A laser cutting and welding integrated device for steel structure processing

Abstract

The present application relates to the technical field of steel structure intelligent manufacturing and laser processing, in particular to a laser cutting and welding integrated device for steel structure processing, which comprises a laser cutting conveying table and a laser cutting mechanism arranged at the top end of the laser cutting conveying table. The device constructs a full-process automation closed-loop system for the laser cutting blanking, automatic accurate assembly and double-sided continuous welding forming of steel structure corbels, deeply meets the upgrading requirements of intelligent manufacturing equipment industry for the intelligentization and unmannedization of steel structure processing, provides a core technical scheme of unified cutting process and subsequent welding process benchmark for the metal cutting equipment manufacturing field, also promotes the technical innovation of welding equipment manufacturing field from single welding function to full-process collaborative operation, completely solves the industry pain points of low efficiency, poor precision and process disconnection of manual assembly, improves the production efficiency compared with traditional equipment, and perfectly adapts to the stable processing needs of standardized and batched fabricated building steel structures.

Description

Technical Field

[0001] This invention relates to the field of intelligent manufacturing and laser processing technology for steel structures, specifically to an integrated laser cutting and welding device for steel structure processing. Background Technology

[0002] With the rapid development of the prefabricated building industry, steel structures, with their core advantages of light weight, excellent seismic performance, and high assembly efficiency, have become the mainstream structural form for industrial and civil buildings. Steel structure brackets, also known as steel structure beam supports, are the core force-transmitting components connecting beams and columns in steel structures. They are key components determining the assembly accuracy and structural safety of buildings. Their core forming logic involves the precise assembly of multiple structural steel plates after cutting and beveling, followed by welding to form an integral load-bearing component. Currently, laser processing technology has become the mainstream process for processing steel structure components. The upgrading and iteration of related technologies deeply align with the development direction of the intelligent manufacturing equipment industry, simultaneously driving technological innovation in the fields of metal cutting equipment manufacturing and welding equipment manufacturing. Existing technologies have gradually achieved equipment integration of laser cutting and welding processes, providing fundamental technical support for the large-scale and efficient processing of steel structure brackets.

[0003] Existing laser cutting and welding equipment for steel structure bracket processing still suffers from many long-standing industry pain points and cannot meet the high-efficiency production needs of the prefabricated building industry. Current equipment only achieves simple physical assembly of cutting and welding actuators, failing to establish a closed-loop linkage system for the entire process of cutting, assembly, and welding. Cut plates require manual transfer and manual marking for assembly, making automated and precise assembly impossible. This not only results in high labor intensity and low production efficiency but also easily leads to assembly deviations, directly disrupting the preset welding process benchmarks and causing uncontrollable weld quality. Furthermore, existing equipment cannot adapt to processing brackets of different specifications and with different flange inclination angles, exhibiting extremely poor flexibility. After welding, workpiece flipping requires manual assistance, easily causing weld damage and benchmark misalignment, failing to meet the standardized, batch-production, and stable processing requirements of steel structure components. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated laser cutting and welding device for steel structure processing, which solves the problem mentioned in the background art that the existing laser cutting and welding devices only realize the simple physical splicing of cutting and welding execution mechanisms, without establishing a closed-loop linkage system for the entire process of cutting, splicing, and welding. The cut plates need to be manually transferred and manually marked for alignment to complete the splicing, which cannot achieve automated and precise assembly. This not only results in high labor intensity and low production efficiency, but also easily leads to splicing deviations, directly destroying the preset welding process benchmarks, resulting in uncontrollable weld formation quality and failing to meet the stable processing requirements of standardized and mass production of steel structure components.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an integrated laser cutting and welding device for steel structure processing, comprising a laser cutting conveyor table, a laser cutting mechanism disposed at the top of the laser cutting conveyor table, and a laser welding table adjacent to one side of the laser cutting conveyor table. A displacement mechanism is fixed at the top of the laser cutting conveyor table, and the sliding seat of the displacement mechanism is fixedly connected to the laser cutting mechanism. A support frame is fixed at the bottom of the laser welding table. A first robotic arm and a second robotic arm are respectively disposed on both sides of the laser welding table. A fixed seat is fixed at the bottom of both the first robotic arm and the second robotic arm. A magnetic material suction mechanism is connected to the execution end of the first robotic arm, and a laser welding mechanism is connected to the execution end of the second robotic arm. A mounting hole is opened through the middle of the laser welding table, and a beam support welding assembly is disposed inside the mounting hole. The beam support welding assembly includes a first positioning plate and a second positioning plate, which are symmetrically disposed inside the mounting hole. An tilt adjustment assembly is disposed at the bottom of the second positioning plate.

