Aluminum profile window multi-station laser welding device and method

Abstract

The application relates to the technical field of laser welding equipment, and discloses aluminum profile window multi-station laser welding equipment and a method thereof, which comprises a welding table, a window body and a heightening frame fixedly connected to the upper surface of the welding table. The upper end of the heightening frame is provided with a clamping and overturning mechanism for positioning and clamping and overturning adjustment of the window body. The two ends of the window body are provided with a first welding mechanism and an arc edge welding mechanism for automatically adjusting the welding position and the welding angle when the window body is overturned. The first welding mechanism and the arc edge welding mechanism can automatically adjust the welding position and the welding angle following the overturning posture of the window body, are suitable for arc-shaped corner weld seam welding on the upper single side of the window body, can lock the four-corner reference of the window by one-time clamping, can save the secondary positioning process of manual disassembly, and can completely solve the problems of poor penetration and window leakage caused by the blocking of the traditional tooling right bottom edge weld seam by the base and the dislocation of the secondary clamping reference.

Description

Technical Field

[0001] This invention relates to the field of laser welding equipment technology, and specifically provides a multi-station laser welding equipment and method for aluminum profile car windows. Background Technology

[0002] Currently, multi-station laser welding equipment is commonly used for corner welding of curved aluminum profile windows. A rotary table enables streamlined processing of workpiece loading / unloading, preheating, welding, and cooling, effectively improving overall production efficiency. Conventional welding equipment uses fixed fixtures to clamp the window profiles and performs laser welding at the four corners, meeting the sealing requirements of conventional rectangular windows and is widely used in the mass production of door and window profiles. For irregularly shaped windows with curved upper sides and straight lower edges, the industry generally uses a method of single-sided welding followed by manual flipping and re-welding to complete the overall welding process.

[0003] Existing welding equipment still has significant shortcomings in practical use. Conventional fixed fixtures can obstruct the bottom edge weld of car windows, making it impossible to complete the welding of all four corners in one go. Manual flipping and secondary clamping can easily cause the arc-shaped corner reference to shift, resulting in weld misalignment and uneven penetration. Furthermore, traditional equipment operates with workpiece flipping and welding torch adjustment independently, allowing manual adjustment of the welding angle only after flipping. This fails to adapt to changes in the arc-shaped contour on one side, resulting in poor quality and low yield of arc-shaped welds. Therefore, this invention proposes a multi-station adaptive flipping and positioning welding device and method. By using a flipping-synchronous automatic positioning and angle adjustment and a sequential welding structure, it solves the above-mentioned technical defects. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a multi-station laser welding equipment and method for aluminum profile car windows, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-station laser welding equipment for aluminum profile car windows, comprising a welding table, a car window body, and a riser fixedly connected to the upper surface of the welding table. The upper end of the riser is provided with a clamping and flipping mechanism for positioning, clamping, and adjusting the car window body. Both ends of the car window body are provided with a first welding mechanism and an arc-edge welding mechanism that automatically adjust the welding position and welding angle when the car window body is flipped. The first welding mechanism and the arc-edge welding mechanism can automatically adjust the welding position and welding angle according to the flipping posture of the car window body, adapting to the welding of the single-sided arc-shaped fillet weld on the upper part of the car window body.

[0006] Preferably, the arc-edge welding mechanism includes a third slide rail fixedly connected to the upper surface of the welding table, a third slider slidably connected to the outer surface of the third slide rail, a push cylinder fixedly connected to one side of the third slider, a movable frame fixedly connected to one end of the push cylinder, a second push ball slidably connected inside the movable frame, a second spring sleeved on the outer surface of the second push ball, a third gear rotatably connected to the upper surface of the movable frame, a third rotating slide rail fixedly connected to the upper surface of the third gear, a third sliding block slidably connected inside the third rotating slide rail, and a second welding arm fixedly connected to the upper surface of the third sliding block.

[0007] Preferably, a second toothed rod is fixedly connected to one side of the height-increasing frame, a third telescopic rod is fixedly connected to the inner side surface of the welding table, a pressing block is fixedly connected to the upper end of the third telescopic rod, a third toothed rod is fixedly connected to the side surface of the pressing block, and a third spring is sleeved on the outer surface of the third telescopic rod.

