Multi-station laser welding equipment

Abstract

The invention relates to the technical field of laser welding, and discloses multi-station laser welding equipment which comprises a feeding station, the feeding station comprises a working table and two conveying lines for conveying weldments, and two swing arms which are in bilateral symmetry and can rotate relatively are arranged on the working table; the two swing arms are each provided with a first clamping mechanism used for clamping a weldment on the conveying line. And the welding station comprises two second clamping mechanisms located above the working table, the two second clamping mechanisms can get away from each other to clamp the weldment on the first clamping mechanism, and the two second clamping mechanisms can get close to each other to splice the weldment. According to the laser welding equipment, in the process that the laser welding gun welds a weldment spliced by the two second clamping mechanisms, the two swing arms can drive the first clamping mechanism to move at the same time, so that the laser welding gun can rapidly conduct next welding operation, and the operation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of laser welding, and particularly to a multi-station laser welding device. Background Art

[0002] Laser welding equipment is a high-precision and high-efficiency welding process that uses a laser beam to locally heat the surface of a material to the melting point or vaporization point, causing it to melt and form a strong welded joint after solidification. Laser welding has very high positioning accuracy and welding quality, is suitable for welding of fine and complex structures, and because the diameter of the laser beam is small, the heat-affected area is small, reducing the thermal influence on the surrounding materials, avoiding deformation and cracks, and enabling efficient production. Generally speaking, laser welding equipment has a high degree of flexibility and adaptability, can meet various complex welding requirements, and is an important advanced processing technology in modern manufacturing.

[0003] Currently, when using laser welding equipment to produce door handles, workers need to separately place two symmetrical door handle shells into two positioning jigs, and use the mutual approach of the two jigs to close the door handles tightly, facilitating the laser welding gun to weld the connection between the two shells. After welding, the welded door handles in the jigs need to be taken out, and then the two positioning jigs need to be loaded with materials respectively before the welding gun can perform the next welding operation.

[0004] In the above operations during actual production, the loading and unloading by workers will occupy a relatively long operation time, resulting in the welding gun having to stagnate for a relatively long period of time (i.e., the time consumed during the loading and unloading process by workers) after a complete welding operation before it can start the next welding operation, delaying the production efficiency. Therefore, it is necessary to design a multi-station laser welding device to solve this problem. Summary of the Invention

[0005] Aiming at the above technical problems, the purpose of the present invention is to provide a multi-station laser welding device to solve the problem that the welding gun will stagnate for a long time while waiting for loading and unloading as mentioned in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A multi-station laser welding device includes:

[0008] A loading station, the loading station includes an operating table and two conveying lines for conveying workpieces, and two symmetrically arranged swing arms capable of relative rotation are provided on the operating table, and a clamping mechanism I for clamping the workpieces on the conveying lines is provided on each of the two swing arms;

[0009] Welding station, the welding station includes two clamping mechanisms II located above the working table. The two clamping mechanisms II can move away from each other to clamp the welded parts on the clamping mechanism I, and the two clamping mechanisms II can also move closer to each other to splice the welded parts. A laser welding gun for welding the spliced welded parts is arranged between the two clamping mechanisms II;

[0010] Receiving box, which is located directly below the welding station and is used to collect the welded parts after welding.

[0011] Preferably, one side of the swing arm is rotatably connected to a rotating arm that is perpendicular to it and located directly above the corresponding conveyor line. The clamping mechanism I is installed on one side of the bottom of the rotating arm; during the process of the swing arm rotating upward to the vertical state, the rotating arm will flip 180° along with it, and after reaching the vertical state, the clamping mechanism I can release the welded parts it clamps to exchange the welded parts to the clamping mechanism II; during the process of the swing arm rotating downward to the horizontal state, the rotating arm will flip and reset along with it, and after reaching the horizontal state, the clamping mechanism I clamps the corresponding welded parts on the conveyor line; the two clamping mechanisms II are always in a state of moving closer to each other, so that the welded parts clamped on the two clamping mechanisms II are spliced. When the two swing arms are in the vertical state, the two clamping mechanisms II can move away from each other to make them close to the clamping mechanism I for the exchange of welded parts.