[0006] Furthermore, the mounting holes are located on the inner walls on both sides between the first positioning plate and the second positioning plate, and the first support plate and the second support plate are fixedly installed respectively. The top of the first positioning plate and the second positioning plate are both provided with inwardly extending positioning grooves.

[0007] Furthermore, a stiffening plate bracket is fixedly installed through one end face of the first positioning plate near the second positioning plate, and a through hole corresponding to the position of the stiffening plate bracket is opened through one end face of the second positioning plate near the stiffening plate bracket.

[0008] Furthermore, a first limiting block is symmetrically fixed on both sides of the bottom end of the first positioning plate, and a second limiting block is symmetrically fixed on both sides of the bottom end of the second positioning plate. An auxiliary rod is slidably installed between one of the first limiting blocks at the bottom end of the first positioning plate and one of the second limiting blocks at the bottom end of the second positioning plate. The two ends of the auxiliary rod are fixedly connected to the laser welding station by a fixing frame.

[0009] Furthermore, a bidirectional threaded rod is threaded through and installed between another first limiting block at the bottom end of the first positioning plate and another second limiting block at the bottom end of the second positioning plate. A rotating frame is installed through both ends of the bidirectional threaded rod, and the bidirectional threaded rod is rotatably engaged with the rotating frame.

[0010] Furthermore, one end of each rotating frame is fixedly installed on the outer wall of the laser welding station, and a stepper motor is fixedly installed on one side of one of the rotating frames. The output end of the stepper motor is coaxially and fixedly connected to one end of the bidirectional threaded rod.

[0011] Furthermore, a cylinder is vertically fixed at the bottom center of both the first positioning plate and the second positioning plate. The piston rod of the cylinder passes through the bottom of the positioning groove and extends into the interior of the positioning groove. A lifting plate is fixedly installed at the top of the piston rod of the cylinder, and the lifting plate slides in contact with the inner wall of the positioning groove.

[0012] Furthermore, two guide rods are symmetrically and vertically arranged on both sides of the cylinder. The top of the guide rods penetrates the bottom of the positioning groove and extends into the groove, and is fixedly connected to the bottom of the lifting plate.

[0013] Furthermore, the tilt adjustment assembly includes two limiting sleeves, which are respectively positioned above the top of the two second limiting blocks. A fixing post is fixedly installed at the center of the top of each limiting sleeve, and the top of the fixing post is fixedly installed at the bottom of the second positioning plate. A rotating cavity is opened inside the bottom of each limiting sleeve, and a rotating disk is rotatably installed inside the rotating cavity. Several positioning and abutting grooves are opened circumferentially on the edge of the rotating disk. A connecting post is fixedly installed at the center of the bottom of the rotating disk, and the bottom of the connecting post is fixedly installed at the top of the corresponding second limiting block.

[0014] Furthermore, a positioning bolt is threaded through one side wall of each limiting sleeve. One end of the positioning bolt abuts in one of the positioning abutment grooves on the corresponding side, and an auxiliary handle is fixedly installed on the other end of the positioning bolt.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This device constructs a fully automated closed-loop system for steel structure brackets, from laser cutting and precise automated assembly to double-sided continuous welding. It deeply aligns with the intelligent manufacturing equipment industry's upgrade requirements for intelligent and unmanned steel structure processing. It provides a core technical solution for the metal cutting equipment manufacturing field to unify the benchmarks of cutting and subsequent welding processes. It also promotes the technological innovation of the welding equipment manufacturing field from single welding function to full-process collaborative operation. This solution completely solves the industry pain points of low efficiency, poor accuracy, and disconnected processes in manual assembly. It improves production efficiency compared to traditional equipment and perfectly adapts to the standardized and batch stable processing needs of prefabricated building steel structures.

