An intelligent plasma arc welding machine for producing automobile shock absorbers and its usage method

Abstract

An intelligent plasma arc welding machine for producing automobile shock absorbers and its usage method. It relates to the technical field of welding equipment. It includes a machine table and a welding torch arranged on the machine table. A first clamping mechanism is arranged on one side of the top of the machine table, and a second clamping mechanism is arranged on the other side of the top of the machine table. A support mechanism is arranged between the first clamping mechanism and the second clamping mechanism; the first clamping mechanism includes a rotating seat, a chuck and a motor, and the motor is used to drive the chuck to rotate; the second clamping mechanism includes a sleeve, a movable rod and a number of movable blocks. The sleeve is fixedly arranged, and a number of the movable blocks are arranged around the outer side of the front end of the movable rod, and a number of the movable blocks can move back and forth along the axial direction of the movable rod. Through the supporting actions of the first clamping mechanism, the second clamping mechanism and the support mechanism, the clamping effect on the first component and the second component is improved, and the welding precision is significantly improved in this application.

Description

Technical Field

[0001] This application relates to the technical field of welding equipment, and particularly relates to an intelligent plasma arc welding machine for producing automotive shock absorbers and its usage method. Background Art

[0002] Automotive shock absorbers are used to suppress the oscillations when the spring rebounds after absorbing shock and the impacts from the road surface. To accelerate the attenuation of the vibration of the vehicle frame and the body, and to improve the ride comfort of the vehicle. When passing through uneven road surfaces, the shock absorber can be used to suppress the reciprocating movement and jumping of the spring itself.

[0003] In the Chinese patent document with the publication number CN219818488U, a tube shell welding tooling for automotive shock absorbers is disclosed, and specifically discloses a bottom plate. The rear end of the upper surface of the bottom plate is fixedly connected with a mounting plate, and the outer wall of the rear end of the mounting plate is fixedly connected with a first servo motor. In this utility model, through the first servo motor provided, when in use, first place one end of the tube shell in the placement groove, and then control the electric telescopic rod to drive the clamping plate to extend, so that the clamping plate clamps the tube shell. Then drive the rotating disk to rotate through the first servo motor, so that the tube shell rotates, avoiding the problem that in the past, workers needed to hold the welding torch to rotate or manually rotate the tube shell, and through the electric telescopic rod driving the clamping plate to move, so that the rotating disk can adapt to different tube shells.

[0004] However, in the above patent, the rotating disk can only clamp one component. When the welding precision requirements for two components to be welded are relatively high, the coaxiality between the other unclamped component and the clamped component is relatively poor, and it is difficult to meet the process requirements. Summary of the Invention

[0005] In order to overcome the deficiencies of the prior art, this application provides an intelligent plasma arc welding machine for producing automotive shock absorbers and its usage method.

[0006] In the first aspect, this application provides an intelligent plasma arc welding machine for producing automotive shock absorbers, adopting the following technical solution:

[0007] An intelligent plasma arc welding machine for producing automotive shock absorbers includes a machine table and a welding torch arranged on the machine table. A first clamping mechanism is arranged on one side of the top of the machine table, a second clamping mechanism is arranged on the other side of the top of the machine table, and a support mechanism is arranged between the first clamping mechanism and the second clamping mechanism;

[0008] The first clamping mechanism includes a rotating base, a chuck, and a motor. The chuck is disposed on one side of the rotating base, and the motor is disposed on the other side of the rotating base. The motor is used to drive the chuck to rotate. The second clamping mechanism includes a sleeve, a movable rod, and a plurality of movable blocks. The sleeve is fixedly arranged. The end of the movable rod is inserted into the sleeve and can rotate around the axis of the sleeve. The movable blocks are wedge-shaped, and a plurality of the movable blocks are annularly arranged on the outer side of the front end of the movable rod. The plurality of movable blocks can reciprocate along the axial direction of the movable rod.

[0009] By adopting the above technical solution, the chuck realizes the clamping function of the longer first component, and the plurality of movable blocks realize the clamping function of the shorter second component. In this way, both the first component and the second component are reliably clamped. After the motor drives the rotating base to rotate, the first component and the second component can rotate synchronously. At this time, the welding machine remains stationary and rotates relative to the first component and the second component, so as to reliably realize the welding function of the first component and the second component. At the same time, it also ensures that a high concentricity is maintained between the first component and the second component, thereby improving the welding precision.

