Robot flexible welding workstation for AI visual guidance of heavy truck beam assembly

Abstract

The invention relates to the technical field of heavy truck beam welding, in particular to a heavy truck beam assembly AI visual guidance robot flexible welding workstation which comprises a welding platform, a feeding unit and a welding unit, the welding platform comprises a platform sliding rail, a first platform and a second platform, and the first platform and the second platform are both slidably connected with the platform sliding rail; the top of the first platform and the top of the second platform are each provided with a fixing clamp, and the top of the first platform and the top of the second platform are each provided with a rotating clamp. When the fixing clamp clamps the cross beam, the adjusting motor is started to enable the clamping plate to clamp a welded workpiece, the workpiece and the cross beam can be better attached, welding holes are more aligned, and therefore better welding quality is obtained; when the workpiece is clamped by the clamping plate, the workpiece does not need to be supported by the feeding unit, the feeding unit can carry out more operations, for example, feeding is carried out on the other side of the cross beam when one side of the cross beam is welded, and therefore the welding efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of heavy truck crossbeam welding, and particularly to a robot flexible welding workstation with AI vision guidance for a heavy truck crossbeam assembly. Background Art

[0002] A robot welding workstation is a special workstation for metal processing work such as welding, cutting, and grinding. It can operate the tools required for welding work through equipment such as robotic arms, making the welding work safer, more efficient, and more convenient. At the same time, by scanning and detecting the welded workpieces, the equipment can weld workpieces of different sizes and shapes.

[0003] Considering that when welding a heavy truck crossbeam, it is necessary to weld the upper and lower sides of the crossbeam. If the crossbeam is installed on the welding platform through bolts or the like, the production efficiency may be reduced due to the long installation and disassembly time. Therefore, the prior art usually uses a clamping method to fix the crossbeam. However, when the crossbeam is flipped, since one side of the crossbeam is not welded, the welded workpiece may deviate due to gravity during flipping, resulting in misalignment of the weld joints of the crossbeam and causing the welding to be unable to continue. Summary of the Invention

[0004] The purpose of the present invention is to provide a robot flexible welding workstation with AI vision guidance for a heavy truck crossbeam assembly to solve the problems raised in the above background art.

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

[0006] The present invention is a robot flexible welding workstation with AI vision guidance for a heavy truck crossbeam assembly, including a welding platform, a loading unit, and a welding unit. The welding platform includes platform rails, a first platform, and a second platform. The first platform and the second platform are both slidably connected to the platform rails. Fixed clamps are provided on the tops of both the first platform and the second platform. Rotating clamps are provided on the tops of both the first platform and the second platform.

[0007] A rack plate is fixedly connected to one side of the first platform close to the second platform. A sliding groove is provided on one side of the second platform close to the first platform. The rack plate is slidably connected to the sliding groove and meshes with a support unit. Sliding grooves are provided on the top surfaces of both the first platform and the second platform, and clamping units are slidably connected to the sliding grooves.

[0008] The clamping unit includes a support column, an adjustment motor is arranged in the sliding groove, an output end of the adjustment motor is fixedly connected with an adjustment screw rod, and the adjustment screw rod is sleeved on the support column; a fixing plate is fixedly connected to the top of the support column, a vibration unit is fixedly connected to the top of the fixing plate, and a plurality of adjustment grooves are formed in the top of the fixing plate; a sliding plate is slidably connected in the adjustment groove, a rotating shaft is rotatably connected to a side of the sliding plate close to the welding platform, and a clamping plate is fixedly connected to an end of the rotating shaft away from the sliding plate.

[0009] Further, a limiting plate is fixedly connected to a top of a side of the fixing plate away from the welding platform, a limiting hole is formed in a middle of the limiting plate, a limiting shaft is slidably connected in the limiting hole, and an end of the limiting shaft close to 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] Further, the vibration unit includes a vibration motor, an output end of the vibration motor is fixedly connected with an eccentric disc, a first connecting rod is hinged to a side of the eccentric disc away from the vibration motor, a second connecting rod is hinged to an end of the first connecting rod away from the eccentric disc, and a vibration plate is fixedly connected to an end of the second connecting rod away from the first connecting rod; a limiting block is fixedly connected to the top of the fixing plate, a limiting through groove is formed in a surface of the limiting block, and an inner wall of the limiting through groove is slidably connected to the second connecting rod.

