A high-efficiency and environment-friendly copper plate laser welding device and a welding method thereof

Abstract

The present application belongs to the technical field of laser welding, and particularly relates to a high-efficiency and environment-friendly copper plate laser welding device and a welding method thereof, which comprises a welding box and a control box installed on one side of the welding box, an end surface of the welding box is provided with a welding table, an end surface of the welding table is provided with a detachable clamping mechanism, the clamping mechanism is used for fixing the copper plate radiator on the welding table, and the device further comprises a plurality of movable blocks, the movable blocks are arranged above the welding box, each movable block is provided with a wire drawing and polishing assembly, and the welding box is provided with a pushing mechanism, which is used for pushing each movable block to move along each welding seam of the copper plate radiator. The present application can improve the fusion degree and welding strength of the heat dissipation fin and the copper plate during laser welding, can reduce the generation and escape of welding waste gas, can improve the air environment, has good environmental protection effect, can automatically optimize the welding time based on the waste gas concentration, and can guarantee the consistency of the welding strength.

Description

Technical Field

[0001] This invention belongs to the field of laser welding technology, and in particular relates to a highly efficient and environmentally friendly copper plate laser welding device and welding method. Background Technology

[0002] New energy vehicle batteries and motors generate a lot of heat during high-power operation. Traditional aluminum alloy heat sinks are insufficient for heat conduction. Copper plate heat sinks, with their advantages of high thermal conductivity, corrosion resistance and complex structure manufacturing, are used in scenarios such as battery liquid cooling plates and motor heat dissipation to optimize thermal management, improve system stability, support fast charging and reduce the risk of thermal runaway.

[0003] Currently, laser welding is a common welding process for copper plates. For example, a copper plate laser welding device is disclosed in patent publication number CN109128659B. In the laser welding of copper plate heat sinks, the heat sink is clamped onto the copper plate, and then the laser welding head is used to weld along a preset route, which is highly efficient. However, during laser welding, the high energy of the laser acts on impurities such as oil on the surface of the copper plate, and the high-temperature plasma evaporated during welding causes nitrogen and oxygen in the air to react and generate harmful gases such as nitrogen oxides, which leads to a deterioration of the air quality around the welding area. Currently, these waste gases are generally collected and treated by an exhaust gas collection and treatment system. When there is a lot of waste gas, the collection system may not be able to collect it sufficiently, resulting in some waste gas escaping and poor environmental protection. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a highly efficient and environmentally friendly copper plate laser welding device and welding method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-efficiency and environmentally friendly copper plate laser welding device and welding method thereof, comprising a welding box and a control box installed on one side of the welding box, wherein a welding table is installed on the end face of the welding box, and a detachable clamping mechanism is installed on the end face of the welding table, the clamping mechanism being used to fix the copper plate heat sink on the welding table, and further comprising:

[0006] Multiple movable blocks are arranged above the welding box, and each movable block is equipped with a wire drawing and grinding component. The welding box is equipped with a pushing mechanism for pushing each movable block to move along each welding seam of the copper plate heat sink.

[0007] Top frame, installed on top of the welding box;

[0008] A laser welding head is located below the top frame. A three-dimensional driving unit is installed on the top frame. A mounting plate is installed on the mounting end of the three-dimensional driving unit. The three-dimensional driving unit is used to drive the mounting plate to move in the horizontal left-right, front-back and vertical directions. An angle adjustment robotic arm is installed at the bottom of the mounting plate. The angle adjustment robotic arm is used to adjust the angle of the laser welding head.

[0009] An exhaust gas adsorption unit is installed at the bottom of the mounting plate to collect exhaust gases generated during welding.

[0010] Preferably, each of the wire drawing and polishing components includes steel wire polishing pads that are detachably installed on both sides of the lower end of the sidewall of the movable block, and each steel wire polishing pad has diamond wire drawing particles embedded on its inner side.

[0011] Preferably, the pushing mechanism includes two support frames fixedly installed on the side wall of the welding box. Each of the two support frames is equipped with an electric hydraulic cylinder on its side wall, and the telescopic ends of the two electric hydraulic cylinders are fixedly connected to a connecting plate. Hollow steel pipes are fixedly arranged between each of the movable blocks and the connecting plate. The electric hydraulic cylinders are electrically connected to the control box.

