An intelligent welding system with weld seam recognition

Abstract

The present application relates to the technical field of intelligent welding, and particularly discloses an intelligent welding system with a weld seam identification function, which comprises a supporting plate, two groups of symmetrical welding bases and clamping bases are fixedly installed on the upper surface of the supporting plate, a movable mechanical arm is fixedly installed on the welding base, a welding head is movably connected to the end of the mechanical arm, a weld seam identification assembly is rotatably installed at the corresponding position of the end of the mechanical arm and the welding head, and a lifting seat is rotatably installed on the upper end surface of the clamping base. The assembling assembly and the positioning and clamping assembly arranged on the rotatable disc are used to assemble and combine the connecting plate and the energy absorption box, the assembling assembly and the positioning and clamping assembly arranged on the two groups of discs are synchronized, the welding efficiency of the connecting plate and the energy absorption box contained in the anti-collision beam is improved, the positioning and clamping assembly can ensure the installation position accuracy of the energy absorption box and the connecting plate during the assembly welding, and the yield rate during the assembly process of the anti-collision beam is improved.

Description

Technical Field

[0001] This invention relates to the field of intelligent welding technology, and in particular to an intelligent welding system with weld seam recognition function. Background Technology

[0002] A crash beam is a device used to absorb collision energy when a vehicle is involved in a collision. It consists of a main beam, an energy-absorbing box, and a connecting plate that connects to the vehicle. Both the main beam and the energy-absorbing box can effectively absorb collision energy when a vehicle is involved in a low-speed collision, minimizing the damage to the longitudinal beams of the vehicle body from the impact force. This is how it plays its role in protecting the vehicle.

[0003] Currently, the production process of automotive crash beams in the market requires welding between the main beam, energy-absorbing box, and connecting plate. There are two sets of energy-absorbing boxes and connecting plates, and the main beam is welded between these two sets of energy-absorbing boxes and connecting plates. In existing equipment, when welding the connecting plate, energy-absorbing box, and main beam, these three components need to be assembled first. After assembly, the connections between the main beam, energy-absorbing box, and connecting plate need to be pre-fixed by spot welding using a spot welding robot. After pre-fixation, the crash beam is initially formed, and then multiple sets of clamps are used to hold and rotate the crash beam. An external welding robot can weld the connection between the energy-absorbing box, the connecting plate, and the main beam. During this process, multiple sets of clamps are needed to fix the connecting plate, the energy-absorbing box, and the main beam. These clamps can obstruct the welding position during the welding process, thus affecting the welding efficiency and welding angle of the welding robot. At the same time, the welding robot requires a high degree of intelligence. After the welding is completed, the anti-collision beam needs to enter another production line to inspect its weld. The whole production process is quite complicated. Therefore, an intelligent welding system with weld recognition function is proposed. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an intelligent welding system with weld seam recognition function.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An intelligent welding system with weld seam recognition function includes a support plate. Two sets of symmetrically arranged welding bases and clamping bases are fixedly installed on both sides of the upper surface of the support plate. A movable robotic arm is fixedly installed on the welding base. A welding head is movably connected to the end of the robotic arm. A weld seam recognition component is rotatably installed at the end of the robotic arm corresponding to the welding head. A lifting seat is rotatably installed on the upper surface of the clamping base. A disc is fixedly installed on the lifting seat. A rotating column is rotatably installed at the center of the upper surface of the lifting seat. Four sets of assembly components are equidistantly arranged on the upper surface of the disc. A drive component that works with the assembly component is fixedly connected to the outer wall of the lifting seat at the corresponding position of the assembly component. A positioning clamping component is rotatably installed on the upper end of the rotating column. A steering component is fixedly connected to the upper end of the rotating column. A rotatable fixing component is provided on the steering component.

[0007] The positioning and clamping assembly includes a rotating ring rotatably connected to the rotating column. A first electric telescopic rod is fixedly installed on the outer wall of the rotating ring. A fixed block is fixedly installed on the telescopic end of the first electric telescopic rod. Both ends of the fixed block are rotatably connected to an opening rod. Rotatable clamping claws are connected to the bottom surfaces of the fixed block and the opening rod.

[0008] The fixing assembly includes a mounting box connected to the steering assembly. The outer wall of the mounting box has through slots that are equidistantly spaced. A circular rod is fixedly installed inside the through slot. Rotatable clamping rods are connected to the mounting box at positions corresponding to the through slots. The middle position of the clamping rod is rotatably connected to the circular rod. A contact block is slidably installed at the center of the outer wall of the mounting box. A return spring is fixedly connected to the outer wall of one end of the contact block inside the mounting box. The other end of the return spring is fixedly connected to the mounting box.

[0009] Preferably, the assembly includes two clamping plates slidably connected to the disc, and a force-bearing block is fixedly installed at one end of each clamping plate opposite to the other. The assembly also includes a centering block located between the two clamping plates. A lifting turntable is rotatably connected to the upper end of the centering block. Gas springs are provided on both sides of the centering block, with one end of the gas spring fixedly connected to the centering block and the other end fixedly connected to the clamping plate. A mating groove is provided on the upper end of the clamping plate, and a limit component is provided on the outer wall of the clamping plate.

