Welding device based on H-shaped steel machining

Abstract

The invention discloses a welding device based on H-shaped steel machining, and relates to the technical field of metal machining, the welding device comprises a foundation bottom plate, sliding frame bodies are arranged on the surfaces of the two sides of the foundation bottom plate, electric sliding vehicles are arranged in the two sliding frame bodies, and movable door frames are arranged on the upper surfaces of the electric sliding vehicles; two movable welding machining heads are arranged on the upper surface of the movable door frame, an auxiliary mechanism is further arranged on the upper surface of the foundation bottom plate, the auxiliary mechanism further comprises a clamping assembly, the clamping assembly comprises a clamping plate component and a bearing component, the clamping plate component comprises a machining workbench, the machining workbench is arranged on the upper surface of the foundation bottom plate, and the bearing component is arranged on the machining workbench; the bearing component comprises a bearing workbench, the bearing workbench is arranged at the center of the upper surface of the machining workbench, and in the scheme, the auxiliary mechanism is arranged, so that the whole-process intelligent operation of the H-shaped steel from extensive feeding to accurate in-position, and then to stress-free dynamic correction and stable welding is achieved.

Description

Technical Field

[0001] This invention relates to the field of metal processing technology, specifically to a welding device based on H-beam processing. Background Technology

[0002] H-beams, with their "H"-shaped cross-section, are core components in modern steel structure engineering. They are widely used in main load-bearing structures such as industrial plants, high-rise buildings, bridges, and heavy equipment supports. Their excellent mechanical properties stem from their scientific cross-sectional design, consisting of a web in the middle and parallel flanges on the top and bottom, giving them good bending and compressive strength in both principal axes. However, the full realization of these properties highly depends on the quality, strength, and consistency of the welds connecting the two flanges and the web. Therefore, the core manufacturing process of H-beams is to permanently and reliably connect these three steel plates into a single unit through welding. Given that welding has become the dominant connection method in steel structures... The industrial welding technology for H-beams has undergone continuous evolution. Initially, it mainly relied on manual arc welding or gas shielded welding performed by welders holding welding torches. The quality and efficiency of this method were greatly limited by the operator's skills and physical condition. To meet the needs of large-scale, standardized production, automated and specialized welding equipment emerged. Among them, gantry-type automatic welding machines, especially H-beam gantry welding machines using submerged arc welding technology, have become the mainstream solution for completing four main long fillet welds on mass production lines. This type of equipment programs the welding process, automating welding through preset paths and parameters, significantly improving the stability of welding efficiency and the repeatability of the production process. It has become a key piece of equipment for modern steel structure manufacturing enterprises to increase production capacity and ensure basic quality.

[0003] In existing automated welding production based on H-beams, gantry welding machines have become the mainstream equipment. However, their auxiliary mechanisms still have several inherent defects that affect quality, efficiency, and reliability when dealing with the complexities of actual production. In the critical clamping stage, traditional clamps mostly use rigid pressure plates combined with hydraulic or pneumatic drives. Their design concept aims to achieve "firm fixation" by applying huge positive pressure. When the clamped H-beams have unavoidable micro-angular deviations after assembly and spot welding, these rigid clamps force the workpiece to conform to their absolutely flat clamping surface. This process generates huge shear or tearing stress at the spot weld, which can easily lead to spot weld cracking or hidden plastic deformation of the workpiece near the clamping point. This creates hidden dangers of cracking and performance degradation for subsequent welding and long-term product use. Furthermore, in terms of load-bearing and support, traditional worktables are usually rigid platforms that are integrally cast or welded. After the workpiece is placed, a large area of ​​contact is formed between the bottom surface of its flange plate and the entire table surface, generating significant static friction. When the welding process requires or the workpiece itself requires fine-tuning of the flange angle, this friction will become the main resistance, forcing the clamping mechanism to output a large correction force. This not only increases energy consumption and aggravates the wear of the mechanism, but also easily leads to overcorrection or workpiece vibration due to improper force control, seriously affecting the correction accuracy and process stability. In addition, the initial positioning of the workpiece by traditional devices is highly dependent on the experience and feel of the crane operator, or requires manual prying for coarse adjustment, making it difficult to achieve accurate and repeatable automated centering, resulting in poor consistency of the reference for subsequent clamping and welding. Summary of the Invention

