A robotic flexible welding workstation with AI vision guidance for heavy-duty truck crossbeam assembly

Abstract

This invention relates to the field of heavy-duty truck crossbeam welding technology, specifically to an AI vision-guided robotic flexible welding workstation for heavy-duty truck crossbeam assemblies. The workstation includes a welding platform, a loading unit, and a welding unit. The welding platform comprises a platform slide rail, a first platform, and a second platform, both slidably connected to the platform slide rail. A fixing clamp is provided on the top of both the first and second platforms, and a rotating clamp is also provided on the top of both platforms. When the fixing clamp holds the crossbeam, the invention activates an adjusting motor to clamp the workpiece, allowing the clamping plate to better fit the workpiece and align the welding holes, resulting in better welding quality. Since the clamping plate holds the workpiece, the loading unit does not need to support it, allowing the loading unit to perform more operations, such as loading the other side of the crossbeam while welding on one side, thereby improving welding efficiency.

Description

Technical Field

[0001] This invention relates to the field of heavy-duty truck crossbeam welding technology, specifically to an AI vision-guided robotic flexible welding workstation for heavy-duty truck crossbeam assemblies. Background Technology

[0002] Robotic welding workstations are specialized workstations used for metal processing tasks such as welding, cutting, and grinding. They can operate the tools needed for welding work through equipment such as robotic arms, making welding work safer, more efficient, and more convenient. At the same time, by scanning and inspecting the workpieces to be welded, the equipment can weld workpieces of different sizes and shapes.

[0003] Considering that welding the top and bottom of the crossbeam is required during the welding of heavy truck crossbeams, if the crossbeam is installed on the welding platform with bolts, the production efficiency may be reduced due to the long installation and disassembly time. Therefore, the existing technology usually uses clamping to fix the crossbeam. However, when the crossbeam is flipped, since one side of the crossbeam is not welded, the workpiece to be welded may be deviated due to gravity during the flipping, resulting in misalignment of the weld joint of the crossbeam and making it impossible to continue welding. Summary of the Invention

[0004] The purpose of this invention is to provide an AI vision-guided robotic flexible welding workstation for heavy-duty truck crossbeam assemblies, in order to solve the problems mentioned in the background art.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] This invention is a robot flexible welding workstation with AI vision guidance for heavy truck crossbeam assembly, including a welding platform, a feeding unit and a welding unit. The welding platform includes a platform slide rail, a first platform and a second platform. Both the first platform and the second platform are slidably connected to the platform slide rail. The top of both the first platform and the second platform is provided with a fixing clamp and a rotating clamp.

[0007] A rack plate is fixedly connected to the side of the first platform near the second platform, and a sliding groove is provided on the side of the second platform near the first platform. The rack plate is slidably connected to the sliding groove, and the rack plate meshes with the support unit. A sliding groove is provided on the top surface of both the first platform and the second platform, and a clamping unit is slidably connected in the sliding groove.

[0008] The clamping unit includes a support column, an adjusting motor is installed in the sliding groove, and an adjusting screw is fixedly connected to the output end of the adjusting motor. The adjusting screw is sleeved with the support column. A fixing plate is fixedly connected to the top of the support column, and a vibration unit is fixedly connected to the top of the fixing plate. Multiple adjusting grooves are opened on the top of the fixing plate. A sliding plate is slidably connected in the adjusting groove. A rotating shaft is rotatably connected to the side of the sliding plate near the welding platform, and a clamping plate is fixedly connected to the end of the rotating shaft away from the sliding plate.

[0009] Furthermore, a limiting plate is fixedly connected to the top of the side of the fixed plate away from the welding platform. A limiting hole is opened in the middle of the limiting plate, and a limiting shaft is slidably connected in the limiting hole. The end of the limiting shaft near the welding platform is fixedly connected to the sliding plate. A first spring is fixedly connected between the limiting plate and the sliding plate.

[0010] Furthermore, the vibration unit includes a vibration motor, an eccentric disk is fixedly connected to the output end of the vibration motor, a first connecting rod is hinged to the side of the eccentric disk away from the vibration motor, a second connecting rod is hinged to the end of the first connecting rod away from the eccentric disk, and a vibration plate is fixedly connected to the end of the second connecting rod away from the first connecting rod; a limit block is fixedly connected to the top of the fixed plate, a limit groove is formed on the surface of the limit block, and the inner wall of the limit groove is slidably connected to the second connecting rod.

