A metal welding equipment

Abstract

This utility model discloses a metal material welding device, relating to the field of welding equipment technology. The device includes a processing platform with a lifting welding mechanism on one side. Two U-shaped seats are slidably fitted on the upper side of the processing platform, and a drive assembly corresponding to the two U-shaped seats is provided on the platform. Guide seats are installed on the inner sides of the two U-shaped seats, and isosceles trapezoidal blocks are slidably fitted on the outer sides of the two guide seats. A triangular block is located on the lower side of each isosceles trapezoidal block, and a first rubber wheel is rotatably fitted on its top. This utility model controls the two U-shaped seats to move closer or further apart through the drive assembly, facilitating the automated and precise docking and position holding of two metal materials, improving the convenience of metal material welding. The guide seats constrain the displacement direction of the isosceles trapezoidal blocks, and in conjunction with the extrusion assembly and the triangular block, force the isosceles trapezoidal blocks to push the first rubber wheel upwards.

Description

Technical Field

[0001] This utility model belongs to the field of welding equipment, specifically, it relates to a welding equipment for metal materials. Background Technology

[0002] Metallic materials refer to materials with properties such as luster, ductility, electrical conductivity, and thermal conductivity. Welding equipment is often used in the processing of metal pipe fittings to weld and fix them together.

[0003] Chinese Patent No. CN220863165U discloses a metal material welding device, comprising: a welding platform, a motor and a fixed block connected to the bottom of the welding platform, a lead screw at the output end of the motor, a lead screw sleeve threaded onto the lead screw, a sliding block connected to the top of the lead screw sleeve, a sliding plate connected to the top of the sliding block, a fixed plate connected to the welding platform, a rotating rod one on the sliding plate, a worm gear connected to the fixed plate, a handle connected to one end of the worm gear, a worm wheel meshing with the worm gear above the worm gear, a rotating rod two connected to one side of the worm wheel, a fixed seat connected to one end of both rotating rod one and rotating rod two, a clamping assembly on the fixed seat, a right-angle plate connected to the welding platform, a welding machine on the top of the right-angle plate, and a welding torch connected to the welding machine.

[0004] The metal welding equipment disclosed in this application uses a knob to rotate a screw to push a clamping block downwards, which then engages with a fixed seat to clamp metal pipes. However, because the curvature of the inner wall of the fixed seat and the clamping block is fixed and cannot be easily replaced or adjusted, the applicable range is limited, and it is difficult to stably clamp metal pipes of different diameters. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a metal material welding device, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A metal welding device includes: a processing platform, a plurality of support legs mounted on the underside of the processing platform, a lifting welding mechanism on one side of the processing platform, two U-shaped seats slidingly fitted on the upper side of the processing platform, and a drive component corresponding to the two U-shaped seats on the processing platform;

[0008] Two U-shaped seats are equipped with guide seats on their inner sides. Two isosceles trapezoidal blocks are slidably fitted on their outer sides. A triangular block is provided on the lower side of the isosceles trapezoidal block and a first rubber wheel is rotatably fitted on the top. L-shaped rods are elastically rotatably fitted on the upper parts of both sides of the inner wall of the U-shaped seat. A second rubber wheel is rotatably fitted on the upper part of the L-shaped rod. The second rubber wheel is located above the first rubber wheel. The upper part of the isosceles trapezoidal block is located between the two L-shaped rods. An extrusion assembly corresponding to the triangular block is provided on the lower part of the U-shaped seat.

[0009] Optionally, the lifting welding mechanism includes a support plate, a lifting plate, and a welding machine. The lifting plate is installed around the welding machine, and a welding gun is installed at the bottom of the welding machine. The welding gun is located between two U-shaped seats. The lower part of the support plate is installed on one side of the processing platform. A first slide groove is provided on one side of the support plate. A first motor is installed on the lower side of the first slide groove. The output shaft of the first motor is fixedly connected to a first screw. A first slider with a threaded fit around the first screw is installed on one side of the lifting plate. The first slider slides in the first slide groove. A round hole is provided on the upper side of the first slide groove, and the upper end of the first screw is located in the round hole.