[0012] Preferably, the clamping mechanism I includes a housing. Two symmetrically arranged movable arms are slidably inserted along the length direction of the bottom of the housing. Claw I is fixedly connected to the bottom of both movable arms. A stroke block is jointly hinged at the top of the two movable arms. A push rod that can be lifted and whose bottom is fixed to the stroke block is inserted into the top of the housing.

[0013] Preferably, fixed shafts are fixedly connected to both sides of the top of the working table. One side of the two swing arms is rotatably sleeved on the two fixed shafts through bearings. One side of the inner part of the swing arm is rotatably connected to a rotating shaft I through a bearing. Synchronous wheels are fixedly sleeved on both the fixed shaft and the rotating shaft I. A synchronous belt is wound between the two synchronous wheels through a toothed groove; one side of the inner wall of the swing arm is also rotatably connected to a connecting rod through a bearing. A driving spur gear is fixedly sleeved on the rotating shaft I. A driven spur gear that meshes with the driving spur gear is fixedly sleeved on the connecting rod. The rotating arm is connected to the inside of the swing arm, and a key groove is opened on one side of the rotating arm. A flat key inserted into the key groove is fixedly connected to one side of the connecting rod.

[0014] Preferably, a square rod is slidably inserted in the side of the rotating arm away from the swing arm, and an inclined connecting rod is hinged between one end of the square rod located outside the rotating arm and the top of the pushing rod, and one end of the square rod located inside the rotating arm is fixedly connected to a column block slidably inserted in the rotating arm, and one side of the column block is hinged with an inclined movable plate, and one side of the inner wall of the swing arm is fixedly connected to a slide rail along its length direction, and a sliding rod with one end hinged to the movable plate is slidably connected to the slide rail, and one side of the surface of the sliding rod is in contact with the flat key, and a moving component is provided on the rotating arm, which can move the column block away from the swing arm when the swing arm is rotated upward to a vertical state.

[0015] Preferably, the welding station also includes a top frame and two inner ring frames, the bottom of the top frame is fixedly connected to two symmetrical outer ring frames, and the two inner ring frames are respectively slidably inserted in the corresponding outer ring frames along the axial direction of the outer ring frame, a sliding groove that passes through the rotating arm is opened along its length direction, and a sliding block that is slidably inserted in the sliding groove is formed on the surface of the column block, and two symmetrical and arc-shaped positioning grooves are opened on one side of the sliding block, and the self-locking part includes a mounting frame fixedly connected to the surface of the rotating arm, a movable rod is hingedly connected to the side of the mounting frame facing the sliding block, a positioning block that is columnar and inserted in the corresponding positioning groove is fixedly connected to one side of the movable rod, and a spring for pressing the positioning block in the positioning groove is installed on the mounting frame, and a push plate is fixedly connected to the side of the outer ring frame facing the corresponding rotating arm, and a fixed plate with one side having an arc-shaped structure and corresponding to the push plate is fixedly connected to one side of the sliding block.

[0016] Preferably, the two outer annular frames are provided with an annular groove matching the inner annular frame on the sides away from each other, and the two annular grooves are fixedly connected with guide rods which are symmetrical up and down, and the two inner annular frames are respectively slidably sleeved on the two symmetrical guide rods, and each guide rod is sleeved with a spring three for pushing the two inner annular frames to approach each other, one side of the two inner annular frames is fixedly connected with a side rod, and one side of the two outer annular frames is rotatably connected with a rotating plate two which is inclined and in contact with the side rod, and the surfaces of the two rotating arms are fixedly connected with a pushing plate two corresponding to the rotating plate two.

[0017] Preferably, the second clamping mechanism includes a connecting frame slidably connected to the inner annular frame, and a second clamping jaw for clamping the weldment is provided at the bottom of the connecting frame, and when the two clamping mechanisms are close to each other, the two connecting frames can be synchronously approached to each other, so that the weldments on the two clamping jaws can be moved out of the inner annular frame and contact each other for splicing, thereby reserving working space for the laser welding gun.

