Automatic steel multi-angle welding device and method

Abstract

The invention provides an automatic steel multi-angle welding device and method, and belongs to the technical field of steel welding.The device comprises a main body, a welding arm, a driving assembly, an adsorption mechanism and a dismounting assembly.The bottom end of a mounting plate of the adsorption mechanism is provided with a first connecting pipe, and the interior of the bottom end of the first connecting pipe is rotationally connected with a second connecting pipe; a sealing sleeve is arranged at the bottom end of the second connecting pipe, an electric push rod is fixedly mounted in the sealing sleeve, a connecting shell is fixedly mounted on an output shaft of the electric push rod, a suction cup is fixedly mounted on the side, close to the center of the sealing sleeve, of the connecting shell, a vacuum pump is fixedly mounted at the top end of the mounting plate, and a flexible corrugated pipe connected with the vacuum pump is connected with the second connecting pipe. According to the invention, a mode of combining negative pressure adsorption and a three-point type self-adaptive stabilizing assembly is adopted, so that the clamping stability is improved; the damage to the surface of the steel pipe caused by position deviation is avoided, and the integrity of the circular steel pipe is also ensured; and diversified welding requirements can be met, and the overall quality of welding work is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of steel welding, and particularly relates to an automatic multi-angle steel welding device and method. Background Art

[0002] In many fields such as industrial production, construction, bridges, and shipbuilding, it is often necessary to precisely weld circular steel pipes or steel materials with specific arcs to one side of plate-shaped steel materials. This process is not just a simple connection but a key link that has an important impact on structural strength, stability, and overall aesthetics. Therefore, this process requires the ability to precisely lift and position these circular steel pipes or curved steel materials to the designated positions on the plate-shaped steel materials, and only after stable clamping can subsequent high-quality welding operations be carried out. Currently, in order to improve welding quality and production efficiency, laser welding has gradually replaced traditional welding methods, and the use of welding arms (robotic arms) for automated welding has also become an industry development trend. Especially for advanced welding processes such as laser welding with extremely high precision requirements, it poses a more severe challenge to the stability of clamping.

[0003] After retrieval, the patent document CN222626607U discloses a steel welding device, which includes a workbench, a mounting plate fixed on the upper surface of the workbench, and an automatic welding mechanism mounted on the surface of the mounting plate. An auxiliary fixing component is mounted on the workbench. The auxiliary fixing component includes support seats arranged symmetrically on the upper surface of the workbench, a fixing plate arranged above the support seats, and a clamping mechanism mounted on the upper surface of the fixing plate. The lower surface of the fixing plate is fixed with an adjusting seat. By setting the auxiliary fixing component, through this operation, it is beneficial to change the angle between two adjusted steel plates, facilitating the adjustment of the welding angle between three-dimensional structural steel plates, thereby improving the use effect of the device, bringing convenience to the operator, and meeting the actual use requirements.

[0004] Although the above patent document facilitates the adjustment of the welding angle between three-dimensional structural steel plates by changing the angle between two adjusted steel plates; however, the welding device adopted in the above patent document is not completely applicable to the welding of thin-walled circular steel pipes and plate-shaped steel materials. Specifically, when welding a thin-walled circular steel pipe and a plate-shaped steel material, if a conventional clamping device is used, it is extremely easy to damage the surface of the circular steel pipe, which not only weakens the structural strength of the circular steel pipe but also affects its aesthetics; in order to avoid damage, the common practice is to increase the wall thickness of the steel pipe, but this will lead to an increase in the overall weight and volume of the equipment, making the welding components bulky; in addition, when the existing clamping mechanism performs multi-angle welding, the circular steel pipe is prone to relative sliding with the clamping structure, thus affecting the efficiency and quality of the welding work. Especially in the automated laser welding process that requires high-precision positioning, this sliding may cause welding position deviation and affect the quality of the final product. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide an automatic multi-angle steel welding device and method, which effectively solve the problems in the prior art that when a thin-walled circular steel pipe is welded to a plate-shaped steel, if a conventional clamping device is used, the surface of the circular steel pipe is extremely likely to be damaged, which not only weakens the structural strength of the circular steel pipe but also affects its aesthetics; in order to avoid damage, the common practice is to increase the wall thickness of the steel pipe, but this will lead to an increase in the overall weight and volume of the equipment, making the welding parts bulky; in addition, when the existing clamping mechanism performs multi-angle welding, the circular steel pipe is prone to relative sliding with the clamping structure, thus affecting the efficiency and quality of the welding work. Especially in the automated laser welding process that requires high-precision positioning, this sliding may cause deviation of the welding position and affect the quality of the final product.