[0004] The purpose of this invention is to provide a welding device based on H-beam processing to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a welding device based on H-beam processing, comprising: A base plate has sliding frames on both sides, each containing an electric sliding trolley. The upper surface of each electric sliding trolley has a movable gantry, and the upper surface of the movable gantry has two movable welding heads. An auxiliary mechanism is also provided on the upper surface of the base plate. This auxiliary mechanism includes a clamping assembly, which comprises a clamping plate component and a load-bearing component. The clamping plate component includes a processing worktable disposed on the upper surface of the base plate. Side fixing plates are provided on both sides of the upper surface of the processing worktable. Multiple hydraulic push rods are provided on one side surface of each side fixing plate. A force-bearing connecting frame is provided at the end of the output shaft of each hydraulic push rod, and a supporting slide is provided on the bottom surface of the force-bearing connecting frame. The supporting component includes: a supporting worktable, which is located at the center of the upper surface of the processing worktable. Sliding slots are provided on both sides of the upper surface of the supporting worktable. Multiple limiting protrusions are provided on the bottom surface of the sliding slots. Sliding slides are provided inside the sliding slots.

[0006] Furthermore, both ends of the force-bearing connecting frame are provided with connecting side plates, one side surface of the connecting side plate is provided with a connecting collar, the upper and lower surfaces of the connecting collar are provided with connecting uprights, the upper surface of the connecting uprights is provided with a limiting upright, a sliding slot is provided at the center of the limiting upright, and a reset rack is provided inside the sliding slot.

[0007] Furthermore, a drive motor is provided on one side surface of the connecting frame, and a meshing screw is provided on the output end of the drive motor. The meshing screw meshes with the center of the reset frame bar. A rotating shaft is provided between the two connecting collars. Adjustment connecting rods are provided on both the upper and lower surfaces of the rotating shaft, and a side clamping plate is provided on one side surface of the rotating shaft.

[0008] Furthermore, both ends of the rotating shaft are provided with toothed holes, and a limiting toothed disc is provided inside the toothed holes. A limiting plug hole is provided on one side surface of the limiting toothed disc. A small auxiliary frame is provided on one side surface of the connecting collar. An electric telescopic rod is provided at the center of the small auxiliary frame. A limiting plug is provided at the end of the output shaft of the electric telescopic rod.

[0009] Furthermore, two clamping and limiting plates are provided at both ends of the bearing worktable, and two small motors are provided at both ends of the bearing worktable. The output shafts of the small motors mesh with the clamping and limiting plates. A central storage box is provided at the center of the upper surface of the bearing worktable. Multiple telescopic motors are provided inside the central storage box, and a central bearing plate is provided at the end of the output shaft of the telescopic motor.

[0010] Furthermore, the auxiliary mechanism also includes a positioning component, which includes two side detection cameras, each of which is respectively disposed on one end surface of the movable gantry. Both sides of the movable gantry are provided with electric rotating shafts, one side surface of each electric rotating shaft is provided with a rotating platform, and one side surface of each rotating platform is provided with an additional welding head.

[0011] Furthermore, an additional connecting block is provided on the upper surface of the base plate, a drive electric shaft is provided on the upper surface of the additional connecting block, an adjustment plate is provided on one side surface of the drive electric shaft, an additional base plate is provided on one side surface of the base plate, and the adjustment plate is provided on the upper surface of the additional base plate.