[0017] 2. This device, through the setting of the tilt adjustment component, breaks through the technical limitation of existing processing equipment that can only adapt to straight wing plate brackets with uniform cross-section. It realizes flexible and precise processing of wedge brackets with different tilt angles and variable cross-sections. It deeply meets the core needs of the intelligent manufacturing equipment industry for flexible production of multi-variety, small-batch customized components, expands the processing and adaptation range of irregular steel structure components in the field of metal cutting equipment manufacturing, and fills the technical gap in precise positioning and welding of variable cross-section brackets in the field of welding equipment manufacturing. This solution does not require the replacement of special tooling, shortens the product changeover cycle, and perfectly adapts to the processing needs of customized brackets for prefabricated buildings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the laser welding mechanism and laser welding table of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the first support plate and the second support plate of the present invention;

[0021] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0022] Figure 5 This is a three-dimensional structural diagram of the first positioning plate and the second positioning plate of the present invention;

[0023] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point B;

[0024] Figure 7 A schematic diagram demonstrating the splicing of steel structure bracket plates;

[0025] Figure 8 This is a partial cross-sectional three-dimensional structural schematic diagram of the cylinder and lifting plate of the present invention;

[0026] Figure 9 For the present invention Figure 5 Enlarged structural diagram at point C;

[0027] Figure 10 This is a partial cross-sectional three-dimensional structural diagram of the limiting sleeve and rotating disk of the present invention;

[0028] Figure 11 This is a schematic diagram demonstrating how the second limiting block can be pushed to change the tilt angle of the second positioning plate according to the present invention.

[0029] In the attached diagram, the components represented by each number are as follows: 1. Laser cutting conveyor table; 2. Displacement mechanism; 3. Laser cutting mechanism; 4. First robotic arm; 5. Magnetic material suction mechanism; 6. Second robotic arm; 7. Laser welding mechanism; 8. Laser welding table; 9. Mounting hole; 10. First positioning plate; 11. Second positioning plate; 12. Positioning groove; 13. Stiffening plate bracket; 14. Through hole; 15. First support plate; 16. Second support plate; 17. Auxiliary rod; 18. First limit block; 19. Second limit block; 20. Bidirectional threaded rod; 21. Rotating frame; 22. Stepper motor; 23. Fixed frame; 24. Cylinder; 25. Lifting plate; 26. Guide rod; 27. Fixed column; 28. Limit sleeve; 29. ​​Rotating disk; 30. Connecting column; 31. Positioning bolt; 32. Auxiliary handle; 33. Positioning contact groove; 34. Fixed seat; 35. Support frame. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1: Please refer to Figure 1 - Figure 8 A laser cutting and welding integrated device for steel structure processing includes a laser cutting conveyor table 1, a laser cutting mechanism 3 disposed at the top of the laser cutting conveyor table 1, and a laser welding table 8 adjacent to one side of the laser cutting conveyor table 1. A displacement mechanism 2 is fixed at the top of the laser cutting conveyor table 1, and the sliding seat of the displacement mechanism 2 is fixedly connected to the laser cutting mechanism 3. A support frame 35 is fixed at the bottom of the laser welding table 8. A first robotic arm 4 and a second robotic arm 6 are respectively disposed on both sides of the laser welding table 8. A fixing seat 34 is fixed at the bottom of both the first robotic arm 4 and the second robotic arm 6. A magnetic material suction mechanism 5 is connected to the execution end of the first robotic arm 4, and a laser welding mechanism 7 is connected to the execution end of the second robotic arm 6. A mounting hole 9 is opened through the middle of the laser welding table 8, and a beam support welding assembly is disposed inside the mounting hole 9. The beam support welding assembly includes a first positioning plate 10 and a second positioning plate 11, which are symmetrically disposed inside the mounting hole 9.

