Welding equipment for valve machining

Abstract

The invention belongs to the field of valve machining, and particularly relates to welding equipment for valve machining, the welding equipment comprises a base, the rear side of the base is fixedly connected with a welding module, and the base is provided with a fixing mechanism; the fixing mechanism comprises a telescopic driving assembly, a rotating assembly, a moving assembly and an outer supporting fixing assembly, the telescopic driving assembly is arranged in the base and used for driving the rotating assembly, the moving assembly and the outer supporting fixing assembly to work, and the rotating assembly is arranged on the outer side of the telescopic driving assembly. The rotating assembly is used for driving the moving assemblies and the outer supporting and fixing assembly to rotate, the moving assemblies are arranged on the rotating assembly, the moving assemblies are adaptive to valve cylinders with different lengths, and the outer supporting and fixing assembly is arranged on the moving assemblies; and through the structural design of the fixing mechanism, the function that after the valve barrel is fixed, the valve barrel can be driven to rotate so as to facilitate welding is achieved.

Description

Technical Field

[0001] The invention relates to the field of valve processing, in particular to welding equipment used for valve processing. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters (temperature, pressure, and flow) of the conveying medium. Valves are mainly composed of a valve cylinder and a valve plate assembly that connects the pipeline. During the valve processing, the valve cylinder is first processed, and then the valve plate assembly is welded to the valve cylinder to form a completed valve.

[0003] The existing welding equipment for valve processing can specifically refer to the Chinese invention patent with application number CN202011187886.7, which discloses in detail a processing auxiliary welding equipment for valve production, especially related to the field of valve processing technology, including a workbench, a rotating fixed component, a moving component, a lifting component, a welding component and a chip removal component. The rotating fixed component is provided with two groups, and the two groups of rotating fixed components are symmetrically arranged on the workbench, the moving component is fixedly arranged on one side of the workbench, the lifting component is fixedly arranged on the moving component, the welding component is fixedly arranged at the working end of the lifting component, and the chip removal component is fixedly arranged on the other side of the workbench. The present invention greatly improves the work efficiency, and at the same time guarantees the quality of valve welding, reduces the labor intensity of the staff, saves manpower and material resources, and greatly improves the practicability of the device.

[0004] Although the above-mentioned device can weld a valve cylinder and a valve plate assembly of a single specification, it cannot effectively weld and assemble valve cylinders and valve plate assemblies of different specifications; therefore, a welding device for valve processing is proposed to address the above-mentioned problem. Summary of the invention

[0005] In order to solve the problem that the existing welding equipment for valve processing can weld valve cylinders and valve plate assemblies of a single specification, but cannot effectively weld and assemble valve cylinders and valve plate assemblies of different specifications, the present invention proposes a welding equipment for valve processing.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a welding device for valve processing described in the present invention includes a base, a welding module is fixedly connected to the rear side of the base, and a fixing mechanism is arranged on the base; the fixing mechanism includes a telescopic driving assembly, a rotating assembly, a moving assembly and an external support fixing assembly, the telescopic driving assembly is arranged inside the base, the telescopic driving assembly is used to drive the rotating assembly, the moving assembly and the external support fixing assembly to work, the rotating assembly is arranged on the outside of the telescopic driving assembly, the rotating assembly is used to drive the moving assembly and the external support fixing assembly to rotate, the moving assembly is arranged on the rotating assembly, and two groups of moving assemblies are arranged, the moving assembly is adapted to valve cylinders of different lengths, the external support fixing assembly is arranged on the moving assembly, and the external support fixing assembly is used to adapt to valve cylinders of different diameters.

[0007] Preferably, the telescopic drive assembly includes a cavity, which is opened at the center position of the base, and a servo motor is fixedly connected to the center position of the bottom end of the cavity, and the output shaft at the top of the servo motor is fixedly connected to the driving shaft, and a connecting sleeve is provided on the outer side of the driving shaft, and the two sides of the bottom end of the inner wall of the connecting sleeve are fixedly connected with a first slider, and the first slider is slidably connected to the inside of a first slide groove, and the first slide groove is opened on both sides of the driving shaft. A first spring is also provided at the top of the driving shaft, and the top of the connecting sleeve is fixedly connected to the center position of the bottom end of the toothed disk, and a lower pressure block is fixedly connected to the center position of the top end of the toothed disk, and a placement groove is opened at the top of the lower pressure block.