[0010] Optionally, the drive assembly includes a second motor mounted on one side of the processing platform, the output shaft of the second motor being fixedly connected to a bidirectional lead screw, a second slide groove being provided on the upper side of the processing platform, the bidirectional lead screw passing laterally through the second slide groove, and a second slider threaded around the bidirectional lead screw being mounted on the lower side of the U-shaped seat, the second slider slidingly engaging within the second slide groove.

[0011] Optionally, the extrusion assembly includes a third motor mounted on one side of the U-shaped seat, with a second screw fixedly connected to the output shaft of the third motor. An extrusion block is slidably fitted on the lower side of the inner wall of the U-shaped seat, corresponding to a triangular block. A nut block threaded into the periphery of the second screw is mounted on one side of the extrusion block. A bearing seat is mounted on one side of the U-shaped seat, with the end of the second screw away from the third motor rotatably fitted in the bearing seat. A first T-shaped channel is provided on the lower side of the inner wall of the U-shaped seat, and a first T-shaped block slidably fitted in the first T-shaped channel is provided on the lower side of the extrusion block.

[0012] Optionally, a second T-shaped channel is provided on one side of the guide seat, and a second T-shaped block that slides within the second T-shaped channel is installed on the lower part of one side of the isosceles trapezoidal block.

[0013] Optionally, a U-shaped frame is installed on the upper side of the isosceles trapezoidal block, a fourth motor is installed on one side of the U-shaped frame, the output shaft of the fourth motor is fixedly connected to a shaft rod, the shaft rod passes through the U-shaped frame laterally, a first rubber wheel is installed around the shaft rod, and the lower part of the first rubber wheel is located inside the U-shaped frame.

[0014] Optionally, extension plates are provided on the upper part of both sides of the inner wall of the U-shaped seat, the corner of the L-shaped rod is hinged to one side of the extension plate, a convex plate is provided on the lower part of one side of the L-shaped rod, a spring is installed between the two convex plates, the fourth motor is located above the spring, and the isosceles trapezoidal block is located between the spring and the guide seat.

[0015] Optionally, a roller is rotatably fitted on the lower part of the side of the L-shaped rod away from the convex plate, and an isosceles trapezoidal block is located between the two rollers. The rollers are attached to the inclined surface of the isosceles trapezoidal block. A rod body is provided on both the upper and lower parts of one side of the L-shaped rod, and a bearing is installed around the rod body. The second rubber wheel and the roller are respectively installed around the corresponding bearing.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0017] The drive assembly controls the two U-shaped seats to move closer or further apart, facilitating the automated and precise docking and positioning of two metal materials, thus improving the convenience of metal welding. The guide seat constrains the displacement direction of the isosceles trapezoidal block, and in conjunction with the extrusion assembly and triangular block, it forces the isosceles trapezoidal block to push the first rubber wheel upward, while simultaneously extruding and rotating the lower part of the two L-shaped rods, thus bringing the first rubber wheel and the two second rubber wheels closer together. This allows the device to be adapted to the rapid clamping and release of metal materials of various diameters, improving the device's adaptability and clamping efficiency.

[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure;

[0021] Figure 2 This is a schematic diagram of a U-shaped frame structure;

[0022] Figure 3 This is a schematic diagram of the lifting and welding mechanism.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] Processing platform 1, support leg 2, support plate 3, first motor 4, first screw 5, first slider 6, lifting plate 7, welding machine 8, welding gun 9, second motor 10, double-acting lead screw 11, second slider 12, U-shaped seat 13, triangular block 14, isosceles trapezoidal block 15, first rubber wheel 16, L-shaped rod 17, second rubber wheel 18, extrusion block 19, third motor 20, second screw 21, guide seat 22.

[0025] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] In the field of metal processing, welding equipment plays a crucial role. Its core function is to permanently join disparate metal parts through localized heating, pressurization, or a combination of both. With the development of industrial manufacturing, the types of metal welding equipment have become increasingly diverse, and their applications are extremely wide-ranging, covering numerous fields from large-scale building steel structures, shipbuilding, pressure vessels, and oil and gas pipeline laying to automobile body assembly and precision instrument parts joining. Depending on the welding process, common equipment types include arc welding equipment (such as manual arc welding machines, submerged arc welding machines, and gas shielded welding machines such as MIG / MAG and TIG welding machines), resistance welding equipment (such as spot welding machines, seam welding machines, and butt welding machines), laser welding equipment, plasma welding equipment, and friction welding equipment.