[0032] Mounting holes 9 are located on the inner walls of the two sides between the first positioning plate 10 and the second positioning plate 11, where the first support plate 15 and the second support plate 16 are fixedly installed respectively. The top of the first positioning plate 10 and the second positioning plate 11 are both provided with inwardly extending positioning grooves 12.

[0033] A stiffening plate bracket 13 is fixedly installed on one end face of the first positioning plate 10 near the second positioning plate 11. A through hole 14 corresponding to the position of the stiffening plate bracket 13 is opened on one end face of the second positioning plate 11 near the stiffening plate bracket 13.

[0034] First limiting blocks 18 are symmetrically fixed on both sides of the bottom end of the first positioning plate 10, and second limiting blocks 19 are symmetrically fixed on both sides of the bottom end of the second positioning plate 11. An auxiliary rod 17 is slidably installed between one of the first limiting blocks 18 at the bottom end of the first positioning plate 10 and one of the second limiting blocks 19 at the bottom end of the second positioning plate 11. Fixing brackets 23 are fixedly connected between the two ends of the auxiliary rod 17 and the laser welding table 8.

[0035] Between the other first limiting block 18 at the bottom of the first positioning plate 10 and the other second limiting block 19 at the bottom of the second positioning plate 11, a bidirectional threaded rod 20 is threaded through. Both ends of the bidirectional threaded rod 20 are provided with rotating frames 21, and the bidirectional threaded rod 20 and the rotating frames 21 are rotatably engaged.

[0036] One end of each rotating frame 21 is fixedly installed on the outer wall of the laser welding station 8. One side of one of the rotating frames 21 is fixedly installed with a stepper motor 22, and the output end of the stepper motor 22 is coaxially fixedly connected to one end of the bidirectional threaded rod 20.

[0037] A cylinder 24 is vertically fixed at the bottom center of both the first positioning plate 10 and the second positioning plate 11. The piston rod of the cylinder 24 passes through the bottom of the positioning groove 12 and extends into the interior of the positioning groove 12. A lifting plate 25 is fixedly installed at the top of the piston rod of the cylinder 24. The lifting plate 25 slides and fits against the inner wall of the positioning groove 12.

[0038] Two guide rods 26 are symmetrically and vertically arranged on both sides of the cylinder 24. The top of the guide rod 26 passes through the bottom of the positioning groove 12 and extends into the groove, and is fixedly connected to the bottom of the lifting plate 25.

[0039] In this embodiment, addressing the industry pain points of disconnected cutting and welding processes, low efficiency and poor precision in manual assembly during existing steel structure bracket processing, a fully automated integrated laser cutting and welding system is constructed. This system deeply aligns with the automation and intelligent upgrading direction of the intelligent manufacturing equipment industry and represents a core technological innovation in the fields of metal cutting equipment manufacturing and welding equipment manufacturing for prefabricated building steel structure processing scenarios. Its specific working principle is as follows:

[0040] The structural steel plates to be processed are fed into the laser cutting conveyor table 1. The displacement mechanism 2 drives the laser cutting mechanism 3 to complete the automated blanking and beveling of the plates, including the flange plate, web plate, and stiffening plate, according to the preset bracket component processing drawings. The entire process requires no manual intervention, ensuring the cutting accuracy and beveling quality of the plates from the source. This solves the core problem of the disconnect between the cutting process and the subsequent welding process in traditional split-type equipment, laying a unified CNC benchmark for subsequent automated assembly and welding. For bracket components of different specifications, the stepper motor 22 drives the bidirectional threaded rod 20 to rotate, causing the first limit block 18 and the second limit block 19 to move synchronously in opposite directions along the auxiliary rod 17, adjusting the distance between the first positioning plate 10 and the second positioning plate 11. This adapts to the processing of brackets with different flange widths, greatly improving the flexibility and adaptability of the device and solving the pain point that existing devices cannot adapt to the processing of brackets of multiple specifications.