[0008] Preferably, the first welding mechanism includes a second slide rail fixedly connected to the upper surface of the welding table, a second slider slidably connected to the outer surface of the second slide rail, a second gear rotatably connected to the upper surface of the second slider, a second rotating slide rail rotatably connected to the upper surface of the second gear, a second sliding block slidably connected to the inside of the second rotating slide rail, a first welding arm fixedly connected to the upper surface of the second sliding block, a first toothed rod fixedly connected to the other side of the raising frame, a first pushing ball slidably connected to the inside of the second slider, and a first spring sleeved on the outer surface of the first pushing ball.

[0009] Preferably, the clamping and flipping mechanism includes a first slide rail fixedly connected to the upper surface of the riser, a first slider slidably connected to the outer surface of the first slide rail, a fixed frame fixedly connected to the upper surface of the first slider, a circular flipping frame rotatably connected to the upper surface of the first slider, a limit groove formed inside the circular flipping frame, an external toothed ring fixedly connected to the outer surface of the circular flipping frame, a rotating ring gear rotatably connected to the inside of the first slider, a clamping telescopic rod fixedly connected to the inside of the circular flipping frame, and a clamping protective plate fixedly connected to the top end of the clamping telescopic rod.

[0010] Preferably, a first telescopic rod is fixedly connected to the upper surface of the riser, a support plate is fixedly connected to the upper surface of the first telescopic rod, and a push spring is sleeved on the outer surface of the first telescopic rod. A second telescopic rod is fixedly connected to the upper surface of the welding table, a first support frame is fixedly connected to the upper surface of the second telescopic rod, a first clamping device is fixedly connected to the upper surface of the first support frame, a connecting base plate is fixedly connected to the bottom end of the first support frame, a second support frame is fixedly connected to the upper surface of the connecting base plate, and a second clamping device is fixedly connected to the upper surface of the second support frame.

[0011] Preferably, the third gear meshes with the second and third racks, the pressing block has one end of the third rack as an arc surface, and the upper left side of the pressing block is also an arc surface. The third slider is connected to the moving frame via a push cylinder, and the rear end of the third rotating slide rail has a circular groove, the size of which is adapted to the spherical size of the front end of the second spring.

[0012] Preferably, the second gear meshes with the first rack, and two first racks and two second racks are respectively provided and respectively provided at both ends of the two heightening frames. The rear end of the second rotating slide rail is provided with a circular groove, and the size of the groove is adapted to the spherical size of the front end of the first push ball.

[0013] Preferably, the first slider has a toothed groove inside, the rotating gear meshes with the toothed groove inside the first slider, the external toothed ring meshes with the rotating gear, and clamping protective plates are provided on the upper and lower sides of the window body to clamp the window body. The fixing frame is slidably connected inside the limiting groove. The first clamping device has two clamps for clamping the front end of the window body, and the second clamping device has two clamps, which are respectively provided on both sides of the window body.

[0014] A multi-station laser welding method for aluminum profile automotive windows includes the following steps: S1: Workpiece loading, locking and positioning: The upper single-sided window body with an arc corner is placed inside the circular flip frame and clamped by a clamping protective plate. At the same time, the other three sides are placed above the first support frame and the second support frame and clamped by the first clamping device and the second clamping device. S2: Welding the arc-shaped edge and right-angle edge: The first welding mechanism and the arc-shaped edge welding mechanism are activated simultaneously to weld the welds on the left and right sides. When welding the right side, the second slider moves along the direction of the second slide rail. When the second gear meshes with the first rack, the second gear is driven to rotate, thus making the first welding arm and the weld seam in the same straight line. The second sliding block slides inside the second rotating slide rail to move back and forth. Welding is carried out sequentially at four points. The third slider moves along the direction of the third slide rail. The second welding arm will mesh with the third rack when the third gear moves backward. When the second welding arm is first pushed to rotate to 45°, it continues... When moving backward, the moving frame will press the pressing block and the third toothed rod downward. When sliding to the limit position, the moving frame will be pushed by the push cylinder, thereby driving the second welding arm to move to the right. When the third gear meshes with the second toothed rod, the movement will continue, causing the second welding arm to rotate to a position that matches the arc-shaped fillet weld. After the two upper weldings are completed, the second slider and the third slider will move to the lower left and lower right welds for welding. When welding the lower left corner weld, the push cylinder will not push the moving frame but will drive the second welding arm forward, so that the lower left right angle can be welded. When welding the bottom side after flipping, the push cylinder will push to weld the arc-shaped corner weld. S3: Welding the bottom seam: First, release the first and second clamping devices. Then, move the clamping devices down using the second telescopic rod. The first slider slides above the first slide rail. The internal tooth groove of the first slider meshes with the rotating ring gear and the external tooth ring, thereby driving the circular flipping frame to rotate the window body 180°. After the window body is rotated, the clamped end flips to the support plate for support. Thus, the two welding mechanisms are continuously linked throughout the entire rotation process, adjusting the position and tilt angle of the welding arm in real time to match the spatial posture of the window's arc contour, avoiding interference between the tooling and the welding torch.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention uses a linear conveying fixture paired with a gear ring type 180° flipping clamping mechanism. The lifting spring support assembly buffers the impact force of the clamping, effectively avoiding scratches on the profile surface. The gear meshing flipping transmission is smooth, and the workpiece flipping is free from loosening or deviation throughout the process. The four corner references of the car window can be locked in one clamping, eliminating the need for manual disassembly and secondary positioning. This completely solves the defects of poor penetration and car window leakage caused by the bottom edge weld of the traditional fixture being blocked by the base and the misalignment of the secondary clamping reference.

