A laser cutting and welding integrated equipment for steel structural members

Abstract

The application provides a steel structure component laser cutting and welding integrated equipment, and relates to the technical field of laser processing, comprising a material plate conveying frame, a welding gantry and a cutting gantry arranged in sequence, wherein the material plate conveying frame is internally provided with a conveying mechanism with adjustable diameter and an adjustable guide gantry to adapt to the continuous conveying and preliminary positioning of different specifications of H-shaped steel, the welding gantry completes the welding of the fillet weld when the H-shaped steel continuously passes, and the cutting gantry realizes the accurate speed synchronization with the conveying H-shaped steel through the speed detection closed-loop control system, the driving gear meshing with the fixed convex column and the follow-up frame at the bottom of the cutting gantry, so that the synchronous follow-up laser cutting is completed under the condition that the H-shaped steel is continuously conveyed, the problems of production interruption and low efficiency caused by the cutting process in the prior art are solved, and the integrated, continuous and intelligent high-efficiency production of the H-shaped steel welding and cutting is realized.

Description

Technical Field

[0001] This invention relates to the field of laser processing technology, and in particular to an integrated laser cutting and welding device for steel structure components. Background Technology

[0002] With the widespread application of steel structure buildings, H-beams and other steel structural components serve as the main load-bearing framework, and their production and processing efficiency directly affects the progress of construction projects. Traditional H-beam production processes mainly consist of two methods: rolling and welding (for larger sections). The welding process is typically divided into two independent stages: first, the web and two flanges are joined together using welding equipment to form a continuous strip of H-beam; second, the welded long steel is transported to a separate cutting station for length cutting according to design requirements. This step-by-step production method results in a large production line footprint, cumbersome material handling, slow production cycle, and reduced overall efficiency due to waiting times between processes.

[0003] To improve production efficiency, the industry has tried to integrate welding and cutting functions into a single production line. While some existing integrated equipment has achieved spatial connection between welding and cutting processes, it is still generally necessary to pause the conveying of steel sections during cutting operations. The gantry or cutting head of the cutting station is fixed in a certain position, and static cutting is carried out after the steel section is conveyed to the position and stops. After the cutting is completed, the steel section is conveyed again, and the cutting head has to wait for the next section of steel section to arrive.

[0004] This intermittent "stop-cut-go" operation mode makes cutting time a bottleneck that restricts the continuous high-speed operation of the production line. Especially when performing precision operations such as laser cutting, the pause and start of the conveyor not only reduces the theoretical maximum production speed, but may also have an adverse effect on cutting accuracy due to factors such as inertia.

[0005] Therefore, there is an urgent need for an innovative steel structure component processing equipment that can achieve high-precision synchronous follow-up cutting without interrupting the continuous conveying and welding of steel sections, and that the cutting unit can quickly reset after cutting to match the continuous and efficient rhythm of welding and conveying, thereby truly realizing integrated, continuous, and intelligent high-efficiency production. Summary of the Invention

[0006] The purpose of this invention is to solve the problem of the intermittent operation mode of "stop-cut-go" in the existing steel processing equipment, which makes the cutting time a bottleneck restricting the continuous high-speed operation of the production line.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: an integrated laser cutting and welding equipment for steel structure components, comprising a material plate conveying frame and a finished product conveying frame. Multiple guide gantry frames for positioning and conveying H-beams are fixedly installed at equal intervals on the material plate conveying frame. A welding gantry frame for welding H-beams is fixedly installed at the conveying end of the material plate conveying frame. A cutting gantry frame is provided between the material plate conveying frame and the finished product conveying frame. Two vertical plate bases are provided at the bottom of the cutting gantry frame, and a first follower frame and a second follower frame are slidably installed on the two vertical plate bases respectively. The moving frame is used to install the cutting gantry frame. The first and second following frames can slide along the positive direction of the H-beam conveying direction. One of the vertical plate bases has a return groove. The vertical plate base has protruding columns arranged in a straight line. A longitudinal slide block is slidably installed on the first following frame. A second drive gear that meshes with the protruding column is rotatably installed on the longitudinal slide block. The shaft of the second drive gear is slidably inserted into the return groove. The second drive gear is driven by an external motor to rotate and drive the cutting gantry frame and the H-beam to move synchronously to achieve follow-up cutting. The system also includes:

[0008] The conveying mechanism installed in the material plate conveying frame has multiple conveying mechanisms arranged in an equidistant linear array. The conveying mechanism is in the form of rollers with a large diameter in the middle and small diameters on both sides. The diameter of the middle section of the conveying mechanism can be adjusted to accommodate the conveying of H-beams with flanges of different widths.