[0008] Preferably, the top end of the first spring is fixedly connected to the bottom end of the gear disc, and the bottom end of the first spring is fixedly connected to the top end of the driving shaft.

[0009] Preferably, the rotating assembly includes a rotating disk, the bottom end of which is sleeved on the outside of a fixed ring, the fixed ring is fixedly connected to the bottom end of the inner wall of the cavity, and transmission blocks are fixedly connected to both sides of the bottom end of the rotating disk, the transmission blocks cooperate with transmission grooves, and the transmission grooves are opened on the bottom end of the gear disk.

[0010] Preferably, the moving component includes a passive gear, which is meshed with a toothed disk, one side of the passive gear is rotatably connected to the inner wall of the moving groove, and the other side of the passive gear is fixedly connected to a screw rod, and the side of the screw rod away from the passive gear is also rotatably connected to the inner wall of the moving groove, and the moving groove is opened at a position close to both sides of the rotating disk, and the outer side of the screw rod is threadedly connected to a screw sleeve, the top end of the screw sleeve is fixedly connected to the moving plate, and the screw sleeve is U-shaped.

[0011] Preferably, the external support fixing assembly includes a first pulley, the first pulley is sleeved on the outside of the screw rod, the bottom end of the transmission belt is sleeved on the outside of the first pulley, the top end of the transmission belt is sleeved on the outside of the second pulley, the second pulley is fixedly connected to the outside of the connecting shaft, the connecting shaft is rotatably connected to the inner wall of the movable cavity, the movable cavity is opened inside the movable plate, and the bottom end of the movable cavity is connected to the movable groove, the outside of the connecting shaft is also fixedly connected to a driving disk, the driving disk is opened on the side close to the driving gear to provide a storage cavity, the inside of the storage cavity is provided with a second spring, and the inside of the storage cavity The part is also sleeved with a driving block, which is meshed with a driving gear, and the driving gear is fixedly connected to the outside of the bearing shaft, and the bearing shaft is rotatably connected to the inner wall of the movable cavity. A first guide groove is opened near the center of the driving gear, and a driving rod is slidably connected inside the first guide groove. One side of the driving rod is fixedly connected to the connecting block, and the connecting block is slidably connected inside the second guide groove. The second guide groove is opened on the side where the two groups of movable plates are close to each other, and a connecting frame is fixedly connected to the side of the connecting block away from the driving rod, and the side of the connecting frame away from the connecting block is fixedly connected to the expansion base plate.

[0012] Preferably, two groups of second sliders are fixedly connected to the inner wall of the first pulley, and the two groups of second sliders are symmetrically arranged with the axis of the first pulley as the symmetry line. The second sliders are slidably connected to the inside of the second slide groove, and the second slide groove is opened on the outside of the screw.

[0013] Preferably, one side of the second spring is fixedly connected to the driving block, and the other side of the second spring is fixedly connected to the inner wall of the receiving cavity.

[0014] Preferably, a third sliding block is fixedly connected to the outer side of the driving block close to one end of the second spring, and the third sliding block is slidably connected to the inside of a third sliding groove, and the third sliding groove is provided on the inner wall of the storage cavity.

[0015] Preferably, a sliding rod is slidably connected to the expansion base plate, the sliding rod is fixedly connected to the buffer plate, the inner wall of the buffer plate is fixedly connected to the buffer pad, the buffer pad is glued to the outer side of the expansion base plate, and the buffer pad is made of rubber.

