A profile butt-welding device for construction engineering

Abstract

This invention belongs to the field of profile butt welding technology, specifically a profile butt welding device for construction engineering. It includes a worktable and multiple U-shaped grooves on the upper surface of the worktable. Each U-shaped groove has a rotating roller inside for supporting and conveying tubular profiles. A welding device is installed on the upper surface of the worktable. Two sets of grooves are formed on the upper surface of the worktable, with two grooves in each set, arranged in a triangular pattern. Two sets of positioning and docking components are slidably connected to the upper surface of the worktable. This invention solves the problem that existing butt welding devices typically clamp two tubular profiles, but it is difficult to simultaneously push the two profiles closer together for docking during clamping. This results in a situation where, after clamping and positioning the tubular profiles, if the gap between the two profiles is large, the clamps need to be loosened and readjusted, which is not only cumbersome but also affects the efficiency of tubular profile butt welding.

Description

Technical Field

[0001] This invention belongs to the field of profile welding technology, specifically a profile welding device for building engineering. Background Technology

[0002] Profiles refer to solid or hollow straight bars of metal that have been plastically shaped and have a certain cross-sectional shape and size. There are many types of profiles, which are often used in engineering construction, especially tubular profiles, which are one of the essential profiles in building water and gas supply projects. However, the length of tubular profiles is limited when they are processed in one go, so welding equipment is usually used to splice and weld tubular profiles to extend their length.

[0003] A patent with publication number CN115533543B discloses a shearing and welding device that facilitates correction. This device can initially align the steel strip through an alignment baffle, reducing the offset of the steel strip end. The feeding table can provide support for the steel strip to be welded, and the limiting member sliding on the feeding table can limit the movement distance of the clamped steel strip, allowing the operator to control the movement distance of the limiting member to move the end of the steel strip to a suitable position, thereby aligning the steel strip. The guide plate can enable steel strips conveyed at other angles to move quickly along a direction perpendicular to the length of the shearing groove, thereby achieving the alignment effect under the clamping of the first and second limiting baffles, making the cut of the steel strip neater.

[0004] The above-mentioned solution still has some problems in practical application. When the welding work is on tubular profiles, the two tubular profiles to be welded are placed on the workbench. It is necessary to control the two tubular profiles to be butt-jointed in advance, and at the same time, adjust the overall position and angle of each tubular profile so that the two tubular profiles are in a straight line before the welding equipment can be controlled to weld the butt joint of the tubular profiles. This is not only cumbersome to operate, but also affects the efficiency of butt welding of tubular profiles. In particular, if one of the tubular profiles moves after the butt joint is completed, it will affect the butt joint angle, resulting in a lower overall structural strength of the profile after welding, and affecting the service life of the profile.

[0005] Therefore, the present invention provides a profile welding device for building engineering. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a profile welding device for building engineering, including a workbench and multiple U-shaped grooves opened on the upper surface of the workbench, wherein each U-shaped groove has a rotating roller inside for supporting the tubular profile for conveying and moving, a welding device is provided on the upper surface of the workbench, and grooves are symmetrically provided on one side of the workbench of each roller, the two grooves and the roller are arranged in a triangle, and two sets of positioning and docking components are slidably connected to the upper surface of the workbench;

[0008] Furthermore, the two sets of positioning and docking components include two sliding grooves opened on the upper surface of the worktable, wherein two T-shaped sliding rods are slidably connected to the inner cavity of each sliding groove, and a circular slider is slidably arranged on each of the two T-shaped sliding rods. A second clamping column is fixedly connected to the upper end of the circular slider; a rack is installed on one side of the inner wall of the groove, and a gear is fixedly connected to the lower end of the circular slider in the inner cavity of the groove.

[0009] The lower end of the circular slider is slidably connected in the inner cavity of the groove. The T-shaped slide rod drives the circular slider to move closer to each other, so that the second clamping column clamps and positions the tubular profile. At the same time, when the circular slider moves to the rack position, the gear meshes with the rack, and the gear drives the second clamping column to rotate, continuously pushing the two tubular profiles to connect and tighten.