[0006] To achieve the above object, the present invention provides the following technical solution: An automatic multi-angle steel welding device, including a main body, a welding arm and a driving component, further including: an adsorption mechanism, which is arranged on one side of the driving component. The adsorption mechanism includes a mounting plate arranged on one side of the driving component. A connecting pipe one is arranged at the bottom end of the mounting plate. The inner part of the bottom end of the connecting pipe one is rotatably connected with a connecting pipe two. A sealing sleeve is arranged at the bottom end of the connecting pipe two. A connecting component is arranged inside the sealing sleeve. An electric push rod is fixedly installed inside the sealing sleeve. The output shaft of the electric push rod is fixedly installed with a connecting shell, and the hoses around the connecting component are connected to the connecting shell. A suction cup is fixedly installed on the side of the connecting shell close to the center of the sealing sleeve. A vacuum pump is fixedly installed at the top end of the mounting plate, and a flexible bellows connected to the vacuum pump is connected to the connecting pipe two; a disassembly component, which is arranged at the air inlet of the connecting component and can fix the sealing sleeve at the bottom end of the connecting pipe two.

[0007] As a further improvement of the present invention, the disassembly component includes a spiral pipe rotatably connected inside the connecting component. A rotating block one is fixedly installed on the surface of the spiral pipe, and the spiral pipe is threadedly connected with the connecting pipe two.

[0008] As a further improvement of the present invention, the automatic multi-angle steel welding device further includes: a driving mechanism arranged at the top end of the sealing sleeve. The driving mechanism includes a fixed shell fixedly connected to the top end of the sealing sleeve. A movable sealing ring is arranged inside the fixed shell. A spring is elastically connected between the movable sealing ring and the fixed shell. The connecting component is connected to the fixed shell through an air extraction pipe; a three-point adaptive stabilizing component arranged on the outer surface of the movable sealing ring, which can limit the circular steel pipe.

[0009] As a further improvement of the present invention, the three-point adaptive stabilizing component includes a connecting shaft, the connecting shaft is fixedly connected to the top end of the movable sealing ring, both sides of the connecting shaft are rotatably connected with hinge rods, the inside of the hinge rod is rotatably connected with a locking member, and the locking member is rotatably connected with the sealing sleeve, and contact pads are arranged on one side of the locking member close to the center of the sealing sleeve.

[0010] As a further improvement of the present invention, the automatic multi-angle welding device for steel also includes an adjusting mechanism, which is arranged on the surface of the second connecting pipe. The adjusting mechanism includes a connecting disc, the connecting disc is fixedly connected to the surface of the second connecting pipe, three mounting blocks are fixedly installed at the top end of the connecting disc, the bottom end of the mounting plate is rotatably connected with three hydraulic cylinders, and the output shafts of the three hydraulic cylinders are all connected to the second rotating block.

[0011] As a further improvement of the present invention, the automatic multi-angle welding device for steel also includes a limiting component, which is arranged on the surface of the first connecting pipe. The limiting component includes a limiting groove, the limiting groove is opened on the surface of the first connecting pipe, and a connecting slider located inside the limiting groove is fixedly installed on the surface of the second connecting pipe.