[0016] The present invention is beneficial in that: 1. The present invention realizes the function of driving the valve cylinder to rotate after the valve cylinder is fixed to facilitate welding through the structural design of the fixing mechanism, which solves the problem that the existing welding equipment for valve processing can weld a valve cylinder and a valve plate assembly of a single specification, but cannot effectively weld and assemble valve cylinders and valve plate assemblies of different specifications. It can effectively adapt to valve cylinders of different specifications and improve the efficiency of welding between the valve cylinder and the valve plate assembly; 2. The present invention realizes the function of driving the valve cylinder to rotate after the valve cylinder is fixed through the structural design of the telescopic drive component and the rotating component. When the rotating disk is to be rotated to drive the valve cylinder to rotate, it is only necessary to put the counterweight block into the placement groove and press the lower pressing block to rotate the rotating disk, which solves the problem in the prior art that the operator needs to manually rotate the valve cylinder and the valve plate assembly for welding. The manual rotation speed is unstable, and it is easy to cause the accumulation of welding points or welding through, thereby reducing the yield rate; 3. The present invention realizes the function of adapting to valve cylinders of different specifications through the structural design of the combination of the moving component and the external support fixing component. When fixing the valve cylinder, it is only necessary to put one side of the valve cylinder on the outside of the buffer plate and then start the servo motor. The two sets of moving components will move closer to each other and at the same time push the external support fixing component outward, so that the buffer plate and the inner wall of the valve cylinder are tightly fitted, thereby fixing the valve cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of a front cross-sectional three-dimensional structure of the present invention; Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle; Figure 4 For the present invention Figure 2 The enlarged structural diagram at B in the middle; Figure 5 For the present invention Figure 2 The enlarged structural diagram at C in the middle; Figure 6 For the present invention Figure 5The enlarged structural diagram at D in the middle; Figure 7 It is a schematic diagram of a partial three-dimensional structure of the present invention; Figure 8 For the present invention Figure 7 The enlarged structural diagram at E in the middle; Fig. 9 It is a schematic diagram of a first partial explosion structure of the present invention; Fig.10 It is a schematic diagram of a second partial explosion structure of the present invention; Fig.11 It is a schematic diagram of a third partial explosion structure of the present invention.

[0019] In the figure: 1, base; 2, welding module; 31, cavity; 32, servo motor; 33, driving shaft; 34, connecting sleeve; 35, first slider; 36, first slide groove; 37, first spring; 38, toothed disc; 39, lower pressure block; 40, rotating disc; 41, placement groove; 42, fixed ring; 43, transmission block; 44, transmission groove; 45, passive gear; 46, screw; 47, moving groove; 48, screw sleeve; 49, moving plate; 50, first pulley; 51, second slider; 52. Second slide groove; 53. Transmission belt; 54. Second pulley; 55. Connecting shaft; 56. Active cavity; 57. Driving disk; 58. Accommodating cavity; 59. Second spring; 60. Driving block; 61. Third slider; 62. Third slide groove; 63. Driving gear; 64. Load-bearing shaft; 65. First guide groove; 66. Driving rod; 67. Connecting block; 68. Connecting frame; 69. Expansion base plate; 70. Sliding rod; 71. Buffer plate; 72. Buffer pad; 73. Second guide groove. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0021] See also Figure 1-Figure 11As shown, a welding device for valve processing includes a base 1, a welding module 2 is fixedly connected to the rear side of the base 1, and a fixing mechanism is arranged on the base 1; the fixing mechanism includes a telescopic drive component, a rotating component, a moving component and an external support fixing component, the telescopic drive component is arranged inside the base 1, the telescopic drive component is used to drive the rotating component, the moving component and the external support fixing component to work, the rotating component is arranged on the outside of the telescopic drive component, the rotating component is used to drive the moving component and the external support fixing component to rotate, the moving component is arranged on the rotating component, and two groups of moving components are arranged, the moving component is adapted to valve cylinders of different lengths, the external support fixing component is arranged on the moving component, and the external support fixing component is adapted to valve cylinders of different diameters; through the structural design of the fixing mechanism, the function of driving the valve cylinder to rotate after the valve cylinder is fixed to facilitate welding is realized, which solves the problem that the existing welding equipment for valve processing can weld between valve cylinders and valve plate components of a single specification, but cannot effectively weld and assemble valve cylinders and valve plate components of different specifications, can effectively adapt to valve cylinders of different specifications, and improves the efficiency of welding between valve cylinders and valve plate components.