[0010] Preferably, a rack is installed on the inner wall of the groove, and a gear is fixedly connected to the lower end of the circular slider in the inner cavity of the groove, and the gear meshes with the rack.

[0011] Preferably, the upper end of the T-shaped slide rod is rotatably connected to multiple rotating columns, and the upper ends of the multiple rotating columns are fixedly connected to a first clamping column. The lower end of the first clamping column is fixedly connected to a tension spring, and one end of the tension spring is fixedly connected to a sliding plate. The sliding plate is slidably connected to the outside of the rotating columns.

[0012] Preferably, a T-shaped sliding column is slidably connected to the upper end of the first clamping column, and a stop block is fixed to the upper end of the T-shaped sliding column. The surfaces of the stop block and the sliding plate that are close to each other are arranged in a semi-circular arc shape, which can better fit and abut against the surface of the tubular profile.

[0013] Preferably, the inner cavity of the first clamping column is provided with a spring, wherein one end of the spring abuts against the inner wall of the first clamping column, and the other end is fixedly installed with a T-shaped sliding column.

[0014] Preferably, a rotating groove is provided at the bottom of the inner cavity of the slide groove, a driven bevel gear is rotatably connected to the bottom of the inner cavity of the rotating groove, a rotating frame is fixedly connected to the upper end of the driven bevel gear, and a pull rod is rotatably connected to both ends of the rotating frame, with one end of the pull rod rotatably connected to the T-shaped slide rod.

[0015] Preferably, one end of the driven bevel gear passes through the worktable and is meshed with a transmission bevel gear. A rotating shaft is fixedly connected inside the transmission bevel gear. One end of the rotating shaft is fixedly connected to the output shaft of a drive motor, and the drive motor is fixedly installed on the worktable.

[0016] Preferably, a limiting groove is formed in the middle of the upper surface of the workbench, and an auxiliary welding assembly is provided in the inner cavity of the limiting groove. The auxiliary welding assembly includes two sliding frames fixedly installed in the inner cavity of the limiting groove, and four transmission gears are rotatably arranged between the two sliding frames. A semi-circular rotating frame is externally meshed with the transmission gears, and a welder is installed in the inner cavity of the semi-circular rotating frame.

[0017] Preferably, each of the sliding frames has two semi-circular fixed frames fixed to its adjacent surfaces, and the inner cavities of the two semi-circular fixed frames are provided with synchronous motors. The output shaft end of the synchronous motor is fixedly connected to the transmission gear, and the semi-circular rotating frame is rotatably connected to the outside of the semi-circular fixed frames.

[0018] Preferably, the semicircular rotating frame has several toothed blocks on both sides of its outer surface, and the semicircular rotating frame is connected to the transmission gear through the toothed blocks. The semicircular rotating frame is snapped onto the outside of the semicircular fixed frame, so that the semicircular rotating frame will not fall off the outside of the semicircular fixed frame when it rotates.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. The profile welding device for building engineering described in this invention involves placing two tubular profiles on a worktable and simultaneously driving a T-shaped sliding rod to move closer to each other. The T-shaped sliding rod drives a rotating column to move synchronously, which in turn moves a first clamping column to clamp and position the tubular profiles. After the first clamping column clamps the tubular profiles, a tension spring pulls a sliding disc to slide outside the rotating column, thereby lifting the tubular profiles. Simultaneously, a spring spring lifts the T-shaped sliding column into the inner cavity of the first clamping column, causing a stop block to move downwards and abut against the upper part of the tubular profiles. This achieves clamping and positioning of the tubular profiles, ensuring the accuracy of the connection between the two tubular profiles and preventing deviations in the connection.

[0021] 2. The profile welding device for building engineering described in this invention drives the circular sliders to move closer to each other, which in turn drives the gear and rack to mesh and rotate, thereby driving the second clamping column to rotate. During the process of clamping and fixing the tubular profile using the second clamping column, since the second clamping column is provided with rubber teeth, the rubber teeth will deform as the second clamping column moves closer to each other. At the same time, during the rotation of the second clamping column, the two tubular profiles are driven to move closer to each other. Thus, during the clamping and positioning of the two tubular profiles, the two tubular profiles can also be pushed closer to each other to reduce the gap between the butt joints and improve the overall structural strength of the two tubular profiles after welding. Attached Figure Description

[0022] The invention will now be further described with reference to the accompanying drawings.

