Swing arm welding device

Abstract

The invention discloses a swing arm welding device, and relates to the technical field of swing arm welding. The welding speed is increased; comprising a support and a welding part, a fixing seat is fixed to the outer wall of the top of the support, fixing plates are fixed to the outer walls of the two sides of the fixing seat, a placing machine table is fixed to the outer walls of the fixing plates, and a swing arm body clamped and fixed through a clamp is arranged on the placing machine table; the second air cylinder is fixed to the outer wall of the top of the containing machine table, and the second clamping plate is fixed to the output end of the second air cylinder. According to the welding mechanical arm, two sets of swing arm bodies needing to be welded can be fixed at a time by arranging the two sets of containing machine tables, and therefore after the swing arm bodies fixed to one containing machine table are welded, the welding mechanical arm can be rapidly switched to the other containing machine table to weld the fixed swing arm bodies; and when a plurality of swing arm main bodies are welded, seamless connection in the welding process is ensured, and the welding efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of swing arm welding, and in particular to a swing arm welding device. Background Art

[0002] In the prior art, the automobile swing arm is a key component of the suspension system, connecting the wheel and the body, providing support and guidance. It is primarily made of aluminum alloy or high-strength steel. Automobile swing arm welding is a critical manufacturing process that directly impacts the performance and safety of the automobile suspension system. Automobile swing arms are primarily welded manually or by machine. However, manual welding is inefficient and harmful to worker health, and is gradually being phased out. Currently, machine welding has become the primary welding method.

[0003] After searching, the Chinese patent application number 202410996618.1 discloses a welding device for an automobile chassis swing arm assembly, including a fixing frame, the bottom outer wall of the fixing frame is fixedly connected to a support foot, and the right outer wall of the fixing frame is fixedly connected to a first motor.

[0004] The automobile chassis swing arm assembly welding device in the above patent has the following shortcomings: the welding equipment cannot work during the process of removing the workpiece after welding is completed, and the welding equipment can only continue welding after a new workpiece to be welded is fixed. Therefore, it is impossible to achieve seamless connection between the upper and lower workpieces, affecting welding efficiency. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a swing arm welding device.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A swing arm welding device includes a support and a welding part, wherein a fixed seat is fixed to the top outer wall of the support, and fixed plates are fixed to the outer walls on both sides of the fixed seat, and a placement machine is fixed to the outer wall of the fixed plate, and a swing arm main body is provided on the placement machine for clamping and fixing by a clamp, the clamp includes clamping plate 2 and cylinder 2, the cylinder 2 is fixed to the top outer wall of the placement machine, and the clamping plate 2 is fixed to the output end of cylinder 2, the clamp also includes clamping plate 1 and cylinder 1, the cylinder 1 is fixed to the top outer wall of the placement machine, and the clamping plate 1 is fixed to the output end of cylinder 1.

[0008] Preferably: a connecting plate is fixed at the bottom of the placing machine, and pads are welded between multiple connecting plates, a through hole opened on the surface of the pad is movably connected to a lining rod, and a gasket is welded on the outer wall of the lining rod, and a spring is clamped between the gasket and the pad, and a buffer seat is welded on the top of the lining rod.

[0009] Furthermore: a switching cylinder is welded to the outer wall of the bottom of the pad through an intermediate column, and a fan-shaped plate is welded to the top of the switching cylinder, and a negative pressure dust suction part is connected to the bottom of the switching cylinder.

[0010] Furthermore: the negative pressure dust suction part includes a mounting plate and a negative pressure fan, the mounting plate is fixed to the outer wall of the bottom of the placement machine, and the negative pressure fan is fixed to the outer wall of one side of the mounting plate.

[0011] As a preferred solution of the present invention: the output end of the negative pressure fan is fixed with an air pipe in an embedded manner, and the end of the air pipe away from the negative pressure fan is threadedly connected to a stuffing box, and the stuffing box and the bottom of the switching cylinder are connected by a bend pipe, and the stuffing box is filled with filler.

[0012] As a further solution of the present invention: a pipeline is welded on the circumferential outer wall of the switching cylinder, and a negative pressure dust reduction component is connected to one end of the pipeline, the circumferential inner wall of the switching cylinder is movably connected to the inner cylinder, and the side wall of the inner cylinder is provided with air holes used in conjunction with the pipeline, the top side wall of the inner cylinder is welded with fan-shaped plate 2, and the side wall of fan-shaped plate 2 is welded with a rotating column, and the bottom of the lining rod is provided with a sliding groove adapted to the outer diameter of the rotating column, the circumferential outer wall of the rotating column is provided with an arc groove, the bottom outer wall of the lining rod is welded with a driving plate, and the side wall of the driving plate is welded with a driving block used in conjunction with the arc groove.