[0016] 2. This invention, through the sequential linkage of dual laser welding robots and a flipping mechanism, allows the robots to synchronously and adaptively adjust the welding torch position and welding angle during workpiece flipping, eliminating the need for machine stoppage and individual fine-tuning of equipment posture. The segmented process of welding three sides first and then flipping to weld the bottom edge perfectly adapts to the single-sided arc-shaped car window structure. The longitudinal linear conveyor tooling enables parallel operation of multiple stations for loading, buffering, welding, and unloading. Two robots can simultaneously weld the arc-shaped weld seams on both sides of the car window, reducing the welding processing time of a single car window by 40%. The multi-station continuous production line operation significantly improves the efficiency of batch production. At the same time, the differentiated station layout reduces the number of flipping mechanisms, effectively reducing the overall manufacturing cost. Attached Figure Description

[0017] Figure 1 This is a front view of a multi-station laser welding equipment for aluminum profile car windows proposed in this invention; Figure 2 This is a cross-sectional view of the flipping mechanism of a multi-station laser welding equipment for aluminum profile car windows proposed in this invention; Figure 3 For the present invention Figure 2 Enlarged view of point A; Figure 4 This is a side sectional view of a multi-station laser welding equipment for aluminum profile car windows proposed in this invention; Figure 5 This is a cross-sectional view of the welding mechanism of a multi-station laser welding equipment for aluminum profile car windows proposed in this invention; Figure 6 This is a cross-sectional view of the second welding mechanism of a multi-station laser welding equipment for aluminum profile car windows proposed in this invention; Figure 7 This is a cross-sectional view of the second welding structure of a multi-station laser welding equipment for aluminum profile car windows proposed in this invention.

[0018] Legend: 1. Welding table; 2. Clamping and flipping mechanism; 201. First slide rail; 202. First slider; 203. Fixing frame; 204. Circular flipping frame; 205. Limiting groove; 206. External gear ring; 207. Rotary ring gear; 208. Clamping telescopic rod; 209. Clamping protective plate; 210. First telescopic rod; 211. Push spring; 212. Support plate; 213. Second telescopic rod; 214. Connecting base plate; 215. First support frame; 216. First clamping device; 217. Second support frame; 218. Second clamping device; 3. First welding mechanism; 301. Second slide rail; 302. Second slider; 303. Second gear; 3 04. Second rotating slide rail; 305. Second sliding block; 306. First welding arm; 307. First gear; 308. First push ball; 309. First spring; 4. Arc edge welding mechanism; 401. Third slide rail; 402. Third slider; 403. Push cylinder; 404. Moving frame; 405. Second push ball; 406. Second spring; 407. Third gear; 408. Third rotating slide rail; 409. Third sliding block; 410. Second welding arm; 411. Second gear; 412. Third telescopic rod; 413. Third spring; 414. Pressing block; 415. Third gear; 5. Window body; 6. Heightening frame. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0021] like Figures 1-7 The multi-station laser welding equipment for aluminum profile car windows shown includes a welding table 1, a car window body 5, and a riser 6 fixedly connected to the upper surface of the welding table 1. The upper end of the riser 6 is provided with a clamping and flipping mechanism 2 for positioning, clamping, and flipping adjustment of the car window body 5. The two ends of the welding table 1 are provided with a first welding mechanism 3 and an arc edge welding mechanism 4 that automatically adjust the welding position and welding angle when the car window body 5 is flipped. The first welding mechanism 3 and the arc edge welding mechanism 4 can automatically adjust the welding position and welding angle according to the flipping posture of the car window body 5, and are suitable for welding the single-sided arc-shaped fillet weld on the upper part of the car window body 5.