[0023] Figure 1 This is a schematic diagram of the overall structure of the main view of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the present invention viewed from below;

[0025] Figure 3 This is a schematic diagram of the assembly structure of the positioning and docking component of the present invention;

[0026] Figure 4 This is a partial cross-sectional view of the workbench of the present invention;

[0027] Figure 5 This is a schematic diagram of the internal structure of the groove in the present invention (half-section).

[0028] Figure 6 This is a schematic diagram of the half-section structure of the T-shaped slide bar of the present invention;

[0029] Figure 7 This is a schematic diagram of the assembly structure of the auxiliary welding component of the present invention;

[0030] Figure 8 This is a top view schematic diagram of the overall structure of the welding equipment of the present invention;

[0031] Figure 9 This is a schematic diagram of the operation of the auxiliary welding component of the present invention;

[0032] In the diagram: 1. Workbench; 2. Tubular profile; 3. Limiting groove; 4. Auxiliary welding assembly; 41. Sliding frame; 42. Semi-circular fixed frame; 43. Semi-circular rotating frame; 44. Transmission gear; 5. Positioning and docking assembly; 51. T-shaped slide bar; 52. First clamping column; 53. Cross slide groove; 54. Gear; 55. Second clamping column; 56. Slide groove; 57. Circular slider; 6. Welder; 7. Drive motor; 8. Rotating shaft; 9. Transmission bevel gear; 10. Driven bevel gear; 11. Rotating groove; 12. Rotating frame; 13. Pull rod; 14. Abutment block; 15. T-shaped slide column; 16. Spring; 17. Rotating column; 18. Slide plate; 19. Tension spring; 20. Groove; 21. Rack; 22. Roller; 23. U-shaped groove. Detailed Implementation

[0033] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0034] Example 1

[0035] like Figures 1 to 9As shown in the embodiment of the present invention, a profile welding device for building engineering includes a workbench 1 and a plurality of U-shaped grooves 23 formed on the upper surface of the workbench 1. Each U-shaped groove 23 has a rotating roller 22 inside for lifting the tubular profile 2 for conveying and moving. A welding device 6 is provided on the upper end of the workbench 1. Two sets of grooves 20 are formed on the upper surface of the workbench 1, and there are two grooves in each set. The two grooves 20 are arranged in a triangle. Two sets of positioning and docking components 5 are slidably connected to the upper end of the workbench 1.

[0036] Furthermore, the two sets of positioning and docking components 5 include two slide grooves 56 opened on the upper surface of the workbench 1, wherein two T-shaped slide rods 51 are slidably connected in the inner cavity of each slide groove 56, and a cross slide groove 53 is opened at the upper end of each of the two T-shaped slide rods 51. A circular slider 57 is slidably connected in the inner cavity of the cross slide groove 53, and a second clamping post 55 is fixedly connected to the upper end of the circular slider 57. Rubber tooth blocks are evenly arranged on the outside of the second clamping post 55.

[0037] The lower end of the circular slider 57 is slidably connected in the inner cavity of the groove 20, which can drive the T-shaped slider 51 to move the circular slider 57 closer to each other, and make the circular slider 57 move along the groove 20 to move the second clamping post 55, so that the second clamping post 55 can clamp and position the tubular profile 2, and at the same time push the tubular profile 2 to move closer to each other for docking.

[0038] Specifically, in existing technologies, two tubular profiles to be welded are typically placed on a worktable, and the two tubular profiles are controlled to align with each other. At the same time, the overall position and angle of each tubular profile are adjusted to ensure that the two tubular profiles are in a straight line. This ensures the accuracy of the connection between the two tubular profiles. Then, a welding device is used to weld the connection at the joint. However, since existing welding devices usually clamp the two tubular profiles, it is difficult to simultaneously push the two tubular profiles closer together for connection during the clamping process. As a result, if the gap between the two tubular profiles is large after clamping and positioning, the clamping needs to be loosened and adjusted again. This is not only cumbersome to operate, but also affects the welding efficiency of the tubular profiles.

