A supporting device for round pipe metal welding assembly

Abstract

This application discloses a support device for welding and assembling circular tube metals, belonging to the field of welding assembly technology. It includes: a base plate; a fixed column fixedly connected to the upper end of the base plate; and a receiving seat slidably connected to the outer wall of the fixed column. This application achieves automated synchronization of workpiece rotation and welding torch oscillation. The transmission shaft drives the rolling wheel through a gear coupling, causing the clamped circular tube to rotate at a uniform speed, ensuring uniform circumferential weld formation. Simultaneously, power is transmitted to the turntable through a bevel gear set, converting the rotational motion into high-frequency reciprocating oscillation of the oscillating plate, thereby driving the welding torch to perform oscillating welding. This simultaneously completes the two core actions of circumferential welding and oscillating welding torch. The structure is compact and the transmission is highly efficient. Furthermore, the crank radius can be adjusted by an electric telescopic rod to precisely control the oscillation amplitude of the welding torch, adapting to different welding process requirements and significantly improving welding quality and automation.

Description

Technical Field

[0001] This application relates to the field of welding assembly technology, and more specifically, to a support device for welding and assembling circular tube-type metals. Background Technology

[0002] Metal welding is a manufacturing process that joins metals by heating, pressurizing, or both. It includes three types: fusion welding, pressure welding, and brazing. Fusion welding relies on the melting interface to form a weld seam and requires gas protection or deoxidation treatment; pressure welding achieves atomic bonding under solid-state pressure; and brazing uses a low-melting-point filler metal to wet the interface to complete the connection, with energy sources including electric arcs, lasers, and other forms.

[0003] For example, Chinese Patent Publication No. CN114559203B discloses the following technical solution: a support device for welding and assembling fitness equipment, comprising: a swing assembly; the mounting base is inserted into the top of the upright plate on the side of the support plate.

[0004] The existing technology has the following problems: The synchronization of the workpiece rotation and the welding torch oscillation in the above-mentioned device depends on the electrical control coordination of the rotating motor and the oscillating motor. This not only increases the complexity and cost of the electrical control system, but also, under some working conditions, the workpiece rotation and the welding torch oscillation are prone to being out of sync, affecting the uniformity of the weld formation. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a support device for welding and assembling circular tube-like metals, thus solving the problems mentioned in the background section.

[0006] To achieve the above objectives, this application provides a support device for welding and assembling circular tube-type metals, comprising: a base plate; a fixed column, the fixed column being fixedly connected to the upper end of the base plate; a receiving seat, the receiving seat being slidably connected to the outer wall of the fixed column; a spring, the spring being movably sleeved on the outer wall of the fixed column; and a fixing plate, the fixing plate being fixedly connected to the upper end of the base plate. A mounting plate is fixedly connected to the upper end of the base plate. A drive shaft and a bevel gear B are rotatably connected to the inner side of the mounting plate. A gear coupling is fixedly connected to the other end of the drive shaft. A rotating rod is fixedly connected to the other end of the gear coupling. A rolling wheel is fixedly sleeved on the outer wall of the rotating rod. A bevel gear A is fixedly sleeved on the outer wall of the drive shaft. The bevel gear B meshes with the bevel gear A. A connecting shaft is fixedly connected to the outer wall of the bevel gear B. A turntable is fixedly connected to the other end of the connecting shaft. An adjusting component is provided on the outer wall of the turntable. A movable shaft is provided on the outer wall of the turntable through the adjusting component. A connecting rod A is rotatably connected to the outer wall of the movable shaft. A moving rod is hinged to the other end of the connecting rod A through a pin. A mounting shaft is rotatably connected to the upper end of the fixed plate. A swing plate is fixedly connected to the top of the mounting shaft. A sliding groove is opened in the middle of the swing plate. A fixed shaft is fixedly connected to the upper end of the moving rod. The upper side of the fixed shaft is slidably connected inside the sliding groove. A welding torch is mounted on the side of the swing plate near the middle of the base plate.

[0007] Preferably, the adjusting component includes an electric telescopic rod and a connecting block. The electric telescopic rod is fixedly connected to the outer wall of the turntable, the connecting block is fixedly connected to the output end of the electric telescopic rod, and the movable shaft is fixedly connected to the middle of the connecting block.