[0022] The arc-edge welding mechanism 4 includes a third slide rail 401 fixedly connected to the upper surface of the welding table 1. A third slider 402 is slidably connected to the outer surface of the third slide rail 401. A push cylinder 403 is fixedly connected to one side of the third slider 402. A moving frame 404 is fixedly connected to one end of the push cylinder 403. A second push ball 405 is slidably connected inside the moving frame 404. A second spring 406 is sleeved on the outer surface of the second push ball 405. A third gear 407 is rotatably connected to the upper surface of the moving frame 404. A third rotating slide rail 408 is fixedly connected to the upper surface of the third gear 407. A third sliding block 409 is slidably connected inside the third rotating slide rail 408. A second welding arm 410 is fixedly connected to the upper surface of the third sliding block 409. A second toothed rod 411 is fixedly connected to one side of the elevated frame 6. A third telescopic rod 412 is fixedly connected to the inner side surface of the welding table 1. A pressing block 414 is fixedly connected to the upper end of the third telescopic rod 412. A third toothed rod 415 is fixedly connected to the side surface of the pressing block 414. A third spring 413 is sleeved on the outer surface of the third telescopic rod 412. A third gear 407 meshes with the second toothed rod 411 and the third toothed rod 415. One end of the pressing block 414 with the third toothed rod 415 is an arc surface, and the upper left side of the pressing block 414 is an arc surface. A third slider 402 is connected to the moving frame 404 through a pushing cylinder 403. A circular groove is provided at the rear end of the third rotating slide rail 408, and the size of the groove is adapted to the spherical size of the front end of the second spring 406.

[0023] Furthermore, during the welding of the two weld seams on the left, the third slider 402 moves along the direction of the third slide rail 401. The second welding arm 410 will mesh with the third rack 415 when the third gear 407 moves backward. When the second welding arm 410 is first pushed to rotate to 45°, as it continues to move backward, the moving frame 404 will press the pressing block 414 and the third rack 415 downward. When it slides to the limit position, the moving frame 404 is pushed by the pushing cylinder 403, thereby driving the second welding arm 410 to move to the right. When the third gear 407 meshes with the second rack 411, it continues to move, causing the second welding arm 410 to rotate to a position that matches the arc-shaped fillet weld. After the two upper welds are completed, the second slider 302 and the third slider 402 move to the lower left and lower right welds for welding. When welding the lower left corner weld, the push cylinder 403 does not push the moving frame 404 to drive the second welding arm 410 forward, so that the lower left right angle can be welded. When welding the bottom side after flipping, the push cylinder 403 pushes to weld the arc-shaped corner weld.

[0024] The first welding mechanism 3 includes a second slide rail 301 fixedly connected to the upper surface of the welding table 1. A second slider 302 is slidably connected to the outer surface of the second slide rail 301. A second gear 303 is rotatably connected to the upper surface of the second slider 302. A second rotating slide rail 304 is rotatably connected to the upper surface of the second gear 303. A second sliding block 305 is slidably connected to the inside of the second rotating slide rail 304. A first welding arm 306 is fixedly connected to the upper surface of the second sliding block 305. A first toothed rod 307 is fixedly connected to the other side of the lifting frame 6. A first push ball 308 is slidably connected to the inside of the second slider 302. A first spring 309 is sleeved on the outer surface of the first push ball 308. The second gear 303 meshes with the first toothed rod 307. Two first toothed rods 307 and two second toothed rods 411 are respectively provided and respectively located at both ends of the two lifting frames 6. A circular groove is provided at the rear end of the second rotating slide rail 304, and the size of the groove is adapted to the spherical size of the front end of the first push ball 308.

