Welding device for constant-pressure water replenishing vacuum degasser assembly and using method of welding device

Abstract

The invention relates to the technical field of welding devices, in particular to a welding device for a constant-pressure water replenishing vacuum degasser component, which comprises a base with a hollow structure and a welding head, the upper surface of the base is fixedly connected with a processing cover and a positioning sleeve, and two rotating shafts and a gear ring are rotatably mounted on the base; wherein one rotating shaft is fixedly connected with a rotating gear, the rotating gear is connected with the gear ring in a meshed mode, and an extrusion assembly is arranged on the machining cover. Two sliding assemblies are arranged on the base, each sliding assembly comprises a moving plate connected with the base through a first spring, and the moving plates are connected with the corresponding rotating shafts through first pull ropes. According to the welding device, the dislocation phenomenon can be effectively avoided, after a workpiece is welded, large deviation of the welding position can be effectively avoided, the welding quality of the assembly is good, and welding treatment of the constant-pressure water supplementing vacuum degasser assembly is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of welding devices, and in particular to a welding device for a constant-pressure water-supplementing vacuum degasser assembly and a use method thereof. Background Art

[0002] With the continuous development of society and the continuous advancement of science and technology, the technology related to welding equipment is also constantly improving. The constant pressure water replenishment vacuum degassing unit is a new type of equipment developed using international advanced technology to achieve the three-in-one constant pressure, water replenishment and vacuum degassing of central heating and central air-conditioning systems. The constant pressure water replenishment vacuum degassing unit consists of a degassing tank, a normal pressure tank, a unit and other components.

[0003] At present, when welding the components of a constant-pressure water-making vacuum degasser using a welding device, the two workpieces are prone to misalignment, which results in a large deviation in the welding position after the workpieces are welded, and the welding quality of the components is poor, which is not conducive to the welding of the components of the constant-pressure water-making vacuum degasser. Summary of the invention

[0004] The purpose of the present invention is to solve the following shortcomings in the prior art. At present, when a welding device is used to weld a constant-pressure water-making vacuum degasser component, the two workpieces are easily misaligned, resulting in a large deviation in the welding position after the workpieces are welded, and the welding quality of the component is poor, which is not conducive to the welding of the constant-pressure water-making vacuum degasser component. A welding device for a constant-pressure water-making vacuum degasser component and a method of using the same are proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A welding device for a constant-pressure water-supplementing vacuum degasser assembly comprises a base with a hollow structure and a welding head, wherein a processing cover and a positioning sleeve are fixedly connected to the upper surface of the base, two rotating shafts and a gear ring are rotatably mounted on the base, wherein a rotating gear is fixedly connected to one of the rotating shafts, and the rotating gear is meshedly connected to the gear ring, and an extrusion assembly is arranged on the processing cover;

[0007] Two sliding assemblies are arranged on the base, each of the sliding assemblies comprises a moving plate connected to the base via a first spring, and the moving plate is connected to the corresponding rotating shaft via a first pull rope;

[0008] A sliding rod is fixedly connected to one side surface of each movable plate, and one end of the sliding rod passes through the processing cover and is connected to a clamping block through a second spring. A rotating component is provided on each clamping block, and the rotating component includes two rectangular plates, a rotating rod and a clamping plate made of rubber material. The two rectangular plates are fixedly connected to the lower surface of the clamping block, the rotating rod is rotatably connected to the two rectangular plates, the clamping plate is fixedly connected to the rotating rod, and a pulling component is provided on each sliding rod.

[0009] As a preferred embodiment, the extrusion assembly includes a support rod and an extrusion block with a T-shaped cross-section, the upper end of the support rod is fixedly connected to the upper inner wall of the processing cover, a return spring is sleeved on the extrusion block, one end of the return spring is fixedly connected to the extrusion block, the other end of the return spring is fixedly connected to the support rod, and a rubber block is fixedly connected to the lower surface of the extrusion block.