[0008] Preferably, the bottom of the receiving seat is provided with a through groove, and the rolling wheel is movably connected inside the through groove.

[0009] Preferably, a fixing block is fixedly connected to the bottom of the receiving seat, and the rotating rod is rotatably connected to the fixing block.

[0010] Preferably, the bottom of the spring is fixedly connected to the base plate and the top of the spring is fixedly connected to the support seat.

[0011] Preferably, the upper end of the base plate is equipped with a self-weight clamping assembly, which includes a slide rail. The slide rail is fixedly connected to both sides of the receiving seat. A slide plate is slidably connected to the upper end of the slide rail. Two mounting blocks are fixedly connected to the outer wall of the slide plate. A rotating shaft is rotatably connected between the two mounting blocks. A V-shaped rod is fixedly sleeved on the outer wall of the rotating shaft. Mounting grooves are opened at both ends of the V-shaped rod. A positioning wheel is rotatably connected inside the mounting groove. A horizontal plate is fixedly connected to the upper end of the base plate. An inclined groove is opened on the outer wall of the horizontal plate. A connecting rod is fixedly connected between the two slide plates. The middle part of the connecting rod is slidably connected to the inclined groove.

[0012] Preferably, a torsion spring is fixedly connected to the inner side of one side of the mounting block, and the other end of the torsion spring is fixedly connected to a V-shaped rod.

[0013] Preferably, the outer wall of the middle part of the connecting rod is slidably connected to the inner wall of the inclined groove.

[0014] Preferably, the outer wall of the fixed plate is equipped with a dust collection assembly, which includes a collection box. The collection box is fixedly connected to the outer wall of the fixed plate. A fan is installed at the bottom of the collection box. A connecting pipe is installed at the top air inlet of the collection box. A dust collection hood is fixedly connected to the other end of the connecting pipe. A filter plate is fixedly connected inside the collection box. A push rod is fixedly connected to the bottom of the moving rod. The other end of the push rod movably passes through one side of the collection box and is fixedly connected to a scraper.

[0015] Preferably, the scraper is slidably connected inside the collection box and the bottom of the scraper is in contact with the upper surface of the filter plate.

[0016] The advantages of this application are: (1) This application realizes the automated synchronization of workpiece rotation and welding torch oscillation. The drive shaft drives the rolling wheel through the gear coupling, which drives the clamped round tube to rotate at a constant speed to ensure uniform circumferential weld formation; at the same time, the power is transmitted to the turntable through the bevel gear set, and then the rotational motion is converted into the high-frequency reciprocating oscillation of the oscillating plate, thereby driving the welding torch to perform oscillating welding. The two core actions of circumferential welding and oscillating welding torch are completed simultaneously. The structure is compact and the transmission is efficient. In addition, the crank radius can be adjusted by the electric telescopic rod to precisely control the oscillation amplitude of the welding torch, adapt to different welding process requirements, and significantly improve the welding quality and automation level.

[0017] (2) This application sets up a self-weight clamping component and uses the workpiece's own weight as a power source to achieve adaptive clamping. After the round tube is placed, the receiving seat is pressed down. The vertical downward movement is converted into the horizontal inward movement of the V-shaped rods on both sides through the inclined groove guide rail mechanism, which drives the positioning wheel to fit against the tube wall. The V-shaped rod is designed with a torsion spring so that it can automatically adjust the angle to adapt to round tubes of different diameters, ensuring that the positioning wheel always fully contacts and clamps the workpiece. The operation is extremely simple and efficient, and it avoids workpiece deformation or slippage caused by excessive or insufficient clamping force. It has strong versatility and high reliability.

[0018] (3) This application effectively solves the problem of smoke and dust pollution generated during welding by setting up a dust collection component. The combination of the fan and the dust collection hood can quickly suck in and filter the smoke and dust released during welding, ensuring a clean working environment and reducing harm to operators. In addition, impurities on the filter plate are automatically removed by the scraper cleaning function, avoiding clogging and ensuring the continuity and efficiency of the dust collection effect. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a top view of the structure of the present invention; Figure 3 This is the invention Figure 1 Enlarged structural diagram at point A in the middle; Figure 4 This is the invention Figure 2 Enlarged structural diagram at point B; Figure 5 This is the invention Figure 1 Enlarged structural diagram at point C; Figure 6 This is a partial cross-sectional structural schematic diagram of the present invention; Figure 7 This is the invention Figure 6 Enlarged structural diagram at point D.