[0025] Furthermore, when welding the two weld seams on the right side, the second slider 302 moves along the direction of the second slide rail 301. When the second gear 303 meshes with the first rack 307, the second gear 303 will be driven to rotate, so that the first welding arm 306 is on the same straight line as the weld seam, and moves back and forth by sliding the second sliding block 305 inside the second rotating slide rail 304.

[0026] The clamping and flipping mechanism 2 includes a first slide rail 201 fixedly connected to the upper surface of the riser 6. A first slider 202 is slidably connected to the outer surface of the first slide rail 201. A fixing frame 203 is fixedly connected to the upper surface of the first slider 202. A circular flipping frame 204 is rotatably connected to the upper surface of the first slider 202. A limit groove 205 is provided inside the circular flipping frame 204. An external toothed ring 206 is fixedly connected to the outer surface of the circular flipping frame 204. A rotating ring gear 207 is rotatably connected to the inside of the first slider 202. A clamping telescopic rod 208 is fixedly connected to the inside of the circular flipping frame 204. A clamping protective plate 209 is fixedly connected to the top end of the clamping telescopic rod 208. A first telescopic rod 210 is fixedly connected to the upper surface of the riser 6. A support plate 212 is fixedly connected to the upper surface of the first telescopic rod 210. A push spring 211 is sleeved on the outer surface of the first telescopic rod 210. A second telescopic rod 213 is fixedly connected to the upper surface of the welding table 1. The upper surface of the second telescopic rod 213 is fixedly connected to the first support frame 215, the upper surface of the first support frame 215 is fixedly connected to the first clamping device 216, the bottom end of the first support frame 215 is fixedly connected to the connecting base plate 214, the upper surface of the connecting base plate 214 is fixedly connected to the second support frame 217, the upper surface of the second support frame 217 is fixedly connected to the second clamping device 218, the inside of the first slider 202 is provided with a toothed groove, the rotating gear 207 is meshed with the toothed groove inside the first slider 202, the outer toothed ring 206 is meshed with the rotating gear 207, the upper and lower sides of the window body 5 are provided with clamping protective plates 209, the window body 5 is clamped by the clamping protective plates 209, the fixing frame 203 is slidably connected inside the limiting groove 205, the first clamping device 216 is provided with two clamping devices to clamp the front end of the window body 5, and the second clamping device 218 is provided with two, and is respectively provided on both sides of the window body 5.

[0027] Furthermore, the upper single-sided curved window body 5 is placed inside the circular flip frame 204 and clamped by the clamping protective plate 209. Simultaneously, the other three sides are placed above the first support frame 215 and the second support frame 217 and clamped by the first clamping device 216 and the second clamping device 218. After welding the four weld seams on three sides, the clamping devices 216 and 218 are released. The clamping devices are then moved downwards via the second telescopic rod 213, and the first slider 202 moves above the first slide rail 201. The sliding mechanism engages with the internal toothed grooves of the first slider 202 and the rotating ring gear 207 and the external toothed ring 206, thereby driving the circular flipping frame 204 to rotate the window body 5 180°. After the window body 5 is rotated, the clamped end flips to the support plate 212 for support, thereby achieving the function of flipping the window body 5. The meshing and flipping transmission of the toothed ring gear can achieve stable alignment of the arc-shaped fillet weld. The welding of the front and back sides of the window can be completed in one clamping, eliminating the need for manual disassembly and secondary positioning, and preventing defects such as insufficient penetration and window leakage caused by misalignment during secondary clamping.

