A welding device for valve production

Abstract

The application discloses a welding device for valve production and particularly relates to the technical field of valve production, which comprises a shell, universal wheels are fixedly connected to the lower end of the shell, a control panel is fixedly installed at the right part of the front end of the shell, an operating door is rotatably connected to the left part of the front end of the shell, a partition plate is fixedly connected to the inner surface of the shell, and the inner surface of the shell is provided with an arc welding assembly and an auxiliary assembly. The welding device for valve production can make the welding head move back and forth in the process of the rotation of the three-way valve, accurately cover the four connected arc joints on the outer surface of the three-way valve, automatically match the arc joint track and the movement track of the welding head in three-dimensional space, effectively control the arc joint welding path, and avoid uneven welding, local overheating or welding defects.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valve production, in particular to a welding device for valve production. BACKGROUND

[0002] Three-way valves belong to a type of valve, and are used to control the flow direction of fluid. They usually have three connection ports and can switch or distribute fluid. They are widely used in pipeline systems to change the flow direction of fluid or distribute different flow rates. Therefore, like other types of valves, three-way valves are mainly used to regulate, control, or shut off the flow of fluid in pipelines.

[0003] Three-way valve outer surface joint welding technology is mainly used to ensure the sealing and strength of the connection parts of the valve body, preventing fluid leakage. Since three-way valves usually need to withstand high pressure and temperature, welding can effectively improve the structural stability of the connection, ensuring that the valve does not loosen or break during operation. In addition, the welding process can make the connection more secure, avoiding leakage problems that may occur with traditional connection methods, thereby improving the safety and service life of the valve. Therefore, welding not only ensures the sealing of the valve, but also enhances its durability and reliability.

[0004] Chinese Patent No. CN214212664U discloses a welding device for valve production, which includes a base, a welding support column fixedly installed on the top of the base, a top plate fixedly installed on the top of the welding support column, a linear module fixedly installed on the bottom of the top plate, an electric push rod fixedly installed on the bottom of the linear module, a welding device body fixedly installed on the bottom of the electric push rod, a support fixedly installed on the left side of the welding support column on the top of the base, and a motor fixedly installed on the top of the support. The welding device for valve production has a linear module on the electric push rod, which allows the welding device body to move left and right during welding. It can adjust the welding device body according to the user's needs during use, achieving the purpose of automatically and stably welding the valve, reducing labor costs, and improving welding efficiency. However, the above-mentioned patent document still has the following defects in the implementation process:

[0005] Although the above-mentioned patent can realize the left and right movement of the welding device body during welding, it cannot weld the four arc-shaped joints on the outer surface of the three-way valve. Manual welding method is difficult to accurately cover the four arc-shaped joints on the outer surface of the three-way valve, and it is difficult to control the welding path of the arc-shaped joints. At the same time, it is difficult to match the three-dimensional space of the arc-shaped joint trajectory and the welding head motion trajectory, resulting in uneven welding, easy local overheating or welding defects. SUMMARY

[0006] The main purpose of the present application is to provide a welding device for valve production, which can effectively solve the problems of difficult control of manual welding track, insufficient matching precision of three-dimensional motion track of welding head and arc-shaped joint space, uneven welding, easy local overheating and welding defects of four connected arc-shaped joints on the outer surface of a tee valve.

[0007] To achieve the above purpose, the technical scheme adopted by the present application is as follows: a welding device for valve production, comprising a shell, universal wheels are fixedly connected to the lower end of the four corners of the shell, a control panel is fixedly installed on the right front end of the shell, an operating door is rotatably connected to the left front end of the shell, a partition plate is fixedly connected to the inner surface of the shell, and an arc welding assembly and an auxiliary assembly are arranged on the inner surface of the shell.

[0008] Preferably, the arc welding assembly comprises a hollow frame fixedly connected to the inner surface of the partition plate, a welding mechanism is arranged on the inner surface of the hollow frame, and a reciprocating extrusion mechanism is arranged on the outer surface of the welding mechanism and the outer surface of the hollow frame.

[0009] Preferably, the welding mechanism comprises a circular groove rod rotatably connected to the inner surface of the hollow frame in the horizontal direction, a circular rod rotatably connected to the inner surface of the hollow frame in the vertical direction, a transmission mechanism one fixedly connected to the upper end of the circular rod and the right end of the circular groove rod, a transmission mechanism two fixedly connected to the lower end of the circular rod, a fixed frame fixedly connected to the outer surface of the hollow frame, a sliding rod slidingly connected to the inner surface of the fixed frame, and a welding head fixedly installed on the inner surface of the sliding rod.