[0020] In the above image, 1. Base plate; 21. Fixed column; 22. Receiving seat; 23. Spring; 31. Mounting plate; 32. Drive shaft; 33. Gear coupling; 34. Rotating rod; 35. Rolling wheel; 36. Through groove; 37. Bevel gear A; 38. Bevel gear B; 39. Connecting shaft; 310. Turntable; 311. Electric telescopic rod; 312. Connecting block; 313. Movable shaft; 314. Connecting rod A; 315. Moving rod; 316. Mounting shaft; 317. Swing plate; 318. 319. Slide rail; 320. Fixed shaft; 4. Fixed block; 5. Self-weight clamping assembly; 6. Slide rail; 7. Slide plate; 8. Mounting block; 9. Rotating shaft; 10. V-shaped rod; 11. Mounting groove; 12. Positioning wheel; 13. Horizontal plate; 14. Inclined groove; 15. Connecting rod; 16. Torsion spring; 17. Dust collection assembly; 18. Collection box; 19. Fan; 20. Connecting pipe; 21. Dust collection hood; 32. Filter plate; 43. Push rod; 54. Scraper; 55. Fixed plate. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort should fall within the scope of protection of the present application.

[0022] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the purposes of describing embodiments of this application herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0023] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0024] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0025] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] Example 1, please refer to Figures 1-7This embodiment provides a support device for welding and assembling circular tube-type metals, including: a base plate 1; a fixed column 21, which is fixedly connected to the upper end of the base plate 1; a support seat 22, which is slidably connected to the outer wall of the fixed column 21; a spring 23, which is movably sleeved on the outer wall of the fixed column 21; and a fixed plate 6, which is fixedly connected to the upper end of the base plate 1. A mounting plate 31 is fixedly connected to the upper end of the base plate 1. A drive shaft 32 and a bevel gear B38 are rotatably connected to the inner side of the mounting plate 31. A gear coupling 33 is fixedly connected to the other end of the drive shaft 32. A rotating rod 34 is fixedly connected to the other end of the gear coupling 33. A rolling wheel 35 is fixedly sleeved on the outer wall of the rotating rod 34. A bevel gear A37 is fixedly sleeved on the outer wall of the drive shaft 32. The bevel gear B38 meshes with the bevel gear A37. A connecting shaft 39 is fixedly connected to the outer wall of the bevel gear B38. A turntable 310 is fixedly connected to the other end of the connecting shaft 39. An adjusting component is provided on the outer wall of the turntable 310. The outer wall of the turntable 310 is provided with a movable shaft 313 through an adjusting component. The outer wall of the movable shaft 313 is rotatably connected to a connecting rod A314. The other end of the connecting rod A314 is hinged to a moving rod 315 through a pin. The upper end of the fixed plate 6 is rotatably connected to a mounting shaft 316. The top of the mounting shaft 316 is fixedly connected to a swing plate 317. A groove 318 is opened in the middle of the swing plate 317. The upper end of the moving rod 315 is fixedly connected to a fixed shaft 319. The upper side of the fixed shaft 319 is slidably connected to the inside of the groove 318. A welding gun is mounted on the side of the swing plate 317 near the middle of the bottom plate 1.

[0028] The adjusting components include an electric telescopic rod 311 and a connecting block 312. The electric telescopic rod 311 is fixedly connected to the outer wall of the turntable 310, and the connecting block 312 is fixedly connected to the output end of the electric telescopic rod 311. A movable shaft 313 is fixedly connected to the middle of the connecting block 312. A through groove 36 is provided at the bottom of the receiving seat 22, and a rolling wheel 35 is movably connected inside the through groove 36. This allows the rolling wheel 35 to move flexibly within the through groove 36 while maintaining a stable connection with the receiving seat 22. A fixing block 320 is fixedly connected to the bottom of the receiving seat 22. The rotating rod 34 is rotatably connected to the fixing block 320, allowing the rotating rod 34 to rotate flexibly with the fixing block 320 as a fulcrum. This ensures the stability between the components while achieving the necessary mobility. The bottom of the spring 23 is fixedly connected to the base plate 1, and the top of the spring 23 is fixedly connected to the receiving seat 22. The spring 23 can play its role in providing elastic support between the base plate 1 and the receiving seat 22.