[0010] Preferably, the limiting component includes a connecting block fixedly connected to the outer wall of the clamping plate, and rectangular grooves are provided on both sides of the connecting block. An adjusting plate is rotatably connected inside the rectangular groove, and a locking plate is rotatably connected to the other end of the adjusting plate.

[0011] Preferably, the drive assembly includes a hydraulic push rod fixedly connected to the outer wall of the lifting seat, and the telescopic end of the hydraulic push rod is fixedly connected to a pressing block that cooperates with the force-bearing block.

[0012] Preferably, the positioning and clamping assembly further includes a first mounting block fixedly installed on the outer wall of the fixed block, a rotating block rotatably connected to the bottom surface of the first mounting block, the outer wall of the rotating block contacting the outer wall of the clamping claw, and a second mounting block fixedly installed below the rotating block on the outer wall of the clamping claw, and a docking block for cooperating with the rotating block fixedly installed on the upper surface of the second mounting block.

[0013] Preferably, the weld recognition component includes a third electric telescopic rod that is rotatably connected to the robotic arm. A vision recognition device is fixedly installed at the telescopic end of the third electric telescopic rod, and a protective shell is slidably installed on the third electric telescopic rod.

[0014] Preferably, an auxiliary component is rotatably mounted at the end of the robotic arm corresponding to the welding head. The auxiliary component includes a rotating seat rotatably connected to the robotic arm, a storage rod fixedly connected to the rotating seat, and an adjustment disc rotatably mounted at the end of the storage rod away from the rotating seat. A grinding head, an smearing head, and an ultrasonic detector are fixedly connected to the outer wall of the adjustment disc at equal intervals. A dust collection box and a dust storage box are also fixedly mounted on the outer wall of the end of the storage rod, and the dust collection box and the dust storage box are internally connected.

[0015] Preferably, the steering assembly includes a lifting platform fixedly connected to the upper end face of the rotating column, a second electric telescopic rod fixedly installed at the upper end of the lifting platform, a fixed plate fixedly installed at the telescopic end of the second electric telescopic rod, a drive gear rotatably installed on the fixed plate, and a steering gear meshing with the drive gear rotatably installed on the fixed plate, wherein the steering gear is fixedly connected to the mounting box.

[0016] Preferably, two sets of extension blocks are fixedly installed on the bottom surface of the mounting box, and a fourth electric telescopic rod is slidably connected to the bottom surface of each set of extension blocks.

[0017] Preferably, one end of the contact block inside the mounting box is in contact with the end of the clamping rod, and the outer wall of the end of the contact block is provided with a movable groove corresponding to the position of the clamping rod. The end of the clamping rod slides inside the movable groove, and an adjusting rod is rotatably installed at the other end of the clamping rod, and a squeezing block is fixedly installed at the other end of the adjusting rod.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] This invention combines the connecting plate and the energy-absorbing box by setting assembly components and positioning clamping components on a rotatable disc. The assembly components and positioning clamping components on the two discs are operated synchronously, which improves the welding efficiency of the connecting plate and the energy-absorbing box contained in the anti-collision beam. The positioning clamping components can ensure the accurate installation position when the energy-absorbing box is combined and welded with the connecting plate, thereby improving the yield rate in the anti-collision beam assembly process.

[0020] This invention, by setting up a positioning and clamping component, facilitates the loading and assembly positioning of the energy-absorbing box, ensuring the accuracy of the welding position between the connecting plate and the energy-absorbing box. On the other hand, the clamping claws in the positioning and clamping component can rotate around the axis of the energy-absorbing box after clamping it. When the energy-absorbing box rotates, in cooperation with the lifting turntable, the energy-absorbing box and the connecting plate rotate synchronously, which facilitates the spot welding robot installed externally to perform spot welding pre-fixation on the periphery of the contact position between the energy-absorbing box and the connecting plate.

[0021] This invention, by setting up a fixing component, allows the contact block in the fixing component to simultaneously compress multiple clamping rods after being squeezed. These multiple clamping rods can then clamp the end of the main beam, and both ends of the main beam are clamped at multiple points. This ensures the stability of the main beam while reducing the number of clamps used, thus reducing the cost of welding the anti-collision beam. It also makes the welding position of the energy-absorbing box, connecting plate, and main beam connection more open during use, facilitating the adjustment of the welding head to the optimal welding angle. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the anti-collision beam being clamped and fixed in an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the front structure of the clamping base in an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the energy-absorbing box being clamped and fixed in an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the installation of the drive component structure in an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the robotic arm structure in an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the weld seam recognition component structure in an embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram of the auxiliary component structure in an embodiment of the present invention;

[0031] Figure 9As described in the embodiments of the present invention Figure 4 A magnified view of the structure at point A in the middle;

[0032] Figure 10 As described in the embodiments of the present invention Figure 5 A magnified schematic diagram of the structure at point B in the middle;

[0033] Figure 11 As described in the embodiments of the present invention Figure 10 A magnified schematic diagram of the structure at point C in the middle;

[0034] Figure 12 As described in the embodiments of the present invention Figure 7 A magnified schematic diagram of the structure at point D in the middle;

[0035] Figure 13 This is a schematic diagram of the steering component structure in an embodiment of the present invention;

[0036] Figure 14 This is a schematic diagram of the positioning and clamping component structure in an embodiment of the present invention;

[0037] Figure 15 This is a schematic cross-sectional view of the mounting box structure in an embodiment of the present invention;

[0038] Figure 16 As described in the embodiments of the present invention Figure 5 A magnified schematic diagram of the structure at point E in the middle;

[0039] Figure 17 This is a top view of the assembly component structure in an embodiment of the present invention.

