive downward pressure.

[0044] Therefore, this welding machine can handle the welding of busbars and silicon wafer pads and the welding of busbars and semi-suspended lead wires at the same time, which is more flexible to use. Hot pressing welding and electromagnetic welding technology have the characteristics of fast heating, high temperature resistance, long service life, and firm welding points.

[0045] like Figure 1 As shown, an outer sealing plate 13 is provided outside the frame 1.

[0046] The outer sealing plate 13 can protect the internal structure and prevent dust from falling onto the solar module during welding.

[0047] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A busbar combined welding machine, characterized in that: It includes a frame, an assembly line component arranged at the bottom of the frame, a plurality of YZ moving mechanisms arranged at the top of the frame, and a plurality of hot air welding components and a plurality of electromagnetic welding components respectively arranged on different YZ moving mechanisms. The total number of the hot air welding components and the number of the electromagnetic welding components does not exceed the number of the YZ moving mechanisms.

2. The busbar combined welding machine according to claim 1, characterized in that: The assembly line assembly includes an upper assembly line, X-direction lifting and centering mechanisms arranged in pairs on both sides of the upper assembly line in the X direction, Y-direction centering mechanisms arranged in pairs on both sides of the upper assembly line in the Y direction, and a photoelectric sensing switch located in the middle of the upper assembly line.

3. The busbar combined welding machine according to claim 2, characterized in that: A lower assembly line is arranged below the upper assembly line.

4. The busbar combined welding machine according to claim 1, characterized in that: A pair of Y-direction linear guides are arranged in parallel on both sides of the X-direction of the upper part of the frame, and a Y-direction guide rack is arranged on one side of each Y-direction linear guide. The YZ moving mechanism includes a moving beam moving along the Y-direction linear guide, and two travel motors respectively arranged at both ends of the moving beam. A motor seat for fixing the travel motor is respectively arranged on both sides of the moving beam, and the driving shaft of the travel motor passes through the motor seat and is connected to a travel gear meshing with the Y-direction guide rack.

5. The busbar combined welding machine according to claim 4, characterized in that: A lifting motor is provided in the middle of the movable crossbeam, and a vertical plate for fixing the lifting motor is provided in the middle of the movable crossbeam. The lifting motor drives a vertically arranged screw rod, and the screw rod is equipped with a screw sleeve. One side of the vertical plate is provided with lifting rails located on both sides of the screw rod, respectively, and the lifting rails are equipped with guide sliding blocks. A stop block is respectively provided at the upper and lower ends of the lifting rails, and the hot air welding assembly or the electromagnetic welding assembly is fixed to the screw sleeve and the guide sliding block at the same time.

6. The busbar combined welding machine according to claim 5, characterized in that: The hot air welding assembly includes a first mounting plate, a plurality of pressure pins arranged side by side on the first mounting plate along the X direction, and a hot air pipe arranged on one side of each pressure pin, the hot air pipe corresponds to the pressure pin one by one, and the back side of the first mounting plate is fixed to the screw sleeve and the guide sliding block at the same time.

7. The busbar combined welding machine according to claim 6, characterized in that: The first mounting plate is provided with a first X-direction guide rail and an X-direction connecting shaft, the pressing needle is connected to the first X-direction guide rail via a first X-direction slider, the hot air pipe is fixed to the X-direction connecting shaft via an angle adjustment clamp, and the outlet of the hot air pipe faces the end of the pressing needle.

8. The busbar combined welding machine according to claim 5, characterized in that: The electromagnetic welding assembly comprises a second mounting plate and a plurality of electromagnetic welding heads arranged side by side on the second mounting plate along the X direction, and the back side of the second mounting plate is fixed to the screw sleeve and the guide sliding block at the same time.

9. The busbar combined welding machine according to claim 8, characterized in that: A second X-guide rail is provided on the second mounting plate, a plurality of second X-guide sliders are provided on the second X-guide rail, the electromagnetic welding head is connected to a floating slider, a Z-guide rail, an upper stopper located at the upper end of the Z-guide rail and a lower stopper located at the lower end of the Z-guide rail are provided on the second X-guide slider, the floating slider slides along the Z-guide rail, and a spring assembly is clamped between the floating slider and the upper stopper.

10. The busbar combined welding machine according to claim 1, characterized in that: An outer sealing plate is arranged outside the frame.

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