A splicing and welding integrated machine suitable for splicing and welding of various types of profiles

Abstract

The present application belongs to the technical field of welding equipment, and discloses a tailor-welding integrated machine suitable for splicing and welding of various types of profiles, comprising a V-shaped splicing groove, an upper opening belt turnover frame, a welding device and a control system. The V-shaped splicing groove utilizes its own shape to make the round pipe, square pipe, H-shaped steel slide and center under the gravity; the upper opening belt turnover frame adopts a flexible belt to form a tensionable open structure, realizing the containment, lifting and turnover of different cross-section profiles; the clamping and aligning device can switch according to the profile type, and can limit the swing when rotating for the round pipe, and can automatically align the welding surface for the square pipe / H-shaped steel. The present application can be compatible with end-to-end splicing and welding of various profiles, can realize continuous ring welding of round pipes, and can realize indexing multi-surface welding of square pipes / H-shaped steel, and has the advantages of strong universality, high welding precision and high changeover efficiency.

Description

Technical Field

[0001] This invention belongs to the field of welding equipment technology, and in particular relates to an integrated welding machine suitable for splicing and welding various types of profiles. Background Technology

[0002] In the field of metal structure manufacturing, especially in the processing of steel structures (such as H-beams, rectangular tubes, and round tubes), it is often necessary to weld two sections of the same specification into a single unit to obtain the required length of the workpiece. Currently, most of the processing is done manually, and the existing welding equipment typically suffers from the following problems: 1. Poor versatility: Specialized flipping, clamping, and welding devices are often required for profiles with different cross-sectional shapes, such as round tubes and rectangular tubes. A single piece of equipment is difficult to be compatible with multiple profiles, resulting in high equipment investment costs and low production changeover efficiency for manufacturers.

[0003] 2. Difficulty in flipping and positioning: For heavy or long profiles, flipping is required during the welding process to complete multi-faceted or circumferential welds. Traditional robotic arms or flipping mechanisms are complex in structure and sensitive to the shape of the profiles, which can easily cause the profiles to slip, collide, or become inaccurately positioned during the flipping process.

[0004] 3. It is difficult to balance welding accuracy and efficiency: manual welding has low accuracy and poor efficiency; in automated welding, how to achieve rapid alignment, stable clamping and precise control of welding trajectory of profiles (especially circumferential welding of round tubes and multi-sided welding of square and rectangular tubes) is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] In view of the problems existing in the prior art, the purpose of this invention is to provide an integrated splicing and welding machine applicable to splicing and welding of various types of profiles.

[0006] To solve the above problems, the present invention adopts the following technical solution: A welding machine suitable for splicing and welding various types of profiles includes a V-shaped splicing groove set on the ground, an upper-opening belt turning frame, a welding device, and a control system.

[0007] The V-shaped splicing groove, with its opening facing upwards, is fixed to the ground by a bracket and used for supporting and centering the profiles. Its working principle is as follows: two sections of the same specification profile to be welded slide down into the V-shaped splicing groove under their own weight and abut against each other. This sliding process automatically aligns and centers the ends of the two profiles, regardless of whether they are round pipes, rectangular pipes, or H-beams, eliminating the need for repeated manual adjustments. This significantly reduces the time cost and operational difficulty of loading and centering, providing precise initial positioning for subsequent spot welding and ensuring the foundation for welding quality.

[0008] The welding device is used to spot weld and fix the ends of two profile sections that need to be welded together, as well as to perform full welding. Spot welding can be done manually by a handheld spot welding unit, while full welding is done automatically by an automatic full welding unit. Spot welding temporarily connects the two profile sections into a whole, preventing misalignment during the subsequent full welding process.

[0009] At least two upper-opening belt-driven tilting frames are spaced apart from multiple V-shaped splicing grooves. The center of gravity of the two profile sections, which are spot-welded together, is located between the upper-opening belt-driven tilting frames to ensure stability during lifting. The upper-opening belt-driven tilting frames are used to lift and tilt the spot-welded profiles. Their specific structure includes two support plates with upward-facing U-shaped openings. The two support plates are aligned with each other, and between them are two support wheels, several ordinary wheels, a tension wheel, and a linear actuator. The two support wheels are located on either side of the top of the U-shaped opening, and an annular belt is wound around the two support wheels, several ordinary wheels, and the tension wheel.

