Airtight intelligent welding device and method for composite material air intake tooling

Abstract

The present invention provides an airtight intelligent welding device and method for composite material air intake duct tooling, and relates to the field of airtight welding technology. The airtight intelligent welding device for composite material air intake duct tooling comprises a welding processing workbench, the upper surface of which is fixedly connected to two symmetrically arranged supporting and mounting frames, and a cylindrical welding shell is fixedly connected between the two supporting and mounting frames. In the present invention, the carbon dioxide generator is started, and the carbon dioxide generated by the carbon dioxide generator enters the inside of the right conical shell through the second connecting pipe, and then enters the inside of the cylindrical welding shell through the right conical shell. At the same time, the induced draft fan is started, and the induced draft fan is installed to extract the air inside the cylindrical welding shell through the first connecting pipe, and cooperates with the circular cylindrical welding shell and the conical right conical shell and left conical shell, so that the oxygen in the sealed environment is not easy to hide, and the oxygen is easier to discharge, thereby improving the welding effect.

Description

Technical Field

[0001] The present invention relates to the technical field of airtight welding, and in particular to an airtight intelligent welding device and method for composite material air intake tooling. Background Art

[0002] Composite material intake duct tooling is an indispensable equipment for processing composite material intake ducts. During the production process of the tooling itself, laser welding is required to weld metal parts. During the laser welding process of metal parts, the weld pool will cause serious oxidation inside the metal parts, affecting the welding appearance and welding performance. For this phenomenon, the industry mainly adopts the method of spraying inert gas into the weld to isolate oxygen or filling carbon dioxide to drive away the air. In the former, the injection of inert gas cannot form complete oxygen isolation, and there will be a small amount of oxygen around the metal parts. In the latter, filling with carbon dioxide is often welded in a rectangular sealed space. Residual oxygen is likely to exist at the corners of the rectangular sealed space, which is difficult to be completely removed by carbon dioxide. In addition, oxygen is also easy to hide in the welds of metal parts, which all affect the quality of welding. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the present invention provides an airtight intelligent welding device and method for composite material intake duct tooling, which solves the problem that the injection of inert gas cannot form complete oxygen isolation, there will always be a small amount of oxygen around the metal parts, and the welding is often carried out in a rectangular sealed space when filling with carbon dioxide. Residual oxygen is likely to exist at the corners of the rectangular sealed space, which is difficult to be completely removed by carbon dioxide. In addition, oxygen is also likely to hide in the welds of the metal parts. These are all problems that affect the welding quality.

[0005] (II) Technical solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an airtight intelligent welding device for composite material air intake tooling, comprising a welding processing workbench, the upper surface of which is fixedly connected to two symmetrically arranged supporting and mounting frames, a cylindrical welding shell is fixedly connected between the two supporting and mounting frames, one end of the cylindrical welding shell is fixedly connected to a left conical shell, the end of the left conical shell away from the cylindrical welding shell is connected to an exhaust assembly, the other end of the cylindrical welding shell is fixedly connected to a right conical shell, the end of the right conical shell away from the cylindrical welding shell is connected to a carbon dioxide supply assembly, the top of the outer surface of the cylindrical welding shell is connected to a welding assembly, a U-shaped mounting pipe is penetrated through the rear side of the outer surface of the cylindrical welding shell, both ends of the U-shaped mounting pipe are fixedly connected to a rectangular mounting frame, and the two rectangular mounting frames are fixedly connected to the left conical shell. The opposite sides of the mounting frame are fixedly connected to a rubber fitting frame, and the outer surface of the U-shaped mounting pipe is fixedly connected to a third connecting pipe, and the end of the third connecting pipe away from the U-shaped mounting pipe is fixedly connected to a connecting hose, and the end of the connecting hose away from the third connecting pipe is fixedly connected to a fourth connecting pipe, and the end of the fourth connecting pipe away from the connecting hose is connected to an exhaust assembly, and a first power assembly for driving the U-shaped mounting pipe to move is installed on the rear side of the outer surface of the cylindrical welding shell, and a U-shaped mounting seat is fixedly connected to the bottom of the inner wall of the cylindrical welding shell, and a fixed limiting sleeve rod is fixedly connected to the inner wall of the U-shaped mounting seat, and two horizontal connecting threaded blocks are sleeved on the outer surface of the fixed limiting sleeve rod, and a second power assembly for driving the two horizontal connecting threaded blocks to move is installed on the side wall of the U-shaped mounting seat, and a clamping assembly is connected between the two horizontal connecting threaded blocks.