[0010] Optionally, the chuck is used to clamp the first component with a larger length, and the chuck is clamped on the outer wall of the first component. The plurality of movable blocks are used to clamp the second component with a shorter length. The plurality of movable blocks form an expanding support portion. The outer diameter of the expanding support portion gradually increases in the direction away from the chuck. The outer wall of the expanding support portion is clamped on the inner wall of the second component. The support mechanism is close to the second component.

[0011] By adopting the above technical solution, the outer diameter of the expanding support portion can adapt to second components of different sizes, that is, through the movement of the expanding support portion in the second component, when interference occurs between the expanding support portion and the second component, the position of the second component is fixed. The support mechanism is close to the second component, which can improve the clamping and supporting effects of the chuck and the support mechanism on the first component.

[0012] Optionally, the support mechanism includes a base and a pair of bearing seats. The pair of bearing seats are disposed on the top of the base, and the first component is mounted between the pair of bearing seats.

[0013] By adopting the above technical solution, when the motor drives the rotating base to rotate, the first component can reliably rotate between the pair of bearing seats, so as to ensure that the welding machine can complete the welding function of the first component and the second component while remaining stationary.

[0014] Optionally, a cavity is provided inside the movable rod, and a plurality of sliding holes communicating with the cavity are provided on the outer wall of the front end of the movable rod. A tray and a plurality of connecting rods are provided in the cavity. The plurality of connecting rods correspond to the plurality of movable blocks one by one. The connecting rods are L-shaped. One end of the connecting rod is connected to the tray, and the other end of the connecting rod passes through the sliding hole and is connected to the movable block. A piston is provided at the bottom of the tray. The outer wall of the piston fits against the inner wall of the cavity. A water hole communicating with the cavity is provided at the bottom of the rear end of the movable rod. A water inlet pipe is provided on the outer wall of the sleeve. The water inlet pipe is used to convey water into the sleeve. The water enters the cavity through the water hole and pushes the piston.

[0015] By adopting the above technical solution, when water is input into the cavity through the water inlet pipe, it will form a pushing effect on the piston. The movable block and the piston are connected through the connecting rod and the tray. In this way, the piston will drive the movable block to move, so that the movable block can form a spreading and supporting effect on the second component, and further realize the clamping of the second component.

[0016] Optionally, the radial cross-section of the tray is U-shaped. The vertical part of the tray is in contact with the vertical end of the connecting rod and is connected by a first bolt. There is a gap between the vertical part of the tray and the inner wall of the cavity, and there is also a gap between the movable block and the outer wall of the movable rod.

[0017] By adopting the above technical solution, under the connection action of the first bolt, the connecting rod and the tray can be reliably connected. And under the lifting and limiting action of the tray, the movable block can be reliably driven, so as to realize the self-adaptive clamping of the second component.

[0018] Optionally, a retaining ring is provided on the front end face of the sleeve. The outer diameter of the retaining ring is larger than the outer diameter of the sleeve. When the retaining ring contacts the movable block, there is a distance between the bottom of the rear end of the movable rod and the rear end face of the sleeve.

[0019] By adopting the above technical solution, the retaining ring plays a limiting role to ensure that there is a space for water to pass through between the movable rod and the sleeve, and further ensure that water can enter the cavity through the water hole and realize the pushing effect on the piston.

[0020] Optionally, a water guide pipe is provided in the cavity. The piston divides the cavity into a left chamber and a right chamber that do not communicate with each other. One end of the water guide pipe passes through the front end face of the movable rod and communicates with the outside. The other end of the water guide pipe passes through the left chamber and the piston and communicates with the right chamber. A pressure difference valve is provided on the water guide pipe. The pressure difference valve is located in the left chamber. When the plurality of movable blocks clamp the second component, the pressure difference valve can be in an open state.

[0021] By adopting the above technical solution, the water pressure required for the water body to push the piston to generate displacement is less than the water pressure for opening the differential pressure valve. In this way, during the process of the water body pushing the piston to generate displacement, the differential pressure valve can remain closed. When interference occurs between the movable block and the second component and the piston cannot move further, the water pressure in the right chamber will gradually increase and open the differential pressure valve, and the water body can be sprayed from the water guide pipe to the inner side of the second component, achieving rapid cooling of the weld seam and improving the overall processing efficiency.

