A multi-station welding device and method based on automobile body processing

Abstract

The present application relates to the technical field of automobile welding, and specifically discloses a multi-station welding device and method based on automobile body processing, which comprises a welding seat, two feeding grooves are formed in the welding seat, the feeding grooves are used for conveying side beams, the feeding grooves extend from one end of the welding seat to the middle part of the welding seat, a reversing block is arranged at the end of the feeding groove close to the middle part of the welding seat, and the reversing block is used for adjusting the horizontally placed side beam in the feeding groove to a vertical state. Through the arrangement of the feeding groove, the first and second conveying belts, the simultaneous independent conveying and accurate positioning of the three parts of the side beam, the bottom beam and the top beam are realized, the built-in conveying belt in the feeding groove ensures that the side beam is stably sent to the middle part, the first conveying belt accurately conveys the bottom beam to the welding starting position, the second conveying belt is responsible for the conveying and positioning of the top beam, and adjustable width limiting blocks are arranged to adapt to top beams of different sizes, so that subsequent welding processing is facilitated, and the processing efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of automotive welding technology, and in particular to a multi-station welding apparatus and method based on automotive body processing. Background Technology

[0002] Multi-station welding equipment for automotive body processing is an automated welding system specifically designed for automobile manufacturing. By integrating multiple welding stations and intelligent control technology, it achieves efficient and precise welding of body parts. These devices typically include core modules such as welding boxes, circulating drive frames, moving stations, and welding fixing components. They can handle multiple welding tasks simultaneously and adjust the workpiece angle through fixture modules and positioning components to ensure the accuracy of the welding position. For example, the welding box has multiple welding bays arranged side by side, each equipped with an independent welding component and stroke adjustment mechanism. Combined with the circulating drive frame, it achieves continuous conveying and positioning of workpieces, significantly improving production efficiency. In addition, some devices are also equipped with enclosed components and reinforced structures to reduce interference during the welding process and enhance workpiece stability. This technology solves the problems of angle adjustment deviation and low efficiency in traditional welding, and is especially suitable for the mass production of complex workpieces such as body structural parts.

[0003] For example, patent publication number CN117161633B discloses a welding device for soundproof door and window frames. This technology includes a base; a support mechanism connected to the base; and a welding mechanism located outside the support mechanism and connected to the base. The support mechanism includes: an adjustment component symmetrically arranged and slidably connected to the base; a connecting component located between the adjustment component and the base for adjusting the distance between the two adjustment components; and a fixing component connected to the adjustment component and symmetrically arranged. By setting up the support mechanism, the fixing component, in conjunction with the adjustment component and the connecting component, can achieve automatic alignment between the frames, thereby enabling the welding mechanism to perform precise welding between the frames, ensuring welding quality and efficiency.

[0004] The problem with the existing technology is that when welding frame-shaped parts, it is necessary to first use auxiliary equipment to position and clamp the four beams of the rectangular frame, and then use a welding machine to weld the joints of the four beams separately, which requires improving processing efficiency. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] This invention provides a multi-station welding device and method for automobile body processing, which can solve the problem of low processing efficiency in existing technologies. The specific solution is as follows:

[0007] On the one hand, the present invention provides a multi-station welding device based on automobile body processing, including a welding seat, on which two feeding grooves are provided. The feeding grooves are used to transport the side beams. The feeding grooves extend from one end of the welding seat to the middle of the welding seat. A reversing block is provided at one end of the feeding groove near the middle of the welding seat. The reversing block is used to adjust the side beams placed horizontally in the feeding grooves to a vertical state.

[0008] The top of the welding seat is equipped with a first conveyor belt for conveying the bottom beam and a second conveyor belt for conveying the top beam on both sides.

[0009] Above the welding stand is a welding machine and a frame for supporting the welding machine. When the bottom beam is conveyed to align with one end of the two side beams, the reversing block rotates the side beams from the feed trough to a vertical position, and then the welding machine welds the connection between the side beams and the bottom beam.

[0010] After the top beam is conveyed to the designated position by the second conveyor belt, the reversing block rotates the vertical side beam and bottom beam 90 degrees in the opposite direction of the feeding trough, so that the top of the side beam is aligned with the top beam. Then, the connection between the side beam and the top beam is welded by a welding machine.