[0010] As a preferred solution, two symmetrically arranged sliders are slidably mounted on the upper inner wall of the processing cover, one side of each slider is hinged with a hinge rod, the hinge rod is hinged to the extrusion block, one side surface of each movable plate is fixedly connected with a cross bar, and two through holes for connecting the cross bars are provided on the processing cover.

[0011] As a preferred solution, each of the pulling assemblies includes a bending rod fixedly connected to the sliding rod, and the bending rod is connected to the corresponding rotating rod through a second pull rope.

[0012] As a preferred solution, a torsion spring is sleeved on each of the rotating rods, one end of the torsion spring is fixedly connected to the rotating rod, and the other end of the torsion spring is fixedly connected to the corresponding rectangular plate.

[0013] As a preferred solution, an extrusion rod is fixedly connected to one of the rotating rods, a fixed block is fixedly connected to the inner surface of the processing cover, and a sliding button is slidably mounted on the lower surface of the fixed block.

[0014] As a preferred solution, a fixing ring is fixedly installed on the upper inner wall of the base, and airbags are fixedly installed on both sides of the fixing ring. Each airbag is provided with an air outlet and an air inlet, and a one-way valve is provided in the air inlet and the air outlet. A compression chamber connected to the two air outlets is provided inside the fixing ring.

[0015] As a preferred solution, a first exhaust hole is provided on the upper inner wall of the compression chamber, a sealing plate is fixedly connected to one side of one of the movable plates, two openings for horizontal movement of the sealing plate are provided on the fixed ring, a second exhaust hole is provided on the sealing plate, a mounting cavity connected to the fixed ring is provided in the gear ring, a mounting column is fixedly connected to the upper surface of the gear ring, the welding head is fixedly arranged at one end of the mounting column, an inclined tube is fixedly connected to the mounting column, a channel connected to the inclined tube and the mounting cavity is provided in the mounting column, and a third exhaust hole is provided on the upper inner wall of the mounting cavity.

[0016] As a preferred solution, the two rotating shafts are fixedly connected with transmission wheels, and the two transmission wheels are connected by a transmission belt.

[0017] The method for using the welding device for the constant pressure water replenishment vacuum degasser assembly comprises the following steps:

[0018] S1: Place two workpieces to be welded up and down, and place the lower workpiece to be welded inside the positioning sleeve;

[0019] S2: The servo motor drives the rotating shaft to rotate slowly in one direction, the gear ring rotates slowly, the two rotating shafts rotate at the same time, and the two first pull ropes are wound up. When the two clamping blocks are respectively in close contact with the two side surfaces of the upper workpiece to be welded, the two clamping plates are in close contact with the two side surfaces of the two workpieces to be welded at the same time, so that the two workpieces to be welded are completely facing each other, which can effectively avoid the phenomenon of misalignment, and the rubber block is in close contact with the upper surface of the upper workpiece to be welded;

[0020] S3: The servo motor continues to drive the two shafts to continue rotating in the same direction, and the clamping plate will rotate in the direction away from the workpiece. After the clamping plate rotates, it will no longer contact the surface of the workpiece below, and the weld will be completely exposed on the outside. Subsequently, the extrusion rod squeezes the sliding button, and the welding head works and welds the weld between the two workpieces;

[0021] S4: After the welding of the two workpieces is completed, the servo motor drives the shaft to rotate in the opposite direction, and the shaft unwinds the first pull rope. When the inclined tube rotates, the gas inside the compression chamber is discharged from the pipe mouth of the inclined tube, which can speed up the circulation speed of the air around the annular weld.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. When the rubber surfaces of the two clamping blocks are respectively in close contact with the two side surfaces of the workpiece to be welded above, the rubber surfaces of the two clamping plates are in close contact with the two side surfaces of the two workpieces to be welded at the same time, and the rubber block on the lower surface of the extrusion block is in close contact with the upper surface of the workpiece to be welded above. Under the common limiting action of the two clamping plates, the two workpieces to be welded can be completely facing each other, which can effectively avoid the phenomenon of misalignment. After the workpieces are welded, a large deviation in the welding position can be effectively avoided, and the welding quality of the components is better, which is conducive to the welding treatment of the components of the constant pressure water replenishment vacuum degasser;

[0024] 2. When the clamping plate rotates in the direction away from the workpiece, it will no longer contact the surface of the workpiece below, and the weld will be completely exposed on the outside. After the extrusion rod rotates with the rotating rod, it will move against the lower surface of the sliding button and squeeze the sliding button. The welding head will automatically start working. The mounting column and the welding head will rotate with the gear ring to weld the weld between the two workpieces. There is no need to manually weld the workpiece, and the welding efficiency of the workpiece is high.

