Automatic welding device for air duct of axial flow fan

Abstract

The utility model relates to the technical field of air duct processing, and discloses an automatic welding device of an axial flow fan air duct, which comprises a supporting platform, two welding beams are symmetrically fixed at the upper end of the supporting platform, a same supporting plate is fixed at the upper ends of the two welding beams, two guide rails are mounted on the supporting plate, one guide rail penetrates through the supporting plate, and the other guide rail penetrates through the supporting plate. The other guide rail is arranged at the lower end of the supporting plate, a sliding rod is slidably connected to one guide rail, an abutting assembly is arranged on the side wall of the sliding rod, a mounting frame is slidably connected to the other guide rail, a first transmission assembly is arranged at the upper end of the supporting plate, and a second transmission assembly and a welding mechanism are arranged on the mounting frame. And the welding mechanism comprises a welding gun, a swinging assembly and a moving assembly, by arranging the welding mechanism, automation of straight seam welding of the air duct can be achieved, the problem that in the prior art, a worker needs to push the air duct to move for straight seam welding is solved, the labor intensity of the worker is reduced, and meanwhile the stability of straight seam welding of the air duct is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of air duct processing, in particular to an automatic welding device for an axial flow fan air duct. Background Art

[0002] The welding of air ducts generally adopts two processing methods: girth welding or straight seam welding. When welding air ducts with larger diameters, if girth welding is used, a large construction site is required, and multiple sections of large-diameter air ducts occupy a large area after being segmented. It is very inconvenient to carry during processing and the processing efficiency is low. The straight seam automatic welding machine is used to weld multiple sections of straight metal sheets together and then weld them along a straight line to form a circular or square air duct. It is mainly used in the production of large air ducts and H-shaped steel.

[0003] At present, the existing utility model with publication number CN215846562U discloses a pipe welding machine that is convenient for fixing circular pipes, including a welding machine, a fixing device and a fixing plate, at least four fixing devices are provided on the fixing plate, the main body of the fixing device is a cube, a circular hole is provided in the middle of the fixing device, and telescopic devices are provided on the upper, lower, left and right four surfaces of the fixing device, the telescopic devices extend into the circular hole in the fixing device, the telescopic devices are connected to a rotating wheel in the circular hole, the axis of the rotating wheel is parallel to the axis of the circular hole, at least two telescopic rods are provided on the fixing plate, the telescopic rods are vertically installed on the fixing plate, the top of the telescopic rods is connected to a beam, a welding machine is connected to the beam, and the welding head of the welding machine is facing downward.

[0004] In the above scheme, when straight seam welding the pipe, the workers need to push the pipe for a long time to move it, which causes high labor intensity for the workers. In addition, the workers cannot keep the speed of pushing the pipe to move consistent, thus affecting the stability of the straight seam welding of the pipe. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide an automatic welding device for the duct of an axial flow fan. By providing a welding mechanism, the automation of the straight seam welding of the duct can be realized, which solves the problem of the existing technology that the staff needs to push the duct to move for straight seam welding, thereby reducing the labor intensity of the staff and ensuring the stability of the duct during straight seam welding.

[0006] The solution of the utility model to solve the technical problem is:

[0007] An automatic welding device for an axial fan duct comprises a support platform, two welding beams are symmetrically fixed to the upper end of the support platform, the upper ends of the two welding beams are fixed to the same support plate, two guide rails are mounted on the support plate, one of the guide rails passes through the support plate, and the other guide rail is arranged at the lower end of the support plate, one of the guide rails is slidably connected to a sliding rod, a side wall of the sliding rod is provided with a pressing assembly, and the other guide rail is slidably connected to a mounting frame, a first transmission assembly is provided at the upper end of the support plate, a second transmission assembly and a welding mechanism are provided on the mounting frame, and the welding mechanism comprises a welding gun, a swinging assembly and a moving assembly.