[0007] Preferably, the exhaust assembly includes an installed induced draft fan fixedly connected to the upper surface of the welding processing workbench, the inlet of the installed induced draft fan is fixedly connected with a first connecting pipe, the end of the first connecting pipe away from the installed induced draft fan is fixedly connected to one end of the left conical shell, the end of the fourth connecting pipe away from the connecting hose is fixedly connected to the first connecting pipe, the installed induced draft fan is started, and the installed induced draft fan extracts air inside the cylindrical welding shell through the first connecting pipe.

[0008] Preferably, the carbon dioxide supply assembly includes a carbon dioxide generator fixedly connected to the upper surface of the welding processing workbench, the outlet of the carbon dioxide generator is fixedly connected to a second connecting pipe, the end of the second connecting pipe away from the carbon dioxide generator is fixedly connected to one end of the right conical shell, the carbon dioxide generator is started, and the carbon dioxide generated by the carbon dioxide generator enters the interior of the right conical shell through the second connecting pipe, and then enters the interior of the cylindrical welding shell through the right conical shell.

[0009] Preferably, the welding assembly includes a gantry mounting frame fixedly connected to the top of the outer surface of the cylindrical welding shell, the top of the gantry mounting frame is fixedly connected to a first driving cylinder, the piston end of the first driving cylinder extends to the interior of the cylindrical welding shell and is fixedly connected to an L-shaped mounting plate body, and the side wall of the L-shaped mounting plate body is connected to a welding head through an adjusting assembly.

[0010] Preferably, the adjustment component includes a second driving cylinder fixedly connected to the side wall of the L-shaped mounting plate, the piston end of the second driving cylinder is fixedly connected to the horizontally movable vertical plate, the welding head is fixedly connected to the side wall of the horizontally movable vertical plate, the horizontally movable vertical plate is slidingly connected to the L-shaped mounting plate, the first driving cylinder is started, the piston end of the first driving cylinder brings the L-shaped mounting plate down, so that the L-shaped mounting plate brings the welding head down for welding, the second driving cylinder is started, the piston end of the second driving cylinder brings the welding head to move linearly through the horizontally movable vertical plate for welding.

[0011] Preferably, the first power assembly includes a connecting and fixing seat fixedly connected to the rear side of the outer surface of the cylindrical welding shell, a third driving cylinder is fixedly connected to the side wall of the connecting and fixing seat, a linkage mounting strip is fixedly connected to the piston end of the third driving cylinder, and the linkage mounting strip is fixedly connected to the U-shaped mounting pipe.

[0012] Preferably, the second power assembly includes a first servo motor fixedly connected to the side wall of the U-shaped mounting seat, the output shaft of the first servo motor is fixedly connected to a threaded rotating rod, one end of the threaded rotating rod away from the first servo motor is rotatably connected to the inner wall of the U-shaped mounting seat, and the two horizontally connecting threaded blocks are both threadedly connected to the outer surface of the threaded rotating rod.

[0013] Preferably, the clamping assembly includes two vertical mounting plates, and the two vertical mounting plates are respectively connected to the upper surfaces of two horizontally connected threaded blocks, and the side walls of the vertical mounting plates are rotatably connected to a mounting shaft, and the end of the mounting shaft is fixedly connected to an electric clamp, and a second servo motor is fixedly connected to the side wall of one of the vertical mounting plates, and the output shaft of the second servo motor is fixedly connected to one of the mounting shafts. The first servo motor is started, and the output shaft of the first servo motor drives the threaded rotating rod to rotate. When the threaded rotating rod rotates, it drives the two horizontally connected threaded blocks closer to each other, and the two vertical mounting plates drive the two electric clamps closer to each other.