[0011] Further, two rotating holes are formed in tops of sides of the first platform and the second platform close to each other, and a first spline shaft is rotatably connected in the rotating holes;

[0012] The support unit includes two adjustment gears, the adjustment gears are rotatably connected to the second platform, and the adjustment gears are both meshed with a rack plate; bottoms of the two first spline shafts are fixedly connected to the adjustment gears; a second spline shaft is slidably connected in each first spline shaft, an adjusting plate is rotatably connected to an outer wall of the second spline shaft close to the top, an electric telescopic rod is fixedly connected to a bottom of a side of the adjusting plate away from the second spline shaft, a first support plate is fixedly connected to tops of every two adjusting plates, a telescopic plate and a telescopic block are respectively fixedly connected to a middle of a bottom of the first support plate, and the outer wall of the telescopic plate is slidably connected to the telescopic block.

[0013] Further, an adjustment block is fixedly connected to the top of the second spline shaft, and two adjustment holes are formed in the bottom of the first support plate, and the adjustment block is sleeved in the adjustment holes.

[0014] Further, drive grooves are formed in outer walls of the first spline shafts, a drive belt is connected between every two drive grooves in a transmission manner, and two adjustment units are rotatably connected to an inner surface of the drive belt.

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

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

[0017] Further, 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. When the fixed fixture clamps the cross beam in the present invention, by starting the adjusting motor, the clamping plate clamps the workpiece to be welded. After clamping the workpiece, the workpiece can be more closely attached to the cross beam, and the welding holes can be 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 enables the feeding unit to perform more operations, such as feeding on the other side of the cross beam when welding on one side of the cross beam. Thus, the welding efficiency can be improved.

[0020] 2. When the cross beam is flipped by the rotating fixture in the present invention, the rotating shaft rotates in the sliding plate, so that the clamping plate always clamps the workpiece. During the rotation process, it can prevent the workpiece from deviating due to gravity and other reasons. At the same time, clamping during rotation can prevent the welded part from being stressed before it is completely cooled, and can avoid the occurrence of welding detachment.

[0021] 3. In the present invention, the reciprocating motion of the vibrating plate can repeatedly impact the sliding plate, and the vibration is transmitted to the clamping plate through the sliding plate. When the clamping plate vibrates, the workpiece and the cross beam will vibrate. At this time, the welding stress at the welding joint can be released through vibration, thereby reducing welding cracks caused by excessive welding stress, increasing the structural stability after welding, and enabling the welded structure to have a greater bearing capacity.

[0022] 4. In the present invention, by starting the electric telescopic rod, the first support plate can be driven to rise. At this time, the first support plate can support the cross beam. When the first support plate supports the cross beam, the middle part of the cross beam can obtain additional support, and it can withstand greater pressure and gravity during welding, which can prevent the cross beam from bending due to gravity caused by too many welding support structures. At the same time, during welding, the shaking in the middle of the cross beam can be reduced, thereby improving the welding quality. Description of the Drawings

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0024] Figure 1 Schematic diagram of the overall structure of the present invention;

[0025] Figure 2 Schematic diagram of the structure at the welding platform of the present invention;

[0026] Figure 3 Cross-sectional view of the welding platform of the present invention;

[0027] Figure 4 Schematic diagram of the structure at the clamping unit of the present invention;

[0028] Figure 5 For the present invention Figure 4 Partial enlarged view at position A in;

[0029] Figure 6 Partial cross-sectional view of the welding platform of the present invention;

[0030] Figure 7 Schematic diagram of the structure at the support unit of the present invention;

[0031] Figure 8 Exploded view of the support unit of the present invention;

[0032] Figure 9 Cross-sectional view of the adjustment unit of the present invention.