[0012] Preferably, the exhaust gas adsorption unit includes an inner circular sleeve and an outer conical sleeve fixedly installed at the bottom of the mounting plate. The inner circular sleeve is disposed inside the outer conical sleeve and is fitted onto the outside of the angle-adjusting robotic arm. A stainless steel flexible hose is inserted into the side wall of the outer conical sleeve. A suction pump is installed on one side of the bottom of the top frame, and a purification component is installed on one side of the top of the top frame. The suction end of the suction pump is connected to the stainless steel flexible hose through the purification component. A detection component is disposed between the inner circular sleeve and the outer conical sleeve. The suction pump is electrically connected to the control box. The purification component is used to purify the welding exhaust gas, and the detection component is used to detect the concentration of exhaust gas passing between the outer conical sleeve and the inner circular sleeve.

[0013] Preferably, the purification assembly includes a purification box fixedly installed on one side of the top of the top frame, the end of the stainless steel flexible hose away from the outer cone sleeve penetrates the front side wall of the purification box, two baffles are fixedly installed inside the purification box, and purification filler is filled between the two baffles, and the back of the purification box is fixedly connected to the suction end of the suction pump via a suction pipe.

[0014] Preferably, the detection assembly includes an outer transparent mounting cover fixedly installed on the inner wall of the outer conical sleeve. An annular light strip is installed on the inner wall of the outer conical sleeve at a position inside the outer transparent mounting cover. An inner transparent mounting cover is installed on the outer wall of the inner circular sleeve, and an annular photoresistor is installed on the outer wall of the inner circular sleeve at a position inside the inner transparent mounting cover. The light emitted by the annular light strip is irradiated to the annular photoresistor through the outer and inner transparent mounting covers. The control box controls the operation of the three-dimensional drive unit and the angle adjustment robotic arm by detecting the current intensity passing through the circuit connected to the annular photoresistor.

[0015] Preferably, the suction pump has an outlet pipe installed at its outlet end, a branch pipe is fixedly inserted into the wall of the outlet pipe, a normally open electrically controlled valve is installed inside the branch pipe, a normally closed pulse solenoid valve is installed inside the outlet pipe below the branch pipe, a connecting hose is fixedly connected to the lower end of the outlet pipe, the connecting plate is hollow inside, and the connecting hose and each hollow steel pipe are connected to the connecting plate, and each movable block has a blow hole on its side wall, and each blow hole is connected to the corresponding hollow steel pipe.

[0016] A welding method using the aforementioned high-efficiency and environmentally friendly copper plate laser welding device includes the following steps:

[0017] S1. Clamp each heat sink fin of the copper plate radiator into the clamping mechanism, then place the copper plate of the copper plate radiator on the top of the welding table, and then fix the clamping mechanism on the welding table so that the heat sink fins of the copper plate radiator and the copper plate are assembled and pressed together.

[0018] S2. Press the start button on the control box. The push mechanism will move each moving block according to the preset program and eventually drive each moving block to return to its original position.

[0019] S3. After the pushing mechanism finishes its work, the control box controls the three-dimensional drive unit, the angle adjustment robotic arm, and the laser welding head to start working and weld the heat sink of the copper plate radiator and the weld seam of the copper plate.

[0020] S4. When the laser welding head starts working, the control box starts the exhaust gas adsorption unit to adsorb and purify the exhaust gas. During the welding process, the control box detects the exhaust gas concentration reflected by the detection component in the exhaust gas adsorption unit and controls the three-dimensional drive unit and angle adjustment robotic arm to work.

[0021] S5. After welding is completed, remove the clamping mechanism from the welding table and separate the clamping mechanism from each heat sink of the copper plate heat sink.

[0022] Compared with existing technologies, the advantages of a highly efficient and environmentally friendly copper plate laser welding device and its welding method are as follows:

[0023] 1. Through the coordinated operation of the welding box, control box, welding table, clamping mechanism, movable block, wire drawing and grinding components, and pushing mechanism, the various weld seams of the copper plate heat sink can be wire drawn and ground before welding. On the one hand, this increases the roughness of the weld seams, which is conducive to the full fusion of the heat sink and the copper plate during subsequent laser welding, thereby improving the welding strength. On the other hand, it can remove any impurities such as oil and oxides that may be present in advance, reducing the waste gas generated subsequently and improving the environmental protection effect.