[0018] Preferably, a support shaft in the left - right axial direction is fixedly connected to the top of the inner wall of the inner annular frame. A tilted rotating plate one is rotatably sleeved on the support shaft through a bearing. A linkage rod that is slidably inserted into the connecting frame is hinged to the bottom of the rotating plate one. A reserved groove is formed in the top of the inner annular frame, and the top of the rotating plate one extends into the reserved groove. A spring two for pushing the rotating plate one to rotate towards the outer annular frame is arranged in the reserved groove. A convex block fixedly sleeved on the guide rod and corresponding to the reserved groove is formed in the annular groove.

[0019] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0020] During the process of the laser welding gun welding the weldment spliced by the two clamping mechanisms two, the two swing arms will simultaneously drive the clamping mechanism one to move in position, so that the clamping mechanism one can pick up the weldment on the conveyor line and move to one side of the corresponding clamping mechanism two to wait for the laser welding gun to complete welding, realizing the synchronous progress of the welding and loading steps. After welding is completed, the two clamping mechanisms two can pick up and splice the weldment during a process of moving away from each other and resetting once, enabling the laser welding gun to quickly perform the next welding operation and improving the operation efficiency.

[0021] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation part; moreover, the parts not involved in the present invention are the same as or can adopt the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the drawings:

[0023] Figure 1 is a three - dimensional structural schematic diagram of the present invention;

[0024] Figure 2 is a schematic side - view structure diagram of the present invention;

[0025] Figure 3 is of the present invention Figure 2 structural schematic diagram of the cross - section along the A - A line;

[0026] Figure 4 is a schematic diagram of the swing - arm structure of the present invention;

[0027] Figure 5 is a disassembled schematic diagram of the swing - arm structure of the present invention;

[0028] Figure 6 is a schematic diagram of the clamping - mechanism structure of the present invention;

[0029] Figure 7Another structural schematic diagram of the clamping mechanism of the present invention;

[0030] Figure 8 Schematic diagram of the discharging state of the present invention;

[0031] Figure 9 Another schematic diagram of the discharging state of the present invention.

[0032] Description of the reference numerals

[0033] 1. Operating table; 2. Conveyor line; 3. Swing arm; 4. Clamping mechanism one; 5. Inner annular frame; 6. Clamping mechanism two; 7. Laser welding torch; 8. Receiving box; 9. Fixed shaft; 10. Rotating shaft one; 11. Synchronous pulley; 12. Synchronous belt; 13. Rotating arm; 14. Driving spur gear; 15. Driven spur gear; 16. Housing; 17. Movable arm; 18. Claw one; 19. Stroke block; 20. Push rod; 21. Connecting rod; 22. Flat key; 23. Square rod; 24. Linking rod one; 25. Cylindrical block; 26. Movable plate; 27. Slide rail one; 28. Slide bar; 29. Sliding groove; 30. Sliding block; 31. Positioning groove; 32. Mounting frame; 33. Movable rod; 34. Positioning block; 35. Spring one; 36. Top frame; 37. Outer annular frame; 38. Annular electric track; 39. Pushing plate one; 40. Fixed plate; 41. Guide rod; 42. Spring three; 43. Limit block; 44. Pushing plate two; 45. Groove; 46. Side rod; 47. Rotating plate two; 48. Connecting frame; 49. Claw two; 50. Slide rail two; 51. Slide block; 52. Support shaft; 53. Rotating plate one; 54. Linkage rod; 55. Reserved groove; 56. Convex block; 57. Spring two; 58. Keyway. Detailed description of the specific implementation

[0034] The following is a detailed description of the specific implementation of the present invention with reference to the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present invention and is not used to limit the present invention.

[0035] In the present invention, unless otherwise stated, the orientation terms such as "upper, lower, inner, outer" included in the terms only represent the orientation of the terms in the normal use state, or the common names understood by those skilled in the art, and should not be regarded as a limitation of the terms.