[0025] 3. The first exhaust hole and the second exhaust hole are arranged face to face. When the gear ring rotates, the inclined tube will be driven to rotate. The gas inside the compression chamber will pass through the first exhaust hole, the second exhaust hole, the third exhaust hole and the channel in turn, and finally be discharged through the inclined tube. The nozzle of the inclined tube faces the weld. When the inclined tube rotates and the gas is discharged from the nozzle, the circulation speed of the air around the annular weld can be accelerated, which is beneficial to accelerate the cooling of the weld, so as to facilitate the welding process of the constant pressure water replenishment vacuum degasser assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a front structural schematic diagram of a welding device for a constant-pressure water-supplementing vacuum degasser assembly proposed by the present invention;

[0027] Figure 2 A schematic diagram of the side structure of a welding device for a constant-pressure water-supplementing vacuum degasser assembly proposed by the present invention;

[0028] Figure 3 A schematic diagram of the internal structure of a welding device for a constant-pressure water-supplementing vacuum degasser assembly proposed by the present invention;

[0029] Figure 4 It is a schematic diagram of the back structure of the clamping block and the rotating rod in the present invention;

[0030] Figure 5 This is a schematic diagram of the internal structure of the base in the present invention when viewed from above;

[0031] Figure 6 for Figure 2 A is a schematic diagram of the partially enlarged structure of the middle part;

[0032] Figure 7 It is a schematic diagram of the internal partial structure of the fixing ring in the present invention;

[0033] Figure 8 It is a schematic diagram of the internal partial bottom view structure of the fixing ring in the present invention;

[0034] Fig. 9 A schematic top view of the structure of a welding device for a constant-pressure water-supplementing vacuum degasser assembly proposed by the present invention;

[0035] Fig.10 This is a schematic diagram of the back structure of a welding device for a constant-pressure water-supplementing vacuum degasser assembly proposed by the present invention;

[0036] Fig.11 It is a schematic diagram of the internal structure of the gear ring in the present invention from a top view.

[0037] In the figure: 1 base, 2 positioning sleeve, 3 slide rod, 4 rotating rod, 5 clamp block, 6 hinge rod, 7 support rod, 8 extrusion block, 9 oblique tube, 10 welding head, 11 clamp plate, 12 cross bar, 13 bending rod, 14 second pull rope, 15 mounting column, 16 moving plate, 17 processing cover, 18 gear ring, 19 rotating gear, 20 first spring, 21 rotating shaft, 22 sealing plate, 23 air bag, 24 slider, 25 first pull rope, 26 third exhaust hole, 27 extrusion rod, 28 second spring, 29 rectangular plate, 30 torsion spring, 31 sliding button, 32 fixing block, 33 fixing ring, 34 transmission belt, 35 first exhaust hole, 36 compression chamber, 37 second exhaust hole. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] Reference Figure 1-Figure 11 A welding device for a constant-pressure water-making vacuum degasser assembly includes a base 1 with a hollow structure and a welding head 10. A processing cover 17 and a positioning sleeve 2 are fixedly connected to the upper surface of the base 1. Two rotating shafts 21 and a gear ring 18 are rotatably installed on the base 1. A rotating gear 19 is fixedly connected to one of the rotating shafts 21. The rotating gear 19 and the gear ring 18 are meshingly connected. An extrusion assembly is arranged on the processing cover 17. Two sliding assemblies are arranged on the base 1. Each sliding assembly includes a moving plate 16 connected to the base 1 through a first spring 20, and the moving plate 16 is connected to the corresponding rotating shaft 21 through a first pull rope 25.