[0022] Optionally, a first mesh plate is arranged in the right chamber. The end of the water guide pipe passes through the piston and is connected to the first mesh plate. A second mesh plate is arranged inside the front end of the water guide pipe. A lead screw is screwed on the second mesh plate through a thread. A threaded sleeve is arranged at one end of the lead screw away from the second mesh plate. A water guide plate is arranged on the outer wall of the threaded sleeve. The water guide plate is arc-shaped and is used to change the flow direction of the water body sprayed from the water guide pipe. A water guide groove is arranged at the top of the machine table. The bottom of the water guide groove is in a slope shape. A water return pipe is arranged at the low end of the water guide groove. A water storage tank is arranged outside the machine table. Both the water inlet pipe and the water return pipe are communicated with the water storage tank.

[0023] By adopting the above technical solution, the water body will impact the water guide plate after spraying out of the water guide pipe, thereby realizing the dispersion of the water body from axial spraying along the water guide pipe to radial spraying along the water guide pipe, and further ensuring that the water body can fully contact the inner wall of the second component and improving the cooling effect. After the water body sprays out of the water guide pipe and cools the second component, it will flow out from the inside of the second component to the outside of the second component and fall into the water guide groove, and then be recycled into the water tank through the water return pipe for reuse.

[0024] Optionally, a first flange is arranged at both the input end and the output end of the differential pressure valve. The water guide pipe is truncated at the differential pressure valve. A second flange and a third flange are arranged at the truncated part. The second flange is docked with one of the first flanges, and the third flange is docked with the other first flange. The third flange is close to the tray. The first flange and the second flange are separated from the inner wall of the cavity. The radial cross-section of the third flange is U-shaped. The vertical end of the third flange is locked with the inner wall of the cavity through a second bolt. The end of the bolt extends to the outside of the movable rod. The end of the bolt is hemispherical and contacts the side of the movable block close to the movable plate. When the connecting rod contacts the third flange, the piston is located outside the sliding hole.

[0025] By adopting the above technical solution, the third flange can play a role in limiting the movement of the piston, ensuring that the right chamber is not in communication with the sliding hole, and thus ensuring that the water body can reliably drive the piston to generate displacement. At the same time, the hemispherical end of the second bolt can play a supporting role for the movable block, ensuring that the movable block can slide more smoothly.

[0026] In a second aspect, the present application provides a method for using an intelligent plasma arc welding machine for producing automotive shock absorbers, adopting the following technical solution:

[0027] A method for using an intelligent plasma arc welding machine for producing automotive shock absorbers includes the following steps:

[0028] S1. Clamp the first component on the chuck, and then sleeved the second component outside a plurality of movable blocks, so that the first component and the second component are coaxial but separated from each other.

[0029] S2. The water inlet pipe conveys water into the sleeve, so that the piston moves in the cavity and pushes the tray and the movable blocks to generate displacement along the axial direction of the movable rod until the first component and the second component are completely butted.

[0030] S3. Adjust the position of the welding torch so that the welding torch is located at the butting position of the first component and the second component, and then the motor drives the rotating seat and the chuck to rotate, and the welding torch starts welding.

[0031] S4. After the rotating seat rotates one week, turn off the motor and the welding torch, and the welding operation is completed.

[0032] S5. The chuck releases the clamping of the first component, the water inlet pipe pumps water outwards so that a plurality of movable blocks are reset, and the welded first component and second component are removed from the support mechanism, and it is completed.

[0033] By adopting the above technical solution, the welding precision of the first component and the second component can be improved, and the cooling effect on the weld seam can be realized synchronously during the welding process, thereby improving the processing efficiency.

[0034] Compared with the prior art, the present application has the following beneficial effects:

[0035] 1. The first clamping mechanism clamps the first component, and the second clamping mechanism clamps the second component, improving the clamping effect on the first component and the second component, and thus being able to improve the butting effect between the first component and the second component, and significantly improving the welding precision.

[0036] 2. Through the driving effect of the water body on the piston, the driving effect on the movable blocks is realized, so that the second component is adaptively clamped after the wedge-shaped movable blocks move, and thus the clamping effect and clamping efficiency on the second component are improved to the greatest extent.

[0037] 3. Through the diversion effect of the water guide plate on the water body, the water body can be more evenly sprayed onto the welds of the first component and the second component, achieving a cooling effect on the welds and facilitating the improvement of the overall processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a schematic three-dimensional view of the present application Figure 1 ;

[0039] Figure 2 is a schematic three-dimensional view of the present application Figure 2 ;

[0040] Figure 3 is a schematic three-dimensional view of the second clamping mechanism;

[0041] Figure 4 is a cross-sectional view of the internal structure of the second clamping mechanism;

[0042] Figure 5 is an exploded state reference diagram of the movable rod;

[0043] Figure 6 is an assembled state reference diagram of the water guide pipe and the pressure difference valve;