[0040] In the diagram: 1. Support plate; 2. Welding base; 3. Clamping base; 4. Lifting seat; 5. Extension block; 6. Rotating column; 7. Positioning and clamping assembly; 701. First electric telescopic rod; 702. Fixing block; 703. Opening rod; 704. Clamping claw; 705. First mounting block; 706. Rotating block; 707. Connecting block; 708. Second mounting block; 8. Steering assembly; 801. Lifting platform; 802. Second electric telescopic rod; 803. Fixing plate; 804. Drive gear; 805. Steering gear; 9. Assembly assembly; 901. Clamping plate; 902. Force-bearing block; 903. Centering block; 904. Lifting turntable; 905. Gas spring; 906. Connecting groove; 10. Drive assembly; 1001. Hydraulic push rod; 1002. Extrusion block; 11. Limiting assembly; 1101. Connecting block; 1102. Adjusting plate; 1103. Locking plate; 12. Fourth electric telescopic rod; 13. Weld seam recognition component; 1301. Third electric telescopic rod; 1302. Vision recognizer; 1303. Protective shell; 14. Auxiliary component; 1401. Rotating seat; 1402. Storage rod; 1403. Adjusting disc; 1404. Grinding head; 1405. Spraying head; 1406. Dust collection box; 1407. Dust collection box; 1408. Ultrasonic detector; 15. Welding head; 16. Robotic arm; 17. Fixing component; 1701. Mounting box; 1702. Through groove; 1703. Circular rod; 1704. Clamping rod; 1705. Adjusting rod; 1706. Extrusion block; 1707. Contact block; 1708. Return spring; 1709. Movable groove. Detailed Implementation

[0041] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0042] Reference Figure 1-17A smart welding system with weld seam recognition function includes a support plate 1. Two sets of symmetrically arranged welding bases 2 and clamping bases 3 are fixedly installed on both sides of the upper surface of the support plate 1. A movable robotic arm 16 is fixedly installed on the welding base 2. A welding head 15 is movably connected to the end of the robotic arm 16. A weld seam recognition component 13 is rotatably installed at the end of the robotic arm 16 corresponding to the welding head 15. A lifting seat 4 is rotatably installed on the upper end surface of the clamping base 3. A disc is fixedly installed on the lifting seat 4. A rotating column 6 is rotatably installed at the center of the upper end surface of the lifting seat 4. The upper end of the rotating column 6 extends through the center of the disc to the top of the disc. Four sets of assembly components 9 are equidistantly arranged on the upper end surface of the disc. A drive component 10 for use with the assembly component 9 is fixedly connected to the outer wall of the lifting seat 4 at the corresponding position of the assembly component 9. A positioning clamping component 7 is rotatably installed on the upper end of the rotating column 6. A steering component 8 is fixedly connected to the upper end of the rotating column 6. A rotatable fixing component 17 is provided on the steering component 8.

[0043] The positioning and clamping assembly 7 includes a rotating ring rotatably connected to the rotating column 6. A first electric telescopic rod 701 is fixedly installed on the outer wall of the rotating ring. A fixing block 702 is fixedly installed on the telescopic end of the first electric telescopic rod 701. Both ends of the fixing block 702 are rotatably connected to the opening rod 703. The bottom surfaces of the fixing block 702 and the opening rod 703 are connected to rotatable clamping claws 704.

[0044] The fixing assembly 17 includes a mounting box 1701 connected to the steering assembly 8. The outer wall of the mounting box 1701 has through slots 1702 that are equidistantly opened. A circular rod 1703 is fixedly installed inside the through slot 1702. Rotatable clamping rods 1704 are connected to the mounting box 1701 at positions corresponding to the through slots 1702. The middle position of the clamping rod 1704 is rotatably connected to the circular rod 1703. A contact block 1707 is slidably installed at the center position of the outer wall of the mounting box 1701. A return spring 1708 is fixedly connected to the outer wall of one end of the contact block 1707 inside the mounting box 1701. The other end of the return spring 1708 is fixedly connected to the mounting box 1701.