[0041] The cut sheet metal rests at the unloading station of the laser cutting conveyor 1. The first robotic arm 4, through its end magnetic suction mechanism 5 and in conjunction with a vision recognition system, precisely grasps the corresponding sheet metal and completes automated loading and assembly according to the processing sequence: First, two corbel flange plates are precisely placed into the positioning grooves 12 at the top of the first positioning plate 10 and the second positioning plate 11, respectively. The groove size of the positioning groove 12 is precisely matched with the thickness of the flange plate, realizing automatic centering and positioning of the flange plate without the need for manual marking and calibration, fundamentally eliminating the alignment deviation of manual assembly; then, the corbel stiffening plate is precisely placed on the stiffening plate bracket 13. The stiffening plate bracket 13 is fixed to the end face of the first positioning plate 10, providing stable support for the stiffening plate and ensuring the vertical alignment accuracy between the stiffening plate and the flange plate. Finally, the two corbel web plates are placed on the top surfaces of the first support plate 15 and the second support plate 16 respectively, ensuring precise fit between the upper and lower edges of the web plates and the bevels of the flange plates. This completes the automated and precise assembly of all corbel components. The assembly gap fully meets the process reference requirements of laser welding, completely solving the core defects of existing devices that require manual transport and alignment assembly, resulting in high labor intensity, low production efficiency, and uncontrollable assembly accuracy. For variable cross-section corbels with inclined flange plates, the tilt angle of the second positioning plate 11 can be adjusted via the tilt adjustment component at the bottom of the second positioning plate 11, adapting to corbel processing with different slopes and further expanding the applicable scenarios of the device.

[0042] After assembly, the second robotic arm 6 drives the laser welding mechanism 7 at its end to complete the automated welding of all bevel welds on the front of the corbel in sequence according to the preset welding process path. During the welding process, the first positioning plate 10 and the second positioning plate 11 always form a stable limit on the flange plate to avoid assembly offset caused by welding thermal deformation, ensure the weld formation quality and uniformity of penetration depth, meet the forming requirements of the first-level weld of steel structure, and solve the problems of poor quality consistency and easy welding defects in traditional manual welding.

[0043] After the front welding is completed, the cylinders 24 at the bottom of the first positioning plate 10 and the second positioning plate 11 are activated simultaneously. The piston rod of the cylinder 24 extends upward, driving the lifting plate 25 to slide upward along the inner wall of the positioning groove 12, smoothly lifting the welded bracket workpiece as a whole, so that the workpiece is completely separated from the positioning groove 12, providing an interference-free working space for subsequent flipping operations. At the same time, during the upward sliding process, the outer wall of the lifting plate 25 is in close contact with the inner wall of the positioning groove 12, which can simultaneously scrape away the residual welding slag and spatter inside the positioning groove 12, ensuring that the inner wall of the positioning groove 12 is smooth and free of foreign objects, avoiding the impact of welding slag residue on the positioning accuracy of subsequent batches of workpieces, eliminating the need for manual shutdown for cleaning, greatly improving the continuous operation capability of the equipment, and solving the industry pain point of easy welding slag jamming and frequent manual cleaning required by existing tooling. The guide rods 26 on both sides of the cylinder 24 can provide precise guidance for the lifting stroke of the lifting plate 25, avoiding deviation and jamming during the lifting process, and ensuring the stability of workpiece lifting.

[0044] After the bracket workpiece is lifted into position, the first robotic arm 4 uses the magnetic material-grabbing mechanism 5 to attract the welded front side of the workpiece, smoothly grasp the workpiece, and complete a 180° non-destructive flip. Then, the flipped workpiece is placed smoothly on the top surface of the first support plate 15, the second support plate 16, the first positioning plate 10, and the second positioning plate 11, so that the reverse side to be welded is facing upwards. The entire process does not require manual assistance in flipping, avoiding weld damage and reference offset problems caused by manual flipping. After flipping, there is no need for secondary calibration and positioning, and the original CNC reference is directly used. Subsequently, the second robotic arm 6 drives the laser welding mechanism 7 again to complete the automated welding operation of all welds on the reverse side of the bracket, realizing continuous automated welding of double-sided welds on the bracket.