[0012] As a further improvement of the present invention, a guide wheel is rotatably connected inside the sealing sleeve, and the hose around the connecting component can move on the surface of the guide wheel.

[0013] As a further improvement of the present invention, a limiting ring is fixedly installed inside the fixed shell, and the surface of the limiting ring can contact the bottom end of the movable sealing ring.

[0014] As a further improvement of the present invention, one side of the three contact pads close to the circular steel pipe is arc-shaped, and the contact pads are made of rubber material.

[0015] The present invention also provides a welding method using the above-mentioned automatic multi-angle welding device for steel. The welding method includes the following steps; S1. Place the steel plate on the surface of the conveying roller, move it to one side of the welding arm, start the driving component to make the sealing sleeve cover the surface of the circular steel pipe, then drive the electric push rod to make the suction cup contact the surface of the circular steel pipe, and use a vacuum pump to extract the air inside the connecting shell, and use negative pressure to fix the circular steel pipe. S2. While the connecting component extracts the air inside the connecting shell, the air extraction pipe will also extract the air inside the fixed shell. Then the movable sealing ring will drive the connecting shaft to move, and the hinge rod will drive the locking member and the contact pad to close to the surface of the circular steel pipe, thereby limiting the circular steel pipe. S3. Move the driving component on the slide rail on one side of the main body. When moving, it is necessary to adjust the angle of the circular steel pipe. Drive one of the hydraulic cylinders so that its output shaft pulls the second rotating block to move, and the other two hydraulic cylinders cooperate with the activated hydraulic cylinder. Thus, the connecting plate can drive the second connecting pipe to rotate inside the bottom end of the first connecting pipe, and the second connecting pipe can adjust the angle of the circular steel pipe, so as to adapt it to the multi-angle welding of the welding arm. S4. Move the driving component on the surface of the slide rail on one side of the main body. The driving component will drive the adsorption mechanism and the circular steel pipe to move to the position to be welded, and make the circular steel pipe contact the steel plate, and use the manipulator of the welding arm to perform welding.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) An automatic multi-angle steel welding device provided by the present invention adopts a combination of negative pressure adsorption and a three-point adaptive stabilizing component, significantly improving the clamping stability; not only avoiding damage to the surface of the steel pipe caused by position deviation during transportation, but also ensuring the integrity and aesthetics of the circular steel pipe; by flexibly adjusting the angle of the steel pipe, it can adapt to diverse welding requirements, thus improving the overall quality of the welding work.

[0017] (2) The present invention drives the suction cup to contact the surface of the circular steel pipe through an electric push rod, and uses the negative pressure generated by the vacuum pump to firmly adsorb the circular steel pipe; this non-contact fixing method avoids the deformation problem of the traditional clamping device caused by excessive clamping stress when clamping thin-walled steel pipes, thus effectively ensuring the welding quality and product appearance.

[0018] (3) An automatic multi-angle steel welding device provided by the present invention. When the vacuum pump works, the air pipe connected to the connecting component will also extract the air inside the fixed shell. The movable sealing ring will move inside the fixed shell, the spring will be stretched, the movable sealing ring will drive the connecting shaft to move, the connecting shaft will push the articulated rod to move, and the articulated rod will push the locking piece and the contact pad to close towards the surface of the circular steel pipe, so as to limit the circular steel pipe; this three-point adaptive stabilizing structure can effectively prevent the circular steel pipe from shaking and falling off during transportation, improving the stability of transportation; in addition, the contact pad is made of rubber material, playing a buffering and protecting role, avoiding damage to the surface of the steel pipe, and further maintaining the integrity and aesthetics of the steel pipe.