[0024] 2. By setting up the waste gas adsorption unit, the waste gas generated during laser welding can be adsorbed and purified. Combined with the pre-grinding of the wire drawing and polishing components, the generation and escape of waste gas can be reduced as much as possible, thereby minimizing the impact of welding waste gas on the air environment.

[0025] 3. Through the set detection components, the welding time for welding positions with high concentrations of waste gas can be automatically extended based on the concentration of waste gas generated during welding, so as to minimize the impact of impurities on the welding strength. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a high-efficiency and environmentally friendly copper plate laser welding device provided by the present invention;

[0027] Figure 2 This invention provides a highly efficient and environmentally friendly copper plate laser welding device. Figure 1 Enlarged view of the structure of section A;

[0028] Figure 3 This is a schematic diagram of the connection structure between the movable block and the connecting plate of a high-efficiency and environmentally friendly copper plate laser welding device provided by the present invention;

[0029] Figure 4 This invention provides a highly efficient and environmentally friendly copper plate laser welding device. Figure 3 Enlarged view of the structure of section B;

[0030] Figure 5 This is a schematic diagram of the internal structure of the outer conical sleeve and inner circular sleeve of the efficient and environmentally friendly copper plate laser welding device provided by the present invention.

[0031] Figure 6 This is a schematic diagram of the internal structure of the purification box of a high-efficiency and environmentally friendly copper plate laser welding device provided by the present invention;

[0032] Figure 7 This invention provides a highly efficient and environmentally friendly copper plate laser welding device. Figure 5 Enlarged view of the structure of section C;

[0033] Figure 8This is a three-dimensional structural diagram of the suction pump of a high-efficiency and environmentally friendly copper plate laser welding device provided by the present invention.

[0034] In the diagram: 1. Welding box; 2. Control box; 3. Welding table; 4. Clamping mechanism; 5. Copper plate radiator; 6. Movable block; 7. Wire drawing and grinding assembly; 71. Steel wire grinding pad; 72. Diamond wire drawing pellets; 8. Pushing mechanism; 81. Support frame; 82. Electric hydraulic cylinder; 83. Connecting plate; 84. Hollow steel pipe; 9. Top frame; 10. Laser welding head; 11. Three-dimensional drive unit; 12. Mounting plate; 13. Angle-adjustable robotic arm; 14. Exhaust gas adsorption unit; 141. Inner sleeve ; 142. Outer cone sleeve; 143. Stainless steel flexible hose; 144. Suction pump; 15. Purification assembly; 151. Purification box; 152. Baffle; 153. Purification packing; 154. Suction pipe; 16. Detection assembly; 161. Outer transparent mounting cover; 162. Ring light strip; 163. Inner transparent mounting cover; 164. Ring photoresistor; 17. Air outlet pipe; 18. Branch pipe; 19. Normally open solenoid valve; 20. Pulse normally closed solenoid valve; 21. Connecting hose; 22. Puffing hole. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0036] like Figures 1-8 As shown, a high-efficiency and environmentally friendly copper plate laser welding device and its welding method include a welding box 1 and a control box 2 installed on one side of the welding box 1. A welding table 3 is installed on the end face of the welding box 1, and a detachable clamping mechanism 4 is installed on the end face of the welding table 3. The clamping mechanism 4 is used to fix the copper plate heat sink 5 on the welding table 3. It also includes multiple movable blocks 6, all of which are arranged above the welding box 1. Each movable block 6 is equipped with a wire drawing and polishing assembly 7. Each wire drawing and polishing assembly 7 includes steel wire polishing pads 71 ​​that are detachably installed on both sides of the lower end of the side wall of the movable block 6, and diamond wire drawing particles 72 are embedded in the inner side of each steel wire polishing pad 71.

[0037] The welding box 1 is equipped with a pushing mechanism 8, which is used to push each movable block 6 to move along each welding seam of the copper plate radiator 5. The pushing mechanism 8 includes two support frames 81 fixedly installed on the side wall of the welding box 1. Each of the two support frames 81 is equipped with an electric hydraulic cylinder 82 on its side wall, and the telescopic ends of the two electric hydraulic cylinders 82 are fixedly connected to a connecting plate 83. Hollow steel pipes 84 are fixedly installed between each movable block 6 and the connecting plate 83. The electric hydraulic cylinders 82 are electrically connected to the control box 2.