[0010] The top of the annular belt, located between the two support pulleys, sags under its own weight, forming an open "soft pocket" structure. In the standby state, the bottom of the belt opening is lower than the V-shaped splicing groove. This structure is not dependent on the specific cross-sectional shape of the profile; whether it is the arc of a round tube, the right angle of a square or rectangular tube, or the complex contour of an H-beam, the U-shaped opening can be easily inserted from above and placed on the drooping belt.

[0011] The tensioning wheel is slidably connected between the two support plates. One end of the linear actuator is hinged to the support plate, and the other end is connected to the tensioning wheel. When the linear actuator extends or retracts, it drives the tensioning wheel to slide, thereby pulling the annular belt and tightening the annular belt between the two support wheels. During this process, the belt gradually tightens from a "soft" state, smoothly lifting the profile placed on it and separating it from the V-shaped splicing groove. The lifting action is gentle and uniform, and because the belt is in surface contact with the profile, it will not damage the profile surface, while avoiding the risk of the profile slipping that may occur with rigid lifting.

[0012] A motor A is connected to any of the support pulleys, ordinary pulleys, or tension pulleys to drive its rotation. Motor A drives the belt to rotate cyclically, and the friction between the belt and the profile causes the profile to rotate around its own axis. Due to the flexible wrapping characteristics of the belt, even non-circular cross-section square or rectangular tubes or H-beams can be reliably rotated. This provides a unified rotational force for circumferential welding of round tubes (continuous rotation) and multi-face welding of square or rectangular tubes / H-beams (indexing rotation).

[0013] The control system is electrically connected to the welding device, linear actuator, and motor A. The control system coordinates the timing of the actions of each actuator, including: controlling the extension and retraction of the linear actuator to lift and lower the profile; controlling the start, stop, speed, and angle of motor A to achieve continuous rotation or indexing of the profile; and controlling the motion trajectory and welding parameters of the welding device to achieve automatic and precise welding of the weld seam. Through integrated control, the automation level of the equipment and welding consistency are significantly improved.

[0014] Preferably, the linear actuator is a pneumatic cylinder, a hydraulic cylinder, or an electric actuator. When the linear actuator is a pneumatic cylinder or a hydraulic cylinder, the control system is electrically connected to the solenoid valve on the corresponding pipeline, and controls the opening and closing of the air / oil circuit through the solenoid valve; when the linear actuator is an electric actuator, the control system is directly electrically connected to the electric actuator to control its extension and retraction.

[0015] As a further improvement, this integrated welding machine also includes a clamping and aligning device. This device includes a track, which is set on the floor perpendicular to the extension direction of the V-shaped splicing groove. Two opposing clamping arms are slidably connected to the track, with their opposing surfaces forming a vertical plane. A motor B is mounted at one end of the track, and a bidirectional lead screw with positive and negative threads is driven onto the output shaft of motor B. The two clamping arms are respectively connected to the positive and negative threads at both ends of the bidirectional lead screw. The control system is electrically connected to motor B. This device performs a dual function depending on the welding object, and its principle and effects are as follows: 1. Primary Function: Anti-swaying during round pipe welding: When welding a round pipe, the clamping arms move towards each other under the drive of motor B, gently clamping the pipe with appropriate force (or leaving a small gap). The principle is that when the round pipe rotates under the drive of a belt for circumferential welding, radial sway may occur due to the pipe's own curvature or the unevenness of the belt drive. The radial constraint force provided by the clamping arms precisely counteracts this swaying tendency without hindering the rotational movement of the round pipe around its axis. This ensures that the relative position of the welding torch and the weld seam of the round pipe remains stable throughout the entire rotation, thereby significantly improving the accuracy and consistency of the circumferential weld.

[0016] 2. Second Function: Automatic Alignment During Welding of Rectangular Tubes / H-Beams: When welding rectangular tubes or H-beams, the clamping arms move towards each other with a large clamping force. The principle is as follows: the side of the rectangular tube or H-beam is a plane. After the vertical plane of the clamping arm contacts it, under the continuously increasing clamping force, the profile is forced to rotate around its axis until one side is completely in contact with the plane of the clamping arm. At this point, the opposite side (i.e., the surface to be welded) is precisely aligned to a horizontal state (and the center position is fixed). Without manual intervention or additional sensor detection, rapid automatic alignment of the surface to be welded is achieved, providing a precise reference for subsequent linear translation welding of the three-axis module, significantly improving changeover efficiency and welding quality.