[0029] Although these devices differ in their technological principles, they typically include several basic functional modules: a frame or work platform providing stable support and positioning; an actuator (such as a lifting or translating device) to achieve precise position control of the welding torch or electrode; a clamping system for fixing the workpiece to be welded; and a core power supply and control system to provide welding energy and control. Among these, the clamping system is particularly critical for ensuring welding quality. In welding cylindrical metal materials such as pipes and bars, stable and reliable clamping is even more important, as it needs to overcome thermal deformation and stress during the welding process to ensure butt joint accuracy.

[0030] Traditional metal welding equipment, especially for butt welding of pipes or bars, employs a relatively straightforward design for its clamping mechanism. A common structure involves a fixed fixture and a movable fixture mounted on a robust base (or machining platform). The movable fixture typically moves linearly via a manual or motor-driven transmission mechanism (such as a lead screw and nut pair, or a rack and pinion) to clamp and release the workpiece. To accommodate workpieces of different diameters, the movable fixture may be equipped with a movable clamping block (a V-block or a pressure block with an arc surface). Adjusting the lead screw by rotating a handle or knob moves the clamping block towards the fixed fixture, where it interacts with the pre-set arc surface within the fixed fixture to clamp the workpiece. The arc surface dimensions of the fixed fixture are usually fixed, or only a few interchangeable modules of various sizes are available. This design provides sufficient stability when clamping workpieces within a specific size range.

[0031] In terms of workflow, the operator first places the two pieces of metal to be welded in predetermined positions on the fixed and movable clamps, respectively. Manually or via a drive mechanism (such as rotating a handwheel to start a lead screw), the movable clamp and its clamping blocks move towards the fixed clamp until the workpieces are securely clamped. Then, the operator operates the welding torch or starts an automatic welding program, moving the torch to the butt joint of the two workpieces for welding. After welding, the clamps are released, and the workpieces are removed. For more complex welding requirements, such as circumferential welding where the workpiece angle needs to be adjusted, some equipment integrates a rotating mechanism on the clamps. A motor drives the clamped workpiece to rotate slowly, while the welding torch remains in a fixed position to perform the welding.

[0032] Increased automation is a significant trend in the development of modern welding equipment. Many devices have incorporated motor-driven and control systems to replace cumbersome manual operations. For example, servo motors or stepper motors are used to precisely control the movement of the welding torch along a preset trajectory (such as welding straight lines, arcs, or complex three-dimensional paths), or to control the rotational speed of the workpiece. In workpiece clamping, motor-driven lead screws are commonly used to replace manual knobs, enabling electric control of clamping force. Furthermore, bidirectional lead screw structures used to drive the clamps on both sides to move closer or further apart synchronously can more accurately control the mating position and pressure of the two workpieces to be welded, reducing human error and improving the consistency and efficiency of the connection; these are widely used in automated welding production lines.

[0033] However, with the increasing demand for flexible production in the manufacturing industry—requiring the same equipment to quickly adapt to the processing of products of different specifications—traditional clamping methods have shown certain limitations. Especially when frequently switching between welding metal pipes or bars of different diameters, the process of changing or adjusting the inner arc surface of the clamp to accommodate the new size is often time-consuming, reducing the overall utilization rate and production efficiency of the equipment. Although replaceable clamp designs exist, the replacement process itself requires machine downtime and the management and storage of various specifications of parts. Furthermore, for workpieces with significant diameter differences, clamps with a single arc surface or a limited number of arc surfaces may struggle to provide optimal contact area and clamping force distribution. Too small a contact surface may lead to excessive localized pressure damaging the workpiece surface (especially softer metals or coated workpieces), while too large a gap can affect clamping stability, potentially causing minute displacements during welding and impacting weld quality. Therefore, developing a mechanism that can quickly and automatically adapt to changes in workpiece diameter without frequent component replacement, and provides uniform and reliable clamping force, has been a crucial direction for optimization in the welding equipment field, aiming to improve equipment versatility, clamping efficiency, and welding quality stability.

