Intelligent plasma arc welding machine for producing automobile shock absorber and using method of intelligent plasma arc welding machine

Abstract

The invention discloses an intelligent plasma arc welding machine for producing an automobile shock absorber and a using method thereof. Relates to the technical field of welding equipment. Comprising a machine table and a welding gun 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 supporting mechanism is arranged between the first clamping mechanism and the second clamping mechanism; the first clamping mechanism comprises a rotating seat, a chuck and a motor, and the motor is used for driving the chuck to rotate; and the second clamping mechanism comprises a sleeve, a movable rod and a plurality of movable blocks, the sleeve is fixedly arranged, the movable blocks are annularly arranged on the outer side of the front end of the movable rod, and the movable blocks can reciprocate in the axial direction of the movable rod. Through the supporting effect of the first clamping mechanism, the second clamping mechanism and the supporting mechanism, the clamping effect on the first component and the second component is improved, and the welding precision is remarkably improved.

Description

Technical Field

[0001] The present application relates to the technical field of welding equipment, and in particular to an intelligent plasma arc welding machine for producing automobile shock absorbers and a method for using the same. Background Art

[0002] Automobile shock absorbers are used to suppress the vibration caused by the rebound of the spring after absorbing shock and the impact from the road. In order to accelerate the attenuation of the vibration of the frame and body to improve the smoothness of the car's ride, the shock absorber can be used to suppress the spring's own reciprocating motion and jumping when passing through uneven roads.

[0003] A Chinese patent document with the announcement number CN219818488U discloses a tube shell welding tool for automobile shock absorbers, and specifically discloses a bottom plate, the rear end of the upper surface of the bottom plate is fixedly connected to a mounting plate, and the rear end outer wall of the mounting plate is fixedly connected to a first servo motor. In the utility model, through the first servo motor, when in use, one end of the tube shell is first placed in the placement groove, and then the clamping plate is extended by controlling the electric telescopic rod, so that the clamping plate clamps the tube shell, and then the rotating disk is driven to rotate by the first servo motor, so that the tube shell is rotated, avoiding the problem that the staff needs to hold the welding gun to rotate or manually rotate the tube shell to rotate, and the clamping plate is driven to move by the electric telescopic rod, so that the rotating disk can adapt to different tube shells.

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

[0005] In order to overcome the deficiencies of the prior art, the present application provides an intelligent plasma arc welding machine for producing automobile shock absorbers and a method of using the same.

[0006] In the first aspect, the present application provides an intelligent plasma arc welding machine for producing automobile shock absorbers, which adopts the following technical solution:

[0007] An intelligent plasma arc welding machine for producing automobile shock absorbers comprises a machine platform and a welding gun arranged on the machine platform, a first clamping mechanism is arranged on one side of the top of the machine platform, a second clamping mechanism is arranged on the other side of the top of the machine platform, and a supporting mechanism is arranged between the first clamping mechanism and the second clamping mechanism;

[0008] The first clamping mechanism includes a rotating seat, a chuck and a motor, the chuck is arranged on one side of the rotating seat, and the motor is arranged on the other side of the rotating seat, and 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 block is wedge-shaped, and a plurality of the movable blocks are arranged on the outer side of the front end of the movable rod, and the plurality of the movable blocks can reciprocate along the axial direction of the movable rod.

[0009] By adopting the above technical solution, the chuck realizes the clamping effect on the longer first component, and the plurality of movable blocks realize the clamping effect on the shorter second component. In this way, the first component and the second component are both reliably clamped, and after the motor drives the rotating seat 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, thereby reliably realizing the welding effect on 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 accuracy.

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

[0011] By adopting the above technical solution, the outer diameter of the expansion part can adapt to the second parts of different sizes, that is, by moving the expansion part in the second part, when interference occurs between the expansion part and the second part, the position of the second part is fixed. The support mechanism is close to the second part, which can improve the clamping and supporting effect of the chuck and the support mechanism on the first part.

[0012] Optionally, the supporting mechanism includes a base and a pair of bearing seats, the pair of bearing seats are arranged 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 seat to rotate, the first component can reliably rotate between a pair of bearing seats, thereby ensuring that the welding machine can complete the welding 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 connected to 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, and the plurality of connecting rods correspond to the plurality of movable blocks one by one. The connecting rod is L-shaped, and 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, and the outer wall of the piston is in contact with the inner wall of the cavity; a water hole connected to the cavity is provided at the bottom of the rear end of the movable rod, and a water inlet pipe is provided on the outer wall of the sleeve, and the water inlet pipe is used to transport water into the sleeve, and 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 push the piston, and the movable block and the piston are connected by a connecting rod and a tray. In this way, the piston will cause the movable block to move, so that the movable block can expand and support the second component, thereby achieving clamping of the second component.