[0017] As a preferred structure, the V-shaped groove features an asymmetrical cross-section with one side longer than the other. The longer side is at least equal to the distance between the outermost flanges of the two flanges of the H-beam profile to be welded, and the longer side forms a 41.5° angle with the horizontal plane, while the shorter side forms a 48.5° angle with the horizontal plane. The principle behind this is that the combination of the 41.5° and 48.5° angles allows the profile to be lifted a short distance by the tilting frame, ensuring that its lowermost edge avoids the sidewall of the V-shaped groove during the tilting process. This results in minimal lifting height, avoiding interference between the profile and the V-shaped groove during tilting, reducing the required lifting force on the tilting frame, shortening the lifting stroke, and improving both operational cycle time and safety.

[0018] As a specific implementation, the welding device includes a handheld spot welding unit and an automatic full welding unit. The automatic full welding unit includes a three-axis linear module slide and a welding torch. The welding torch is connected to the three-axis linear module slide, which is fixed to the ground and spans above the V-shaped splicing groove, driving the welding torch to move in three-dimensional space. The control system is electrically connected to the three-axis linear module slide. Its principle is as follows: for circumferential welding of round pipes, the welding torch can be kept stationary while the workpiece rotates via a tilting frame; for multi-sided welding of square / rectangular tubes / H-beams, the welding torch can be controlled to move linearly along the weld direction for welding. After one side is completed, the tilting frame rotates to weld the next side. The effect is that a single welding torch drive system, combined with a tilting frame, can flexibly adapt to both "workpiece rotation, welding torch fixation" and "workpiece fixation, welding torch movement" welding modes, achieving a high degree of equipment integration. Specifically, the welding host machine carries two torches, and the control circuit ensures that each torch is powered. During manual spot welding, the automatic welding torch is not powered; during automatic welding, the manual torch is not powered. Saves one welding machine.

[0019] Furthermore, the handheld spot welding unit is a handheld welding gun, used for manual spot welding pre-fixation, which facilitates manual operation to complete the spot welding pre-fixation.

[0020] Furthermore, the handheld welding torch and the welding torch of the welding device are connected to the same welding machine through a control circuit, saving equipment costs. The control system is electrically connected to the welding machine to control welding parameters and welding torch switching.

[0021] Furthermore, the bottom of the U-shaped opening is lower than the V-shaped groove, ensuring that the profile can completely fall into the bottom of the V-shaped groove before being lifted, thus achieving reliable alignment.

[0022] The beneficial effects of this invention are: Compared with the prior art, the advantages of this invention are: 1. The V-shaped splicing groove uses gravity to achieve universal automatic centering of round tubes, square and rectangular tubes, and H-beams; the top-opening belt turning frame uses the "soft pocket" structure of the flexible belt to accommodate different cross-sectional shapes, achieving multiple uses in one machine and greatly reducing equipment investment costs.

[0023] 2. The clamping device provides anti-sway constraint for round tubes, ensuring the accuracy of circumferential welding; it also provides active alignment for rectangular tubes / H-beams, quickly establishing a horizontal welding benchmark. One device serves two purposes, with an ingenious and efficient design.

[0024] 3. With the help of the three-axis module moving welding gun and the flipping frame to drive the workpiece to rotate, it can realize continuous circumferential welding of round tubes, as well as multi-sided welding of square and rectangular tubes / H-beams, with strong process adaptability.

[0025] 4. The asymmetrical side length and angle design of the V-shaped splicing groove allows the profile to be lifted by a minimum distance to avoid overturning interference, thus reducing the driving power requirement.

[0026] 5. The integrated control system coordinates the actions of all actuators, improving the automation level of the equipment and the consistency of welding.