[0033] In the accompanying drawings, the list of components represented by each reference numeral is as follows:

[0034] In the figure: 1. Welding platform; 11. Platform slide rail; 12. First platform; 121. Rack plate; 13. Second platform; 14. Fixed fixture; 15. Rotating fixture; 2. Clamping unit; 21. Support column; 211. Adjusting screw; 22. Fixed plate; 221. Adjusting groove; 23. Limit plate; 24. Limit shaft; 25. Sliding plate; 26. Clamping plate; 261. Rotating shaft; 27. First spring; 3. Vibration unit; 31. Vibration motor; 32. Eccentric disc; 33. First connecting rod; 34. Second connecting rod; 341. Limit block; 35. Vibration plate; 4. Support unit; 41. Adjusting gear; 42. First spline shaft; 421. Transmission belt; 43. Second spline 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. Fixed block; 52. Adjusting rod; 53. Third spring; 54. Adjusting wheel; 6. Loading unit; 7. Welding unit. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Please refer to Figures 1-9 As shown in the figure, the present invention is a robot flexible welding workstation with AI vision guidance for a heavy truck crossbeam assembly, including a welding platform 1, a loading 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 both slidably connected to the platform slide rail 11. Fixed fixtures 14 are provided on the tops of the first platform 12 and the second platform 13, and rotating fixtures 15 are provided on the tops of the first platform 12 and the second platform 13.

[0037] A rack plate 121 is fixedly connected to one side of the first platform 12 close to the second platform 13. A sliding groove is opened on one side of the second platform 13 close to the first platform 12. The rack plate 121 is slidably connected to the sliding groove, and the rack plate 121 meshes with the support unit 4. Sliding grooves are opened on the top surfaces of the first platform 12 and the second platform 13, and a clamping unit 2 is slidably connected in the sliding grooves.

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

[0039] In this embodiment, considering that when welding a heavy truck crossbeam, it is necessary to weld the upper and lower sides of the crossbeam. If the crossbeam is installed on the welding platform 1 by bolts or the like, the production efficiency may be reduced due to the long installation and disassembly time. Therefore, the prior art usually uses a clamping method to fix the crossbeam. However, when the crossbeam is flipped, since one side of the crossbeam is not welded, the welded workpiece may deviate due to gravity during flipping, resulting in misalignment of the welding joints of the crossbeam and inability to continue welding.

[0040] When welding a heavy truck crossbeam, first clamp the crossbeam through the fixing fixture 14 of the welding platform 1. Then, use magnetic adsorption to hold the workpiece to be welded through the feeding unit 6, and align the welding holes of the workpiece and the crossbeam. At this time, weld the welding holes of the crossbeam and the workpiece through the welding unit 7.

[0041] When the fixing fixture 14 clamps the crossbeam, start the adjusting motor to drive the adjusting screw 211 to rotate. At this time, the rotation of the adjusting screw 211 will cause the support column 21 to move in the sliding groove. When the support column 21 moves, it will drive the fixing plate 22 to move. When the fixing plate 22 moves, it will drive the sliding plate 25 to move. When the sliding plate 25 moves, it will drive the rotating shaft 261 to move. When the rotating shaft 261 moves, it will drive the clamping plate 26 to move. When the clamping plate 26 moves inward, it will clamp the welded workpiece. After clamping the workpiece, the workpiece can be more closely attached to the crossbeam, making the welding holes more aligned, thereby obtaining better welding quality. When the clamping plate 26 clamps the workpiece, there is no need for the feeding unit 6 to support the workpiece, which allows the feeding unit 6 to perform more operations, such as feeding on the other side of the crossbeam when welding one side of the crossbeam. Thus, the welding efficiency can be improved.

[0042] After welding is completed, the rotating fixture 15 will replace the fixing fixture 14 for clamping and rotate after the rotating fixture 15 clamps. At this time, clamp again through the fixing fixture 14 to fix the rotated crossbeam.