[0011] Preferably, when the side beam is placed horizontally in the feeding trough and the reversing block is coupled to the end of the side beam, the stop block on the outer wall of the reversing block can block the bottom beam, so that the bottom beam moves to a fixed position under the drive of the first conveyor belt.

[0012] Preferably, a baffle is provided on the second conveyor belt near the middle of the welding seat, so that the top beam moves to a fixed position under the drive of the second conveyor belt.

[0013] Preferably, the two ends of the second conveyor belt are provided with width limiting blocks, the length of the two width limiting blocks is matched with that of the top beam, and the bottom of the two width limiting blocks is connected to a bidirectional screw. When the bidirectional screw rotates, it can drive the two width limiting blocks to move closer to each other or further away from each other.

[0014] Preferably, the welding machine is slidably mounted below the frame, the bottom of the frame is provided with a slide groove, the top of the welding machine is slidably connected to the inside of the slide groove, a one-way screw is installed inside the slide groove, the two ends of the one-way screw are rotatably connected to the inner wall of the slide groove through bearings, and the top of the welding machine is threadedly connected to the one-way screw.

[0015] Preferably, the commutator block is L-shaped, and a coupling block is provided on one side of the commutator block. The cross-sectional shape of the coupling block matches the cross-sectional shape of the side beam. When the end of the side beam approaches the commutator block, the end of the side beam is inserted into the coupling block on the commutator block, thereby forming a coupling connection between the side beam and the commutator block.

[0016] Preferably, the ends of the two reversing blocks are connected to gears, the two gears are rotatably mounted on the welding seat, and racks are provided below the two gears. The racks mesh with the gears, one end of the two racks is fixedly connected by a timing frame, and a telescopic member is connected to the outer wall of the timing frame. The other end of the telescopic member is fixed on the welding seat.

[0017] Preferably, a baffle is provided near the middle of the welding seat on the second conveyor belt. A movable groove is provided on the top of the welding seat, and the baffle can move within the movable groove. A reversing column and a sliding column are connected to both ends of the baffle. The inner wall of the movable groove is provided with the reversing column and the sliding column. A telescopic rod is provided at the end of the baffle away from the second conveyor belt. The telescopic rod is fixed to the inner wall of the movable groove. A rotating sleeve is fixed at the end of the telescopic rod near the baffle. The rotating sleeve is rotatably installed at one end of the baffle. The inner wall of the movable groove is provided with a reversing groove and a sliding groove. The reversing column slides in the reversing groove, and the sliding column slides in the sliding groove. The sliding groove is horizontally arranged.

[0018] Preferably, the two ends of the second conveyor belt are provided with width limiting blocks, the two width limiting blocks are matched with the length of the top beam, the bottom of the two width limiting blocks are connected to a bidirectional screw, the two ends of the bidirectional screw are rotatably connected to the top of the welding seat, when the bidirectional screw rotates, it can drive the two width limiting blocks to move closer or further away from each other, the side of the two width limiting blocks near the second conveyor belt is provided with a sandwich layer, the height of the sandwich layer is matched with the thickness of the second conveyor belt, and the side of the second conveyor belt can be inserted into the sandwich layer.

[0019] On the other hand, the present invention provides a multi-station welding method based on automobile body processing, comprising the following steps:

[0020] S1. The two side beams are conveyed horizontally to the corresponding feeding troughs on the welding seat until the reversing block in the middle of the feeding trough is located. At the same time, the bottom beam is conveyed to the designated welding position through the first conveyor belt at the top of the welding seat.

[0021] S2. Rotate the horizontal side beam to a vertical position using the reversing block, aligning the bottom end of the side beam with the end of the bottom beam. Then, weld the connection between the vertical side beam and the bottom beam using a welding machine.

[0022] S3. The top beam is conveyed to the designated welding position via the second conveyor belt at the top of the welding seat. The welded side beam and bottom beam assembly are rotated 90° in the opposite direction of the feeding trough by the reversing block so that the top of the vertical side beam is aligned with the end of the top beam.

[0023] S4. Weld the connection between the top of the side beam and the top beam using a welding machine to complete the welding of the vehicle body frame.