[0014] A welding method for an airtight intelligent welding device for a composite material air intake tooling, the welding method comprising the following steps:

[0015] S1. Open the sealing door on the front side of the cylindrical welding shell, place two metal parts to be welded for tooling processing on the two electric clamps respectively, start the two electric clamps to clamp the metal parts, and then start the first servo motor. The output shaft of the first servo motor drives the threaded rotating rod to rotate. When the threaded rotating rod rotates, it drives the two horizontally connected threaded blocks to move closer to each other, and the two vertically installed vertical plates drive the two electric clamps to move closer to each other, so that the welding points of the two metal parts are aligned, and then the sealing door is closed;

[0016] S2, start the carbon dioxide generator, the carbon dioxide generated by the carbon dioxide generator enters the right conical shell through the second connecting pipe, and then enters the cylindrical welding shell through the right conical shell. At the same time, start the installation induced draft fan, and the installation induced draft fan extracts air inside the cylindrical welding shell through the first connecting pipe;

[0017] S3. After the inside of the cylindrical welding shell is filled with carbon dioxide, the first connecting pipe valve is closed, the third connecting pipe valve is opened, and then the third driving cylinder is started. The piston end of the third driving cylinder carries the linkage mounting strip, and the linkage mounting strip moves with the U-shaped mounting pipe, so that the two rectangular mounting frames move straight toward the weld of the metal part, and the two rubber fitting frames are respectively fitted with the upper and lower surfaces of the metal part. The installation induced draft fan is started, and the two rubber fitting frames absorb the gas at the weld while moving through the action of the installation induced draft fan;

[0018] S4, start the first driving cylinder, the piston end of the first driving cylinder brings the L-shaped mounting plate down, so that the L-shaped mounting plate brings the welding head down for welding, start the second driving cylinder, the piston end of the second driving cylinder brings the welding head to move linearly through the horizontal moving vertical plate for welding.

[0019] (III) Beneficial effects

[0020] The present invention provides an airtight intelligent welding device and method for composite material air intake tooling, which has the following beneficial effects:

[0021] 1. The present invention starts the carbon dioxide generator, and the carbon dioxide generated by the carbon dioxide generator enters into the right conical shell through the second connecting pipe, and then enters into the cylindrical welding shell through the right conical shell. At the same time, the induced draft fan is started, and the induced draft fan extracts the air inside the cylindrical welding shell through the first connecting pipe. With the circular cylindrical welding shell and the conical right conical shell and left conical shell, it is difficult for oxygen in the sealed environment to hide, and oxygen is easier to be discharged, thereby improving the welding effect.

[0022] 2. The present invention starts the third driving cylinder, and the piston end of the third driving cylinder carries the linkage mounting strip, and the linkage mounting strip moves with the U-shaped mounting pipe, so that the two rectangular mounting frames move straight toward the weld of the metal part, and the two rubber fitting frames are respectively fitted with the upper and lower surfaces of the metal part, and the installation induced draft fan is started. Through the action of the installation induced draft fan, the two rubber fitting frames absorb the gas at the weld while moving, thereby avoiding the hiding of oxygen in the gap and further ensuring the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the three-dimensional structure from a first perspective of the airtight intelligent welding device for composite material air intake tooling provided by the present invention;

[0024] Figure 2 A schematic diagram of the three-dimensional structure from a second perspective of the airtight intelligent welding device for the composite material air intake tooling provided by the present invention;

[0025] Figure 3 A schematic diagram of the top view of the structure of the airtight intelligent welding device for the composite material air intake tooling provided by the present invention;

[0026] Figure 4 A schematic diagram of the structure of the horizontal connection thread block of the airtight intelligent welding device of the composite material air intake tooling provided by the present invention;

[0027] Figure 5 A schematic diagram of the L-shaped mounting plate structure of the airtight intelligent welding device for the composite material air intake tooling provided by the present invention;

[0028] Figure 6 A schematic diagram of the rectangular installation frame structure of the airtight intelligent welding device for the composite material air intake tooling provided by the present invention.