[0045] After the double-sided welding is completed, the first robotic arm 4 uses the magnetic material-grabbing mechanism 5 to pick up the finished workpiece and place it at the unloading station, thus completing the fully automated processing of the entire bracket component.

[0046] Through fully automated process linkage, the entire closed loop of steel structure brackets from laser cutting to finished product welding has been completely opened up. All processes can be completed without human intervention, improving production efficiency and ensuring assembly accuracy and weld pass rate. This not only deeply meets the upgrading requirements of the intelligent manufacturing equipment industry for intelligent and unmanned steel structure processing, but also promotes the technological innovation of metal cutting equipment manufacturing and welding equipment manufacturing from single-function equipment to integrated, fully intelligent equipment. It adapts to the standardized and batch stable processing needs of prefabricated building steel structure components and solves the industry pain points that have long been unresolved by existing technologies.

[0047] Example 2: Please refer to Figure 9 - Figure 11 This embodiment further illustrates Example 1, wherein the bottom end of the second positioning plate 11 is provided with an tilt adjustment component.

[0048] The tilt adjustment assembly includes two limiting sleeves 28, which are respectively positioned above the top of the two second limiting blocks 19. A fixing post 27 is fixedly installed at the middle of the top of each limiting sleeve 28. The top of the fixing post 27 is fixedly installed at the bottom of the second positioning plate 11. A rotating cavity is opened inside the bottom of each limiting sleeve 28. A rotating disk 29 is rotatably installed inside the rotating cavity. Several positioning abutment grooves 33 are opened circumferentially on the edge of the rotating disk 29. A connecting post 30 is fixedly installed at the middle of the bottom of the rotating disk 29. The bottom of the connecting post 30 is fixedly installed at the top of the corresponding second limiting block 19.

[0049] Each limiting sleeve 28 has a positioning bolt 31 threaded through one side wall. One end of the positioning bolt 31 abuts in one of the positioning abutment grooves 33 on the corresponding side, and the other end of the positioning bolt 31 is fixedly installed with an auxiliary handle 32.

[0050] In prefabricated steel structure engineering, the steel structure brackets used in large-span portal steel frames and heavy industrial plants are mostly variable cross-section wedge-shaped brackets with inclined flanges. The lower flange plates need to be set with different inclination angles according to the building load and span requirements. There is no uniform fixed value for the inclination angle of the flange plates for different projects and specifications. Existing processing equipment can only adapt to the processing of brackets with uniform cross-section straight flange plates, and cannot flexibly adjust the inclination angle of the positioning fixture. When changing bracket specifications, the entire set of special fixtures must be replaced, which not only results in high fixture costs and long changeover cycles, but also easily leads to uneven gaps between the flange and web bevels, directly causing uncontrollable welding quality and failing to meet the high-precision processing requirements of variable cross-section brackets. This embodiment perfectly solves this industry pain point by setting an inclination adjustment component, further expanding the flexible adaptability of the device, and deeply matching the upgrading requirements of the intelligent manufacturing equipment industry for flexible processing of multiple varieties and small batches of components. It is a core technology optimization for the processing of variable cross-section steel structure components in the fields of metal cutting equipment manufacturing and welding equipment manufacturing. Its specific working principle is as follows:

[0051] To address the processing requirements of variable cross-section brackets with inclined wing plates, the tilt angle of the second positioning plate 11 must be adjusted before welding. Before adjustment, the positioning bolts 31 on the side walls of the two limiting sleeves 28 are rotated by the auxiliary handle 32, so that the ends of the positioning bolts 31 are completely removed from the positioning contact grooves 33 on the edge of the rotating disk 29, releasing the circumferential locking constraint between the limiting sleeves 28 and the rotating disk 29. At this time, the limiting sleeves 28 can rotate freely relative to the rotating disk 29 through the rotating cavity inside the bottom end, so that the second positioning plate 11 and the second limiting block 19 form a relatively rotatable movable connection, providing complete freedom of movement for the adjustment of the tilt angle of the second positioning plate 11.