[0019] (4) The present invention can precisely control one of the hydraulic cylinders and cooperate with the other two hydraulic cylinders to accurately adjust the position of the connecting plate, and then drive the sealing sleeve and the circular steel pipe to achieve flexible multi-angle rotation; enabling the device to easily handle various complex welding scenarios, realizing multi-angle precision welding, and significantly improving the flexibility and adaptability of the welding operation. Description of the Drawings

[0020] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the schematic diagram of the driving component of the present invention; Figure 3 is the schematic diagram of the mounting plate of the present invention; Figure 4 is the schematic diagram of the connection between the first connecting pipe and the second connecting pipe of the present invention; Figure 5 is the schematic diagram of the connection between the second connecting pipe and the spiral pipe of the present invention; Figure 6 is the internal schematic diagram of the sealing sleeve of the present invention; Figure 7 is the schematic diagram of the connection shell of the present invention; Figure 8 is the schematic diagram of the fixed shell of the present invention; Figure 9 is the schematic diagram of the disassembly component of the present invention; Figure 10 is the Figure 7 magnified schematic diagram of part A in the present invention.

[0021] In the figure: 100, main body; 200, welding arm; 300, driving component; 400, adsorption mechanism; 401, mounting plate; 402, first connecting pipe; 403, second connecting pipe; 404, sealing sleeve; 405, connecting component; 406, electric push rod; 407, connection shell; 408, suction cup; 409, vacuum pump; 500, disassembly component; 501, spiral pipe; 502, first rotating block; 600, driving mechanism; 601, fixed shell; 602, spring; 603, movable sealing ring; 604, exhaust pipe; 700, three-point type adaptive stabilization component; 701, connecting shaft; 702, articulated rod; 703, locking part; 704, contact pad; 800, adjusting mechanism; 801, connecting disk; 802, mounting block; 803, hydraulic cylinder; 804, second rotating block; 900, limiting component; 901, limiting groove; 902, connecting slider; 1001, guide wheel; 1101, limiting ring. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] It should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc. indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0024] It should be understood that in the description of the invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense.

[0025] Embodiment 1: Refer to the appendix Figures 1 to 10 , an automatic multi-angle welding device for steel provided in this Embodiment 1 includes a main body 100, a welding arm 200, and a driving assembly 300, and further includes: An adsorption mechanism 400, which is arranged on one side of the driving assembly 300; Among them, the adsorption mechanism 400 includes a mounting plate 401, the mounting plate 401 is arranged on one side of the driving assembly 300, a connecting pipe 402 is arranged at the bottom end of the mounting plate 401, a connecting pipe 403 is rotatably connected inside the bottom end of the connecting pipe 402, a sealing sleeve 404 is arranged at the bottom end of the connecting pipe 403, a connecting assembly 405 is arranged inside the sealing sleeve 404, an electric push rod 406 is fixedly installed inside the sealing sleeve 404, a connecting shell 407 is fixedly installed on the output shaft of the electric push rod 406, and the hoses around the connecting assembly 405 are connected to the connecting shell 407. A suction cup 408 is fixedly installed on one side of the connecting shell 407 close to the center of the sealing sleeve 404. A vacuum pump 409 is fixedly installed at the top end of the mounting plate 401, and a flexible bellows connected to the vacuum pump 409 is connected to the connecting pipe 403; A disassembly component 500, which is arranged at the air inlet of the connecting assembly 405 and can fix the sealing sleeve 404 at the bottom end of the connecting pipe 403.

[0026] The operator places the circular steel pipe to be welded at the bottom end of the sealing sleeve 404. Then, the steel plate can be placed on the conveying rollers inside the main body 100. Next, the conveying rollers can transport the steel plate to one side of the welding arm 200. At this time, an existing transportation tool or other tools can be used to place the circular steel pipe at the bottom of the sealing sleeve 404. The driving assembly 300 can be driven to lower the entire adsorption mechanism 400. Then, the sealing sleeve 404 will be sleeved on the surface of the circular steel pipe. At this time, the electric push rod 406 can be driven to make its output shaft push the connecting shell 407 and the suction cup 408 to move towards the surface of the circular steel pipe. Then, the suction cup 408 will fit on the surface of the circular steel pipe. The vacuum pump 409 can be driven to make the flexible corrugated pipe extract the air inside the connecting shell 407, and a negative pressure space will be formed in the suction cup 408, and then the circular steel pipe can be fixed. The driving assembly 300 is driven to make the adsorption mechanism 400 drive the circular steel pipe to move upward. Then, the driving assembly 300 is driven to move on the slide rail on one side of the main body 100, so that it drives the circular steel pipe to move to the top of the steel plate. The driving assembly 300 is driven to place the circular steel pipe at the position to be welded with the steel plate. The welding arm 200 is driven to weld the connection part thereof.