[0039] This invention places two tubular profiles 2 requiring butt welding on a workbench 1, and simultaneously drives two T-shaped sliding rods 51 to move closer together. This causes the two T-shaped sliding rods 51 to move a circular slider 57, which in turn moves a second clamping post 55 synchronously. The second clamping post 55 then clamps the two tubular profiles 2 and pushes them towards the center, ensuring the accuracy of the butt joint. During the movement of the circular slider 57 closer together, it also slides within the groove 20, further pushing the tubular profiles 2 closer together while being clamped by the second clamping post 55. This ensures a proper gap between the butt joints, preventing deviations and ensuring a larger gap, which would affect the sealing and weld strength after welding. This also ensures uniform stress distribution at the joint, preventing stress concentration and improving the overall structural strength and stability, thus solving the aforementioned problems.

[0040] like Figures 3 to 6 and Figure 8 As shown, a rack 21 is installed on the inner wall of the groove 20, and a gear 54 is fixedly connected to the lower end of the circular slider 57 in the inner cavity of the groove 20, and the gear 54 is meshed with the rack 21.

[0041] Specifically, when the circular sliders 57 move closer together, they drive the gear 54 to move synchronously. Simultaneously, the gear 54 meshes with the rack 21 during its movement, causing the circular sliders 57 to rotate and the second clamping post 55 to rotate. During the process of clamping and fixing the tubular profile 2 using the second clamping post 55, rubber teeth are provided on the outside of the second clamping post 55. As the second clamping post 55 moves closer together, the rubber teeth deform. Simultaneously, during the rotation of the second clamping post 55, the two tubular profiles 2 are driven to move closer together, thus... During the clamping and positioning of the two tubular profiles 2, it can also push the two tubular profiles 2 closer to each other to reduce the gap between them, thereby improving the overall structural strength of the two tubular profiles 2 after welding. This solves the problem that in existing profile welding devices used in construction engineering, if the welding position and gap between the tubular profiles are not adjusted before welding, it will be impossible to modify or adjust them after welding. Furthermore, if there is a deviation in the welding angle of the tubular profiles or a large welding gap, it will result in low overall structural strength of the welded tubular profiles, making it difficult to meet the strength standard quality.

[0042] like Figure 3 and Figure 6As shown, the upper end of the T-shaped slide bar 51 is rotatably connected to multiple rotating columns 17, and the upper end of the multiple rotating columns 17 is fixedly connected to a first clamping column 52. The lower end of the first clamping column 52 is fixedly connected to a tension spring 19, and one end of the tension spring 19 is fixedly connected to a sliding plate 18. The sliding plate 18 is slidably connected to the outside of the rotating column 17.

[0043] like Figure 6 and Figure 8 As shown, a T-shaped sliding column 15 is slidably connected to the upper end of the first clamping column 52. A stop block 14 is fixed to the upper end of the T-shaped sliding column 15. The surfaces of the stop block 14 and the sliding plate 18 that are close to each other are arranged in a semi-circular arc shape, which can better fit and abut against the surface of the tubular profile 2.

[0044] like Figure 3 and Figure 6 As shown, a spring 16 is provided in the inner cavity of the first clamping post 52, wherein one end of the spring 16 abuts against the inner wall of the first clamping post 52, and the other end is fixedly installed with the T-shaped sliding post 15.

[0045] Specifically, before butt welding the tubular profiles 2, the two tubular profiles 2 are placed on the workbench 1, and the T-shaped slide rods 51 are driven to move closer to each other. The T-shaped slide rods 51 drive the rotating column 17 to move synchronously, which in turn drives the first clamping column 52 to move and clamp and position the tubular profiles 2. After the first clamping column 52 clamps the tubular profiles 2, the slide plate 18 is pulled by the tension spring 19 to slide outside the rotating column 17, thereby lifting the tubular profiles 2. At the same time, the T-shaped slide column 15 is lifted by the spring 16 and slides in. The first clamping column 52 moves downwards and drives the abutment block 14 to abut against the upper part of the tubular profile 2, thereby achieving clamping and positioning of the tubular profile 2, ensuring the accuracy of the connection between the two tubular profiles 2, and preventing deviations in the connection between the two tubular profiles 2. This solves the problem that when the profile welding device used in construction engineering is used to weld tubular profiles, it is difficult to clamp and position the two tubular profiles for connection. At the same time, during the clamping and positioning process, the two tubular profiles are pushed to come close together for connection, which affects the efficiency of the tubular profile welding process.

