A multi-station laser welding equipment for automobile parts

Abstract

The present invention belongs to the technical field of laser welding, and discloses a multi-station laser welding device for automobile parts. The multi-station laser welding device for automobile parts comprises a bracket, a linear guide rail 1 is fixedly connected to the bracket, and a driving block 1 is slidably connected to the linear guide rail 1, a hydraulic cylinder 1 is fixedly connected to the driving block 1, and a rectangular frame is fixedly connected to the output end of the hydraulic cylinder 1, and a welding mechanism is arranged on the rectangular frame. The multi-station laser welding device for automobile parts can well limit the size of the shock-absorbing plate and the friction plate through the design of the welding mechanism, and limit them with the clamping mechanism, and can accurately position the weld, thereby improving the positioning speed of the weld, avoiding deviation, and reducing the damage to other parts of the workpiece caused by welding size deviation, thereby improving a certain production and processing efficiency and improving welding accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding, in particular to a multi-station laser welding device for automobile parts. Background Art

[0002] Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. Laser welding is one of the important aspects of the application of laser material processing technology. In the 1970s, it was mainly used for welding thin-walled materials and low-speed welding. The welding process is a heat conduction type, that is, the laser radiation heats the surface of the workpiece, and the surface heat diffuses to the inside through heat conduction. By controlling the width, energy, peak power and repetition frequency of the laser pulse, the workpiece is melted to form a specific molten pool. Due to its unique advantages, it has been successfully used in the precision welding of micro and small parts.

[0003] At present, for the welding between the shock absorber disc and the friction plate, when using laser welding, in some processing plants, most of them use manual hand-held welding to weld the items to be welded, but the manual hand-held method has low accuracy. Some processing plants use mechanical equipment with welding guns for welding, but the welding position still needs to be located by manual calibration. In addition, during the welding process, the welding position may be offset due to the jitter of the equipment operation, resulting in leakage, wrong welding, etc. Therefore, we urgently need a multi-station automotive parts laser welding equipment to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-station laser welding device for automobile parts, which solves the problems raised in the background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a multi-station automotive parts laser welding equipment, including a bracket, a linear guide rail is fixedly connected to the bracket, and a driving block is slidably connected to the linear guide rail, a hydraulic cylinder is fixedly connected to the driving block, and the output end of the hydraulic cylinder is fixedly connected to a rectangular frame, a welding mechanism is arranged on the rectangular frame, a processing table is arranged below the bracket, a rotating motor is fixedly connected to the processing table and corresponding to the bracket position, and the output end of the rotating motor is fixedly connected to the bottom end of the bracket, and a clamping mechanism is also arranged on the processing table and on the left side of the bracket;

[0006] The welding mechanism comprises:

[0007] A clamping assembly, the clamping assembly is used to clamp the workpiece and to position the welded workpiece, the clamping assembly includes a rectangular plate, the rectangular frame is fixedly connected to the second rotating motor, and the output end of the second rotating motor is fixedly connected to the rectangular plate, and the upper and lower sides of the rectangular plate are both provided with bending structures, and the two bending structures can be bent between the two to contact the upper and lower parts of the workpiece to form a clamp;

[0008] A positioning assembly, wherein the positioning assembly comprises a conveying structure and a weld positioning structure, wherein the conveying structure is mounted on a rectangular plate, and the weld positioning structure is mounted on the conveying structure, wherein the conveying structure is used to drive the weld positioning mechanism to adjust its position, and the weld positioning structure points in the direction of the workpiece to position the welding position;

[0009] A welding assembly, wherein the welding assembly is used to weld a workpiece;

[0010] The clamping mechanism is used to clamp the workpiece, and the clamping mechanism includes a driving assembly, a placement plate and a clamping member. The driving assembly is arranged on the processing table, the placement plate is installed on the driving assembly, and the clamping member is installed on the placement plate to pass through the workpiece to clamp and fix it.

[0011] Through the above technical solution, the rotating motor 1 can be used to drive the bracket to move the angle, which is used for unloading the workpiece after welding.

[0012] Preferably, the bending structure includes a U-shaped frame, and the upper and lower sides of the rectangular plate are fixedly connected to the U-shaped frame, the two U-shaped frames are fixedly connected to a drive motor, and the output ends of the two drive motors are fixedly connected to one end of a transmission rod, and the other end of the transmission rod is rotatably connected to the bearing in the corresponding bearing hole provided on the U-shaped frame, a connecting plate is fixedly connected to the transmission rod, and a rectangular through hole is provided on the front and rear sides of the two connecting plates, and the inner walls of both sides of the rectangular through hole are fixedly connected to a drive motor, and the output end of the drive motor is fixedly connected to the transmission rod, and a hydraulic cylinder is also provided in the rectangular through hole, and the hydraulic cylinder is also fixedly connected to the transmission rod.