[0029] Among them, 1. welding processing workbench; 2. support and installation frame; 3. cylindrical welding shell; 4. left conical shell; 5. right conical shell; 6. installation of induced draft fan; 7. first connecting pipe; 8. carbon dioxide generator; 9. second connecting pipe; 10. gantry mounting frame; 11. first driving cylinder; 12. L-shaped mounting plate; 13. second driving cylinder; 14. horizontal moving vertical plate; 15. welding head; 16. U-shaped mounting pipe; 17. rectangular mounting frame; 18. rubber fitting frame; 19. third connecting pipe; 20. connecting hose; 21. fourth connecting pipe; 22. connecting fixed seat; 23. third driving cylinder; 24. linkage mounting strip; 25. U-shaped mounting seat; 26. fixed limiting sleeve rod; 27. horizontal connecting threaded block; 28. first servo motor; 29. ​​threaded rotating rod; 30. vertical mounting plate; 31. electric clamp; 32. second servo motor. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example:

[0032] like Figure 1-Figure 6 As shown, the embodiment of the present invention provides an airtight intelligent welding device for composite material air intake tooling, including a welding processing workbench 1, wherein two symmetrically arranged supporting and mounting frames 2 are fixedly connected to the upper surface of the welding processing workbench 1, a cylindrical welding shell 3 is fixedly connected between the two supporting and mounting frames 2, a sealing door is movably arranged on the front side of the cylindrical welding shell 3, one end of the cylindrical welding shell 3 is fixedly connected to a left conical shell 4, and an end of the left conical shell 4 away from the cylindrical welding shell 3 is connected to an exhaust assembly, the exhaust assembly includes an installed induced draft fan 6 fixedly connected to the upper surface of the welding processing workbench 1, an inlet of the installed induced draft fan 6 is fixedly connected to a first connecting pipe 7, an end of the first connecting pipe 7 away from the installed induced draft fan 6 is fixedly connected to one end of the left conical shell 4, and an end of the fourth connecting pipe 21 away from the connecting hose 20 is fixedly connected to the first connecting pipe 7, in the present application, valves are arranged on the pipes, the installed induced draft fan 6 is started, and the installed induced draft fan 6 extracts air inside the cylindrical welding shell 3 through the first connecting pipe 7;

[0033] The other end of the cylindrical welding shell 3 is fixedly connected to the right conical shell 5, and the end of the right conical shell 5 away from the cylindrical welding shell 3 is connected to a carbon dioxide supply assembly, which includes a carbon dioxide generator 8 fixedly connected to the upper surface of the welding processing workbench 1, and the outlet of the carbon dioxide generator 8 is fixedly connected to a second connecting pipe 9, and the end of the second connecting pipe 9 away from the carbon dioxide generator 8 is fixedly connected to one end of the right conical shell 5. When the carbon dioxide generator 8 is started, the carbon dioxide generated by the carbon dioxide generator 8 enters the inside of the right conical shell 5 through the second connecting pipe 9, and then enters the inside of the cylindrical welding shell 3 through the right conical shell 5;

[0034] The top of the outer surface of the cylindrical welding shell 3 is connected to a welding assembly, and the welding assembly includes a gantry mounting frame 10 fixedly connected to the top of the outer surface of the cylindrical welding shell 3, and the top of the gantry mounting frame 10 is fixedly connected to a first driving cylinder 11, and the piston end of the first driving cylinder 11 extends to the inside of the cylindrical welding shell 3 and is fixedly connected to an L-shaped mounting plate body 12, and the side wall of the L-shaped mounting plate body 12 is connected to a welding head 15 through an adjusting assembly, and the adjusting assembly includes a second driving cylinder 13 fixedly connected to the side wall of the L-shaped mounting plate body 12, and the second The piston end of the driving cylinder 13 is fixedly connected with the horizontal moving vertical plate 14, the welding head 15 is fixedly connected to the side wall of the horizontal moving vertical plate 14, the horizontal moving vertical plate 14 is slidably connected with the L-shaped mounting plate body 12, the first driving cylinder 11 is started, the piston end of the first driving cylinder 11 brings the L-shaped mounting plate body 12 down, so that the L-shaped mounting plate body 12 brings the welding head 15 down for welding, the second driving cylinder 13 is started, the piston end of the second driving cylinder 13 brings the welding head 15 to move linearly through the horizontal moving vertical plate 14 for welding;