[0045] The anti-collision beam is composed of two connecting plates, two energy-absorbing boxes, and a main beam. When the device is in use, a connecting plate feeding mechanism is installed at station one outside the clamping base 3; a material hopper for feeding the energy-absorbing boxes is installed at station two; a spot welding robot is installed outside station three; and at station four, the robotic arm 16, in conjunction with the welding head 15, can weld the materials at that station. The lifting seat 4 rotates, which moves the connecting plate clamped and fixed by the assembly component 9 at station one to station two. Then, the first electric telescopic rod 701 in the positioning clamping assembly 7 extends, and the controller (CPM1A)... Under the control of the PLC controller, the two opening rods 703 and the clamping claws 704 connected to the opening rods 703 are opened to clamp and feed the energy-absorbing box. Under the clamping action of the clamping claws 704, the fed energy-absorbing box is positioned and assembled with the connecting plate. After the energy-absorbing box and the connecting plate are assembled, the lifting seat 4 rotates to move the assembled connecting plate and energy-absorbing box to the third work station, where the spot welding robot pre-fixes them. When the pre-fixed connecting plate and energy-absorbing box move to the fourth work station, the fixing component 17 can clamp the two ends of the fed main beam. When the end of the main beam presses against the contact block 1707, the contact block 1707 simultaneously presses against the end of the clamping rod 1704, thereby causing the ends of multiple clamping rods 1704 to press and fix the end of the main beam. After fixing, the bottom surface of the main beam contacts the upper end of the energy-absorbing box, and then the welding head 15 set at the end of the robot arm 16 welds the connection.

[0046] As a technical optimization of the present invention, the assembly component 9 includes two clamping plates 901 that are slidably connected to the disc. Each clamping plate 901 has a force-bearing block 902 fixedly installed at one end opposite to the other. The assembly component 9 also includes a centering block 903 located between the two clamping plates 901. The upper end face of the centering block 903 is rotatably connected to a lifting turntable 904. Gas springs 905 are provided on both sides of the centering block 903. One end of the gas spring 905 is fixedly connected to the centering block 903, and the other end is fixedly connected to the clamping plate 901. The upper end face of the clamping plate 901 is provided with a docking groove 906, and the outer wall of the clamping plate 901 is provided with a limit component 11.

[0047] When the ends of both force blocks 902 are compressed, the gas spring 905 can cause the two clamping plates 901 to come together to clamp the object between the two clamping plates 901. The ends of the two force blocks 902 are wedge-shaped. When the wedge-shaped ends of the two force blocks 902 are compressed, the two force blocks 902 will drive the two clamping plates 901 to slide to both sides.

[0048] As a technical optimization of the present invention, the limiting component 11 includes a connecting block 1101 fixedly connected to the outer wall of the clamping plate 901. Rectangular grooves are provided on both sides of the connecting block 1101. An adjusting plate 1102 is rotatably connected inside the rectangular grooves. A locking plate 1103 is rotatably connected to the other end of the adjusting plate 1102.

[0049] When the connecting plate is arc-shaped or irregularly shaped, the connecting plate can be initially positioned by two clamping plates 901. Then, by adjusting the rotation of the adjusting plate 1102 and the locking plate 1103, the end of the locking plate 1103 can be made to abut against the outer wall of the arc-shaped or irregularly shaped connecting plate. By having the ends of the four sets of locking plates 1103 abut against the four points of the arc-shaped or irregularly shaped connecting plate, the arc-shaped or irregularly shaped connecting plate can be limited and fixed, making the device more widely applicable.

[0050] As a technical optimization of the present invention, the drive assembly 10 includes a hydraulic push rod 1001 fixedly connected to the outer wall of the lifting seat 4, and the telescopic end of the hydraulic push rod 1001 is fixedly connected to a pressing block 1002 that cooperates with the force-bearing block 902.

[0051] There are two sets of hydraulic push rods 1001, which correspond to the positions of the two force blocks 902 respectively. When the extensible end of the hydraulic push rod 1001 is fixedly installed with the extrusion block 1002, it can be used to extrude the end of the wedge-shaped force block 902 when it is lifted upward. After the end of the two force blocks 902 is extruded, the two clamping plates 901 can move to both sides respectively, thereby controlling the two clamping plates 901 to clamp or release the outer wall of the connecting plate. The opening and closing of the clamping plates 901 is controlled by the drive assembly 10, which can be used in conjunction with the positioning clamping assembly 7 and the fixing assembly 17 when welding the anti-collision beam.

[0052] As a technical optimization of the present invention, the positioning and clamping assembly 7 further includes a first mounting block 705 fixedly mounted on the outer wall of the fixing block 702, a rotating block 706 rotatably connected to the bottom surface of the first mounting block 705, the outer wall of the rotating block 706 contacting the outer wall of the clamping claw 704, and a second mounting block 708 fixedly mounted on the outer wall of the clamping claw 704 below the rotating block 706, and a docking block 707 cooperating with the rotating block 706 fixedly mounted on the upper end surface of the second mounting block 708;

[0053] The rotating block 706 drives the gripper 704 to rotate. The upper surface of the gripper 704 is slidably connected to the bottom surface of the fixed block 702 and the opening rod 703. The rotating block 706 drives the gripper 704 to rotate synchronously with the energy-absorbing box. After the energy-absorbing box and the connecting plate rotate synchronously for one revolution, the spot welding robot located outside the device can perform electric welding on the periphery of the connection between the energy-absorbing box and the connecting plate to pre-fix the energy-absorbing box and the connecting plate. After the gripper 704 rotates one revolution with the energy-absorbing box and the connecting plate, the docking block 707 on the gripper 704 re-docks with the rotating block 706. After the contact sensors located on the upper surfaces of the two rotating blocks 706 receive the signal, the two opening rods 703 drive the gripper 704 to open. At the same time, the first electric telescopic rod 701 retracts, causing the gripper 704 to separate from the outer wall of the energy-absorbing box.