[0044] Figure 7 is an exploded state reference diagram of the water guide plate and the water guide pipe;

[0045] In the figure: 1. Machine table; 11. Water guide groove; 12. Return water pipe; 13. Water storage tank;

[0046] 2. Welding torch;

[0047] 3. First clamping mechanism; 31. Rotating seat; 32. Chuck; 33. Motor;

[0048] 4. Second clamping mechanism; 41. Sleeve; 411. Water inlet pipe; 412. Retaining ring; 42. Movable rod; 421. Cavity; 4211. Left chamber; 4212. Right chamber; 422. Slide hole; 423. Tray; 4230. First bolt; 424. Connecting rod; 425. Piston; 426. Water hole; 427. Water guide pipe; 4271. First mesh plate; 4272. Second mesh plate; 4273. Lead screw; 4274. Threaded sleeve; 4275. Water guide plate; 4276. Second flange; 4277. Third flange; 4278. Second bolt; 428. Pressure difference valve; 4280. First flange; 43. Movable block;

[0049] 5. Support mechanism; 51. Base; 52. Bearing seat;

[0050] 6. First component;

[0051] 7. Second component. Detailed implementation manners

[0052] Next, in combination with the appended Figures 1-7 drawings and specific implementation manners, the present application will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined with each other to form new embodiments.

[0053] This embodiment discloses an intelligent plasma arc welding machine for manufacturing automobile shock absorbers.

[0054] Figure 1 is the adaptive three-dimensional Figure 1 , Figure 2 is the adaptive three-dimensional Figure 2 . Refer to Figure 1 and Figure 2 , an intelligent plasma arc welding machine for manufacturing automobile shock absorbers includes a machine table 1 and a welding torch 2 disposed on the machine table 1. A first clamping mechanism 3 is disposed on one side of the top of the machine table 1, and a second clamping mechanism 4 is disposed on the other side of the top of the machine table 1. A support mechanism 5 is disposed between the first clamping mechanism 3 and the second clamping mechanism 4. The workpieces to be welded include a first component 6 and a second component 7 both in a tubular shape. The length of the first component 6 is greater than that of the second component 7. The first clamping mechanism 3 is used to clamp the first component 6, and the second clamping mechanism 4 is used to clamp the second component 7. The support mechanism 5 is disposed close to the second clamping mechanism 4. In this way, the first component 6 can be kept stable under the clamping action of the first clamping mechanism 3 and the supporting action of the support mechanism 5, thereby improving the concentricity after the docking of the first component 6 and the second component 7.

[0055] Refer to Figure 2 , the first clamping mechanism 3 includes a rotating base 31, a chuck 32, and a motor 33. The chuck 32 is disposed on one side of the rotating base 31, and the motor 33 is disposed on the other side of the rotating base 31. The motor 33 is used to drive the chuck 32 to rotate. The support mechanism 5 includes a base 51 and a pair of bearing seats 52. The pair of bearing seats 52 are disposed on the top of the base 51. The first component 6 is mounted between the pair of bearing seats 52. The pair of bearing seats 52 can play a supporting role for the first component 6 without affecting the rotation of the first component 6. That is to say, after the first clamping mechanism 3 and the second clamping mechanism 4 complete the clamping of the first component 6 and the second component 7, the motor 33 drives the rotating base 31 to rotate, thereby realizing the synchronous rotation of the first component 6 and the second component 7. In this way, after only adjusting and fixing the initial position of the welding torch 2, the circumferential welding of the first component 6 and the second component 7 can be completed under the rotation of the first component 6 and the second component 7.

[0056] Figure 3 is the schematic three-dimensional view of the second clamping mechanism, Figure 4 is the internal structure cross-sectional view of the second clamping mechanism. Refer toFigure 3 and Figure 4 in combination with Figure 1 , the second clamping mechanism 4 includes a sleeve 41, a movable rod 42 and a plurality of movable blocks 43. The sleeve 41 is fixedly arranged. The end of the movable rod 42 is inserted into the sleeve 41 and can rotate around the axis of the sleeve 41. The movable blocks 43 are wedge-shaped, and a plurality of movable blocks 43 are arranged in a ring on the outer side of the front end of the movable rod 42. Specifically, the inclined surface of the movable block 43 faces away from the outer wall of the movable rod 42, and the straight surface of the movable block 43 faces the outer wall of the movable rod 42. In this way, a plurality of movable blocks 43 can form a spreading portion, and the outer diameter of the spreading portion gradually decreases in the direction towards the chuck 32. The outer wall of the spreading portion can be clamped on the inner wall of the second component 7. That is to say, the first clamping mechanism 3 can be clamped on the outer wall of the first component 6 through the opening and closing of the chuck 32 in the radial direction of the movable rod 42, and the second clamping mechanism 4 can be clamped on the inner wall of the second component 7 through the movement of the movable blocks 43 in the axial direction of the movable rod 42. These two methods can reliably clamp different components to be welded.