[0011] Furthermore, two rotating holes are provided on the top of the side of the first platform and the second platform that are close to each other, and a first spline shaft is rotatably connected in the rotating holes;

[0012] The support unit includes two adjusting gears, which are rotatably connected to the second platform and mesh with a rack plate. The bottoms of the two first spline shafts are fixedly connected to the adjusting gears. A second spline shaft is slidably connected inside each first spline shaft. An adjusting plate is rotatably connected to the outer wall of the second spline shaft near the top. An electric telescopic rod is fixedly connected to the bottom of the adjusting plate on the side away from the second spline shaft. A first support plate is fixedly connected to the top of every two adjusting plates. A telescopic plate and a telescopic block are fixedly connected to the middle part of the bottom of the first support plate, respectively. The outer wall of the telescopic plate is slidably connected to the telescopic block.

[0013] Furthermore, an adjusting block is fixedly connected to the top of the second spline shaft, and two adjusting holes are opened at the bottom of the first support plate, the adjusting holes being sleeved with the adjusting block.

[0014] Furthermore, the outer wall of the first spline shaft is provided with a transmission groove, and a transmission belt is connected between every two transmission grooves. Two adjustment units are rotatably connected to the inner surface of the transmission belt.

[0015] The adjustment unit includes a fixed block, the bottom of which is fixedly connected to the welding platform. A support groove is provided inside the fixed block, and an adjustment rod is slidably connected in the support groove. A third spring is fixedly connected between the adjustment rod and the support groove. An adjustment wheel is rotatably connected to the side of the adjustment rod away from the fixed block, and the adjustment wheel is rotatably connected to a transmission belt.

[0016] Furthermore, a second spring is fixedly connected to the middle of the top of the first support plate, and the end of the second spring away from the first support plate is fixedly connected to the second support plate.

[0017] Furthermore, the welding platform, the feeding unit, and the welding unit are all equipped with AI vision modules.

[0018] The present invention has the following beneficial effects:

[0019] 1. In this invention, when the fixed fixture clamps the crossbeam, the adjusting motor is activated to clamp the workpiece to be welded by the clamping plate. After clamping the workpiece, the workpiece and the crossbeam are more closely aligned, and the welding holes are more aligned, thereby obtaining better welding quality. When the clamping plate clamps the workpiece, there is no need for the feeding unit to support the workpiece, which allows the feeding unit to perform more operations, such as feeding the other side of the crossbeam while welding on one side, thereby improving welding efficiency.

[0020] 2. When the crossbeam is flipped by the rotating fixture, the rotating shaft will rotate inside the sliding plate, so that the clamping plate always clamps the workpiece. During the rotation, the workpiece can be prevented from deviating due to gravity or other reasons. At the same time, clamping during rotation can prevent the weld from being subjected to force before it is completely cooled, thus avoiding the occurrence of weld detachment.

[0021] 3. The present invention uses the reciprocating motion of the vibrating plate to repeatedly impact the sliding plate, and transmits the vibration to the clamping plate through the sliding plate. When the clamping plate vibrates, the workpiece and the crossbeam vibrate. At this time, the welding stress at the weld can be released through vibration, thereby reducing the welding cracks caused by excessive welding stress, thereby increasing the structural stability after welding and giving the welded structure a greater load-bearing capacity.

[0022] 4. The present invention can drive the first support plate to rise by activating the electric telescopic rod. At this time, the first support plate can support the crossbeam. When the first support plate supports the crossbeam, the middle part of the crossbeam can obtain additional support and can withstand greater pressure and gravity during welding. It can prevent the crossbeam from bending due to gravity due to excessive welding support structure. At the same time, it can reduce the shaking of the middle part of the crossbeam during welding, thereby improving the welding quality. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying 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.

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the welding platform of the present invention;

[0026] Figure 3 This is a cross-sectional view of the welding platform of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the clamping unit of the present invention;

[0028] Figure 5 For the present invention Figure 4 Enlarged view of a portion of point A in the middle;

[0029] Figure 6 This is a partial cross-sectional view of the welding platform of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure at the support unit of the present invention;

[0031] Figure 8 This is an exploded view of the support unit of the present invention;

[0032] Figure 9 This is a cross-sectional view of the adjustment unit of the present invention.