[0028] A multi-station laser welding method for aluminum profile automotive windows includes the following steps: S1: Workpiece loading, locking and positioning: The upper single-sided window body 5 with an arc corner is placed inside the circular flipping frame 204 and clamped by the clamping protective plate 209. At the same time, the other three sides are placed above the first support frame 215 and the second support frame 217 and clamped by the first clamping device 216 and the second clamping device 218. S2: Welding the arc-shaped edge and the right-angle edge: The first welding mechanism 3 and the arc-shaped edge welding mechanism 4 are activated simultaneously to weld the welds on the left and right sides. When welding the right side, the second slider 302 moves along the direction of the second slide rail 301. When the second gear 303 meshes with the first rack 307, the second gear 303 will be driven to rotate, so that the first welding arm 306 is on the same straight line as the weld. It moves back and forth through the sliding block 305 inside the second rotating slide rail 304. First, four areas are welded in sequence. The third slider 402 moves along the direction of the third slide rail 401. The second welding arm 410 will mesh with the third rack 415 when the third gear 407 moves backward. When the second welding arm 410 is first pushed to rotate to 45°, it continues to rotate. When moving backward, the moving frame 404 will press the pressing block 414 and the third toothed rod 415 downward. When sliding to the limit position, the moving frame 404 will be pushed by the pushing cylinder 403, thereby driving the second welding arm 410 to move to the right. When the third gear 407 meshes with the second toothed rod 411, it will continue to move, causing the second welding arm 410 to rotate to a position that matches the arc-shaped fillet weld. After the two upper weldings are completed, the second slider 302 and the third slider 402 move to the lower left and lower right welds for welding. When welding the lower left corner weld, the pushing cylinder 403 will not push the moving frame 404 to drive the second welding arm 410 forward, so that the lower left right angle can be welded. When welding the bottom side after flipping, the pushing cylinder 403 will push to weld the arc-shaped corner weld. S3: Welding the bottom seam: First, release the first clamping device 216 and the second clamping device 218. Then, move the clamping device down through the second telescopic rod 213. The first slider 202 slides above the first slide rail 201. The internal tooth groove of the first slider 202 meshes with the rotating ring gear 207 and the external toothed ring 206, thereby driving the circular flipping frame 204 to rotate the window body 5 180°. After the window body 5 is rotated, the clamped end is flipped to the support plate 212 for support. Thus, the two welding mechanisms are continuously linked throughout the entire rotation process, and the position and tilt angle of the welding arm are adjusted in real time to match the spatial posture of the curved contour of the window, avoiding interference between the tooling and the welding gun.

[0029] Working principle: The upper single-sided curved window body 5 is placed inside the circular flip frame 204 and clamped by the clamping protective plate 209. Simultaneously, the other three sides are placed above the first support frame 215 and the second support frame 217 and clamped by the first clamping device 216 and the second clamping device 218. After fixing, the first welding mechanism 3 and the curved edge welding mechanism 4 are activated to simultaneously weld the welds on the left and right sides. During welding of the right side, the second slider 302 moves along the direction of the second slide rail 301. When the second gear 303 meshes with the first gear 307, the second gear 303 will be... The rotation is driven, so that the first welding arm 306 is aligned with the weld seam. It moves back and forth within the second rotating slide rail 304 via the second sliding block 305, welding four areas sequentially. The third slider 402 moves along the third slide rail 401. The second welding arm 410 engages with the third gear 415 as the third gear 407 moves backward. When the second welding arm 410 is first pushed and rotated to 45°, its continued backward movement causes the moving frame 404 to press down the pressing block 414 and the third gear 415. When it reaches its limit position, the cylinder 403 is pushed... The movable frame 404 is pushed, thereby moving the second welding arm 410 to the right. When the third gear 407 meshes with the second rack 411, it continues to move, causing the second welding arm 410 to rotate to a position suitable for the arc-shaped fillet weld. After the upper two welds are completed, the second slider 302 and the third slider 402 move to the lower left and lower right welds for welding. When welding the lower left corner weld, the push cylinder 403 does not push the movable frame 404 to move the second welding arm 410 forward, thus enabling welding of the lower left right angle. After flipping, when welding the bottom side, the push cylinder 403 pushes to weld the arc-shaped corner side. After welding is completed on the three sides above, the first clamping device 216 and the second clamping device 218 are released. The clamping device is moved down by the second telescopic rod 213 and slides above the first slide rail 201 by the first slider 202. The internal tooth groove of the first slider 202 meshes with the rotating ring gear 207 and the external toothed ring 206, thereby driving the circular flipping frame 204 to rotate the window body 5 180°. After the window body 5 is rotated, the clamped end is flipped to the support plate 212 for support. Thus, the two welding mechanisms are continuously linked throughout the entire rotation process, thereby completing the welding of the window body 5.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A multi-station laser welding equipment for aluminum profile car windows, comprising a welding table (1), a car window body (5), and a riser (6) fixedly connected to the upper surface of the welding table (1), characterized in that: The upper end of the height-increasing frame (6) is provided with a clamping and flipping mechanism (2) for positioning, clamping and flipping adjustment of the window body (5). The two ends of the window body (5) are provided with a first welding mechanism (3) and an arc edge welding mechanism (4) that automatically adjust the welding position and welding angle when the window body (5) is flipped. The first welding mechanism (3) and the arc edge welding mechanism (4) can automatically adjust the welding position and welding angle according to the flipping posture of the window body (5) to adapt to the welding of the arc-shaped fillet weld on the upper side of the window body (5).

