Swing arm welding device

Abstract

The utility model 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 through the arrangement of the two sets of containing machine tables, and therefore after the swing arm body fixed to one containing machine table is welded, the welding mechanical arm can be rapidly switched to the position of the other containing machine table to weld the swing arm body fixed to the other containing machine table; 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 utility model relates to swing arm welding technical field especially relates to a swing arm welding device. BACKGROUND

[0002] In prior art, the automobile swing arm is the key component of the suspension system, which connects the wheel and the vehicle body, plays the role of support and guide, and is mainly made of aluminum alloy or high-strength steel. The automobile swing arm welding is a key manufacturing process, which directly affects the performance and safety of the automobile suspension system. The automobile swing arm is mainly welded by artificial welding or machine welding. Artificial welding is gradually eliminated due to low efficiency and harm to workers' health. Therefore, machine welding has become the main welding method.

[0003] Through retrieval, the patent with patent application number 202410996618.1 discloses an automobile chassis swing arm assembly welding device, which comprises a fixing frame, the bottom outer wall of the fixing frame is fixedly connected with a supporting leg, and the right side outer wall of the fixing frame is fixedly connected with a first motor.

[0004] The automobile chassis swing arm assembly welding device in the above patent has the following disadvantages: the welding equipment cannot work during the process of taking down the workpiece after welding, and the welding equipment can continue welding work only after the new workpiece to be welded is fixed. Therefore, seamless connection of welding of the upper and lower workpieces cannot be achieved, which affects the welding efficiency. UTILITY MODEL CONTENT

[0005] The utility model aims at solving the shortcomings in the prior art and provides a swing arm welding device.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A swing arm welding device comprises a support and a welding part, the top outer wall of the support is fixedly provided with a fixing seat, the outer walls of both sides of the fixing seat are fixedly provided with fixing plates, the outer wall of each fixing plate is fixedly provided with a placing machine table, and the swing arm body is fixedly clamped and placed on the placing machine table by a clamp, the clamp comprises a clamping plate two and a cylinder two, the cylinder two is fixed to the top outer wall of the placing machine table, and the clamping plate two is fixed to the output end of the cylinder two, the clamp further comprises a clamping plate one and a cylinder one, the cylinder one is fixed to the top outer wall of the placing machine table, and the clamping plate one is fixed to the output end of the cylinder one.

[0008] Preferably, the bottom of the placing machine table is fixedly provided with connecting plates, the connecting plates are welded with a gasket, the through hole formed in the surface of the gasket is movably connected with a lining rod, the outer wall of the lining rod is welded with a gasket, the gasket and the gasket are clamped with a spring, and the top of the lining rod is welded with a buffer seat.

[0009] Further, the bottom outer wall of the backing plate is welded with a switching cylinder through an intermediate column, and a sector plate is welded on the top of the switching cylinder, and a negative pressure dust collection part is connected to the bottom of the switching cylinder.

[0010] Further, the negative pressure dust collection part comprises a mounting plate and a negative pressure fan, the mounting plate is fixed to the bottom outer wall of the placing machine, and the negative pressure fan is fixed to the outer wall of one side of the mounting plate.

[0011] As a preferred scheme of the utility model, the output end of the negative pressure fan is fixed with an air pipe through an embedding mode, one end of the air pipe away from the negative pressure fan is threadedly connected with a filler box, the filler box and the bottom of the switching cylinder are connected through an elbow pipe, and the filler box is filled with filler.

[0012] As a further scheme of the utility model, a pipeline is welded on the circumferential outer wall of the switching cylinder, a negative pressure dust falling assembly is connected to one end of the pipeline, an inner cylinder is movably connected to the circumferential inner wall of the switching cylinder, air holes used in cooperation with the pipeline are formed in the side wall of the inner cylinder, a sector plate two is welded on the top side wall of the inner cylinder, a rotating column is welded on the side wall of the sector plate two, a sliding groove adapted to the outer diameter of the rotating column is formed in the bottom of the lining rod, an arc-shaped groove is formed in the circumferential outer wall of the rotating column, a driving plate is welded on the bottom outer wall of the lining rod, and a driving block used in cooperation with the arc-shaped groove is welded on the side wall of the driving plate.

