Junction box lead laser welding equipment

Abstract

The utility model belongs to the technical field of photovoltaic module production, and relates to junction box lead laser welding equipment. Comprising a rack, an assembly line assembly arranged on the lower portion of the rack, a first Y-direction moving mechanism and a second Y-direction moving mechanism which are arranged on the upper portion of the rack, three tin pressing units driven by the first Y-direction moving mechanism to move and a laser welding unit driven by the second Y-direction moving mechanism to move, and three visual detection assemblies are arranged on the top of the rack. The visual detection assembly comprises a light-emitting plate giving light downwards and a detection lens arranged above the light-emitting plate, a light-transmitting hole is formed in the middle of the light-emitting plate, and the detection lens detects the laser welding position through the light-transmitting hole. According to the welding machine, the visual inspection assembly can be used for accurately identifying the leads at the welding position of the junction box, so that the driving tin pressing unit is controlled to press the leads together in advance, then one laser welding unit is used for sequentially completing welding, welding is safe, quality is good, the speed is high, and cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic component production, in particular to a junction box lead laser welding device. Background Art

[0002] In the production process of solar panels, the current of the cell must be led out through welding busbars, and then the led-out electrodes are effectively connected to the junction box in series or parallel. In the process of exploring various speed-up methods, the use of laser welding has become one of the feasible directions. The leads of the junction box on the solar panel need to be welded. Currently, most of the methods used in the market are hot pressing welding, which has high structural cost, large loss, slow heating, low welding efficiency, high maintenance cost, and often produces uneven welding quality.

[0003] Therefore need to design a kind of new device to solve the above problems. Summary of the invention

[0004] The main purpose of the utility model is to provide a junction box lead laser welding device, which can clearly identify the leads at the welding position of the junction box, so that the leads can be pressed in advance by a tin pressing unit, and then laser welding is performed, so that the welding is safe, of good quality, fast and cost-saving.

[0005] The utility model achieves the above-mentioned purpose through the following technical scheme: a junction box lead laser welding device, including a frame, an assembly line component arranged at the bottom of the frame, a first Y-direction moving mechanism and a second Y-direction moving mechanism arranged at the top of the frame, three tin pressing units driven to move by the first Y-direction moving mechanism and a laser welding unit driven to move by the second Y-direction moving mechanism, three visual detection components are arranged on the top of the frame, the visual detection components include a light-emitting board that provides light downward and a detection lens arranged above the light-emitting board, a light-transmitting hole is arranged in the middle of the light-emitting board, and the detection lens detects the laser welding position through the light-transmitting hole.

[0006] Specifically, the assembly line assembly includes an X-axis assembly line, X-axis lifting and centering mechanisms arranged in pairs on both sides of the X-axis assembly line in the X direction, Y-axis centering mechanisms arranged in pairs on both sides of the Y direction of the X-axis assembly line, and a code scanning mechanism located in the middle of the X-axis assembly line.

[0007] 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 first Y-direction moving mechanism and the second Y-direction moving mechanism both include a moving beam that moves along the Y-direction linear guide, and two Y-direction travel motors respectively provided at both ends of the moving beam. A motor seat for fixing the Y-direction travel motor is provided on both sides of the moving beam, and a driving shaft of the Y-direction travel motor passes through the motor seat and is connected to a Y-direction travel gear meshing with the Y-direction guide rack. A Y-direction slider cooperating with the Y-direction linear guide is provided at the bottom of the motor seat.

[0008] Specifically, the tin pressing unit includes a tin pressing mounting frame, a first X-direction walking mechanism arranged on the upper part of the tin pressing mounting frame, a Y-direction moving mechanism arranged on the lower part of the tin pressing mounting frame, and a Z-direction moving mechanism driven to move by the Y-direction moving mechanism. The Z-direction moving mechanism drives the tin pressing assembly to rise and fall, and the middle part of the tin pressing mounting frame is passed through by the moving beam. The first X-direction walking mechanism drives the tin pressing mounting frame to move along the X direction on the moving beam.

[0009] Furthermore, the tin pressing assembly includes a tin pressing mounting plate, a fixed pressure head fixedly arranged at the lower part of the tin pressing mounting plate, and two movable pressure head modules arranged on both sides of the upper part of the tin pressing mounting plate, the movable pressure head module includes a Z-axis lifting cylinder, an X-axis sliding cylinder driven by the Z-axis lifting cylinder, and a movable pressure head driven by the X-axis sliding cylinder, and the end of the movable pressure head is close to the fixed pressure head.

[0010] Furthermore, the tinning mounting plate is provided with a displacement sensor for detecting the relative height of the X-axis sliding cylinder.