[0033] The attached diagram lists the components represented by each number as follows:

[0034] In the diagram: 1. Welding platform; 11. Platform slide rail; 12. First platform; 121. Rack plate; 13. Second platform; 14. Fixing fixture; 15. Rotating fixture; 2. Clamping unit; 21. Support column; 211. Adjusting screw; 22. Fixing plate; 221. Adjusting groove; 23. Limiting plate; 24. Limiting shaft; 25. Sliding plate; 26. Clamping plate; 261. Rotating shaft; 27. First spring; 3. Vibration unit; 31. Vibration motor; 32. Eccentric disk; 33. First connecting rod; 34. ... Two-link linkage; 341, limiting block; 35, vibrating plate; 4, support unit; 41, adjusting gear; 42, first splined shaft; 421, transmission belt; 43, second splined shaft; 431, adjusting block; 44, electric telescopic rod; 45, adjusting plate; 46, first support plate; 47, telescopic plate; 471, telescopic block; 48, second support plate; 481, second spring; 5, adjusting unit; 51, fixing block; 52, adjusting rod; 53, third spring; 54, adjusting wheel; 6, feeding unit; 7, welding unit. Detailed Implementation

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0036] Please see Figures 1-9 As shown, the present invention is a robot flexible welding workstation with AI vision guidance for heavy truck crossbeam assembly, including a welding platform 1, a feeding unit 6 and a welding unit 7. The welding platform 1 includes a platform slide rail 11, a first platform 12 and a second platform 13. The first platform 12 and the second platform 13 are slidably connected to the platform slide rail 11. The top of the first platform 12 and the second platform 13 are provided with a fixing clamp 14, and the top of the first platform 12 and the second platform 13 are provided with a rotating clamp 15.

[0037] A rack plate 121 is fixedly connected to the side of the first platform 12 near the second platform 13. A sliding groove is provided on the side of the second platform 13 near the first platform 12. The rack plate 121 is slidably connected to the sliding groove and engages with the support unit 4. Sliding grooves are provided on the top surfaces of both the first platform 12 and the second platform 13. A clamping unit 2 is slidably connected in the sliding groove.

[0038] The clamping unit 2 includes a support column 21. An adjusting motor is installed in the sliding groove. An adjusting screw 211 is fixedly connected to the output end of the adjusting motor. The adjusting screw 211 is sleeved with the support column 21. A fixing plate 22 is fixedly connected to the top of the support column 21. A vibration unit 3 is fixedly connected to the top of the fixing plate 22. Multiple adjusting grooves 221 are opened on the top of the fixing plate 22. A sliding plate 25 is slidably connected in the adjusting groove 221. A rotating shaft 261 is rotatably connected to the side of the sliding plate 25 near the welding platform 1. A clamping plate 26 is fixedly connected to the end of the rotating shaft 261 away from the sliding plate 25.

[0039] In this embodiment, considering that welding is required on both the top and bottom of the crossbeam during the welding of the heavy truck crossbeam, if the crossbeam is installed on the welding platform 1 by bolts, the production efficiency may be reduced due to the long installation and disassembly time. Therefore, the prior art usually uses clamping to fix the crossbeam. However, when the crossbeam is flipped, since one side of the crossbeam is not welded, the workpiece to be welded may deviate due to gravity during the flipping, resulting in misalignment of the weld joint of the crossbeam and making it impossible to continue welding.

[0040] When welding the crossbeam of a heavy truck, the crossbeam is first clamped by the fixing clamp 14 of the welding platform 1. Then, the workpiece to be welded is magnetically attracted by the feeding unit 6 and the workpiece is aligned with the welding hole of the crossbeam. At this time, the welding unit 7 welds the crossbeam and the workpiece to the welding hole.