[0054] As a technical optimization of the present invention, the weld seam recognition component 13 includes a third electric telescopic rod 1301 rotatably connected to the robotic arm 16. A visual recognition device 1302 is fixedly installed at the telescopic end of the third electric telescopic rod 1301, and a protective shell 1303 is slidably installed on the third electric telescopic rod 1301.

[0055] After the welding of the connecting plate and the energy-absorbing box is completed, or the welding of the energy-absorbing box and the main beam is completed, the weld seam needs to be identified and inspected. During the inspection, the third electric telescopic rod 1301 can be rotated or extended for adjustment. After adjustment, the third electric telescopic rod 1301 can move the vision recognition device 1302 to the corresponding position of the weld seam for fixed-point visual recognition inspection. After the inspection is completed, the vision recognition device 1302 returns to the initial position, and the protective shell 1303 slidably connected to the third electric telescopic rod 1301 slides down and is fitted onto the outside of the vision recognition device 1302, which can protect the vision recognition device 1302.

[0056] As a technical optimization of the present invention, an auxiliary component 14 is rotatably installed at the end of the robotic arm 16 corresponding to the welding head 15. The auxiliary component 14 includes a rotating seat 1401 rotatably connected to the robotic arm 16. A storage rod 1402 is fixedly connected to the rotating seat 1401. An adjustment disk 1403 is rotatably installed at the end of the storage rod 1402 away from the rotating seat 1401. A polishing head 1404, a coating head 1405 and an ultrasonic detector 1408 are fixedly connected to the outer wall of the adjustment disk 1403. A dust collection box 1407 and a dust storage box 1406 are also fixedly installed on the outer wall of the end of the storage rod 1402. The dust collection box 1407 and the dust storage box 1406 are internally connected.

[0057] When not in use, the storage rod 1402 is stored upwards outside the end of the robotic arm 16 to avoid affecting the normal use of the welding head 15. When in use, the rotating seat 1401 rotates, causing the storage rod 1402 to move downwards. The adjusting plate 1403 at the end of the storage rod 1402 then rotates. The grinding head 1404 located on the adjusting plate 1403 can grind the weld. The welding slag removed by grinding is sucked up and collected inside the dust collection box 1407. Then, the adjusting plate 1403 rotates, and the coating head 1405 can apply anti-rust paint to the ground weld. Finally, the weld is inspected by the probe on the ultrasonic detector 1408. After the inspection is completed, the anti-collision beam meets the factory standard.

[0058] As a technical optimization of the present invention, the steering assembly 8 includes a lifting platform 801 fixedly connected to the upper end face of the rotating column 6. A second electric telescopic rod 802 is fixedly installed on the upper end of the lifting platform 801. A fixing plate 803 is fixedly installed on the telescopic end of the second electric telescopic rod 802. A drive gear 804 is rotatably installed on the fixing plate 803, and a steering gear 805 that meshes with the drive gear 804 is also rotatably installed on the fixing plate 803. The steering gear 805 is fixedly connected to the mounting box 1701.

[0059] When in use, the lifting platform 801 can be raised and lowered to be used with energy-absorbing boxes of different heights. The lifting platform 801 can be raised and lowered to adjust the clamping position of the fixing component 17 on the end of the main beam. The second electric telescopic rod 802 can be extended and retracted to clamp the end of the main beam with the fixing component 17. After the main beam and the energy-absorbing box are positioned and combined, the driving gear 804 drives the steering gear 805 to rotate the fixing component 17, which can make the connection between the main beam and the energy-absorbing box flip upward, so that the welding head 15 set at the end of the robotic arm 16 can weld the connection between the main beam and the energy-absorbing box.

[0060] As a technical optimization of the present invention, two sets of extension blocks 5 are fixedly installed on the bottom surface of the mounting box 1701. The bottom surfaces of the two sets of extension blocks 5 are slidably connected to a fourth electric telescopic rod 12, and the fourth electric telescopic rod 12 is used in conjunction with the docking groove 906. The fourth electric telescopic rod 12 provided at the bottom of the two sets of extension blocks 5 can be stored at the bottom of the extension block 5, or it can move outward and extend into the interior of the docking groove 906. When the end of the fourth electric telescopic rod 12 extends into the docking groove 906, the fourth electric telescopic rod 12 can clamp and fix the main beam, energy absorption box and connecting plate with the fixing component 17. The fixed end of the main beam, energy absorption box and connecting plate can be rotated together with the mounting box 1701 so that the bottom surface of the main beam is facing upward, thereby facilitating the welding head 15 provided at the end of the robotic arm 16 to weld the connection between the energy absorption box and the bottom surface of the main beam.