[0011] Specifically, the laser welding assembly includes a welding mounting frame, a second X-axis walking mechanism arranged on the welding mounting frame, a lifting module arranged on one side of the welding mounting frame, and a galvanometer driven to rise and fall by the lifting module.

[0012] Furthermore, a detection camera for detecting the welding position downward is provided on one side of the galvanometer, a light source for illuminating the welding range and a dust removal mechanism for absorbing welding waste are provided at the lower part, the dust removal mechanism is located on one side of the light source and draws air obliquely downward, a laser generator is provided on the upper part of the frame, and the laser generator guides the laser into the galvanometer through an optical fiber.

[0013] The beneficial effects of the technical solution of the utility model are:

[0014] This welding machine can use the visual detection component to accurately identify the leads at the welding position of the junction box, thereby controlling the driving tin pressing unit to press the leads together in advance, and then using a laser welding unit to complete the welding in sequence. The welding is safe, high-quality, fast and cost-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of a junction box lead laser welding device in an embodiment with part of the housing removed;

[0016] Figure 2 for Figure 1 A partial enlarged view of position A in the middle;

[0017] Figure 3 This is a front view of the core part of the junction box lead laser welding equipment of the embodiment;

[0018] Figure 4 is a three-dimensional diagram of the assembly line components;

[0019] Figure 5 It is a three-dimensional diagram of the tin pressing unit;

[0020] Figure 6 It is the right side view of the tin pressing component;

[0021] Figure 7 A three-dimensional diagram of the laser welding unit.

[0022] The numbers in the figure represent:

[0023] 1-frame, 11-Y-axis linear guide rail, 12-Y-axis guide rack;

[0024] 2- assembly line assembly, 21- X-axis assembly line, 22- X-axis lifting and centering assembly, 23- Y-axis centering assembly, 24- code scanning mechanism;

[0025] 3a-first Y-direction moving mechanism, 3b-second Y-direction moving mechanism, 31-moving beam, 311-motor seat, 312-Y-direction slider, 32-Y-direction travel motor;

[0026] 4-tin pressing unit, 41-tin pressing mounting frame, 42-first X-axis walking mechanism, 43-Y-axis moving mechanism, 44-Z-axis moving mechanism, 45-tin pressing assembly, 451-tin pressing mounting plate, 452-fixed pressure head, 453-movable pressure head module, 4531-Z-axis lifting cylinder, 4532-X-axis sliding cylinder, 4533-movable pressure head, 454-displacement sensor;

[0027] 5-laser welding unit, 51-welding mounting frame, 52-second X-axis walking mechanism, 53-lifting module, 54-galvanometer, 55-detection camera, 56-light source, 57-dust removal mechanism;

[0028] 6- visual detection component, 61- light-emitting board, 611- light-transmitting hole, 62- detection lens;

[0029] 7-Laser generator. DETAILED DESCRIPTION

[0030] The utility model is further described in detail below in conjunction with specific embodiments.

[0031] Example:

[0032] like Figure 1 and Figure 2 As shown, a junction box lead laser welding device of the utility model includes a frame 1, an assembly line component 2 arranged at the lower part of the frame 1, a first Y-axis moving mechanism 3a and a second Y-axis moving mechanism 3b arranged at the upper part of the frame 2, three tin pressing units 4 driven to move by the first Y-axis moving mechanism 3a, and a laser welding unit 5 driven to move by the second Y-axis moving mechanism 3b, three visual detection components 6 are arranged on the top of the frame 1, the visual detection component 6 includes a light-emitting board 61 that provides light downward and a detection lens 62 arranged above the light-emitting board 61, a light-transmitting hole 611 is arranged in the middle of the light-transmitting hole 611, and the detection lens 62 detects the laser welding position through the light-transmitting hole 611.

[0033] The solar panel targeted by this device has three junction boxes, so the tinning unit 4 and the visual inspection component 6 must be three groups, respectively for the leads on the same junction box. Because the laser welding unit 5 is more expensive, only one is used, and the welding of three positions is completed in sequence. The welding is safe, of good quality, fast and cost-saving.

[0034] like Figure 3 As shown, the assembly line assembly 2 includes an X-axis assembly line 21, an X-axis lifting and centering mechanism 22 arranged in pairs on both sides of the X-axis assembly line 21 in the X direction, a Y-axis centering mechanism 23 arranged in pairs on both sides of the X-axis assembly line 21 in the Y direction, and a code scanning mechanism 24 located in the middle of the X-axis assembly line 21.