[0040] A sliding rod 3 is fixedly connected to the surface of one side of each movable plate 16. One end of the sliding rod 3 that passes through the processing cover 17 is connected to a clamping block 5 through a second spring 28. A rotating component is provided on each clamping block 5. The rotating component includes two rectangular plates 29, a rotating rod 4 and a clamping plate 11 made of rubber material. The two rectangular plates 29 are fixedly connected to the lower surface of the clamping block 5. The rotating rod 4 is rotatably connected to the two rectangular plates 29. The clamping plate 11 is fixedly connected to the rotating rod 4. A pulling component is provided on each sliding rod 3. The clamping block 5 and the clamping plate 11 have good high temperature resistance. The diameter of the rotating shaft 21 is very small. The rotating shaft 21 can only reel in the shorter first pull rope 25 when it rotates one circle. Only the part of the T-shaped clamping block 5 that contacts the workpiece is made of rubber.

[0041] The extrusion assembly includes a support rod 7 and an extrusion block 8 with a T-shaped cross-section. The upper end of the support rod 7 is fixedly connected to the upper inner wall of the processing cover 17. A return spring is sleeved on the extrusion block 8. One end of the return spring is fixedly connected to the extrusion block 8, and the other end of the return spring is fixedly connected to the support rod 7. A rubber block is fixedly connected to the lower surface of the extrusion block 8. Two symmetrically arranged sliders 24 are slidably installed on the upper inner wall of the processing cover 17.

[0042] One side of each slider 24 is hinged with a hinge rod 6, and the hinge rod 6 and the extrusion block 8 are hinged. One side surface of each movable plate 16 is fixedly connected with a cross bar 12. Two through holes for connecting the cross bars 12 are provided on the processing cover 17. When the two cross bars 12 move together with the movable plate 16, one end of each cross bar 12 will pass through the through hole and move against the side of the corresponding slider 24, so that the distance between the slider 24 and the support rod 7 is reduced, the inclination angle of the hinge rod 6 is changed, and the extrusion block 8 moves downward at the same time and slides relative to the support rod 7, and the reset spring is deformed.

[0043] Each pulling assembly includes a bending rod 13 fixedly connected to the sliding rod 3, and the bending rod 13 is connected to the corresponding rotating rod 4 through a second pull rope 14. Each rotating rod 4 is sleeved with a torsion spring 30, one end of the torsion spring 30 is fixedly connected to the rotating rod 4, and the other end of the torsion spring 30 is fixedly connected to the corresponding rectangular plate 29. After the distance between each bending rod 13 and the rotating rod 4 is reduced, under the elastic force of the torsion spring 30, the rotating rod 4 will rotate relative to the rectangular plate 29 and reel in the second pull rope 14. An extrusion rod 27 is fixedly connected to one of the rotating rods 4, and a fixed block 32 is fixedly connected to the inner surface of the processing cover 17, and a sliding button 31 is slidably installed on the lower surface of the fixed block 32. After the extrusion rod 27 rotates with the rotating rod 4, it will move against the lower surface of the sliding button 31, thereby causing the sliding button 31 to slide relative to the fixed block 32, that is, the switch of the welding head 10 is turned on, and the welding head 10 automatically starts working.

[0044] A fixing ring 33 is fixedly installed on the upper inner wall of the base 1, and air bags 23 are fixedly installed on both sides of the fixing ring 33. Each air bag 23 is provided with an air outlet and an air inlet, and a one-way valve is provided in the air inlet and the air outlet. A compression chamber 36 connected to the two air outlets is provided inside the fixing ring 33, and a first exhaust hole 35 is provided on the upper inner wall of the compression chamber 36. A sealing plate 22 is fixedly connected to one side of one of the movable plates 16. Two openings for horizontal movement of the sealing plate 22 are provided on the fixing ring 33, and a second exhaust hole 37 is provided on the sealing plate 22.