[0052] After the locking constraint is released, the tilt angle of the second positioning plate 11 can be precisely and flexibly adjusted according to the design tilt angle of the corbel wing plate. The second limit block 19 on the auxiliary rod 17 can be directly pushed, and the second positioning plate 11 can be rotated around the axis of the rotating disk 29 through the force transmission of the tilt adjustment component, and quickly adjusted to the design tilt angle. The overall adjustment process is intuitive and convenient, without the need to replace any tooling parts, which greatly shortens the product changeover cycle and solves the core pain points of poor adaptability and high changeover cost of existing devices.

[0053] After the tilt angle of the second positioning plate 11 is adjusted to the correct position, the auxiliary handle 32 is rotated in the opposite direction, causing the positioning bolt 31 to be screwed into the limiting sleeve 28. This ensures that the end of the positioning bolt 31 precisely abuts against the corresponding positioning abutment groove 33 on the edge of the rotating disk 29, thus re-completing the circumferential locking between the limiting sleeve 28 and the rotating disk 29. At this point, the second positioning plate 11 and the second limiting block 19 are restored to a rigid fixed constraint, preventing relative rotation. This ensures that the tilt angle of the second positioning plate 11 remains stable during subsequent assembly and welding processes, preventing angle deviation due to welding vibration or thermal deformation. This fundamentally guarantees the bevel fitting accuracy of the flange plate and the web plate, providing a stable process benchmark for subsequent laser welding.

[0054] After the angle is locked, the automated feeding, assembly, and welding of the variable cross-section bracket can be completed according to the full process of Example 1. The first robotic arm 4 accurately places the lower flange plate with the tilt angle into the positioning groove 12 of the second positioning plate 11. The positioning groove 12 maintains the preset tilt angle synchronously with the second positioning plate 11, which can form a precise limit support for the tilted flange plate, ensuring that the tilt angle of the flange plate is completely consistent with the design value. There is no need for repeated manual calibration and alignment, which completely solves the core defects of poor accuracy and low efficiency of manual assembly of variable cross-section brackets. After the assembly is completed, the second robotic arm 6 drives the laser welding mechanism 7, which can synchronously adjust the incident posture of the welding head according to the tilt angle of the second positioning plate 11, ensuring that the laser beam is always perpendicular to the bevel welding surface, ensuring uniform weld penetration and stable forming quality, and meeting the forming requirements of the first-level weld of the variable cross-section bracket.

[0055] This embodiment, through the setting of the tilt adjustment component, enables the device to flexibly adapt to the processing of variable cross-section brackets at any tilt angle, eliminating the need for special tooling, significantly reducing tooling costs, shortening product changeover time, and perfectly adapting to the batch processing needs of multi-specification and customized bracket components in prefabricated buildings. This embodiment further improves the device's full-process adaptability, not only deeply aligning with the flexible and intelligent upgrading direction of the intelligent manufacturing equipment industry, but also promoting the technological upgrading of variable cross-section steel structure component processing equipment in the fields of metal cutting equipment manufacturing and welding equipment manufacturing. Compared with existing technologies, it has outstanding substantive features and significant technological progress.

[0056] Meanwhile, the displacement mechanism 2, laser cutting mechanism 3, magnetic material suction mechanism 5 and laser welding mechanism 7 used in this device are all existing mature and common automated processing components. Their structure, driving method and working principle are conventional and well-known technologies in the field, so they will not be described in detail in this invention.

[0057] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0058] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser cutting and welding integrated device for steel structure processing, comprising a laser cutting conveyor table, a laser cutting mechanism disposed at the top of the laser cutting conveyor table, and a laser welding table adjacent to one side of the laser cutting conveyor table, characterized in that: A displacement mechanism is fixed at the top of the laser cutting conveyor table. The sliding seat of the displacement mechanism is fixedly connected to the laser cutting mechanism. A support frame is fixed at the bottom of the laser welding table. A first robotic arm and a second robotic arm are respectively set on both sides of the laser welding table. A fixed seat is fixed at the bottom of both the first robotic arm and the second robotic arm. A magnetic material suction mechanism is connected to the execution end of the first robotic arm. A laser welding mechanism is connected to the execution end of the second robotic arm. An installation hole is opened through the middle of the laser welding table. A beam support welding assembly is set inside the installation hole. The beam support welding assembly includes a first positioning plate and a second positioning plate, which are symmetrically arranged inside the mounting hole. The bottom end of the second positioning plate is provided with a tilt adjustment component.