[0046] Example 2

[0047] like Figure 2 , Figure 3 and Figure 6 As shown, a rotating groove 11 is provided at the bottom of the inner cavity of the slide groove 56. A driven bevel gear 10 is rotatably connected to the bottom of the inner cavity of the rotating groove 11. A rotating frame 12 is fixedly connected to the upper end of the driven bevel gear 10. A pull rod 13 is rotatably connected to both ends of the rotating frame 12. One end of the pull rod 13 is rotatably connected to the T-shaped slide rod 51.

[0048] like Figure 2 , Figure 3 and Figure 6As shown, one end of the driven bevel gear 10 passes through the worktable 1 and is meshed with the transmission bevel gear 9. The transmission bevel gear 9 has a rotating shaft 8 fixedly connected inside. One end of the rotating shaft 8 is fixedly connected to the output shaft of the drive motor 7, and the drive motor 7 is fixedly installed on the worktable 1.

[0049] Specifically, before welding the tubular profile 2, the drive motor 7 is started to drive the rotating shaft 8 to rotate, which in turn drives the transmission bevel gear 9 to rotate. At the same time, the transmission bevel gear 9 meshes with the driven bevel gear 10 to rotate, and the driven bevel gear 10 drives the rotating frame 12 to rotate. During the rotation of the rotating frame 12, the pull rod 13 will move, and the pull rod 13 will pull the T-shaped slide rod 51 to slide in the inner cavity of the slide groove 56, thereby achieving the clamping and positioning effect of the tubular profile 2 and improving the welding accuracy.

[0050] like Figure 1 , Figures 7 to 9 As shown, a limiting groove 3 is provided in the middle of the upper end face of the workbench 1. An auxiliary welding assembly 4 is provided in the inner cavity of the limiting groove 3. The auxiliary welding assembly 4 includes two sliding frames 41 fixedly installed in the inner cavity of the limiting groove 3. Four transmission gears 44 are rotatably arranged between the two sliding frames 41. A semi-circular rotating frame 43 is externally meshed with the transmission gears 44. A welder 6 is installed in the inner cavity of the semi-circular rotating frame 43.

[0051] like Figure 1 , Figures 7 to 9 As shown, two semi-circular fixed frames 42 are fixedly connected to each other on the sliding frame 41, and a synchronous motor is provided in the inner cavity of the two semi-circular fixed frames 42. The output shaft end of the synchronous motor is fixedly connected to the transmission gear 44, and the semi-circular rotating frame 43 is rotatably connected to the outside of the semi-circular fixed frame 42.

[0052] like Figure 1 , Figures 7 to 9 As shown, several toothed blocks are provided on the outer sides of the semicircular rotating frame 43, and the semicircular rotating frame 43 is connected to the transmission gear 44 through the toothed blocks. The semicircular rotating frame 43 is snapped onto the outside of the semicircular fixed frame 42, so that the semicircular rotating frame 43 will not fall off the outside of the semicircular fixed frame 42 when it rotates.

[0053] Specifically, when welding the tubular profile 2, the synchronous motor drives the transmission gear 44 to rotate, which in turn meshes with the semi-circular rotating frame 43 to rotate, thereby driving the welding device 6 to rotate synchronously. During the rotation of the welding device 6, the welding device 6 welds the joint of the tubular profile 2. After the semi-circular rotating frame 43 rotates 180 degrees, the welding of the joint of the tubular profile 2 is completed, thus realizing the rapid welding of the tubular profile 2. This solves the problem that existing profile welding devices used in construction engineering usually use a robotic arm to control the welding device to weld the joint of the tubular profile, and use the welding device to control the rotation of the tubular profile to achieve welding. However, controlling the rotation of the tubular profile by the welding device can easily cause deviation at the joint of the tubular profile, affecting the overall structural strength of the tubular profile after welding and affecting the quality of the tubular profile after processing.

