An efficient laser welding device for aluminum alloy profiles

Abstract

The present invention discloses a high-efficiency laser welding device for aluminum alloy profiles, which relates to the field of laser beam welding. The device includes a base frame and driving and clamping members symmetrically arranged at the front and rear ends of the top of the base frame for driving two workpieces to rotate synchronously and the clamping distance of which can be adjusted. An x-direction compensation clamping member capable of moving left and right and the clamping distance of which can be adjusted and a z-direction compensation clamping member capable of moving up and down and the clamping distance of which can be adjusted are arranged between the two driving and clamping members. A lifting table with an adjustable height is arranged beside the x-direction compensation clamping member and the z-direction compensation clamping member. An installation frame with an adjustable position in the y-direction is installed on the lifting table, and a laser welding torch is installed on the installation frame. The existing laser welding method for aluminum alloy profiles has problems of low efficiency and low welding quality, while this device has high efficiency and high welding quality.

Description

Technical Field

[0001] The present invention relates to the field of processing with laser beams, and particularly to a high-efficiency laser welding device for aluminum alloy profiles. Background Art

[0002] Aluminum alloy profiles are objects with a certain geometric shape made of aluminum alloy through processes such as rolling, extrusion, and casting. Aluminum alloy round tubes, aluminum alloy square tubes, etc. are all common aluminum alloy profiles.

[0003] Aluminum alloy round tubes can be used to transport various fluids. Because they have a certain corrosion resistance, they can ensure the long-term stable operation of the transport pipeline. Chemical enterprises often use aluminum alloy transport pipelines to transport liquids or gases with less corrosion, reducing the risk of leakage. The aluminum alloy transport pipeline is formed by welding multiple sections of aluminum alloy round tubes end to end in sequence.

[0004] Traditional aluminum alloy welding generally uses TIG welding or MIG welding processes. However, during the welding process, there will be a large heat input, causing significant changes in the aluminum alloy and a slow welding speed. Therefore, laser welding is now being used for aluminum alloy welding. Laser welding uses a laser beam with a high energy density as the heat source, which is efficient and precise.

[0005] When laser welding aluminum alloy round tubes, the staff first fix two sections of aluminum alloy round tubes and ensure that the central axes of the two sections of aluminum alloy round tubes are on the same straight line, and then use a laser welding gun for welding. During the welding process, the staff often need to change their working postures. Therefore, the position and posture of the laser welding gun also often change, resulting in a low welding efficiency and uneven welds. Moreover, an unstable moving speed will also cause situations such as incomplete fusion and incomplete penetration between the weld and the aluminum alloy round tube, reducing the connection strength.

[0006] Therefore, the existing laser welding methods for aluminum alloy profiles have the problems of low efficiency and low welding quality. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the above-mentioned disadvantages of the prior art and provide a high-efficiency laser welding device for aluminum alloy profiles with higher efficiency and higher welding quality.

[0008] In order to solve the above technical problems, the present invention provides an aluminum alloy profile high-efficiency laser welding equipment comprising: a base frame and driving clamps symmetrically arranged at the front and rear ends of the top of the base frame for driving two workpieces to rotate synchronously and with an adjustable clamping distance, an x-direction compensation clamp that can move left and right and with an adjustable clamping distance, and a z-direction compensation clamp that can move up and down and with an adjustable clamping distance are arranged between the two driving clamps; a lifting platform with adjustable height is arranged next to the x-direction compensation clamp and the z-direction compensation clamp, and a mounting frame with adjustable position in the y-direction is installed on the lifting platform, and a laser welding gun is installed on the mounting frame.

[0009] As a further improvement of the present invention: the driving clamping member includes a clamping unit and a driving unit for driving the clamping unit to rotate; the clamping unit includes three clamping rollers that can move away from or close to the center point of the adjusting ring as the adjusting ring rotates, and a horizontal first motor; the clamping rollers are rotatably mounted on one end of the bending rod, a small slider is provided on a surface of the bending rod close to the adjusting ring, and small slide grooves are provided on the adjusting ring for each small slider to slide back and forth radially along the adjusting ring; one end of the bending rod away from the clamping roller is rotatably mounted on the first supporting frame through a horizontal first rotating shaft; an arc-shaped rack is fixedly mounted at the incision of the adjusting ring, and a first gear meshing with the arc-shaped rack is fixedly mounted on the output shaft of the first motor.