[0022] Furthermore, the telescopic drive assembly includes a cavity 31, which is opened at the center position of the base 1, and a servo motor 32 is fixedly connected to the center position of the bottom end of the cavity 31, and the output shaft of the top end of the servo motor 32 is fixedly connected to the driving shaft 33, and a connecting sleeve 34 is sleeved on the outer side of the driving shaft 33, and the two sides of the bottom end of the inner wall of the connecting sleeve 34 are fixedly connected with a first slider 35, and the first slider 35 is slidably connected to the inside of the first slide groove 36, and the first slide groove 36 is opened on both sides of the driving shaft 33. A first spring 37 is also provided at the top of the driving shaft 33, and the top end of the connecting sleeve 34 is fixedly connected to the center position of the bottom end of the toothed disc 38, and the center position of the top end of the toothed disc 38 is fixedly connected to a lower pressure block 39 , a placement groove 41 is provided at the top of the lower pressing block 39; the top of the first spring 37 is fixedly connected to the bottom end of the toothed disc 38, and the bottom end of the first spring 37 is fixedly connected to the top of the driving shaft 33. The moving assembly includes a passive gear 45, which is meshed with the toothed disc 38. One side of the passive gear 45 is rotatably connected to the inner wall of the moving groove 47, and the other side of the passive gear 45 is fixedly connected to the screw 46. The side of the screw 46 away from the passive gear 45 is also rotatably connected to the inner wall of the moving groove 47. The moving groove 47 is provided at a position close to both sides of the rotating disk 40. The outer side of the screw 46 is threadedly connected with a screw sleeve 48. The top of the screw sleeve 48 is fixedly connected to the moving plate 49, and the screw sleeve 48 is U-shaped.The outer support fixing component includes a first pulley 50, which is sleeved on the outer side of the screw rod 46. When the screw sleeve 48 moves, the inner wall of the screw sleeve 48 pushes the first pulley 50 to move synchronously. The inner wall of the screw sleeve 48 is rotatably connected to both sides of the first pulley 50, so that the second slider 51 fixedly connected on the inner wall of the first pulley 50 slides synchronously inside the second slide groove 52. Through the action of the second slider 51 and the second slide groove 52, the first pulley 50 can rotate synchronously with the rotation of the screw rod 46 and can move synchronously on the outer side of the screw rod 46. The bottom end of the transmission belt 53 is sleeved on the outer side of the first pulley 50, and the top end of the transmission belt 53 is sleeved on the outer side of the second pulley 54. The second pulley 54 is fixedly connected to the outer side of the connecting shaft 55. The connecting shaft 55 is rotatably connected to the inner wall of the active cavity 56. The active cavity 56 is opened in the movable plate 49, and the bottom end of the active cavity 56 is connected to the movable plate 49. The movable grooves 47 are connected, and a driving disk 57 is also fixedly connected to the outer side of the connecting shaft 55. A storage chamber 58 is provided on the side of the driving disk 57 close to the driving gear 63. A second spring 59 is arranged inside the storage chamber 58, and a driving block 60 is also sleeved inside the storage chamber 58. The driving block 60 is meshed with the driving gear 63. The driving gear 63 is fixedly connected to the outer side of the bearing shaft 64. The bearing shaft 64 is rotatably connected to the inner wall of the movable chamber 56. A first guide groove 65 is provided near the center of the driving gear 63. A driving rod 66 is slidably connected inside the first guide groove 65. One side of the driving rod 66 is fixedly connected to the connecting block 67. The connecting block 67 is slidably connected inside the second guide groove 73. The second guide groove 73 is provided on the side where the two groups of movable plates 49 are close to each other. A connecting frame 68 is fixedly connected to the side of the connecting block 67 away from the driving rod 66. The side of the connecting frame 68 away from the connecting block 67 is fixedly connected to the expansion base plate 69. During operation, when the valve cylinder is to be fixed, the servo motor 32 is started to drive the driving shaft 33 to rotate. When the driving shaft 33 rotates, it drives the connecting sleeve 34 to rotate synchronously through the first slider 35 and the first slide groove 36. The rotation of the connecting sleeve 34 drives the gear plate 38 to rotate synchronously. The rotation of the gear plate 38 drives the meshing driven gear 45 to rotate. The rotation of the driven gear 45 drives the fixedly connected screw 46 to rotate synchronously. When the screw 46 rotates, the screw sleeve 48 threadedly connected to the outside thereof drives the moving plate 49 to move with the rotation of the screw 46, so that the expansion base plate 69 and the buffer plate 71 are deeply inserted into the two sides of the valve cylinder. At the same time, when the screw 46 rotates, the first pulley 50 is rotated synchronously through the second slider 51 and the second slide groove 52, and It can move synchronously on the outside of the screw rod 46 with the movement of the screw sleeve 48 and the movable plate 49. When the first pulley 50 rotates, it drives the second pulley 54 to rotate synchronously through the transmission belt 53. The rotation of the second pulley 54 drives the fixedly connected connecting shaft 55 to rotate synchronously, so that the driving disk 57 fixedly connected to the outside of the connecting shaft 55 also rotates synchronously with the rotation of the connecting shaft 55. When the driving disk 57 rotates, it drives the driving gear 63 to rotate through the driving block 60. When the driving gear 63 rotates, it drives the driving rod 66 and the connecting block 67 to move through the bearing shaft 64 provided thereon, so that the driving rod 66 and the connecting block 67 drive the expansion base plate 69 to expand outward through the connecting frame 68, and the valve cylinder is fixed by the friction force. During the downward movement of the toothed disc 38, the connecting sleeve 34 fixedly connected to the toothed disc 38 also moves downward with the movement of the toothed disc 38, and drives the fixedly connected first slider 35 to slide inside the first slide groove 36. The combination of the first slider 35 and the first slide groove 36 has the effect of limiting the movement distance of the connecting sleeve 34. At the same time, the first slider 35 and the first slide groove 36 can also enable the active shaft 33 to drive the connecting sleeve 34 and the toothed disc 38 to rotate. During the downward movement of the toothed disc 38, the first spring 37 is squeezed, causing the first spring 37 to produce elastic deformation. When the counterweight block inside the placement groove 41 is removed, the toothed disc 38 will automatically return to its original position under the action of the restoring force of the first spring 37, and return to the state of meshing with the driven gear 45.