[0024] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0025] 1. This invention achieves simultaneous independent conveying and precise positioning of three main components: side beam, bottom beam, and top beam, by setting up a feeding trough and first and second conveyor belts. The built-in conveyor belt in the feeding trough ensures that the side beam is smoothly delivered to the middle; the first conveyor belt accurately conveys the bottom beam to the welding starting position; the second conveyor belt is responsible for conveying and positioning the top beam, and is equipped with an adjustable width limiting block to adapt to top beams of different sizes, thereby facilitating subsequent welding processing and improving processing efficiency.

[0026] 2. This invention achieves precise attitude conversion of the side beam (horizontal → vertical → flipped 90° again) by setting an L-shaped reversing block in conjunction with a rack and pinion drive mechanism. This process works in coordination with the reciprocating sliding welding action of the welding machine under the unidirectional screw drive, so that the side beam can be welded to the bottom beam and the top beam at different angles to form a complete frame.

[0027] 3. The reversing block of the present invention integrates a dynamic stop function. When the side beam is horizontal, the stop extends to block the bottom beam for precise positioning. When the reversing block rotates and lifts the side beam, the stop retracts into the feeding trough and hides. This design cleverly utilizes the structural movement to achieve automatic spatial clearance or blocking positioning under different working conditions, avoiding additional space occupation or complicated operation.

[0028] 4. The welding machine of this invention uses a combination of frame slide groove and unidirectional screw to achieve automated reciprocating linear movement driven by a motor. This design significantly improves work efficiency, enabling a single welding machine to accurately complete the welding tasks of different positions of bottom beam and side beam, top beam and side beam according to a preset program, without the need for frequent manual position adjustments, saving time and ensuring accuracy.

[0029] 5. The second conveyor belt of this invention is equipped with a movable baffle and a telescopic rod at its end. Combined with the action of gravity and a special chute design (reversing chute and sliding chute), the blocking top beam can be raised into place during welding and automatically tilted and retracted to make way after welding is completed, which facilitates the output of the welded frame product. At the same time, the width limiting block driven by the bidirectional screw can be quickly adjusted to adapt to top beams of different sizes, enhancing the versatility of the equipment.

[0030] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0032] Figure 1 This is a perspective view of the entire invention;

[0033] Figure 2 The top perspective view of this invention has been removed;

[0034] Figure 3 This is a half-sectional view of the welding base of the present invention;

[0035] Figure 4 This is a bottom perspective view of the welding machine of the present invention;

[0036] Figure 5 This is a perspective view of the commutator block, side beam, bottom beam, and top beam of the present invention;

[0037] Figure 6 This is a perspective view of the commutator block and side beam of the present invention;

[0038] Figure 7 This is a diagram showing the state changes of the commutator block of the present invention;

[0039] Figure 8 This is a perspective view of the present invention with the welding seat removed;

[0040] Figure 9 This is a diagram showing the state changes of the baffle of the present invention;

[0041] Figure 10 This is a perspective view of the baffle and telescopic rod of the present invention;

[0042] Figure 11 This is a partial cross-sectional view of the welding seat of the present invention;

[0043] Figure 12 This is a perspective view of the other side of the welding seat of the present invention;

[0044] Figure 13 This is a perspective view of the width-limiting block of the present invention;

[0045] Figure 14 This is a perspective view of the commutator block and stop block of the present invention.

[0046] The accompanying figure is labeled as follows:

[0047] 1. Welding base; 2. Feed trough; 3. Side beam; 4. Reversing block; 5. Bottom beam; 6. First conveyor belt; 7. Top beam; 8. Second conveyor belt; 9. First receiving trough; 10. Second receiving trough; 11. Welding machine; 12. Frame; 13. Slide chute; 14. One-way screw; 15. Motor; 16. Stop block; 17. Coupling block; 18. Gear; 19. Rack; 20. Synchronizing frame; 21. Baffle; 22. Movable chute; 23. Reversing column; 24. Sliding column; 25. Rotating sleeve; 26. Telescopic rod; 27. Reversing chute; 28. Sliding chute; 29. ​​Third conveyor belt; 30. Width limiting block; 31. Two-way screw; 32. Interlayer; 33. Electromagnet. Detailed Implementation

[0048] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of the present invention and, together with the embodiments of the present invention, serve to illustrate the principles of the present invention.