[0041] When the fixed fixture 14 clamps the crossbeam, the adjusting screw 211 is rotated by starting the adjusting motor. The rotation of the adjusting screw 211 causes the support column 21 to move in the slide groove. When the support column 21 moves, it drives the fixed plate 22 to move. When the fixed plate 22 moves, it drives the sliding plate 25 to move. When the sliding plate 25 moves, it drives the rotating shaft 261 to move. When the rotating shaft 261 moves, it drives the clamping plate 26 to move. When the clamping plate 26 moves inward, it clamps the workpiece to be welded. After clamping the workpiece, the workpiece can fit more closely with the crossbeam, and the welding holes can be more aligned, thereby obtaining better welding quality. When the clamping plate 26 clamps the workpiece, the feeding unit 6 does not need to support the workpiece, which allows the feeding unit 6 to perform more operations, such as feeding the other side of the crossbeam while welding on one side of the crossbeam, thereby improving welding efficiency.

[0042] After welding is completed, the rotating clamp 15 will replace the fixed clamp 14 for clamping, and rotate after being clamped by the rotating clamp 15. At this time, the rotated crossbeam can be fixed by clamping it again by the fixed clamp 14.

[0043] When the crossbeam is flipped by the rotating fixture 15, the rotating shaft 261 will rotate within the sliding plate 25, so that the clamping plate 26 always clamps the workpiece. During the rotation, the workpiece can be prevented from deviating due to gravity or other reasons. At the same time, clamping during rotation can prevent the weld from being subjected to force before it has completely cooled down, thus avoiding the occurrence of weld detachment.

[0044] Specifically, a limiting plate 23 is fixedly connected to the top of the side of the fixed plate 22 away from the welding platform 1. A limiting hole is opened in the middle of the limiting plate 23. A limiting shaft 24 is slidably connected in the limiting hole. The end of the limiting shaft 24 near the welding platform 1 is fixedly connected to the sliding plate 25. A first spring 27 is fixedly connected between the limiting plate 23 and the sliding plate 25.

[0045] In this embodiment, considering that there may be some errors when the workpiece is installed on the crossbeam during welding, if the clamping is too tight when it is clamped by the clamping plate 26, the weld may be subjected to greater pressure after welding, and may cause the weld to detach or be incomplete.

[0046] When the clamping plate 26 clamps the crossbeam, the first spring 27 can compress the clamping plate 26 during clamping. During welding, the sliding plate 25 can be moved outward by moving the support frame. At this time, the force of the first spring 27 can continuously clamp the workpiece and the crossbeam. The clamping force is reduced but the workpiece can still be clamped, which can prevent the clamping force from being too large and causing the weld to break off. The limiting shaft 24 can maintain the direction and angle of the sliding plate 25 and the clamping plate 26 during clamping, so as to prevent the angle of the clamping plate 26 from changing and causing the welding hole to be misaligned, thus preventing the welding hole from being misaligned and unable to be welded.

[0047] Specifically, the vibration unit 3 includes a vibration motor 31, the output end of which is fixedly connected to an eccentric disk 32. A first connecting rod 33 is hinged to the side of the eccentric disk 32 away from the vibration motor 31. A second connecting rod 34 is hinged to the end of the first connecting rod 33 away from the eccentric disk 32. A vibration plate 35 is fixedly connected to the end of the second connecting rod 34 away from the first connecting rod 33. A limiting block 341 is fixedly connected to the top of the fixed plate 22. A limiting groove is formed on the surface of the limiting block 341. The inner wall of the limiting groove is slidably connected to the second connecting rod 34.

[0048] In this embodiment, considering that during the welding of the beam, due to the large temperature difference at the weld, the welding stress at the weld may be large. If the welding stress cannot be released after the weld cools down, it may cause cracks at the weld, thereby reducing the load-bearing capacity of the structure and affecting the stability of the structure.

[0049] After welding is completed, the vibration motor 31 is started, causing the eccentric disk 32 to rotate. When the eccentric disk 32 rotates, it pulls the first connecting rod 33 to reciprocate, and drives the second connecting rod 34 to reciprocate. When the second connecting rod 34 reciprocates, it slides in the limiting groove of the limiting block 341. By limiting the second connecting rod 34, it can maintain linear motion. When the second connecting rod 34 reciprocates, it drives the vibrating plate 35 to reciprocate. The reciprocating motion of the vibrating plate 35 can repeatedly impact the sliding plate 25, and the vibration is transmitted to the clamping plate 26 through the sliding plate 25. When the clamping plate 26 vibrates, it causes the workpiece and the crossbeam to vibrate. At this time, the welding stress at the weld can be released through vibration, thereby reducing the welding cracks caused by excessive welding stress, thus increasing the structural stability after welding and giving the welded structure a greater load-bearing capacity.