[0038] The top frame 9 is installed on the top of the welding box 1, and the laser welding head 10 is located below the top frame 9. The top frame 9 is equipped with a three-dimensional drive unit 11, and the mounting end of the three-dimensional drive unit 11 is equipped with a mounting plate 12. The three-dimensional drive unit 11 is used to drive the mounting plate 12 to move in the horizontal left and right, front and back and vertical directions. An angle adjustment robotic arm 13 is installed at the bottom of the mounting plate 12. The angle adjustment robotic arm 13 is used to adjust the angle of the laser welding head 10.

[0039] The exhaust gas adsorption unit 14 is installed at the bottom of the mounting plate 12 to collect the exhaust gas generated during welding. The exhaust gas adsorption unit 14 includes an inner circular sleeve 141 and an outer conical sleeve 142 fixedly installed at the bottom of the mounting plate 12. The inner circular sleeve 141 is located inside the outer conical sleeve 142 and is fitted onto the outside of the angle-adjustable robotic arm 13. A stainless steel flexible hose 143 is inserted into the side wall of the outer conical sleeve 142. A suction pump 144 is installed on one side of the bottom of the top frame 9, and a purification component 15 is installed on one side of the top of the top frame 9. The suction end of the suction pump 144 is connected to the stainless steel flexible hose 143 through the purification component 15. The suction pump 144 is electrically connected to the control box 2. Next, the purification component 15 is used to purify the welding exhaust gas. The purification component 15 includes a purification box 151 fixedly installed on one side of the top of the top frame 9. The end of the stainless steel flexible hose 143 away from the outer cone sleeve 142 passes through the front side wall of the purification box 151. Two baffles 152 are fixedly installed inside the purification box 151, and the space between the two baffles 152 is filled with purification filler 153. The back of the purification box 151 and the suction end of the suction pump 144 are fixedly connected to the suction pipe 154. The purification filler 153 can be selected from adsorption materials such as activated carbon filler. The top of the purification box 151 has a material replacement port and a cover plate to facilitate the replacement of the purification filler 153.

[0040] A detection component 16 is disposed between the inner circular sleeve 141 and the outer conical sleeve 142. The detection component 16 is used to detect the concentration of exhaust gas passing between the outer conical sleeve 142 and the inner circular sleeve 141. The detection component 16 includes an outer transparent mounting cover 161 fixedly installed on the inner wall of the outer conical sleeve 142. An annular light strip 162 is installed on the inner wall of the outer conical sleeve 142 at a position inside the outer transparent mounting cover 161. An inner transparent mounting cover 163 is installed on the outer wall of the inner circular sleeve 141, and an annular photoresistor 164 is installed on the outer wall of the inner circular sleeve 141 at a position inside the inner transparent mounting cover 163. The annular light strip 162 emits... Light shines through the outer transparent mounting cover 161 and the inner transparent mounting cover 163 onto the annular photoresistor 164. The control box 2 controls the three-dimensional drive unit 11 and the angle adjustment robotic arm 13 to work by detecting the current intensity passing through the circuit connected to the annular photoresistor 164. A cleaning structure is installed between the outer conical sleeve 142 and the inner circular sleeve 141. The cleaning structure is driven by a motor to rotate the gear structure, which moves a cleaning pad on the transparent surfaces of the outer transparent mounting cover 161 and the inner transparent mounting cover 163, thereby preventing some exhaust gas particles from adhering to the surfaces of the outer transparent mounting cover 161 and the inner transparent mounting cover 163.

[0041] An air outlet pipe 17 is installed at the air outlet end of the suction pump 144. A branch pipe 18 is fixedly inserted into the wall of the air outlet pipe 17. A normally open solenoid valve 19 is installed inside the branch pipe 18. A normally closed pulse solenoid valve 20 is installed inside the air outlet pipe 17 below the branch pipe 18. A connecting hose 21 is fixedly connected to the lower end of the air outlet pipe 17. The interior of the connecting plate 83 is hollow, and the connecting hose 21 and each hollow steel pipe 84 are connected to the connecting plate 83. Each movable block 6 has a blow hole 22 on its side wall, and each blow hole 22 is connected to the corresponding hollow steel pipe 84. When the connection is established, after the movable block 6 returns to its original position and before the laser welding head 10 is started, the control box 2 will control the suction pump 144 to work first, control the normally open solenoid valve 19 to close, and input a pulse signal to the normally closed pulse solenoid valve 20. At this time, the air delivered by the suction pump 144 will be ejected from each blow hole 22 through the air outlet pipe 17, connecting hose 21, connecting plate 83, and hollow tube 84. Under the action of the normally closed pulse solenoid valve 20, the ejected airflow is ejected intermittently, which can blow away the impurities left around the weld seam during grinding. This process lasts for 30 seconds.