[0049] Example 1: As Figure 1 , Figure 2 As shown, this embodiment provides a multi-station welding device based on automobile body processing, including a welding seat 1. The welding seat 1 has two feeding grooves 2, which are used to transport the side beam 3. The feeding grooves 2 extend from one end of the welding seat 1 to the middle of the welding seat 1. A reversing block 4 is provided at one end of the feeding groove 2 near the middle of the welding seat 1. The reversing block 4 is used to adjust the side beam 3, which is placed horizontally in the feeding groove 2, to a vertical state.

[0050] like Figure 3 As shown, the top of the welding seat 1 is provided with a first conveyor belt 6 for conveying the bottom beam 5 and a second conveyor belt 8 for conveying the top beam 7 on both sides. Both ends of the first conveyor belt 6 and the second conveyor belt 8 are equipped with drive rollers, and the drive rollers can rotate under the drive of the drive component. The top of the welding seat 1 is provided with a first receiving groove 9 and a second receiving groove 10. The first conveyor belt 6 and the drive rollers at both ends are installed in the first receiving groove 9, and the second conveyor belt 8 and the drive rollers at both ends are installed in the second receiving groove 10.

[0051] like Figure 4As shown, to fix the welding machine 11, a welding machine 11 and a frame 12 for supporting the welding machine 11 are arranged above the welding base 1. When the bottom beam 5 is conveyed to align with one end of the two side beams 3, the reversing block 4 rotates the side beams 3 from the feed trough 2 to a vertical state, and then the welding machine 11 welds the connection between the side beams 3 and the bottom beam 5. The welding machine 11 is slidably installed below the frame 12, and a slide groove 13 is opened at the bottom of the frame 12. The top of the welding machine 11 is flush with the inner surface of the slide groove 13. The sliding connection is as follows: a one-way screw 14 is installed inside the slide groove 13, and a motor 15 is installed at one end of the one-way screw 14. The motor 15 is mounted on the frame 12, and the two ends of the one-way screw 14 are rotatably connected to the inner wall of the slide groove 13 through bearings. The top of the welding machine 11 is threadedly connected to the one-way screw 14. With the above scheme, the motor 15 drives the one-way screw 14 to rotate, thereby driving the welding machine 11 to slide back and forth in the slide groove 13, so that the bottom beam 5 and the top beam 7 can be welded separately.

[0052] like Figure 5 As shown, after the top beam 7 is conveyed to the designated position by the second conveyor belt 8, the reversing block 4 rotates the vertical side beam 3 and bottom beam 5 ninety degrees in the opposite direction of the feeding trough 2, so that the top of the side beam 3 is aligned with the top beam 7. Then, the welding machine 11 welds the connection position of the side beam 3 and the top beam 7. After the bottom beam 5 and the top beam 7 are both welded to the two side beams 3, a complete car sunroof frame is formed.

[0053] like Figure 5 , Figure 6 As shown, when the side beam 3 is horizontally placed in the feeding trough 2 and the reversing block 4 is coupled to the end of the side beam 3, the stop block 16 on the outer wall of the reversing block 4 can block the bottom beam 5, so that the bottom beam 5 moves to a fixed position under the drive of the first conveyor belt 6; the reversing block 4 is L-shaped, and a coupling block 17 is provided on one side of the reversing block 4. The cross-sectional shape of the coupling block 17 matches the cross-sectional shape of the side beam 3. When the end of the side beam 3 approaches the reversing block 4, the end of the side beam 3 is inserted into the coupling block 17 on the reversing block 4, so that the side beam 3 and the reversing block 4 form a coupled connection; when the side beam 3 is made of magnetic material, an electromagnet 33 is also installed on one side of the reversing block 4. When the end of the side beam 3 approaches the reversing block 4, the electromagnet 33 is activated to attract the end of the side beam 3.

[0054] like Figure 6 , Figure 7As shown, gears 18 are connected to the ends of the two reversing blocks 4. The two gears 18 are rotatably mounted on the welding seat 1. A rack 19 is provided below the two gears 18. The rack 19 meshes with the gears 18. One end of the two racks 19 is fixedly connected to the synchronous frame 20. A telescopic member (not shown in the figure) is connected to the outer wall of the synchronous frame 20. The other end of the telescopic member is fixed to the welding seat 1. The telescopic member can drive the synchronous frame 20 and the two racks 19 to move. By driving the synchronous frame 20 and the racks 19 to move back and forth, the gears 18 and the reversing blocks 4 can be driven to rotate, thereby allowing the side beam 3 to be flipped to different angles. A clearance groove is provided on the top of the welding seat 1, and the synchronous frame 20 moves in the clearance groove.