[0016] Optionally, the radial cross-section of the tray is U-shaped, the vertical portion 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 portion 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 connecting action of the first bolt, the connecting rod and the pallet can be reliably connected, and under the lifting and limiting action of the pallet, the movable block can be reliably driven, thereby realizing adaptive clamping of the second component.

[0018] Optionally, a retaining ring is provided on the front end face of the sleeve, and 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 rear end bottom 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, ensuring that space for water to pass through can be reserved between the movable rod and the sleeve, thereby ensuring that the water can enter the cavity through the water hole and realize the pushing effect on the piston.

[0020] Optionally, a water pipe is provided in the cavity, and the piston divides the cavity into a left chamber and a right chamber that are not connected to each other. One end of the water pipe passes through the front end face of the movable rod and is connected to the outside, and the other end of the water pipe passes through the left chamber and the piston and is connected to the right chamber; a pressure differential valve is provided on the water pipe, and the pressure differential valve is located in the left chamber. When a plurality of the movable blocks clamp the second component, the pressure differential 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, in 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 continue to move, the water pressure in the right chamber will gradually increase and open the differential pressure valve. The water body can be sprayed from the water pipe to the inner side of the second component, thereby achieving rapid cooling of the weld and improving the overall processing efficiency.

[0022] Optionally, a first mesh plate is provided in the right chamber, the end of the water pipe is connected to the first mesh plate after passing through the piston, a second mesh plate is provided inside the front end of the water pipe, a screw is screwed on the second mesh plate through a thread, a threaded sleeve is provided at the end of the screw away from the second mesh plate, a water guide plate is provided on the outer wall of the threaded sleeve, the water guide plate is arc-shaped, and the water guide plate is used to change the flow direction of water sprayed from the water pipe; a water guide groove is provided on the top of the machine, the bottom of the water guide groove is sloped, a return pipe is provided at the low end of the water guide groove, a water storage tank is provided on the outside of the machine, and the water inlet pipe and the return pipe are both connected to the water storage tank.

[0023] By adopting the above technical solution, the water will hit the water guide plate after spraying out of the water guide pipe, thereby realizing that the water is dispersed from the axial spray along the water guide pipe to the radial spray along the water guide pipe, thereby ensuring that the water can fully contact the inner wall of the second component and improve the cooling effect; after the water is sprayed out from the water guide pipe and cools the second component, it will flow from the inside of the second component to the outside of the second component and fall into the water guide groove, and then be recovered into the water tank through the return pipe for reuse.

[0024] Optionally, a first flange is provided at both the input and output ends of the differential pressure valve, the water pipe is cut off at the differential pressure valve, a second flange and a third flange are provided at the cutoff, the second flange is connected to one of the first flanges, the third flange is connected to another of the first flanges, and 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 by 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 with the side of the movable block close to the movable plate; when the connecting rod contacts the third flange, the piston is located on the outside of the sliding hole.

[0025] By adopting the above technical solution, the third flange can limit the movement of the piston, ensuring that the right chamber will not be in a connected state with the sliding hole, thereby ensuring that the water body can reliably drive the piston to produce displacement; at the same time, the hemispherical end of the second bolt can support the movable block, ensuring that the movable block can slide more smoothly.

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

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

[0028] S1, clamping the first component on the chuck, and then sleeve the second component on the outside of a plurality of movable blocks, so that the first component and the second component are in a coaxial but separated state;

[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 block to move along the axial direction of the movable rod until the first component and the second component are completely docked;

[0030] S3, adjusting the position of the welding gun so that the welding gun is located at the joint of the first component and the second component, and then the motor drives the rotating seat and the chuck to rotate, and the welding gun starts welding;

[0031] S4. After the rotating seat rotates one circle, the motor and welding gun are turned off, and the welding operation is completed;

[0032] S5, the chuck releases the clamping of the first component, the water inlet pipe pumps water outward to reset the plurality of movable blocks, and the welded first component and the second component are removed from the supporting mechanism, and the process is completed.