[0042] The operating principle of the present invention is explained as follows: Each heat sink fin of the copper plate heat sink 5 is clamped into the clamping mechanism 4, and then the copper plate of the copper plate heat sink 5 is placed on the top of the welding table 3. Then, the clamping mechanism 4 is fixed on the welding table 3, so that the heat sink fins of the copper plate heat sink 5 and the copper plate are assembled and pressed together (the clamping mechanism 4 includes a clamping structure for clamping each heat sink fin. The clamping structure clamps the heat sink fin from the front and rear sides. The clamping structures on both sides are respectively installed on a plate with threaded holes. After all the heat sink fins are installed in the clamping structure, the plate is locked and fixed on the welding table 3 by bolts, so that the bottom of each heat sink fin abuts against the top of the copper plate. The welding table 3 has positioning posts for positioning the copper plate to ensure the accurate position of the copper plate and the heat sink fins).

[0043] Then press the start button on the control box 2. The control box 2 will control the electric hydraulic cylinder 82 to work. The electric hydraulic cylinder 82 will push each movable block 6 to move through the connecting plate 83 and the hollow steel pipe 84. The movable block 6 will move along the weld seam between each heat sink of the copper plate radiator 5 and the copper plate. Under the action of the steel wire grinding pad 71, the oil stains and oxides that may exist at the weld seam can be ground and removed as much as possible. The diamond wire drawing grain 72 can draw the weld seam, so that the weld seam produces strip-shaped grooves (about 0.1 mm deep), thereby increasing the roughness of the weld seam. The rough surface induces diffuse reflection and multiple scattering of the laser through the micro-concave and convex structure, reducing laser loss. The rough surface increases the actual contact area between the workpieces, forming more "micro-weld points", accelerating the heat transfer to the deep layer of the interface, which is conducive to the fusion between the heat sink of the copper plate radiator 5 and the copper plate. The pushing mechanism 8 will push each movable block 6 to move according to the preset program, and finally drive each movable block 6 to move back to reset.

[0044] After the push mechanism 8 finishes its work, the control box 2 controls the three-dimensional drive unit 11, the angle adjustment robotic arm 13, and the laser welding head 10 to start working, and to weld the heat sink of the copper plate radiator 5 and the weld seam of the copper plate (the three-dimensional drive unit 11 includes an electric push rod and two lead screw drive structures. The electric push rod is used to drive the mounting plate 12 to move the laser welding head 10 in the vertical direction. The two lead screw drive structures are used to drive the electric push rod to move in the horizontal left and right and forward and backward directions, respectively, so that the laser welding head 10 can move in the horizontal left and right, forward and backward and vertical directions. The angle adjustment robotic arm 13 has at least two electric joint structures. The joints are driven by motors to rotate, thereby realizing the angle adjustment of the laser welding head 10. The laser welding head 10 can emit a welding laser to heat and weld the heat sink of the copper plate radiator 5 and the weld seam of the copper plate radiator 5).

[0045] When the laser welding head 10 starts working, the control box 2 starts the suction pump 144. The suction pump 144 draws away the air between the outer conical sleeve 142 and the inner circular sleeve 141 through the suction pipe 154, the purification box 151, and the stainless steel hose 143, thereby creating a negative pressure between the outer conical sleeve 142 and the inner circular sleeve 141, which can adsorb the welding fumes generated during laser welding. Since the steel wire grinding pad 71 has already ground off the oil and other impurities at the weld seam before welding, the amount of exhaust gas generated during laser welding is relatively small. Through negative pressure suction, the welding fumes can be drawn into the purification box 151 as much as possible. Through the purification packing 153 in the purification box 151, the impurities in the welding fumes can be adsorbed and purified, thereby preventing the welding fumes from affecting the surrounding air environment.