[0023] Further, the rotating assembly includes a rotating disk 40, the bottom end of which is sleeved on the outside of a fixing ring 42, the fixing ring 42 is fixedly connected to the bottom end of the inner wall of the cavity 31, and transmission blocks 43 are fixedly connected to both sides of the bottom end of the rotating disk 40, the transmission blocks 43 are matched with transmission grooves 44, and the transmission grooves 44 are provided on the bottom end of the toothed disk 38; During operation, after the valve cylinder is fixed, it is necessary to rotate the valve cylinder for welding. It is only necessary to put the counterweight block into the placement groove 41. At this time, the lower pressing block 39 moves downward under the action of the gravity of the counterweight block, and drives the toothed disc 38 to move downward synchronously, so that the toothed disc 38 is released from the meshing state with the passive gear 45. At this time, the toothed disc 38 can no longer rotate to drive the moving component to move the outer support fixed component to expand outward. During the downward movement of the toothed disc 38, the transmission block 43 fixedly connected to the inner wall of the rotating disc 40 is inserted into the transmission groove 44. At this time, when the toothed disc 38 rotates, the rotating disc 40 is driven to rotate through the transmission block 43 and the transmission groove 44, so that the moving component and the outer support fixed component set on the rotating disc 40 rotate synchronously, so that the valve cylinder fixed on the outer support fixed component rotates synchronously, and the valve cylinder and the valve plate assembly are welded through the welding module 2 during the rotation. The technology adopted by the welding module 2 is the existing technology, which can be adjusted to a certain degree of telescopic and lifting by an electric push rod.

[0024] Furthermore, two groups of second sliders 51 are fixedly connected to the inner wall of the first pulley 50, and the two groups of second sliders 51 are symmetrically arranged with the axis of the first pulley 50 as the symmetry line. The second sliders 51 are slidably connected to the inside of the second slide groove 52, and the second slide groove 52 is opened on the outside of the screw 46; one side of the second spring 59 is fixedly connected to the driving block 60, and the other side of the second spring 59 is fixedly connected to the inner wall of the storage chamber 58.