[0033] By adopting the above technical solution, the welding accuracy of the first component and the second component can be improved, and the temperature of the weld can be cooled simultaneously during the welding process, thereby improving the processing efficiency.

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

[0035] 1. The first component is clamped by the first clamping mechanism, and the second component is clamped by the second clamping mechanism, thereby improving the clamping effect of the first component and the second component, thereby improving the docking effect between the first component and the second component, and significantly improving the welding accuracy.

[0036] 2. The driving effect of the water on the piston is used to drive the movable block, so that the second component can be adaptively clamped after the wedge-shaped movable block moves, thereby maximizing the clamping effect and efficiency of the second component.

[0037] 3. Through the water guide plate's diversion effect on the water body, the water body can be sprayed more evenly to the weld between the first component and the second component, which has a cooling effect on the weld, and is beneficial to improving the overall processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the present application. Figure 1 ;

[0039] Figure 2 It is a schematic diagram of the present application. Figure 2 ;

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

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

[0042] Figure 5 It is a reference diagram of the explosion state of the movable rod;

[0043] Figure 6 This is a reference diagram of the assembly status of the water pipe and the differential pressure valve;

[0044] Figure 7 It is a reference diagram of the explosion state of the water guide plate and the water guide pipe;

[0045] In the figure: 1, machine; 11, water guide trough; 12, water return pipe; 13, water storage tank;

[0046] 2. Welding gun;

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

[0048] 4. Second clamping mechanism; 41. Casing; 411. Water inlet pipe; 412. Retaining ring; 42. Movable rod; 421. Cavity; 4211. Left chamber; 4212. Right chamber; 422. Sliding 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. Screw rod; 4274. Threaded sleeve; 4275. Water guide plate; 4276. Second flange; 4277. Third flange; 4278. Second bolt; 428. Pressure differential valve; 4280. First flange; 43. Movable block;

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

[0050] 6. The first component;

[0051] 7. The second part. DETAILED DESCRIPTION

[0052] Below, combined with the attached Figure 1-7 As well as specific implementation methods, the present application is further described. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

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

[0054] Figure 1 This is the adaptive stereoscopic Figure 1 , Figure 2 This is the adaptive stereoscopic Figure 2 See also Figure 1 and Figure 2 , an intelligent plasma arc welding machine for producing automobile shock absorbers, comprising a machine platform 1 and a welding gun 2 arranged on the machine platform 1, a first clamping mechanism 3 is arranged on one side of the top of the machine platform 1, a second clamping mechanism 4 is arranged on the other side of the top of the machine platform 1, a supporting mechanism 5 is arranged between the first clamping mechanism 3 and the second clamping mechanism 4, the workpiece to be welded comprises a first component 6 and a second component 7 both of which are tubular, the length of the first component 6 is greater than the length of the second component 7, the first clamping mechanism 3 is used to clamp the first component 6, the second clamping mechanism 4 is used to clamp the second component 7, and the supporting mechanism 5 is arranged close to the second clamping mechanism 4, so that the first component 6 can remain stable under the clamping action of the first clamping mechanism 3 and the supporting action of the supporting mechanism 5, thereby improving the concentricity of the first component 6 and the second component 7 after docking.

[0055] See also Figure 2 The first clamping mechanism 3 includes a rotating seat 31, a chuck 32 and a motor 33. The chuck 32 is arranged on one side of the rotating seat 31, and the motor 33 is arranged on the other side of the rotating seat 31. The motor 33 is used to drive the chuck 32 to rotate. The supporting mechanism 5 includes a base 51 and a pair of bearing seats 52. The pair of bearing seats 52 are arranged 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 support the first component 6, but will not affect 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 seat 31 to rotate, thereby realizing the synchronous rotation of the first component 6 and the second component 7. In this way, only the initial position of the welding gun 2 needs to be adjusted and fixed, and the ring 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 a schematic three-dimensional diagram of the second clamping mechanism, Figure 4 is a cross-sectional view of the internal structure of the second clamping mechanism. Figure 3 and Figure 4 Combined 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 block 43 is wedge-shaped. The plurality of movable blocks 43 are arranged around 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, while the straight surface of the movable block 43 faces the outer wall of the movable rod 42. In this way, the plurality of movable blocks 43 can form an expansion portion, the outer diameter of the expansion portion gradually decreases in the direction toward the chuck 32, and the outer wall of the expansion 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 radial opening and closing of the chuck 32 along the movable rod 42, and the second clamping mechanism 4 can be clamped on the inner wall of the second component 7 through the axial movement of the movable block 43 along the movable rod 42. These two methods can reliably clamp different components to be welded.