[0027] 6. The original splicing and welding were two separate processes, which required moving the equipment between the two processes, as well as time and space. The current all-in-one machine only requires one process. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of an integrated welding machine applicable to splicing and welding of various types of profiles according to the present invention; Figure 2 This is a side view of an integrated welding machine applicable to splicing and welding of various types of profiles according to the present invention; Figure 3 This is an exploded view of the components of the upper-opening belt tilting frame in this invention; Figure 4 This is a schematic diagram of the structure of the upper-opening belt turning frame and welding device in this invention (the state of the square and rectangular tube profile when it is lifted by the upper-opening belt turning frame). Figure 5This is a schematic diagram of the structure of the upper-opening belt turning frame and welding device in the present invention (the state of the square and rectangular tube profile when it is turned over by the upper-opening belt turning frame). Figure 6 This is a schematic diagram of the clamping and aligning device in this invention; Figure 7 This is a schematic diagram of the clamping and aligning device in this invention for clamping rectangular tube profiles; Figure 8 This is a schematic diagram of the clamping and aligning device used in this invention to clamp H-beam profiles; Figure 9 This is a schematic diagram of the clamping and aligning device used in this invention to clamp the round tube profile. Figure 10 This is a schematic diagram of the rectangular tube profile placed on the V-shaped splicing groove in this invention; Figure 11 This is a schematic diagram of the structure in which the H-shaped steel profile is placed on the V-shaped splicing groove in this invention; Figure 12 This is a schematic diagram of the structure of the circular tube profile placed on the V-shaped splicing groove in this invention; Figure 13 This is a schematic diagram of the control circuit between the welding machine, the handheld welding torch, and the welding torch.

[0029] In the diagram: 1. Floor; 2. V-shaped splicing groove; 3. Top-opening belt tilting frame; 31. Support plate; 311. U-shaped opening; 32. Support wheel; 33. Ordinary wheel; 34. Tensioning wheel; 35. Circular belt; 36. Linear driver; 37. Motor A; 4. Welding device; 41. Three-axis linear module slide; 42. Welding torch; 5. Clamping and aligning device; 51. Track; 52. Clamping arm; 53. Motor B; 54. Bidirectional lead screw with positive and negative threads. Detailed Implementation

[0030] The following will refer to the accompanying drawings in the embodiments of the present invention (with reference to...). Figures 1-13 Taking the embodiments of the present invention as an example, the technical solutions in the embodiments of the present invention will be clearly and completely described. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1: Overall Structure and Main Components of the Equipment like Figure 1-2 As shown, the present invention provides an integrated welding machine suitable for splicing and welding various types of profiles, comprising components arranged sequentially or at intervals on the floor 1: V-shaped splicing groove 2: Used to support and center the profile.

[0032] Welding device 4: includes a handheld spot welding unit (for spot welding pre-fixation) and an automatic full welding unit (for automatic full welding). The automatic full welding unit consists of a three-axis linear module slide 41 and a welding torch 42, spanning above the V-shaped splicing groove 2.

[0033] Top-opening belt-driven tilting frame 3: At least two frames are provided for lifting and tilting the spot-welded profiles. The positions of the two tilting frames 3 are arranged according to the center of gravity of the two profile sections that are joined together after spot welding, ensuring that the center of gravity is located between the two sections and guaranteeing stable lifting.

[0034] Clamping and straightening device 5: It has dual functions of clamping and anti-swaying and automatic straightening.

[0035] Control system: Electrically connected to welding device 4, linear actuator 36, motor A37, and motor B53 respectively. Specifically, the electrical connection to welding device 4 includes electrical connections to the three-axis linear module slide 41 and the welding machine. For linear actuator 36, if a pneumatic or hydraulic cylinder is used, the control system is electrically connected to the solenoid valve on the corresponding pipeline; if an electric actuator is used, it is directly electrically connected to the electric actuator. The control system includes a PLC or industrial controller, a human-machine interface, and drive circuitry, used to coordinate and control the timing of the actions of each actuator.

[0036] The key components are as follows: 1. Top-opening belt tilting frame 3 like Figure 3 As shown, two support plates 31 are arranged in parallel, each with an upward-facing U-shaped opening 311. Under normal conditions, the annular belt 35, wound around the support wheel 32, the ordinary wheel 33, and the tension wheel 34, droops due to its own weight in the portion between the two support wheels 32, forming an open "soft pocket" structure. At this time, the operator can easily insert profiles (whether round tubes, rectangular tubes, or H-beams) from above into the U-shaped opening 311 and place them above the drooping belt 35.