[0009] In at least some embodiments, the conveying mechanism includes a wing plate conveying roller, a spline sleeve, and a conveying arc plate. The wing plate conveying roller is rotatably mounted inside the material plate conveying frame. Two spline sleeves are provided and symmetrically fitted onto the shaft of the wing plate conveying roller. The shaft of the wing plate conveying roller is provided with a spline that matches the spline sleeve. A stabilizing spring is fixedly installed between the two spline sleeves. The conveying arc plate consists of multiple pieces arranged in a ring to form a roller shape. A support rod is rotatably connected between the spline sleeve and the conveying arc plate. The two spline sleeves move towards each other, driving the conveying arc plate to expand and contract through the support rod. An adjusting frame is rotatably fitted onto the spline sleeve.

[0010] In at least some embodiments, a plurality of synchronous pulleys are rotatably mounted inside the material conveyor frame, and a synchronous belt is sleeved between the plurality of synchronous pulleys. One of the synchronous pulleys is driven to rotate by an external motor to drive the plurality of conveying mechanisms to rotate synchronously in the same direction.

[0011] In at least some embodiments, multiple opposing lead screws are rotatably installed inside the material plate conveying frame. The threads on both sides of the opposing lead screws are in opposite directions and have the same pitch. Each of the two adjusting frames is equipped with a lead screw pair adapted to the opposing lead screw. The opposing lead screws rotate in both directions, causing the two adjusting frames to move synchronously towards each other. A worm gear is fixedly fitted in the middle of the opposing lead screw. A high-torque worm is rotatably installed inside the material plate conveying frame. The high-torque worm is simultaneously engaged with multiple worm gears.

[0012] In at least some embodiments, two horizontal slide blocks are symmetrically slidably mounted on the guide gantry, and two clamping rollers for positioning the wing plates are longitudinally rotatably mounted on the horizontal slide blocks. A clamping spring is fixedly installed between the horizontal slide blocks and the top protrusion of the guide gantry. A lower pressure roller frame for pressing down the web plate is rotatably mounted on both sides of the guide gantry, and a torsion spring is installed between the shaft of the lower pressure roller frame and the guide gantry.

[0013] In at least some embodiments, the upper and lower ends of the welding gantry have telescopic adjustment functions, and welding torches are symmetrically slidably installed on both the upper and lower sections of the welding gantry, with the welding torches facing the connection between the web and the flange of the H-beam.

[0014] In at least some embodiments, the cutting gantry adopts a screw lifting design to center H-beams of different sizes. The cutting gantry has circular holes for the H-beams to pass through, and a stabilizing plate is concentrically fixed on the circular holes. An adjustable mounting seat is fixedly installed on the stabilizing plate in a four-point array. A stabilizing roller is slidably installed on the adjustable mounting seat and positioned by bolts to clamp and stabilize the welded H-beams.

[0015] In at least some embodiments, the adjustable mounting base is equipped with a speed sensor, and the detection end of the speed sensor is fixedly connected to the shaft of the stabilizing roller to detect the conveying speed of the H-beam.

[0016] In at least some embodiments, a rotating disk is concentrically mounted on the cutting gantry and rotates with the stabilizing disk. A cross-shaped electric slide is fixedly mounted on the rotating disk, and a laser cutter is mounted on the cross-shaped electric slide. A flywheel is fixedly mounted on the rotating disk. A first drive gear that meshes with the flywheel is rotatably mounted on the cutting gantry. An external motor for driving the rotating disk to rotate is mounted on the cutting gantry to cooperate with the cross-shaped electric slide to achieve cutting without dead angles.

[0017] In at least some embodiments, a bidirectional laser rangefinder is fixedly installed on the second follower frame, and reflectors are fixedly installed at both ends of the other vertical plate base corresponding to the laser rangefinder, so as to detect the position and speed of the cutting gantry.

[0018] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0019] 1. This invention achieves continuous synchronous production and greatly improves efficiency: Through the innovative synchronous follow-up cutting mechanism, the cutting gantry can keep in sync with the continuously conveyed steel sections and return quickly after cutting to wait for the next cutting, realizing seamless connection between welding and cutting processes, completely eliminating the production cycle interruption caused by the traditional "stop-cut-go" mode, and significantly improving overall production efficiency.

[0020] 2. The present invention adopts a dual-speed detection and comparison design to improve the accuracy of synchronous follow-up cutting: the rotation speed sensor set at the cutting station and the laser rangefinder on the follow-up frame detect the steel conveying speed and the cutting unit moving speed in real time, respectively, forming dual data feedback. The control system compares the two in real time and adjusts them in a closed loop, dynamically driving the follow-up mechanism, ensuring that the cutting unit and the moving steel achieve and maintain extremely high speed synchronization accuracy, providing a core guarantee for dynamic cutting.