[0046] Secondly, during the process of adsorbing flue gas, if there are a lot of oxides and other impurities remaining at the weld seam (oxides adhere to the surface of copper plates or heat sinks with high strength, and the steel wire grinding pad 71 cannot fully grind them off), then when the laser welding reaches this position, the concentration of exhaust gas generated by the high temperature increases. At this time, the concentration of exhaust gas entering between the outer conical sleeve 142 and the inner circular sleeve 141 increases. When the exhaust gas passes between the outer conical sleeve 142 and the inner circular sleeve 141, some of the light emitted by the annular light strip 162 will be blocked and scattered by the exhaust gas, resulting in a decrease in the light intensity illuminating the annular photoresistor 164. This reduces the current flowing through the connection circuit of the annular photoresistor 164 detected by the control box 2 (within a certain range of light intensity). The lower the light intensity, the greater the resistance of the ring photoresistor 164. When the concentration of exhaust gas increases, the current intensity detected by the control box 2 decreases. When the current intensity is below 15 mA, it indicates that there are too many impurities such as oxides at the welding position. At this time, the control box 2 will control the three-dimensional drive unit 11 and the angle adjustment robotic arm 13 to move the laser welding head 10 back 3 cm to reheat and weld the position with more exhaust gas. (Since the exhaust gas collection and detection has a certain delay, by moving the laser welding head 10 back, the accuracy of welding the position with more exhaust gas can be ensured. By welding, the heating at this position can be ensured, which is conducive to the full fusion between the heat sink and the copper plate to ensure the welding strength.)

[0047] After welding is completed, the clamping mechanism 4 is removed from the welding table 3 and the clamping mechanism 4 is separated from each heat sink of the copper plate heat sink 5. At the same time, the control box 2 drives the laser welding head 10 to return and reset through the three-dimensional drive unit 11 and the angle adjustment robotic arm 13. Then the welding work of the next copper plate heat sink 5 can begin.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-efficiency and environmentally friendly copper plate laser welding device, comprising a welding box (1) and a control box (2) installed on one side of the welding box (1), wherein a welding table (3) is installed on the end face of the welding box (1), and a detachable clamping mechanism (4) is installed on the end face of the welding table (3), the clamping mechanism (4) being used to fix a copper plate heat sink (5) on the welding table (3), characterized in that, Also includes: Multiple movable blocks (6) are all located above the welding box (1). Each movable block (6) is equipped with a wire drawing and polishing assembly (7). The welding box (1) is equipped with a pushing mechanism (8). The pushing mechanism (8) is used to push each movable block (6) to move along each welding seam of the copper plate radiator (5). Top frame (9) is installed on top of the welding box (1); A laser welding head (10) is disposed below the top frame (9). The top frame (9) is equipped with a three-dimensional drive unit (11). A mounting plate (12) is mounted on the mounting end of the three-dimensional drive unit (11). The three-dimensional drive unit (11) is used to drive the mounting plate (12) to move in the horizontal left-right, front-back and vertical directions. An angle adjustment robot arm (13) is mounted on the bottom of the mounting plate (12). The angle adjustment robot arm (13) is used to adjust the angle of the laser welding head (10). The exhaust gas adsorption unit (14) is installed at the bottom of the mounting plate (12) for collecting exhaust gas generated during welding; The exhaust gas adsorption unit (14) includes an inner circular sleeve (141) and an outer conical sleeve (142) fixedly installed at the bottom of the mounting plate (12). The inner circular sleeve (141) is located inside the outer conical sleeve (142) and is fitted onto the outside of the angle-adjusting robotic arm (13). A stainless steel flexible hose (143) is inserted into the side wall of the outer conical sleeve (142). A suction pump (144) is installed on one side of the bottom of the top frame (9), and a suction pump (144) is installed on one side of the top of the top frame (9). The purification component (15) is connected to the stainless steel hose (143) through the suction end of the suction pump (144). A detection component (16) is provided between the inner round sleeve (141) and the outer cone sleeve (142). The suction pump (144) is electrically connected to the control box (2). The purification component (15) is used to purify the welding exhaust gas. The detection component (16) is used to detect the concentration of exhaust gas passing between the outer cone sleeve (142) and the inner round sleeve (141).

2. The high-efficiency and environmentally friendly copper plate laser welding device according to claim 1, characterized in that, Each of the wire drawing and polishing components (7) includes a wire polishing pad (71) that can be detachably installed on both sides of the lower end of the side wall of the movable block (6), and each wire polishing pad (71) is inlaid with diamond wire drawing particles (72) on its inner side.