[0036] Please refer to Figures 1-9, the present invention provides a multi-station laser welding device: including a loading station, the loading station includes an operating table 1 and two conveying lines 2 for conveying workpieces. On the operating table 1, there are two symmetrically arranged swing arms 3 that can rotate relative to each other. The swing arms 3 can swing by 90° to switch between a horizontal state and a vertical state. Each of the two swing arms 3 is provided with a clamping mechanism one 4 for clamping the workpieces on the conveying line 2; a welding station, the welding station is installed above the loading station. The welding station includes two clamping mechanisms two 6 located above the operating table 1. The two clamping mechanisms two 6 can move away from each other to clamp the workpieces on the clamping mechanism one 4, and the two clamping mechanisms two 6 can also move closer to each other to splice the workpieces. A laser welding gun 7 is provided between the two clamping mechanisms two 6 for welding the spliced workpieces; a receiving box 8, which is located directly below the welding station and is used to collect the welded workpieces. When the welding operation of the laser welding gun 7 on the workpieces is completed, the two clamping mechanisms two 6 can release the welded workpieces. In this way, when the two clamping mechanisms two 6 move away from each other, the welded workpieces will break away from the clamping mechanisms two 6 and fall into the receiving box 8 to complete the collection. And during the process of the laser welding gun 7 welding the workpieces spliced by the two clamping mechanisms two 6, the two swing arms 3 will simultaneously drive the clamping mechanism one 4 to move, so that the clamping mechanism one 4 can clamp the workpieces on the conveying line 2 and move to one side of the corresponding clamping mechanism two 6 to wait for the laser welding gun 7 to complete the welding, realizing the synchronous progress of the welding and loading steps. After the welding is completed, the two clamping mechanisms two 6 can realize the clamping and splicing of the workpieces in the process of moving away from each other and resetting once, so that the laser welding gun 7 can quickly perform the next welding operation, improving the operation efficiency.

[0037] It should be noted that one side of the swing arm 3 is rotatably connected to a rotating arm 13 that is perpendicular to it and is located directly above the corresponding conveying line 2. The clamping mechanism one 4 is installed on the bottom side of the rotating arm 13. During the process of the swing arm 3 rotating upward to the vertical state, the rotating arm 13 will flip by 180° along with it, and after reaching the vertical state, the clamping mechanism one 4 can release the workpiece it clamps to exchange the workpiece to the clamping mechanism two 6; during the process of the swing arm 3 rotating downward to the horizontal state, the rotating arm 13 will flip and reset along with it, and after reaching the horizontal state, the clamping mechanism one 4 clamps the corresponding workpiece on the conveying line 2, so that during the process of the clamping mechanism one 4 swinging up and down with the swing arm 3, it can grab the workpiece when approaching the conveying line 2 and release the workpiece when approaching the clamping mechanism two 6;

[0038] At the same time, the two clamping mechanisms two 6 are always in a state of approaching each other, so that the workpieces clamped on the two clamping mechanisms two 6 are spliced. When the two swing arms 3 are in the vertical state, the two clamping mechanisms two 6 can move away from each other so that their positions can approach the clamping mechanism one 4 and exchange the workpieces with it.

[0039] Please refer to Figure 1 As for the specific structure of the first clamping mechanism 4, it is as follows. The first clamping mechanism 4 includes a housing 16. Two symmetrically arranged movable arms 17 are slidably inserted into the bottom of the housing 16 along its length direction. Claw 18 is fixedly connected to the bottom of each of the two movable arms 17. A stroke block 19 is jointly hinged to the tops of the two movable arms 17. A push rod 20 that can be lifted and lowered and whose bottom is fixed to the stroke block 19 is inserted into the top of the housing 16. The push rod 20 can drive the stroke block 19 to lift and lower synchronously, so as to pull the tops of the two movable arms 17 to change their height positions, and enable the two claws 18 to change between the open / closed states, realizing the clamping / releasing of the welded part.

[0040] In some embodiments, in order to enable the rotating arm 13 to rotate following the swing arm 3, it is proposed that fixed shafts 9 are fixedly connected to both sides of the top of the workbench 1. One side of each of the two swing arms 3 is rotatably sleeved on the two fixed shafts 9 through bearings. One side of the inner part of the swing arm 3 is rotatably connected to a first rotating shaft 10 through a bearing. Synchronous wheels 11 are fixedly sleeved on both the fixed shaft 9 and the first rotating shaft 10. A synchronous belt 12 is wound between the two synchronous wheels 11 through a toothed groove. When the swing arm 3 swings up and down, it will rotate 90° around the fixed shaft 9 as the axis. Since the synchronous wheel 11 on the fixed shaft 9 is fixed, when the first rotating shaft 10 follows the swing arm 3 to swing, the synchronous wheel 11 will drive it to rotate 90° as well;