[0035] A U-shaped mounting pipe 16 is provided through the rear side of the outer surface of the cylindrical welding shell 3. In the present application, the positions through the cylindrical welding shell 3 are all sliding seals to ensure the sealing of the inside and outside. Both ends of the U-shaped mounting pipe 16 are fixedly connected to a rectangular mounting frame 17, and the opposite sides of the two rectangular mounting frames 17 are fixedly connected to a rubber fitting frame 18. The outer surface of the U-shaped mounting pipe 16 is fixedly connected to a third connecting pipe 19, and the end of the third connecting pipe 19 away from the U-shaped mounting pipe 16 is fixedly connected to a connecting hose 20, and the connecting hose 20 is away from the third connecting pipe. One end of the pipe 19 is fixedly connected to a fourth connecting pipe 21, and one end of the fourth connecting pipe 21 away from the connecting hose 20 is connected to the exhaust assembly. A first power assembly for driving the U-shaped mounting pipe 16 to move is installed on the rear side of the outer surface of the cylindrical welding shell 3. The first power assembly includes a connecting fixing seat 22 fixedly connected to the rear side of the outer surface of the cylindrical welding shell 3, and a third driving cylinder 23 is fixedly connected to the side wall of the connecting fixing seat 22. The piston end of the third driving cylinder 23 is fixedly connected to a linkage mounting strip 24, and the linkage mounting strip 24 is fixedly connected to the U-shaped mounting pipe 16;

[0036] A U-shaped mounting seat 25 is fixedly connected to the bottom of the inner wall of the cylindrical welding shell 3, a fixed limiting sleeve rod 26 is fixedly connected to the inner wall of the U-shaped mounting seat 25, and two horizontally connected threaded blocks 27 are sleeved on the outer surface of the fixed limiting sleeve rod 26. A second power assembly that drives the two horizontally connected threaded blocks 27 to move is installed on the side wall of the U-shaped mounting seat 25. The second power assembly includes a first servo motor 28 fixedly connected to the side wall of the U-shaped mounting seat 25, and the output shaft of the first servo motor 28 is fixedly connected to a threaded rotating rod 29. One end of the threaded rotating rod 29 away from the first servo motor 28 is rotatably connected to the inner wall of the U-shaped mounting seat 25. The two horizontally connected threaded blocks 27 are both threadedly connected to the outer surface of the threaded rotating rod 29, and the threaded rotating rod 29 is provided with two opposite threads.

[0037] A clamping assembly is connected between the two horizontally connected threaded blocks 27, and the clamping assembly includes two vertically mounted upright plates 30, and the two vertically mounted upright plates 30 are respectively connected to the upper surfaces of the two horizontally connected threaded blocks 27, and the side walls of the vertically mounted upright plates 30 are rotatably connected to a mounting shaft, and an electric clamp 31 is fixedly connected to the end of the mounting shaft, and a second servo motor 32 is fixedly connected to the side wall of one of the vertically mounted upright plates 30, and the output shaft of the second servo motor 32 is fixedly connected to one of the mounting shafts. When the second servo motor 32 is started, the electric clamp 31 can be rotated, thereby rotating the metal parts, and two metal parts that need to be welded for tooling processing are placed on the two electric clamps 31 respectively, and the two electric clamps 31 are started to clamp the metal parts, and then the first servo motor 28 is started, and the output shaft of the first servo motor 28 rotates with the threaded rotating rod 29. When the threaded rotating rod 29 rotates, it brings the two horizontally connected threaded blocks 27 closer to each other, and the two vertically mounted upright plates 30 bring the two electric clamps 31 closer to each other, so that the welding points of the two metal parts are aligned.

[0038] A welding method for an airtight intelligent welding device for a composite material air intake tooling, the welding method comprising the following steps:

[0039] S1. Open the sealing door on the front side of the cylindrical welding shell 3, place the two metal parts to be welded for tooling processing on the two electric clamps 31 respectively, start the two electric clamps 31 to clamp the metal parts, and then start the first servo motor 28. The output shaft of the first servo motor 28 drives the threaded rotating rod 29 to rotate. When the threaded rotating rod 29 rotates, it drives the two horizontally connected threaded blocks 27 to move closer to each other, and the two vertically installed vertical plates 30 drive the two electric clamps 31 to move closer to each other, so that the welding points of the two metal parts are aligned, and then the sealing door is closed;

[0040] S2, start the carbon dioxide generator 8, the carbon dioxide generated by the carbon dioxide generator 8 enters the right conical shell 5 through the second connecting pipe 9, and then enters the cylindrical welding shell 3 through the right conical shell 5. At the same time, start the installation induced draft fan 6, and the installation induced draft fan 6 extracts air inside the cylindrical welding shell 3 through the first connecting pipe 7;