[0045] A mounting cavity connected to the fixing ring 33 is provided in the gear ring 18, a mounting column 15 is fixedly connected to the upper surface of the gear ring 18, a welding head 10 is fixedly arranged at one end of the mounting column 15, an inclined tube 9 is fixedly connected to the mounting column 15, a channel connected to the inclined tube 9 and the mounting cavity is provided in the mounting column 15, a third exhaust hole 26 is provided on the upper inner wall of the mounting cavity, the first exhaust hole 35 is always in a facing state with the second exhaust hole 37, and when a large amount of gas is compressed inside the compression chamber 36, the gear ring 18 rotates, which drives the inclined tube 9 to rotate, and the gas inside the compression chamber 36 passes through the first exhaust hole 35, the second exhaust hole 37, the third exhaust hole 26 and the channel in turn, and is finally discharged through the inclined tube 9, the pipe mouth of the inclined tube 9 faces the weld, and when the inclined tube 9 rotates and the gas is discharged from the pipe mouth, the circulation speed of the air around the annular weld can be accelerated.

[0046] Both rotating shafts 21 are fixedly connected with transmission wheels, and the two transmission wheels are connected by a transmission belt 34. The servo motor drives the rotating shaft 21 to rotate slowly in one direction. Under the transmission action of the rotating gear 19, the gear ring 18 also rotates slowly. Under the joint transmission action of the two transmission wheels and the transmission belt 34, the other rotating shaft 21 rotates at the same time.

[0047] The method for using the welding device for the constant pressure water replenishment vacuum degasser assembly comprises the following steps:

[0048] S1: Place two workpieces to be welded one above the other, and place the lower workpiece to be welded inside the positioning sleeve 2;

[0049] S2: The servo motor drives the rotating shaft 21 to rotate slowly in one direction, the gear ring 18 rotates slowly, the two rotating shafts 21 rotate at the same time, and the two first pull ropes 25 are wound up. When the two clamping blocks 5 are respectively in close contact with the two side surfaces of the upper workpiece to be welded, the two clamping plates 11 are in close contact with the two side surfaces of the two workpieces to be welded at the same time, so that the two workpieces to be welded are completely facing each other, which can effectively avoid the phenomenon of misalignment, and the rubber block is in close contact with the upper surface of the upper workpiece to be welded;

[0050] S3: The servo motor continues to drive the two rotating shafts 21 to continue to rotate in the same direction, and the clamping plate 11 will rotate in the direction away from the workpiece. After the clamping plate 11 rotates, it will no longer contact the surface of the workpiece below, and the weld seam is completely exposed on the outside. Subsequently, the squeezing rod 27 squeezes the sliding button 31, and the welding head 10 works and performs welding processing on the weld seam between the two workpieces;

[0051] S4: After the welding of the two workpieces is completed, the servo motor drives the rotating shaft 21 to rotate in the opposite direction, and the rotating shaft 21 unwinds the first pull rope 25. When the inclined tube 9 rotates, the gas inside the compression chamber 36 is discharged from the pipe mouth of the inclined tube 9, which can speed up the circulation speed of the air around the annular weld.

[0052] In the present invention, when in use, two workpieces to be welded are placed up and down, and the lower workpiece to be welded is placed inside the positioning sleeve 2. At this time, the surface of the lower workpiece to be welded fits the upper surface of the base 1. Then the servo motor drives the rotating shaft 21 to rotate slowly in one direction. Under the transmission action of the rotating gear 19, the gear ring 18 also rotates slowly. Under the common transmission action of the two transmission wheels and the transmission belt 34, the other rotating shaft 21 rotates at the same time. Since one end of each first pull rope 25 is wound around the corresponding rotating shaft 21 and cannot be completely separated from the rotating shaft 21, the other end of the first pull rope 25 is fixedly connected to the corresponding movable plate 16. During the rotation of each rotating shaft 21, the two first pull ropes 25 can be reeled up respectively, and the two movable plates 16 slide relative to the base 1 at the same time. Since the two ends of each first spring 20 are respectively fixedly connected to the corresponding movable plate 16 and the base 1, the first spring 20 is deformed at the same time, and the distance between the two movable plates 16 is reduced.