[0034] Please see Figure 1-3 As shown, this embodiment provides a metal material welding device, including: a processing platform 1, a plurality of support legs 2 installed on the lower side of the processing platform 1, a lifting welding mechanism provided on one side of the processing platform 1, two U-shaped seats 13 slidingly engaged on the upper side of the processing platform 1, and a drive component corresponding to the two U-shaped seats 13 provided on the processing platform 1.

[0035] Two U-shaped seats 13 are each equipped with a guide seat 22 on their inner sides. Two guide seats 22 are each slidably fitted with an isosceles trapezoidal block 15 on their outer sides. The isosceles trapezoidal block 15 is provided with a triangular block 14 on its lower side and a first rubber wheel 16 rotatably fitted on its top. L-shaped rods 17 are elastically rotatably fitted on the upper parts of both sides of the inner wall of the U-shaped seat 13. A second rubber wheel 18 is rotatably fitted on the upper part of the L-shaped rod 17. The second rubber wheel 18 is located above the first rubber wheel 16. The upper part of the isosceles trapezoidal block 15 is located between the two L-shaped rods 17. A pressing component corresponding to the triangular block 14 is provided on the lower part of the U-shaped seat 13.

[0036] One application of this embodiment is as follows: In use, firstly, the two metal materials to be welded are placed on the processing platform 1. Then, one end of the metal material is placed between the first rubber wheel 16 and the two second rubber wheels 18, and the extrusion assembly is activated to extrude the inclined surface of the triangular block 14. The triangular block 14 is pushed by the force to slide the isosceles trapezoidal block 15 and the first rubber wheel 16 upward along the guide seat 22. At the same time, the inclined surfaces on both sides of the isosceles trapezoidal block 15 extrude the lower part of the two L-shaped rods 17 to rotate and open, while the upper part of the L-shaped rods 17 rotates and drives the second rubber wheels 18 to descend and approach the metal material. Thus, the first rubber wheel 16 and the two second rubber wheels 18 are used to clamp and fix the metal material. After both metal materials are clamped and fixed, the drive assembly is controlled to drive the two U-shaped seats 13 to move closer to each other, so that the welding parts of the two metal materials are joined together. Finally, the lifting welding mechanism is activated to weld the two metal materials. After the welding is completed, the welded metal material is removed according to the above operation, and the various structures of the equipment are reset. It should be noted that all electrical devices involved in this application can be powered by batteries or external power sources.

[0037] The drive assembly controls the two U-shaped seats 13 to move closer or further apart, facilitating the automated and precise docking and position holding of two metal materials, thus improving the convenience of metal welding. The guide seat 22 constrains the displacement direction of the isosceles trapezoidal block 15, and cooperates with the extrusion assembly and triangular block 14 to force the isosceles trapezoidal block 15 to push the first rubber wheel 16 upward, while simultaneously extruding and rotating the lower part of the two L-shaped rods 17, thereby bringing the first rubber wheel 16 and the two second rubber wheels 18 closer together. This allows the device to be adapted to the rapid clamping and release of metal materials of various diameters, improving the device's adaptability and clamping efficiency.

[0038] like Figure 1 , 3 As shown, the lifting welding mechanism of this embodiment includes a support plate 3, a lifting plate 7, and a welding machine 8. The lifting plate 7 is installed around the welding machine 8, and a welding torch 9 is installed at the bottom of the welding machine 8. The welding torch 9 is located between two U-shaped seats 13. The lower part of the support plate 3 is installed on one side of the processing platform 1. A first slide groove is provided on one side of the support plate 3. A first motor 4 is installed on the lower side of the first slide groove. A first screw 5 is fixedly connected to the output shaft of the first motor 4. A first slider 6 is installed on one side of the lifting plate 7, which is threaded around the first screw 5. The first slider 6 is slidably engaged in the first slide groove. A round hole is provided on the upper side of the first slide groove. The upper end of the first screw 5 is located in the round hole. The first screw 5 is driven to rotate by the first motor 4, thereby driving the first slider 6 and the lifting plate 7 to rise and fall along the first slide groove, so as to adjust the height position of the welding machine 8 and the welding torch 9 according to the diameter of the metal material.