3. The high-efficiency and environmentally friendly copper plate laser welding device according to claim 2, characterized in that, The pushing mechanism (8) includes two support frames (81) fixedly installed on the side wall of the welding box (1). Electric hydraulic cylinders (82) are installed on the side walls of the two support frames (81), and the telescopic ends of the two electric hydraulic cylinders (82) are fixedly connected to a connecting plate (83). Hollow steel pipes (84) are fixedly arranged between each of the movable blocks (6) and the connecting plate (83). The electric hydraulic cylinders (82) are electrically connected to the control box (2).

4. The high-efficiency and environmentally friendly copper plate laser welding device according to claim 3, characterized in that, The purification assembly (15) includes a purification box (151) fixedly installed on one side of the top of the top frame (9). The end of the stainless steel hose (143) away from the outer cone sleeve (142) passes through the front side wall of the purification box (151). Two baffles (152) are fixedly installed inside the purification box (151), and purification filler (153) is filled between the two baffles (152). The back of the purification box (151) is fixedly connected to the suction end of the suction pump (144) with a suction pipe (154).

5. The high-efficiency and environmentally friendly copper plate laser welding device according to claim 4, characterized in that, The detection component (16) includes an outer transparent mounting cover (161) fixedly installed on the inner wall of the outer conical sleeve (142). An annular light strip (162) is installed on the inner wall of the outer conical sleeve (142) at the position inside the outer transparent mounting cover (161). An inner transparent mounting cover (163) is installed on the outer wall of the inner circular sleeve (141), and an annular photoresistor (164) is installed on the outer wall of the inner circular sleeve (141) at the position inside the inner transparent mounting cover (163). The light emitted by the annular light strip (162) is irradiated to the annular photoresistor (164) through the outer transparent mounting cover (161) and the inner transparent mounting cover (163). The control box (2) controls the operation of the three-dimensional drive unit (11) and the angle adjustment robot arm (13) by detecting the current intensity passing through the connection circuit of the annular photoresistor (164).

6. The high-efficiency and environmentally friendly copper plate laser welding device according to claim 5, characterized in that, The suction pump (144) is equipped with an air outlet pipe (17) at its outlet end. A branch pipe (18) is fixedly inserted into the wall of the air outlet pipe (17). A normally open solenoid valve (19) is installed inside the branch pipe (18). A normally closed pulse solenoid valve (20) is installed inside the air outlet pipe (17) below the branch pipe (18). A connecting hose (21) is fixedly connected to the lower end of the air outlet pipe (17). The connecting plate (83) is hollow inside. The connecting hose (21) and each hollow steel pipe (84) are connected to the connecting plate (83). Each movable block (6) has a blow hole (22) on its side wall. Each blow hole (22) is connected to the corresponding hollow steel pipe (84).

7. A welding method using the high-efficiency and environmentally friendly copper plate laser welding device as described in claim 6, characterized in that, The welding method includes the following steps: S1. Clamp each heat sink of the copper plate radiator (5) into the clamping mechanism (4), then place the copper plate of the copper plate radiator (5) on the top of the welding table (3), and then fix the clamping mechanism (4) on the welding table (3) so that the heat sink of the copper plate radiator (5) and the copper plate are assembled and pressed together. S2. Press the start button on the control box (2), and the push mechanism (8) will push each movable block (6) to move according to the preset program, and finally drive each movable block (6) to move back to reset. S3. After the push mechanism (8) finishes working, the control box (2) controls the three-dimensional drive unit (11), the angle adjustment robot arm (13) and the laser welding head (10) to start working and weld the heat sink of the copper plate heat sink (5) and the weld seam of the copper plate. S4. When the laser welding head (10) starts working, the control box (2) starts the exhaust gas adsorption unit (14) to adsorb and purify the exhaust gas. During the welding process, the control box (2) detects the exhaust gas concentration reacted by the detection component (16) in the exhaust gas adsorption unit (14) and controls the three-dimensional drive unit (11) and the angle adjustment robot arm (13) to work. S5. After welding is completed, remove the clamping mechanism (4) from the welding table (3) and separate the clamping mechanism (4) from each heat sink of the copper plate heat sink (5).

Images