[0029] In use, a motor needs to be connected to the outer wall of the mounting plate 31 first, and the output end of the motor needs to be fixedly connected to the transmission shaft 32. When the self-weight clamping assembly 4 fixes the two metal round tubes to be welded to the upper end of the receiving seat 22, the external motor is started and drives the transmission shaft 32 to rotate. Then the transmission shaft 32 will drive the gear coupling 33 at its other end to rotate. The gear coupling 33 will then drive the rotating rod 34 at its other end to rotate. The rolling wheel 35 located on the outer wall of the rotating rod 34 will also rotate. Since the rolling wheel 35 is movably connected in the through groove 36 at the bottom of the receiving seat 22, and the rotating rod 34 is rotatably connected to the fixing block 320, the rotation of the rolling wheel 35 will drive the fixed round tube to rotate. Meanwhile, the bevel gear A37 located on the outer wall of the transmission shaft 32 rotates synchronously with the rotation of the transmission shaft 32. Since bevel gear A37 meshes with bevel gear B38, the rotation of bevel gear A37 will drive bevel gear B38 to rotate, and thus the connecting shaft 39, which is fixedly connected to bevel gear B38, will also rotate. The rotation of the connecting shaft 39 will drive the turntable 310 at its other end to perform a circular motion around the axis of the connecting shaft 39. When the turntable 310 rotates, the movement of the movable shaft 313 will drive one end of the connecting rod A314 to perform a circular motion, while the other end of the connecting rod A314 is hinged to the moving rod 315 through a pin, which causes the moving rod 315 to move in the left and right directions under the traction of the connecting rod A314. The left and right movement of the moving rod 315 will cause the fixed shaft 319 fixedly connected to its upper end to slide in the groove 318 opened in the middle of the swing plate 317 at the top of the mounting shaft 316 on the upper end of the fixed plate 6. Since the sliding trajectory of the fixed shaft 319 in the groove 318 is restricted, the swing plate 317 will swing back and forth with the mounting shaft 316 as the fulcrum. This causes the welding gun mounted on the side of the swing plate 317 near the middle of the base plate 1 to adjust the welding angle with the swing plate 317, thereby realizing the operation of welding workpiece by repeatedly driving the welding rod to swing. During the welding process, if it is necessary to adjust the swing amplitude of the welding torch according to the diameter of the round pipe or the welding requirements, this can be achieved by controlling the electric telescopic rod 311 in the adjusting component. The extension and retraction of the electric telescopic rod 311 will change the position of the connecting block 312 on the outer wall of the turntable 310, thereby adjusting the distance between the movable shaft 313 and the axis of the turntable 310. The change in the position of the movable shaft 313 will change the traction stroke of the connecting rod A314 on the moving rod 315, and ultimately change the sliding distance of the fixed shaft 319 in the slide groove 318, thereby achieving the purpose of adjusting the swing amplitude of the swing plate 317.

[0030] Example 2, please refer to Figures 1-7Based on Embodiment 1, a self-weight clamping assembly 4 is mounted on the upper end of the base plate 1. The self-weight clamping assembly 4 includes a slide rail 41, which is fixedly connected to both sides of the receiving seat 22. A slide plate 42 is slidably connected to the upper end of the slide rail 41. Two mounting blocks 43 are fixedly connected to the outer wall of the slide plate 42. A rotating shaft 44 is rotatably connected between the two mounting blocks 43. A V-shaped rod 45 is fixedly sleeved on the outer wall of the rotating shaft 44. Mounting grooves 46 are opened at both ends of the V-shaped rod 45. A positioning wheel 47 is rotatably connected inside the mounting groove 46. A horizontal plate 48 is fixedly connected to the upper end of the base plate 1. An inclined groove 49 is opened on the outer wall of the horizontal plate 48. A connecting rod 410 is fixedly connected between the two slide plates 42. The middle part of the connecting rod 410 is slidably connected to the inclined groove 49. A torsion spring 411 is fixedly connected to the inner side of one mounting block 43. The other end of the torsion spring 411 is fixedly connected to the V-shaped rod 45.