[0043] When the crossbeam is flipped by the rotating fixture 15, the rotating shaft 261 rotates within the sliding plate 25, so that the clamping plate 26 always clamps the workpiece. During the rotation, it can prevent the workpiece from deviating due to gravity or other reasons. At the same time, clamping during rotation can prevent the welded part from being stressed before it is completely cooled, and can avoid the occurrence of welding 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 formed in the middle of the limiting plate 23. A limiting shaft 24 is slidably connected within the limiting hole. One end of the limiting shaft 24 close to 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 when welding the crossbeam, there may be some errors when the workpiece is installed on the crossbeam. When it is clamped by the clamping plate 26, if the clamping is too tight, it may cause a large pressure on the welded part after welding, and may cause welding detachment or incomplete welding at the welded part;

[0046] When the clamping plate 26 clamps the crossbeam, the first spring 27 can be compressed when the clamping plate 26 clamps. When 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. At this time, the clamping force decreases but still can clamp the workpiece, which can avoid welding detachment caused by excessive clamping force; through the setting of the limiting shaft 24, the direction and angle of the sliding plate 25 and the clamping plate 26 can be maintained during clamping, so as to avoid the angle of the clamping plate 26 changing and causing the welding holes to be misaligned, and to prevent the situation where welding cannot be performed due to misaligned welding holes.

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

[0048] In this embodiment, considering that when welding the crossbeam, due to a large temperature difference generated at the welded part, the welding stress at the welded part may be large. If the welding stress cannot be released after the welded part cools, it may cause cracks at the welded part, thereby reducing the bearing capacity of the structure and affecting the stability of the structure;

[0049] After welding is completed, by starting the vibration motor 31, the vibration motor 31 drives the eccentric disc 32 to rotate. When the eccentric disc 32 rotates, it will drive the first connecting rod 33 to reciprocate, and drive the second connecting rod 34 to reciprocate. When the second connecting rod 34 reciprocates, it will slide in the limit through groove of the limit block 341. By limiting the second connecting rod 34, the second connecting rod 34 can be kept in a straight-line motion. When the second connecting rod 34 reciprocates, it will drive the vibration plate 35 to reciprocate. Through the reciprocating motion of the vibration plate 35, the sliding plate 25 can be repeatedly impacted, and the vibration is transmitted to the clamping plate 26 through the sliding plate 25. When the clamping plate 26 vibrates, the workpiece and the cross beam will vibrate. At this time, through vibration, the welding stress at the welding joint can be released, thereby reducing the welding cracks caused by excessive welding stress, increasing the structural stability after welding, and enabling the structure after welding to have a greater bearing capacity.

[0050] Specifically, two rotation holes are respectively opened at the top of the sides where the first platform 12 and the second platform 13 are close to each other, and a first spline shaft 42 is rotatably connected in the rotation hole;

[0051] The support unit 4 includes two adjusting gears 41, the adjusting gears 41 are rotatably connected to the second platform 13, and the adjusting gears 41 are respectively meshed 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 in each first spline shaft 42, a regulating 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 regulating plate 45 away from the second spline shaft 43, a first support plate 46 is fixedly connected to the top of every two regulating plates 45, a telescopic plate 47 and a telescopic block 471 are respectively fixedly connected to the middle of the bottom of the first support plate 46, and the outer wall of the telescopic plate 47 is slidably connected to the telescopic block 471.

[0052] In this embodiment, considering that support structures such as welding stiffeners may be welded in the middle of the cross beam to increase the bearing capacity of the cross beam, but the welding platform 1 can only support at both ends of the cross beam. When welding the middle of the cross beam, the cross beam may bend due to lack of support;

[0053] When it is necessary to support the middle part of the cross beam, starting the electric telescopic rod 44 can drive the adjusting plate 45 to rise. When the adjusting plate 45 rises, it will drive the second spline shaft 43 to rise, and 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 cross beam. When the first support plate 46 supports the cross beam, the middle part of the cross beam can obtain additional support, and it can withstand greater pressure and gravity during welding, which can prevent the cross beam from bending due to gravity caused by too many welding support structures. At the same time, during welding, the shaking of the middle part of the cross beam can be reduced, thereby improving the welding quality.