[0010] Preferably, the driving unit includes an outer gear ring capable of rotating around the y direction and three second gears fixedly mounted on the first rotating shaft and meshing with the outer gear ring. The end of the first rotating shaft away from the second gear is fixedly sleeved with a first pulley, a second pulley is fixedly mounted on the clamping roller, and the first pulley and the second pulley on the same bending rod are connected through a first belt transmission; a horizontal second motor is fixedly mounted on the base frame, and the second motor drives the outer gear rings in the two driving clamps to rotate synchronously through a transmission member.

[0011] Preferably, the x-axis compensating clamp includes a second support frame that can slide left and right on the top of the base frame and a clamping unit installed on the second support frame. A horizontal first lead screw is arranged above the base frame, and a horizontal third motor for driving the first lead screw to rotate is fixedly installed on one side of the base frame. A first lead screw nut matching the first lead screw is arranged on the first lead screw, and the first lead screw nut is fixedly connected to the second support frame.

[0012] Preferably, the z-axis compensating clamp includes a third support frame that can be raised and lowered, a clamping unit installed on the third support frame, and a vertical second lead screw. A vertical fourth motor for driving the second lead screw to rotate is fixedly installed on the base frame. A second lead screw nut matching the second lead screw is provided on the second lead screw, and the second lead screw nut is fixedly connected to the third support frame.

[0013] As a further improvement of the present invention: The lifting table is slidably mounted on the slide rail frame. The slide rail frame includes a upper plate and a lower plate that are parallel to each other, and two slide rails vertically installed between the upper plate and the lower plate for the lifting table to slide up and down. The slide rail frame is installed on the top of the frame; a first screw rod is vertically and fixedly installed at the bottom of the lifting table, and the bottom of the first screw rod extends into the frame; a first return spring is sleeved outside the part of the slide rail located between the lifting table and the lower plate. The top of the first return spring is fixedly connected to the bottom of the lifting table, and the bottom of the first return spring is fixedly connected to the top of the lower plate; two vertical slide rods are arranged in the frame, and a tray is slidably mounted on the slide rods. A second return spring is sleeved outside the part of the slide rod located between the tray and the bottom plate of the frame. The top of the second return spring is fixedly connected to the bottom of the tray, and the bottom of the second return spring is fixedly connected to the top of the bottom plate of the frame; a vertical fifth motor is fixedly installed at the bottom of the tray, and a threaded sleeve that can rotate around the z-axis and is matched with the first screw rod is vertically rotatably installed in the tray. The output shaft of the fifth motor is fixedly connected to the threaded sleeve, and holes for the threaded sleeve to pass through are opened at the bottom of the slide rail frame and the top of the frame.

[0014] As a further improvement of the present invention: A horizontal fifth rotating shaft is rotatably installed in the lifting table, and the mounting frame is slidably mounted on the fifth rotating shaft. A horizontal sixth motor for driving the fifth rotating shaft to rotate is fixedly installed on one side of the lifting table. First bevel gears and second bevel gears are respectively fixedly sleeved at both ends of the fifth rotating shaft. Vertical shafts are respectively vertically rotatably installed on both sides of the top of the lifting table. A third bevel gear meshing with the first bevel gear is installed at the bottom of the vertical shaft at the rear side, and a fourth bevel gear meshing with the second bevel gear is installed at the bottom of the vertical shaft at the front side. A short connecting rod is vertically installed at the top of the vertical shaft, and a round plate for pushing the mounting frame to slide on the fifth rotating shaft is fixedly installed at the top of the end of the short connecting rod away from the vertical shaft.

[0015] As a further improvement of the present invention: A wire feeding member for fixing the welding wire and having an adjustable angle with the workpiece is arranged beside the laser welding torch. The wire feeding member includes a fixing rod whose one end is hinged to the left side of the laser welding torch. The end of the fixing rod away from the laser welding torch is fixedly connected to the wire feeding body. A small bracket is arranged on the left side of the mounting frame. A second screw rod is vertically rotatably installed in the small bracket. The bottom of the second screw rod is hinged to one end of an L-shaped connecting rod. The end of the L-shaped connecting rod away from the second screw rod is hinged to the fixing rod. A nut matching the second screw rod is arranged outside the part of the second screw rod located in the small bracket; a distance sensor for measuring the distance from the welding wire is arranged on the right side of the laser welding torch.