[0012] Furthermore, the upper surface of the adjustment plate is provided with an adjustment groove, and two adjustment meshing plates are arranged inside the adjustment groove. A side position motor is provided on one side surface of the adjustment plate, and a bidirectional screw is provided on the output end of the side position motor. The bidirectional screw meshes with the two adjustment meshing plates. A small rotating shaft is also provided on the upper surface of the additional connecting block, and a secondary detection camera is provided on the upper surface of the small rotating shaft.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. In this solution, by incorporating a clamping plate component, the constraint of the limiting plug on the limiting gear plate is pre-released during the initial clamping phase, allowing the side clamping plate to gain freedom around the rotation axis. This enables it to passively rotate upon contact with the workpiece wing plate, automatically adapting to its surface inclination angle and achieving stress-free, full-surface flexible conformal fitting. After fitting, the electric telescopic rod immediately drives the limiting plug to insert into the corresponding limiting plug hole on the limiting gear plate, instantly switching from a flexible adaptive state to an absolutely rigid locking state. This ensures that the side clamping plate and the workpiece wing plate become a rigid whole with no relative movement. This design... The design fundamentally solves the problems of spot weld tearing, local plastic deformation of plates, or internal hidden damage caused by the forced flattening of traditional rigid clamps when clamping workpieces with angular deviations. In the subsequent active correction stage, the precision transmission composed of a drive motor, meshing screw, and reset frame bar realizes online dynamic correction of the angular deviation of the flange during the welding process. While effectively correcting the geometric accuracy of the workpiece, it completely avoids secondary damage to the weld quality and base material properties caused by excessive or uneven correction force, and significantly improves the final load-bearing reliability and fatigue life of the welded structure. 2. In this solution, by setting up a load-bearing component, multiple telescopic motors in the central storage box synchronously drive the central load-bearing plate to rise, actively lifting the web of the H-beam. This intelligently switches the weight distribution of the workpiece from the traditional side wing plates to the central web plate, significantly reducing the positive pressure of the side wing plates on the sliding strips below. This significantly weakens the static friction resistance between the wing plates and the support surface, thus transforming the traditionally difficult-to-overcome sliding friction acting on a large platform into controllable internal sliding friction concentrated within a limited groove with an extremely low resistance coefficient. This solves the problems of difficult angle adjustment, the need for great driving force, and the tendency to jam or vibrate caused by the huge friction resistance between the workpiece and the platform in traditional welding platforms. It makes the micro-angle correction of heavy wing plates labor-saving, precise, and stable. After correction, the clamping and limiting plate relocks the sliding strips, providing stable lateral auxiliary support for welding and ensuring the ultra-high stability of the subsequent welding process. 3. In this solution, by incorporating an adjustment component, fully automatic and high-precision initial positioning of the workpiece after loading is achieved. The drive shaft precisely rotates the adjustment plate to the working position, while the side motor drives the bidirectional screw, causing the two adjustment meshing plates to move towards each other. Gentle clamping and linear push-pull are implemented from both sides of the workpiece web. Utilizing the sliding strips on the bearing components, which are already in a sliding state, the macroscopic positioning adjustment of the heavy workpiece is transformed into controlled translation on a low-friction guide rail until the workpiece centerline is completely aligned with the theoretical benchmark. The auxiliary detection camera continuously tracks and monitors the adjustment process, forming a dynamic visual closed-loop feedback to ensure that the positioning accuracy reaches the sub-millimeter level. This solves the problem of random placement error commonly found in heavy components such as H-beams after manual hoisting, as well as the pain points of low positioning accuracy, poor consistency, low efficiency, and high labor intensity caused by traditional reliance on manual prying and repeated fine-tuning by the crane. It establishes a unified and precise spatial benchmark for subsequent clamping and welding processes, ensuring extremely high repeatability positioning accuracy in mass production. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the clamping plate component structure of the present invention; Figure 3 This is a schematic diagram of the connecting collar and connecting frame structure of the present invention; Figure 4 This is a rear view schematic diagram of the connecting collar and connecting frame of the present invention; Figure 5 This is a schematic diagram of the disassembled structure of the load-bearing component of the present invention; Figure 6 This is a schematic diagram of the movable gantry structure of the present invention; Figure 7 This is a schematic diagram of the adjustment component structure of the present invention; Figure 8 For the present invention Figure 3 Enlarged view of point A in the middle.