[0013] As a further scheme of the utility model, the negative pressure dust falling assembly comprises a negative pressure cylinder and a vertical plate, the vertical plate is fixed to the bottom outer wall of the placing machine, the negative pressure cylinder is fixed to the outer wall of one side of the vertical plate, a negative pressure driving plate is movably connected to the circumferential inner wall of the negative pressure cylinder, springs two are 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 through screws, a piston plate one is movably connected to the circumferential inner wall of the gas cylinder, the piston plate one and the negative pressure driving plate are fixedly connected through a piston rod, a one-way valve one and a one-way valve two are threadedly connected to the top and the bottom of the gas cylinder respectively, and the top of the one-way valve one is connected with a dust falling liquid storage assembly.

[0014] On the basis of the foregoing scheme, the dust falling liquid storage assembly comprises a water tank and a three-way pipe, the water tank is fixed to the outer wall of one side of the connecting plate, the three-way pipe is fixed to the side wall of the placing machine through an embedding mode, and the water tank and the three-way pipe are connected through a water pipe, and the end of the three-way pipe is fixed with an atomizing nozzle.

[0015] On the basis of the foregoing scheme, the welding part comprises a welding mechanical arm fixed to the top outer wall of the fixed seat, and a welding gun is installed at the end of the welding mechanical arm.

[0016] On the basis of the foregoing scheme, the top outer wall of the support is fixed with a control cabinet.

[0017] The utility model discloses the beneficial effect is:

[0018] 1. A swing arm welding device, by setting two groups of placing machine table can be fixed at a time two groups of swing arm body need to be welded, so that after the swing arm body fixed on one of the placing machine table is welded, the welding mechanical arm can quickly switch to the other placing machine table to weld the swing arm body fixed thereon, so that when welding multiple swing arm bodies, the welding process is seamlessly connected, and the welding efficiency is improved.

[0019] 2. A swing arm welding device, by using spring and buffer seat, the swing arm body can be buffered and protected, and can be used as a "switching switch" between dust collection and dust reduction, so that dust collection and dust reduction during welding are realized, and the processing effect of welding dust is improved.

[0020] 3. A swing arm welding device, the swing arm body indirectly drives the coincidence between the fan-shaped plate two and the fan-shaped plate by using its own weight during welding, and the welding dust generated during welding is collected by filler through negative pressure after the negative pressure fan is started.

[0021] 4. A swing arm welding device, when the swing arm body is removed after welding, the fan-shaped plate two is reset under the rebound force of the spring, and the piston plate one is indirectly driven to move along the gas cylinder by using negative pressure after the negative pressure fan is started, so that the dust reduction liquid in the water tank is atomized and sprayed from the atomizing nozzle under the air pushing action, and the welding dust is dusted.

[0022] 5. A swing arm welding device, by setting the filler box, the filler can be stored, and by threadedly connecting the air pipe and the filler box, the filler can be easily taken out and replaced when the service life of the filler is reached. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the overall structure schematic diagram of the swing arm welding device provided by the utility model;

[0024] Figure 2 is the smoke dust treatment part installation structure schematic diagram of the swing arm welding device provided by the utility model;

[0025] Figure 3 is the bottom structure schematic diagram of the smoke dust treatment part of the swing arm welding device provided by the utility model;

[0026] Figure 4 is the main body structure schematic diagram of the smoke dust treatment part of the swing arm welding device provided by the utility model;

[0027] Figure 5 is the main body explosion structure schematic diagram of the smoke dust treatment part of the swing arm welding device provided by the utility model;

[0028] Figure 6 is a kind of swing arm welding device's adsorption filler installation structure schematic diagram of mounting structure proposed in the utility model;

[0029] Figure 7 is a kind of swing arm welding device's dust fall liquid storage assembly installation structure schematic diagram of mounting structure proposed in the utility model;