[0037] The control system issues a command to activate the linear actuator 36 (which can be a cylinder, hydraulic cylinder, or electric actuator; if it is a cylinder / hydraulic cylinder, the solenoid valve is controlled to open and close; if it is an electric actuator, its extension and retraction are directly controlled). Its piston rod extends, pushing the tension wheel 34 to slide. As the tension wheel 34 moves, the annular belt 35 is tensioned, and the originally drooping portion is pulled upwards and taut (e.g., ...). Figure 4 (As shown). During this process, belt 35 smoothly lifts the profile, disengaging it from the V-shaped splice groove 2, preparing it for flipping and welding.

[0038] When it needs to be flipped, such as Figure 5As shown, the control system controls motor A37 to drive a support wheel 32, a regular wheel 33, or a tension wheel 34 to rotate, and belt 35 then drives the profile in contact with it to rotate. The control system can control motor A37 to rotate continuously (for circumferential welding of round tubes) or to rotate in increments (for multi-sided welding of square and rectangular tubes / H-beams) as needed. Because belt 35 is flexible and has a covering effect, it can reliably drive profiles with different cross-sectional shapes to rotate.

[0039] 2. V-shaped splicing groove 2 like Figures 10-12 As shown, the V-shaped splicing groove 2 can be designed symmetrically or asymmetrically. Its core function is that after the two profile sections to be welded are placed end-to-end into the V-shaped groove, whether it is a round tube, square or rectangular tube, or H-beam, they will naturally slide down to the bottom of the V-shaped groove under gravity, achieving automatic alignment and centering of the ends of the two profile sections. This design allows operators to perform spot welding pre-fixing without complex adjustments, greatly improving material loading efficiency.

[0040] As a preferred embodiment, the V-groove can be designed asymmetrically: the long side makes an angle of 41.5° with the horizontal plane, and the short side makes an angle of 48.5° with the horizontal plane. This angle design allows the flipping frame to lift the profile by a minimum distance, avoiding interference between the profile and the V-groove during flipping.

[0041] 3. Clamping and aligning device 5 Clamping and aligning device 5 (e.g.) Figure 6 (As shown) is located on one side of the V-shaped splicing groove 2. Its track 51 is set along the X-axis (perpendicular to the length direction of the profile). The motor B53 drives the bidirectional lead screw 54 with positive and negative threads to rotate, which drives the two clamping arms 52 to move synchronously towards each other along the track 51. The control system is electrically connected to the motor B53 and can control the clamping force and action sequence of the clamping arms 52 according to the welding object.

[0042] This device can perform two different functions depending on the object being welded: When welding round pipes, it plays a role in preventing swaying: such as Figure 9 As shown, the two clamping arms 52 gently clamp the round tube, providing appropriate radial constraint force. When the tilting frame 3 drives the round tube to rotate at a constant speed for circumferential welding, the clamping arms 52 effectively limit the radial swing of the round tube, ensuring that the relative position of the welding torch and the weld remains stable, thereby ensuring the accuracy of circumferential welding.

[0043] When welding square and rectangular tubes / H-beams, the automatic alignment function is utilized: such as Figure 7 , Figure 8As shown, the two clamping arms 52 move towards each other with a large clamping force, using their vertical planes to contact the side of the profile. Under the action of the clamping force, the profile is forced to rotate around its axis until a certain side is completely in contact with the vertical plane of the clamping arm 52. At this point, the opposite side (i.e., the surface to be welded) is precisely aligned to a horizontal state. This process is completed quickly and automatically without manual intervention, providing a precise reference for linear welding of the three-axis module.

[0044] 4. Welding device 4 The welding device 4 includes a handheld spot welding unit and an automatic full welding unit. The automatic full welding unit includes a three-axis linear module slide 41 and a welding torch 42. The control system is electrically connected to the three-axis linear module slide 41 and controls the three-axis linear module slide 41 to drive the welding torch 42 to move precisely in the X (lateral / weld direction), Y (longitudinal), and Z (vertical) directions according to the welding process. The handheld spot welding unit is used for manual spot welding. It and the welding torch 42 of the automatic full welding unit are connected to the same welding machine through a control circuit. Its control circuit can be controlled via... Figure 13 The control circuit shown is implemented.

[0045] 5. Control System The control system, as the central hub of the equipment, receives instructions from the operation panel or host computer and coordinates the following actions: (1) Control the extension and retraction of the linear actuator 36 to realize the lifting and lowering of the profile; (2) Control the rotation direction, speed and angle of motor A37 to realize the continuous rotation or indexing flip of the profile; (3) Control motor B53 to clamp and release clamping arm 52, and adjust clamping force according to profile type; (4) Welding control device 4: including controlling the motion trajectory of the three-axis linear module slide 41 and the welding parameters of the welding machine (current, voltage, start and stop, etc.).