[0031] The middle outer wall of the connecting rod 410 is slidably connected to the inner wall of the inclined groove 49. The two achieve relative movement through this sliding connection, while ensuring that the connecting rod 410 always remains in contact with the inner wall of the inclined groove 49 during movement and does not deviate from the track.

[0032] In use, the two round tubes to be welded are first placed on the upper end of the receiving seat 22. Under the action of weight, the receiving seat 22 slides down along the outer wall of the fixed column 21 and compresses the spring 23. As the receiving seat 22 moves down, the slide rails 41 on both sides descend synchronously, driving the slide plate 42 and the connecting rod 410 between the two slide plates 42 to move downward. Since the middle part of the connecting rod 410 is slidably connected to the inclined groove 49 on the outer wall of the horizontal plate 48, under the guidance of the inclined groove 49, the connecting rod 410 moves downward and drives the slide plates 42 on both sides to slide along the slide rail 41 towards the center of the receiving seat 22. The sliding of the slide plate 42 causes the mounting block 43, the rotating shaft 44 and the V-shaped rod 45 to move synchronously, and the positioning wheels 47 at both ends of the V-shaped rod 45 gradually approach the outer wall of the round tube. When the upper or lower positioning wheel 47 contacts the round tube, the round tube exerts a reverse force on the positioning wheel 47, pushing the V-shaped rod 45 to rotate around the pivot 44. At this time, the torsion spring 411 is torsionally stressed and accumulates elastic potential energy. As the receiving seat 22 continues to move downward, the V-shaped rods 45 on both sides continuously adjust their angles under the reset action of the torsion spring 411 until both positioning wheels 47 are tightly fitted to the outer wall of the round tube. The weight of the round tube itself is used to achieve adaptive clamping and fixing of round tubes of different diameters, effectively preventing the round tube from shifting or shaking during the welding process.

[0033] Example 3, please refer to Figures 1-7Based on Embodiment 1, a dust collection assembly 5 is fitted to the outer wall of the fixed plate 6. The dust collection assembly 5 includes a collection box 51, which is fixedly connected to the outer wall of the fixed plate 6. A fan 52 is installed at the bottom of the collection box 51, and a connecting pipe 53 is installed at the top air inlet of the collection box 51. A dust collection hood 54 is fixedly connected to the other end of the connecting pipe 53. A filter plate 55 is fixedly connected inside the collection box 51. A push rod 56 is fixedly connected to the bottom of the moving rod 315. The other end of the push rod 56 movably passes through one side of the collection box 51 and is fixedly connected to a scraper 57. The scraper 57 is slidably connected inside the collection box 51, and the bottom of the scraper 57 is in contact with the upper surface of the filter plate 55.

[0034] During use, the fan 52 is started during the welding process. The fan 52 draws the fumes generated during the welding process into the collection box 51 through the connecting pipe 53 and the dust suction hood 54. After the fumes are filtered by the filter plate 55 in the collection box 51, clean air is discharged from the fan 52, while the filtered welding slag and fumes remain on the filter plate 55. As welding continues, a certain amount of impurities will accumulate on the filter plate 55. At this time, the moving rod 315 will drive the push rod 56 fixedly connected to its bottom to move synchronously as it moves left and right. The other end of the push rod 56 pushes the scraper 57 to slide along the upper surface of the filter plate 55 inside the collection box 51, scraping the impurities accumulated on the filter plate 55 to one side of the collection box 51, so as to avoid the impurities clogging the filter plate 55 and affecting the dust collection effect, thereby achieving efficient collection of welding fumes and automatic cleaning of the filter plate 55.