[0055] like Figure 8 , Figure 9 As shown, a baffle 21 is provided near the middle of the welding seat 1 on the second conveyor belt 8, so that the top beam 7 can be moved to a fixed position under the drive of the second conveyor belt 8. This position allows the top beam 7 to be moved to a pre-planned position. A movable groove 22 is provided on the top of the welding seat 1, and the baffle 21 can move within the movable groove 22. A reversing column 23 and a sliding column 24 are connected to both ends of the baffle 21. The inner wall of the movable groove 22 is provided with the reversing column 23 and the sliding column 24. A telescopic rod 26 is provided at the end of the baffle 21 away from the second conveyor belt 8. The telescopic rod 26 is fixed to the inner wall of the movable groove 22. A rotating sleeve 25 is fixed at the end of the telescopic rod 26 near the baffle 21. The rotating sleeve 25 is rotatably installed at one end of the baffle 21.

[0056] like Figure 10 As shown, the inner wall of the movable groove 22 is provided with a reversing groove 27 and a sliding groove 28. The reversing column 23 slides in the reversing groove 27, and the sliding column 24 slides in the sliding groove 28. The sliding groove 28 is horizontally set.

[0057] like Figure 8 , Figure 10 , Figure 11 As shown in the above scheme, when the telescopic rod 26 drives the baffle 21 to retract, under the action of the baffle 21's own gravity, the reversing column 23 slides along the reversing groove 27, and the sliding column 24 moves along the sliding groove 28. Since the reversing groove 27 has a certain inclination angle, the baffle 21 will rotate a certain angle about the rotating axis of the sliding column 24. The inside of the feeding trough 2 is provided with a third conveyor belt 29, which is used to convey the side beam 3.

[0058] like Figure 12 , Figure 13As shown, width limiting blocks 30 are provided at both ends of the second conveyor belt 8. The length of the two width limiting blocks 30 is matched with that of the top beam 7. The bottom of the two width limiting blocks 30 is connected to a bidirectional screw 31. The two ends of the bidirectional screw 31 are rotatably connected to the top of the welding seat 1. When the bidirectional screw 31 rotates, it can drive the two width limiting blocks 30 to move closer or further away from each other. A sandwich layer 32 is provided on the side of the two width limiting blocks 30 near the second conveyor belt 8. The height of the sandwich layer 32 is matched with the thickness of the second conveyor belt 8. The side of the second conveyor belt 8 can be inserted into the sandwich layer 32.

[0059] like Figure 14 As shown, the stop block 16 is fixedly connected to the inner side of the two reversing blocks 4, and is configured such that when the reversing block 4 is coupled to the side beam 3 and the side beam 3 is in the feeding trough 2, the stop block 16 can abut the side of the bottom beam 5, so that after the bottom beam 5 is conveyed to the position by the first conveyor belt 6, it can stay at the end of the side beam 3 to be welded. When the reversing block 4 is coupled to the side beam 3 and the side beam 3 is in a vertical state, the stop block 16 is housed inside the feeding trough 2 as the reversing block 4 rotates.

[0060] In the above scheme, when welding the car sunroof frame is required, the two side beams 3 are placed inside the feeding trough 2. The third conveyor belt 29 inside the feeding trough 2 drives the side beams 3 to the middle of the welding seat 1, while the bottom beam 5 is placed on the first conveyor belt 6. The first conveyor belt 6 drives the bottom beam 5 to move to the middle of the welding seat 1. Finally, the ends of the bottom beam 5 and the side beams 3 converge at the middle of the welding seat 1. Then, the second conveyor belt 8 drives the top beam 7, and then drives the synchronous frame 20 to move through the telescopic component. The synchronous frame 20 drives the rack 19 to move, and the rack 19 drives the gear 18 to rotate. The gear 18 then drives the reversing block 4 to rotate, so that the side beams 3 rotate to a vertical state. At this time, the welding machine 11 welds the connection position of the bottom beam 5 and the side beams 3. After the welding at this position is completed, the telescopic component continues to drive... The synchronous frame 20 moves, causing the gear 18 to rotate further, which in turn causes the reversing block 4 to drive the side beam 3 and the bottom beam 5 to continue rotating, so that the top of the side beam 3 corresponds to the position of the top beam 7. Then the welding machine 11 welds the connection position of the side beam 3 and the top beam 7, thus completing the welding of the entire frame. Then the telescopic rod 26 drives the baffle 21 to move. When the telescopic rod 26 drives the baffle 21 to retract, under the action of the baffle 21's own weight, the reversing column 23 slides along the reversing groove 27, and the sliding column 24 moves along the sliding groove 28. Since the reversing groove 27 has a certain inclination angle, the baffle 21 will rotate a certain angle around the rotating axis of the sliding column 24, so that the baffle 21 retracts into the movable groove 22. Then the second conveyor belt 8 drives the entire frame to move and output the frame, completing the welding work.