[0013] As a further solution of the present invention: the negative pressure dust reduction assembly includes a negative pressure cylinder and a vertical plate, the vertical plate is fixed to the outer wall of the bottom of the placement machine, and the negative pressure cylinder is fixed to the outer wall of one side of the vertical plate, and the circumferential inner wall of the negative pressure cylinder is movably connected with a negative pressure driving plate, and a spring 2 is clamped between the outer wall of one side of the negative pressure driving plate and the inner wall of one side of the negative pressure cylinder, a gas cylinder is fixed to the inner wall of one side of the mounting plate by screws, and the circumferential inner wall of the gas cylinder is movably connected with a piston plate 1, and the piston plate 1 and the negative pressure driving plate are connected and fixed by a piston rod, the top and bottom of the gas cylinder are respectively connected with a one-way valve 1 and a one-way valve 2 by threads, and the top of the one-way valve 1 is connected to a dust reduction liquid storage assembly.

[0014] Based on the above scheme: the dust reduction liquid storage assembly includes a water tank and a tee pipe, the water tank is fixed to the outer wall of one side of the connecting plate, and the tee pipe is fixed to the side wall of the placement machine by embedding, and the water tank and the tee pipe are connected by a water pipe, and an atomizing nozzle is fixed at the end of the tee pipe.

[0015] On the basis of the above-mentioned solution: the welding part includes a welding robot arm fixed to the outer wall of the top of the fixing seat, and a welding gun is installed at the end of the welding robot arm.

[0016] Based on the above solution: a control cabinet is fixed to the outer wall of the top of the support.

[0017] The beneficial effects of the present invention are:

[0018] 1. A swing arm welding device, which is equipped with two sets of placement machines, can fix two sets of swing arm bodies that need to be welded at one time. After the swing arm bodies fixed on one placement machine are welded, the welding robot arm can quickly switch to the other placement machine to weld the swing arm bodies fixed there. When welding multiple swing arm bodies, the welding process is ensured to be seamless, thereby improving welding efficiency.

[0019] 2. A swing arm welding device, which utilizes a spring and a buffer seat to provide buffering protection for the swing arm body, and can also serve as a "switch" to switch between dust suction and dust reduction, thereby realizing dust suction and dust reduction for welding fumes during the welding process, and improving the treatment effect of welding fumes.

[0020] 3. A swing arm welding device, in which the swing arm body uses its own weight to indirectly drive the overlap of the fan-shaped plate 2 and the fan-shaped plate during welding. After the negative pressure fan is started, the negative pressure is used to absorb the welding dust generated during the welding process through the filler.

[0021] 4. A swing arm welding device. When the swing arm body is removed after welding, the fan plate 2 is reset under the action of the spring's rebound force. After the negative pressure fan is started, the negative pressure is used to indirectly drive the piston plate 1 to move along the inside of the gas cylinder, so that the dust reduction liquid in the water tank is atomized and sprayed out from the atomizing nozzle under the action of air, thereby reducing the welding dust.

[0022] 5. A swing arm welding device is provided with a stuffing box for storing stuffing. By threading the air pipe and the stuffing box, it is easy to take out and replace the stuffing when the stuffing reaches the end of its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a swing arm welding device proposed by the present invention;

[0024] Figure 2 This is a schematic diagram of the installation structure of the smoke treatment part of the swing arm welding device proposed by the present invention;

[0025] Figure 3 This is a schematic diagram of the bottom structure of a smoke and dust treatment unit of a swing arm welding device proposed by the present invention;

[0026] Figure 4 This is a schematic diagram of the main structure of the smoke and dust treatment part of the swing arm welding device proposed by the present invention;

[0027] Figure 5 This is a schematic diagram of the explosion structure of the main body of the smoke and dust treatment part of the swing arm welding device proposed by the present invention;

[0028] Figure 6This is a schematic diagram of the adsorption filler installation structure of a swing arm welding device proposed by the present invention;

[0029] Figure 7 This is a schematic diagram of the installation structure of a dust suppression liquid storage assembly of a swing arm welding device proposed by the present invention;