[0013] Through the above technical scheme, the present application drives the transmission rod and the upper connecting plate to move at an angle through the driving motor 1, so that the connecting plate 1 and the rectangular plate form an L shape, and the angle formed is ninety degrees. When the connecting plate 1 is laid flat, the hydraulic cylinder 2 moves at an angle under the drive of the driving motor 2. The hydraulic cylinder 2 and the connecting plate 1 also form an L shape, and the angle formed is also ninety degrees, which is convenient for quickly positioning the workpiece position and can be fitted with the workpiece surface through movement. The connecting plate 1 also acts to block light and block the strong light formed by the contact between the laser and the workpiece. The driving motor 1 and the driving motor 2 are both rotating motors. The rotating motor 2 acts to enable the rectangular plate to change horizontally and vertically. The two changes can cope with different clamping methods, and the horizontal and vertical adjustments are also convenient for discharging the workpiece.

[0014] Preferably, the output end of the second hydraulic cylinder is fixedly connected to a trapezoidal plate, a rectangular groove is opened in the trapezoidal plate, one end of a spring shock absorber is fixedly connected to the inner wall of the rectangular groove, and the other end of the spring shock absorber is fixedly connected to a placement frame, and a plurality of rollers are rotatably connected to the placement frame through bearings in bearing holes.

[0015] Through the above technical scheme, the spring shock absorber of the present application is used to reduce the generated vibration. Seven rollers are used in the present application. The rollers act to contact both sides of the workpiece. When the workpiece rotates, the rollers cooperate with the support of hydraulic cylinder 2 to limit the workpiece.

[0016] Preferably, the transmission structure includes two linear guides, and the two linear guides are fixedly connected to the upper and lower sides of the rectangular plate. Two driving blocks are slidably connected in the two linear guides, and two connecting plates are fixedly connected to the two driving blocks on the upper and lower sides. The weld positioning structure includes two rectangular through holes, three driving motors, three transmission rods, three hydraulic cylinders and a baffle. Two rectangular through holes are provided on the connecting plate two and on the side away from the two linear guides. The connecting plate two is fixedly connected to the driving motor three, and the output end of the driving motor three is fixedly connected to one end of the transmission rod three, and the other end of the transmission rod three passes through the connecting plate two and is rotatably connected to the bearing in the corresponding bearing hole on the connecting plate two. The transmission rod three is fixedly connected to the hydraulic cylinder three, and the output end of the hydraulic cylinder three is fixedly connected to the baffle.

[0017] Through the above technical scheme, the linear guide rail 2 of the present application is located on the side close to the workpiece, and two linear guide rails 2 are arranged on the upper and lower sides. The driving blocks 2 on the two linear guide rails 2 drive the connecting plate 2 to move relative to the side, so as to make the distance between the two baffles closer. The driving motor 3 drives the transmission rod 3 to rotate, so that the baffles on the hydraulic cylinder 3 on the transmission rod 3 move relatively, and the two baffles are moved close to the joint of the workpiece in cooperation with the hydraulic cylinder 3, so that the upper and lower baffles are respectively located at a certain distance above and below the joint of the workpiece, which is used to preliminarily locate the joint position, and then move the two baffles relatively to make the distance between the baffle and the joint closer, so as to guide the laser beam to a certain extent, so that the position of the laser welder can be quickly adjusted.

[0018] Preferably, a U-shaped frame 2 is fixedly connected to the inner side of the baffle plate located on the upper side, a driving motor 4 is fixedly connected to the U-shaped frame 2, an output end of the driving motor 4 is fixedly connected to one end of a transmission rod 4, and the transmission rod 4 is rotatably connected to a bearing in a corresponding bearing hole opened on the inner wall of the U-shaped frame 2, a cover plate is fixedly connected to the transmission rod 4, and a magnetic connector is fixedly connected to the inner side of the baffle plate located on the lower side, and the corresponding side of the cover plate is magnetically attracted to the magnetic connector, and the cover plate is fixedly connected to a U-shaped frame 3 on both the front and rear sides away from the baffle side.

[0019] Through the above technical solution, when the application is not in use, the cover and the baffle are placed on the same horizontal line. When in use, the cover is flipped downward by the drive of the transmission rod four on the drive motor four, and the cover is flipped and magnetically attracted to the magnetic connector. When the cover is flipped, it serves as a baffle to determine the position of the seam of the workpiece. The cover guides the subsequent laser beam to ensure that the position of the laser beam is at the seam position.

[0020] Preferably, the U-shaped frame three is fixedly connected to a drive motor five, the output end of the drive motor five is fixedly connected to one end of a transmission rod five, and the other end of the transmission rod five is rotatably connected to a bearing in a corresponding bearing hole opened on the inner wall of the U-shaped frame three, one end of a connector is fixedly connected to the transmission rod five, and the other end of the connector is fixedly connected to a guide, and a guide through hole is opened at the center of the cover plate.

[0021] Through the above technical scheme, the guides on the front and rear sides of the present application are designed with different specifications. Because the laser beam is adjusted to set beams of different thicknesses to correspond to workpiece joints of different sizes, the guide through-holes on the cover plate correspond to the joints. When the drive motor five drives the transmission rod five to drive the guide on the connector to flip, the guide is located in the guide through-hole, and the center line position of the guide port is on the same horizontal line as the workpiece joint. The guide port is conical in design, which is used to correctly guide the laser beam to avoid welding position deviation due to jitter of the laser beam. If a deviation occurs, the laser beam will directly contact the inner wall of the guide, thereby protecting the workpiece.