[0016] The beneficial effects of the present invention are as follows: An efficient laser welding device for aluminum alloy profiles provided by the present invention has high efficiency and high welding quality.

[0017] The device has a driving clamping member with an adjustable clamping distance, so it can adapt to workpieces with different pipe diameters and ensure the concentricity of two workpieces. After the two workpieces are initially fixed, while the x-direction compensation clamping member and the z-direction compensation clamping member perform secondary clamping on the workpieces, they can also drive the two workpieces to move slightly in the x-direction and z-direction respectively to compensate for the offset, so as to ensure the precise alignment of the two workpieces. At the same time, during welding, the laser welding torch can move up and down or back and forth. After adjusting its position, it can accurately weld at the welding position.

[0018] After the position is adjusted, the driving clamping member drives the two workpieces to start rotating synchronously, and the laser welding torch welds at a fixed position. In this way, the position and posture of the laser welding torch remain unchanged without moving, and the rotation speed of the workpiece is relatively uniform, so the welding efficiency is relatively high and the weld seam is relatively uniform. Brief Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention and the workpiece;

[0020] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 3 It is a top view of the present invention;

[0022] Figure 4 It is a partial structural schematic diagram of the clamping unit in the driving clamping member of the present invention;

[0023] Figure 5 It is a partial structural schematic diagram of the clamping unit in the driving clamping member of the present invention from another angle;

[0024] Figure 6 It is a partial structural schematic diagram of the driving unit in the driving clamping member of the present invention;

[0025] Figure 7 It is a schematic diagram of the overall structure of the partial structure of two driving clamping members and the transmission member of the present invention;

[0026] Figure 8 It is a schematic diagram of the overall structure of the x-direction compensation clamping member and a part of the base frame of the present invention;

[0027] Figure 9 It is a partial structural partial cross-sectional schematic diagram of the x-direction compensation clamping member of the present invention;

[0028] Figure 10 It is a schematic diagram of the overall structure of the z-direction compensation clamping member and a part of the base frame of the present invention;

[0029] Figure 11 It is a partial structural partial cross-sectional schematic diagram of the z-direction compensation clamping member of the present invention;

[0030] Figure 12 It is the assembly drawing of the lifting table, slide rail frame, etc. in the present invention;

[0031] Figure 13 It is the partial sectional schematic diagram of the lifting table, slide rail frame, etc. in the present invention;

[0032] Figure 14 It is the assembly drawing of the mounting bracket, fifth rotating shaft, etc. in the present invention;

[0033] Figure 15 It is the assembly drawing of the mounting bracket, wire feeding member, and vision sensor in the present invention;

[0034] The names of the components corresponding to the respective marks in the above-mentioned drawings are: 1. Base frame; 101. First support frame; 102. Second support frame; 103. Third support frame;

[0035] 2. Driving clamping member;

[0036] 201. Adjusting ring; 202. Clamping roller; 203. Bending rod; 204. Arc-shaped rack; 205. First motor; 206. First gear; 207. First rotating shaft;

[0037] 211. Outer gear ring; 212. Second gear; 213. First pulley; 214. Second pulley; 215. First belt; 216. Second motor;

[0038] 221. Second rotating shaft; 222. Third gear; 223. Fourth gear; 224. Fifth gear; 225. Third rotating shaft; 226. Sixth gear; 227. Seventh gear; 228. Eighth gear; 229. Fourth rotating shaft; 2210. Ninth gear; 2211. Tenth gear; 2212. Eleventh gear; 2213. Twelfth gear;

[0039] 3. X-direction compensation clamping member; 301. First lead screw; 302. Third motor; 303. First lead screw nut;

[0040] 4. Z-direction compensation clamping member; 401. Second lead screw; 402. Fourth motor; 403. Second lead screw nut;

[0041] 501. Lifting table; 502. Slide rail frame; 503. Frame; 504. First screw rod; 505. Slide bar; 506. Tray; 507. Second return spring; 508. Fifth motor; 509. Threaded sleeve;

[0042] 601. Mounting bracket; 602. Fifth rotating shaft; 603. Sixth motor; 604. First bevel gear; 605. Second bevel gear; 606. Third bevel gear; 607. Fourth bevel gear; 608. Short connecting rod; 609. Circular plate;

[0043] 7. Laser welding torch;

[0044] 8. Wire feeding member; 801. Wire feeding body; 802. Fixed rod; 803. Second screw; 804. L-shaped connecting rod; 805. Nut; 806. Distance sensor;

[0045] 9. Vision sensor. Detailed implementation manners

[0046] The following further describes in detail the specific implementation manners of the present invention with reference to the accompanying drawings.