[0015] In the diagram: 1. Base plate; 2. Additional base plate; 3. Sliding frame; 4. Machining workbench; 5. Side fixing plate; 6. Adjusting plate; 7. Additional connecting block; 8. Bearing workbench; 9. Side clamping plate; 10. Movable gantry; 11. Pushing hydraulic rod; 12. Connecting side plate; 13. Connecting collar; 14. Force-bearing connecting frame; 15. Supporting slide; 16. Drive motor; 17. Connecting upright; 18. Restricting upright; 19. Reset frame bar; 20. Engaging screw; 21. Adjusting connecting rod; 22. Restricting plug; 23. Rotating shaft; 24. Sliding slot; 25. Restricting protrusion 26. Sliding strip; 27. Clamping limiting plate; 28. Small motor; 29. ​​Central storage box; 30. Central bearing plate; 31. Telescopic motor; 32. Electric sliding trolley; 33. Welding processing head; 34. Side inspection camera; 35. Electric rotating shaft; 36. Rotating table; 37. Additional welding head; 38. Drive shaft; 39. Small rotating shaft; 40. Secondary inspection camera; 41. Adjustment slot; 42. Adjustment meshing plate; 43. Bidirectional screw; 44. Side motor; 45. Limiting gear plate; 46. Small additional frame; 47. Electric telescopic rod; 48. Limiting plug hole. Detailed Implementation

[0016] 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.

[0017] Example 1: Please refer to Figures 1 to 8 A welding apparatus based on H-beam processing, comprising: A base plate 1 has sliding frames 3 symmetrically installed on its left and right sides on its upper surface. Each sliding frame 3 has an electric trolley 32 mounted on its internal track, capable of precise movement along its length. A movable gantry 10 is mounted on the upper surface of the electric trolley 32, and two movable welding heads 33 are mounted on the upper surface of the movable gantry 10 for performing main welding operations. An auxiliary mechanism is also provided on the upper surface of the base plate 1, including a clamping assembly and an adjusting assembly. The clamping assembly includes a clamping plate component and a bearing... The clamping plate component is the core actuator for precisely clamping and dynamically correcting the H-beam steel flange. The clamping plate component includes: a processing worktable 4, which is mounted on the upper surface of the base plate 1. Side fixing plates 5 are mounted on both sides of the upper surface of the processing worktable 4. Multiple hydraulic push rods 11 are mounted on one side surface of each side fixing plate 5. A force-bearing connecting frame 14 is mounted at the end of the output shaft of each hydraulic push rod 11. A support slide 15 is mounted on the bottom surface of the force-bearing connecting frame 14. Connecting side plates are mounted at both ends of the force-bearing connecting frame 14. 12. A connecting collar 13 is provided on one side surface of the connecting side plate 12. Connecting supports 17 are provided on both the upper and lower surfaces of the connecting collar 13. A limiting support 18 is provided on the upper surface of the connecting support 17. A sliding groove is provided at the center of the limiting support 18, and a reset rack 19 is provided inside the sliding groove. A drive motor 16 is also provided on one side surface of the connecting support 17. A meshing screw 20 is provided on the output end of the drive motor 16. The meshing screw 20 meshes with the center of the reset rack 19. The two connecting collars 13... A rotating shaft 23 is provided, and an adjustment connecting rod 21 is provided on both the upper and lower surfaces of the rotating shaft 23. A side clamping plate 9 is provided on one side surface of the rotating shaft 23. Toothed holes are provided at both ends of the rotating shaft 23. A limiting toothed disc 45 is provided inside the toothed hole. A limiting plug hole 48 is provided on one side surface of the limiting toothed disc 45. A small auxiliary frame 46 is provided on one side surface of the connecting collar 13. An electric telescopic rod 47 is provided at the center of the small auxiliary frame 46. A limiting plug 22 is provided at the end of the output shaft of the electric telescopic rod 47. In use, the clamping plate component is used to clamp and fix the H-beam placed on the bearing component. After the pre-spot-welded H-beam is placed on the bearing worktable 8, the central control system issues a clamping command according to the preset program. Multiple push hydraulic rods 11 on both sides extend synchronously and uniformly under the drive of the hydraulic system, pushing the force-bearing connecting frame 14, which is rigidly connected to its output end, to move horizontally along the surface of the processing worktable 4. The support slide 15 installed at the bottom of the force-bearing connecting frame 14 ensures smooth movement without deviation. The entire clamping unit, including the connecting side plate 12, connecting collar 13, and side clamping plate 9, moves forward as a whole. Before the side clamping plate 9 contacts the surface of the workpiece wing plate, the locking mechanism is pre-unlocked to accommodate possible assembly angle errors: the electric... The telescopic rod 47 retracts, pulling the limiting block 22 out of the limiting plug hole 48 of the limiting gear disc 45 at the end of the rotating shaft 23. At this time, the rotating shaft 23 and the side clamping plate 9 mounted on it are in a freely rotatable state. When the side clamping plate 9 contacts the workpiece wing plate, if the wing plate has an inclination angle, the side clamping plate 9 will be passively rotated around the axis of the rotating shaft 23 under the action of contact force until its inner surface is completely attached to the outer surface of the wing plate, achieving adaptive conformal contact. This process is intuitively reflected by the offset angle of the adjusting connecting rod 21. After the contact is completed, the control system immediately commands the electric telescopic rod 47 to extend, accurately inserting the limiting block 22 into the limiting plug hole 48 corresponding to the current angle. The limiting gear disc 45 and the connecting collar 13 are rigidly locked, and the angle of the side clamping plate 9 is... The angle is firmly fixed, thus completing the flexible fit and rigid locking of the non-ideal angle workpiece. Next, the correction operation is performed: First, the electric rotating shaft 35 on the movable gantry 10 drives the rotating table 36 to rotate, causing the additional welding head 37 to move to above the pre-weld point on the other end of the workpiece and melt it, releasing the constraint on that side. The main welding head 33 then performs formal welding on the weld on the current side. After the temporary spot welding constraints on both sides of the workpiece are melted, the correction program is started: the two drive motors 16 start synchronously, driving the meshing screw 20 to rotate. Through meshing with the middle of the reset frame bar 19, the two reset frame bars 19 are forced to move towards each other in the sliding slot of the limiting frame 18. During the movement, the edges of the reset frame bars 19 will contact and squeeze the rotating shaft 2. The adjusting connecting rod 21, which is offset by rotation, is subjected to a torque that returns it to its initial vertical position. This torque is transmitted to the rotating shaft 23 through the adjusting connecting rod 21, forcing the rotating shaft 23 to overcome the workpiece inertia and slight resistance and rotate. Since the side clamping plate 9 is locked to the rotating shaft 23 by the limiting plug 22, and the side clamping plate 9 is in close contact with the surface of the wing plate, the rotational motion of the rotating shaft 23 is directly converted into a translational pushing force of the side clamping plate 9 on the workpiece wing plate. This slowly and smoothly corrects the wing plate with angular deviation to the theoretically designed vertical position. The entire correction process is carried out under the condition that the constraints at both ends of the wing plate have been released and the friction of the bearing components has been reduced. Therefore, the required correction force is small.This avoids plastic damage within the sheet metal or brittle tearing at spot welds.