[0046] Through the above integrated control, the equipment can automatically complete the entire process from profile lifting, flipping, clamping / aligning to full welding, significantly improving the level of automation and welding consistency.

[0047] Furthermore, the bottom of the U-shaped opening is lower than the V-shaped groove, ensuring that the profile can completely fall into the bottom of the V-shaped groove before being lifted, thus achieving reliable alignment.

[0048] Example 2: Welding process for different profiles (a) Circumferential welding of round pipes: 1. Loading and Alignment: Connect the ends of the two round tubes together and place them on the V-shaped splicing groove 2. Under the action of gravity, the two round tubes will naturally slide down to the bottom of the V-shaped groove, achieving automatic end alignment and centering.

[0049] 2. Spot welding: Manually use a handheld spot welding unit (such as a handheld welding gun) to spot weld 2-3 points at the joint to initially fix the two sections of round pipe into a whole.

[0050] 3. Lifting: The control system starts the linear driver 36 of the upper open belt tilting frame 3, the belt 35 is tensioned, and the spot-welded long round tube is smoothly lifted from the V-shaped splicing groove 2.

[0051] 4. Anti-sway clamping: The control system controls the motor B53 to extend the clamping arm 52 of the clamping and aligning device 5, and gently clamp the round tube with appropriate force to prevent it from swaying radially during rotation.

[0052] 5. Circumferential Seam Welding: The control system controls the three-axis linear module slide 41 to move the welding torch 42, so that the welding torch head reaches and contacts the joint of the round pipe, and then the welding torch 42 remains in a fixed position. At the same time, the control system controls the motor A37 to drive the belt 35 of the tilting frame 3 to rotate, causing the round pipe to rotate at a constant speed for one revolution. During this process, the welding torch 42 completes the full welding of the entire circumferential seam.

[0053] (ii) Multi-sided welding of square and rectangular tubes / H-beams (e.g.) Figure 5 (as shown) 1. Loading and Alignment: Place the two sections of square or rectangular tubes or H-beams end-to-end on the V-shaped splicing groove 2. The profiles will naturally slide down to the bottom of the V-shaped groove under the action of gravity, achieving automatic end alignment and centering.

[0054] 2. Spot welding: Same as above, perform spot welding for pre-fixation.

[0055] 3. Lifting: The control system starts the linear driver 36 of the upper open belt tilting frame 3, the belt 35 is tensioned, and the spot-welded square and rectangular tubes / H-beams are smoothly lifted from the V-shaped splicing groove 2.

[0056] 4. Automatic Alignment: Motor A37 of the upper-opening belt-driven tilting frame 3 drives a support wheel 32, ordinary wheel 33, or tension wheel 34 to rotate. The belt 35 then rotates the square / rectangular tube / H-beam, aligning the first surface to be welded to a horizontal position. Simultaneously, motor B53 drives clamping arms 52 to move towards each other with a large clamping force. Under the action of the clamping force, the workpiece is forcibly aligned, ensuring that the first surface to be welded remains precisely horizontal. (While the clamping arms 52 are clamping and aligning the workpiece, motor A37 can drive the belt 35 to rotate in coordination with the workpiece, preventing the belt 35 from being pulled.)

[0057] 5. Welding the first surface: The three-axis linear module slide 41 drives the welding torch 42 to move at a constant speed along the horizontal weld seam direction (X-axis) to complete the welding of the first weld seam.

[0058] 6. Flipping and Welding Other Surfaces: After the first surface is welded, the clamping arm 52 is released. The belt 35 of the flipping frame 3 flips the workpiece 90°. The clamping arm 52 clamps again, automatically aligning the new top surface. The three-axis linear module slide 41 drives the welding torch 42 to move again, welding the second weld. This process is repeated until all surfaces requiring welding are completed.

[0059] 7. Unloading: After all welds are completed, the belt 35 of the flipping frame 3 is loosened, allowing the workpiece to fall back onto the V-shaped splicing groove 2 and the finished product is removed.