[0047] In the present invention, the orientation words such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", etc. are all based on Figure 3 the direction defined by the cross-shaped orientation mark in the figure. Each orientation word in the present invention is described based on this definition and does not change the orientation it represents with the change of the angle of the figure. A vertical motor means that the output shaft of the motor is perpendicular to the ground, and a horizontal motor means that the output shaft of the motor is parallel to the ground.

[0048] As Figure 1 , Figure 2 , Figure 3 , Figure 12 , Figure 15 shown, an efficient laser welding device for aluminum alloy profiles provided by the present invention includes a base frame 1 and driving and clamping members 2 symmetrically arranged at the front and rear ends of the top of the base frame 1 for driving two workpieces to rotate synchronously and the clamping distance of which can be adjusted. An x-direction compensation clamping member 3 that can move left and right and the clamping distance of which can be adjusted and a z-direction compensation clamping member 4 that can move up and down and the clamping distance of which can be adjusted are arranged between the two driving and clamping members 2; a lifting table 501 with an adjustable height is arranged beside the x-direction compensation clamping member 3 and the z-direction compensation clamping member 4, and an installation frame 601 with an adjustable position in the y-direction is installed on the lifting table 501, and a laser welding torch 7 is installed on the installation frame 601.

[0049] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7As shown, the driving clamping member 2 includes a clamping unit and a driving unit for driving the three clamping rollers 202 in the clamping unit to rotate; the clamping unit includes an adjusting ring 201 rotatably mounted on a notch on a vertical surface on one side of the first support frame 101, three clamping rollers 202 that can move away from or close to the center point of the adjusting ring 201 as the adjusting ring 201 rotates, and a horizontal first motor 205 fixedly mounted on a side of the first support frame 101 away from the adjusting ring 201; the clamping rollers 202 are rotatably mounted on the bending At one end of the rod 203, a small slider is provided on the surface of the bending rod 203 close to the adjusting ring 201, and small slide grooves are opened on the adjusting ring 201 for each small slider to slide back and forth radially along the adjusting ring 201; the end of the bending rod 203 away from the clamping roller 202 is rotatably mounted on the first support frame 101 through a horizontal first rotating shaft 207; an arc-shaped rack 204 is fixedly mounted at the cutout of the adjusting ring 201, and a first gear 206 meshing with the arc-shaped rack 204 is fixedly mounted on the output shaft of the first motor 205. The driving unit includes an outer gear ring 211 rotatably mounted on the first support frame 101 and capable of rotating around the y direction, and three second gears 212 respectively fixedly mounted on the first rotating shaft 207 and meshing with the outer gear ring 211. The end of the first rotating shaft 207 away from the second gear 212 is fixedly sleeved with a first pulley 213, a second pulley 214 is fixedly mounted on the clamping roller 202, and the first pulley 213 and the second pulley 214 on the same bending rod 203 are connected through a first belt 215. A horizontal second motor 216 is fixedly mounted on the base frame 1, and the second motor 216 drives the outer gear rings 211 in the two driving clamps 2 to rotate synchronously through a transmission member. The transmission member includes a horizontal second rotating shaft 221 and a third gear 222 fixedly mounted on an end of the second rotating shaft 221 away from the second motor 216. The third gear 222 is meshed with the outer gear ring 211 of the driving clamping member 2 located at the rear side through a fourth gear 223. A fifth gear 224 is fixedly mounted on an end of the second rotating shaft 221 close to the second motor 216. A horizontal third rotating shaft 225 is provided below the second rotating shaft 221. A sixth gear 226 and a seventh gear 227 are fixedly mounted on both ends of the third rotating shaft 225. The fifth gear 224 is transmission-connected to the sixth gear 226 through an eighth gear 228. The seventh gear 22 A horizontal fourth rotating shaft 229 is arranged above 7, and a ninth gear 2210 and a tenth gear 2211 are fixedly installed at both ends of the fourth rotating shaft 229 respectively, and the tenth gear 2211 is transmission-connected to the outer gear ring 211 of the driving clamping member 2 located at the rear side through the eleventh gear 2212; the seventh gear 227 is transmission-connected to the ninth gear 2210 through the twelfth gear 2213; the second rotating shaft 221, the third rotating shaft 225, the fourth rotating shaft 229, the eighth gear 228, and the twelfth gear 2213 are all rotationally installed in the base frame 1, and the fourth gear 223 and the eleventh gear 2212 are rotationally installed in the first supporting frame 101 respectively.