[0057] Figure 5 This is a reference diagram of the explosion state of the movable rod. Figure 5 Combined with Figure 4The movable rod 42 has a cavity 421 inside, and the cavity 421 is cylindrical. A piston 425 is arranged inside the cavity 421. The outer wall of the piston 425 is in contact with the inner wall of the cavity 421. In this way, the piston 425 divides the cavity 421 into a left chamber 4211 and a right chamber 4212 that are not connected to each other. A water inlet pipe 411 is arranged on the outer wall of the sleeve 41. A water hole 426 is arranged at one end of the movable rod 42 that passes through the sleeve 41. When the water inlet pipe 411 transports water into the sleeve 41, the water enters the right chamber 4212 through the water hole 426. As the water is continuously input, the water pushes the piston 425 to move in the cavity 421, and the volumes of the left chamber 4211 and the right chamber 4212 also change accordingly. A tray 423 is provided on the piston 425, and the tray 423 is located in the left chamber 4211. A plurality of sliding holes 422 are provided on the outer wall of one end of the movable rod 42 located outside the sleeve 41, and 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, and a plurality of connecting rods 424 are provided in the tray 423, and the connecting rods 424 are L-shaped. The plurality of connecting rods 424 are respectively and one-to-one arranged with the plurality of movable blocks 43. Specifically, the vertical end of the connecting rod 424 is connected to the vertical part of the tray 423 by a first bolt 4230, and 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 connecting action of the connecting rod 424, the movable block 43 will not fall off from the movable rod 42. A sealing ring or other sealing and limiting mechanism may 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, thereby ensuring 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 pushes the piston 425 to displace, the movable block 43 will also displace, so that several movable blocks 43 will extend toward the front end of the movable rod 42 and enter the inner side of the second component 7 until the outer wall of the movable block 43 and the inner wall of the second component 7 are engaged. At this time, several movable blocks 43 form an expansion support for the second component 7, and then the second component 7 is clamped by the extrusion force between the movable block 43 and the second component 7. Since the movable block 43 is wedge-shaped, several movable blocks 43 can clamp the second component 7 with different inner diameters. Furthermore, it is only necessary to monitor the water inlet pressure of the water inlet pipe 411. When the water inlet pressure increases significantly, it means that the movable block 43 has been fitted with the second component 7. At this time, it is only necessary to maintain the water pressure, which makes the clamping operation of the second component 7 more intelligent and convenient.

[0059] Figure 6 This is a reference diagram of the assembly status of the water pipe and the differential pressure valve. Figure 6 Combined with Figure 4and Figure 2 A water pipe 427 and a first mesh plate 4271 are provided in the cavity 421. The first mesh plate 4271 is located in the right chamber 4212. One end of the water pipe 427 is connected to the first mesh plate 4271. The other end of the water pipe 427 passes through the piston 425 and is connected to the front end face of the movable rod 42. That is to say, a part of the water pipe 427 is located in the left chamber 4211, and the other part is located in the right chamber 4212. Moreover, the cavity 421 connected by the water pipe 427 is connected to the outside world. In this way, the water can be discharged outward through the water pipe 427 after entering the right chamber 4212. Furthermore, the water pipe 427 is cut off in the right chamber 4212, and a second flange 4276 is provided at the end of one section of the water pipe 427, and a third flange 4277 is provided at the end of the other section of the water pipe 427. The third flange 4277 is close to the tray 423, and a differential pressure valve 428 is provided at the cutoff point. The input and output ends of the differential pressure valve 428 are both provided with a first flange 4280, 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 pipe 427. The first flange 4280 and the second flange 4276 are separated from the inner wall of the cavity 421, and the radial 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, and the end of the bolt extends to the outside of the movable rod 42. 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 on the top of the machine 1, and the bottom of the water guide groove 11 is sloped. A return pipe 12 is provided at the lower end of the water guide groove 11. A water storage tank 13 is provided on the outside of the machine 1, and the water inlet pipe 411 and the return pipe 12 are both connected to 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 reaches a set value, the water can push the piston 425 to move, and the differential pressure valve 428 is still in a closed state. When 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 reaches another set value, the differential pressure valve 428 opens, and the water can be sprayed out from the water pipe 427, that is, sprayed into the inside of the second component 7, thereby achieving a cooling effect on the weld produced by welding the first component 6 and the second component 7, so that the staff can quickly and safely take the welded first component 6 and the second component 7 after welding is completed. The third flange 4277 is U-shaped and can cooperate with the first mesh plate 4271 to fix the water pipe 427. At the same time, the third flange 4277 can also limit 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 on the outside of the sliding hole 422, thereby ensuring that water will not spray out from the sliding hole 422.