[0053] When the two clamping blocks 5 move together with the two movable plates 16, the distance between the two clamping blocks 5 is reduced. When the two cross bars 12 move together with the movable plates 16, one end of each cross bar 12 will pass through the through hole and move against the side of the corresponding slider 24, so that the distance between the slider 24 and the support rod 7 is reduced, the inclination angle of the hinged rod 6 changes, the extrusion block 8 moves down at the same time and slides relatively with the support rod 7, and the reset spring is deformed. When the rubber material surfaces of the two clamping blocks 5 are respectively in close contact with the two side surfaces of the workpiece to be welded above, the rubber material surfaces of the two clamping plates 11 are in close contact with the two side surfaces of the workpiece to be welded at the same time, that is, the weld is blocked, and the rubber block on the lower surface of the extrusion block 8 is in close contact with the upper surface of the workpiece to be welded above. Under the common limiting action of the two clamping plates 11, the two workpieces to be welded can be made to face each other completely, which can effectively avoid the phenomenon of misalignment.

[0054] As the two rotating shafts 21 continue to rotate in the same direction, each rotating shaft 21 will continue to reel in the two first pull ropes 25. Under the pulling action of the first pull ropes 25, the movable plate 16 continues to move toward the processing cover 17. During the movement of the slide bar 3, it will slide relative to the corresponding T-shaped clamp block 5. Since the two ends of the second spring 28 are respectively fixedly connected to the clamp block 5 and the slide bar 3, the second spring 28 is deformed. During this process, the distance between each bending rod 13 and the corresponding rotating rod 4 is reduced. In the initial state, the elastic force of the second spring 28 is greater than the elastic force of the torsion spring 30, the clamp plate 11 is in a vertical state, the torsion spring 30 is deformed, and the inelastic second pull rope 14 is in a taut state.

[0055] After the distance between each bending rod 13 and the rotating rod 4 is reduced, since one end of each second pull rope 14 is fixedly connected to the corresponding bending rod 13, and the other end is wrapped around the corresponding rotating rod 4 and cannot be completely separated from the rotating rod 4, under the elastic force of the torsion spring 30, the rotating rod 4 and the rectangular plate 29 will rotate relative to each other, and the second pull rope 14 will be wound up. When each splint 11 rotates together with the rotating rod 4, the splint 11 will rotate in the direction away from the workpiece, and the rubber surface of the splint 11 will deform at the same time. After the splint 11 rotates, it will no longer contact the surface of the workpiece below, and the weld will be completely exposed to the outside.

[0056] After the squeezing rod 27 rotates with the rotating rod 4, it will move against the lower surface of the sliding button 31, thereby causing the sliding button 31 and the fixed block 32 to slide relative to each other, that is, the switch of the welding head 10 is turned on, and the welding head 10 automatically starts to work. Since the length of the inelastic first pull rope 25 is sufficient, the first pull rope 25 will continue to be wound up during the subsequent movement of the rotating shaft 21 in the same direction. Under the blocking effect of the sliding button 31, the squeezing rod 27 cannot be rotated. During the subsequent movement of the bending rod 13 toward the rotating rod 4, the second pull rope 14 will be in a relaxed state. During the subsequent rotation of the mounting column 15 and the welding head 10 with the gear ring 18, the weld between the two workpieces can be welded, and there is no need to manually weld the workpieces, and the welding efficiency of the workpieces is high.

[0057] In the initial state, the first exhaust hole 35 and the second exhaust hole 37 are arranged face to face (as shown in the attached figure). Figure 7 , Attachment Figure 8As shown in the figure, when the rotating shaft 21 starts to rotate and reels in the first pull rope 25, the movable plate 16 will move in the direction close to the fixing ring 33, and the sealing plate 22 will slide relative to the fixing ring 33 at the same time. The sealing performance of the sealing plate 22 when connected to the fixing ring 33 is good. After the sealing plate 22 moves, the second exhaust hole 37 will be staggered with the first exhaust hole 35. When the movable plate 16 continues to move in the direction close to the fixing ring 33, the two movable plates 16 will squeeze the two air bags 23 respectively. Only one side surface of each air bag 23 is fixedly connected to the surface of the fixing ring 33, and the other surfaces are not in contact with the fixing ring 33. After the air bag 23 is squeezed, the gas inside it will be discharged from the air outlet to the inside of the compression chamber 36. At this time, the sealing plate 22 seals and blocks the first exhaust hole 35, and the gas will be compressed inside the compression chamber 36. The one-way valve can prevent the gas in the compression chamber 36 from flowing back.