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

[0055] In this embodiment, considering that stronger support force is required when welding a longer cross beam to prevent the cross beam from bending due to gravity; 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 regulating gear 41 rotate, and the rotation of the regulating 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 regulating block 431 to rotate. Since the regulating block 431 cooperates with the regulating hole and the first support plate 46 cannot rotate, when the regulating block 431 rotates, the first support plate 46 will move upward. Thus, stronger support force can be obtained when welding a longer cross beam, and the cross beam can be prevented from bending due to gravity.

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

[0057] The regulating 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 opened inside the fixed block 51. An adjusting rod 52 is slidably connected in the support groove. A third spring 53 is fixedly connected between the adjusting rod 52 and the support groove. The adjusting rod 52 is rotatably connected to a regulating wheel 54 on the side away from the fixed block 51, and the regulating 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 a regulating gear 41 that can rotate. When the first spline shaft 42 rotates, the second spline shaft 43 and the regulating block 431 rotate, resulting in different forces on both sides of the cross beam. Although only one first support plate 46 can prevent the cross beam from bending, when encountering a longer cross beam, it may still cause the other side of the cross beam to bend;

[0059] Through the settings of the transmission groove and the transmission belt 421, the power of the first spline shaft 42 on one side of the second platform 13 can be transmitted to the first spline shaft 42 on one side of the first platform 12, so that the first spline shafts 42 can rotate synchronously. When the first spline shafts 42 rotate synchronously, the second spline shafts 43 and the adjusting blocks 431 can also rotate synchronously, so that the two first support plates 46 can rise synchronously, ensuring uniform force on both sides. It can also support when welding longer crossbeams and reduce the bending of the crossbeam due to gravity.

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

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

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

[0063] When the first support plate 46 supports the crossbeam, through the settings of the second spring 481 and the second support plate 48, the crossbeam can be supported, and the support force can be reduced by compressing the second spring 481 when supporting the crossbeam, and the support will not fail while reducing the support force by the second spring 481.

[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 the AI vision module, when the equipment is in use, the position and shape of the crossbeam can be analyzed through AI algorithms, 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] During use,

[0067] First, when welding a heavy truck crossbeam, first clamp the crossbeam through the fixed fixture 14 of the welding platform 1, and then use magnetic adsorption to hold the workpiece to be welded through the feeding unit 6 and align the welding holes of the workpiece with the crossbeam. At this time, the welding unit 7 welds the welding holes of the crossbeam and the workpiece.

[0068] When the fixed fixture 14 clamps the cross beam, the adjustment motor is started to drive the adjustment screw 211 to rotate. At this time, the rotation of the adjustment screw 211 will cause the support column 21 to move in the chute. When the support column 21 moves, it will drive the fixed plate 22 to move. When the fixed plate 22 moves, it will drive the sliding plate 25 to move. When the sliding plate 25 moves, it will drive the rotating shaft 261 to move. When the rotating shaft 261 moves, it will drive the clamping plate 26 to move. When the clamping plate 26 moves inward, it will clamp the welded workpiece. After clamping the workpiece, the workpiece can be more closely attached to the cross beam, and the welding holes can be more aligned, thereby obtaining better welding quality. When the clamping plate 26 clamps the workpiece and there is no need for the feeding unit 6 to support the workpiece, the feeding unit 6 can perform more operations, such as feeding the other side of the cross beam when welding one side of the cross beam. Thus, the welding efficiency can be improved.

[0069] When the clamping plate 26 clamps the cross beam, the first spring 27 can be compressed when the clamping plate 26 clamps. When 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 cross beam. At this time, the clamping force decreases but still can clamp the workpiece, which can prevent the welding from coming loose due to excessive clamping force. Through the setting of the limit shaft 24, the direction and angle of the sliding plate 25 and the clamping plate 26 can be maintained during clamping, so as to avoid the angle of the clamping plate 26 changing and causing the welding holes to be misaligned, and to prevent the situation where welding cannot be performed due to the misalignment of the welding holes.