[0054] The working principle is as follows: Before welding the tubular profile 2, the two tubular profiles 2 are placed on the workbench 1, and the T-shaped slide bar 51 is driven to move closer to each other. The T-shaped slide bar 51 drives the rotating column 17 to move synchronously, which in turn drives the first clamping column 52 to move and clamp and position the tubular profile 2. After the first clamping column 52 clamps the tubular profile 2, the slide plate 18 is pulled by the tension spring 19 to slide outside the rotating column 17, thereby lifting the tubular profile 2. At the same time, the T-shaped slide bar 15 is lifted by the spring 16 and slides into the inner cavity of the first clamping column 52, which drives the abutment block 14 to move downward, thereby abutting the upper part of the tubular profile 2. This achieves the clamping and positioning of the tubular profile 2, ensuring the accuracy of the connection between the two tubular profiles 2 and preventing deviations in the connection between the two tubular profiles 2.

[0055] When the circular sliders 57 move closer to each other, they drive the gears 54 to move synchronously. During this movement, the gears 54 mesh with the rack 21 and rotate, which in turn drives the circular sliders 57 to rotate and the second clamping column 55 to rotate. During the clamping and fixing of the tubular profile 2 using the second clamping column 55, the rubber teeth on the outside of the second clamping column 55 deform as the second clamping column 55 moves closer to each other. During the rotation of the second clamping column 55, it drives the two tubular profiles 2 to move closer to each other. This allows the two tubular profiles 2 to be clamped and positioned while also pushing them closer to each other to reduce the gap between them and improve the overall structural strength of the two tubular profiles 2 after welding.

[0056] When welding the tubular profile 2, the synchronous motor is started to drive the transmission gear 44 to rotate, and the transmission gear 44 meshes with the transmission semi-circular rotating frame 43 to rotate, which in turn drives the welding machine 6 to rotate synchronously. During the rotation of the welding machine 6, the welding machine 6 is started to weld the joint of the tubular profile 2. After the semi-circular rotating frame 43 rotates 180 degrees, the welding of the joint of the tubular profile 2 is completed, thereby realizing the rapid welding of the tubular profile 2.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended technical solutions and their equivalents.

Claims

1. A profile welding device for construction engineering, comprising a workbench (1) and a plurality of U-shaped grooves (23) formed on the upper end face of the workbench (1), wherein each U-shaped groove (23) has a rotating support roller (22) inside for supporting the tubular profile (2) for conveying and moving, characterized in that: The upper end of the workbench (1) is provided with a welder (6), and grooves (20) are symmetrically provided on the workbench (1) on one side of each roller (22). The two grooves (20) and the roller (22) are arranged in a triangle. Two sets of positioning docking components (5) are slidably connected to the upper end of the workbench (1). Furthermore, the two sets of positioning and docking components (5) include two slide grooves (56) opened on the upper surface of the workbench (1), wherein each slide groove (56) is slidably connected to two T-shaped slide rods (51), and a circular slider (57) is slidably arranged on each of the two T-shaped slide rods (51). A second clamping column (55) is fixedly connected to the upper end of the circular slider (57); a rack (21) is installed on one side of the inner wall of the groove (20), and a gear (54) is fixedly connected to the lower end of the circular slider (57) in the inner cavity of the groove (20). The lower end of the circular slider (57) is slidably connected in the inner cavity of the groove (20). The T-shaped slide bar (51) drives the circular slider (57) to move closer to each other, so that the second clamping column (55) clamps and positions the tubular profile (2). At the same time, when the circular slider (57) moves to the position of the rack (21), the gear (54) meshes with the rack (21), and the gear (54) drives the second clamping column (55) to rotate, continuously pushing the two tubular profiles (2) to dock and abut together. Each of the second clamping posts (55) is provided with a rubber tooth block on the outside, and the upper ends of the two T-shaped slide rods (51) are provided with cross slide grooves (53). The circular slider (57) is slidably disposed in the inner cavity of the cross slide grooves (53). Since the second clamping posts (55) are provided with rubber tooth blocks on the outside, the rubber tooth blocks will deform as the second clamping posts (55) move closer to each other. At the same time, during the rotation of the second clamping posts (55), the two tubular profiles (2) are driven to move closer to each other. Thus, during the clamping and positioning of the two tubular profiles (2), the two tubular profiles (2) can also be pushed to move closer to each other to reduce the gap between the joints.