[0039] like Figure 1 , 2As shown, the drive assembly of this embodiment includes a second motor 10 mounted on one side of the processing platform 1. The output shaft of the second motor 10 is fixedly connected to a bidirectional lead screw 11. A second slide groove is provided on the upper side of the processing platform 1. The bidirectional lead screw 11 passes through the second slide groove laterally. A second slider 12 with a threaded engagement around the bidirectional lead screw 11 is mounted on the lower side of the U-shaped seat 13. The second slider 12 slides in the second slide groove. The second motor 10 drives the bidirectional lead screw 11 to rotate, causing the two second sliders 12 and the U-shaped seat 13 to slide synchronously towards or away from each other along the second slide groove, which facilitates adjusting the distance between them according to the length of the metal material.

[0040] like Figure 2 As shown, the extrusion assembly of this embodiment includes a third motor 20 mounted on one side of the U-shaped seat 13. The output shaft of the third motor 20 is fixedly connected to a second screw 21. An extrusion block 19 is slidably fitted on the lower side of the inner wall of the U-shaped seat 13. The extrusion block 19 corresponds to the triangular block 14. A nut block with a threaded fit around the second screw 21 is mounted on one side of the extrusion block 19. A bearing seat is mounted on one side of the U-shaped seat 13. The end of the second screw 21 away from the third motor 20 is rotatably fitted in the bearing seat. A first T-shaped channel is provided on the lower side of the inner wall of the U-shaped seat 13. A first T-shaped block with a slidable fit in the first T-shaped channel is provided on the lower side of the extrusion block 19. The second screw 21 is driven to rotate by the third motor 20, which drives the nut block and the extrusion block 19 to slide. The extrusion block 19 extrudes the inclined surface of the triangular block 14 to control the upward movement of the isosceles trapezoidal block 15. The stability of the extrusion block 19 during sliding is improved by the cooperation of the first T-shaped channel and the first T-shaped block.

[0041] like Figure 1 As shown, the guide seat 22 in this embodiment is provided with a second T-shaped channel on one side, and a second T-shaped block that slides in the second T-shaped channel is installed on the lower part of one side of the isosceles trapezoidal block 15. The sliding direction and distance of the isosceles trapezoidal block 15 are constrained by the cooperation between the second T-shaped channel and the second T-shaped block, thereby improving the stability of the isosceles trapezoidal block 15 when sliding up and down.

[0042] like Figure 2 As shown, in this embodiment, a U-shaped frame is installed on the upper side of the isosceles trapezoidal block 15, and a fourth motor is installed on one side of the U-shaped frame. The output shaft of the fourth motor is fixedly connected to a shaft rod, which passes through the U-shaped frame laterally. A first rubber wheel 16 is installed around the shaft rod, and the lower part of the first rubber wheel 16 is located inside the U-shaped frame. The shaft rod and the first rubber wheel 16 are driven to rotate by the fourth motor, so that the clamped metal material can be rotated and adjusted in the clamped state, thereby realizing the adjustment of the welding position.

[0043] like Figure 2As shown, in this embodiment, the upper part of both sides of the inner wall of the U-shaped seat 13 is provided with an extension plate. The corner of the L-shaped rod 17 is hinged to one side of the extension plate. The lower part of one side of the L-shaped rod 17 is provided with a protrusion plate. A spring is installed between the two protrusion plates. The fourth motor is located above the spring. The isosceles trapezoidal block 15 is located between the spring and the guide seat 22. The two protrusion plates are connected by the spring, so that the L-shaped rod 17 can be automatically pulled to reset when it is not clamped, which facilitates the rapid release of metal materials.

[0044] like Figure 2 As shown, in this embodiment, the lower part of the L-shaped rod 17 away from the convex plate is rotatably fitted with a roller, and the isosceles trapezoidal block 15 is located between the two rollers. The rollers are attached to the inclined surface of the isosceles trapezoidal block 15. The upper and lower parts of one side of the L-shaped rod 17 are provided with rod bodies, and bearings are installed around the rod bodies. The second rubber wheel 18 and the rollers are respectively installed around the corresponding bearings. By setting the rollers to contact the inclined surface of the isosceles trapezoidal block 15, the friction between the L-shaped rod 17 and the isosceles trapezoidal block 15 is reduced. The bearings reduce the friction between the second rubber wheel 18 and the rollers and the rod body when they rotate.