[0022] Preferably, the welding assembly includes a controller, which is fixedly connected to a rectangular plate, a rectangular through hole three is opened at the center of the rectangular through hole three, a linear guide three is fixedly connected to the front and rear sides of the rectangular through hole three, a driving block three is slidably connected to two of the linear guides three, a linear guide four is fixedly connected to the driving block three, a driving block four is slidably connected to the upper part of the linear guide four, and opposite sides of the two driving blocks four are fixedly connected to a support frame, a laser welder is arranged in the rectangular through hole three, and the laser welder is fixedly connected to the support frame, the laser welder is electrically connected to the controller through a wiring harness, a goggles are fixedly connected to the front and rear sides of the rectangular plate, and a visual sensor is fixedly connected to the two goggles.

[0023] Through the above technical scheme, the linear guide rail three of the present application drives the driving block three to move to the right, that is, along the X-axis direction, to drive the laser welder close to the workpiece, and the linear guide rail four drives the driving block four to move along the Y-axis direction to adjust the position of the laser welder, and the controller is used to control the laser welder.

[0024] Preferably, the driving assembly includes a driving motor 6, which is fixedly connected to a placement slot provided on the processing table, the output end of the driving motor 6 is fixedly connected to a turntable, the upper surface of the turntable is fixedly connected to a hydraulic cylinder 4, the clamping member includes a polygonal rod, a hydraulic cylinder 5, a limit plate 1, a square slot, a hydraulic cylinder 6, a driving motor 7, a transmission rod 6 and a limit plate 2, the output end of the hydraulic cylinder 4 is fixedly connected to the polygonal rod, the front and rear sides of the polygonal rod are fixedly connected to the hydraulic cylinder 5 through the placement slot, the output ends of the two hydraulic cylinders 5 are fixedly connected to the limit plate 1, square slots are provided on the left and right sides above the polygonal rod, the front and rear inner walls of the square slot are fixedly connected to the hydraulic cylinder 6, the driving motor 7 is fixedly installed between the side walls of the output ends of the two hydraulic cylinders 6, and the output end of the driving motor 7 is fixedly connected to the transmission rod 6, and the transmission rod 6 is fixedly connected to the limit plate 2.

[0025] Through the above technical scheme, since circular holes are opened at the center positions of the shock-absorbing disc and the friction plate in this application, the diameter of the polygonal rod in this application is smaller than the diameter of the circular hole. When the two discs are combined and inserted into the polygonal rod, the hydraulic cylinder five drives the limit plate one to extend outward and contact and limit the inner wall of the circular hole. The driving motor seven drives the limit plate two on the transmission rod six to flip over, so that the limit plate two is flush with the shock-absorbing disc and the friction plate, and then the limit plate two is driven by the output end of the hydraulic cylinder six to contact and limit the upper surface of the friction plate. A placement plate is arranged under the polygonal rod, which is designed as an integral part of the polygonal rod. The placement plate is smaller than the diameter of the shock-absorbing disc and the friction plate.

[0026] By adopting the above technical solution, the beneficial effects of the present invention are:

[0027] 1. This multi-station laser welding equipment for automotive parts can well limit the size of the shock absorber plate and the friction plate through the design of the welding mechanism, and limit it with the clamping mechanism, and can accurately position the weld, thereby improving the positioning speed of the weld, avoiding deviations, and reducing damage to other parts of the workpiece caused by welding size deviations, thereby improving certain production and processing efficiency and improving welding accuracy.

[0028] 2. This multi-station laser welding equipment for automotive parts can adapt to shock absorber discs and friction plates of different sizes and firmly clamp them through the setting of the clamping mechanism. In combination with the clamping assembly, it can improve the stability of the workpiece during rotation, and improve the welding accuracy and clamping stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the top view structure of the present invention;

[0031] Figure 3 For the present invention Figure 2 AA cross-sectional structure diagram;

[0032] Figure 4 For the present invention Figure 2 Schematic diagram of the cross-sectional structure of the middle BB;

[0033] Figure 5 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0034] Figure 6 For the present invention Figure 3 The enlarged structural diagram at B in the middle;

[0035] Figure 7 It is a side view structural schematic diagram of the present invention;

[0036] Figure 8 For the present invention Figure 7 Schematic diagram of the cross-sectional structure of the CC;

[0037] Fig. 9 For the present invention Figure 8 The enlarged structural diagram at C in the middle;

[0038] Fig.10 For the present invention Figure 7 Enlarged structural diagram at point D in the middle.