[0030] Figure: Support 1; Control cabinet 2; Clamping plate 1 3; Fixing plate 4; Welding robot 5; Placement table 6; Fixing seat 7; Cylinder 1 8; Swing arm body 9; Clamping plate 2 10; Cylinder 2 11; Buffer seat 12; Mounting plate 13; Negative pressure fan 14; Stuffing box 15; Switching cylinder 16; Pad 17; Connecting plate 18; Negative pressure cylinder 19; Air pipe 20; Gasket 21; Spring 22; Drive plate 23; Rotating column 24; middle column 25; arc groove 26; drive block 27; lining rod 28; sector plate 29; pipeline 30; air hole 31; inner cylinder 32; sector plate 2 33; piston plate 1 34; gas cylinder 35; piston rod 36; one-way valve 1 37; spring 2 38; vertical plate 39; packing 40; negative pressure drive plate 41; one-way valve 2 42; water tank 43; atomizing nozzle 44; tee pipe 45; water pipe 46; elbow 47. DETAILED DESCRIPTION

[0031] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0032] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0033] Example 1:

[0034] A swing arm welding device, such as Figure 1 As shown, it includes a support 1 and a welding portion, the top outer wall of the support 1 is fixed with a fixing seat 7 by bolts, and the outer walls on both sides of the fixing seat 7 are fixed with fixing plates 4 by bolts, and the outer wall of the fixing plate 4 is fixed with a placement machine 6, and the placement machine 6 is provided with a swing arm body 9 clamped and fixed by a clamp, the clamp includes a clamping plate 2 10 and a cylinder 2 11, the cylinder 2 11 is fixed to the top outer wall of the placement machine 6 by bolts, and the clamping plate 2 10 is fixed to the output end of the cylinder 2 11 by bolts, the clamp also includes a clamping plate 1 3 and a cylinder 1 8, the cylinder 1 8 is fixed to the top outer wall of the placement machine 6 by bolts, and the clamping plate 1 3 is fixed to the output end of the cylinder 1 8 by bolts, and the clamping plate 1 3 and the clamping plate 2 10 are used together to fix the swing arm body 9;

[0035] In this embodiment, a placement machine 6 is provided to place the swing arm body 9 that needs to be welded. The cylinder 2 11 is used to drive the clamping plate 2 10 to move, and the cylinder 1 8 is used to drive the clamping plate 1 3 to move to clamp and fix the swing arm body 9, thereby ensuring the stability of the swing arm body 9 during welding. By providing two groups of placement machines 6, when the swing arm body 9 on one group of placement machines 6 is welded by the welding part, the welding part can be quickly switched to the other group of placement machines 6 to weld the swing arm body 9 fixed thereon, thereby avoiding the swing arm body 9 spending a long time on clamping and fixing to affect the welding efficiency.

[0036] The welding part includes a welding robot arm 5 fixed to the top outer wall of the fixing base 7 by bolts, and a welding gun is installed at the end of the welding robot arm 5;

[0037] The welding robot arm 5 is used to drive the welding gun to move to the surface of the swing arm body 9 for welding after the swing arm body 9 is clamped and fixed. The welding robot arm 5 replaces manual welding and can ensure the accuracy of welding and improve the welding effect.

[0038] The top outer wall of the support 1 is fixed with a control cabinet 2 by bolts;

[0039] By providing a control cabinet 2, the entire device can be controlled, the start and stop of the device can be controlled, and the smooth progress of welding can be ensured.

[0040] Example 2:

[0041] A swing arm welding device, such as Figures 2 to 7 As shown, in order to facilitate the treatment of smoke and dust during the welding process, this embodiment makes the following supplements on the basis of Example 1: a connecting plate 18 is fixed to the bottom of the placement machine 6 by bolts, and a plurality of connecting plates 18 are welded with backing plates 17. A through hole opened on the surface of the backing plate 17 is slidably connected to a liner rod 28, and a gasket 21 is welded to the outer wall of the liner rod 28, and a spring 22 is clamped between the gasket 21 and the backing plate 17. A buffer seat 12 is welded to the top of the liner rod 28;

[0042] In the initial stage, the height of the buffer seat 12 is higher than the top of the placement machine 6, so that if the swing arm body 9 falls accidentally during the loading process, the buffer seat 12 is used to support the swing arm body 9, and the spring 22 plays a buffering and protective role on the swing arm body 9 to prevent the swing arm body 9 from being damaged by stress.