[0008] When straight seam welding is required for the wind duct, the wind duct is placed on the upper end of the supporting platform, and the seam to be welded of the wind duct is placed between the two welding beams. The first transmission component is started to drive the slide bar to move downward, so that the pressing component is pressed against the inner wall of the wind duct, thereby fixing the wind duct. The moving component is started to drive the welding gun to the required position, so that the wind duct can be welded. The second transmission component is started to drive the welding gun to move downward, and the swing component is started at the same time to drive the welding gun to swing left and right continuously, so that the weld can be evenly filled, the welding strength is enhanced, the welding strength and toughness are improved, and the occurrence of cracks is reduced, so that the wind duct can be effectively straight-seamed welded.

[0009] By providing a welding mechanism, the automation of the straight seam welding of the wind tube can be realized, which solves the problem of the existing technology that workers need to push the wind tube to move for straight seam welding, thereby reducing the labor intensity of the workers and ensuring the stability of the wind tube during straight seam welding.

[0010] The utility model is further configured as follows: the pressing assembly includes a plurality of compression springs fixed on the side wall of the slide rod, and the ends of the plurality of compression springs are fixed with the same pressing plate.

[0011] With the above technical solution, when the air duct needs to be fixed, one of the transmission components drives the pressure plate to move downward, and at the same time, the compression spring presses the pressure plate against the inner wall of the air duct, thereby fixing the air duct.

[0012] The utility model is further configured as follows: the first transmission assembly includes a first rack fixed on the side wall of the slide rod, wherein a connecting shaft is rotatably connected to the side wall of one of the welded beams, one end of the connecting shaft is fixed with a first gear meshing with the first rack, the other end of the connecting shaft is fixed with a first bevel gear, the upper end of the support plate is fixed with a first servo motor, and the output end of the first servo motor is fixed with a second bevel gear meshing with the first bevel gear.

[0013] Through the technical scheme, when the slide rod needs to be moved, the first servo motor is started to drive the second bevel gear to rotate, the second bevel gear drives the first bevel gear to rotate, the first bevel gear drives the first gear to rotate through the connecting shaft, and the slide rod is moved under the action of the first rack.

[0014] The utility model further sets up: second transmission subassembly includes the second rack fixed on the guide rail lateral wall, the second servo motor is fixed in the mounting frame, and the output end of second servo motor is fixed with the second gear that meshes with the second rack.

[0015] Through the technical scheme, when the mounting frame needs to be moved, the second servo motor is started to drive the second gear to rotate, and the mounting frame is moved under the action of the second rack.

[0016] The utility model further sets up: swing subassembly includes the frame fixed on the mounting frame lateral wall, and the lower end of frame is fixed with two slide rails, and the first sliding block is slidably connected on the slide rail, and the lower end of multiple first sliding blocks is fixed with the same connecting plate, and the upper end of connecting plate is screwed with the threaded rod, and the both ends of threaded rod are rotatably connected on the lateral wall of frame, and the third servo motor is fixed on the lateral wall of frame, and the output end of third servo motor is fixedly connected with the end of threaded rod, and the moving assembly is arranged on the lower end of connecting plate, and the welding torch is arranged on the moving assembly.

[0017] Through the technical scheme, when the welding torch needs to be swung left and right continuously, the third servo motor is started to drive the threaded rod to continuously reverse, so that the moving assembly is swung left and right continuously through the connecting plate, and the welding torch can be swung left and right continuously.

[0018] The utility model further sets up: the moving assembly includes two round rods fixed symmetrically on the lower end of connecting plate, and the same second sliding block is slidably connected on the two round rods, and the welding torch is fixed on the lower end of second sliding block, and the servo electric cylinder is fixed on the lateral wall of connecting plate, and the hydraulic rod of servo electric cylinder is fixed on the lateral wall of second sliding block.

[0019] Through the technical scheme, when the welding torch needs to be moved, the servo electric cylinder is started, so that the welding torch can be moved.

[0020] The utility model further sets up: the lower end of abutting plate is arc type.

[0021] Through the technical scheme, when one group of transmission assemblies drives the abutting plate to move downwards, the lower end of the abutting plate is prevented from abutting against the upper end of the air cylinder, so that damage to the air cylinder is prevented, and the abutting plate can be effectively abutted against the inner wall of the air cylinder.

[0022] The utility model further sets up: the abutting plate is arc type.