[0050] Specifically, two rotating holes are provided on the top of the side of the first platform 12 and the second platform 13 that are close to each other, and a first spline shaft 42 is rotatably connected in the rotating holes;

[0051] The support unit 4 includes two adjusting gears 41, which are rotatably connected to the second platform 13. Each adjusting gear 41 meshes with a rack plate 121. The bottoms of the two first spline shafts 42 are fixedly connected to the adjusting gears 41. A second spline shaft 43 is slidably connected inside each first spline shaft 42. An adjusting plate 45 is rotatably connected to the outer wall of the second spline shaft 43 near the top. An electric telescopic rod 44 is fixedly connected to the bottom of the side of the adjusting plate 45 away from the second spline shaft 43. A first support plate 46 is fixedly connected to the top of each pair of adjusting plates 45. A telescopic plate 47 and a telescopic block 471 are fixedly connected to the middle part of the bottom of the first support plate 46, respectively. The outer wall of the telescopic plate 47 is slidably connected to the telescopic block 471.

[0052] In this embodiment, considering that the middle part of the crossbeam may be welded with supporting structures such as reinforcing ribs to increase the load-bearing capacity of the crossbeam, the welding platform 1 can only support the two ends of the crossbeam. When welding is performed on the middle part of the crossbeam, the crossbeam may bend due to lack of support.

[0053] When the middle of the crossbeam needs support, the electric telescopic rod 44 can be activated to raise the adjusting plate 45. When the adjusting plate 45 rises, it will raise the second spline shaft 43. When the adjusting plate 45 rises, it will raise the first support plate 46. At this time, the first support plate 46 can support the crossbeam. When the first support plate 46 supports the crossbeam, the middle of the crossbeam can receive additional support and can withstand greater pressure and gravity during welding. This can prevent the crossbeam from bending due to gravity due to excessive welding support structures. At the same time, it can reduce the shaking of the middle of the crossbeam during welding, thereby improving the welding quality.

[0054] Specifically, an adjusting block 431 is fixedly connected to the top of the second spline shaft 43, and two adjusting holes are opened at the bottom of the first support plate 46, the adjusting holes being sleeved with the adjusting block 431.

[0055] In this embodiment, considering the need for stronger support when welding longer crossbeams to prevent them from bending due to gravity, the rack plate 121 moves as the first platform 12 moves outward. When the rack plate 121 moves, the adjusting gear 41 rotates, which in turn drives the first spline shaft 42 and the second spline shaft 43 to rotate. When the second spline shaft 43 rotates, it drives the adjusting block 431 to rotate. Since the adjusting block 431 is engaged with the adjusting hole and the first support plate 46 cannot rotate, the first support plate 46 moves upward when the adjusting block 431 rotates. This provides stronger support when welding longer crossbeams, thus preventing them from bending due to gravity.

[0056] Specifically, the outer wall of the first spline shaft 42 is provided with a transmission groove, and a transmission belt 421 is connected between every two transmission grooves. Two adjustment units 5 are rotatably connected to the inner surface of the transmission belt 421.

[0057] The adjustment unit 5 includes a fixed block 51. The bottom of the fixed block 51 is fixedly connected to the welding platform 1. A support groove is provided inside the fixed block 51. An adjustment rod 52 is slidably connected in the support groove. A third spring 53 is fixedly connected between the adjustment rod 52 and the support groove. An adjustment wheel 54 is rotatably connected to the side of the adjustment rod 52 away from the fixed block 51. The adjustment wheel 54 is rotatably connected to the transmission belt 421.

[0058] In this embodiment, considering that only the first spline shaft 42 on one side of the second platform 13 has an adjusting gear 41 that can rotate, when the first spline shaft 42 rotates, the second spline shaft 43 and the adjusting block 431 rotate, resulting in different forces on both sides of the crossbeam. Although only one first support plate 46 can support the crossbeam to prevent it from bending, when encountering a longer crossbeam, it may cause the other side of the crossbeam to still bend.