[0061] As a technical optimization of the present invention, one end of the contact block 1707 located inside the mounting box 1701 is in contact with the end of the clamping rod 1704, and the outer wall of the end of the contact block 1707 is provided with a movable groove 1709 corresponding to the position of the clamping rod 1704. The end of the clamping rod 1704 slides inside the movable groove 1709, and an adjusting rod 1705 is rotatably installed at the other end of the clamping rod 1704. A clamping block 1706 is fixedly installed at the other end of the adjusting rod 1705.

[0062] The adjustable rod 1705 can be used to extend the length of the clamping rod 1704, so that the fixing assembly 17 can be used to clamp a wider range of main beam sizes. The clamping block 1706 located at the end of the adjustable rod 1705 is elastically set, which can increase the friction between the end of the adjustable rod 1705 and the outer wall of the main beam on the one hand, and prevent the clamping force of the adjustable rod 1705 on the outer wall of the main beam from being too large, which could damage the end of the main beam.

[0063] In use, this invention allows for the assembly and welding of the main beam, energy-absorbing box, and connecting plate within the anti-collision beam. An external robotic arm at one workstation loads the connecting plate into the assembly component 9. A hydraulic push rod 1001 pushes the pressing blocks 1002 upwards, causing the two clamping plates 901 to slide to the sides under the pressure of the two pressing blocks 1002. The robotic arm places the connecting plate between the two open clamping plates 901. After the hydraulic push rod 1001 moves downwards, the gas spring 905 allows the two clamping plates to... Plate 901 clamps the connecting plate, and two sets of limiting components 11 are provided on the two clamping plates 901. Under the action of the limiting components 11, when the connecting plate is rectangular, elliptical or other irregular shape, the two adjusting plates 1102 and locking plates 1103 contained in the two sets of limiting components 11 can be adjusted according to the actual situation. After adjustment, the end of the locking plate 1103 can squeeze and fix the four contact points on the outer wall of the connecting plate. Then, the assembly component 9 and the limiting components 11 can limit the connecting plate of various shapes.

[0064] Next, the lifting seat 4 rotates as a whole, causing the assembly 9 holding the connecting plate and the energy-absorbing box to rotate to the second workstation. The first electric telescopic rod 701 in the positioning clamping assembly 7 extends to clamp the energy-absorbing box in the hopper above the connecting plate. The two opening rods 703 in the positioning clamping assembly 7 are equipped with signal transmitters on their outer walls, and a signal receiver is located at the center of the upper end face of the clamping plate 901. With the cooperation of the opening rods 703 and the signal transmitters and receivers on the clamping plate 901, the two clamping claws 704 clamp the energy-absorbing box and then retract, positioning the energy-absorbing box for assembly. Mounted on the connecting plate, the lifting seat 4 and the positioning clamping assembly 7 are simultaneously rotated 90 degrees, causing the connecting plate and the energy-absorbing box to rotate synchronously to station three. A spot welding robot is installed at station three, which can perform preliminary welding and fixing at the connection between the connecting plate and the energy-absorbing box. When the spot welding robot is working, the rotating block 706, which is rotatably mounted on the bottom surface of the first mounting block 705, rotates. When the rotating block 706 rotates, its outer wall contacts the outer wall of the clamping claw 704. Under the mutual force between the rotating block 706 and the outer wall of the clamping claw 704, the clamping claw 704 rotates, thus clamping... The energy-absorbing box, which is clamped and fixed inside the gripper 704, can rotate synchronously. At this time, the telescopic end of the hydraulic push rod 1001 extends, causing the two clamping plates 901 to separate from the outer wall of the connecting plate. The lifting turntable 904 on the central block 903 is raised and rotated. In cooperation with the gripper 704, the connecting plate and the assembled energy-absorbing box can rotate together. The spot welding robot can then perform pre-fixation welding on the periphery of the connection between the connecting plate and the energy-absorbing box. When the gripper 704 rotates one revolution and returns to its initial position, the mating block 707 and the rotating block 707 on the gripper 704... When the bottom surface of 6 contacts, the two opening rods 703 drive the two clamping claws 704 to open to both sides. At the same time, the first electric telescopic rod 701 retracts, and the rotating ring fixedly connected to the first electric telescopic rod 701 rotates 90 degrees to the work position to re-clamp the energy-absorbing box for feeding. After the pre-fixed connecting plate and energy-absorbing box are re-clamped and fixed by the two clamping plates 901, they move to the four positions of the work position with the further rotation of the lifting seat 4. At this time, the robotic arm 16 corresponding to the clamping base 3 moves, and the welding head 15 at the end of the robotic arm 16 can weld the connection between the connecting plate and the energy-absorbing box.