[0018] The load-bearing component serves as the core load-bearing platform, combining load-bearing, unloading, and friction management functions. It is crucial for achieving efficient and low-damage straightening in conjunction with the clamping plate component. The load-bearing component includes: a load-bearing worktable 8, located at the center of the upper surface of the processing worktable 4. Sliding slots 24 are formed on both sides of the upper surface of the load-bearing worktable 8. Multiple limiting protrusions 25 are provided on the inner bottom surface of the sliding slots 24. Sliding sliding strips 26 are installed inside the sliding slots 24, and the bottom surface of the wing plate ultimately rests on the upper surface of the sliding strips 26. Two clamping limiting plates 27 are provided at both ends of the load-bearing worktable 8. Two small motors 28 are provided, and the output shafts of the small motors 28 mesh with the clamping and limiting plate 27. A central storage box 29 is provided at the center of the upper surface of the bearing worktable 8. Multiple telescopic motors 31 are provided inside the central storage box 29. A central bearing plate 30 is provided at the end of the output shaft of the telescopic motor 31. In the non-working state, the central bearing plate 30 can be completely retracted into the cavity of the central storage box 29 and is flush with the upper surface of the bearing worktable 8. When working is required, the multiple telescopic motors 31 can move synchronously and precisely to smoothly lift the central bearing plate 30 to the required height so that its upper surface forms a bearing contact with the bottom surface of the H-shaped steel web. The load-bearing component is used to support the H-beam during welding. When the H-beam workpiece is hoisted into place, the bottom surfaces of its left and right flanges are respectively supported on two independent sliding strips 26, while the web area spans across the central storage box 29. When the system determines that the flange angle needs to be corrected, the unloading and friction reduction mode of the load-bearing component is first activated. Multiple telescopic motors 31 arranged in a matrix inside the central storage box 29 receive commands and extend synchronously, jointly lifting the central load-bearing plate 30 so that its upper surface is tightly attached to the bottom surface of the H-beam web. As the central load-bearing plate 30 rises, the weight distribution of the workpiece changes fundamentally, with most of the weight... (Mainly borne by the web) The force is directly transmitted to the main frame of the bearing worktable 8 through the extremely rigid central bearing plate 30, thereby significantly reducing the normal pressure exerted by the two side flanges on the sliding strips 26 below them. The reduction in normal pressure directly leads to a significant decrease in the maximum static friction between the flanges and the sliding strips 26. Subsequently, to completely eliminate sliding friction resistance, the small motors 28 at both ends of the bearing worktable 8 are activated, driving the clamping restraint plate 27 to rotate and lift through gear transmission, releasing its lateral constraint on both ends of the sliding strips 26, so that the sliding strips 26 are in a free state where they are only constrained within the sliding slots 24. When the clamping plate component begins to apply a corrective force to the wing plate, forcing it to rotate around its connection with the web plate (where the original pre-welded point has melted), a relative sliding tendency will occur between the bottom surface of the wing plate and the upper surface of the sliding strip 26. Since the sliding strip 26 has been unlocked, and the engagement of its bottom limiting protrusion 25 with the sliding slot 24 provides precise guidance with low resistance, this sliding tendency is transformed into a smooth lateral sliding of the sliding strip 26 relative to the supporting worktable 8. This transforms the sliding friction that is difficult to overcome between the wing plate and the entire fixed worktable surface in the conventional method into a sliding friction between the sliding strip 26 and the hardened sliding slot 24 below. The controllable internal sliding friction between the inner walls has a much lower coefficient of friction than the former, which significantly reduces the external driving force required for angle correction. After correction is completed, the small motor 28 reverses and drives the clamping limiting plate 27 to fall down, re-pressing the end of the sliding strip 26 and locking it in the current position, providing stable lateral auxiliary support for subsequent welding. The telescopic motor 31 then retracts, causing the central bearing plate 30 to descend back into the central storage box 29, restoring the workbench surface to flatness. This achieves intelligent switching from "full load-bearing high friction state" to "central load-bearing, low resistance sliding state on both sides" and then to "double-sided locking stable state".