[0039] In the figure: 1. bracket; 2. linear guide rail 1; 3. drive block 1; 4. hydraulic cylinder 1; 5. rectangular frame; 6. welding mechanism; 7. processing table; 8. rotating motor 1; 9. clamping mechanism; 13. rotating motor 2;

[0040] 61. Clamping assembly; 611. Rectangular plate; 612. U-shaped frame 1; 613. Driving motor 1; 614. Transmission rod 1; 615. Connecting plate 1; 616. Rectangular through hole 1; 617. Driving motor 2; 618. Transmission rod 2; 619. Hydraulic cylinder 2; 6120. Trapezoidal plate; 6121. Spring shock absorber; 6122. Placement frame; 6123. Roller; 6124. Rectangular groove;

[0041] 62. Positioning assembly; 621. Linear guide rail 2; 622. Drive block 2; 623. Connecting plate 2; 624. Rectangular through hole 2; 625. Drive motor 3; 626. Drive rod 3; 627. Hydraulic cylinder 3; 628. Baffle; 629. U-shaped frame 2; 6210. Drive motor 4; 6211. Drive rod 4; 6212. Cover plate; 6213. Magnetic connector; 6214. U-shaped frame 3; 6215. Drive motor 5; 6216. Drive rod 5; 6217. Connector; 6218. Guide; 6219. Guide through hole;

[0042] 63. Welding assembly; 631. Controller; 632. Rectangular through hole three; 633. Linear guide rail three; 634. Drive block three; 635. Linear guide rail four; 636. Drive block four; 637. Support frame; 638. Laser welder; 639. Eye shield; 6310. Visual sensor;

[0043] 91. Drive motor six; 92. Turntable; 93. Hydraulic cylinder four; 94. Multi-sided rod; 95. Hydraulic cylinder five; 96. Limit plate one; 97. Square slot; 98. Hydraulic cylinder six; 99. Drive motor seven; 910. Transmission rod six; 911. Limit plate two.

[0044] 10. Shock absorber plate; 11. Friction plate; 12. Placement plate. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] See also Figure 1-10The present invention provides a technical solution: a multi-station laser welding device for automobile parts, comprising a bracket 1, a linear guide rail 2 is fixedly connected to the bracket 1, and a driving block 3 is slidably connected to the linear guide rail 2, a hydraulic cylinder 4 is fixedly connected to the driving block 3, a rectangular frame 5 is fixedly connected to the output end of the hydraulic cylinder 4, a welding mechanism 6 is arranged on the rectangular frame 5, a processing table 7 is arranged below the bracket 1, a rotating motor 8 is fixedly connected to the processing table 7 and corresponds to the position of the bracket 1, and the output end of the rotating motor 8 is fixedly connected to the bottom end of the bracket 1, and a clamping mechanism 9 is also arranged on the processing table 7 and located on the left side of the bracket 1;

[0047] The welding mechanism 6 includes:

[0048] A clamping assembly 61, wherein the clamping assembly 61 is used to clamp the workpiece and to position the welded part;

[0049] A positioning assembly 62, the positioning assembly 62 is used to locate the welding position on the workpiece;

[0050] A welding assembly 63, wherein the welding assembly 63 is used to weld the workpiece;

[0051] The clamping mechanism 9 is used to clamp the workpiece.

[0052] The rotating motor 8 can be used to drive the bracket 1 to move the angle, which is used to discharge the workpiece after welding.

[0053] The clamping assembly 61 includes a rectangular plate 611, a rotating motor 13 is fixedly connected to the rectangular frame 5, and the output end of the rotating motor 13 is fixedly connected to the rectangular plate 611, and the upper and lower sides of the rectangular plate 611 are fixedly connected to a U-shaped frame 1 612, and the two U-shaped frames 1 612 are fixedly connected to a driving motor 1 613, and the output ends of the two driving motors 1 613 are fixedly connected to one end of a transmission rod 1 614, and the other end of the transmission rod 1 614 is fixedly connected to the U-shaped frame 1 612. A corresponding bearing hole is provided for bearing rotation connection, a connecting plate 615 is fixedly connected to the transmission rod 1 614, and rectangular through holes 616 are provided on the front and rear sides of the two connecting plates 615, and driving motors 617 are fixedly connected to the inner walls of both sides of the rectangular through holes 616, and the output end of the driving motor 617 is fixedly connected to the transmission rod 2 618, and a hydraulic cylinder 619 is also provided in the rectangular through hole 1 616, and the hydraulic cylinder 619 is also fixedly connected to the transmission rod 2 618.

[0054] In the present application, a driving motor 613 drives a connecting plate 615 on a transmission rod 614 to move an angle, so that the connecting plate 615 and the rectangular plate 611 form an L shape, and the angle formed is ninety degrees. When the connecting plate 615 is laid flat, the hydraulic cylinder 619 moves an angle under the drive of the driving motor 617. The hydraulic cylinder 619 and the connecting plate 615 also form an L shape, and the angle formed is also ninety degrees, which is convenient for quickly locating the workpiece position and can fit with the workpiece surface through movement. The connecting plate 615 also acts to block light and block the strong light formed by the contact between the laser and the workpiece. The driving motor 613 and the driving motor 617 are both rotating motors. The rotating motor 613 acts to enable the rectangular plate 611 to change horizontally and vertically. The two changes can cope with different clamping methods, and the horizontal and vertical adjustments are also convenient for discharging the workpiece.