[0061] Example 2: This example differs from Example 1 in that it provides a multi-station welding method based on automobile body processing, including the following steps:

[0062] S1. Component transport and positioning:

[0063] Two side beams 3 are placed horizontally in the feeding troughs 2 on both sides of the welding seat 1, and are synchronously conveyed to the center of the welding seat by the third conveyor belt 29 inside the feeding trough 2. The ends of the side beams 3 eventually reach the end of the feeding trough 2 and are coupled to the reversing block 4 there (by inserting the coupling block 17 or by attracting the electromagnet 33 when magnetic materials are used).

[0064] The bottom beam 5 is placed on the first conveyor belt 6, which is installed in the first receiving groove 9 opened on the top of the welding seat 1. It is driven by the drive rollers at both ends (not shown in detail in the figure) to transport the bottom beam 5 to the middle of the welding seat. When the side beam 3 is placed horizontally in the feeding groove 2 and coupled with the reversing block 4, the stop block 16 fixed inside the reversing block 4 is in the extended state, which just abuts against the side of the bottom beam 5 that is being transported, and precisely positions the bottom beam 5 to the position aligned with the ends of the two side beams 3 (i.e., the welding start position).

[0065] The top beam 7 is placed on the second conveyor belt 8, which is installed in the second receiving groove 10 opened on the top of the welding seat 1 and driven by the drive rollers at both ends. A movable baffle 21 is provided above the middle of the second conveyor belt 8. When the baffle 21 is pushed out by the telescopic rod 26 installed in the movable groove 22, it acts as a block to ensure that the conveyed top beam 7 stops at the predetermined position. Its position allows it to be aligned with the top of the lifted side beam 3. Width limiting blocks 30 are also provided on both sides of the second conveyor belt 8. Driven by the bidirectional screw 31, they can move closer or further apart to clamp the top beams 7 of different lengths and ensure stability during the conveying and positioning process.

[0066] S2, Initial Welding (Bottom Beam and Side Beams):

[0067] Once the bottom beam 5 and the two side beams 3 are in place (i.e., the ends of the bottom beam 5 are aligned with the ends of the two side beams 3), the drive mechanism (the telescopic component not shown in the figure) is activated. The telescopic component drives the synchronous frame 20 to move, and the synchronous frame 20 drives the two racks 19 connected to it to move synchronously.

[0068] The rack 19 meshes with the gear 18 rotatably mounted on the welding base 1. The movement of the rack 19 drives the gear 18 to rotate;

[0069] The rotation of gear 18 drives the L-shaped reversing block 4, which is fixed to it, to rotate. The rotation of reversing block 4 forces the side beam 3 coupled with it to rotate and rise from a horizontal position in the feed trough 2 to a vertical position (perpendicular to the top surface of the welding seat 1) around the contact point between it and reversing block 4. At the same time, it drives the stop block 16 to rotate downward and be stored inside the feed trough 2 and hidden.

[0070] At this point: the lower ends of the two vertical side beams 3 are exactly aligned with the two ends of the bottom side beam 5 (which have been precisely positioned at the welding start point).

[0071] Welding action: Start the welding machine 11. The welding machine 11 is installed in conjunction with the bottom slide groove 13 of the frame 12 through the slider on its top and can slide along the slide groove 13. A one-way screw 14 driven by the motor 15 is installed in the slide groove 13. The top of the welding machine 11 is threadedly connected to the one-way screw 14. The motor 15 is started, driving the one-way screw 14 to rotate, which drives the welding machine 11 to slide along the slide groove 13 to a suitable position, and welds the lower ends of the two vertical side beams 3 and the two ends of the bottom beam 5 respectively, thus completing the welding of the bottom beam and the side beam.