[0019] The positioning component is responsible for the initial precise positioning of the workpiece, establishing a unified spatial reference for subsequent clamping and welding. The positioning component includes: two side detection cameras 34, which are respectively set on the two end surfaces of one side of the movable gantry 10, looking down at the workpiece from above to obtain the contour features of the top surface and the end position information of the workpiece; electric rotating shafts 35 are set on both sides of the movable gantry 10; a rotating platform 36 is set on one side surface of the electric rotating shaft 35; an additional welding head 37 is set on one side surface of the rotating platform 36; an additional connecting block 7 is set on the upper surface of the base plate 1; a drive electric shaft 38 is set on the upper surface of the additional connecting block 7; an adjustment plate 6 is set on one side surface of the drive electric shaft 38; the drive electric shaft 38 can drive the entire adjustment plate 6 to rotate 180 degrees. The system allows the workpiece to switch between a standby position and a working position spanning above the workpiece. An additional base plate 2 is provided on one side surface of the base plate 1. An adjustment plate 6 is provided on the upper surface of the additional base plate 2. An adjustment groove 41 is provided on the upper surface of the adjustment plate 6. Two adjustment meshing plates 42 are provided inside the adjustment groove 41. A side position motor 44 is provided on one side surface of the adjustment plate 6. A bidirectional screw 43 is provided on the output end of the side position motor 44. The bidirectional screw 43 meshes with the two adjustment meshing plates 42. A small rotating shaft 39 is also provided on the upper surface of the additional connecting block 7. A secondary detection camera 40 is provided on the upper surface of the small rotating shaft 39, thereby scanning the workpiece from the oblique side to obtain the side view contour and height information, which together with the top view construct the complete point cloud data of the workpiece in three-dimensional space. The adjustment component is used to adjust the position of the H-beam after it is placed on the upper surface of the support worktable 8, thereby assisting the work of the clamping component. After the H-beam is hoisted onto the support worktable 8, the positioning process is immediately started. First, the side detection cameras 34 installed on both sides of the movable gantry 10 quickly scan the workpiece from above to obtain a preliminary image of its end contour. At the same time, the auxiliary detection camera 40 installed on the additional connecting block 7 adjusts its viewing angle under the drive of the small rotating shaft 39 to perform supplementary lighting scanning on the workpiece from the oblique side to obtain side contour data. The multi-view image data is synchronously transmitted to the image processing unit. Through triangulation and contour fitting algorithms, the positional deviation of the workpiece relative to the theoretical center line of the support worktable 8 in the horizontal plane is calculated in real time. If the deviation value exceeds the allowable tolerance, the control system drives the adjustment component to perform a correction action. First, the drive shaft 38 is started, driving the adjustment plate 6 to rotate 180 degrees, flipping it from the standby position to the working position, spanning across Above the workpiece, the side motor 44 starts, driving the bidirectional screw 43 to rotate. The two adjusting plates 42, which mesh with the left and right threaded sections of the bidirectional screw 43 respectively, generate linear motion in the adjusting groove 41. The inner side of the adjusting plates 42 is designed with guide slopes or flexible pads. During the opposite movement, they gently contact and clamp the workpiece from both sides of the web. As the side motor 44 continues to run, the two adjusting plates 42, while clamping the workpiece, will push the workpiece to slide on the sliding strip 26 of the supporting worktable 8 (at this time, the sliding strip 26 is in an unlocked state) until the real-time feedback of the image processing system shows that the center line of the workpiece coincides with the theoretical baseline, and the position deviation is eliminated. During the entire push-alignment process, the auxiliary detection camera 40 continuously performs position tracking and monitoring. After positioning is completed, the side motor 44 stops, and the adjusting plates 42 maintain a light clamping state on the workpiece to help maintain the position. The drive shaft 38 can rotate in the opposite direction to move the adjusting plate 6 back to its original position.