[0055] The output end of the hydraulic cylinder 2 619 is fixedly connected to a trapezoidal plate 6120, a rectangular groove 6124 is opened in the trapezoidal plate 6120, one end of a spring shock absorber 6121 is fixedly connected to the inner wall of the rectangular groove 6124, and the other end of the spring shock absorber 6121 is fixedly connected to a placement frame 6122, and a plurality of rollers 6123 are rotatably connected to the placement frame 6122 through bearings in bearing holes.

[0056] The spring shock absorber 6121 of the present application is used to reduce the generated vibration. Seven rollers 6123 are used in the present application. The rollers 6123 act to contact both sides of the workpiece. When the workpiece rotates, the rollers 6123 cooperate with the support of the hydraulic cylinder 2 619 to limit the workpiece.

[0057] The positioning assembly 62 includes a linear guide rail 621, which is fixedly connected to the upper and lower sides of the rectangular plate 611. A driving block 622 is slidably connected inside the linear guide rail 621. A connecting plate 623 is fixedly connected to the driving blocks 622 on the upper and lower sides. A rectangular through hole 624 is provided on the connecting plate 623 and on the side away from the linear guide rail 621. A driving motor 3 625 is fixedly connected to the connecting plate 623, and the output end of the driving motor 3 625 is fixedly connected to one end of a transmission rod 3 626, and the other end of the transmission rod 3 626 passes through the connecting plate 623 and is rotatably connected to the bearing in the corresponding bearing hole on the connecting plate 623. A hydraulic cylinder 3 627 is fixedly connected to the transmission rod 3 626, and a baffle 628 is fixedly connected to the output end of the hydraulic cylinder 3 627.

[0058] The linear guide rail 2 621 of the present application is located on the side close to the workpiece, and two linear guide rails 2 621 are arranged on the upper and lower sides. The driving blocks 2 622 on the two linear guide rails 2 621 drive the connecting plate 2 623 to move relative to each other, so as to make the distance between the two baffles 628 closer. The driving motor 3 625 drives the transmission rod 3 626 to rotate, so that the baffles 628 on the hydraulic cylinder 3 627 on the transmission rod 3 626 move relatively, and cooperate with the hydraulic cylinder 3 627 to move the two baffles 628 close to the joint of the workpiece, so that the upper and lower baffles 628 are respectively located at a certain distance above and below the joint of the workpiece, which is used for preliminarily positioning the joint position, and then relatively moving the two baffles 628 so that the distance between the baffles 628 and the joint is closer, thereby guiding the laser beam to a certain extent, so that the position of the laser welder 638 can be quickly adjusted.

[0059] A U-shaped frame 629 is fixedly connected to the inner side of the baffle 628 located on the upper side, and a driving motor 6210 is fixedly connected to the U-shaped frame 629. The output end of the driving motor 6210 is fixedly connected to one end of a transmission rod 6211, and the transmission rod 6211 is rotatably connected to a corresponding bearing hole provided on the inner wall of the U-shaped frame 629. A cover plate 6212 is fixedly connected to the transmission rod 6211. A magnetic connector 6213 is fixedly connected to the inner side of the baffle 628 located on the lower side, and the corresponding side of the cover plate 6212 is magnetically attracted to the magnetic connector 6213. The cover plate 6212 is fixedly connected to a U-shaped frame 3 6214 on both the front and rear sides away from the baffle 628.

[0060] When the present application is not in use, the cover 6212 and the baffle 628 are placed on the same horizontal line. When in use, the cover 6212 is flipped downward by the drive of the transmission rod four 6211 on the drive motor four 6210. The cover 6212 flips over and is magnetically attracted to the magnetic connector 6213. When the cover 6212 flips over, it becomes the baffle 628 to determine the position of the seam of the workpiece. The cover 6212 guides the subsequent laser beam to ensure that the position of the laser beam is at the seam.

[0061] The U-shaped frame three 6214 is fixedly connected with a driving motor five 6215, the output end of the driving motor five 6215 is fixedly connected with one end of a transmission rod five 6216, and the other end of the transmission rod five 6216 is rotatably connected to the corresponding bearing hole opened on the inner wall of the U-shaped frame three 6214, one end of a connector 6217 is fixedly connected to the transmission rod five 6216, and the other end of the connector 6217 is fixedly connected with a guide 6218, and a guide through hole 6219 is opened at the center of the cover plate 6212.

[0062] The guides 6218 on the front and rear sides of the present application are designed with different specifications. Since the laser beam is adjusted to set beams of different thicknesses to correspond to workpiece joints of different sizes, the guide through hole 6219 on the cover plate 6212 corresponds to the joint. When the drive motor five 6215 drives the transmission rod five 6216 to drive the guide 6218 on the connector 6217 to flip, the guide 6218 is located in the guide through hole 6219, and the center line position of the guide 6218 port is on the same horizontal line as the workpiece joint. The guide 6218 port is conical in design, which is used to correctly guide the laser beam to avoid welding position deviation due to jitter of the laser beam. If a deviation occurs, the laser beam will directly contact the inner wall of the guide 6218, thereby protecting the workpiece.