[0030] In the drawing: support 1;Control cabinet 2;Clamping plate one 3;Fixed plate 4;Welding mechanical arm 5;Place machine table 6;Fixed seat 7;Cylinder one 8;Swing arm main body 9;Clamping plate two 10;Cylinder two 11;Buffer seat 12;Mounting plate 13;Negative pressure fan 14;Filler box 15;Switching cylinder 16;Pad 17;Connecting plate 18;Negative pressure cylinder 19;Air pipe 20;Gasket 21;Spring 22;Drive plate 23;Rotary column 24;Intermediate column 25;Arc slot 26;Drive block 27;Lining rod 28;Sector plate 29;Pipeline 30;Air hole 31;Inner cylinder 32;Sector plate two 33;Piston plate one 34;Gas cylinder 35;Piston rod 36;Check valve one 37;Spring two 38;Stand plate 39;Filler 40;Negative pressure drive plate 41;Check valve two 42;Water tank 43;Atomizing nozzle 44;Three-way pipe 45;Water pipe 46;Elbow pipe 47. DETAILED DESCRIPTION

[0031] The technical solutions of the present patent will be further described in detail below in conjunction with specific embodiments.

[0032] The embodiments of the present patent will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present patent, and cannot be understood as a limitation of the present patent.

[0033] Example 1:

[0034] A swing arm welding device, as shown in Figure 1 illustrated, includes support 1 and welding part, the top outer wall of the support 1 is fixed with fixed seat 7 by bolt, and the outer wall of both sides of fixed seat 7 is fixed with fixed plate 4 by bolt, and the outer wall of fixed plate 4 is fixed with place machine table 6, and the swing arm main body 9 is arranged on place machine table 6 and is fixed by using clamp, the clamp includes clamping plate two 10 and cylinder two 11, the cylinder two 11 is fixed on the top outer wall of place machine table 6 by bolt, and the clamping plate two 10 is fixed on the output end of cylinder two 11 by bolt, the clamp further includes clamping plate one 3 and cylinder one 8, the cylinder one 8 is fixed on the top outer wall of place machine table 6 by bolt, and the clamping plate one 3 is fixed on the output end of cylinder one 8 by bolt, and the clamping plate one 3 and the clamping plate two 10 are used in cooperation to fix swing arm main body 9;

[0035] The swing arm body 9 to be welded is placed by the placement machine table 6, the swing arm body 9 is clamped and fixed by driving the clamping plate two 10 to move by the cylinder two 11, and driving the clamping plate one 3 to move by the cylinder one 8, the stability of the swing arm body 9 during welding is ensured, and the swing arm body 9 is clamped and fixed. When the swing arm body 9 on one of the two placement machine tables 6 is welded by the welding part, the welding part can be quickly switched to the other placement machine table 6 to weld the swing arm body 9 fixed thereon, so that the welding efficiency is not affected by the long time spent on clamping and fixing the swing arm body 9.

[0036] The welding part comprises a welding mechanical arm 5 fixed to the top outer wall of the fixed seat 7 by bolts, and a welding gun mounted at the end of the welding mechanical arm 5.

[0037] The welding mechanical arm 5 drives 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, so that the accuracy during welding is ensured and the welding effect is improved.

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

[0039] The control cabinet 2 can control the entire device, start and stop the control device, and ensure the smooth welding.

[0040] Embodiment 2:

[0041] A swing arm welding device, as shown in Figures 2 to 7 In order to facilitate the treatment of smoke during welding, the following supplements are made on the basis of embodiment 1: the bottom of the placement machine table 6 is fixed by bolts with a connecting plate 18, and a plurality of connecting plates 18 are welded with a backing plate 17, a through hole is formed in the surface of the backing plate 17 and is connected with a lining rod 28, the outer wall of the lining rod 28 is welded with a gasket 21, the gasket 21 and the backing plate 17 are connected with a spring 22, and the top of the lining rod 28 is welded with a buffer seat 12.

[0042] In the initial stage, the height of the buffer seat 12 is higher than the top of the placement machine table 6, so that when the swing arm body 9 falls due to accident during feeding, the swing arm body 9 is received by the buffer seat 12, and the swing arm body 9 is protected by the spring 22, so that the swing arm body 9 is not damaged by stress.