[0025] Furthermore, a third slider 61 is fixedly connected to the outer side of the driving block 60 near one end of the second spring 59. The third slider 61 is slidably connected to the inside of a third slide groove 62. The third slide groove 62 is provided on the inner wall of the receiving cavity 58. During operation, when the driving block 60 moves toward the inside of the storage chamber 58 under the action of the reaction force, the driving block 60 squeezes the second spring 59 to cause the second spring 59 to produce elastic deformation, and at the same time, the third slider 61 fixedly connected to the driving block 60 slides inside the third slide groove 62. The third slider 61 and the third slide groove 62 limit the moving distance of the driving block 60, thereby preventing the driving block 60 from moving excessively and escaping from the inside of the storage chamber 58 under the action of the restoring force of the second spring 59. When the driving block 60 is no longer affected by the reaction force, the driving block 60 will automatically return to its original position under the action of the restoring force of the second spring 59, and return to the state of meshing with the driving gear 63. Example

[0026] See also Figure 2-Figure 9As shown, comparative example 1 is another embodiment of the present invention, a sliding rod 70 is slidably connected to the expansion base plate 69, the sliding rod 70 is fixedly connected to the buffer plate 71, the inner wall of the buffer plate 71 is fixedly connected to the buffer pad 72, the buffer pad 72 is glued to the outer side of the expansion base plate 69, and the buffer pad 72 is made of rubber. After the buffer plate 71 and the inner wall of the valve cylinder are completely fitted, if the expansion base plate 69 continues to expand outward, the buffer plate 71 will be squeezed, so that the buffer plate 71 squeezes the buffer pad 72 under the action of the squeezing force, so that the buffer pad 72 made of rubber material will be Elastic deformation can disperse and buffer the excessive extrusion force through the action of the buffer pad 72. At this time, if the expansion substrate 69 continues to expand outward, it will encounter greater resistance. The resistance will be transmitted to the drive block 60 through the drive gear 63. Since the end of the drive block 60 adopts an arc-shaped design, when the resistance is too large, it will move toward the inside of the storage cavity 58 under the action of the arc-shaped design to release the meshing state with the drive gear 63, thereby avoiding the expansion substrate 69 from over-expanding the valve cylinder to generate excessive extrusion pressure and damage the valve cylinder.

[0027] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A welding device for valve processing, comprising a base (1), characterized in that: A welding module (2) is fixedly connected to the rear side of the base (1), and a fixing mechanism is provided on the base (1); The fixing mechanism comprises a telescopic drive component, a rotating component, a moving component and an external support fixing component. The telescopic drive component is arranged inside the base (1), and is used to drive the rotating component, the moving component and the external support fixing component to work. The rotating component is arranged outside the telescopic drive component, and is used to drive the moving component and the external support fixing component to rotate. The moving component is arranged on the rotating component, and two groups of moving components are arranged. The moving component is adapted to valve cylinders of different lengths. The external support fixing component is arranged on the moving component, and the external support fixing component is adapted to valve cylinders of different diameters.

2. A welding device for valve processing according to claim 1, characterized in that: The telescopic drive assembly comprises a cavity (31), the cavity (31) is opened at the center position of the base (1), a servo motor (32) is fixedly connected at the center position of the bottom end of the cavity (31), the output shaft at the top end of the servo motor (32) is fixedly connected to the driving shaft (33), a connecting sleeve (34) is sleeved on the outer side of the driving shaft (33), first sliders (35) are fixedly connected on both sides of the bottom end of the inner wall of the connecting sleeve (34), the first sliders (35) are slidably connected to the inside of a first slide groove (36), the first slide groove (36) is opened on both sides of the driving shaft (33), a first spring (37) is also provided at the top end of the driving shaft (33), the top end of the connecting sleeve (34) is fixedly connected to the center position of the bottom end of the toothed disc (38), a lower pressing block (39) is fixedly connected at the center position of the top end of the toothed disc (38), and a placement groove (41) is opened at the top end of the lower pressing block (39).

3. A welding device for valve processing according to claim 2, characterized in that: The top end of the first spring (37) is fixedly connected to the bottom end of the toothed disc (38), and the bottom end of the first spring (37) is fixedly connected to the top end of the driving shaft (33).