[0063] The welding assembly 63 includes a controller 631, which is fixedly connected to the rectangular plate 611. A rectangular through hole 3 632 is opened at the center of the rectangular plate 611. Linear guide rails 3 633 are fixedly connected to the front and rear sides of the rectangular through hole 3 632. Drive blocks 3 634 are slidably connected to the two linear guide rails 3 633. Linear guide rails 4 635 are fixedly connected to the drive blocks 3 634. Drive blocks 4 636 are slidably connected to the upper side of the linear guide rails 4 635. Support frames 637 are fixedly connected to the opposite sides of the two drive blocks 4 636. A laser welder 638 is arranged in the rectangular through hole 3 632, and the laser welder 638 is fixedly connected to the support frame 637. The laser welder 638 is electrically connected to the controller 631 through a wiring harness. Goggles 639 are fixedly connected to the front and rear sides of the rectangular plate 611, and visual sensors 6310 are fixedly connected to the two goggles 639.

[0064] The linear guide rail three 633 of the present application drives the driving block three 634 to move toward the right direction, that is, along the X-axis direction, to drive the laser welder 638 to approach the workpiece. The linear guide rail four 635 drives the driving block four 636 to move along the Y-axis direction to adjust the position of the laser welder 638. The controller 631 is used to control the laser welder 638.

[0065] The clamping mechanism 9 includes a driving motor 6 91, which is fixedly connected to a placement slot provided on the processing table 7, and the output end of the driving motor 6 91 is fixedly connected to a turntable 92, and the upper surface of the turntable 92 is fixedly connected to a hydraulic cylinder 4 93, and the output end of the hydraulic cylinder 4 93 is fixedly connected to a polygonal rod 94, and the front and rear sides of the polygonal rod 94 are fixedly connected to hydraulic cylinders 5 95 through the placement slot, and the output ends of the two hydraulic cylinders 5 95 are fixedly connected to a limiting plate 1 96, and square grooves 97 are provided on the left and right sides above the polygonal rod 94, and the inner walls of the front and rear sides of the square groove 97 are fixedly connected to hydraulic cylinders 6 98, and a driving motor 7 99 is fixedly installed between the side walls of the output ends of the two hydraulic cylinders 6 98, and the output end of the driving motor 7 99 is fixedly connected to a transmission rod 6 910, and the transmission rod 6 910 is fixedly connected to a limiting plate 2 911.

[0066] In the present application, circular holes are provided at the center positions of the shock absorbing disc 10 and the friction plate 11. In the present application, the diameter of the polygonal rod 94 is smaller than the diameter of the circular hole. When the two discs are combined and inserted into the polygonal rod 94, the hydraulic cylinder 5 95 drives the limit plate 1 96 to extend outward and contact and limit the inner wall of the circular hole. The driving motor 7 99 drives the transmission rod 6 910 to flip the limit plate 2 911. After the limit plate 2 911 is flush with the shock absorbing disc 10 and the friction plate 11, the output end of the hydraulic cylinder 6 98 drives the limit plate 2 911 to contact and limit the friction plate 11. A placement disc 12 is provided below the polygonal rod 94, which is designed as an integral part of the polygonal rod 94. The placement disc 12 is smaller than the diameter of the shock absorbing disc 10 and the friction plate 11.

[0067] The present application adopts a horizontal clamping method, and in actual production, a vertical clamping method can also be adopted.

[0068] When the multi-station laser welding equipment for automobile parts is working, the operator inserts the shock-absorbing disc 10 and the friction plate 11 into each other through the through hole opened in the center and places them on the polygonal rod 94 in sequence. The shock-absorbing disc 10 contacts the placement disc 12 on the polygonal rod 94, and the friction plate 11 is located above and contacts the shock-absorbing disc 10. The hydraulic cylinder 5 95 on the polygonal rod 94 drives the limit plate 1 96 to move outward and makes the limit plate 1 96 contact and limit the inner wall of the through hole at the center of the shock-absorbing disc 10 and the friction plate 11. The driving motor 7 99 above the polygonal rod 94 drives the transmission rod 6 910 to flip, so that the limit plate 2 911 and the friction plate 11 are placed horizontally, and driven downward by the hydraulic cylinder 6 98. The limit plate 2 911 contacts and limits the surface of the friction plate 11. At this time, the sides of the shock-absorbing disc 10 and the friction plate 11 are aligned, and the hydraulic cylinder 4 93 drives the polygonal rod 94 to move upward, so that the shock-absorbing disc 10 and the friction plate 11 are moved to the processing position;