[0020] The working principle of this invention is: When this equipment is working, the initial positioning is first performed by the adjustment component. The side detection camera 34 and the auxiliary detection camera 40 scan the H-beam placed on the support worktable 8 to detect its position deviation. If the deviation is too large, the drive shaft 38 drives the adjustment plate 6 to rotate above the workpiece. The side position motor 44 drives the bidirectional screw 43 to rotate, which drives the two adjustment meshing plates 42 to move towards each other, pushing the workpiece to slide on the sliding plate 26 until its center line is aligned with the theoretical reference line. After positioning is completed, the bearing component is activated to create conditions for angle correction. Multiple telescopic motors 31 in the central storage box 29 synchronously lift the central bearing plate 30, which lifts the web of the H-shaped steel and transfers the main weight of the workpiece, thereby greatly reducing the pressure of the two side wings on the sliding strip 26. At the same time, the small motor 28 drives the clamping restriction plate 27 to rotate and lift, releasing the lock on the sliding strip 26, allowing it to slide with low resistance in the sliding slot 24. Next, the clamping plate component performs adaptive clamping and dynamic correction. The hydraulic rod 11 pushes the force-bearing connecting frame 14 to bring the side clamping plate 9 closer to the workpiece. Before contact, the electric telescopic rod 47 retracts to disengage the limiting plug 22 from the limiting plug hole 48, allowing the side clamping plate 9 to rotate freely. When the side clamping plate 9 contacts the wing plate which may have an inclination angle, it will adaptively rotate to fully fit the surface. Then, the electric telescopic rod 47 extends and inserts the limiting plug 22 into the limiting plug hole 48 of the limiting toothed disc 45, locking the angle of the side clamping plate 9. Subsequently, the additional welding head 37 melts the pre-welded point at the far end of the workpiece to release the constraint. After both constraints are released, the drive motor 16 starts and drives the meshing screw 20 to move the two reset frame bars 19 toward each other, pushing the offset adjusting connecting rod 21 to reset, thereby forcing the locked rotating shaft 23 and the side clamping plate 9 to rotate, smoothly correcting the wing plate to a vertical position. After correction, the welding head 33 moves along the weld seam to complete high-quality welding.