[0061] Figure 7 This is a reference diagram of the explosion state of the water guide plate and the water guide pipe. Figure 7 Combined with Figure 2 and Figure 4 The front end of the water pipe 427 is provided with a second mesh plate 4272, on which a screw rod 4273 is screwed by a thread, and a threaded sleeve 4274 is provided at one end of the screw rod 4273 away from the second mesh plate 4272, and a water guide plate 4275 is provided on the outer wall of the threaded sleeve 4274, and the water guide plate 4275 is arc-shaped. When the water body is ejected from the water pipe 427, it will hit the water guide plate 4275, so that the water guide plate 4275 changes the movement direction of the water body from the axial injection along the movable rod 42 to the radial injection along the movable rod 42, so that the water body can be more directly and fully contacted with the welding, thereby improving the cooling effect. After the water body is ejected from the water pipe 427 and the temperature of the weld is completely cooled, 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 return pipe 12 arranged on the low side of the water guide groove 11, so as to recycle and reuse the water body. Furthermore, the distance between the water guide plate 4275 and the movable rod 42 can be adjusted by rotating the screw rod 4273 and the threaded sleeve 4274, so as to ensure that the water body can fall close to the weld but not directly on the weld, and prevent the weld from cooling too fast and affecting the welding effect. The water guide plate 4275 is arc-shaped. Depending on the installation method, 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 body will also change, so that the injection and cooling of the water body can be reliably controlled according to different welding conditions and requirements.

[0062] See also Figure 2 and Figure 3 The front end face of the sleeve 41 is provided with a retaining ring 412, and 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 rear end bottom 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 space for water to pass between the end of the movable rod 42 and the end of the sleeve 41, which also ensures that the water can enter the cavity 421 through the water hole 426 after being discharged from the water inlet pipe 411, thereby achieving the push on the movable block 43 and the cooling effect on the weld. Further, the retaining ring 412 can also cut off the backflow of the water body, that is, the water body cannot move toward the direction of the sleeve 41 after contacting the retaining ring 412, ensuring that the water body can completely fall into the water guide groove 11, improving the recovery efficiency of the water body and preventing the water body from flowing around and polluting the environment.

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

[0064] A method for using an intelligent plasma arc welding machine for producing automobile shock absorbers comprises the following steps:

[0065] S1, clamp the first component 6 on the chuck 32, and then sleeve the second component 7 on the outside of the plurality of movable blocks 43, so that the first component 6 and the second component 7 are in a coaxial but separated state;

[0066] S2, the water inlet pipe 411 delivers 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 move along the axial direction of the movable rod 42 until the first component 6 and the second component 7 are completely docked;

[0067] S3, adjusting the position of the welding gun 2 so that the welding gun 2 is located at the joint 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 gun 2 starts welding;

[0068] S4, after the rotating seat 31 rotates one circle, the motor 33 and the welding gun 2 are turned off, and the welding operation is completed;

[0069] S5, the chuck 32 releases the clamping of the first component 6, the water inlet pipe 411 pumps water outward to reset the plurality of movable blocks 43, and the welded first component 6 and second component 7 are removed from the supporting mechanism 5, and the process is completed.

[0070] The above-mentioned implementation modes are only preferred implementation modes of the present application and cannot be used to limit the scope of protection of the present application. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present application shall fall within the scope of protection required by the present application.

Claims

1. An intelligent plasma arc welding machine for producing automobile shock absorbers, comprising a machine platform (1) and a welding gun (2) arranged on the machine platform (1), characterized in that: A first clamping mechanism (3) is provided on one side of the top of the machine platform (1), a second clamping mechanism (4) is provided on the other side of the top of the machine platform (1), and a supporting mechanism (5) is provided between the first clamping mechanism (3) and the second clamping mechanism (4); The first clamping mechanism (3) comprises a rotating seat (31), a chuck (32) and a motor (33), wherein the chuck (32) is arranged on one side of the rotating seat (31), and the motor (33) is arranged on the other side of the rotating seat (31), and the motor (33) is used to drive the chuck (32) to rotate; The second clamping mechanism (4) comprises 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 block (43) is wedge-shaped; a plurality of the movable blocks (43) are arranged around the outer side of the front end of the movable rod (42); and the plurality of the movable blocks (43) can reciprocate along the axial direction of the movable rod (42).