[0072] S3, Secondary Rotation and Secondary Welding:

[0073] After the welding of the bottom beam 5 and the side beam 3 is completed, the drive mechanism (telescopic component) is restarted. The telescopic component continues to drive the synchronous frame 20 and the rack 19 to move;

[0074] The rack 19 continues to drive the gear 18 to rotate, which in turn drives the reversing block 4 and the components coupled with it and already in a vertical state (side beam 3 + bottom beam 5) to rotate another 90 degrees in a direction perpendicular to the first rotation plane (that is, to rotate 90 degrees from the vertical position in the middle of the welding seat to the direction away from the inlet of the feeding trough 2).

[0075] At this point: the two side beams 3 change from a vertical posture to a top-up orientation (but are rotated 90 degrees relative to the initial horizontal direction), and their top ends are aligned with the two ends of the top beam 7 that were previously blocked and positioned by the baffle 21 on the second conveyor belt 8.

[0076] Welding action: Restart the welding machine 11, the motor 15 drives the one-way screw 14, so that the welding machine 11 slides back or slides to a position suitable for welding the top beam. The welding machine 11 welds the top ends of the two side beams 3 to the connection positions of the two ends of the top beam 7.

[0077] Frame formation: At this point, the bottom beam 5 and the top beam 7 are welded to the bottom and top ends of the two side beams 3, respectively, forming a closed car sunroof frame (rectangular or near-rectangular frame).

[0078] Finished product output: After the entire frame is welded, it needs to be output.

[0079] Baffle retraction: Activate the telescopic rod 26 that mounts the baffle 21 to retract it. Under the action of the baffle 21's own weight, the reversing columns 23 at both ends slide along the reversing groove 27 with an inclined angle on the wall of the movable groove 22, and the sliding column 24 moves along the horizontal sliding groove 28. This combined motion causes the baffle 21 to rotate around the axis of the sliding column 24 by a certain angle (usually tilted and retracted), and finally retract into the internal space of the movable groove 22, making way for the finished product.

[0080] Frame output: The second conveyor belt 8 starts again, transporting the already welded sunroof frame out of the device, completing the entire welding cycle. At this time, the width limiting block 30 can be widened as needed by the bidirectional screw 31 to avoid blocking the frame output.

[0081] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0082] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the present application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0083] Parallelism: The parallelism defined in this application is not limited to absolute parallelism. This definition of parallelism can be understood as basic parallelism. It allows for situations where the parallelism is not absolute due to factors such as assembly tolerance, design tolerance, and structural flatness. It also allows for errors within a small angular range, such as within 10 degrees of assembly error. These can all be considered as parallel relationships.

[0084] Perpendicularity: The perpendicularity defined in this application is not limited to an absolute perpendicular intersection (with an included angle of 90 degrees). It is permissible for non-absolute perpendicular intersections caused by factors such as assembly tolerances, design tolerances, and structural flatness. It is permissible for errors within a small angular range, such as an assembly error range of 80 to 100 degrees, which can all be understood as a perpendicular relationship.

[0085] The term "multiple" in this article refers to two or more. The term "and / or" in this article is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three cases: A exists alone, A and B exist simultaneously, and B exists alone.