[0069] The linear guide rail 2 on the bracket 1 drives the driving block 3 to move, driving the rectangular frame 5 to be located at the position of the shock absorbing plate 10 and the friction plate 11, and the hydraulic cylinder 4 extends outward to make the rectangular plate 611 close to the position of the shock absorbing plate 10 and the friction plate 11. The driving motor 613 on the U-shaped frame 612 drives the connecting plate 615 on the transmission rod 614 to fold, so that the connecting plate 615 and the rectangular plate 611 are in an L shape, and the driving motor 617 drives the hydraulic cylinder 619 to fold and connect with the connecting plate 615. 15 is L-shaped, at this time, the trapezoidal plate 6120 on the second hydraulic cylinder 619 is respectively located above the friction plate 11 and below the shock absorbing plate 10, and the output ends of the two second hydraulic cylinders 619 drive the placement frame 6122 to move relatively, and the roller 6123 located in the upper placement frame 6122 contacts the upper surface of the friction plate 11, and the roller 6123 located in the lower placement frame 6122 contacts the lower surface of the shock absorbing plate 10, thereby clamping the friction plate 11 and the shock absorbing plate 10;

[0070] The linear guide rail 2 621 drives the connecting plate 2 623 on the driving block 2 622 to move relatively. When it moves to a relatively close position, the driving motor 3 625 drives the hydraulic cylinder 3 627 on the transmission rod 3 626 to move relatively sideways, so that a gap is formed between the two baffles 628. The upper baffle 628 and the lower baffle 628 are both located on the upper and lower sides of the gap formed by the shock-absorbing plate 10 and the friction plate 11, and the distance is equal. The hydraulic cylinder 3 627 drives the baffle 628 to move again and get closer to the weld to be welded. After that, the welding seam is determined, the driving motor 4 6210 on the U-shaped frame 2 629 in the baffle 628 drives the transmission rod 4 6211 to drive the cover plate 6212 to flip, and the cover plate 6212 and the magnetic suction connector 6213 are magnetically attracted, and the U-shaped frame 3 6214 on one side is selected and the driving motor 5 6215 on the U-shaped frame 3 6214 drives the guide 6218 on the connector 6217 to flip to the center position of the guide through hole 6219. At this time, the port of the guide 6218 is just opposite to the position of the welding seam to be required;

[0071] The linear guide rail three 633 drives the driving block three 634 to move, and drives the laser welder 638 to contact the bracket provided in the guide 6218. If the laser welder 638 has position deviation, it is adjusted by the driving block four 636 on the linear guide rail four 635. After the adjustment, the laser welder 638 and the guide 6218 are in the same position, and then they are in contact with the guide 6218. The driving motor six 91 on the processing table 7 is started to drive the shock absorbing plate 10 and the friction plate 11 on the polygonal rod 94 on the turntable 92 to rotate. The laser welder 638 is started by the controller 631, and the laser beam is emitted through the guide 6218 to weld the contact point between the shock absorbing plate 10 and the friction plate 11. The roller 6123 rotates with the shock absorbing plate 10 and the friction plate 11. The visual sensor 6310 on the eye shield 639 observes the welding condition and the previous docking condition. The transmitted video is convenient for the operator to observe.

[0072] When welding is completed, the limiting plate 1 96 and the limiting plate 2 911 in the clamping mechanism 9 cancel the limiting and the material is discharged.

[0073] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0074] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-station laser welding device for automobile parts, comprising a bracket, characterized in that: A linear guide rail is fixedly connected to the bracket, and a driving block is slidably connected to the linear guide rail, a hydraulic cylinder is fixedly connected to the driving block, an output end of the hydraulic cylinder is fixedly connected to a rectangular frame, a welding mechanism is provided on the rectangular frame, a processing table is provided below the bracket, a rotating motor is fixedly connected to the processing table and at a position corresponding to the bracket, and the output end of the rotating motor is fixedly connected to the bottom end of the bracket, and a clamping mechanism is also provided on the processing table and on the left side of the bracket; The welding mechanism comprises: A clamping assembly, the clamping assembly is used to clamp the workpiece and to position the welded workpiece, the clamping assembly includes a rectangular plate, the rectangular frame is fixedly connected to the second rotating motor, and the output end of the second rotating motor is fixedly connected to the rectangular plate, and the upper and lower sides of the rectangular plate are both provided with bending structures, and the two bending structures can be bent between the two to contact the upper and lower parts of the workpiece to form a clamp; A positioning assembly, wherein the positioning assembly comprises a conveying structure and a weld positioning structure, wherein the conveying structure is mounted on a rectangular plate, and the weld positioning structure is mounted on the conveying structure, wherein the conveying structure is used to drive the weld positioning mechanism to adjust its position, and the weld positioning structure points in the direction of the workpiece to position the welding position; A welding assembly, wherein the welding assembly is used to weld a workpiece; The clamping mechanism is used to clamp the workpiece, and the clamping mechanism includes a driving assembly, a placement plate and a clamping member, the driving assembly is arranged on the processing table, the placement plate is installed on the driving assembly, and the clamping member is installed on the placement plate to pass through the workpiece to clamp and fix it; The bending structure includes a U-shaped frame, and the upper and lower sides of the rectangular plate are fixedly connected to the U-shaped frame, and the two U-shaped frames are fixedly connected to a driving motor, and the output ends of the two driving motors are fixedly connected to one end of a transmission rod, and the other end of the transmission rod is rotatably connected to the bearing in the corresponding bearing hole provided on the U-shaped frame, and a connecting plate is fixedly connected to the transmission rod, and a rectangular through hole is provided on the front and rear sides of the two connecting plates, and the inner walls of both sides of the rectangular through hole are fixedly connected to a driving motor, and the output end of the driving motor is fixedly connected to the transmission rod, and a hydraulic cylinder is also provided in the rectangular through hole, and the hydraulic cylinder is also fixedly connected to the transmission rod.