[0010] Preferably, the reciprocating extrusion mechanism comprises an extrusion arc surface block fixedly connected to the outer surface of the circular groove rod, a fixed block slidingly connected to the fixed frame and fixedly connected to the outer surface of the sliding rod, and a spring one sleeved on the outer surface of the sliding rod and fixedly connected to the fixed block and the fixed frame at both ends.

[0011] Preferably, the auxiliary assembly comprises an air cylinder fixedly connected to the right inner surface of the shell, a pushing mechanism arranged on the left end of the air cylinder, a lifting mechanism arranged on the inner surface of the partition plate, a fixing mechanism arranged on the inner surface of the pushing mechanism, a hydraulic mechanism arranged on the lower part of the inner surface of the shell, and an insertion mechanism arranged on the inner surface of the circular groove rod.

[0012] Preferably, the pushing mechanism comprises a circular groove block slidingly connected to the inner surface of the air cylinder and the inner surface of the shell, a fixed ring fixedly connected to the outer surface of the air cylinder, a rotating ring rotatably connected to the inner surface of the circular groove block, and a spring two sleeved on the outer surface of the air cylinder and fixedly connected to one end of the fixed ring and one end of the circular groove block at both ends.

[0013] Preferably, the lifting mechanism comprises a rectangular rod fixedly connected with the inner surface of the partition plate, a lifting rod slidingly connected with the inner surface of the rectangular rod, a positioning block fixedly connected with the upper end of the lifting rod, and a spring three sleeved with the outer surface of the lifting rod and fixedly connected with the lower part of the inner surface of the rectangular rod and one end of the lifting rod.

[0014] Preferably, the fixing mechanism comprises a circular ring fixedly connected with the upper end of the partition plate, two connection blocks fixedly connected with the outer surface of the rotating ring and symmetrically arranged on the front and back of the rotating ring, two extrusion rods slidingly connected with the inner surface of the connection blocks and slidingly connected with the rotating ring, two taper blocks one fixedly connected with the ends of the two extrusion rods which are close to each other, two springs four sleeved with the outer surfaces of the two extrusion rods and fixedly connected with the inner surface of the connection block and the rotating ring, and a plurality of arc blocks slidingly connected with the inner surface of the circular ring and arranged at equal distances in a ring shape.

[0015] Preferably, the hydraulic mechanism comprises a placing box fixedly connected with the lower part of the inner surface of the shell, a rectangular plate fixedly connected with the inner surface of the placing box, a push rod slidingly connected with the placing box and the rectangular plate and fixedly connected with the rear part of the left end of the Z-shaped plate, a spring five fixedly connected with the left end of the push rod, a push plate slidingly connected with the placing box and the push rod and fixedly connected with the front end of the spring five, and the inner surface of the rectangular plate is connected in communication with the inner surface of the circular ring through a hard pipeline and connected in communication with the inner surface of the circular groove rod through a hard pipeline.

[0016] Preferably, the inserting mechanism comprises a piston rod slidingly connected with the inner surface of the circular groove rod, a taper block two fixedly connected with the right end of the piston rod, and a rubber block fixedly connected with the outer surface of the taper block two.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] 1、In the present application, through the mutual cooperation of the welding mechanism and the reciprocating extrusion mechanism, the welding head can move back and forth during the rotation of the three-way valve, accurately cover the four connected arc seams on the outer surface of the three-way valve, automatically match the arc seam trajectory and the welding head movement trajectory in three-dimensional space, effectively control the arc seam welding path, and thereby avoid uneven welding, local overheating or welding defects.

[0019] 2. In this invention, by setting up a fixing mechanism, a hydraulic mechanism and an insertion mechanism, the three-way valve is firmly fixed in the set position by the precise injection and gradual advancement of hydraulic oil, ensuring the stability and accuracy of welding. With the uniform distribution of pressure in the inner cavity of the annulus, the positions of the three holes of the three-way valve are effectively fixed, avoiding poor welding caused by vibration or deviation, thereby improving the welding quality and ensuring the uniformity and reliability of the joint welding.