[0050] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 As shown in the figure, the x-direction compensation clamping member 3 includes a second support frame 102 capable of sliding left and right on the top of the base frame 1 and a clamping unit mounted on the second support frame 102. A horizontal first lead screw 301 is arranged above the base frame 1, and the first lead screw 301 is perpendicular to the y-direction. A horizontal third motor 302 for driving the first lead screw 301 to rotate is fixedly installed on one side of the base frame 1. A first lead screw nut 303 matching the first lead screw 301 is arranged on the first lead screw 301, and the first lead screw nut 303 is fixedly connected to the second support frame 102. The z-direction compensation clamping member 4 includes a third support frame 103 capable of lifting, a clamping unit mounted on the third support frame 103, and a vertical second lead screw 401. A vertical fourth motor 402 for driving the second lead screw 401 to rotate is fixedly installed on the base frame 1. A second lead screw nut 403 matching the second lead screw 401 is arranged on the second lead screw 401, and the second lead screw nut 403 is fixedly connected to the third support frame 103;

[0051] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 12 、 Figure 13As shown, the lifting table 501 is slidably mounted on the slide rail frame 502. The slide rail frame 502 includes a upper plate and a lower plate that are parallel to each other, and two slide rails vertically installed between the upper plate and the lower plate for the lifting table 501 to slide up and down. The lower plate of the slide rail frame 502 is installed on the top of the frame 503; a first screw rod 504 is vertically and fixedly installed at the bottom of the lifting table 501, and the bottom of the first screw rod 504 sequentially passes through the bottom of the slide rail frame 502 and the top of the frame 503 and extends into the frame 503; a first return spring is sleeved outside the part of the slide rail between the lifting table 501 and the lower plate. The top of the first return spring is fixedly connected to the bottom of the lifting table 501, and the bottom of the first return spring is fixedly connected to the top of the lower plate; two vertical slide rods 505 are arranged in the frame 503, and a tray 506 is slidably mounted on the slide rods 505. A second return spring 507 is sleeved outside the part of the slide rod 505 between the tray 506 and the bottom plate of the frame 503. The top of the second return spring 507 is fixedly connected to the bottom of the tray 506, and the bottom of the second return spring 507 is fixedly connected to the top of the bottom plate of the frame 503; a vertical fifth motor 508 is fixedly installed at the bottom of the tray 506, and a threaded sleeve 509 that can rotate around the z-axis and is matched with the first screw rod 504 is vertically rotatably installed in the tray 506. The output shaft of the fifth motor 508 is fixedly connected to the threaded sleeve 509. Holes for the threaded sleeve 509 to pass through are provided at the bottom of the slide rail frame 502 and the top of the frame 503. A supporting roller that can rotate around the y-axis and is used to support the workpiece during welding is rotatably installed at one end of the tray 506 close to the workpiece. When the first return spring is in the natural elongation state, the lifting table 501 is at the highest point of its stroke; when the second return spring 507 is in the natural elongation state, the tray 506 is at the highest point of its stroke. A height limiting block for limiting the stroke height of the tray 506 is provided on the inner wall of the frame 503. The first return spring and the second return spring can play a buffering role. In the case of unevenness on the surface of the workpiece, the heights of the lifting table 501 and the supporting roller are slightly adjusted through the first return spring and the second return spring.