[0065] During this process, the relevant components on the two sets of clamping bases 3 simultaneously assemble the connecting plate and the energy-absorbing box. When both sets of connecting plates and energy-absorbing boxes rotate to the four positions of the workstation, the welding heads 15 located at the ends of the two sets of robotic arms 16 weld the connecting plates and energy-absorbing boxes. Then, the external robotic arm loads the main beam above the two energy-absorbing boxes, with the two energy-absorbing boxes contacting the two ends of the main beam respectively. When the main beam moves between the two sets of fixing components 17 under the clamping of the external robotic arm, the two ends of the main beam can be clamped and fixed by the two sets of fixing components 17. When the two ends of the main beam contact the contact block 170... When contact occurs, the telescopic end of the second electric telescopic rod 802 extends, causing the contact block 1707 to press against the end of the main beam. When the contact block 1707 is pressed into the mounting box 1701, the end of the contact block 1707 simultaneously presses against the ends of the four clamping rods 1704. The clamping rods 1704 rotate around the circular rod 1703 as the axis. The adjusting rod 1705 at the end of the clamping rod 1704 can be adjusted synchronously to squeeze the outer wall of the end of the main beam. Under the pressing action of the two sets of fixing components 17 at both ends of the main beam, the main beam can be limited and fixed, and the main beam can be made to contact the upper end of the energy-absorbing box.

[0066] Finally, the fourth electric telescopic rod 12, located at the bottom of the two sets of extension blocks 5 below the mounting box 1701, extends outward. After the end of the fourth electric telescopic rod 12 extends into the docking groove 906, the connecting plate and the energy-absorbing box are located between the main beam and the fourth electric telescopic rod 12. When the lifting platform 801 is raised, the drive gear 804 rotates and drives the steering gear 805 to rotate synchronously. The fixed component 17, which is fixedly connected to the steering gear 805, can drive the two ends of the main beam to rotate synchronously. At this time, the bottom surface of the main beam that contacts the energy-absorbing box is flipped upward. The welding head 15 at the end of the robotic arm 16 can weld the contact position of the energy-absorbing box with the main beam. After the energy-absorbing box and the main beam are welded, the anti-collision beam is formed as a whole.

[0067] After the welding head 15 at the end of the robotic arm 16 completes the welding process between the connecting plate and the energy-absorbing box, or between the end of the energy-absorbing box and the main beam, the weld seam recognition component 13 rotatably mounted on the robotic arm 16 can identify the weld seam. The third electric telescopic rod 1301 included in the weld seam recognition component 13 can rotate or extend. The vision recognition device 1302 rotatably mounted at the lower end of the third electric telescopic rod 1301 can perform fixed-point recognition of the weld seam at the connection between the energy-absorbing box and the connecting plate, or between the energy-absorbing box and the main beam, driven by the robotic arm 16. After the vision recognition device 1302 is used, the third electric telescopic rod 1301 retracts to its initial position, and the protective shell 1303, which is slidably connected to the third electric telescopic rod 1301, slides downwards and is fitted onto the... The external structure of the visual recognition device 1302 can protect the unused visual recognition device 1302. After the weld seam is intelligently detected and recognized by the visual recognition device 1302, it can be processed by the auxiliary component 14. After the rotating seat 1401 is rotated, the adjustment plate 1403 set at the other end of the storage rod 1402 can be lowered. Then, the grinding head 1404, the coating head 1405 and the ultrasonic detector 1408 set on the outer wall of the adjustment plate 1403 can grind and prevent rust on the weld seam in sequence. After the processing is completed, the ultrasonic detector 1408 can detect cracks in the weld seam. After the weld seam of the anti-collision beam has been processed and inspected, the robot arm that loads the main beam can remove the formed anti-collision beam.

[0068] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

[0069] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An intelligent welding system with weld seam recognition function, comprising a support plate (1), characterized in that... Two sets of symmetrically arranged welding bases (2) and clamping bases (3) are fixedly installed on both sides of the upper surface of the support plate (1). A movable robotic arm (16) is fixedly installed on the welding base (2). A welding head (15) is movably connected to the end of the robotic arm (16). A weld seam recognition component (13) is rotatably installed at the end of the robotic arm (16) corresponding to the welding head (15). A lifting seat (4) is rotatably installed on the upper surface of the clamping base (3). A circular... A rotating column (6) is rotatably installed at the center of the upper end face of the disc and the lifting seat (4). Four sets of assembly components (9) are equidistantly arranged on the upper end face of the disc. The outer wall of the lifting seat (4) and the corresponding positions of the assembly components (9) are fixedly connected to drive components (10) that cooperate with the assembly components (9). A positioning clamping component (7) is rotatably installed on the upper end of the rotating column (6). A steering component (8) is fixedly connected to the upper end of the rotating column (6). A rotatable fixing component (17) is provided on the steering component (8). The positioning clamping assembly (7) includes a rotating ring rotatably connected to the rotating column (6). A first electric telescopic rod (701) is fixedly installed on the outer wall of the rotating ring. A fixing block (702) is fixedly installed on the telescopic end of the first electric telescopic rod (701). Both ends of the fixing block (702) are rotatably connected to the opening rod (703). Rotatable clamping claws (704) are connected to the bottom surfaces of the fixing block (702) and the opening rod (703). The fixing component (17) includes a mounting box (1701) connected to the steering component (8). The outer wall of the mounting box (1701) is provided with through slots (1702) at equal intervals. A circular rod (1703) is fixedly installed inside the through slot (1702). Rotatable clamping rods (1704) are connected to the mounting box (1701) at positions corresponding to the through slots (1702). The middle position of the clamping rod (1704) is rotatably connected to the circular rod (1703). A contact block (1707) is slidably installed at the center position of the outer wall of the mounting box (1701). A return spring (1708) is fixedly connected to the outer wall of one end of the contact block (1707) inside the mounting box (1701). The other end of the return spring (1708) is fixedly connected to the mounting box (1701). The assembly component (9) includes two clamping plates (901) that are slidably connected to the disc. Each clamping plate (901) has a force-bearing block (902) fixedly installed at one end opposite to the other. The assembly component (9) also includes a centering block (903) located between the two clamping plates (901). The upper end face of the centering block (903) is rotatably connected to a lifting turntable (904). Gas springs (905) are provided on both sides of the centering block (903). One end of the gas spring (905) is fixedly connected to the centering block (903), and the other end is fixedly connected to the clamping plate (901). The upper end face of the clamping plate (901) is provided with a docking groove (906), and the outer wall of the clamping plate (901) is provided with a limit component (11). The drive assembly (10) includes a hydraulic push rod (1001) fixedly connected to the outer wall of the lifting seat (4), and the telescopic end of the hydraulic push rod (1001) is fixedly connected to a pressing block (1002) that cooperates with the force block (902).