[0058] After the two workpieces are welded, the servo motor drives the rotating shaft 21 to rotate in the opposite direction, and the rotating shaft 21 will unwind the first pull rope 25, the two clamping blocks 5 and the clamping plate 11 will move to the initial position, the extrusion rod 27 will no longer squeeze the sliding button 31, and the welding head 10 will stop working. When the sealing plate 22 moves to the initial position, the servo motor continues to drive the rotating shaft 21 to move in the opposite direction, and the first pull rope 25 continues to unwind and will be in a relaxed state. During this process, the first exhaust hole 35 is always in a facing state with the second exhaust hole 37. During the rotation of the gear ring 18, the inclined tube 9 will be driven to rotate, and the gas inside the compression chamber 36 will pass through the first exhaust hole 35, the second exhaust hole 37, the third exhaust hole 26 and the channel in turn, and finally be discharged through the inclined tube 9. The nozzle of the inclined tube 9 faces the weld. When the inclined tube 9 rotates and the gas is discharged from the nozzle, the circulation speed of the air around the annular weld can be accelerated, which is beneficial to accelerate the cooling at the weld, so as to facilitate the welding of the constant pressure water replenishment vacuum degasser assembly.

[0059] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A welding device for a constant pressure water replenishment vacuum degasser assembly, characterized in that: The invention comprises a base (1) with a hollow structure and a welding head (10), wherein a processing cover (17) and a positioning sleeve (2) are fixedly connected to the upper surface of the base (1), two rotating shafts (21) and a gear ring (18) are rotatably mounted on the base (1), wherein a rotating gear (19) is fixedly connected to one of the rotating shafts (21), and the rotating gear (19) is meshingly connected to the gear ring (18), and an extrusion assembly is arranged on the processing cover (17); Two sliding assemblies are arranged on the base (1), each of the sliding assemblies comprises a moving plate (16) connected to the base (1) via a first spring (20), and the moving plate (16) is connected to the corresponding rotating shaft (21) via a first pull rope (25); A sliding rod (3) is fixedly connected to one side surface of each movable plate (16); one end of the sliding rod (3) passes through the processing cover (17) and is connected to a clamping block (5) via a second spring (28); each clamping block (5) is provided with a rotating assembly, and the rotating assembly includes two rectangular plates (29), a rotating rod (4) and a rubber clamping plate (11); the two rectangular plates (29) are fixedly connected to the lower surface of the clamping block (5); the rotating rod (4) is rotatably connected to the two rectangular plates (29); the clamping plate (11) is fixedly connected to the rotating rod (4); and each sliding rod (3) is provided with a pulling assembly.

2. A welding device for a constant pressure water replenishment vacuum degasser assembly according to claim 1, characterized in that: The extrusion assembly comprises a support rod (7) and an extrusion block (8) having a T-shaped cross section, the upper end of the support rod (7) being fixedly connected to the upper inner wall of the processing cover (17), a return spring being sleeved on the extrusion block (8), one end of the return spring being fixedly connected to the extrusion block (8), the other end of the return spring being fixedly connected to the support rod (7), and a rubber block being fixedly connected to the lower surface of the extrusion block (8).

3. A welding device for a constant pressure water replenishment vacuum degasser assembly according to claim 2, characterized in that: Two symmetrically arranged slide blocks (24) are slidably mounted on the upper inner wall of the processing cover (17), one side of each slide block (24) is hinged with a hinge rod (6), the hinge rod (6) and the extrusion block (8) are hinged, one side surface of each movable plate (16) is fixedly connected with a cross bar (12), and two through holes for connecting the cross bar (12) are provided on the processing cover (17).