[0035] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A support device for welding and assembling circular tube-like metals, characterized in that, include: Base plate; A fixed column is fixedly connected to the upper end of the base plate; A receiving seat, which is slidably connected to the outer wall of the fixed column; A spring, which is movably sleeved on the outer wall of the fixed column; A fixing plate, which is fixedly connected to the upper end of the base plate; A mounting plate is fixedly connected to the upper end of the base plate. A drive shaft and a bevel gear B are rotatably connected to the inner side of the mounting plate. A gear coupling is fixedly connected to the other end of the drive shaft. A rotating rod is fixedly connected to the other end of the gear coupling. A rolling wheel is fixedly sleeved on the outer wall of the rotating rod. A bevel gear A is fixedly sleeved on the outer wall of the drive shaft. The bevel gear B meshes with the bevel gear A. A connecting shaft is fixedly connected to the outer wall of the bevel gear B. A turntable is fixedly connected to the other end of the connecting shaft. An adjusting component is provided on the outer wall of the turntable. A movable shaft is provided on the outer wall of the turntable through the adjusting component. A connecting rod A is rotatably connected to the outer wall of the movable shaft. A moving rod is hinged to the other end of the connecting rod A through a pin. A mounting shaft is rotatably connected to the upper end of the fixed plate. A swing plate is fixedly connected to the top of the mounting shaft. A sliding groove is opened in the middle of the swing plate. A fixed shaft is fixedly connected to the upper end of the moving rod. The upper side of the fixed shaft is slidably connected inside the sliding groove. A welding torch is mounted on the side of the swing plate near the middle of the base plate.

2. The support device for welding and assembling circular tube-like metals according to claim 1, characterized in that, The adjusting component includes an electric telescopic rod and a connecting block. The electric telescopic rod is fixedly connected to the outer wall of the turntable, the connecting block is fixedly connected to the output end of the electric telescopic rod, and the movable shaft is fixedly connected to the middle of the connecting block.

3. The support device for welding and assembling circular tube-like metals according to claim 1, characterized in that, The bottom of the receiving seat has a through groove, and the rolling wheel is movably connected inside the through groove.

4. A support device for welding and assembling circular tube-like metals according to claim 1, characterized in that, A fixing block is fixedly connected to the bottom of the receiving seat, and the rotating rod is rotatably connected to the fixing block.

5. A support device for welding and assembling circular tube-like metals according to claim 1, characterized in that, The bottom of the spring is fixedly connected to the base plate and the top of the spring is fixedly connected to the support seat.

6. A support device for welding and assembling circular tube-like metals according to claim 1, characterized in that, The upper end of the base plate is equipped with a self-weight clamping assembly, which includes a slide rail. The slide rail is fixedly connected to both sides of the receiving seat. A slide plate is slidably connected to the upper end of the slide rail. Two mounting blocks are fixedly connected to the outer wall of the slide plate. A rotating shaft is rotatably connected between the two mounting blocks. A V-shaped rod is fixedly sleeved on the outer wall of the rotating shaft. Mounting grooves are opened at both ends of the V-shaped rod. A positioning wheel is rotatably connected inside the mounting groove. A horizontal plate is fixedly connected to the upper end of the base plate. An inclined groove is opened on the outer wall of the horizontal plate. A connecting rod is fixedly connected between the two slide plates. The middle part of the connecting rod is slidably connected to the inclined groove.

7. A support device for welding and assembling circular tube-like metals according to claim 6, characterized in that, A torsion spring is fixedly connected to the inner side of one side of the mounting block, and the other end of the torsion spring is fixedly connected to a V-shaped rod.

8. A support device for welding and assembling circular tube-like metals according to claim 7, characterized in that, The outer wall of the middle part of the connecting rod is slidably connected to the inner wall of the inclined groove.

9. A support device for welding and assembling circular tube-like metals according to claim 8, characterized in that, The outer wall of the fixed plate is equipped with a dust collection assembly, which includes a collection box. The collection box is fixedly connected to the outer wall of the fixed plate. A fan is installed at the bottom of the collection box. A connecting pipe is installed at the top air inlet of the collection box. A dust collection hood is fixedly connected to the other end of the connecting pipe. A filter plate is fixedly connected inside the collection box. A push rod is fixedly connected to the bottom of the moving rod. The other end of the push rod movably passes through one side of the collection box and is fixedly connected to a scraper.

10. A support device for welding and assembling circular tube-like metals according to claim 9, characterized in that, The scraper is slidably connected inside the collection box, and the bottom of the scraper is in contact with the upper surface of the filter plate.

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