[0021] 3. This invention enhances the flexibility of the equipment and enables it to quickly adapt to the production of multiple specifications: the adjustable diameter of the middle section of the conveying mechanism and the adjustable design of the guiding and clamping components enable the equipment to quickly adapt to the production of H-beams with different web heights and flange widths, greatly improving the flexibility and rapid changeover capability of the production line. Attached Figure Description

[0022] Figure 1 This invention provides an overall three-dimensional schematic diagram of an integrated laser cutting and welding equipment for steel structure components;

[0023] Figure 2 This invention provides a schematic diagram of the material conveying frame in an integrated laser cutting and welding equipment for steel structure components;

[0024] Figure 3 This invention provides an installation diagram of the conveying mechanism in an integrated laser cutting and welding equipment for steel structure components;

[0025] Figure 4 This invention presents a schematic diagram illustrating the synchronous driving principle of multiple conveying mechanisms in an integrated laser cutting and welding equipment for steel structure components.

[0026] Figure 5 This invention provides a schematic diagram of the drive mechanism in an integrated laser cutting and welding equipment for steel structure components;

[0027] Figure 6 This invention provides a schematic diagram of the unfolded form of the conveying mechanism in an integrated laser cutting and welding equipment for steel structure components.

[0028] Figure 7This invention provides a schematic diagram of the guide gantry frame in an integrated laser cutting and welding equipment for steel structure components;

[0029] Figure 8 This invention provides a schematic diagram of the welding gantry frame in an integrated laser cutting and welding equipment for steel structure components;

[0030] Figure 9 This invention provides an installation diagram of the cutting gantry and two vertical plate bases in an integrated laser cutting and welding equipment for steel structure components;

[0031] Figure 10 This invention provides a schematic diagram of the cutting gantry frame in an integrated laser cutting and welding equipment for steel structure components;

[0032] Figure 11 This invention provides a structural schematic diagram of one of the vertical plate bases in an integrated laser cutting and welding equipment for steel structure components;

[0033] Figure 12 This invention presents a schematic diagram of another vertical plate base in an integrated laser cutting and welding equipment for steel structure components.

[0034] Legend: 1. Material conveyor frame; 101. Synchronous pulley; 102. Synchronous belt; 103. Opposing lead screw; 104. Worm gear; 105. High-torque worm gear;

[0035] 2. Conveying mechanism; 201. Wing plate conveyor roller; 202. Spline sleeve; 203. Stabilizing spring; 204. Conveying arc plate; 205. Support rod; 206. Adjusting frame;

[0036] 3. Guide gantry frame; 301. Horizontal slide block; 302. Clamping roller; 303. Clamping spring; 304. Lower pressure roller frame;

[0037] 4. Welding gantry; 401 welding torch;

[0038] 5. Cutting gantry; 501. Stabilizing plate; 502. Adjustable mounting base; 503. Stabilizing roller; 504. Rotary disc; 505. Cross electric slide table; 506. Laser cutter; 507. Flywheel; 508. First drive gear;

[0039] 6. Vertical plate base; 601. U-shaped groove; 602. Protruding column; 603. First follower frame; 604. Longitudinal slide; 605. Second drive gear; 606. Second follower frame; 607. Laser rangefinder; 608. Reflector;

[0040] 7. Finished product conveyor rack. Detailed Implementation

[0041] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0042] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0043] In the detailed description of the problem, H-beams produced by welding are all made by splicing three plates together and welding them at the joints. After welding, they are usually cut according to usage requirements. The entire production process requires the combination of multiple machines. Therefore, the most important thing is production efficiency. A search of the Chinese invention patent with the same name, application number CN202511189241.X, proposed the prior art problems of long production cycle, low efficiency and additional equipment investment and process connection. However, the prior art still has defects. On the one hand, it is necessary to stop the conveyor during the cutting process, which still affects the production efficiency. In addition, when dealing with H-beams of different sizes and specifications (especially different flange widths), traditional conveyor rollers often lack a fast and effective adjustment mechanism. When changing products, cumbersome mechanical adjustments or even replacement of parts are required, which affects the flexibility and rapid changeover capability of the production line.

[0044] Therefore, this invention provides an integrated laser cutting and welding equipment for steel structure components. Its purpose is at least to enable high-precision synchronous laser cutting of H-beams while they are being continuously conveyed and welded, and to quickly reset the cutting unit after cutting, thereby eliminating production cycle interruptions caused by the cutting process and significantly improving production efficiency and processing flexibility.

[0045] Implementation examples, based on Figures 1-12 The embodiment of the present invention provides an integrated laser cutting and welding equipment for steel structure components, including a material conveying frame 1 and a finished product conveying frame 7, such as... Figure 1 and Figure 2 As shown, multiple guide gantry frames 3 for positioning and conveying H-beams are fixedly installed at equal intervals on the material plate conveying frame 1. A welding gantry frame 4 for welding H-beams is fixedly installed at the conveying end of the material plate conveying frame 1. A cutting gantry frame 5 is set between the material plate conveying frame 1 and the finished product conveying frame 7.