[0041] S3. After the inside of the cylindrical welding shell 3 is filled with carbon dioxide, the valve of the first connecting pipe 7 is closed, the valve of the third connecting pipe 19 is opened, and then the third driving cylinder 23 is started. The piston end of the third driving cylinder 23 carries the linkage mounting strip 24, and the linkage mounting strip 24 carries the U-shaped mounting pipe 16 to move, so that the two rectangular mounting frames 17 move straight toward the weld of the metal part, and the two rubber fitting frames 18 are respectively fitted with the upper and lower surfaces of the metal part, and the installation induced draft fan 6 is started. Through the action of the installation induced draft fan 6, the two rubber fitting frames 18 absorb the gas at the weld while moving;

[0042] S4, start the first driving cylinder 11, the piston end of the first driving cylinder 11 brings the L-shaped mounting plate 12 down, so that the L-shaped mounting plate 12 brings the welding head 15 down for welding, start the second driving cylinder 13, the piston end of the second driving cylinder 13 brings the welding head 15 to move linearly through the horizontal moving vertical plate 14 for welding.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An airtight intelligent welding device for composite material air intake duct tooling, comprising a welding processing workbench (1), characterized in that: The upper surface of the welding processing workbench (1) is fixedly connected to two symmetrically arranged supporting and mounting frames (2); a cylindrical welding shell (3) is fixedly connected between the two supporting and mounting frames (2); one end of the cylindrical welding shell (3) is fixedly connected to a left conical shell (4); the end of the left conical shell (4) away from the cylindrical welding shell (3) is connected to an exhaust assembly; the other end of the cylindrical welding shell (3) is fixedly connected to a right conical shell (5); the end of the right conical shell (5) away from the cylindrical welding shell (3) is connected to a carbon dioxide supply assembly; the top of the outer surface of the cylindrical welding shell (3) is connected to a welding assembly; a U-shaped mounting pipe (16) is provided through the rear side of the outer surface of the cylindrical welding shell (3); both ends of the U-shaped mounting pipe (16) are fixedly connected to a rectangular mounting frame (17); the opposite sides of the two rectangular mounting frames (17) are fixedly connected to a rubber fitting frame (18); the outer surface of the U-shaped mounting pipe (16) is A third connecting pipe (19) is fixedly connected, one end of the third connecting pipe (19) away from the U-shaped installation pipe (16) is fixedly connected to a connecting hose (20), one end of the connecting hose (20) away from the third connecting pipe (19) is fixedly connected to a fourth connecting pipe (21), one end of the fourth connecting pipe (21) away from the connecting hose (20) is connected to an exhaust assembly, a first power assembly for driving the U-shaped installation pipe (16) to move is installed on the rear side of the outer surface of the cylindrical welding shell (3), a U-shaped mounting seat (25) is fixedly connected to the bottom of the inner wall of the cylindrical welding shell (3), a fixed limiting sleeve rod (26) is fixedly connected to the inner wall of the U-shaped mounting seat (25), the outer surface of the fixed limiting sleeve rod (26) is sleeved with two horizontal connecting thread blocks (27), a second power assembly for driving the two horizontal connecting thread blocks (27) to move is installed on the side wall of the U-shaped mounting seat (25), and a clamping assembly is connected between the two horizontal connecting thread blocks (27); The exhaust assembly comprises an induced draft fan (6) fixedly connected to the upper surface of the welding processing workbench (1); the inlet of the induced draft fan (6) is fixedly connected to a first connecting pipe (7); an end of the first connecting pipe (7) away from the induced draft fan (6) is fixedly connected to an end of the left conical shell (4); and an end of the fourth connecting pipe (21) away from the connecting hose (20) is fixedly connected to the first connecting pipe (7); The carbon dioxide supply assembly comprises a carbon dioxide generator (8) fixedly connected to the upper surface of the welding processing workbench (1); an outlet of the carbon dioxide generator (8) is fixedly connected to a second connecting pipe (9); an end of the second connecting pipe (9) away from the carbon dioxide generator (8) is fixedly connected to one end of the right conical shell (5); The welding assembly comprises a gantry mounting frame (10) fixedly connected to the top of the outer surface of the cylindrical welding shell (3), the top of the gantry mounting frame (10) is fixedly connected to a first driving cylinder (11), the piston end of the first driving cylinder (11) extends into the interior of the cylindrical welding shell (3) and is fixedly connected to an L-shaped mounting plate (12), and the side wall of the L-shaped mounting plate (12) is connected to a welding head (15) via an adjustment assembly; The adjustment assembly comprises a second driving cylinder (13) fixedly connected to a side wall of an L-shaped mounting plate body (12), a piston end of the second driving cylinder (13) fixedly connected to a horizontally movable vertical plate (14), the welding head (15) fixedly connected to the side wall of the horizontally movable vertical plate (14), and the horizontally movable vertical plate (14) is slidably connected to the L-shaped mounting plate body (12); The first power assembly comprises a connection fixing seat (22) fixedly connected to the rear side of the outer surface of the cylindrical welding shell (3), a third driving cylinder (23) being fixedly connected to the side wall of the connection fixing seat (22), a linkage mounting strip (24) being fixedly connected to the piston end of the third driving cylinder (23), and the linkage mounting strip (24) being fixedly connected to the U-shaped mounting pipe (16); The second power assembly comprises a first servo motor (28) fixedly connected to a side wall of the U-shaped mounting seat (25); an output shaft of the first servo motor (28) is fixedly connected to a threaded rotating rod (29); an end of the threaded rotating rod (29) away from the first servo motor (28) is rotatably connected to an inner wall of the U-shaped mounting seat (25); and the two horizontal connecting threaded blocks (27) are both threadedly connected to an outer surface of the threaded rotating rod (29); The clamping assembly comprises two vertical mounting plates (30), the two vertical mounting plates (30) being respectively connected to the upper surfaces of two horizontally connected threaded blocks (27), the side walls of the vertical mounting plates (30) being rotatably connected to mounting shafts, the ends of the mounting shafts being fixedly connected to electric clamping jaws (31), a second servo motor (32) being fixedly connected to the side walls of one of the vertical mounting plates (30), and an output shaft of the second servo motor (32) being fixedly connected to one of the mounting shafts.