[0057] Figure 5 is an exploded state reference diagram of the movable rod. Refer to Figure 5 in combination with Figure 4, a cavity 421 is provided inside the movable rod 42. The cavity 421 is cylindrical. A piston 425 is provided inside the cavity 421. The outer wall of the piston 425 fits against the inner wall of the cavity 421. In this way, the piston 425 divides the cavity 421 into a non-communicating left chamber 4211 and right chamber 4212. A water inlet pipe 411 is provided on the outer wall of the sleeve 41. A water hole 426 is provided at the end of the end of the movable rod 42 passing through the sleeve 41. When the water inlet pipe 411 conveys water into the sleeve 41, the water will enter the right chamber 4212 through the water hole 426. As the water is continuously input, the water will push the piston 425 to move inside the cavity 421, and the volumes of the left chamber 4211 and the right chamber 4212 will also change accordingly. A tray 423 is provided on the piston 425. The tray 423 is located inside the left chamber 4211. A plurality of sliding holes 422 are provided on the outer wall of the end of the movable rod 42 outside the sleeve 41. The sliding holes 422 extend along the axial direction of the movable rod 42 and communicate with the left chamber 4211 of the cavity 421. The radial cross-section of the tray 423 is U-shaped. A plurality of connecting rods 424 are provided inside the tray 423. The connecting rods 424 are L-shaped. The plurality of connecting rods 424 and a plurality of movable blocks 43 are respectively and one-to-one corresponding. Specifically, the vertical end of the connecting rod 424 is connected to the vertical part of the tray 423 through a first bolt 4230. The horizontal end of the connecting rod 424 passes through the sliding hole 422 and is connected to the straight surface of the movable block 43. Under the connection action of the connecting rod 424, the movable block 43 will not fall off the movable rod 42. A sealing ring or other mechanisms that can play a sealing and limiting role can be provided between the sleeve 41 and the movable rod 42 to ensure that the movable rod 42 and the sleeve 41 can rotate reliably but cannot move axially, which also ensures that the thrust exerted on the movable rod 42 by the water after entering the sleeve 41 cannot cause the movable rod 42 to move.

[0058] When the water body pushes the piston 425 to generate a displacement, the movable block 43 will also generate a displacement. In this way, the plurality of movable blocks 43 will protrude toward the front end of the movable rod 42 and enter the inside of the second component 7 until the outer wall of the movable block 43 engages with the inner wall of the second component 7. At this time, the plurality of movable blocks 43 form an expansion support for the second component 7, and then the clamping of the second component 7 is realized through the extrusion force between the movable block 43 and the second component 7. Since the movable block 43 is wedge-shaped, the plurality of movable blocks 43 can clamp the second component 7 with different inner diameters. Further, only the water inlet pressure of the water inlet pipe 411 needs to be monitored. When the inlet pressure becomes significantly larger, it means that the movable block 43 has been in contact with the second component 7. At this time, only the water body needs to be pressure-maintained, which also makes the clamping operation of the second component 7 more intelligent and convenient.

[0059] Figure 6 is a reference diagram of the assembly state of the water guide pipe and the differential pressure valve. Refer to Figure 6 and combine with Figure 4and Figure 2 Inside the cavity 421, a water conduit 427 and a first mesh plate 4271 are provided. The first mesh plate 4271 is located in the right chamber 4212. One end of the water conduit 427 is connected to the first mesh plate 4271, and the other end of the water conduit 427 passes through the piston 425 and communicates with the front end face of the movable rod 42. That is to say, a part of the water conduit 427 is located in the left chamber 4211 and another part is located in the right chamber 4212, and the cavity 421 communicated by the water conduit 427 is open to the outside. In this way, the water body can be discharged out through the water conduit 427 after entering the right chamber 4212. Further, the water conduit 427 is truncated in the right chamber 4212. A second flange 4276 is provided at the end of one section of the water conduit 427, and a third flange 4277 is provided at the end of the other section of the water conduit 427. The third flange 4277 is close to the tray 423. A differential pressure valve 428 is provided at the truncated part. A first flange 4280 is provided at both the input end and the output end of the differential pressure valve 428. One first flange 4280 is connected to the second flange 4276, and the other first flange 4280 is connected to the third flange 4277. In this way, the differential pressure valve 428 can be reliably installed on the water conduit 427. The first flange 4280 and the second flange 4276 are separated from the inner wall of the cavity 421. The radial cross-section of the third flange 4277 is U-shaped. The vertical end of the third flange 4277 is locked with the inner wall of the cavity 421 through a second bolt 4278. The end of the bolt extends to the outside of the movable rod 42, and the end of the bolt is hemispherical and contacts the side of the movable block 43 close to the movable plate. A water guide groove 11 is provided at the top of the machine table 1. The bottom of the water guide groove 11 is sloped. A water return pipe 12 is provided at the low position end of the water guide groove 11. A water storage tank 13 is provided outside the machine table 1. The water inlet pipe 411 and the water return pipe 12 are both communicated with the water storage tank 13.