2. The multi-station laser welding equipment for automobile parts according to claim 1 is characterized in that: The output end of the second hydraulic cylinder is fixedly connected to a trapezoidal plate, a rectangular groove is opened in the trapezoidal plate, one end of a spring shock absorber is fixedly connected to the inner wall of the rectangular groove, and the other end of the spring shock absorber is fixedly connected to a placement frame, and a plurality of rollers are rotatably connected to the placement frame through bearings in bearing holes.

3. The multi-station laser welding equipment for automobile parts according to claim 2 is characterized in that: The transmission structure includes two linear guides, which are fixedly connected to the upper and lower sides of the rectangular plate. Two driving blocks are slidably connected in the two linear guides, and two connecting plates are fixedly connected to the two driving blocks on the upper and lower sides. The weld positioning structure includes two rectangular through holes, three driving motors, three transmission rods, three hydraulic cylinders and a baffle. Two rectangular through holes are provided on the connecting plate two and on the side away from the two linear guides. The connecting plate two is fixedly connected to the driving motor three, and the output end of the driving motor three is fixedly connected to one end of the transmission rod three, and the other end of the transmission rod three passes through the connecting plate two and is rotatably connected to the bearing in the corresponding bearing hole on the connecting plate two. The transmission rod three is fixedly connected to the hydraulic cylinder three, and the output end of the hydraulic cylinder three is fixedly connected to the baffle.

4. The multi-station laser welding equipment for automobile parts according to claim 3 is characterized in that: The inner side of the baffle plate located on the upper side is fixedly connected with a U-shaped frame 2, and a driving motor 4 is fixedly connected to the U-shaped frame 2, and the output end of the driving motor 4 is fixedly connected to one end of a transmission rod 4, and the transmission rod 4 is rotatably connected to the corresponding bearing hole opened on the inner wall of the U-shaped frame 2, and the transmission rod 4 is fixedly connected to a cover plate, and the inner side of the baffle plate located on the lower side is fixedly connected with a magnetic connector, and the corresponding side of the cover plate is magnetically attracted to the magnetic connector, and the cover plate is fixedly connected to a U-shaped frame 3 on both the front and rear sides away from the baffle.

5. The multi-station laser welding equipment for automobile parts according to claim 4 is characterized in that: The U-shaped frames are all fixedly connected with drive motors five, the output end of the drive motors five is fixedly connected with one end of a transmission rod five, and the other end of the transmission rod five is rotatably connected to a bearing in a corresponding bearing hole provided on the inner wall of the U-shaped frame three, one end of a connector is fixedly connected to the transmission rod five, and the other end of the connector is fixedly connected with a guide, and a guide through hole is provided at the center of the cover plate.

6. The multi-station laser welding equipment for automobile parts according to claim 5, characterized in that: The welding assembly includes a controller, which is fixedly connected to a rectangular plate, a rectangular through hole three is opened at the center of the rectangular through hole three, a linear guide three is fixedly connected to the front and rear sides of the rectangular through hole three, a driving block three is slidably connected to the two linear guides three, a linear guide four is fixedly connected to the driving block three, a driving block four is slidably connected to the upper part of the linear guide four, and a support frame is fixedly connected to the opposite sides of the two driving blocks four, a laser welder is arranged in the rectangular through hole three, and the laser welder is fixedly connected to the support frame, the laser welder is electrically connected to the controller through a wiring harness, a goggles are fixedly connected to the front and rear sides of the rectangular plate, and a visual sensor is fixedly connected to the two goggles.

7. The multi-station laser welding equipment for automobile parts according to claim 1, characterized in that: The driving assembly includes a driving motor 6, which is fixedly connected to a placement slot provided on the processing table. The output end of the driving motor 6 is fixedly connected to a turntable, and the upper surface of the turntable is fixedly connected to a hydraulic cylinder 4. The clamping member includes a polygonal rod, a hydraulic cylinder 5, a limit plate 1, a square slot, a hydraulic cylinder 6, a driving motor 7, a transmission rod 6 and a limit plate 2. The output end of the hydraulic cylinder 4 is fixedly connected to the polygonal rod, and the front and rear sides of the polygonal rod are fixedly connected to the hydraulic cylinder 5 through the placement slot. The output ends of the two hydraulic cylinders 5 are fixedly connected to the limit plate 1. Square slots are provided on the left and right sides above the polygonal rod, and the front and rear inner walls of the square slot are fixedly connected to the hydraulic cylinder 6. A driving motor 7 is fixedly installed between the side walls of the output ends of the two hydraulic cylinders 6, and the output end of the driving motor 7 is fixedly connected to the transmission rod 6, and the transmission rod 6 is fixedly connected to the limit plate 2.

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