[0086] The devices or elements referred to in the embodiments of this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of this application. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0087] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A multi-station welding device for automobile body processing, comprising a welding seat, characterized in that: The welding stand has two feeding slots, which are used to transport the side beams. The feeding slots extend from one end of the welding stand to the middle of the welding stand. A reversing block is provided at the end of the feeding slot near the middle of the welding stand. The reversing block is used to adjust the side beams placed horizontally in the feeding slots to a vertical state. The top of the welding seat is equipped with a first conveyor belt for conveying the bottom beam and a second conveyor belt for conveying the top beam on both sides. Above the welding stand is a welding machine and a frame for supporting the welding machine. When the bottom beam is conveyed to align with one end of the two side beams, the reversing block rotates the side beams from the feed trough to a vertical position, and then the welding machine welds the connection between the side beams and the bottom beam. After the top beam is conveyed to the designated position by the second conveyor belt, the reversing block rotates the vertical side beams and bottom beams 90 degrees in the opposite direction of the feeding trough, so that the top of the side beams is aligned with the top beam. Then, the connection between the side beams and the top beam is welded by a welding machine. When the side beam is placed horizontally in the feeding trough and the reversing block is coupled to the end of the side beam, the stop block on the outer wall of the reversing block can block the bottom beam, causing the bottom beam to move to a fixed position under the drive of the first conveyor belt; A baffle is installed near the middle of the welding seat on the second conveyor belt, so that the top beam moves to a fixed position under the drive of the second conveyor belt; The commutator block is L-shaped, and a coupling block is provided on one side of the commutator block. The cross-sectional shape of the coupling block matches the cross-sectional shape of the side beam. When the end of the side beam approaches the commutator block, the end of the side beam is inserted into the coupling block on the commutator block, thereby forming a coupling connection between the side beam and the commutator block. Two reversing blocks are connected to gears at their ends. The two gears are rotatably mounted on the welding base. A rack is provided below the two gears, and the rack meshes with the gears. One end of the two racks is fixedly connected by a timing frame. An expansion joint is connected to the outer wall of the timing frame, and the other end of the expansion joint is fixed to the welding base. The top of the welding seat is provided with a movable groove, and the baffle can move in the movable groove. The two ends of the baffle are connected to a reversing column and a sliding column. The inner wall of the movable groove is provided with the reversing column and the sliding column. The end of the baffle away from the second conveyor belt is provided with a telescopic rod, which is fixed to the inner wall of the movable groove. The end of the telescopic rod near the baffle is fixed with a rotating sleeve, which is rotatably installed at one end of the baffle. The inner wall of the movable groove is provided with a reversing groove and a sliding groove. The reversing column slides in the reversing groove, and the sliding column slides in the sliding groove. The sliding groove is horizontally set. The stop block is fixedly connected to the inner side of the two reversing blocks and is configured such that when the reversing block is coupled to the side beam and the side beam is in the feeding trough, the stop block can abut the side of the bottom beam. After the bottom beam is conveyed to the position by the first conveyor belt, it stays at the end of the side beam to be welded. When the reversing block is coupled to the side beam and the side beam is in a vertical state, the stop block is stored in the feeding trough as the reversing block rotates.

2. The multi-station welding device based on automobile body processing as described in claim 1, characterized in that: Width-limiting blocks are installed at both ends of the second conveyor belt. The length of the two width-limiting blocks is matched with that of the top beam. The bottom of the two width-limiting blocks is connected to a bidirectional screw. When the bidirectional screw rotates, it can drive the two width-limiting blocks to move closer to each other or further away from each other.

3. The multi-station welding device based on automobile body processing as described in claim 1, characterized in that: The welding machine is slidably installed under the frame. The bottom of the frame has a sliding groove. The top of the welding machine is slidably connected to the inside of the sliding groove. A one-way screw is installed inside the sliding groove. The two ends of the one-way screw are rotatably connected to the inner wall of the sliding groove through bearings. The top of the welding machine is threadedly connected to the one-way screw.

4. The multi-station welding device based on automobile body processing as described in claim 2, characterized in that: The two ends of the bidirectional screw are rotatably connected to the top of the welding seat. Two width limiting blocks have a sandwich panel on one side near the second conveyor belt. The height of the sandwich panel matches the thickness of the second conveyor belt, and the side of the second conveyor belt can be inserted into the sandwich panel.

5. A multi-station welding method based on automobile body processing, employing the multi-station welding apparatus based on automobile body processing as described in any one of claims 1-4, characterized in that, Includes the following steps: S1. The two side beams are conveyed horizontally to the corresponding feeding troughs on the welding seat until the reversing block in the middle of the feeding trough is located. At the same time, the bottom beam is conveyed to the designated welding position through the first conveyor belt at the top of the welding seat. S2. Rotate the horizontal side beam to a vertical position using the reversing block, aligning the bottom end of the side beam with the end of the bottom beam. Then, weld the connection between the vertical side beam and the bottom beam using a welding machine. S3. The top beam is conveyed to the designated welding position via the second conveyor belt at the top of the welding seat. The welded side beam and bottom beam assembly are rotated 90° in the opposite direction of the feeding trough by the reversing block so that the top of the vertical side beam is aligned with the end of the top beam. S4. Weld the connection between the top of the side beam and the top beam using a welding machine to complete the welding of the vehicle body frame.

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