[0027] See the appendix Figure 5 、 Figure 6 、 Figure 8 and Figure 9 For Figure 9 , the disassembly assembly 500 includes a spiral tube 501. The spiral tube 501 is rotatably connected inside the connecting assembly 405. A rotating block one 502 is fixedly installed on the surface of the spiral tube 501, and the spiral tube 501 is threadedly connected to the connecting pipe two 403.

[0028] Through the design of the disassembly assembly 500, the rotating block one 502 can be rotated, and the rotating block one 502 will drive the spiral tube 501 to rotate inside the connecting assembly 405. Since the spiral tube 501 is threadedly connected to the connecting pipe two 403, when the rotating block one 502 rotates, the spiral tube 501 will enter the inside of the connecting pipe two 403, thereby fixing the sealing sleeve 404 at the bottom end of the connecting pipe two 403. And the spiral tube 501 is of a hollow design, so it will not affect the extraction of the air inside the connecting shell 407. Finally, through the design of the spiral tube 501 and the rotating block one 502, a suitable sealing sleeve 404 can be selected according to the size of the circular steel pipe.

[0029] See the appendix Figure 8 and Figure 9 For Figure 9 , the device further includes a driving mechanism 600, which is arranged at the top end of the sealing sleeve 404. The driving mechanism 600 includes a fixed shell 601. The fixed shell 601 is fixedly connected to the top end of the sealing sleeve 404. A movable sealing ring 603 is arranged inside the fixed shell 601. A spring 602 is elastically connected between the movable sealing ring 603 and the fixed shell 601. The connecting assembly 405 is connected to the fixed shell 601 through an air extraction pipe 604; The three - point adaptive stabilizing component 700 is arranged on the outer surface of the movable sealing ring 603 and can limit the circular steel pipe.

[0030] Through the design of the driving mechanism 600, when the vacuum pump 409 extracts the air pressure inside the connecting shell 407, the air extraction pipe 604 will also extract the gas inside the fixed shell 601. Since the sealing ring 603 fits closely with the inner wall of the fixed shell 601, when the air inside the fixed shell 601 is extracted, the movable sealing ring 603 will move accordingly. When the movable sealing ring 603 moves, the spring 602 will be stretched, and then the movable sealing ring 603 will drive the three - point adaptive stabilizing component 700 to close towards the surface of the circular steel pipe. Thus, during the negative pressure adsorption process, the circular steel pipe can be limited.

[0031] See Appendix Figure 8 and Figure 9 As shown in FIGS.

[0032] Through the design of the three - point adaptive stabilizing component 700, when the movable sealing ring 603 moves, it will drive the connecting shaft 701 to move. Since the connecting shaft 701 is rotatably connected to the locking member 703 through the hinge rod 702, the hinge rod 702 will push the locking member 703 and the contact pad 704 to close towards the surface of the circular steel pipe. Figure 6 FIG.

[0033] See Appendix Figure 2 and Figure 3 As shown in FIGS.