[0045] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A metal material welding device, characterized in that, include: The processing platform (1) is provided with a lifting welding mechanism on one side. There are two U-shaped seats (13) slidingly fitted on the upper side of the processing platform (1). The processing platform (1) is provided with a drive component corresponding to the two U-shaped seats (13). Two U-shaped seats (13) are equipped with guide seats (22) on their inner sides. Two guide seats (22) are slidably fitted with isosceles trapezoidal blocks (15) on their outer sides. Triangular blocks (14) are provided on the lower side of the isosceles trapezoidal blocks (15), and a first rubber wheel (16) is rotatably fitted on the top. L-shaped rods (17) are elastically rotatably fitted on the upper part of both sides of the inner wall of the U-shaped seat (13). A second rubber wheel (18) is rotatably fitted on the upper part of the L-shaped rods (17). The upper part of the isosceles trapezoidal blocks (15) is located between the two L-shaped rods (17). A pressing component corresponding to the triangular blocks (14) is provided on the lower part of the U-shaped seat (13).

2. The metal material welding equipment according to claim 1, characterized in that, The lifting welding mechanism includes a support plate (3), a lifting plate (7), and a welding machine (8). The lifting plate (7) is installed on the periphery of the welding machine (8). A welding gun (9) is installed at the bottom of the welding machine (8). The lower part of the support plate (3) is installed on one side of the processing platform (1). A first slide groove is provided on one side of the support plate (3). A first motor (4) is installed on the lower side of the first slide groove. The output shaft of the first motor (4) is fixedly connected to a first screw (5). A first slider (6) with a threaded fit is installed on one side of the lifting plate (7) around the first screw (5).

3. The metal material welding equipment according to claim 1, characterized in that, The drive assembly includes a second motor (10) mounted on one side of the processing platform (1). The output shaft of the second motor (10) is fixedly connected to a bidirectional lead screw (11). A second slide groove is provided on the upper side of the processing platform (1). The bidirectional lead screw (11) passes through the second slide groove laterally. A second slider (12) with a threaded fit around the bidirectional lead screw (11) is mounted on the lower side of the U-shaped seat (13).

4. The metal material welding equipment according to claim 1, characterized in that, The extrusion assembly includes a third motor (20) mounted on one side of the U-shaped seat (13), the output shaft of the third motor (20) is fixedly connected to a second screw (21), an extrusion block (19) is slidably fitted on the lower side of the inner wall of the U-shaped seat (13), the extrusion block (19) corresponds to the triangular block (14), and a nut block threadedly fitted on one side of the extrusion block (19) is mounted on the periphery of the second screw (21).

5. The metal material welding equipment according to claim 1, characterized in that, A second T-shaped channel is provided on one side of the guide seat (22), and a second T-shaped block that slides in the second T-shaped channel is installed on the lower part of one side of the isosceles trapezoidal block (15).

6. The metal material welding equipment according to claim 1, characterized in that, A U-shaped frame is installed on the upper side of the isosceles trapezoidal block (15), a fourth motor is installed on one side of the U-shaped frame, the output shaft of the fourth motor is fixedly connected to a shaft rod, the shaft rod passes through the U-shaped frame laterally, and the first rubber wheel (16) is installed on the periphery of the shaft rod.

7. The metal material welding equipment according to claim 1, characterized in that, The upper part of both sides of the inner wall of the U-shaped seat (13) is provided with an extension plate. The corner of the L-shaped rod (17) is hinged to one side of the extension plate. The lower part of one side of the L-shaped rod (17) is provided with a convex plate, and a spring is installed between the two convex plates.

8. The metal material welding equipment according to claim 7, characterized in that, The lower part of the L-shaped rod (17) away from the convex plate is fitted with a roller, and the isosceles trapezoidal block (15) is located between the two rollers.

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