[0059] The transmission groove and transmission belt 421 can transmit the power of the first spline shaft 42 on one side of the second platform 13 to the first spline shaft 42 on the one side of the first platform 12. This allows the first spline shaft 42 to rotate synchronously. When the first spline shaft 42 rotates synchronously, the second spline shaft 43 and the adjusting block 431 can also rotate synchronously. This allows the two first support plates 46 to rise synchronously, thus ensuring that the force on both sides is uniform. It can also provide support when welding longer crossbeams and reduce the bending of crossbeams due to gravity.

[0060] When the first platform 12 and the second platform 13 move outward, the transmission belt 421 will press the adjusting wheel 54 to retract. When the adjusting wheel 54 is under force, it will drive the adjusting rod 52 to move inward into the fixed block 51 and compress the third spring 53, thereby adapting to welding of different lengths.

[0061] Specifically, a second spring 481 is fixedly connected to the middle of the top of the first support plate 46, and a second support plate 48 is fixedly connected to the end of the second spring 481 away from the first support plate 46.

[0062] In this embodiment, considering that when supporting a long crossbeam and the crossbeam has not yet been welded with a support structure, the support provided by the first support plate 46 is a rigid support, which may cause the crossbeam to bend upward due to excessive support force.

[0063] When the first support plate 46 supports the crossbeam, the crossbeam can be supported by the second spring 481 and the second support plate 48. When supporting the crossbeam, the second spring 481 is compressed to reduce the supporting force. While reducing the supporting force by the second spring 481, the support will not fail.

[0064] Specifically, the welding platform 1, the feeding unit 6, and the welding unit 7 are all equipped with AI vision modules.

[0065] In this embodiment, by installing an AI vision module, the position and shape of the crossbeam can be analyzed using AI algorithms during equipment use, and the welding unit 7 can be guided to move precisely. At the same time, by combining historical welding data, the results under different welding parameters can be analyzed, and the parameters can be automatically adjusted to achieve the best welding effect.

[0066] When using,

[0067] First, when welding the crossbeam of the heavy truck, the crossbeam is clamped by the fixing clamp 14 of the welding platform 1. Then, the workpiece to be welded is magnetically attracted by the feeding unit 6 and the workpiece is aligned with the welding hole of the crossbeam. At this time, the welding unit 7 welds the crossbeam and the workpiece to the welding hole.

[0068] When the fixed fixture 14 clamps the crossbeam, the adjusting screw 211 is rotated by starting the adjusting motor. The rotation of the adjusting screw 211 causes the support column 21 to move in the slide groove. When the support column 21 moves, it drives the fixed plate 22 to move. When the fixed plate 22 moves, it drives the sliding plate 25 to move. When the sliding plate 25 moves, it drives the rotating shaft 261 to move. When the rotating shaft 261 moves, it drives the clamping plate 26 to move. When the clamping plate 26 moves inward, it clamps the workpiece to be welded. After clamping the workpiece, the workpiece can fit more closely with the crossbeam, and the welding holes can be more aligned, thereby obtaining better welding quality. When the clamping plate 26 clamps the workpiece, the feeding unit 6 does not need to support the workpiece, which allows the feeding unit 6 to perform more operations, such as feeding the other side of the crossbeam while welding on one side of the crossbeam, thereby improving welding efficiency.

[0069] When the clamping plate 26 clamps the crossbeam, the first spring 27 can compress the clamping plate 26 during clamping. During welding, the sliding plate 25 can be moved outward by moving the support frame. At this time, the force of the first spring 27 can continuously clamp the workpiece and the crossbeam. The clamping force is reduced but the workpiece can still be clamped, which can prevent the clamping force from being too large and causing the weld to break off. The limiting shaft 24 can maintain the direction and angle of the sliding plate 25 and the clamping plate 26 during clamping, so as to prevent the angle of the clamping plate 26 from changing and causing the welding hole to be misaligned, thus preventing the welding hole from being misaligned and unable to be welded.

[0070] Secondly, when it is necessary to support the middle of the crossbeam, the electric telescopic rod 44 can be activated to drive the adjusting plate 45 to rise. When the adjusting plate 45 rises, it will drive the second spline shaft 43 to rise. When the adjusting plate 45 rises, it will drive the first support plate 46 to rise. At this time, the first support plate 46 can support the crossbeam. When the first support plate 46 supports the crossbeam, the middle of the crossbeam can receive additional support and can withstand greater pressure and gravity during welding. This can prevent the crossbeam from bending due to gravity due to excessive welding support structures. At the same time, it can reduce the shaking of the middle of the crossbeam during welding, thereby improving the welding quality.