[0046] like Figure 2As shown, multiple opposing lead screws 103 are rotatably installed inside the material plate conveying frame 1. The threads on both sides of the opposing lead screws 103 are opposite in direction and have the same pitch. Each of the two adjusting frames 206 is equipped with a lead screw pair adapted to the opposing lead screws 103. The forward and reverse rotation of the opposing lead screws 103 drives the two adjusting frames 206 to move synchronously towards each other. A worm gear 104 is fixedly fitted in the middle of the opposing lead screws 103. A high-torque worm 105 is rotatably installed inside the material plate conveying frame 1. The high-torque worm 105 is simultaneously meshed with and connected to multiple worm gears 104.

[0047] In order to achieve synchronous adjustment of the diameter of all conveying mechanisms 2, multiple opposing lead screws 103 are installed in the material plate conveying frame 1 along its length. Each opposing lead screw 103 drives one conveying mechanism 2. The two ends of each opposing lead screw 103 have opposite threads but the same pitch. By rotating the high-torque worm gear 105 (which can be driven by a manual crank or servo motor), all opposing lead screws 103 can be driven to rotate synchronously, thereby achieving rapid and synchronous adjustment of the diameter of all conveying mechanisms 2 on the entire line, which greatly facilitates the changeover of H-beams of different specifications.

[0048] like Figure 3 and Figure 4 As shown, it also includes a conveying mechanism 2 installed in the material plate conveying frame 1. The conveying mechanism 2 is provided with multiple conveyors arranged in an equidistant linear array. The conveying mechanism 2 is in the form of a roller with a large diameter in the middle and small diameters on both sides. The diameter of the middle section of the conveying mechanism 2 can be adjusted to adapt to the conveying of H-beams with different widths of flanges. Multiple synchronous pulleys 101 are rotatably installed in the material plate conveying frame 1, and synchronous belts 102 are sleeved between the multiple synchronous pulleys 101. One of the synchronous pulleys 101 is driven to rotate by an external motor to drive the multiple conveying mechanisms 2 to rotate synchronously in the same direction.

[0049] In order to achieve synchronous drive of all conveying mechanisms 2, a synchronous pulley 101 is fixedly installed at the shaft end of each wing plate conveying roller 201. All synchronous pulleys 101 are connected by a closed-loop synchronous belt 102. One of the synchronous pulleys 101 is directly driven by a drive motor installed on the material plate conveying frame 1, thereby driving all wing plate conveying rollers 201 to rotate synchronously and in the same direction, providing continuous and stable conveying power for H-beams.

[0050] like Figure 5 and Figure 6As shown, the conveying mechanism 2 includes a wing plate conveying roller 201, a spline sleeve 202, and a conveying arc plate 204. The wing plate conveying roller 201 is rotatably installed inside the material plate conveying frame 1. There are two spline sleeves 202, which are symmetrically fitted on the shaft of the wing plate conveying roller 201. The shaft of the wing plate conveying roller 201 is provided with a spline that is compatible with the spline sleeve 202. A stabilizing spring 203 is fixedly installed between the two spline sleeves 202. The conveying arc plate 204 is provided with multiple pieces arranged in a ring to form a roller shape. A support rod 205 is rotatably connected between the spline sleeve 202 and the conveying arc plate 204. The two spline sleeves 202 move towards each other and drive the conveying arc plate 204 to expand and contract through the support rod 205. An adjusting frame 206 is rotatably fitted on the spline sleeve 202.

[0051] One of the wing plate conveying rollers 201 has a narrower diameter section on both sides used to support the wing plate section of the H-beam and as a power input. The opposing or back-to-back movement of the two spline sleeves 202 will push the ring chain composed of the conveying arc plate 204 to expand outward or contract inward through the support rod 205, thereby changing the outer diameter of the entire "drum-shaped" roller, especially the diameter of the area in the middle used to contact the wing plate, to adapt to H-beams with different wing plate widths.

[0052] It is worth noting that the length of the smaller diameter portion of the wing plate conveyor roller 201 is set to exceed the limit, so that it can adapt to H-type roller conveying with different web widths (the wing plate conveyor roller 201 is only used for support and conveying, and the positioning is limited by the gantry frame described below).