[0060] With the continuous input of water, the water pressure in the right chamber 4212 gradually increases. When the water pressure of the water reaches a set value, the water can push the piston 425 to move, while the differential pressure valve 428 is still in a closed state at this time. After the movable block 43 fixes the second component 7 and stops moving, the water pressure in the right chamber 4212 and the water pipe 427 will continue to rise. When the water pressure of the water reaches another set value, the differential pressure valve 428 opens, and the water can spray out from the water pipe 427, that is, spray into the inner side of the second component 7, so as to realize the cooling effect on the weld formed by welding the first component 6 and the second component 7, which is convenient for the staff to quickly and safely take the welded first component 6 and the second component 7 after welding. The third flange 4277 is U-shaped and can cooperate with the first mesh plate 4271 to form a fixing effect on the water pipe 427. At the same time, the third flange 4277 can also play a role in restricting the displacement of the movable block 43. Specifically, when the connecting rod 424 contacts the third flange 4277, the movable block 43 reaches the maximum displacement, and at this time, the piston 425 is still located outside the sliding hole 422, so as to ensure that the water will not spray out from the sliding hole 422.

[0061] Figure 7 It is an explosion state reference diagram of the water guide plate and the water pipe. See Figure 7 and in combination with Figure 2 and Figure 4 , inside the front end of the water pipe 427, there is a second mesh plate 4272. A lead screw 4273 is screwed on the second mesh plate 4272. At one end of the lead screw 4273 away from the second mesh plate 4272, there is a threaded sleeve 4274. On the outer wall of the threaded sleeve 4274, there is a water guide plate 4275. The water guide plate 4275 is arc-shaped. When the water sprays out from the water pipe 427, it will hit the water guide plate 4275. In this way, the water guide plate 4275 changes the movement direction of the water from spraying along the movable rod 42 axially to spraying along the movable rod 42 radially, which can make the water more directly and fully contact the welding, so as to improve the cooling effect. After the water sprays out from the water pipe 427 and cools the weld, it can flow out from the second component 7 and fall into the water guide groove 11, and then fall back into the water storage tank 13 through the water return pipe 12 arranged on the low position side of the water guide groove 11, playing a role in recycling and reusing the water. Further, by rotating the lead screw 4273 and the threaded sleeve 4274, the distance between the water guide plate 4275 and the movable rod 42 can be adjusted, so as to ensure that the landing point of the water can be close to the weld but not directly aligned with the weld, preventing the weld from cooling too fast and affecting the welding effect. The water guide plate 4275 is arc-shaped. According to different installation methods, the side of the water guide plate 4275 facing the movable rod 42 can be concave or convex, and the corresponding guiding effect on the water will change, so as to be able to reliably control the spraying and cooling of the water according to different welding conditions and requirements.

[0062] See Figure 2 and Figure 3 As shown in Figure 2 and Figure 3 , a retaining ring 412 is provided at the front end face of the sleeve 41. The outer diameter of the retaining ring 412 is larger than that of the sleeve 41. When the retaining ring 412 contacts the movable block 43, there is a distance between the bottom of the rear end of the movable rod 42 and the rear end face of the sleeve 41. The retaining ring 412 can control the recovery amount of the movable rod 42, ensuring that there is a space for water to pass between the end of the movable rod 42 and the end of the sleeve 41. This ensures that the water can enter the cavity 421 through the water holes 426 after being discharged from the water inlet pipe 411, thereby realizing the pushing of the movable block 43 and the cooling of the weld seam. Further, the retaining ring 412 can also cut off the backflow of water, that is, the water cannot move towards the sleeve 41 after contacting the retaining ring 412, ensuring that the water can completely fall into the water guide groove 11, improving the water recovery efficiency and preventing the water from flowing around and polluting the environment.