2. The intelligent welding system with weld seam recognition function according to claim 1, characterized in that, The limiting component (11) includes a connecting block (1101) fixedly connected to the outer wall of the clamping plate (901). Rectangular grooves are provided on both sides of the connecting block (1101). An adjusting plate (1102) is rotatably connected inside the rectangular groove. A locking plate (1103) is rotatably connected to the other end of the adjusting plate (1102).

3. The intelligent welding system with weld seam recognition function according to claim 2, characterized in that, The positioning and clamping assembly (7) further includes a first mounting block (705) fixedly mounted on the outer wall of the fixed block (702). A rotating block (706) is rotatably connected to the bottom surface of the first mounting block (705). The outer wall of the rotating block (706) contacts the outer wall of the clamping claw (704). A second mounting block (708) is fixedly mounted below the rotating block (706) on the outer wall of the clamping claw (704). A docking block (707) that cooperates with the rotating block (706) is fixedly mounted on the upper end surface of the second mounting block (708).

4. The intelligent welding system with weld seam recognition function according to claim 3, characterized in that, The weld seam recognition component (13) includes a third electric telescopic rod (1301) rotatably connected to the robotic arm (16). A visual recognition device (1302) is fixedly installed at the telescopic end of the third electric telescopic rod (1301), and a protective shell (1303) is slidably installed on the third electric telescopic rod (1301).

5. The intelligent welding system with weld seam recognition function according to claim 4, characterized in that, An auxiliary component (14) is rotatably mounted at the end of the robotic arm (16) corresponding to the welding head (15). The auxiliary component (14) includes a rotating seat (1401) rotatably connected to the robotic arm (16). A storage rod (1402) is fixedly connected to the rotating seat (1401). An adjustment plate (1403) is rotatably mounted at the end of the storage rod (1402) away from the rotating seat (1401). An equally spaced grinding head (1404), a smearing head (1405), and an ultrasonic detector (1408) are fixedly connected to the outer wall of the adjustment plate (1403). A dust collection box (1407) and a dust storage box (1406) are also fixedly mounted on the outer wall of the end of the storage rod (1402). The dust collection box (1407) and the dust storage box (1406) are internally connected.

6. The intelligent welding system with weld seam recognition function according to claim 5, characterized in that, The steering assembly (8) includes a lifting platform (801) fixedly connected to the upper end face of the rotating column (6). A second electric telescopic rod (802) is fixedly installed on the upper end of the lifting platform (801). A fixing plate (803) is fixedly installed on the telescopic end of the second electric telescopic rod (802). A drive gear (804) is rotatably installed on the fixing plate (803). A steering gear (805) meshing with the drive gear (804) is also rotatably installed on the fixing plate (803). The steering gear (805) is fixedly connected to the mounting box (1701).

7. The intelligent welding system with weld seam recognition function according to claim 6, characterized in that, The bottom surface of the mounting box (1701) is fixedly equipped with two sets of extension blocks (5), and the bottom surfaces of the two sets of extension blocks (5) are slidably connected with a fourth electric telescopic rod (12).

8. The intelligent welding system with weld seam recognition function according to claim 7, characterized in that, The contact block (1707) is located inside the mounting box (1701) at one end, which is in contact with the end of the clamping rod (1704). The outer wall of the end of the contact block (1707) is provided with a movable groove (1709) at the corresponding position of the clamping rod (1704). The end of the clamping rod (1704) slides inside the movable groove (1709). An adjusting rod (1705) is rotatably installed at the other end of the clamping rod (1704). A clamping block (1706) is fixedly installed at the other end of the adjusting rod (1705).

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