[0071] When the first platform 12 moves outward, it drives the rack plate 121 to move. When the rack plate 121 moves, it can make the adjusting gear 41 rotate. The rotation of the adjusting gear 41 drives the first spline shaft 42 and the second spline shaft 43 to rotate. When the second spline shaft 43 rotates, it will drive the adjusting block 431 to rotate. Since the adjusting block 431 is engaged with the adjusting hole and the first support plate 46 cannot rotate, the first support plate 46 will move upward when the adjusting block 431 rotates. This can provide stronger support when welding a long crossbeam, thereby preventing the crossbeam from bending due to gravity.

[0072] The transmission groove and transmission belt 421 can transmit the power of the first spline shaft 42 on one side of the second platform 13 to the first spline shaft 42 on the one side of the first platform 12. This allows the first spline shaft 42 to rotate synchronously. When the first spline shaft 42 rotates synchronously, the second spline shaft 43 and the adjusting block 431 can also rotate synchronously. This allows the two first support plates 46 to rise synchronously, thus ensuring that the force on both sides is uniform. It can also provide support when welding longer crossbeams and reduce the bending of crossbeams due to gravity.

[0073] When the first support plate 46 supports the crossbeam, the crossbeam can be supported by the second spring 481 and the second support plate 48. When supporting the crossbeam, the second spring 481 is compressed to reduce the supporting force. While reducing the supporting force by the second spring 481, the support will not fail.

[0074] Finally, after welding is completed, the rotating clamp 15 will replace the fixed clamp 14 for clamping, and rotate after being clamped by the rotating clamp 15. At this time, the rotated crossbeam can be fixed by clamping it again by the fixed clamp 14.

[0075] When the crossbeam is flipped by the rotating fixture 15, the rotating shaft 261 will rotate within the sliding plate 25, so that the clamping plate 26 always clamps the workpiece. During the rotation, the workpiece can be prevented from deviating due to gravity or other reasons. At the same time, clamping during rotation can prevent the weld from being subjected to force before it has completely cooled down, thus avoiding the occurrence of weld detachment.

[0076] After welding is completed, the vibration motor 31 is started, causing the eccentric disk 32 to rotate. When the eccentric disk 32 rotates, it pulls the first connecting rod 33 to reciprocate, and drives the second connecting rod 34 to reciprocate. When the second connecting rod 34 reciprocates, it slides in the limiting groove of the limiting block 341. By limiting the second connecting rod 34, it can maintain linear motion. When the second connecting rod 34 reciprocates, it drives the vibrating plate 35 to reciprocate. The reciprocating motion of the vibrating plate 35 can repeatedly impact the sliding plate 25, and the vibration is transmitted to the clamping plate 26 through the sliding plate 25. When the clamping plate 26 vibrates, it causes the workpiece and the crossbeam to vibrate. At this time, the welding stress at the weld can be released through vibration, thereby reducing the welding cracks caused by excessive welding stress, thus increasing the structural stability after welding and giving the welded structure a greater load-bearing capacity.