[0043] The bottom outer wall of the backing plate 17 is welded with a switching cylinder 16 through the intermediate column 25, and the top of the switching cylinder 16 is welded with a sector plate 29, and the bottom of the switching cylinder 16 is connected with a negative pressure dust collection part.

[0044] The negative pressure dust suction part can be used for adsorbing welding smoke, reducing the harm of the smoke to the environment and human bodies.

[0045] The negative pressure dust suction part comprises a mounting plate 13 and a negative pressure fan 14, the mounting plate 13 is fixed on the bottom outer wall of the placing table 6 by bolts, and the negative pressure fan 14 is fixed on one side outer wall of the mounting plate 13 by bolts, the output end of the negative pressure fan 14 is fixed with an air pipe 20 by embedding, one end of the air pipe 20 away from the negative pressure fan 14 is threadedly connected with a filler box 15, and the filler box 15 and the bottom of the switching cylinder 16 are connected by an elbow pipe 47, and the filler box 15 is filled with filler 40;

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

[0047] The switching cylinder 16 is welded with a pipeline 30 on the circumferential outer wall, one end of the pipeline 30 is connected with a negative pressure dust falling assembly, the circumferential inner wall of the switching cylinder 16 is rotatably connected with an inner cylinder 32, the side wall of the inner cylinder 32 is provided with air holes 31 used in cooperation with the pipeline 30, the top side wall of the inner cylinder 32 is welded with a second sector plate 33, the side wall of the second sector plate 33 is welded with a rotating column 24, the bottom of the lining rod 28 is provided with a sliding groove matched with the outer diameter of the rotating column 24, the circumferential outer wall of the rotating column 24 is provided with an arc-shaped 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 used in cooperation with the arc-shaped groove 26.

[0048] When the swing arm body 9 is not placed on the placing machine table 6, the fan-shaped plate 29 and the fan-shaped plate two 33 are in a state of mutual misalignment, and the air hole 31 and the pipeline 30 are in a state of facing each other, that is, the top of the switching cylinder 16 is closed by the fan-shaped plate 29 and the fan-shaped plate two 33, and when the swing arm body 9 is placed on the placing machine table 6, the swing arm body 9 is pressed against the buffer seat 12 by its own weight, the buffer seat 12 is pressed to indirectly drive the driving block 27 to move downward in the vertical direction, and the vertical movement of the driving block 27 is converted into the circumferential movement of the rotating column 24 in the process of moving downward by the arc-shaped slot 26, the rotating column 24 drives the inner cylinder 32 and the fan-shaped plate two 33 to rotate in the process of rotating, and the fan-shaped plate two 33 gradually coincides with the bottom outer wall of the fan-shaped plate 29 after rotating, at this time, the top of the switching cylinder 16 is opened, and the air hole 31 is misaligned with respect to the pipeline 30, when the negative pressure fan 14 is started, the welding dust is sucked into the filler 40 by negative pressure, when the swing arm body 9 is removed after welding, the fan-shaped plate two 33 is reset to move to a state of misalignment with the fan-shaped plate 29 again by the rebound force of the spring 22, and at this time, the air hole 31 and the pipeline 30 are coincided again, when the negative pressure fan 14 is started again, the welding dust that is not completely adsorbed in the air is treated again by the negative pressure dust falling assembly connected by the pipeline 30, to ensure the treatment effect of the welding dust.