[0070] Secondly, when it is necessary to support the middle part of the cross beam, starting the electric telescopic rod 44 can drive the adjustment plate 45 to rise. When the adjustment plate 45 rises, it will drive the second spline shaft 43 to rise. When the adjustment plate 45 rises, it will drive the first support plate 46 to rise. At this time, the first support plate 46 can support the cross beam. When the first support plate 46 supports the cross beam, the middle part of the cross beam can obtain additional support and can withstand greater pressure and gravity during welding, which can prevent the cross beam from bending due to gravity caused by too many welding support structures. At the same time, during welding, the shaking in the middle part of the cross beam can be reduced, thereby improving the welding quality.

[0071] When moving outward through the first platform 12, it drives the rack plate 121 to move. When the rack plate 121 moves, it can make the adjusting gear 41 rotate, and 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 cooperates with the adjusting hole and the first support plate 46 cannot rotate, when the adjusting block 431 rotates, it will make the first support plate 46 move upward. Thus, a stronger supporting force can be obtained when welding a longer cross beam, and the cross beam can be prevented from bending due to gravity.

[0072] Through the setting of the transmission groove and the transmission belt 421, the power of the first spline shaft 42 on one side of the second platform 13 can be transmitted to the first spline shaft 42 on one side of the first platform 12. Thus, the first spline shafts 42 can rotate synchronously. When the first spline shafts 42 rotate synchronously, the second spline shaft 43 and the adjusting block 431 can also rotate synchronously. Thus, the two first support plates 46 can rise synchronously, which can ensure uniform stress on both sides and can still support when welding a longer cross beam, and reduce the situation that the cross beam bends due to gravity.

[0073] When the first support plate 46 supports the cross beam, through the setting of the second spring 481 and the second support plate 48, the cross beam can be supported, and when supporting the cross beam, the supporting force is reduced by the compression of the second spring 481, and the support will not fail while reducing the supporting force through the second spring 481.

[0074] Finally, after welding is completed, the rotating fixture 15 will replace the fixed fixture 14 for clamping and rotate after the rotating fixture 15 clamps. At this time, clamping through the fixed fixture 14 can fix the rotated cross beam.

[0075] When the cross beam is flipped through the rotating fixture 15, the rotating shaft 261 will rotate in the sliding plate 25, so that the clamping plate 26 always clamps the workpiece. During the rotation process, the workpiece can be prevented from deviating due to gravity and other reasons. At the same time, clamping during rotation can prevent the workpiece from being stressed before the welding is completely cooled, and the situation of welding detachment can be avoided.

[0076] After welding is completed, by starting the vibration motor 31, the vibration motor 31 drives the eccentric disc 32 to rotate. When the eccentric disc 32 rotates, it will pull the first connecting rod 33 to perform a reciprocating motion and drive the second connecting rod 34 to perform a reciprocating motion. When the second connecting rod 34 reciprocates, it will slide in the limit through groove of the limit block 341. By limiting the second connecting rod 34, the second connecting rod 34 can be kept in a straight-line motion. When the second connecting rod 34 reciprocates, it will drive the vibration plate 35 to perform a reciprocating motion. Through the reciprocating motion of the vibration plate 35, the sliding plate 25 can be repeatedly impacted, and the vibration can be transmitted to the clamping plate 26 through the sliding plate 25. When the clamping plate 26 vibrates, the workpiece and the cross beam will vibrate. At this time, the welding stress at the welding joint can be released through vibration, thereby reducing the welding cracks caused by excessive welding stress, increasing the structural stability after welding, and enabling the welded structure to have a greater load-bearing capacity.

[0077] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A robot flexible welding workstation with AI vision guidance for a heavy truck crossbeam assembly, comprising a welding platform (1), a loading 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). Both the first platform (12) and the second platform (13) are slidably connected to the platform slide rail (11). Fixed jigs (14) are provided on the tops of both the first platform (12) and the second platform (13). Rotary jigs (15) are provided on the tops of both the first platform (12) and the second platform (13). It is characterized in that: On one side of the first platform (12) close to the second platform (13), a rack plate (121) is fixedly connected. On one side of the second platform (13) close to the first platform (12), a sliding groove is provided. The rack plate (121) is slidably connected to the sliding groove, and the rack plate (121) meshes with the support unit (4). On the top surfaces of both the first platform (12) and the second platform (13), sliding grooves are provided, and a clamping unit (2) is slidably connected in the sliding grooves. The clamping unit (2) includes a support column (21). An adjustment motor is provided in the sliding groove. The output end of the adjustment motor is fixedly connected to an adjustment screw rod (211), and the adjustment screw rod (211) is sleeved on the support column (21). The top of the support column (21) is fixedly connected to a fixing plate (22). A vibration unit (3) is fixedly connected to the top of the fixing plate (22). A plurality of adjustment grooves (221) are provided on the top of the fixing plate (22). A sliding plate (25) is slidably connected in the adjustment groove (221). On one side of the sliding plate (25) close to the welding platform (1), a rotating shaft (261) is rotatably connected. The end of the rotating shaft (261) away from the sliding plate (25) is fixedly connected to a clamping plate (26).