[0053] like Figure 7 As shown, two horizontal slide blocks 301 are symmetrically slidably installed on the guide gantry 3. Two clamping rollers 302 for positioning the wing plates are longitudinally rotatably installed on the horizontal slide blocks 301. A clamping spring 303 is fixedly installed between the horizontal slide blocks 301 and the top protrusion of the guide gantry 3. A lower pressure roller frame 304 for pressing down the web plate is rotatably installed on both sides of the guide gantry 3. A torsion spring is installed between the shaft of the lower pressure roller frame 304 and the guide gantry 3.

[0054] The main function of the guide gantry 3 is to precisely position the components of the H-beam (two flanges and one web) during the conveying process, ensuring that they are correctly aligned and enter the welding station. Under the pre-tightening force of the clamping spring 303, the clamping rollers 302 on both sides press the two flanges of the H-beam from the inside, limiting their left and right deviation, while allowing the flanges to be conveyed forward under the action of friction. In addition, on the lower part of both sides of the guide gantry 3, a lower pressure roller frame 304 is installed by a torsion spring hinge. The roller at the front end of the lower pressure roller frame 304 presses on the upper surface of the web, providing downward pressure under the action of the torsion spring, ensuring that the web is always in close contact with the inner side of the two flanges during the conveying process, preparing for subsequent welding.

[0055] It is worth noting that the length of the clamping roller 302 is also set beyond the limit, which is intended for use with H-beams of different widths of flanges. Combined with the above-mentioned over-limit setting of the conveying roller, it achieves the purpose of positioning and conveying H-beams with different widths of flanges and webs.

[0056] like Figure 8 As shown, the upper and lower ends of the welding gantry 4 have telescopic adjustment functions. Welding guns 401 are symmetrically slidably installed on both the upper and lower sections of the welding gantry 4. The welding guns 401 are directed towards the connection between the web and the flange of the H-beam. The nozzle of the welding gun 401 is precisely aligned with the inner corner joint of the web and the flange of the H-beam. During continuous conveying, the welding gun 401 itself does not move but moves relative to the H-beam, thereby forming two continuous, high-quality fillet welds between the web and the left and right flanges, completing the forming welding of the H-beam.

[0057] like Figure 9 and Figure 10 As shown, the cutting gantry 5 adopts a screw lifting design to center H-beams of different sizes. The cutting gantry 5 has a circular hole for the H-beams to pass through, and a stabilizing plate 501 is concentrically fixed on the circular hole. An adjustable mounting seat 502 is fixedly installed on the stabilizing plate 501 in a four-point array. A stabilizing roller 503 is slidably installed on the adjustable mounting seat 502 and positioned by bolts to clamp and stabilize the welded H-beams. A speed sensor is installed on the adjustable mounting seat 502, and the detection end of the speed sensor is fixedly connected to the shaft of the stabilizing roller 503 to realize the detection of the H-beam conveying speed.

[0058] A rotating disk 504 is mounted on the cutting gantry 5, which rotates concentrically with the stabilizing disk 501. A cross electric slide 505 is fixedly mounted on the rotating disk 504, and a laser cutter 506 is mounted on the cross electric slide 505. A flywheel 507 is fixedly mounted on the rotating disk 504. A first drive gear 508 that meshes with the flywheel 507 is rotatably mounted on the cutting gantry 5. An external motor for driving the rotating disk 504 to rotate is mounted on the cutting gantry 5 to cooperate with the cross electric slide 505 to achieve cutting without dead angles.

[0059] In this design, a rotating disk 504 is mounted concentrically in front of the stabilizing disk 501 via a large slewing bearing. A cross-shaped electric slide 505 is fixed on the rotating disk 504, and a laser cutter 506 is mounted on the slider on the slide. A flywheel 507 is fixedly fitted on the outer edge of the rotating disk 504. Another servo motor is mounted on the cutting gantry frame 5. This motor drives the rotating disk 504 to rotate precisely 360 degrees via a first drive gear 508 (or a direct drive pinion) meshing with the flywheel 507. Through the rotation of the rotating disk 504 and the movement of the cross-shaped electric slide 505 in a two-dimensional plane, the laser cutter 506 can achieve complex trajectory cutting without dead angles on the cross section of the H-beam.

[0060] like Figure 11 and Figure 12 As shown, the bottom of the cutting gantry 5 is provided with two vertical plate bases 6. A first follower frame 603 and a second follower frame 606 are slidably mounted on the two vertical plate bases 6 for mounting the cutting gantry 5. The first follower frame 603 and the second follower frame 606 can slide along the positive direction of the H-beam conveying direction. One of the vertical plate bases 6 has a groove 601, and protrusions 602 are arranged in a straight line on the vertical plate base 6. A longitudinal slide block 604 is slidably mounted on the first follower frame 603. A second drive gear 605 is rotatably mounted on the upper part and meshes with the protrusion 602. The shaft of the second drive gear 605 is slidably inserted into the groove 601. The second drive gear 605 is driven by an external motor to rotate and drive the cutting gantry 5 and the H-beam to move synchronously to achieve follow-up cutting. A laser rangefinder 607 capable of bidirectional laser is fixedly mounted on the second follow-up frame 606. Reflectors 608 are fixedly mounted on both ends of the other vertical plate base 6 corresponding to the laser rangefinder 607 to detect the position and speed of the cutting gantry 5.