[0041] One side of the inner wall of the swing arm 3 is also rotatably connected to a connecting rod 21 through a bearing. A driving spur gear 14 is fixedly sleeved on the first rotating shaft 10. A driven spur gear 15 meshing with the driving spur gear 14 is fixedly sleeved on the connecting rod 21. The rotating arm 13 communicates with the inner part of the swing arm 3. A keyway 58 is formed on one side of the rotating arm 13. A flat key 22 inserted into the keyway 58 is fixedly connected to one side of the connecting rod 21. So that when the first rotating shaft 10 rotates, it drives the driving spur gear 14 to rotate. The driving spur gear 14 can drive the driven spur gear 15 and the connecting rod 21 to rotate through tooth engagement, realizing the rotation of the rotating arm 13. It should be noted that the transmission ratio of the driving spur gear 14 to the driven spur gear 15 is 1:2, so that when the first rotating shaft 10 rotates 90°, the rotating arm 13 can be flipped 180°. In this way, the first clamping mechanism 4 can clamp the welded part to one side of the second clamping mechanism 6 for the exchange of the welded part with the second clamping mechanism 6.

[0042] Regarding the specific structure of the first clamping mechanism 4 as Figure 1 and Figure 5As shown in the figure, a square rod 23 is snap-fitted and slidably inserted on the side of the rotating arm 13 away from the swing arm 3. An inclined linkage rod 24 is hinged between the outer end of the square rod 23 located outside the rotating arm 13 and the top end of the push rod 20. The inner end of the square rod 23 located inside the rotating arm 13 is fixedly connected to a cylindrical block 25 slidably inserted in the rotating arm 13. An inclined movable plate 26 is hinged to one side of the cylindrical block 25. One side of the inner wall of the swing arm 3 is fixedly connected with a first slide rail 27 along its length direction. A slide rod 28, one end of which is hinged to the movable plate 26, is snap-fitted and slidably connected to the first slide rail 27. And one side of the surface of the slide rod 28 is in contact with the flat key 22, so that the slide rod 28 can pull the cylindrical block 25 and the square rod 23 to contract into the rotating arm 13, so as to drive the push rod 20 to rise and realize the clamping of the welded part by the two first clamping jaws 18. A moving component is arranged on the rotating arm 13, which can move the cylindrical block 25 away from the swing arm 3 when the swing arm 3 rotates upward to the vertical state, so that it can push the push rod 20 to descend and realize the release of the welded part by the two first clamping jaws 18.

[0043] Specifically, the welding station further includes a top frame 36 and two inner annular frames 5. The top frame 36 can be installed on the wall top or on the support frame higher than the feeding station. Two symmetrical outer annular frames 37 are fixedly connected to the bottom of the top frame 36. And the two inner annular frames 5 are respectively slidably inserted into the corresponding outer annular frames 37 along the axial direction of the outer annular frames 37. In order to enable the cylindrical block 25 to move away from the swing arm 3 when the swing arm 3 rotates upward to the vertical state, a sliding groove 29 penetrating through it is opened on one side of the rotating arm 13 along its length direction. A sliding block 30 slidably inserted into the sliding groove 29 is formed on the surface of the cylindrical block 25. Two symmetrical and arc-shaped positioning grooves 31 are opened on one side of the sliding block 30. The self-locking component includes a mounting frame 32 fixedly connected to the surface of the rotating arm 13. A movable rod 33 is hinged to the side of the mounting frame 32 facing the sliding block 30. A positioning block 34 in the shape of a cylinder and inserted into the corresponding positioning groove 31 is fixedly connected to one side of the movable rod 33. And a first spring 35 for pressing the positioning block 34 into the positioning groove 31 is installed on the mounting frame 32. A first push plate 39 is fixedly connected to the side of the outer annular frame 37 facing the corresponding rotating arm 13. And a fixed plate 40 with an arc-shaped structure on one side and corresponding to the first push plate 39 is fixedly connected to one side of the sliding block 30. When the swing arm 3 rotates upward to cause the rotating arm 13 to flip, the fixed plate 40 on the rotating arm 13 will gradually approach the first push plate 39 on the outer annular frame 37, so that one side of the first push plate 39 can push the fixed plate 40 to move to one side along the arc surface of the fixed plate 40, and drive the sliding block 30 to move synchronously. In this way, the positioning block 34 can be snapped into another positioning groove 31 to limit the sliding block 30, and the cylindrical block 25 will move a certain distance away from the swing arm 3, realizing the release of the welded part by the two first clamping jaws 18.