2. The profile welding device for building engineering according to claim 1, characterized in that: The upper end of the T-shaped slide bar (51) is rotatably connected to multiple rotating columns (17), and the upper end of the multiple rotating columns (17) is fixedly connected to a first clamping column (52). The lower end of the first clamping column (52) is fixedly connected to a tension spring (19), and one end of the tension spring (19) is fixedly connected to a sliding plate (18). The sliding plate (18) is slidably connected to the outside of the rotating column (17).

3. The profile welding device for building engineering according to claim 2, characterized in that: The first clamping column (52) has a T-shaped sliding column (15) slidably connected to its upper end. The upper end of the T-shaped sliding column (15) is fixed with a stop block (14). The surfaces of the stop block (14) and the sliding plate (18) are both semi-circular arc-shaped, which can better fit and abut against the surface of the tubular profile (2).

4. The profile welding device for building engineering according to claim 3, characterized in that: The inner cavity of the first clamping post (52) is provided with a spring (16), wherein one end of the spring (16) abuts against the inner wall of the first clamping post (52), and the other end is fixedly installed with a T-shaped sliding post (15).

5. The profile welding device for building engineering according to claim 1, characterized in that: The bottom of the inner cavity of the slide groove (56) is provided with a rotating groove (11). A driven bevel gear (10) is rotatably connected to the bottom of the inner cavity of the rotating groove (11). A rotating frame (12) is fixedly connected to the upper end of the driven bevel gear (10). A pull rod (13) is rotatably connected to both ends of the rotating frame (12). One end of the pull rod (13) is rotatably connected to the T-shaped slide rod (51).

6. The profile welding device for building engineering according to claim 5, characterized in that: One end of the driven bevel gear (10) passes through the worktable (1) and is meshed with the transmission bevel gear (9). The transmission bevel gear (9) has a rotating shaft (8) fixed inside. One end of the rotating shaft (8) is fixedly connected to the output shaft of the drive motor (7), and the drive motor (7) is fixedly installed on the worktable (1).

7. The profile welding device for building engineering according to claim 1, characterized in that: A limiting groove (3) is provided in the middle of the upper end face of the workbench (1). An auxiliary welding assembly (4) is provided in the inner cavity of the limiting groove (3). The auxiliary welding assembly (4) includes two sliding frames (41) fixedly installed in the inner cavity of the limiting groove (3). Four transmission gears (44) are rotatably arranged between the two sliding frames (41). A semi-circular rotating frame (43) is externally meshed with the transmission gears (44). A welder (6) is installed in the inner cavity of the semi-circular rotating frame (43).

8. A profile welding device for building engineering according to claim 7, characterized in that: The sliding frame (41) has two semi-circular fixed frames (42) fixed to each other on its close surfaces. The inner cavity of the two semi-circular fixed frames (42) is provided with a synchronous motor. The output shaft end of the synchronous motor is fixed to the transmission gear (44). The semi-circular rotating frame (43) is rotatably connected to the outside of the semi-circular fixed frame (42).

9. A profile welding device for building engineering according to claim 8, characterized in that: The semicircular rotating frame (43) has several toothed blocks on both sides of its outer surface, and the semicircular rotating frame (43) is connected to the transmission gear (44) through the toothed blocks. The semicircular rotating frame (43) is snapped onto the outside of the semicircular fixed frame (42), so that the semicircular rotating frame (43) will not fall off the outside of the semicircular fixed frame (42) when it rotates.

Images