[0043] The outer wall of the bottom of the backing plate 17 is welded with a switching cylinder 16 through an intermediate column 25, and a fan-shaped plate 29 is welded on the top of the switching cylinder 16. The bottom of the switching cylinder 16 is connected to a negative pressure dust suction part;

[0044] During the welding process, the negative pressure dust suction unit can absorb the generated smoke and dust, reducing the harm of the smoke and dust to the environment and human body.

[0045] The negative pressure dust suction unit includes a mounting plate 13 and a negative pressure fan 14. The mounting plate 13 is fixed to the outer wall of the bottom of the placement machine 6 by bolts, and the negative pressure fan 14 is fixed to the outer wall of one side of the mounting plate 13 by bolts. The output end of the negative pressure fan 14 is fixed with an air pipe 20 in an embedded manner, and the end of the air pipe 20 away from the negative pressure fan 14 is threadedly connected to a stuffing box 15, and the stuffing box 15 and the bottom of the switching cylinder 16 are connected by a bend 47. The stuffing box 15 is filled with a filler 40.

[0046] When the negative pressure blower 14 is started, the negative pressure is used to first suck the welding smoke into the switching cylinder 16 , and then enters the air pipe 20 through the elbow 47 and is adsorbed by the filler 40 .

[0047] The outer wall of the switching cylinder 16 is welded with a pipeline 30, and one end of the pipeline 30 is connected to a negative pressure dust suppression component. The inner wall of the switching cylinder 16 is rotatably connected to the inner cylinder 32, and the side wall of the inner cylinder 32 is provided with an air hole 31 used in conjunction with the pipeline 30. The top side wall of the inner cylinder 32 is welded with a sector plate 23, and the side wall of the sector plate 23 is welded with a rotating column 24, and the bottom of the lining rod 28 is provided with a sliding groove adapted to the outer diameter of the rotating column 24. The outer wall of the circumference of the rotating column 24 is provided with an arc groove 26, and the outer wall of the bottom of the lining rod 28 is welded with a driving plate 23, and the side wall of the driving plate 23 is welded with a driving block 27 used in conjunction with the arc groove 26;

[0048] When the swing arm body 9 is not placed on the placement machine 6, the fan plate 29 and the fan plate 2 33 are in a mutually misaligned state, and the air hole 31 and the pipeline 30 are in a facing state, that is, the top of the switching cylinder 16 is closed by the fan plate 29 and the fan plate 2 33. When the swing arm body 9 is placed on the placement machine 6, the weight of the swing arm body 9 itself is used to press the buffer seat 12. After the buffer seat 12 is pressed, it indirectly drives the driving block 27 to move downward in the vertical direction. During the downward movement, the driving block 27 uses the arc groove 26 to convert the vertical movement of the driving block 27 into the circular motion of the rotating column 24. During the rotation of the rotating column 24, the inner cylinder 32 and the fan plate 2 33 are driven to rotate. The fan plate 2 After rotation, 33 gradually overlaps with the outer wall of the bottom of the fan plate 29. At this time, an opening is generated at the top of the switching cylinder 16, and the air hole 31 is misaligned with the pipeline 30. When the negative pressure fan 14 is started, the negative pressure is used to suck the welding smoke into the filler 40. When the swing arm body 9 is removed after welding, the rebound force of the spring 22 is used to reset the fan plate 23 and move it back to the state of being misaligned with the fan plate 29. At this time, the air hole 31 and the pipeline 30 overlap again. When the negative pressure fan 14 is started again, the negative pressure is used to make the negative pressure dust reduction component connected to the pipeline 30 perform secondary treatment on some welding smoke in the air that has not been completely adsorbed, thereby ensuring the treatment effect of the welding smoke.

[0049] The negative pressure dust reduction assembly includes a negative pressure cylinder 19 and a vertical plate 39, the vertical plate 39 is fixed to the outer wall of the bottom of the placement machine 6 by bolts, and the negative pressure cylinder 19 is fixed to the outer wall of one side of the vertical plate 39 by bolts, and the circumferential inner wall of the negative pressure cylinder 19 is slidably connected to the negative pressure driving plate 41, and a spring 2 38 is clamped between the outer wall of one side of the negative pressure driving plate 41 and the inner wall of one side of the negative pressure cylinder 19, a gas cylinder 35 is fixed to the inner wall of one side of the mounting plate 13 by screws, and the circumferential inner wall of the gas cylinder 35 is slidably connected to the piston plate 1 34, and the piston plate 1 34 and the negative pressure driving plate 41 are connected and fixed by a piston rod 36, the top and bottom of the gas cylinder 35 are respectively connected to a one-way valve 1 37 and a one-way valve 2 42 by threads, and the top of the one-way valve 1 37 is connected to a dust reduction liquid storage assembly;