4. A welding device for valve processing according to claim 1, characterized in that: The rotating assembly comprises a rotating disk (40), the bottom end of the rotating disk (40) being sleeved on the outside of a fixing ring (42), the fixing ring (42) being fixedly connected to the bottom end of the inner wall of the cavity (31), and transmission blocks (43) being fixedly connected to both sides of the bottom end of the rotating disk (40), the transmission blocks (43) being matched with transmission grooves (44), and the transmission grooves (44) being arranged on the bottom end of the toothed disk (38).

5. The welding equipment for valve processing according to claim 1, characterized in that: The moving assembly comprises a passive gear (45), the passive gear (45) meshing with the toothed disc (38), one side of the passive gear (45) being rotatably connected to the inner wall of the moving groove (47), and the other side of the passive gear (45) being fixedly connected to the screw rod (46), and the side of the screw rod (46) away from the passive gear (45) being also rotatably connected to the inner wall of the moving groove (47), the moving groove (47) being arranged at positions close to both sides of the rotating disc (40), the outer side of the screw rod (46) being threadedly connected to a screw sleeve (48), the top end of the screw sleeve (48) being fixedly connected to the moving plate (49), and the screw sleeve (48) being of U-shaped design.

6. The welding equipment for valve processing according to claim 1, characterized in that: The external support fixing assembly comprises a first pulley (50), the first pulley (50) is sleeved on the outside of the screw rod (46), the bottom end of the transmission belt (53) is sleeved on the outside of the first pulley (50), the top end of the transmission belt (53) is sleeved on the outside of the second pulley (54), the second pulley (54) is fixedly connected to the outside of the connecting shaft (55), the connecting shaft (55) is rotatably connected to the inner wall of the movable cavity (56), the movable cavity (56) is opened inside the movable plate (49), and the bottom end of the movable cavity (56) is connected to the movable groove (47), the outside of the connecting shaft (55) is also fixedly connected to a driving disk (57), a side of the driving disk (57) close to the driving gear (63) is provided with a receiving cavity (58), the inside of the receiving cavity (58) is provided with a second spring (59), and the inside of the receiving cavity (58) is also provided with a second spring (59). A driving block (60) is sleeved, the driving block (60) meshing with a driving gear (63), the driving gear (63) being fixedly connected to the outer side of a bearing shaft (64), the bearing shaft (64) being rotatably connected to the inner wall of the movable chamber (56), a first guide groove (65) being provided at a position close to the center of the driving gear (63), a driving rod (66) being slidably connected inside the first guide groove (65), one side of the driving rod (66) being fixedly connected to a connecting block (67), the connecting block (67) being slidably connected inside a second guide groove (73), the second guide groove (73) being provided on a side where the two groups of movable plates (49) are close to each other, a connecting frame (68) being fixedly connected on a side of the connecting block (67) away from the driving rod (66), and a side of the connecting frame (68) being fixedly connected to the expansion base plate (69).

7. A welding device for valve processing according to claim 6, characterized in that: Two groups of second sliding blocks (51) are fixedly connected to the inner wall of the first pulley (50), and the two groups of second sliding blocks (51) are symmetrically arranged with the axis of the first pulley (50) as the symmetry line. The second sliding blocks (51) are slidably connected to the inside of the second sliding groove (52), and the second sliding groove (52) is opened on the outside of the screw rod (46).

8. The welding equipment for valve processing according to claim 6, characterized in that: One side of the second spring (59) is fixedly connected to the driving block (60), and the other side of the second spring (59) is fixedly connected to the inner wall of the storage cavity (58).

9. The welding equipment for valve processing according to claim 6, characterized in that: A third sliding block (61) is fixedly connected to the outer side of the driving block (60) near one end of the second spring (59), and the third sliding block (61) is slidably connected to the inside of a third sliding groove (62), and the third sliding groove (62) is formed on the inner wall of the storage cavity (58).

10. The welding equipment for valve processing according to claim 6, characterized in that: A sliding rod (70) is slidably connected to the expansion base plate (69), the sliding rod (70) is fixedly connected to the buffer plate (71), the inner wall of the buffer plate (71) is fixedly connected to the buffer pad (72), the buffer pad (72) is glued to the outer side of the expansion base plate (69), and the buffer pad (72) is made of rubber.

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