[0044] On one side of the two outer annular frames 37 that are far away from each other, annular grooves adapted to the inner annular frame 5 are provided. In both of the two annular grooves, vertically symmetrical guide rods 41 are fixedly connected, and the two inner annular frames 5 are respectively slidably sleeved on the two symmetrical guide rods 41, so that the inner annular frame 5 can form a left-right snap-in and sliding connection within the outer annular frame 37. A third spring 42 for pushing the two inner annular frames 5 to approach each other is sleeved on each guide rod 41. The second clamping mechanism 6 is located inside the inner annular frame 5. In this way, the two inner annular frames 5 can maintain a state of approaching each other, realizing the splicing of the two workpieces on the second clamping mechanism 6. At the same time, a limit block 43 is provided at one end of the guide rod 41 to prevent the third spring 42 from slipping off the guide rod 41;

[0045] On one side of the two inner annular frames 5, side rods 46 are fixedly connected. On one side of the two outer annular frames 37, second rotating plates 47 that are inclined and in contact with the side rods 46 are rotatably connected. On one side of the two outer annular frames 37, grooves 45 matching the side rods 46 are provided. On the surfaces of the two rotating arms 13, second pushing plates 44 corresponding to the second rotating plates 47 are fixedly connected. After the rotating arm 13 moves upward, the second pushing plate 44 on its surface will push the second rotating plate 47 to flip, so that the second rotating plate 47 drives the side rod 46 and the inner annular frame 5 to slide while flipping. In this way, the two inner annular frames 5 can move away from each other, realizing the process of discharging the welded workpiece and clamping the workpiece by the second clamping mechanism 6.

[0046] During the welding process, in order to reserve enough space for the welding torch to operate between the two workpieces, it is proposed that the second clamping mechanism 6 includes a connecting frame 48 slidably connected inside the inner annular frame 5. At the bottom of the connecting frame 48, second clamping jaws 49 for clamping the workpiece are provided. When the two second clamping mechanisms 6 approach each other, the two connecting frames 48 can approach each other synchronously, so that the workpieces on the two second clamping jaws 49 can move out of the inner annular frame 5 and abut against each other for splicing, leaving a working space for the laser welding torch 7. Such a design is more reasonable.

[0047] The specific connection method between the connecting frame 48 and the inner annular frame 5 is as follows. Two symmetrical second slide rails 50 are fixedly connected inside the inner annular frame 5, and sliding blocks 51 that are slidably connected inside the corresponding second slide rails 50 are formed on both sides of the connecting frame 48.

[0048] Please refer to Figure 3 、 Figure 6 and Figure 7, a support shaft 52 extending in the left - right axial direction is fixedly connected to the top of the inner wall of the inner annular frame 5. A tilted rotating plate 53 is rotatably sleeved on the support shaft 52 through a bearing. A linkage rod 54 that is slidably inserted into the connecting frame 48 is hinged to the bottom of the rotating plate 53. A reserved groove 55 is formed at the top of the inner annular frame 5, and the top of the rotating plate 53 extends into the reserved groove 55. A second spring 57 for pushing the rotating plate 53 to rotate towards the outer annular frame 37 is arranged in the reserved groove 55. Under the action of the second spring 57, the rotating plate 53 will drive the connecting frame 48 and the second clamping jaw 49 to move away from the outer annular frame 37, so that the two second clamping jaws 49 on both sides can approach the clamping mechanism one 4 and realize the replacement of the welded part. A convex block 56 that is fixedly sleeved on the guide rod 41 and corresponds to the reserved groove 55 is formed in the annular groove. After the inner annular frame 5 is inserted into the annular groove, the convex block 56 will push the rotating plate 53 to rotate, so that the two second clamping jaws 49 on both sides can drive the welded parts to approach each other and complete the splicing.