[0077] 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 robot flexible welding workstation for heavy truck crossbeam assembly guided by AI vision, comprising a welding platform (1), a feeding unit (6) and a welding unit (7), wherein the welding platform (1) comprises a platform slide rail (11), a first platform (12) and a second platform (13), the first platform (12) and the second platform (13) are slidably connected to the platform slide rail (11), the top of the first platform (12) and the second platform (13) are provided with a fixing clamp (14), and the top of the first platform (12) and the second platform (13) are provided with a rotating clamp (15); Its characteristics are: A rack plate (121) is fixedly connected to the side of the first platform (12) near the second platform (13). A sliding groove is provided on the side of the second platform (13) near the first platform (12). The rack plate (121) is slidably connected to the sliding groove. The rack plate (121) meshes with the support unit (4). A sliding groove is provided on the top surface of both the first platform (12) and the second platform (13). A clamping unit (2) is slidably connected in the sliding groove. The clamping unit (2) includes a support column (21), an adjusting motor is provided in the slide groove, and an adjusting screw (211) is fixedly connected to the output end of the adjusting motor. The adjusting screw (211) is sleeved with the support column (21). A fixing plate (22) is fixedly connected to the top of the support column (21), and a vibration unit (3) is fixedly connected to the top of the fixing plate (22). Multiple adjusting slots (221) are opened on the top of the fixing plate (22). A sliding plate (25) is slidably connected in the adjusting slot (221). A rotating shaft (261) is rotatably connected to the side of the sliding plate (25) close to the welding platform (1). A clamping plate (26) is fixedly connected to the end of the rotating shaft (261) away from the sliding plate (25). A limiting plate (23) is fixedly connected to the top of the side of the fixed plate (22) away from the welding platform (1). A limiting hole is opened in the middle of the limiting plate (23). A limiting shaft (24) is slidably connected in the limiting hole. The end of the limiting shaft (24) near the welding platform (1) is fixedly connected to the sliding plate (25). A first spring (27) is fixedly connected between the limiting plate (23) and the sliding plate (25). The vibration unit (3) includes a vibration motor (31), and an eccentric disk (32) is fixedly connected to the output end of the vibration motor (31). A first connecting rod (33) is hinged to the side of the eccentric disk (32) away from the vibration motor (31). A second connecting rod (34) is hinged to the end of the first connecting rod (33) away from the eccentric disk (32). A vibration plate (35) is fixedly connected to the end of the second connecting rod (34) away from the first connecting rod (33). A limiting block (341) is fixedly connected to the top of the fixed plate (22). A limiting groove is opened on the surface of the limiting block (341). The inner wall of the limiting groove is slidably connected to the second connecting rod (34).

2. The AI ​​vision-guided robotic flexible welding workstation for heavy-duty truck crossbeam assembly according to claim 1, characterized in that: Two rotating holes are provided on the top of the side of the first platform (12) and the second platform (13) that are close to each other, and a first spline shaft (42) is rotatably connected in the rotating holes; The support unit (4) includes two adjusting gears (41), which are rotatably connected to the second platform (13). The adjusting gears (41) mesh with the rack plate (121). The bottoms of the two first spline shafts (42) are fixedly connected to the adjusting gears (41). A second spline shaft (43) is slidably connected inside each first spline shaft (42). An adjusting plate (45) is rotatably connected to the outer wall of the second spline shaft (43) near the top. An electric telescopic rod (44) is fixedly connected to the bottom of the adjusting plate (45) on the side away from the second spline shaft (43). A first support plate (46) is fixedly connected to the top of each pair of adjusting plates (45). A telescopic plate (47) and a telescopic block (471) are fixedly connected to the middle part of the bottom of the first support plate (46). The outer wall of the telescopic plate (47) is slidably connected to the telescopic block (471).

3. The AI ​​vision-guided robotic flexible welding workstation for heavy-duty truck crossbeam assembly according to claim 2, characterized in that: An adjusting block (431) is fixedly connected to the top of the second spline shaft (43), and two adjusting holes are opened at the bottom of the first support plate (46), and the adjusting holes are sleeved with the adjusting block (431).

4. The AI ​​vision-guided robotic flexible welding workstation for heavy-duty truck crossbeam assembly according to claim 3, characterized in that: The outer wall of the first spline shaft (42) is provided with a transmission groove, and a transmission belt (421) is connected between every two transmission grooves. Two adjustment units (5) are rotatably connected to the inner surface of the transmission belt (421). The adjustment unit (5) includes a fixed block (51), the bottom of which is fixedly connected to the welding platform (1). A support groove is provided inside the fixed block (51), and an adjustment rod (52) is slidably connected in the support groove. A third spring (53) is fixedly connected between the adjustment rod (52) and the support groove. An adjustment wheel (54) is rotatably connected to the side of the adjustment rod (52) away from the fixed block (51), and the adjustment wheel (54) is rotatably connected to the transmission belt (421).

5. The AI ​​vision-guided robotic flexible welding workstation for heavy-duty truck crossbeam assembly according to claim 2, characterized in that: A second spring (481) is fixedly connected to the middle of the top of the first support plate (46), and a second support plate (48) is fixedly connected to the end of the second spring (481) away from the first support plate (46).

6. The AI ​​vision-guided robotic flexible welding workstation for heavy-duty truck crossbeam assembly according to claim 1, characterized in that: The welding platform (1), the feeding unit (6), and the welding unit (7) are all equipped with AI vision modules.

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