2. The multi-station laser welding equipment for aluminum profile car windows according to claim 1, characterized in that: The arc edge welding mechanism (4) includes a third slide rail (401) fixedly connected to the upper surface of the welding table (1), a third slider (402) slidably connected to the outer surface of the third slide rail (401), a push cylinder (403) fixedly connected to one side of the third slider (402), a moving frame (404) fixedly connected to one end of the push cylinder (403), a second push ball (405) slidably connected inside the moving frame (404), a second spring (406) sleeved on the outer surface of the second push ball (405), a third gear (407) rotatably connected to the upper surface of the moving frame (404), a third rotating slide rail (408) fixedly connected to the upper surface of the third gear (407), a third sliding block (409) slidably connected inside the third rotating slide rail (408), and a second welding arm (410) fixedly connected to the upper surface of the third sliding block (409).

3. The multi-station laser welding equipment for aluminum profile car windows according to claim 2, characterized in that: A second toothed rod (411) is fixedly connected to one side of the height-increasing frame (6), a third telescopic rod (412) is fixedly connected to the inner side surface of the welding table (1), a pressing block (414) is fixedly connected to the upper end of the third telescopic rod (412), a third toothed rod (415) is fixedly connected to the side surface of the pressing block (414), and a third spring (413) is sleeved on the outer surface of the third telescopic rod (412).

4. The multi-station laser welding equipment for aluminum profile car windows according to claim 3, characterized in that: The first welding mechanism (3) includes a second slide rail (301) fixedly connected to the upper surface of the welding table (1), a second slider (302) slidably connected to the outer surface of the second slide rail (301), a second gear (303) rotatably connected to the upper surface of the second slider (302), a second rotating slide rail (304) rotatably connected to the upper surface of the second gear (303), a second sliding block (305) slidably connected to the inside of the second rotating slide rail (304), a first welding arm (306) fixedly connected to the upper surface of the second sliding block (305), a first toothed rod (307) fixedly connected to the other side of the heightening frame (6), a first pushing ball (308) slidably connected to the inside of the second slider (302), and a first spring (309) sleeved on the outer surface of the first pushing ball (308).

5. The multi-station laser welding equipment for aluminum profile car windows according to claim 1, characterized in that: The clamping and flipping mechanism (2) includes a first slide rail (201) fixedly connected to the upper surface of the riser (6), a first slider (202) slidably connected to the outer surface of the first slide rail (201), a fixed frame (203) fixedly connected to the upper surface of the first slider (202), a circular flipping frame (204) rotatably connected to the upper surface of the first slider (202), a limiting groove (205) is opened inside the circular flipping frame (204), an external toothed ring (206) is fixedly connected to the outer surface of the circular flipping frame (204), a rotating ring gear (207) is rotatably connected to the inside of the first slider (202), a clamping telescopic rod (208) is fixedly connected to the inside of the circular flipping frame (204), and a clamping protective plate (209) is fixedly connected to the top end of the clamping telescopic rod (208).

6. The multi-station laser welding equipment for aluminum profile car windows according to claim 5, characterized in that: The upper surface of the height-increasing frame (6) is fixedly connected to a first telescopic rod (210), the upper surface of the first telescopic rod (210) is fixedly connected to a support plate (212), the outer surface of the first telescopic rod (210) is sleeved with a push spring (211), the upper surface of the welding table (1) is fixedly connected to a second telescopic rod (213), the upper surface of the second telescopic rod (213) is fixedly connected to a first support frame (215), the upper surface of the first support frame (215) is fixedly connected to a first clamping device (216), the bottom end of the first support frame (215) is fixedly connected to a connecting base plate (214), the upper surface of the connecting base plate (214) is fixedly connected to a second support frame (217), and the upper surface of the second support frame (217) is fixedly connected to a second clamping device (218).

7. The multi-station laser welding equipment for aluminum profile car windows according to claim 3, characterized in that: The third gear (407) meshes with the second rack (411) and the third rack (415). The pressing block (414) has one end of the third rack (415) as an arc surface, and the upper left side of the pressing block (414) is an arc surface. The third slider (402) is connected to the moving frame (404) through the pushing cylinder (403). The rear end of the third rotating slide rail (408) is provided with a circular groove, and the size of the groove is adapted to the spherical size of the front end of the second spring (406).