[0063] This embodiment also discloses a usage method of an intelligent plasma arc welding machine for producing automotive shock absorbers.

[0064] A usage method of an intelligent plasma arc welding machine for producing automotive shock absorbers includes the following steps:

[0065] S1. Clamp the first component 6 on the chuck 32, and then sleeved the second component 7 outside several movable blocks 43, so that the first component 6 and the second component 7 are coaxial but separated from each other;

[0066] S2. The water inlet pipe 411 conveys water into the sleeve 41, so that the piston 425 moves in the cavity 421 and pushes the tray 423 and the movable blocks 43 to generate displacements along the axial direction of the movable rod 42 until the first component 6 and the second component 7 are completely butted;

[0067] S3. Adjust the position of the welding torch 2 so that the welding torch 2 is located at the butting position of the first component 6 and the second component 7. Then, the motor 33 drives the rotating seat 31 and the chuck 32 to rotate, and the welding torch 2 starts welding;

[0068] S4. After the rotating seat 31 rotates one week, turn off the motor 33 and the welding torch 2, and the welding operation is completed;

[0069] S5. The chuck 32 releases the clamping of the first component 6, and the water inlet pipe 411 pumps water outwards to reset several movable blocks 43. Then, take off the welded first component 6 and the second component 7 from the support mechanism 5, and it is completed.

[0070] The above embodiments are only the preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-substantive changes and substitutions made by those skilled in the art based on the present application belong to the scope of protection required by the present application.

Claims

1. An intelligent plasma arc welding machine for producing automotive shock absorbers, comprising a machine table (1) and a welding torch (2) provided on the machine table (1), characterized in that, On one side of the top of the machine table (1), a first clamping mechanism (3) is provided. On the other side of the top of the machine table (1), a second clamping mechanism (4) is provided. A support mechanism (5) is provided between the first clamping mechanism (3) and the second clamping mechanism (4). The first clamping mechanism (3) includes a rotating seat (31), a chuck (32), and a motor (33). The chuck (32) is provided on one side of the rotating seat (31). The chuck (32) is used for clamping a first component (6) with a larger length. The motor (33) is provided on the other side of the rotating seat (31). The motor (33) is used for driving the chuck (32) to rotate. The second clamping mechanism (4) includes a sleeve (41), a movable rod (42), and a plurality of movable blocks (43). The sleeve (41) is fixedly arranged. The end of the movable rod (42) is inserted into the sleeve (41) and can rotate around the axis of the sleeve (41). The movable blocks (43) are wedge-shaped. A plurality of the movable blocks (43) are arranged in a ring on the outer side of the front end of the movable rod (42). A plurality of the movable blocks (43) can reciprocate along the axial direction of the movable rod (42). A plurality of the movable blocks (43) are used for clamping a second component (7) with a shorter length. A cavity (421) is provided inside the movable rod (42). A plurality of slide holes (422) communicating with the cavity (421) are provided on the outer wall of the front end of the movable rod (42). A tray (423) and a plurality of connecting rods (424) are provided inside the cavity (421). The plurality of connecting rods (424) correspond to the plurality of movable blocks (43) one by one. The connecting rods (424) are L-shaped. One end of the connecting rod (424) is connected to the tray (423). The other end of the connecting rod (424) passes through the slide hole (422) and is connected to the movable block (43). A piston (425) is provided at the bottom of the tray (423). The outer wall of the piston (425) fits with the inner wall of the cavity (421). A water hole (426) communicating with the cavity (421) is provided at the bottom of the rear end of the movable rod (42). A water inlet pipe (411) is provided on the outer wall of the sleeve (41). The water inlet pipe (411) is used for delivering water into the sleeve (41). The water enters the cavity (421) through the water hole (426) and pushes the piston (425). A water guide pipe (427) is provided inside the cavity (421). The piston (425) divides the cavity (421) into a non-communicating left chamber (4211) and a right chamber (4212). One end of the water guide pipe (427) passes through the front end face of the movable rod (42) and communicates with the outside. The other end of the water guide pipe (427) passes through the left chamber (4211) and the piston (425) and communicates with the right chamber (4212). The water conduit (427) is provided with a differential pressure valve (428), and the differential pressure valve (428) is located in the left chamber (4211). When the plurality of movable blocks (43) clamp the second component (7), the differential pressure valve (428) can be in an open state; A first mesh plate (4271) is provided in the right chamber (4212); the end of the water guide pipe (427) passes through the piston (425) and is connected to the first mesh plate (4271); a second mesh plate (4272) is provided inside the front end of the water guide pipe (427); a screw rod (4273) is screwed on the second mesh plate (4272) by means of a thread; a threaded sleeve (4274) is provided at one end of the screw rod (4273) away from the second mesh plate (4272); a water guide plate (4275) is provided on the outer wall of the threaded sleeve (4274); the water guide plate (4275) is arc-shaped and is used to change the flow direction of water sprayed from the water guide pipe (427); The input end and the output end of the differential pressure valve (428) are both provided with a first flange (4280); the water conduit (427) is cut off at the differential pressure valve (428); a second flange (4276) and a third flange (4277) are provided at the cutoff; the second flange (4276) is butt-jointed with one of the first flanges (4280); the third flange (4277) is butt-jointed with another of the first flanges (4280); and the third flange (4277) is close to the tray (423); The first flange (4280) and the second flange (4276) are separated from the inner wall of the cavity (421); the radial cross section of the third flange (4277) is U-shaped; the vertical end of the third flange (4277) is locked with the inner wall of the cavity (421) by a second bolt (4278); the end of the bolt extends to the outside of the movable rod (42); the end of the bolt is hemispherical and contacts with a side of the movable block (43) close to the movable plate; When the connecting rod (424) contacts the third flange (4277), the piston (425) is located outside the sliding hole (422).