[0023] Through the above technical solution, the pressure plate can be effectively pressed against the inner wall of the air duct, while preventing damage to the inner wall of the air duct.

[0024] The beneficial effects of the utility model are:

[0025] Compared with the existing technology, the welding mechanism is provided to realize the automation of the straight seam welding of the wind tube, which solves the problem that the existing technology requires workers to push the wind tube to move for straight seam welding, thereby reducing the labor intensity of the workers and ensuring the stability of the wind tube during straight seam welding.

[0026] The arc-shaped arrangement of the pressing plate allows the pressing plate to be effectively pressed against the inner wall of the air duct, while preventing damage to the inner wall of the air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0028] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the utility model;

[0029] Figure 3 It is a three-dimensional structural schematic diagram of the utility model;

[0030] Figure 4 is a side view of the mounting frame, the second transmission assembly and the welding mechanism;

[0031] Figure 5 It is a schematic diagram of the three-dimensional structure of the mounting frame, the second transmission assembly and the welding mechanism.

[0032] Figure markings: 1. Support platform; 2. Welding beam; 3. Support plate; 4. Guide rail; 5. Slide rod; 6. Mounting frame; 7. Welding gun; 8. Compression spring; 9. Pressure plate; 10. First rack; 11. Connecting shaft; 12. First gear; 13. First bevel gear; 14. First servo motor; 15. Second bevel gear; 16. Second rack; 17. Second servo motor; 18. Second gear; 19. Frame; 20. Slide rail; 21. First slider; 22. Connecting plate; 23. Threaded rod; 24. Third servo motor; 25. Round rod; 26. Second slider; 27. Servo electric cylinder; 2701. Hydraulic rod. DETAILED DESCRIPTION

[0033] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0034] The following references Figures 1 to 5 The present utility model will be described.

[0035] An automatic welding device for an axial flow fan duct includes a support platform 1, two welding beams 2 are symmetrically fixed to the upper end of the support platform 1, the upper ends of the two welding beams 2 are fixed to the same support plate 3, two guide rails 4 are installed on the support plate 3, one of the guide rails 4 is arranged through the support plate 3, and the other guide rail 4 is arranged at the lower end of the support plate 3, one of the guide rails 4 is slidably connected to a slide rod 5, a side wall of the slide rod 5 is provided with a pressing assembly, and the other guide rail 4 is slidably connected to a mounting frame 6, the upper end of the support plate is provided with a first transmission assembly, and the mounting frame 6 is provided with a second transmission assembly and a welding mechanism, and the welding mechanism includes a welding gun 7, a swinging assembly and a moving assembly.

[0036] When it is necessary to perform straight seam welding on the wind tube, place the wind tube on the upper end of the supporting platform 1, and make the seam to be welded of the wind tube rest between the two welding beams 2, start the first transmission component, drive the slide bar 5 to move downward, so that the pressing component presses against the inner wall of the wind tube, thereby fixing the wind tube, start the moving component, drive the welding gun 7 to move to the required position, so that the wind tube can be welded, start the second transmission component, drive the welding gun 7 to move downward, and at the same time start the swing component, drive the welding gun 7 to swing left and right continuously, so that the weld can be evenly filled, the welding strength is enhanced, the welding strength and toughness are improved, and the occurrence of cracks is reduced, so that the wind tube can be effectively straight seam welded.

[0037] By providing a welding mechanism, the automation of the straight seam welding of the wind tube can be realized, which solves the problem of the existing technology that workers need to push the wind tube to move for straight seam welding, thereby reducing the labor intensity of the workers and ensuring the stability of the wind tube during straight seam welding.

[0038] The pressing assembly includes a plurality of compression springs 8 fixed on the side wall of the slide rod 5 , and the ends of the plurality of compression springs 8 are fixed with a same pressing plate 9 .

[0039] When the air duct needs to be fixed, the pressure plate 9 is driven downward by one of the transmission components, and at the same time, the pressure plate 9 is pressed against the inner wall of the air duct under the action of the compression spring 8, thereby fixing the air duct.