[0049] The negative pressure dust falling assembly comprises a negative pressure cylinder 19 and a vertical plate 39, the vertical plate 39 is fixed on the bottom outer wall of the placing machine table 6 by bolts, and the negative pressure cylinder 19 is fixed on one side of the outer wall of the vertical plate 39 by bolts, and the circumferential inner wall of the negative pressure cylinder 19 is slidably connected with a negative pressure driving plate 41, and the spring two 38 is clamped between one side of the outer wall of the negative pressure driving plate 41 and one side of the inner wall of the negative pressure cylinder 19, and the one side of the inner wall of the mounting plate 13 is fixed with a gas cylinder 35 by screws, and the circumferential inner wall of the gas cylinder 35 is slidably connected with a piston plate one 34, and the piston plate one 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 with a one-way valve one 37 and a one-way valve two 42 by threads, and the top of the one-way valve one 37 is connected with a dust falling liquid storage assembly;

[0050] When a small amount of welding dust that is not completely adsorbed needs to be treated, the pipeline 30, the air hole 31 and the negative pressure fan 14 are communicated, the negative pressure driving plate 41 is attracted to slide along the inner surface of the negative pressure cylinder 19 by negative pressure, the spring two 38 is compressed, and the piston plate one 34 is driven to move along the inner wall of the gas cylinder 35 by the piston rod 36 in the process of moving the negative pressure driving plate 41, and the air in the gas cylinder 35 is extruded to be discharged through the one-way valve one 37 in the process of moving the piston plate one 34, and the dust falling liquid in the dust falling liquid storage assembly can be discharged to treat the welding dust by the pushing effect of the air.

[0051] The dust-settling liquid storage assembly comprises a water tank 43 and a tee pipe 45, the water tank 43 is fixed on one side of the outer wall of the connecting plate 18 by bolts, the tee pipe 45 is fixed on the side wall of the placing machine table 6 by embedding, and the water tank 43 and the tee pipe 45 are connected by a water pipe 46, and the end of the tee pipe 45 is fixed with an atomizing nozzle 44;

[0052] The dust-settling liquid in the water tank 43 enters the tee pipe 45 by the connection of the water pipe 46, the dust-settling liquid is prevented from entering the inside of the gas cylinder 35 by the one-way valve 42, after the air is led out through the gas cylinder 35 and the one-way valve 37, the dust-settling liquid is atomized and sprayed out through the atomizing nozzle 44 under the pushing action of the air, and the welding smoke is settled by the generated water mist.

[0053] Working principle: when the swing arm body 9 is welded, the swing arm body 9 is placed on the placing machine table 6 for fixation, the swing arm body 9 is pressed against the buffer seat 12 by its own gravity, the buffer seat 12 drives the driving plate 23 and the driving block 27 to move downward after being pressed, the vertical movement of the driving block 27 is converted into the circumferential movement of the rotating column 24 by the arc-shaped slot 26, the rotating column 24 rotates the sector plate two 33 to the position of mutual overlap along the sector plate 29 in the rotating process, then the welding smoke generated in the welding process is absorbed by the negative pressure of the activated negative pressure fan 14, and the absorbed welding smoke is finally adsorbed by the filler 40.

[0054] After the swing arm body 9 is taken off from the placing machine table 6 after welding, the rotating column 24 and the sector plate two 33 are reset by the rebound force of the spring 22, the sector plate two 33 is mutually misaligned between the sector plate 29 after being reset, and the air hole 31 and the pipeline 30 are communicated, when the negative pressure fan 14 is activated again, the negative pressure drive plate 41 is attracted by the negative pressure, the negative pressure drive plate 41 slides along the inside of the negative pressure cylinder 19 after being attracted, the air in the gas cylinder 35 is extruded by the piston plate one 34 in the synchronous movement process, the extruded air is led out through the one-way valve one 37, the dust-settling liquid in the water tank 43 is pushed, and finally the dust-settling liquid is atomized and sprayed out through the atomizing nozzle 44 to settle the welding smoke.

[0055] The above is the preferred specific implementation manner of the utility model, the protection scope of the utility model is not limited to this, any modification, equivalent replacement and improvement in the technical range disclosed by the utility model and combined with the prior art or public common knowledge within the spirit and principles of the utility model should be covered in the protection scope of the utility model.