4. A welding device for a constant pressure water replenishment vacuum degasser assembly according to claim 1, characterized in that: Each of the pulling assemblies comprises a bending rod (13) fixedly connected to the sliding rod (3); the bending rod (13) is connected to the corresponding rotating rod (4) via a second pull rope (14).

5. A welding device for a constant pressure water replenishment vacuum degasser assembly according to claim 1, characterized in that: A torsion spring (30) is sleeved on each of the rotating rods (4), one end of the torsion spring (30) is fixedly connected to the rotating rod (4), and the other end of the torsion spring (30) is fixedly connected to the corresponding rectangular plate (29).

6. A welding device for a constant pressure water replenishment vacuum degasser assembly according to claim 1, characterized in that: An extrusion rod (27) is fixedly connected to one of the rotating rods (4), a fixing block (32) is fixedly connected to the inner surface of the processing cover (17), and a sliding button (31) is slidably mounted on the lower surface of the fixing block (32).

7. A welding device for a constant pressure water replenishment vacuum degasser assembly according to claim 1, characterized in that: A fixing ring (33) is fixedly mounted on the upper inner wall of the base (1), air bags (23) are fixedly mounted on both sides of the fixing ring (33), each of the air bags (23) is provided with an air outlet and an air inlet, and a one-way valve is provided in the air inlet and the air outlet, and a compression chamber (36) is provided inside the fixing ring (33) and is connected to the two air outlets.

8. A welding device for a constant pressure water replenishment vacuum degasser assembly according to claim 7, characterized in that: The compression chamber (36) is provided with a first exhaust hole (35) on the upper inner wall, a sealing plate (22) is fixedly connected to one side of one of the movable plates (16), two openings for horizontal movement of the sealing plate (22) are provided on the fixed ring (33), a second exhaust hole (37) is provided on the sealing plate (22), a mounting cavity connected to the fixed ring (33) is provided in the gear ring (18), a mounting column (15) is fixedly connected to the upper surface of the gear ring (18), the welding head (10) is fixedly arranged on one end of the mounting column (15), an inclined tube (9) is fixedly connected to the mounting column (15), a channel connected to the inclined tube (9) and the mounting cavity is provided in the mounting column (15), and a third exhaust hole (26) is provided on the upper inner wall of the mounting cavity.

9. A welding device for a constant pressure water replenishment vacuum degasser assembly according to claim 1, characterized in that: The two rotating shafts (21) are both fixedly connected with a transmission wheel, and the two transmission wheels are connected via a transmission belt (34).

10. A method for using the welding device for a constant pressure water replenishment vacuum degasser assembly according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: placing two workpieces to be welded one above the other, and placing the lower workpiece to be welded inside the positioning sleeve (2); S2: The servo motor drives the rotating shaft (21) to rotate slowly in one direction, the gear ring (18) rotates slowly, the two rotating shafts (21) rotate simultaneously, and the two first pull ropes (25) are wound up. When the two clamping blocks (5) are respectively in close contact with the two side surfaces of the upper workpiece to be welded, the two clamping plates (11) are in close contact with the two side surfaces of the two workpieces to be welded at the same time, so that the two workpieces to be welded are completely facing each other, and the misalignment phenomenon can be effectively avoided. The rubber block is in close contact with the upper surface of the upper workpiece to be welded; S3: The servo motor continues to drive the two rotating shafts (21) to continue rotating in the same direction, and the clamping plate (11) will rotate in a direction away from the workpiece. After the clamping plate (11) rotates, it will no longer contact the surface of the workpiece below, and the weld seam will be completely exposed on the outside. Subsequently, the squeezing rod (27) squeezes the sliding button (31), and the welding head (10) works and performs welding processing on the weld seam between the two workpieces; S4: After the welding of the two workpieces is completed, the servo motor drives the rotating shaft (21) to rotate in the opposite direction, and the rotating shaft (21) unwinds the first pull rope (25). When the inclined tube (9) rotates, the gas inside the compression chamber (36) is discharged from the pipe mouth of the inclined tube (9), thereby accelerating the circulation speed of the air around the annular weld.

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