[0035] The solar panels must be moved in and out through the X-axis assembly line 21 so that welding can be completed. When the solar panels are moving, the X-axis lifting and centering mechanism 22 must be retracted below the conveying surface to avoid interfering with the movement. 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. 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. In this way, the position of the solar panel can be completed before welding, which is convenient for the subsequent welding operation. The centering positioning has high accuracy, and the code scanning mechanism 24 is used to read and record the information of each solar panel.

[0036] like Figure 2and Figure 4 As shown, a pair of Y-direction linear guides 11 are provided 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 provided on one side of each Y-direction linear guide 11. The Y-direction moving mechanism 3 includes a moving beam 31 moving along the Y-direction linear guide 11 and two Y-direction travel motors 32 provided at both ends of the moving beam 31, a motor seat 311 for fixing the travel motor 32 is provided on one side of the moving beam 31, a driving shaft of the travel motor 32 passes through the motor seat 311 and is connected to a Y-direction travel gear (not shown) meshing with the Y-direction guide rack 12, and a Y-direction slider 312 cooperating with the Y-direction linear guide 11 is provided at the bottom of the motor seat 311.

[0037] The Y-direction travel motor 32 moves the moving beam 31 along the Y-direction through the cooperation of the Y-direction travel gear and the Y-direction guide rack 12, and the Y-direction linear guide 11 allows the moving beam 31 to slide only along the Y-direction through the Y-direction slider 312. The first Y-direction moving mechanism 3a and the second Y-direction moving mechanism 3b share two Y-direction linear guides 11 and the Y-direction guide rack 12. The first Y-direction moving mechanism 3a is used to realize the long-distance Y-direction movement of the tinning unit 4, and the second Y-direction moving mechanism 3b is used to realize the long-distance Y-direction movement of the laser welding unit 5.

[0038] like Figure 5 As shown, the tin pressing unit 4 includes a tin pressing mounting frame 41, a first X-direction walking mechanism 42 arranged on the upper part of the tin pressing mounting frame 41, a Y-direction moving mechanism 43 arranged on the lower part of the tin pressing mounting frame 41, and a Z-direction moving mechanism 44 driven by the Y-direction moving mechanism 42. The Z-direction moving mechanism 44 drives the tin pressing assembly 45 to rise and fall. The middle part of the tin pressing mounting frame 41 is passed through by the moving beam 31, and the first X-direction walking mechanism 32 drives the tin pressing mounting frame 41 to move along the X direction on the moving beam 31.

[0039] Such an arrangement of the first X-axis walking mechanism 42, the Y-axis moving mechanism 43 and the Z-axis moving mechanism 44 is relatively compact. The above three mechanisms are mainly used to allow the tin pressing assembly 45 to freely adjust the position of the XYZ three-coordinates. Under the guidance of the detection lens 62, the tin pressing assembly 45 can find the lead in advance to complete the positioning of the lead end.

[0040] like Figure 6 As shown, the tin pressing assembly 45 includes a tin pressing mounting plate 41, a fixed pressure head 452 fixedly arranged at the lower part of the tin pressing mounting plate 41, and two movable pressure head modules 453 arranged at both sides of the upper part of the tin pressing mounting plate 451. The movable pressure head module 453 includes a Z-axis lifting cylinder 4531, an X-axis sliding cylinder 4532 driven by the Z-axis lifting cylinder 4531, and a movable pressure head 4533 driven by the X-axis sliding cylinder 4532. The end of the movable pressure head 4533 is close to the fixed pressure head 452.

[0041] Regardless of the type of junction box, the fixed pressure head 452 can be used as an inner support, and the two movable pressure heads 4533 can be used as external supports. The Z-axis lifting cylinder 4531 and the X-axis sliding cylinder 4532 control the position of the movable pressure head 4533 in the XZ direction, and cooperate with the fixed pressure head 452 to clamp the lead wire, so that the ends of the two leads are overlapped, so that the leads can be welded by laser.

[0042] like Figure 7 As shown, the laser welding assembly 5 includes a welding mounting frame 51, a second X-axis travel mechanism 52 arranged on the welding mounting frame 51, a lifting module 53 arranged on one side of the welding mounting frame 51, and a galvanometer 54 driven to rise and fall by the lifting module 53. A detection camera 55 for downward detection of the welding position is arranged on one side of the galvanometer 54, a light source 56 for illuminating the welding range and a dust removal mechanism 57 for sucking welding waste are arranged at the lower part, and the dust removal mechanism 57 is located at one side of the light source 56 and sucks air obliquely downward. A laser generator 7 is arranged on the upper part of the frame 11, and the laser generator 7 guides the laser into the galvanometer 54 through an optical fiber (not shown).