[0061] Multiple protrusions 602 are fixedly arranged in a straight line along the length direction on the first vertical plate base 6. These protrusions 602 can be regarded as a "rack". When the servo motor drives the second drive gear 605 to rotate, a reaction force is generated due to the meshing of the gear and the fixed protrusions 602, which pushes the entire cutting gantry 5 (through the first and second follower frames 606) to move along the arrangement direction of the protrusions 602 (i.e. the conveying direction). However, due to the design of the return groove 601, the gear will turn back when it reaches the end of the cutting, that is, drive the cutting gantry 5 to move back, thus forming a reciprocating motion.

[0062] To achieve precise synchronization between the cutting gantry 5 and the H-beam conveying speed and form a closed-loop control, the laser rangefinder 607 can accurately calculate the real-time position of the cutting gantry 5 on the vertical plate base 6 by measuring the distance between the two end reflectors 608, and can calculate the moving speed of the cutting gantry 5 by combining the time.

[0063] Combined with the real-time detection of the H-beam speed, these data are fed back to the servo motor driving the second drive gear 605, forming a closed-loop control circuit. The gear speed is dynamically adjusted to ensure that the moving speed of the cutting gantry 5 is highly consistent with the conveying speed of the steel section, thus achieving true synchronous follow-up cutting (to achieve synchronous follow-up cutting, the stabilizing roller 503 should not rotate). During the return process of the cutting gantry 5, the speed is increased to make it return quickly and wait, so as to avoid affecting the next cutting action.

[0064] The specific working principle and process are as follows: First, by driving the high-torsion worm gear 105, all opposing lead screws 103 are driven to rotate synchronously, causing the two adjusting frames 206 on each conveying mechanism 2 to move towards or away from each other. The movement of the adjusting frame 206 pushes the spline sleeve 202 to slide along the spline shaft of the wing plate conveying roller 201, and through the linkage of the support rod 205, the "drum-shaped" roller surface composed of the annularly arranged conveying arc plates 204 expands or contracts synchronously, thereby adjusting its effective diameter in the middle section used to contact and drive the wing plate, ensuring optimal contact and driving force with wing plates of different widths. At the same time, the clamping rollers 302 on both sides of the guide gantry 3 can adapt to different wing plate spacings under the action of the clamping springs 303, and its extra-long design can cover common specifications; the lower pressure roller frame 304 presses the web plate under the action of the torsion spring, and its swing range is also adapted to different web plate heights. The welding gantry 4 and the cutting gantry 5 are height-adjusted according to the total height of the steel profile through their own lifting mechanisms (such as lead screws), so that the welding torch 401 is aligned with the corner seam and the center of the circular hole of the stabilizing plate 501 is aligned with the center of the steel profile cross-section. The stabilizing rollers 503 on the four adjustable mounting seats 502 on the stabilizing plate 501 are also manually adjusted to the appropriate position and locked to stably clamp the steel profile during cutting.

[0065] Step 2: Continuous conveying and synchronous welding. After preparation, start the equipment. The drive motor drives the synchronous pulley 101 to rotate, which in turn drives all the wing plate conveying rollers 201 to rotate synchronously and in the same direction via the synchronous belt 102. The web plate and the two wing plates are placed above the starting end of the material plate conveying frame 1. The web plate is placed on the "drum-shaped" roller surface raised in the middle of the conveying mechanism 2, while the two wing plates are placed on the smaller diameter roller surfaces on both sides. Driven by the friction of the rotating wing plate conveying rollers 201, the three plates are conveyed forward synchronously. When they pass through the first guide gantry 3, the clamping rollers 302 on both sides are pressed tightly against the wing plates from the inside under the action of spring force, limiting their left and right deviation; the rollers at the front end of the lower pressure roller frame 304 press against the upper surface of the web plate, ensuring that the web plate is tightly fitted to the inner wall of the two wing plates. This positioning state is maintained and consolidated by the sequential action of multiple subsequent guide gantry frames 3. The continuously conveyed plate group enters the welding gantry 4 area. The welding guns 401, which are symmetrically arranged at the top and bottom, are aligned with the corner seam between the continuously moving web plate and the flange plate in a stationary state, and perform continuous automatic welding to form a complete long strip H-shaped steel component.