8. The multi-station laser welding equipment for aluminum profile car windows according to claim 4, characterized in that: The second gear (303) meshes with the first rack (307). The first rack (307) and the second rack (411) are provided in twos and are respectively located at both ends of the two heightening frames (6). The rear end of the second rotating slide rail (304) is provided with a circular groove, and the size of the groove is adapted to the spherical size of the front end of the first push ball (308).

9. The multi-station laser welding equipment for aluminum profile car windows according to claim 6, characterized in that: The first slider (202) has a toothed groove inside. The rotating gear (207) meshes with the toothed groove inside the first slider (202). The external toothed ring (206) meshes with the rotating gear (207). The upper and lower sides of the window body (5) are provided with clamping protective plates (209). The window body (5) is clamped by the clamping protective plates (209). The fixing frame (203) is slidably connected inside the limiting groove (205). The first clamping device (216) has two clamps for the front end of the window body (5). The second clamping device (218) has two clamps, which are respectively set on both sides of the window body (5).

10. A multi-station laser welding method for aluminum profile automotive windows, applied to the multi-station laser welding equipment for aluminum profile automotive windows as described in any one of claims 1-9, characterized in that: Includes the following steps: S1: Workpiece loading, locking and positioning: The upper single-sided window body (5) with an arc corner is placed inside the circular flip frame (204) and clamped by the clamping protective plate (209). At the same time, the other three sides are placed above the first support frame (215) and the second support frame (217) and clamped by the first clamping device (216) and the second clamping device (218). S2: Welding the arc-shaped edge and the right-angle edge: Start the first welding mechanism (3) and the arc-shaped edge welding mechanism (4) to weld the welds on the left and right sides at the same time. When welding the right side, the second slider (302) moves along the direction of the second slide rail (301). When the second gear (303) meshes with the first rack (307), the second gear (303) will be driven to rotate, so that the first welding arm (306) is on the same straight line as the weld. The second sliding block (305) slides inside the second rotating slide rail (304) to move back and forth. First, weld the four sides in sequence. The third slider (402) moves along the direction of the third slide rail (401). The second welding arm (410) will mesh with the third rack (415) when the third gear (407) moves backward. When the second welding arm (410) is first pushed to rotate to 45°, it continues to rotate. When moving backward, the moving frame (404) will press down the pressing block (414) and the third toothed rod (415). When sliding to the limit position, the moving frame (404) will be pushed by the pushing cylinder (403), thereby driving the second welding arm (410) to move to the right. When the third gear (407) meshes with the second toothed rod (411), the movement will continue, causing the second welding arm (410) to rotate to a position that matches the arc-shaped fillet weld. After the two upper weldings are completed, the second slider (302) and the third slider (402) move to the lower left and lower right welds for welding. When welding the lower left corner weld, the pushing cylinder (403) will not push the moving frame (404) to drive the second welding arm (410) forward, so that the lower left right angle can be welded. When welding the bottom side after flipping, the pushing cylinder (403) will push to weld the arc-shaped corner weld. S3: Welding the bottom weld: First, release the first clamping device (216) and the second clamping device (218). Then, move the clamping device down through the second telescopic rod (213). The first slider (202) slides above the first slide rail (201). The internal tooth groove of the first slider (202) meshes with the rotating ring gear (207) and the external toothed ring (206), thereby driving the circular flipping frame (204) to rotate the window body (5) 180°. After the window body (5) is rotated, the clamped end flips onto the support plate (218). 2) Support is provided above, so that the two welding mechanisms work together continuously throughout the entire rotation process, adjusting the position and tilt angle of the welding arm in real time to match the spatial posture of the curved contour of the window, avoiding interference between the tooling and the welding gun. The spring support component buffers the impact force of the clamping, effectively preventing scratches on the surface of the profile; the gear meshing and rotating transmission is smooth, and there is no loosening or deviation of the workpiece during the entire rotation process. The four corner references of the window can be locked in one clamping, eliminating the need for manual disassembly and secondary positioning. This completely solves the defects of poor penetration and window leakage caused by the bottom edge weld of the traditional tooling being blocked by the base and the misalignment of the secondary clamping reference.

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