[0034] The device further includes an adjusting mechanism 800 which is arranged on the surface of the second connecting pipe 403. The adjusting mechanism 800 includes a connecting disk 801 which is fixedly connected to the surface of the second connecting pipe 403. Three mounting blocks 802 are fixedly installed at the top of the connecting disk 801. The bottom end of the mounting plate 401 is rotatably connected to three hydraulic cylinders 803, and the output shafts of the three hydraulic cylinders 803 are all connected to the second rotating blocks 804.Through the design of the adjustment mechanism 800, when it is necessary to adjust the angle of the circular steel pipe, one of the hydraulic cylinders 803 can be activated to pull the second rotating block 804 to move with its output shaft, and the other two hydraulic cylinders 803 will cooperate with the activated hydraulic cylinder 803. Furthermore, the connecting disk 801 can drive the second connecting pipe 403 to rotate inside the bottom end of the first connecting pipe 402, and the second connecting pipe 403 can adjust the angle of the circular steel pipe. Furthermore, the adsorption mechanism 400 can cooperate with the welding arm 200 to complete multi-angle welding. The adjustment mechanism 800 adopts an existing multi-degree-of-freedom motion platform, and thus will not be elaborated herein.

[0035] See the appendix Figure 3 and Figure 5 The device further includes a limiting component 900, which is arranged on the surface of the first connecting pipe 402. The limiting component 900 includes a limiting groove 901, which is opened on the surface of the first connecting pipe 402. A connecting slider 902 located inside the limiting groove 901 is fixedly installed on the surface of the second connecting pipe 403.

[0036] Through the design of the limiting component 900, when the adjustment mechanism 800 pulls the second connecting pipe 403 to rotate, the second connecting pipe 403 will drive the connecting slider 902 to slide inside the limiting groove 901, and the limiting groove 901 can limit the rotating connecting slider 902 and the second connecting pipe 403 to prevent their positions from shifting.

[0037] See the appendix Figure 6 and Figure 7 The inside of the sealing sleeve 404 is rotatably connected to a guide wheel 1001, and the flexible hoses around the connecting component 405 can move on the surface of the guide wheel 1001.

[0038] Through the design of the guide wheel 1001, when the electric push rod 406 pushes the connecting shell 407 and the suction cup 408 to move, the flexible hoses connected to the connecting shell 407 will also move. By utilizing the frictional force between the guide wheel 1001 and the flexible hoses, the moving flexible hoses will drive the guide wheel 1001 to rotate, and the guide wheel 1001 can limit the flexible hoses.

[0039] See the appendix Figures 1 to 10 Inside the fixed shell 601, a limiting ring 1101 is fixedly installed, and the surface of the limiting ring 1101 can contact the bottom end of the movable sealing ring 603.

[0040] Through the design of the limiting ring 1101, when the movable sealing ring 603 moves on the surface of the limiting ring 1101, the limiting ring 1101 can block the movable sealing ring 603 to prevent the movable sealing ring 603 from contacting the bottom end of the inner wall of the fixed shell 601, resulting in the reset of the movable sealing ring 603.

[0041] See the appendix Figure 6 andFigure 8 On one side of the three contact pads 704 close to the circular steel pipe, they are all arc-shaped designs, and the contact pads 704 are made of rubber material.

[0042] Through the design of the contact pads 704, since one side of the contact pads 704 close to the circular steel pipe is all arc-shaped design, the contact pads 704 can fully contact the surface of the circular steel pipe, thereby ensuring the limiting effect. And the contact pads 704 are made of rubber material, so that the circular steel pipe can be protected to avoid damage to the surface of the circular steel pipe during the limiting process.