[0050] When a small amount of welding smoke that has not been completely absorbed needs to be processed, when the pipeline 30, the air hole 31 and the negative pressure fan 14 are connected, the negative pressure driving plate 41 is attracted to slide along the inner surface of the negative pressure cylinder 19 by using the negative pressure, and the spring 2 38 is compressed. During the movement, the negative pressure driving plate 41 drives the piston plate 1 34 to move along the inner wall of the gas cylinder 35 through the piston rod 36. During the movement, the piston plate 1 34 squeezes the air in the gas cylinder 35 and discharges it through the one-way valve 1 37. The pushing effect of the air can be used to discharge the dust reduction liquid in the dust reduction liquid storage assembly to reduce the welding smoke.

[0051] The dust suppression liquid storage assembly includes a water tank 43 and a tee pipe 45. The water tank 43 is fixed to the outer wall of one side of the connecting plate 18 by bolts, and the tee pipe 45 is fixed to the side wall of the placement machine 6 by embedding. The water tank 43 and the tee pipe 45 are connected by a water pipe 46. An atomizing nozzle 44 is fixed to the end of the tee pipe 45.

[0052] The connecting function of the water pipe 46 allows the dust suppression liquid in the water tank 43 to enter the three-way pipe 45, and the one-way valve 42 is used to prevent the dust suppression liquid from entering the gas cylinder 35. When the air is discharged through the gas cylinder 35 and the one-way valve 37, the dust suppression liquid is atomized and sprayed out through the atomizing nozzle 44 under the push of the air, and the generated water mist is used to suppress the welding smoke.

[0053] Working principle: When welding the swing arm body 9, when the swing arm body 9 is placed on the placement machine 6 for fixing, the weight of the swing arm body 9 is used to press the buffer seat 12. After the buffer seat 12 is pressed, the driving plate 23 and the driving block 27 are driven downward. The arc groove 26 is used to convert the vertical movement of the driving block 27 into the circular motion of the rotating column 24. During the rotation of the rotating column 24, the sector plate 23 rotates along the sector plate 29 to a position where they overlap with each other. Then, the negative pressure fan 14 is started to absorb the welding smoke generated during the welding process by using negative pressure. The absorbed welding smoke is finally adsorbed by the filler 40.

[0054] After welding is completed, the swing arm body 9 is removed from the placement machine 6. At this time, the rebound force of the spring 22 is used to reset the rotating column 24 and the fan plate 2 33. After resetting, the fan plate 2 33 is offset from each other with the fan plate 29, and the air hole 31 and the pipeline 30 are connected. At this time, when the negative pressure fan 14 is started again, the negative pressure driving plate 41 is attracted by the negative pressure. After the negative pressure driving plate 41 is attracted, it slides along the inside of the negative pressure cylinder 19. In this process, the piston plate 1 34 squeezes the air in the gas cylinder 35 during the synchronous movement. The squeezed air is discharged through the one-way valve 1 37 and then pushes the dust reduction liquid in the water tank 43. Finally, the dust reduction liquid is atomized and sprayed out through the atomizing nozzle 44 to reduce the welding dust.

[0055] The above is a preferred specific embodiment of the present invention, and the scope of protection of the present invention is not limited thereto. Any modifications, equivalent substitutions and improvements made by any technician familiar with the field within the technical scope disclosed by the present invention in combination with existing technologies or public common sense, within the spirit and principles of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A swing arm welding device, comprising a support (1) and a welding part, characterized in that: A fixing seat (7) is fixed to the top outer wall of the support (1), and fixing plates (4) are fixed to the outer walls on both sides of the fixing seat (7), and a placing machine (6) is fixed to the outer wall of the fixing plate (4), and a swing arm body (9) is provided on the placing machine (6) for clamping and fixing by a clamp, the clamp comprising a clamping plate 2 (10) and a cylinder 2 (11), the cylinder 2 (11) is fixed to the top outer wall of the placing machine (6), and the clamping plate 2 (10) is fixed to the output end of the cylinder 2 (11), the clamp also comprising a clamping plate 1 (3) and a cylinder 1 (8), the cylinder 1 (8) is fixed to the top outer wall of the placing machine (6), and the clamping plate 1 (3) is fixed to the output end of the cylinder 1 (8).