[0060] Through the above structure and process, the present invention realizes high-quality and high-efficiency automated welding of various profiles such as round tubes, square and rectangular tubes, and H-beams on a single machine, which significantly improves the versatility of the equipment and production flexibility.

[0061] 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 welding machine suitable for splicing and welding various types of profiles, characterized in that, include: The V-shaped splicing groove (2), the upper-opening belt turning frame (3), the welding device (4) and the control system are set on the ground (1); The V-shaped splicing groove (2) opens upward and is fixedly arranged on the ground (1) by a bracket for the support and centering of the profile; At least two of the upper-opening belt turning frames (3) are spaced apart from the multiple V-shaped splicing grooves (2); the center of gravity of the two profiles that are spot-welded together is located between the upper-opening belt turning frames (3); the upper-opening belt turning frames (3) are used to lift and turn the profiles after spot welding and fixing, and include two support plates (31), the support plates (31) are provided with upward U-shaped openings (311), the two support plates (31) are aligned with each other, and two support wheels (32), several ordinary wheels (33), a tension wheel (34) and a linear drive (36) are provided between them, the two support wheels (32) are located on both sides of the top of the U-shaped opening (311), and the two support wheels (32) and several ordinary wheels are provided between them. (33) and a tension wheel (34) are wound with an annular belt (35). The top of the annular belt (35) is located between two support wheels (32) and hangs down due to its own weight. The tension wheel (34) is slidably connected between two support plates (31). One end of the linear actuator (36) is hinged to the support plate (31) and the other end is connected to the tension wheel (34). When the linear actuator (36) extends or shortens, it drives the tension wheel (34) to slide, thereby pulling the annular belt (35) and making the annular belt (35) between the two support wheels (32) tensile upward. Any support wheel (32), ordinary wheel (33) or tension wheel (34) is connected to a motor A (37) for driving its rotation. The welding device (4) is used to spot weld and fix the ends of the two profiles that need to be welded together, and to perform full welding. The welding device (4) includes a handheld spot welding unit and an automatic full welding unit. The automatic full welding unit includes a three-axis linear module slide (41) and a welding gun (42). The welding gun (42) is connected to the three-axis linear module slide (41). The three-axis linear module slide (41) is fixed on the ground (1) and spans across the V-shaped splicing groove (2) to drive the welding gun (42) to move. The control system is electrically connected to the three-axis linear module slide (41). The control system is electrically connected to the welding device (4), the linear driver (36), and the motor A (37), respectively. It also includes a clamping and aligning device (5), which includes a track (51). The track (51) is set on the ground (1) perpendicular to the extension direction of the V-shaped splicing groove (2). Two opposing clamping arms (52) are slidably connected on the track (51). The opposing surfaces of the two clamping arms (52) are vertical planes. A motor B (53) is provided at one end of the track (51). A bidirectional screw (54) with positive and negative threads is driven on the output shaft of the motor B. The two clamping arms (52) are respectively connected to the positive and negative threads at both ends of the bidirectional screw (54). The control system is electrically connected to the motor B (53).

2. The integrated welding machine for splicing and welding various types of profiles according to claim 1, characterized in that, The linear actuator (36) is a cylinder, a hydraulic cylinder, or an electric push rod. When the linear actuator (36) is a cylinder or a hydraulic cylinder, the control system is electrically connected to the solenoid valve on the corresponding pipeline. When the linear actuator (36) is an electric push rod, the control system is directly electrically connected to the electric push rod.

3. The integrated welding machine for splicing and welding various types of profiles according to claim 1, characterized in that, The V-shaped splicing groove (2) has a cross-section with one side longer than the other. The length of the longer side is greater than or equal to the distance between the outermost two flanges of the H-shaped steel profile to be welded. The angle between the longer side and the horizontal plane is 41.5°, and the angle between the shorter side and the horizontal plane is 48.5°.

4. The integrated welding machine for splicing and welding various types of profiles according to claim 1, characterized in that, The handheld spot welding unit is a handheld welding gun used for manual spot welding pre-fixation.

5. The integrated welding machine for splicing and welding various types of profiles according to claim 4, characterized in that, The handheld welding torch and welding torch (42) are connected to a welding machine via a control circuit, and the control system is electrically connected to the welding machine.

6. The integrated welding machine for splicing and welding various types of profiles according to claim 1, characterized in that, The bottom of the U-shaped opening (311) is lower than the V-shaped splicing groove (2).

Images