[0043] The present invention also provides a separation method for an automatic multi-angle welding device for steel. The separation method includes the following steps; S1. The operator can place the circular steel pipe on the surface of the conveying roller inside the main body 100. Then, the conveying roller will drive the steel plate to move to one side of the welding arm 200. At this time, use an existing transportation tool or other tools to place the circular steel pipe at the bottom of the sealing sleeve 404. The driving component 300 can be driven to make the sealing sleeve 404 sleeved on the surface of the circular steel pipe. Then, the electric push rod 406 can be driven to make the suction cup 408 contact the surface of the circular steel pipe, and the vacuum pump 409 can be driven to make the flexible bellows extract the air inside the connecting shell 407. Then, the suction cup 408 can adsorb and fix the circular steel pipe. S2. When the vacuum pump 409 extracts the air inside the connecting shell 407, the air extraction pipe 604 will also extract the air inside the fixed shell 601. Then, the movable sealing ring 603 will move inside the fixed shell 601. When moving, the spring 602 will be stretched. Then, the movable sealing ring 603 will drive the connecting shaft 701 to move, and the connecting shaft 701 will push the articulated rod 702 to move. The articulated rod 702 will push the locking member 703 and the contact pads 704 to converge towards the surface of the circular steel pipe, so as to limit the circular steel pipe. S3. Then, the driving component 300 can be moved on the slide rail on one side of the main body 100. When it is necessary to adjust the angle of the circular steel pipe during the moving process, one of the hydraulic cylinders 803 can be driven, and then in cooperation with the other two hydraulic cylinders 803, the output shaft of the hydraulic cylinder 803 can pull the connecting disk 801 to deflect, and the connecting disk 801 can adjust the positions of the sealing sleeve 404 and the circular steel pipe so that they can be welded at a suitable angle. S4. Drive the driving component 300 again to make the sealing sleeve 404 drive the circular steel pipe to move upward. Then, make the driving component 300 slide on the slide rail on one side of the main body 100, and the circular steel pipe will move to the top of the steel plate. Then, drive the driving component 300 to move the circular steel pipe to the position to be welded, and then drive the welding arm 200 to weld it.

[0044] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic multi-angle welding device for steel, comprising a main body (100), a welding arm (200) and a driving component (300), characterized in that, Further included are: An adsorption mechanism (400), which is arranged on one side of the driving component (300). The adsorption mechanism (400) includes a mounting plate (401), the mounting plate (401) is arranged on one side of the driving component (300), a first connecting pipe (402) is arranged at the bottom end of the mounting plate (401), a second connecting pipe (403) is rotatably connected inside the bottom end of the first connecting pipe (402), a sealing sleeve (404) is arranged at the bottom end of the second connecting pipe (403), a connecting component (405) is arranged inside the sealing sleeve (404), an electric push rod (406) is fixedly installed inside the sealing sleeve (404), a connecting shell (407) is fixedly installed on the output shaft of the electric push rod (406), and the hoses around the connecting component (405) are connected to the connecting shell (407). A suction cup (408) is fixedly installed on one side of the connecting shell (407) close to the center of the sealing sleeve (404). A vacuum pump (409) is fixedly installed at the top end of the mounting plate (401), and a flexible corrugated pipe connected to the vacuum pump (409) is connected to the second connecting pipe (403); A disassembly component (500), which is arranged at the air inlet of the connecting component (405) and can fix the sealing sleeve (404) at the bottom end of the second connecting pipe (403).

2. The automatic multi-angle welding device for steel according to claim 1, characterized in that The disassembly component (500) includes a spiral pipe (501), the spiral pipe (501) is rotatably connected inside the connecting component (405), a first rotating block (502) is fixedly installed on the surface of the spiral pipe (501), and the spiral pipe (501) is threadedly connected to the second connecting pipe (403).

3. The automatic multi-angle welding device for steel as claimed in claim 1, wherein Further included are: A driving mechanism (600), which is arranged at the top end of the sealing sleeve (404). The driving mechanism (600) includes a fixed shell (601), the fixed shell (601) is fixedly connected to the top end of the sealing sleeve (404), a movable sealing ring (603) is arranged inside the fixed shell (601), a spring (602) is elastically connected between the movable sealing ring (603) and the fixed shell (601), and the connecting component (405) is connected to the fixed shell (601) through an air extraction pipe (604); A three-point adaptive stabilizing component (700), which is arranged on the outer surface of the movable sealing ring (603) and can limit the circular steel pipe.