[0043] The galvanometer 54 can move in three directions, XYZ, by means of the second Y-direction moving mechanism 3a, the second X-direction walking mechanism 52 and the Z-direction moving mechanism 44, and then adapt to the welding position from a larger distance scale. The position of the laser generator 7 is fixed, and the optical fiber can be arbitrarily deformed with the position change of the galvanometer 54, so as to ensure that the laser passes through the galvanometer 54 for welding. Under the illumination of the light source 56 inside the galvanometer 54, the detection camera 55 accurately judges the welding path. There is a polarizer and a motor for controlling the reflection direction of the polarizer inside the galvanometer 54, so the direction of the laser can be adjusted by rotating the polarizer to complete the welding when the welding path is determined. The dust removal system 57 can absorb and discharge the waste smoke and waste generated during laser welding to ensure product quality. The laser generator 7 is only started when welding. When the galvanometer 54 moves to the next welding position, the laser generator 7 stops working, which can save energy.

[0044] 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 junction box lead laser welding device, characterized in that: It includes a frame, an assembly line component arranged at the bottom of the frame, a first Y-axis moving mechanism and a second Y-axis moving mechanism arranged at the top of the frame, three tin pressing units driven to move by the first Y-axis moving mechanism, and a laser welding unit driven to move by the second Y-axis moving mechanism. Three visual detection components are arranged on the top of the frame. The visual detection components include a light-emitting board that emits light downward and a detection lens arranged above the light-emitting board. A light-transmitting hole is arranged in the middle of the light-emitting board. The detection lens detects the laser welding position through the light-transmitting hole.

2. The junction box lead laser welding equipment according to claim 1, characterized in that: The assembly line assembly includes an X-axis assembly line, X-axis lifting and centering mechanisms arranged in pairs on both sides of the X-axis assembly line in the X direction, Y-axis centering mechanisms arranged in pairs on both sides of the Y direction of the X-axis assembly line, and a code scanning mechanism located in the middle of the X-axis assembly line.

3. The junction box lead laser welding equipment according to claim 1, characterized in that: 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 first Y-direction moving mechanism and the second Y-direction moving mechanism both include a moving beam moving along the Y-direction linear guide, and two Y-direction travel motors respectively provided at both ends of the moving beam. A motor seat for fixing the Y-direction travel motor is provided on both sides of the moving beam, and a driving shaft of the Y-direction travel motor passes through the motor seat and is connected to a Y-direction travel gear meshing with the Y-direction guide rack. A Y-direction slider cooperating with the Y-direction linear guide is provided at the bottom of the motor seat.

4. The junction box lead laser welding equipment according to claim 3, characterized in that: The tin pressing unit includes a tin pressing mounting frame, a first X-direction walking mechanism arranged on the upper part of the tin pressing mounting frame, a Y-direction moving mechanism arranged on the lower part of the tin pressing mounting frame, and a Z-direction moving mechanism driven to move by the Y-direction moving mechanism. The Z-direction moving mechanism drives the tin pressing assembly to rise and fall, and the middle part of the tin pressing mounting frame is passed through by the moving beam. The first X-direction walking mechanism drives the tin pressing mounting frame to move along the X direction on the moving beam.

5. The junction box lead laser welding equipment according to claim 4, characterized in that: The tin pressing assembly includes a tin pressing mounting plate, a fixed pressure head fixedly arranged at the lower part of the tin pressing mounting plate, and two movable pressure head modules arranged at both sides of the upper part of the tin pressing mounting plate. The movable pressure head module includes a Z-axis lifting cylinder, an X-axis sliding cylinder driven by the Z-axis lifting cylinder, and a movable pressure head driven by the X-axis sliding cylinder. The end of the movable pressure head is close to the fixed pressure head.

6. The junction box lead laser welding equipment according to claim 5, characterized in that: The tin pressing mounting plate is provided with a displacement sensor for detecting the relative height of the X-axis sliding cylinder.

7. The junction box lead laser welding equipment according to claim 1, characterized in that: The laser welding unit comprises a welding mounting frame, a second X-axis walking mechanism arranged on the welding mounting frame, a lifting module arranged on one side of the welding mounting frame, and a galvanometer driven to rise and fall by the lifting module.

8. The junction box lead laser welding equipment according to claim 7, characterized in that: A detection camera for detecting the welding position downward is provided on one side of the galvanometer, a light source for illuminating the welding range and a dust removal mechanism for absorbing welding waste are provided at the lower part, the dust removal mechanism is located on one side of the light source and draws air obliquely downward, a laser generator is provided on the upper part of the frame, and the laser generator guides the laser into the galvanometer through an optical fiber.

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