2. The integrated laser cutting and welding device for steel structure processing according to claim 1, characterized in that: The mounting holes are located on the inner walls on both sides between the first positioning plate and the second positioning plate, and the first support plate and the second support plate are fixedly installed respectively. The top of the first positioning plate and the second positioning plate are respectively provided with an inwardly extending positioning groove.

3. The integrated laser cutting and welding device for steel structure processing according to claim 1, characterized in that: A stiffening plate bracket is fixedly installed through one end face of the first positioning plate near the second positioning plate, and a through hole corresponding to the position of the stiffening plate bracket is opened through one end face of the second positioning plate near the stiffening plate bracket.

4. The integrated laser cutting and welding device for steel structure processing according to claim 1, characterized in that: The bottom ends of the first positioning plate are symmetrically fixed with first limiting blocks on both sides, and the bottom ends of the second positioning plate are symmetrically fixed with second limiting blocks on both sides. An auxiliary rod is slidably installed between one of the first limiting blocks at the bottom end of the first positioning plate and one of the second limiting blocks at the bottom end of the second positioning plate. The two ends of the auxiliary rod are fixedly connected to the laser welding station with a fixing frame.

5. The integrated laser cutting and welding device for steel structure processing according to claim 4, characterized in that: A bidirectional threaded rod is threaded through the other first limiting block at the bottom of the first positioning plate and the other second limiting block at the bottom of the second positioning plate. A rotating frame is threaded through both ends of the bidirectional threaded rod, and the bidirectional threaded rod rotates in conjunction with the rotating frame.

6. The integrated laser cutting and welding device for steel structure processing according to claim 5, characterized in that: One end of each rotating frame is fixedly installed on the outer wall of the laser welding station. A stepper motor is fixedly installed on one side of one of the rotating frames, and the output end of the stepper motor is coaxially and fixedly connected to one end of the bidirectional threaded rod.

7. The integrated laser cutting and welding device for steel structure processing according to claim 1, characterized in that: Both the first positioning plate and the second positioning plate have cylinders vertically fixed at the bottom center. The piston rod of the cylinder passes through the bottom of the positioning groove and extends into the interior of the positioning groove. A lifting plate is fixedly installed at the top of the piston rod of the cylinder, and the lifting plate slides in contact with the inner wall of the positioning groove.

8. The integrated laser cutting and welding device for steel structure processing according to claim 7, characterized in that: Two guide rods are symmetrically and vertically arranged on both sides of the cylinder. The top of the guide rods penetrates the bottom of the positioning groove and extends into the groove, and is fixedly connected to the bottom of the lifting plate.

9. The integrated laser cutting and welding device for steel structure processing according to claim 4, characterized in that: The tilt adjustment assembly includes two limiting sleeves, which are respectively positioned above the top of two second limiting blocks. A fixing post is fixedly installed at the center of the top of each limiting sleeve, and the top of the fixing post is fixedly installed at the bottom of the second positioning plate. A rotating cavity is opened inside the bottom of each limiting sleeve, and a rotating disk is rotatably installed inside the rotating cavity. Several positioning and abutting grooves are opened circumferentially on the edge of the rotating disk. A connecting post is fixedly installed at the center of the bottom of the rotating disk, and the bottom of the connecting post is fixedly installed at the top of the corresponding second limiting block.

10. The integrated laser cutting and welding device for steel structure processing according to claim 9, characterized in that: Each limiting sleeve has a positioning bolt threaded through one side wall. One end of the positioning bolt abuts in one of the positioning grooves on the corresponding side, and the other end of the positioning bolt is fixedly installed with an auxiliary handle.

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