[0052] As Figure 1 , Figure 2 , Figure 3 , Figure 12 , Figure 14As shown in the figure, a horizontal fifth rotating shaft 602 is rotatably installed in the lifting platform 501. The mounting bracket 601 is slidably installed on the fifth rotating shaft 602. A horizontal sixth motor 603 for driving the fifth rotating shaft 602 to rotate is fixedly installed on one side of the lifting platform 501. First bevel gears 604 and second bevel gears 605 are fixedly sleeved on both ends of the fifth rotating shaft 602 respectively. Vertical shafts are vertically rotatably installed on both sides of the top of the lifting platform 501. A third bevel gear 606 meshing with the first bevel gear 604 is installed at the bottom of the vertical shaft at the rear side, and a fourth bevel gear 607 meshing with the second bevel gear 605 is installed at the bottom of the vertical shaft at the front side. A short connecting rod 608 is vertically installed at the top of the vertical shaft. A circular plate 609 for pushing the mounting bracket 601 to slide on the fifth rotating shaft 602 is fixedly installed at the top of the end of the short connecting rod 608 away from the vertical shaft.

[0053] As Figure 1 , Figure 2 , Figure 3 , Figure 15 shown, a wire feeding member 8 for fixing the welding wire is provided beside the laser welding torch 7, and the angle between the wire feeding member 8 and the workpiece is adjustable. The wire feeding member 8 includes a fixing rod 802 whose one end is hinged to the left side of the laser welding torch 7. This end of the fixing rod 802 can rotate around the y-axis. The end of the fixing rod 802 away from the laser welding torch 7 is fixedly connected to the wire feeding body 801. A small bracket is provided on the left side of the mounting bracket 601. A second screw rod 803 is vertically rotatably installed in the small bracket. The bottom of the second screw rod 803 is hinged to one end of an L-shaped connecting rod 804. The end of the L-shaped connecting rod 804 away from the second screw rod 803 is hinged to the fixing rod 802. A nut 805 matching the second screw rod 803 is provided outside the part of the second screw rod 803 located in the small bracket; a distance sensor 806 for measuring the distance from the welding wire is provided on the right side of the laser welding torch 7. A vision sensor 9 for judging the alignment degree of the aluminum alloy round tubes to be welded is installed on the right side of the laser welding torch 7 above the welding positions of the two workpieces.

[0054] The working principle of the present invention is as follows: The two workpieces are respectively placed into the two driving clamping members 2 to ensure that their welding positions are initially aligned. The first motor 205 is started to drive the first gear 206 to rotate. The first gear 206 drives the adjusting ring 201 to rotate through the arc-shaped rack 204, so that the small slider slides in the small chute, driving the bending rod 203 to move, thereby making the three clamping rollers 202 approach the center point of the adjusting ring 201 to clamp the workpiece. After the workpiece is placed, the workpiece presses down the supporting roller, driving the second return spring 507 to be compressed. Because the distance between the lifting platform 501 and the tray 506 is relatively fixed at this time, the lifting platform 501 will also descend.

[0055] Use the vision sensor 9 to accurately judge whether two workpieces are aligned. If there is a height difference between the two workpieces or the workpiece is offset in the z direction, start the fourth motor 402 to drive the second lead screw 401 to rotate, so that the second lead screw nut 403 slides on the second lead screw 401, thereby adjusting the position of the third support frame 103 in the z direction to adjust the position of the workpiece and compensate for the offset of the workpiece in the z direction. If the two workpieces are offset in the x direction, start the third motor 302 to drive the first lead screw 301 to rotate, so that the first lead screw nut 303 slides on the first lead screw 301, thereby adjusting the position of the second support frame 102 in the x direction to adjust the position of the workpiece and compensate for the offset of the workpiece in the x direction. Ensure that the two workpieces are aligned.

[0056] After alignment, adjust the height of the lifting platform 501. Start the fifth motor 508, and the fifth motor 508 drives the threaded sleeve 509 to rotate. As the threaded sleeve 509 rotates, the first screw rod 504 gradually descends or ascends in the threaded sleeve 509, thereby driving the lifting platform 501 to rise or fall. When the lifting platform 501 reaches the appropriate height, when adjusting the position of the mounting bracket 601 in the y direction, start the sixth motor 603 to drive the fifth rotating shaft 602 to rotate. The fifth rotating shaft 602 drives the first bevel gear 604 and the second bevel gear 605 to rotate. The first bevel gear 604 drives the third bevel gear 606 to rotate, and the second bevel gear 605 drives the fourth bevel gear 607 to rotate, thereby driving the two vertical shafts to rotate. The vertical shafts drive the short connecting rod 608 to rotate, and the short connecting rod 608 drives the circular plate 609 to rotate synchronously and in the same direction, pushing the mounting bracket 601 on the fifth rotating shaft 602, thereby changing the position of the mounting bracket 601 in the y direction.