2. The welding method of the airtight intelligent welding device for composite material air intake tooling according to claim 1 is characterized in that: The welding method comprises the following steps: S1, open the sealing door on the front side of the cylindrical welding shell (3), place two metal parts to be welded for tooling processing on the two electric clamps (31) respectively, start the two electric clamps (31) to clamp the metal parts, and then start the first servo motor (28), the output shaft of the first servo motor (28) drives the threaded rotating rod (29) to rotate, and when the threaded rotating rod (29) rotates, it drives the two horizontally connected threaded blocks (27) to move closer to each other, and the two vertically installed vertical plates (30) drive the two electric clamps (31) to move closer to each other, so that the welding points of the two metal parts are aligned, and then close the sealing door; S2, starting the carbon dioxide generator (8), the carbon dioxide generated by the carbon dioxide generator (8) enters the interior of the right conical shell (5) through the second connecting pipe (9), and then enters the interior of the cylindrical welding shell (3) through the right conical shell (5); at the same time, starting the induced draft fan (6), the induced draft fan (6) extracts air from the interior of the cylindrical welding shell (3) through the first connecting pipe (7); S3. After the interior of the cylindrical welding shell (3) is filled with carbon dioxide, the valve of the first connecting pipe (7) is closed, the valve of the third connecting pipe (19) is opened, and then the third driving cylinder (23) is started. The piston end of the third driving cylinder (23) moves with the linkage mounting strip (24), and the linkage mounting strip (24) moves with the U-shaped mounting pipe (16), so that the two rectangular mounting frames (17) move linearly toward the weld of the metal part, and the two rubber fitting frames (18) are respectively fitted with the upper and lower surfaces of the metal part. The installation induced draft fan (6) is started, and through the action of the installation induced draft fan (6), the two rubber fitting frames (18) absorb gas at the weld while moving; S4, start the first driving cylinder (11), the piston end of the first driving cylinder (11) moves the L-shaped mounting plate (12) downward, so that the L-shaped mounting plate (12) moves the welding head (15) downward for welding, and start the second driving cylinder (13), the piston end of the second driving cylinder (13) moves the welding head (15) linearly through the horizontal moving vertical plate (14) for welding.

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