[0066] Step 3: Synchronous follow-up laser cutting. The continuous long H-beam, after welding, leaves the welding station at a constant speed V1 and enters the cutting station area. Before cutting begins, a speed sensor mounted on the adjustable mounting base 502 detects the rotational speed of the stabilizing roller 503 in contact with it, calculates the actual conveying speed V1 of the steel section in real time, and transmits this signal to the control system. When the front end of the steel section reaches the preset cutting start position, the control system issues a cutting command.

[0067] Synchronous Start-up and Speed ​​Matching: The servo motor driving the second drive gear 605 on the first follower frame 603 starts. The control system performs closed-loop calculations based on the real-time steel section speed V1 and the current position and instantaneous speed of the cutting gantry 5 fed back by the laser rangefinder 607. The servo motor precisely controls the rotational speed of the second drive gear 605, causing it to mesh and roll on the protrusion 602 (as a rack) fixed on the vertical plate base 6. Due to the meshing action of the gear and the fixed protrusion 602, a reaction force is generated, pushing the entire cutting gantry 5 (through the first follower frame 603 and the second follower frame 606) to accelerate along the steel section conveying direction (positive direction) until its moving speed V2 and the steel section speed V1 are completely synchronized (V2=V1). At this time, the cutting gantry 5 and the steel section are in a relatively stationary state.

[0068] Dynamic stabilization and blind-angle cutting: During synchronous movement, the steel profile passes through the central hole of the stabilizing disc 501 and is flexibly clamped from all sides by four stabilizing rollers 503, effectively suppressing cutting vibration and ensuring cutting accuracy. Simultaneously, the control system coordinates three movements according to the preset cutting pattern (which may be a complex end face shape or oblique cutting angle): the first, a servo motor driving the rotation of the rotating disc 504 (meshing with the flywheel 507 via the first drive gear 508) controls the laser cutter 506 to rotate around the center of the steel profile cross-section; the second, a cross-shaped electric slide 505 drives the laser cutter 506 to move precisely in the radial and axial directions; and the second, the entire cutting gantry 5 undergoes synchronous follow-up linear motion (speed V2). The combined motion of these three elements enables the laser cutter 506 to complete high-precision cuts on any complex trajectory on the moving steel profile cross-section without interrupting the steel profile conveying (V1).

[0069] Speed ​​monitoring and closed-loop adjustment: Throughout the entire servo cutting process, the speed sensor continuously monitors the steel profile speed V1, and the laser rangefinder 607 continuously monitors the speed V2 and position of the cutting gantry 5. The control system compares V1 and V2 in real time and dynamically adjusts the servo motor speed driving the second drive gear 605 to ensure that the synchronization accuracy is always kept within the allowable range, achieving stable and high-quality dynamic cutting.

[0070] Step 4: Cutting completed and quick reset. Under the limit of the return groove 601, the cutting gantry 5 moves in the opposite direction at the end of the cutting. At this time, ignoring V1=V2, the motor speed is increased to make it return quickly and wait, so as to avoid affecting the next cutting action.

[0071] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A laser cutting and welding integrated equipment for steel structure components, comprising a material plate conveying frame (1) and a finished product conveying frame (7), wherein a plurality of guide gantry frames (3) for positioning and conveying H-beams are fixedly installed at equal intervals on the material plate conveying frame (1), a welding gantry frame (4) for welding H-beams is fixedly installed at the conveying end of the material plate conveying frame (1), and a cutting gantry frame (5) is provided between the material plate conveying frame (1) and the finished product conveying frame (7), characterized in that: The cutting gantry (5) has two vertical plate bases (6) at its bottom. A first follower frame (603) and a second follower frame (606) are slidably mounted on the two vertical plate bases (6) for mounting the cutting gantry (5). The first follower frame (603) and the second follower frame (606) can slide along the positive direction of the H-beam conveying direction. One of the vertical plate bases (6) has a groove (601) and protrusions (602) are arranged in a straight line on the vertical plate base (6). A longitudinal slide block (604) is slidably mounted on the first follower frame (603). A second drive gear (605) that meshes with the protrusions (602) is rotatably mounted on the longitudinal slide block (604). The shaft of the second drive gear (605) is slidably inserted into the groove (601). The second drive gear (605) is driven by an external motor to rotate and drive the cutting gantry (5) to move synchronously with the H-beam to achieve follower cutting. The gantry (5) also includes: The conveying mechanism (2) installed in the material plate conveying frame (1) has multiple conveying mechanisms (2) arranged in an equidistant linear array. The conveying mechanism (2) is in the form of a roller with a large diameter in the middle and small diameter on both sides. The diameter of the middle section of the conveying mechanism (2) can be adjusted to adapt to the conveying of H-beams with different width flanges.