[0057] When the distance sensor recognizes that there is a deviation in the angle between the welding wire and the workpiece, rotate the nut 805 to move the second screw rod 803 up or down. The second screw rod 803 drives the L-shaped connecting rod 804 to move, and the L-shaped connecting rod 804 drives the fixed rod 802 to rotate, thereby changing the angle between the wire feeding body 801 and the horizontal direction, achieving the purpose of changing the angle between the welding wire and the workpiece.

[0058] The second motor 216 starts, driving the outer gear ring 211 to rotate. The outer gear ring 211 drives the three second gears 212 to rotate. The second gears 212 respectively drive the first rotating shaft 207 to rotate, so that the first pulley 213 rotates. The first pulley 213 drives the second pulley 214 to rotate through the first belt 215, so that the three clamping rollers 202 rotate, causing the workpiece to rotate with the rotation of the three clamping rollers 202 to cooperate with the welding operation.

[0059] When it is necessary to loosen the workpiece after welding is completed, the first motor 205 starts and the output shaft rotates in the reverse direction, so that the three clamping rollers 202 move away from the center point of the adjusting ring 201, loosening the workpiece.

[0060] It should be noted that the present invention is not limited to the specific structures shown in the accompanying drawings in the above embodiments, and various changes can be made within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A high-efficiency laser welding equipment for aluminum alloy profiles, characterized in that: It comprises a base frame (1) and a driving clamping member (2) symmetrically arranged at the front and rear ends of the top of the base frame (1) and used to drive two workpieces to rotate synchronously and with an adjustable clamping distance, wherein an x-direction compensating clamping member (3) capable of moving left and right and with an adjustable clamping distance and a z-direction compensating clamping member (4) capable of moving up and down and with an adjustable clamping distance are arranged between the two driving clamping members (2); A lifting platform (501) with adjustable height is arranged next to the x-direction compensating clamp (3) and the z-direction compensating clamp (4); a mounting frame (601) with adjustable position in the y-direction is mounted on the lifting platform (501); and a laser welding gun (7) is mounted on the mounting frame (601); The driving clamping member (2) comprises a clamping unit and a driving unit for driving the clamping unit to rotate; The clamping unit comprises three clamping rollers (202) that can rotate with the adjusting ring (201) to move away from or approach the center point of the adjusting ring (201) and a horizontal first motor (205); The clamping rollers (202) are rotatably mounted on one end of the bending rod (203), a small slider is provided on a surface of the bending rod (203) close to the adjustment ring (201), and a small slide groove is provided on the adjustment ring (201) for each small slider to slide back and forth radially along the adjustment ring (201); one end of the bending rod (203) away from the clamping roller (202) is rotatably mounted on the first support frame (101) via a horizontal first rotating shaft (207); An arc-shaped rack (204) is fixedly mounted on the cutout of the adjustment ring (201), and a first gear (206) meshing with the arc-shaped rack (204) is fixedly mounted on the output shaft of the first motor (205); The driving unit comprises an outer gear ring (211) that can rotate about the y direction and three second gears (212) that are respectively fixedly mounted on the first rotating shaft (207) and meshed with the outer gear ring (211); one end of the first rotating shaft (207) away from the second gears (212) is fixedly sleeved with a first belt pulley (213); a second belt pulley (214) is fixedly mounted on the clamping roller (202); and the first belt pulley (213) and the second belt pulley (214) on the same bending rod (203) are connected in transmission via a first belt (215); A horizontal second motor (216) is fixedly mounted on the base frame (1), and the second motor (216) drives the outer gear rings (211) in the two driving clamping members (2) to rotate synchronously via a transmission member.

2. The high-efficiency laser welding equipment for aluminum alloy profiles according to claim 1 is characterized in that: The x-direction compensating clamp (3) comprises a second support frame (102) capable of sliding left and right on the top of the base frame (1) and a clamping unit mounted on the second support frame (102); a horizontal first lead screw (301) is arranged above the base frame (1); a horizontal third motor (302) for driving the first lead screw (301) to rotate is fixedly mounted on one side of the base frame (1); a first lead screw nut (303) matching the first lead screw (301) is arranged on the first lead screw (301); and the first lead screw nut (303) is fixedly connected to the second support frame (102).