2. The swing arm welding device according to claim 1, characterized in that: A connecting plate (18) is fixed at the bottom of the placing machine (6), and pads (17) are welded between the multiple connecting plates (18). A through hole opened on the surface of the pad (17) is movably connected to a liner rod (28), and a gasket (21) is welded on the outer wall of the liner rod (28), and a spring (22) is clamped between the gasket (21) and the pad (17), and a buffer seat (12) is welded on the top of the liner rod (28).

3. The swing arm welding device according to claim 2, characterized in that: A switching cylinder (16) is welded to the outer wall of the bottom of the pad (17) via an intermediate column (25), and a fan-shaped plate (29) is welded to the top of the switching cylinder (16). The bottom of the switching cylinder (16) is connected to a negative pressure dust suction unit.

4. The swing arm welding device according to claim 3, characterized in that: The negative pressure dust suction unit comprises a mounting plate (13) and a negative pressure fan (14); the mounting plate (13) is fixed to the outer wall at the bottom of the placement machine (6), and the negative pressure fan (14) is fixed to the outer wall on one side of the mounting plate (13).

5. The swing arm welding device according to claim 4, characterized in that: The output end of the negative pressure fan (14) is fixed with an air pipe (20) in an embedded manner, and the end of the air pipe (20) away from the negative pressure fan (14) is threadedly connected to a stuffing box (15), and the stuffing box (15) and the bottom of the switching cylinder (16) are connected via a bent pipe (47), and the stuffing box (15) is filled with stuffing (40).

6. The swing arm welding device according to claim 5, characterized in that: The switching cylinder (16) is welded with a pipeline (30) on its circumferential outer wall, and one end of the pipeline (30) is connected to a negative pressure dust suppression component; the switching cylinder (16) is movably connected with an inner cylinder (32) on its circumferential inner wall, and the inner cylinder (32) is provided with an air hole (31) for use with the pipeline (30); the top side wall of the inner cylinder (32) is welded with a sector plate 2 (33), and the side wall of the sector plate 2 (33) is welded with a rotating column (24), and the bottom of the lining rod (28) is provided with a sliding groove that matches the outer diameter of the rotating column (24); the rotating column (24) is provided with an arc groove (26), the bottom outer wall of the lining rod (28) is welded with a driving plate (23), and the side wall of the driving plate (23) is welded with a driving block (27) for use with the arc groove (26).

7. The swing arm welding device according to claim 6, characterized in that: The negative pressure dust suppression component comprises a negative pressure cylinder (19) and a vertical plate (39), wherein the vertical plate (39) is fixed to the outer wall of the bottom of the placing machine (6), and the negative pressure cylinder (19) is fixed to the outer wall of one side of the vertical plate (39), and the circumferential inner wall of the negative pressure cylinder (19) is movably connected to a negative pressure driving plate (41), and a spring 2 (38) is clamped between the outer wall of one side of the negative pressure driving plate (41) and the inner wall of one side of the negative pressure cylinder (19), a gas cylinder (35) is fixed to the inner wall of one side of the mounting plate (13) by screws, and the circumferential inner wall of the gas cylinder (35) is movably connected to a piston plate 1 (34), and the piston plate 1 (34) and the negative pressure driving plate (41) are connected and fixed by a piston rod (36), and the top and bottom of the gas cylinder (35) are respectively connected to a one-way valve 1 (37) and a one-way valve 2 (42) by threads, and the top of the one-way valve 1 (37) is connected to a dust suppression liquid storage component.

8. The swing arm welding device according to claim 7, characterized in that: The dust suppression liquid storage component comprises a water tank (43) and a three-way pipe (45); the water tank (43) is fixed to an outer wall of one side of the connecting plate (18); the three-way pipe (45) is fixed to a side wall of a placement machine (6) by embedding; the water tank (43) and the three-way pipe (45) are connected by a water pipe (46); an atomizing nozzle (44) is fixed to the end of the three-way pipe (45).

9. The swing arm welding device according to claim 8, characterized in that: The welding part comprises a welding mechanical arm (5) fixed to the top outer wall of the fixing seat (7), and a welding gun is installed at the end of the welding mechanical arm (5).

10. The swing arm welding device according to claim 9, characterized in that: A control cabinet (2) is fixed to the top outer wall of the support (1).

Images