2. The integrated laser cutting and welding equipment for steel structure components according to claim 1, characterized in that: The conveying mechanism (2) includes a wing plate conveying roller (201), a spline sleeve (202), and a conveying arc plate (204). The wing plate conveying roller (201) is rotatably installed inside the material plate conveying frame (1). There are two spline sleeves (202) symmetrically fitted on the shaft of the wing plate conveying roller (201). The shaft of the wing plate conveying roller (201) is provided with a spline that is compatible with the spline sleeve (202). A stabilizing spring (203) is fixedly installed between the two spline sleeves (202). The conveying arc plate (204) is provided with multiple pieces arranged in a ring to form a roller shape. A support rod (205) is rotatably connected between the spline sleeve (202) and the conveying arc plate (204). The two spline sleeves (202) move towards each other and drive the conveying arc plate (204) to expand and contract through the support rod (205). An adjusting frame (206) is rotatably fitted on the spline sleeve (202).

3. The integrated laser cutting and welding equipment for steel structure components according to claim 2, characterized in that: The material conveyor frame (1) is rotatably equipped with multiple synchronous pulleys (101) and a synchronous belt (102) is sleeved between the multiple synchronous pulleys (101). One of the synchronous pulleys (101) is driven to rotate by an external motor to drive the multiple conveying mechanisms (2) to rotate synchronously in the same direction.

4. The integrated laser cutting and welding equipment for steel structure components according to claim 3, characterized in that: Multiple opposing lead screws (103) are rotatably installed inside the material plate conveying frame (1). The threads on both sides of the opposing lead screws (103) are opposite in direction and have the same pitch. Each of the two adjusting frames (206) is equipped with a lead screw pair that is compatible with the opposing lead screws (103). The opposing lead screws (103) rotate in both directions, causing the two adjusting frames (206) to move synchronously towards each other. A worm gear (104) is fixedly fitted in the middle of the opposing lead screws (103). A high-torque worm (105) is rotatably installed inside the material plate conveying frame (1). The high-torque worm (105) is simultaneously engaged with multiple worm gears (104).

5. The integrated laser cutting and welding equipment for steel structure components according to claim 1, characterized in that: Two horizontal slide blocks (301) are symmetrically slidably installed on the guide gantry (3). Two clamping rollers (302) for positioning the wing plate are longitudinally rotatably installed on the horizontal slide blocks (301). A clamping spring (303) is fixedly installed between the horizontal slide blocks (301) and the top protrusion of the guide gantry (3). A lower pressure roller frame (304) for pressing down the web plate is rotatably installed on both sides of the guide gantry (3). A torsion spring is installed between the shaft of the lower pressure roller frame (304) and the guide gantry (3).

6. The integrated laser cutting and welding equipment for steel structure components according to claim 1, characterized in that: The upper and lower ends of the welding gantry (4) have telescopic adjustment functions. Welding guns (401) are symmetrically slidably installed on both the upper and lower sections of the welding gantry (4). The welding guns (401) are directed toward the connection between the web and the wing of the H-beam.

7. The integrated laser cutting and welding equipment for steel structure components according to claim 1, characterized in that: The cutting gantry (5) adopts a screw lifting design to center H-beams of different sizes. The cutting gantry (5) has a circular hole for the H-beam to pass through, and a stabilizing plate (501) is fixedly installed on the circular hole in a concentric manner. An adjustable mounting seat (502) is fixedly installed on the stabilizing plate (501) in a four-point array. A stabilizing roller (503) is slidably installed on the adjustable mounting seat (502) and positioned by bolts to clamp and stabilize the welded H-beam.

8. The integrated laser cutting and welding equipment for steel structure components according to claim 7, characterized in that: The adjustable mounting base (502) is equipped with a speed sensor, and the detection end of the speed sensor is fixedly connected to the shaft of the stabilizing roller (503) to realize the detection of the H-beam conveying speed.

9. The integrated laser cutting and welding equipment for steel structure components according to claim 8, characterized in that: A rotating disk (504) is mounted on the cutting gantry (5) and rotates concentrically with the stabilizing disk (501). A cross electric slide (505) is fixedly mounted on the rotating disk (504) and a laser cutter (506) is mounted on the cross electric slide (505). A flywheel (507) is fixedly mounted on the rotating disk (504). A first drive gear (508) that meshes with the flywheel (507) is rotatably mounted on the cutting gantry (5). An external motor for driving the rotating disk (504) to rotate is mounted on the cutting gantry (5) to cooperate with the cross electric slide (505) to achieve cutting without dead angles.

10. The integrated laser cutting and welding equipment for steel structure components according to claim 9, characterized in that: A bidirectional laser rangefinder (607) is fixedly installed on the second follower frame (606), and a reflector (608) is fixedly installed at both ends of the other vertical plate base (6) corresponding to the laser rangefinder (607) to detect the position and speed of the cutting gantry (5).

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