[0040] The first transmission assembly includes a first rack 10 fixed to the side wall of the slide rod 5, a connecting shaft 11 is rotatably connected to the side wall of one of the welding beams 2, a first gear 12 meshing with the first rack 10 is fixed to one end of the connecting shaft 11, a first bevel gear 13 is fixed to the other end of the connecting shaft 11, a first servo motor 14 is fixed to the upper end of the support plate 3, and a second bevel gear 15 meshing with the first bevel gear 13 is fixed to the output end of the first servo motor 14.

[0041] When it is necessary to drive the slide rod 5 to move, the first servo motor 14 is started to drive the second bevel gear 15 to rotate. The rotation of the second bevel gear 15 drives the first bevel gear 13 to rotate. The rotation of the first bevel gear 13 drives the first gear 12 to rotate through the connecting shaft 11, thereby driving the slide rod 5 to move under the action of the first rack 10.

[0042] The second transmission assembly includes a second rack 16 fixed to the side wall of the guide rail 4 , a second servo motor 17 is fixed in the mounting frame 6 , and a second gear 18 meshing with the second rack 16 is fixed to the output end of the second servo motor 17 .

[0043] When the mounting bracket 6 needs to be driven to move, the second servo motor 17 is started to drive the second gear 18 to rotate, thereby driving the mounting bracket 6 to move under the action of the second rack 16.

[0044] The swing assembly includes a frame 19 fixed to the side wall of the mounting frame 6, and two slide rails 20 are symmetrically fixed to the lower end of the frame 19. A first slider 21 is slidably connected to the slide rail 20, and the lower ends of multiple first sliders 21 are fixed with the same connecting plate 22. The upper end of the connecting plate 22 is screwed with a threaded rod 23, and the two ends of the threaded rod 23 are rotatably connected to the side wall of the frame 19. A third servo motor 24 is fixed to the side wall of the frame 19, and the output end of the third servo motor 24 is fixedly connected to the end of the threaded rod 23. The moving assembly is arranged at the lower end of the connecting plate 22, and the welding gun 7 is arranged on the moving assembly.

[0045] When it is necessary to drive the welding gun 7 to swing left and right continuously, the third servo motor 24 is started to drive the threaded rod 23 to continuously rotate forward and reverse, thereby driving the moving assembly to swing left and right continuously through the connecting plate 22, thereby driving the welding gun 7 to swing left and right continuously.

[0046] The moving assembly includes two round rods 25 symmetrically fixed at the lower end of the connecting plate 22, and the same second slider 26 is slidably connected to the two round rods 25. The welding gun 7 is fixed at the lower end of the second slider 26. A servo electric cylinder 27 is fixed on the side wall of the connecting plate 22, and the hydraulic rod 2701 of the servo electric cylinder 27 is fixed on the side wall of the second slider 26.

[0047] When the welding gun 7 needs to be driven to move, the servo electric cylinder 27 is started, thereby driving the welding gun 7 to move.

[0048] The lower end of the pressing plate 9 is arc-shaped.

[0049] When the pressure plate 9 is driven downward by one of the transmission components, the lower end of the pressure plate 9 is prevented from abutting against the upper end of the wind tube, thereby preventing damage to the wind tube, and at the same time, the pressure plate 9 can be effectively pressed against the inner wall of the wind tube.

[0050] The pressing plate 9 is arranged in an arc shape.

[0051] The pressing plate 9 can be effectively pressed against the inner wall of the air duct while preventing damage to the inner wall of the air duct.

[0052] Working principle:

[0053] When it is necessary to perform straight seam welding on the wind tube, the wind tube is placed on the upper end of the supporting platform 1, and the seam to be welded of the wind tube is placed between the two welding beams 2, and the first servo motor 14 is started to drive the second bevel gear 15 to rotate, and the rotation of the second bevel gear 15 drives the first bevel gear 13 to rotate, and the rotation of the first bevel gear 13 drives the first gear 12 to rotate through the connecting shaft 11, thereby driving the slide bar 5 to move under the action of the first rack 10, so that the pressure plate 9 is pressed against the inner wall of the wind tube under the action of the compression spring 8, thereby fixing the wind tube, starting the servo electric cylinder 27, and driving the welding gun 7 to move to the required position, so that it can To weld the wind tube, start the second servo motor 17 to drive the second gear 18 to rotate, thereby driving the mounting frame 6 to move under the action of the second rack 16, thereby driving the welding gun 7 to move downward, and at the same time start the third servo motor 24 to drive the threaded rod 23 to continuously rotate forward and reverse, thereby driving the moving assembly to swing left and right continuously through the connecting plate 22, thereby driving the welding gun 7 to swing left and right continuously, thereby evenly filling the weld seam, enhancing welding strength, improving welding strength and toughness, and reducing the occurrence of cracks, so that the wind tube can be effectively straight-seamed welded.