Claims

1. A swing arm welding device, comprising a support (1) and a welding part, characterized in that, The support (1) has a fixed seat (7) fixed on the top outer wall, and fixed plates (4) are fixed on both sides of the fixed seat (7). The fixed plate (4) has a placement platform (6) fixed on its outer wall. The placement platform (6) is equipped with a swing arm body (9) that is clamped and fixed by a clamp. The clamp includes a clamping plate (10) and a cylinder (11). The cylinder (11) is fixed on the top outer wall of the placement platform (6), and the clamping plate (10) is fixed on the output end of the cylinder (11). The clamp also includes a clamping plate (3) and a cylinder (8). The cylinder (8) is fixed on the top outer wall of the placement platform (6), and the clamping plate (3) is fixed on the output end of the cylinder (8).

2. The swing arm welding device according to claim 1, characterized in that, The bottom of the placement platform (6) is fixed with a connecting plate (18), and a pad (17) is welded between multiple connecting plates (18). A through hole is opened on the surface of the pad (17) to which a bushing (28) is movably connected. A gasket (21) is welded to the outer wall of the bushing (28), and a spring (22) is snapped between the gasket (21) and the pad (17). A buffer seat (12) is welded to the top of the bushing (28).

3. The swing arm welding device according to claim 2, characterized in that, The bottom outer wall of the pad (17) is welded with a switching cylinder (16) through a middle 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 collection unit.

4. The swing arm welding device according to claim 3, characterized in that, The negative pressure dust collection unit includes a mounting plate (13) and a negative pressure fan (14). The mounting plate (13) is fixed to the bottom outer wall of the placement platform (6), and the negative pressure fan (14) is fixed to one side of the outer wall 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) by embedding. The end of the air pipe (20) away from the negative pressure fan (14) is threadedly connected to a stuffing box (15). 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 stuffing (40).

6. The swing arm welding device according to claim 5, characterized in that, The switching cylinder (16) has a pipe (30) welded to its outer circumference, and one end of the pipe (30) is connected to a negative pressure dust suppression component. The inner cylinder (32) is movably connected to the inner circumference of the switching cylinder (16), and the inner cylinder (32) has an air hole (31) on its side wall that works with the pipe (30). The top side wall of the inner cylinder (32) has a fan-shaped plate (33) welded to its top side wall, and a rotating column (24) welded to the side wall of the fan-shaped plate (33). The bottom of the liner (28) has a groove that matches the outer diameter of the rotating column (24). The outer circumference of the rotating column (24) has an arc groove (26). The bottom outer wall of the liner (28) has a drive plate (23) welded to its bottom, and the side wall of the drive plate (23) has a drive block (27) that works with the arc groove (26).

7. The swing arm welding device according to claim 6, characterized in that, The negative pressure dust suppression assembly includes a negative pressure cylinder (19) and a vertical plate (39). The vertical plate (39) is fixed to the bottom outer wall of the placement platform (6), and the negative pressure cylinder (19) is fixed to one side of the outer wall of the vertical plate (39). A negative pressure drive plate (41) is movably connected to the inner circumference of the negative pressure cylinder (19). A spring (38) is snapped between one side of the outer wall of the negative pressure drive plate (41) and one side of the inner wall of the negative pressure cylinder (19). A gas cylinder (35) is fixed to one side of the inner wall of the mounting plate (13) by screws. A piston plate (34) is movably connected to the inner circumference of the gas cylinder (35). The piston plate (34) and the negative pressure drive plate (41) are connected and fixed by a piston rod (36). A one-way valve (37) and a one-way valve (42) are respectively threaded to the top and bottom of the gas cylinder (35). A dust suppression liquid storage assembly is connected to the top of the one-way valve (37).

8. The swing arm welding device according to claim 7, characterized in that, The dust-suppressing liquid storage assembly includes a water tank (43) and a three-way pipe (45). The water tank (43) is fixed to the outer wall of one side of the connecting plate (18), and the three-way pipe (45) is fixed to the side wall of the placement platform (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. A swing arm welding device according to claim 8, characterized in that, The welding section includes a welding robot arm (5) fixed to the top outer wall of the fixed base (7), and a welding gun is installed at the end of the welding robot arm (5).

10. A swing arm welding device according to claim 9, characterized in that, The support (1) has a control cabinet (2) fixed to its top outer wall.

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