[0049] In addition, an annular electric track 38 is installed between the two outer annular frames 37, and the laser welding gun 7 is installed between the two annular electric tracks 38, enabling it to perform circular position movement to achieve full - welding of the two spliced welds.

[0050] The working process of this device is as follows: The two clamping mechanisms one 4 clamp the welded parts on the conveyor line 2. During the upward swing of the swing arm 3, the two clamping mechanisms one 4 will flip 180° along with it, so that the two clamped welded parts are both placed towards the corresponding clamping mechanism two 6. At the same time, the two clamping mechanisms two 6 will move away from each other while the swing arm 3 swings to dock with the position of the clamping mechanism one 4 and form the exchange of the welded parts. Then, during the process of the two clamping mechanisms two 6 splicing the welded parts and being welded by the laser welding gun 7, the swing arm 3 can perform the next swing process to clamp the welded parts on the conveyor line 2. In this way, after the welding is completed, the two clamping mechanisms two 6 can immediately obtain the welded parts and perform re - welding processing after separation.

[0051] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details in the above - mentioned embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0052] In addition, it should be noted that, among the various specific technical features described in the above - mentioned specific embodiments, they can be combined in any suitable way without contradiction. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods.

[0053] In addition, any combination can be made among various different embodiments of the present invention, as long as it does not violate the idea of the present invention, and it should also be regarded as the content disclosed by the present invention.

Claims

1. A multi-station laser welding device, characterized in that Including: A loading station, the loading station includes an operating table (1) and two conveyor lines (2) for conveying welded parts. There are two swing arms (3) symmetrically arranged left and right on the operating table (1) and capable of relative rotation. Each of the two swing arms (3) is provided with a clamping mechanism I (4) for clamping the welded parts on the conveyor line (2); A welding station, the welding station includes two clamping mechanisms II (6) located above the operating table (1). The two clamping mechanisms II (6) can move away from each other to clamp the welded parts on the clamping mechanism I (4), and the two clamping mechanisms II (6) can also move closer to each other to splice the welded parts. A laser welding gun (7) for welding the spliced welded parts is arranged between the two clamping mechanisms II (6); A receiving box (8), which is located directly below the welding station and is used to collect the welded parts after welding.

2. The multi-station laser welding device according to claim 1, characterized in that: One side of the swing arm (3) is rotatably connected to a rotating arm (13) perpendicular to it and located directly above the corresponding conveyor line (2). The clamping mechanism I (4) is installed on one side of the bottom of the rotating arm (13).

3. The multi-station laser welding device according to claim 2, wherein: The clamping mechanism I (4) includes a housing (16). Two symmetrically arranged movable arms (17) are slidably inserted along the length direction of the bottom of the housing (16). Claw I (18) is fixedly connected to the bottom of each of the two movable arms (17). A stroke block (19) is jointly hinged at the top of the two movable arms (17). A push rod (20) that can be lifted and whose bottom is fixed to the stroke block (19) is inserted into the top of the housing (16).

4. A multi-station laser welding device according to claim 3, characterized in that: Fixed shafts (9) are fixedly connected to both sides of the top of the operating table (1). One side of each of the two swing arms (3) is rotatably sleeved on the two fixed shafts (9) through bearings. One side of the inside of the swing arm (3) is rotatably connected to a rotating shaft I (10) through a bearing. Synchronous wheels (11) are fixedly sleeved on both the fixed shaft (9) and the rotating shaft I (10). A synchronous belt (12) is wound between the two synchronous wheels (11) through a toothed groove; One side of the inner wall of the swing arm (3) is also rotatably connected to a connecting rod (21) through a bearing. A driving spur gear (14) is fixedly sleeved on the rotating shaft I (10). A driven spur gear (15) meshing with the driving spur gear (14) is fixedly sleeved on the connecting rod (21). The rotating arm (13) is communicated with the inside of the swing arm (3). A keyway (58) is opened on one side of the rotating arm (13). A flat key (22) inserted into the keyway (58) is fixedly connected to one side of the connecting rod (21).