[0054] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications based on the above assumptions should also be regarded as within the scope of protection of the present invention.

Claims

1. An automatic welding device for an axial flow fan duct, comprising a support platform (1), characterized in that: Two welding beams (2) are symmetrically fixed to the upper end of the support platform (1), and the upper ends of the two welding beams (2) are fixed to the same support plate (3). Two guide rails (4) are installed on the support plate (3), one of which is arranged through the support plate (3), and the other is arranged at the lower end of the support plate (3). A slide bar (5) is slidably connected to one of the guide rails (4), and a pressing assembly is provided on the side wall of the slide bar (5). A mounting frame (6) is slidably connected to the other guide rail (4). A first transmission assembly is provided at the upper end of the support plate, and a second transmission assembly and a welding mechanism are provided on the mounting frame (6). The welding mechanism includes a welding gun (7), a swing assembly and a moving assembly.

2. The automatic welding device for an axial flow fan duct according to claim 1, characterized in that: The pressing assembly comprises a plurality of compression springs (8) fixed on the side wall of the slide rod (5), and the ends of the plurality of compression springs (8) are fixed with a same pressing plate (9).

3. The automatic welding device for an axial flow fan duct according to claim 1, characterized in that: The first transmission assembly includes a first rack (10) fixed on the side wall of the slide bar (5), a connecting shaft (11) is rotatably connected to the side wall of one of the welded beams (2), a first gear (12) meshing with the first rack (10) is fixed to one end of the connecting shaft (11), a first bevel gear (13) is fixed to the other end of the connecting shaft (11), a first servo motor (14) is fixed to the upper end of the support plate (3), and a second bevel gear (15) meshing with the first bevel gear (13) is fixed to the output end of the first servo motor (14).

4. The automatic welding device for an axial flow fan duct according to claim 1, characterized in that: The second transmission assembly includes a second rack (16) fixed on the side wall of the guide rail (4), a second servo motor (17) fixed in the mounting frame (6), and a second gear (18) meshing with the second rack (16) fixed at the output end of the second servo motor (17).

5. The automatic welding device for an axial flow fan duct according to claim 1, characterized in that: The swing assembly includes a frame (19) fixed on the side wall of the mounting frame (6), two slide rails (20) are symmetrically fixed on the lower end of the frame (19), a first slider (21) is slidably connected to the slide rail (20), a same connecting plate (22) is fixed to the lower end of the plurality of first sliders (21), a threaded rod (23) is screwed to the upper end of the connecting plate (22), both ends of the threaded rod (23) are rotatably connected to the side wall of the frame (19), a third servo motor (24) is fixed on the side wall of the frame (19), an output end of the third servo motor (24) is fixedly connected to the end of the threaded rod (23), a moving assembly is arranged at the lower end of the connecting plate (22), and a welding gun (7) is arranged on the moving assembly.

6. The automatic welding device for an axial flow fan duct according to claim 5, characterized in that: The moving assembly includes two round rods (25) symmetrically fixed to the lower end of the connecting plate (22), the two round rods (25) are slidably connected to the same second slider (26), the welding gun (7) is fixed to the lower end of the second slider (26), a servo electric cylinder (27) is fixed to the side wall of the connecting plate (22), and a hydraulic rod (2701) of the servo electric cylinder (27) is fixed to the side wall of the second slider (26).

7. The automatic welding device for an axial flow fan duct according to claim 2, characterized in that: The lower end of the pressing plate (9) is arc-shaped.

8. The automatic welding device for an axial flow fan duct according to claim 2, characterized in that: The pressing plate (9) is arranged in an arc shape.

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