3. The high-efficiency laser welding equipment for aluminum alloy profiles according to claim 1 is characterized in that: The z-direction compensating clamp (4) comprises a third support frame (103) capable of being raised and lowered, a clamping unit mounted on the third support frame (103), and a vertical second lead screw (401); a vertical fourth motor (402) for driving the second lead screw (401) to rotate is fixedly mounted on the base frame (1); a second lead screw nut (403) matching the second lead screw (401) is arranged on the second lead screw (401); and the second lead screw nut (403) is fixedly connected to the third support frame (103).

4. The high-efficiency laser welding equipment for aluminum alloy profiles according to any one of claims 1 to 3, characterized in that: The lifting platform (501) is slidably mounted on a slide rail frame (502), the slide rail frame (502) comprising an upper plate and a lower plate parallel to each other and two slide rails vertically mounted between the upper plate and the lower plate for the lifting platform (501) to slide up and down, the slide rail frame (502) being mounted on the top of the frame (503); a first screw rod (504) is vertically fixedly mounted on the bottom of the lifting platform (501), the bottom of the first screw rod (504) extending into the frame (503); a first return spring is provided on the outer sleeve of a portion of the slide rail located between the lifting platform (501) and the lower plate, the top of the first return spring is fixedly connected to the bottom of the lifting platform (501), and the bottom of the first return spring is fixedly connected to the top of the lower plate; Two vertical slide bars (505) are arranged in the frame (503), a tray (506) is slidably mounted on the slide bars (505), a second return spring (507) is arranged on a portion of the outer sleeve of the slide bars (505) located between the tray (506) and the bottom plate of the frame (503), the top of the second return spring (507) is fixedly connected to the bottom of the tray (506), and the bottom of the second return spring (507) is fixedly connected to the top of the bottom plate of the frame (503); a vertical fifth motor (508) is fixedly mounted on the bottom of the tray (506), a threaded sleeve (509) matching the first screw rod (504) and capable of rotating about the z direction is vertically mounted in the tray (506), an output shaft of the fifth motor (508) is fixedly connected to the threaded sleeve (509), and holes for the threaded sleeve (509) to pass through are provided at the bottom of the slide rail frame (502) and the top of the frame (503).

5. The high-efficiency laser welding equipment for aluminum alloy profiles according to any one of claims 1 to 3, characterized in that: A fifth horizontal rotating shaft (602) is rotatably mounted in the lifting platform (501), and the mounting frame (601) is slidably mounted on the fifth rotating shaft (602). A sixth horizontal motor (603) for driving the fifth rotating shaft (602) to rotate is fixedly mounted on one side of the lifting platform (501), and a first bevel gear (604) and a second bevel gear (605) are respectively fixedly sleeved on both ends of the fifth rotating shaft (602). The two sides of the top of the lifting platform (501) are respectively vertically rotated. A vertical shaft is installed, a third bevel gear (606) meshing with the first bevel gear (604) is installed at the bottom of the vertical shaft located at the rear side, a fourth bevel gear (607) meshing with the second bevel gear (605) is installed at the bottom of the vertical shaft located at the front side, a short connecting rod (608) is vertically installed at the top of the vertical shaft, and a circular plate (609) for pushing the mounting frame (601) to slide on the fifth rotating shaft (602) is fixedly installed at the top of the end of the short connecting rod (608) away from the vertical shaft.

6. The high-efficiency laser welding equipment for aluminum alloy profiles according to any one of claims 1 to 3, characterized in that: A wire feeder (8) for fixing the welding wire and having an adjustable angle with the workpiece is arranged beside the laser welding gun (7), the wire feeder (8) comprising a fixing rod (802) having one end hinged to the left side of the laser welding gun (7), the fixing rod (802) having an end away from the laser welding gun (7) being fixedly connected to a wire feeder body (801), a small bracket is arranged on the left side of the mounting frame (601), a second screw rod (803) is vertically rotatably mounted in the small bracket, the bottom of the second screw rod (803) is hinged to one end of an L-shaped connecting rod (804), the end of the L-shaped connecting rod (804) away from the second screw rod (803) is hinged to the fixing rod (802), and a nut (805) matching the second screw rod (803) is arranged outside the portion of the second screw rod (803) located in the small bracket; A distance sensor (806) for measuring the distance to the welding wire is arranged on the right side of the laser welding gun (7).

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