5. A multi-station laser welding device according to claim 4, characterized in that: On the side of the rotating arm (13) away from the swing arm (3), a square rod (23) is snap-fitted and slidably inserted. An inclined linkage rod one (24) is hinged between the outer end of the square rod (23) located outside the rotating arm (13) and the top end of the push rod (20). The inner end of the square rod (23) located inside the rotating arm (13) is fixedly connected to a cylindrical block (25) slidably inserted into the rotating arm (13). One side of the cylindrical block (25) is hinged to an inclined movable plate (26). One side of the inner wall of the swing arm (3) is fixedly connected with a slide rail one (27) along its length direction. A slide rod (28) whose one end is hinged to the movable plate (26) is snap-fitted and slidably connected to the slide rail one (27). And one side of the surface of the slide rod (28) is in contact with the flat key (22). A moving component is arranged on the rotating arm (13) to move the cylindrical block (25) away from the swing arm (3) when the swing arm (3) rotates upward to the vertical state.

6. The multi-station laser welding device according to claim 5, characterized in that: The welding station further includes a top frame (36) and two inner annular frames (5). The bottom of the top frame (36) is fixedly connected with two symmetric outer annular frames (37). And the two inner annular frames (5) are respectively slidably inserted into the corresponding outer annular frames (37) along the axial direction of the outer annular frames (37). A sliding groove (29) penetrating the rotating arm (13) along its length direction is formed on one side of the rotating arm (13). A sliding block (30) slidably inserted into the sliding groove (29) is formed on the surface of the cylindrical block (25). Two symmetric and arc-shaped positioning grooves (31) are formed on one side of the sliding block (30). The self-locking component includes a mounting frame (32) fixedly connected to the surface of the rotating arm (13). An activity rod (33) is hinged to the side of the mounting frame (32) facing the sliding block (30). A positioning block (34) in the shape of a cylinder and inserted into the corresponding positioning groove (31) is fixedly connected to one side of the activity rod (33). And a spring one (35) for pressing the positioning block (34) into the positioning groove (31) is installed on the mounting frame (32). A push plate one (39) is fixedly connected to the side of the outer annular frame (37) facing the corresponding rotating arm (13). And a fixing plate (40) with an arc-shaped structure on one side and corresponding to the push plate one (39) is fixedly connected to one side of the sliding block (30).

7. A multi-station laser welding device according to claim 6, characterized in that: Ring grooves adapted to the inner annular frames (5) are formed on the mutually remote sides of the two outer annular frames (37). Two symmetric guide rods (41) are fixedly connected in the two ring grooves. And the two inner annular frames (5) are respectively slidably sleeved on the two symmetric guide rods (41). A spring three (42) for pushing the two inner annular frames (5) to approach each other is sleeved on each guide rod (41). Side rods (46) are fixedly connected to one side of the two inner annular frames (5). And a rotating plate two (47) which is inclined and in contact with the side rod (46) is rotatably connected to one side of the two outer annular frames (37). Push plates two (44) corresponding to the rotating plate two (47) are fixedly connected to the surfaces of the two rotating arms (13).

8. A multi-station laser welding device according to claim 7, characterized in that: The second clamping mechanism (6) includes a connecting frame (48) slidably connected to the inner ring frame (5). A second jaw (49) for clamping the welded part is provided at the bottom of the connecting frame (48). When the two second clamping mechanisms (6) approach each other, the two connecting frames (48) can approach each other synchronously, so that the welded parts on the two second jaws (49) can be moved out of the inner ring frame (5) and abut against each other for splicing, so as to reserve an operating space for the laser welding torch (7).

9. A multi-station laser welding device according to claim 8, characterized in that: At the top of the inner wall of the inner ring frame (5), a support shaft (52) extending in the left-right axial direction is fixedly connected. A tilted first rotating plate (53) is rotatably sleeved on the support shaft (52) through a bearing. A linkage rod (54) slidably inserted into the connecting frame (48) is hinged to the bottom of the first rotating plate (53). A reserved groove (55) is formed at the top of the inner ring frame (5), and the top of the first rotating plate (53) extends into the reserved groove (55). A second spring (57) for pushing the first rotating plate (53) to rotate towards the outer ring frame (37) is arranged in the reserved groove (55). A convex block (56) fixedly sleeved on the guide rod (41) and corresponding to the reserved groove (55) is formed in the annular groove.

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