2. The robot flexible welding workstation with AI vision guidance for a heavy truck crossbeam assembly according to claim 1, wherein: On the top of the side of the fixing plate (22) away from the welding platform (1), a limiting plate (23) is fixedly connected. A limiting hole is provided in the middle of the limiting plate (23), and a limiting shaft (24) is slidably connected in the limiting hole. The end of the limiting shaft (24) close to 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).

3. The robot flexible welding workstation with AI vision guidance for a heavy truck crossbeam assembly according to claim 2, characterized in that: The vibration unit (3) includes a vibration motor (31). The output end of the vibration motor (31) is fixedly connected to an eccentric disc (32). On one side of the eccentric disc (32) away from the vibration motor (31), a first connecting rod (33) is hinged. On the end of the first connecting rod (33) away from the eccentric disc (32), a second connecting rod (34) is hinged. On the end of the second connecting rod (34) away from the first connecting rod (33), a vibration plate (35) is fixedly connected. A limiting block (341) is fixedly connected to the top of the fixing plate (22). A limiting through groove is provided on the surface of the limiting block (341), and the inner wall of the limiting through groove is slidably connected to the second connecting rod (34).

4. The flexible welding workstation for a heavy truck crossbeam assembly with AI vision guidance according to claim 1, wherein: On the top of the sides where the first platform (12) and the second platform (13) are close to each other, two rotation holes are provided, and a first spline shaft (42) is rotatably connected in the rotation holes; The support unit (4) includes two adjusting gears (41), the adjusting gears (41) are rotatably connected to the second platform (13), and the adjusting gears (41) are both meshed 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 in each first spline shaft (42), and an adjusting plate (45) is rotatably connected to the outer wall of the second spline shaft (43) near the top. The bottom of the side of the adjusting plate (45) away from the second spline shaft (43) is fixedly connected with an electric telescopic rod (44), and the tops of every two adjusting plates (45) are fixedly connected with a first support plate (46). In the middle of the bottom of the first support plate (46), a telescopic plate (47) and a telescopic block (471) are respectively fixedly connected, and the outer wall of the telescopic plate (47) is slidably connected with the telescopic block (471).

5. The robot flexible welding workstation with AI vision guidance for a heavy truck crossbeam assembly according to claim 4, characterized in that: The top of the second spline shaft (43) is fixedly connected with an adjusting block (431), and two adjusting holes are provided at the bottom of the first support plate (46), and the adjusting holes are sleeved with the adjusting block (431).

6. An AI vision-guided robotic flexible welding workstation for a heavy truck crossbeam assembly, characterized in that: Drive grooves are provided on the outer walls of the first spline shafts (42), and a drive belt (421) is connected in a driving manner between every two drive grooves; two adjusting units (5) are rotatably connected to the inner surface of the drive belt (421); The adjusting 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 adjusting rod (52) is slidably connected in the support groove, a third spring (53) is fixedly connected between the adjusting rod (52) and the support groove, and an adjusting wheel (54) is rotatably connected to the side of the adjusting rod (52) away from the fixed block (51), and the adjusting wheel (54) is rotatably connected to the drive belt (421).

7. An AI vision-guided robotic flexible welding workstation for a heavy truck crossbeam assembly according to claim 4, 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).

8. A robot flexible welding workstation with AI vision guidance for a heavy 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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