[0021] The above description is only 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. A welding device based on H-beam steel processing, characterized in that, include: A base plate has sliding frames on both sides, each containing an electric sliding trolley. The upper surface of each electric sliding trolley has a movable gantry, and the upper surface of the movable gantry has two movable welding heads. An auxiliary mechanism is also provided on the upper surface of the base plate. This auxiliary mechanism includes a clamping assembly, which comprises a clamping plate component and a load-bearing component. The clamping plate component includes a processing worktable disposed on the upper surface of the base plate. Side fixing plates are provided on both sides of the upper surface of the processing worktable. Multiple hydraulic push rods are provided on one side surface of each side fixing plate. A force-bearing connecting frame is provided at the end of the output shaft of each hydraulic push rod, and a supporting slide is provided on the bottom surface of the force-bearing connecting frame. The supporting component includes: a supporting worktable, which is located at the center of the upper surface of the processing worktable. Sliding slots are provided on both sides of the upper surface of the supporting worktable. Multiple limiting protrusions are provided on the bottom surface of the sliding slots. Sliding slides are provided inside the sliding slots.

2. The welding device based on H-beam processing according to claim 1, characterized in that: Both ends of the force-bearing connecting frame are provided with connecting side plates. A connecting collar is provided on one side surface of the connecting side plate. Connecting uprights are provided on both the upper and lower surfaces of the connecting collar. A limiting upright is provided on the upper surface of the connecting upright. A sliding slot is provided at the center of the limiting upright. A reset rack is provided inside the sliding slot.

3. The welding device based on H-beam processing according to claim 2, characterized in that: A drive motor is also provided on one side surface of the connecting frame. A meshing screw is provided on the output end of the drive motor. The meshing screw meshes with the center of the reset frame bar. A rotating shaft is provided between the two connecting collars. Adjustment connecting rods are provided on both the upper and lower surfaces of the rotating shaft. A side clamping plate is provided on one side surface of the rotating shaft.

4. The welding device based on H-beam processing according to claim 3, characterized in that: Both ends of the rotating shaft are provided with toothed holes, and a limiting toothed disc is provided inside the toothed holes. A limiting plug hole is provided on one side surface of the limiting toothed disc. A small auxiliary frame is provided on one side surface of the connecting collar. An electric telescopic rod is provided at the center of the small auxiliary frame. A limiting plug is provided at the end of the output shaft of the electric telescopic rod.

5. The welding device based on H-beam processing according to claim 1, characterized in that: Two clamping and limiting plates are provided at both ends of the bearing worktable. Two small motors are provided at both ends of the bearing worktable. The output shafts of the small motors mesh with the clamping and limiting plates. A central storage box is provided at the center of the upper surface of the bearing worktable. Multiple telescopic motors are provided inside the central storage box. A central bearing plate is provided at the end of the output shaft of the telescopic motor.

6. The welding device based on H-beam processing according to claim 1, characterized in that: The auxiliary mechanism also includes a positioning component, which includes two side detection cameras, each of which is respectively disposed on one end surface of the movable gantry. Both sides of the movable gantry are provided with electric rotating shafts, one side surface of each electric rotating shaft is provided with a rotating platform, and one side surface of each rotating platform is provided with an additional welding head.

7. A welding device based on H-beam processing according to claim 6, characterized in that: An additional connecting block is provided on the upper surface of the base plate, a drive electric shaft is provided on the upper surface of the additional connecting block, an adjustment plate is provided on one side surface of the drive electric shaft, an additional base plate is provided on one side surface of the base plate, and the adjustment plate is provided on the upper surface of the additional base plate.

8. A welding device based on H-beam processing according to claim 7, characterized in that: The upper surface of the adjustment plate is provided with an adjustment groove, and two adjustment meshing plates are arranged inside the adjustment groove. A side position motor is provided on one side surface of the adjustment plate, and a bidirectional screw is provided on the output end of the side position motor. The bidirectional screw meshes with the two adjustment meshing plates. A small rotating shaft is also provided on the upper surface of the additional connecting block, and a secondary detection camera is provided on the upper surface of the small rotating shaft.

Images