2. The intelligent plasma arc welding machine for producing automobile shock absorbers according to claim 1, characterized in that, The chuck (32) is clamped on the outer wall of the first component (6); A plurality of movable blocks (43) form an expansion portion, the outer diameter of which gradually increases in a direction away from the chuck (32), the outer wall of which is clamped on the inner wall of the second component (7), and the support mechanism (5) is close to the second component (7).

3. An intelligent plasma arc welding machine for manufacturing automobile shock absorbers according to claim 2, characterized in that, The support mechanism (5) comprises a base (51) and a pair of bearing seats (52), wherein the pair of bearing seats (52) are arranged on the top of the base (51), and the first component (6) is mounted between the pair of bearing seats (52).

4. An intelligent plasma arc welding machine for manufacturing automobile shock absorbers according to claim 1, characterized in that, The radial cross-section of the tray (423) is U-shaped. The vertical part of the tray (423) is in contact with the vertical end of the connecting rod (424) and is connected by a first bolt (4230). There is a gap between the vertical part of the tray (423) and the inner wall of the cavity (421), and there is also a gap between the movable block (43) and the outer wall of the movable rod (42).

5. An intelligent plasma arc welding machine for manufacturing automotive shock absorbers according to claim 1, characterized in that, A retaining ring (412) is provided on the front end face of the sleeve (41). The outer diameter of the retaining ring (412) is larger than the outer diameter of the sleeve (41). When the retaining ring (412) contacts the movable block (43), there is a distance between the bottom of the rear end of the movable rod (42) and the rear end face of the sleeve (41).

6. An intelligent plasma arc welding machine for manufacturing automobile shock absorbers according to claim 1, wherein, A water guide groove (11) is provided on the top of the machine table (1). The bottom of the water guide groove (11) is in a slope shape. A water return pipe (12) is provided at the low position end of the water guide groove (11). A water storage tank (13) is provided on the outside of the machine table (1). The water inlet pipe (411) and the water return pipe (12) are both communicated with the water storage tank (13).

7. The usage method of an intelligent plasma arc welding machine for producing automobile shock absorbers according to claim 1, characterized in that, It includes the following steps: S1. Clamp the first component (6) on the chuck (32), and then sleeved the second component (7) outside several movable blocks (43) so that the first component (6) and the second component (7) are coaxial but separated from each other; S2. The water inlet pipe (411) conveys water into the sleeve (41) so that the piston (425) moves in the cavity (421) and pushes the tray (423) and the movable block (43) to generate a displacement along the axial direction of the movable rod (42) until the first component (6) and the second component (7) are completely butted; S3. Adjust the position of the welding torch (2) so that the welding torch (2) is located at the butting position of the first component (6) and the second component (7), and then the motor (33) drives the rotating seat (31) and the chuck (32) to rotate, and the welding torch (2) starts welding; S4. After the rotating seat (31) rotates one week, turn off the motor (33) and the welding torch (2), and the welding operation is completed; S5. The chuck (32) releases the clamping of the first component (6), the water inlet pipe (411) pumps water outwards so that several movable blocks (43) are reset, and the welded first component (6) and the second component (7) are taken off from the support mechanism (5), and it is completed.

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