4. The automatic multi-angle welding device for steel according to claim 3, characterized in that, The three-point adaptive stabilizing component (700) includes a connecting shaft (701), the connecting shaft (701) is fixedly connected to the top end of the movable sealing ring (603), hinge rods (702) are rotatably connected to both sides of the connecting shaft (701), a locking part (703) is rotatably connected inside the hinge rod (702), and the locking part (703) is rotatably connected to the sealing sleeve (404). Contact pads (704) are arranged on one side of the locking part (703) close to the center of the sealing sleeve (404).

5. The automatic multi-angle welding device for steel as claimed in claim 1, wherein It further includes an adjusting mechanism (800) which is arranged on the surface of the second connecting pipe (403). The adjusting mechanism (800) includes a connecting disc (801) which is fixedly connected to the surface of the second connecting pipe (403). Three mounting blocks (802) are fixedly installed at the top end of the connecting disc (801). Three hydraulic cylinders (803) are rotatably connected to the bottom end of the mounting plate (401). Three rotating blocks two (804) are rotatably connected inside the three mounting blocks (802), and the output shafts of the hydraulic cylinders (803) are all connected to the rotating blocks two (804).

6. The automatic multi-angle steel welding device according to claim 1, characterized in that, It further includes a limiting component (900) which is arranged on the surface of the first connecting pipe (402). The limiting component (900) includes a limiting groove (901) which is opened on the surface of the first connecting pipe (402). A connecting slider (902) which is located inside the limiting groove (901) is fixedly installed on the surface of the second connecting pipe (403).

7. The automatic multi-angle welding device for steel as claimed in claim 1, wherein A guide wheel (1001) is rotatably connected inside the sealing sleeve (404), and the hose around the connecting component (405) can move on the surface of the guide wheel (1001).

8. The automatic multi-angle welding device for steel as claimed in claim 3, wherein, A limiting ring (1101) is fixedly installed inside the fixed shell (601), and the bottom end of the movable sealing ring (603) can contact with the surface of the limiting ring (1101).

9. The automatic multi-angle steel welding device according to claim 4, characterized in that, One sides of the three contact pads (704) close to the circular steel pipe are all arc-shaped designs, and the contact pads (704) are made of rubber materials.

10. The welding method of the automatic multi-angle welding device for steel according to any one of claims 1-9, characterized in that, This welding method includes the following steps; S1. Place the steel plate on the surface of the conveying rollers, move it to one side of the welding arm (200), start the driving component (300) to sleave the sealing sleeve (404) on the surface of the circular steel pipe, then drive the electric push rod (406) to make the suction cup (408) contact with the surface of the circular steel pipe, and use the vacuum pump (409) to extract the air inside the connecting shell (407), and fix the circular steel pipe by negative pressure; S2. While the connecting component (405) extracts the air inside the connecting shell (407), the air extraction pipe (604) also extracts the air inside the fixed shell (601). Then the movable sealing ring (603) drives the connecting shaft (701) to move, and the articulated rod (702) drives the locking part (703) and the contact pads (704) to close to the surface of the circular steel pipe, so as to limit the circular steel pipe; S3. Move the driving component (300) on the slide rail on one side of the main body (100). When moving, it is necessary to adjust the angle of the circular steel pipe. Drive one of the hydraulic cylinders (803) to make its output shaft pull the rotating block two (804) to move, and the other two hydraulic cylinders (803) cooperate with the started hydraulic cylinder (803). Thus, the connecting disc (801) can drive the second connecting pipe (403) to rotate inside the bottom end of the first connecting pipe (402), and the second connecting pipe (403) can adjust the angle of the circular steel pipe, so as to adapt it to the multi-angle welding of the welding arm (200); S4. Move the driving assembly (300) on the surface of the slide rail on one side of the main body (100). The driving assembly (300) will drive the adsorption mechanism (400) and the circular steel pipe to move to the position to be welded, and make the circular steel pipe contact the steel plate, and use the manipulator of the welding arm (200) for welding.

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