2. The intelligent plasma arc welding machine for producing automobile shock absorbers according to claim 1, characterized in that: The chuck (32) is used to clamp a first component (6) of a relatively large length, and the chuck (32) is clamped on the outer wall of the first component (6); A plurality of the movable blocks (43) are used to clamp a second component (7) of shorter length. A plurality of the 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 the expansion portion is clamped on the inner wall of the second component (7), and the support mechanism (5) is close to the second component (7).

3. The intelligent plasma arc welding machine for producing automobile shock absorbers according to claim 2 is 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. The intelligent plasma arc welding machine for producing automobile shock absorbers according to claim 1, characterized in that: A cavity (421) is provided inside the movable rod (42), and a plurality of sliding holes (422) communicating with the cavity (421) are provided on the front end outer wall of the movable rod (42), and a tray (423) and a plurality of connecting rods (424) are provided in the cavity (421), and the plurality of connecting rods (424) correspond one to one with the plurality of movable blocks (43), and the connecting rod (424) is L-shaped, and one end of the connecting rod (424) is connected to the tray (423), and the other end of the connecting rod (424) passes through the sliding hole (422) and is connected to the movable block (43); A piston (425) is provided at the bottom of the tray (423), and the outer wall of the piston (425) is in contact 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), and the water inlet pipe (411) is used to transport water into the sleeve (41). The water enters the cavity (421) through the water hole (426) and pushes the piston (425).

5. The intelligent plasma arc welding machine for producing automobile shock absorbers according to claim 4 is characterized in that: The radial cross-section of the tray (423) is U-shaped, the vertical portion of the tray (423) is in contact with the vertical end of the connecting rod (424) and is connected via a first bolt (4230), there is a gap between the vertical portion 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).

6. The intelligent plasma arc welding machine for producing automobile shock absorbers according to claim 4, characterized in that: The front end face of the sleeve (41) is provided with a retaining ring (412), the outer diameter of the retaining ring (412) being larger than the outer diameter of the sleeve (41), and when the retaining ring (412) contacts the movable block (43), there is a distance between the rear end bottom of the movable rod (42) and the rear end face of the sleeve (41).

7. The intelligent plasma arc welding machine for producing automobile shock absorbers according to claim 6, characterized in that: A water conduit (427) is provided in the cavity (421), and the piston (425) divides the cavity (421) into a left chamber (4211) and a right chamber (4212) which are not connected to each other. One end of the water conduit (427) passes through the front end surface of the movable rod (42) and is connected to the outside, and the other end of the water conduit (427) passes through the left chamber (4211) and the piston (425) and is connected to 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 a plurality of the movable blocks (43) clamp the second component (7), the differential pressure valve (428) can be in an open state.

8. The intelligent plasma arc welding machine for producing automobile shock absorbers according to claim 7, characterized in that: 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); A water guide groove (11) is provided on the top of the machine (1), the bottom of the water guide groove (11) is sloped, a return pipe (12) is provided at the lower end of the water guide groove (11), a water storage tank (13) is provided on the outside of the machine (1), and the water inlet pipe (411) and the return pipe (12) are both connected to the water storage tank (13).

9. The intelligent plasma arc welding machine for producing automobile shock absorbers according to claim 7, characterized in that: 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).

10. The method for using the intelligent plasma arc welding machine for producing automobile shock absorbers according to claim 8, characterized in that: The steps include: S1, clamping the first component (6) on the chuck (32), and then sleeve-mounting the second component (7) on the outer sides of a plurality of movable blocks (43), so that the first component (6) and the second component (7) are in a coaxial but mutually separated state; S2, the water inlet pipe (411) delivers 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 move along the axial direction of the movable rod (42) until the first component (6) and the second component (7) are completely docked; S3, adjusting the position of the welding gun (2) so that the welding gun (2) is located at the joint between 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 gun (2) starts welding; S4, after the rotating base (31) rotates one circle, the motor (33) and the welding gun (2) are turned off, 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 outward to reset the plurality of movable blocks (43), and the welded first component (6) and second component (7) are removed from the support mechanism (5), and the process is completed.

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