[0020] 3. In this invention, by setting up a lifting mechanism, the three-way valve can automatically move to the welding position under the action of the lifting rod 635. The three-way valve can be stably positioned at the welding position, which makes the welding process highly accurate and consistent. The automated adjustment and movement mode effectively avoids positioning errors, ensures the uniformity and reliability of the joint during welding, thereby improving the welding quality and reducing potential welding defects. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the arc welding assembly and auxiliary assembly structure of the present invention;

[0024] Figure 4 This is a schematic cross-sectional view of the rotating mechanism of the present invention;

[0025] Figure 5 This is a schematic diagram of the reciprocating extrusion mechanism of the present invention;

[0026] Figure 6 This is a schematic diagram of the explosion effect of the propulsion mechanism of the present invention;

[0027] Figure 7 This is a schematic cross-sectional view of the lifting mechanism of the present invention;

[0028] Figure 8 This is a schematic cross-sectional view of the fixing mechanism of the present invention;

[0029] Figure 9 This is a schematic cross-sectional view of the hydraulic mechanism of the present invention;

[0030] Figure 10 For the present invention Figure 4 A magnified structural diagram of point A in the middle.

[0031] In the diagram: 1. Outer shell; 2. Casters; 3. Control panel; 4. Operating door; 5. Arc welding assembly; 51. Hollow frame; 52. Welding mechanism; 521. Round rod; 522. Transmission mechanism one; 523. Grooved rod; 524. Transmission mechanism two; 525. Fixed frame; 526. Slide rod; 527. Welding head; 53. Reciprocating extrusion mechanism; 531. Extrusion arc block; 532. Fixed block; 533. Spring one; 6. Auxiliary components; 61. Cylinder; 62. Pushing mechanism; 621. Grooved block; 622. Fixed ring; 623. Rotating ring; 624. Spring two; 63. Lifting mechanism; 631, slider rod; 632, Z-shaped plate; 633, convex block; 634, rectangular rod; 635, lifting rod; 636, positioning block; 637, spring three; 64, fixing mechanism; 641, ring; 642, connecting block; 643, extrusion rod; 644, conical block one; 645, spring four; 646, arc block; 65, hydraulic mechanism; 651, rectangular plate; 652, push rod; 653, push plate; 654, spring five; 655, placement box; 66, insertion mechanism; 661, piston rod; 662, conical block two; 663, rubber block; 7, partition plate. Detailed Implementation

[0032] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0033] Example 1, as Figure 1 and Figure 2 As shown, a welding device for valve production includes a housing 1, with casters 2 fixedly connected to the four corners of the lower end of the housing 1, a control panel 3 fixedly installed on the right front end of the housing 1, an operating door 4 rotatably connected to the left front end of the housing 1, a partition 7 fixedly connected to the inner surface of the housing 1, and an arc welding assembly 5 and an auxiliary assembly 6 provided on the inner surface of the housing 1.

[0034] In this embodiment, the three-way valve is placed on the auxiliary component 6. Then, by operating the control panel 3, the auxiliary component 6 raises the position of the three-way valve. After raising, the three holes of the three-way valve are positioned and clamped by hydraulic means. After positioning, the three-way valve is rotated one revolution. During the rotation, the arc welding component 5 performs arc welding on the arc joint of the outer surface of the three-way valve.

[0035] The control panel 3 mentioned above is a mature control technology and device in the existing technology. In this solution, we will use its controllable functions, and its internal structure, principle and connection method will not be described.

[0036] Specifically, to achieve the positioning and rotation welding of the three-way valve, refer to... Figure 3 ,Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 In this embodiment, the auxiliary component 6 includes a cylinder 61 fixedly connected to the right side of the inner surface of the outer shell 1, a pushing mechanism 62 is provided at the left end of the cylinder 61, a lifting mechanism 63 is provided on the inner surface of the partition 7, a fixing mechanism 64 is provided on the inner surface of the pushing mechanism 62, a hydraulic mechanism 65 is provided at the lower part of the inner surface of the outer shell 1, and an insertion mechanism 66 is provided on the inner surface of the circular groove rod 523.

[0037] For further details, please refer to [link / reference]. Figure 3 and Figure 7 In this embodiment, the lifting mechanism 63 includes a rectangular rod 634 fixedly connected to the inner surface of the partition 7. A lifting rod 635 is slidably connected to the inner surface of the rectangular rod 634. A positioning block 636 is fixedly connected to the upper end of the lifting rod 635. A spring 637 is sleeved on the outer surface of the lifting rod 635. The two ends of the spring 637 are fixedly connected to the lower part of the inner surface of the rectangular rod 634 and one end of the lifting rod 635, respectively. A slider rod 631 is fixedly connected to the outer surface of the cylinder 61. A Z-shaped plate 632 is fixedly connected to the left end of the slider rod 631. A convex block 633 is fixedly connected to the front part of the left end of the Z-shaped plate 632. The convex block 633 is fixedly connected to the transmission mechanism 524.

[0038] For further details, please refer to [link / reference]. Figure 3 and Figure 6 In this embodiment, the pushing mechanism 62 includes a circular groove block 621 that is slidably connected to the inner surface of the cylinder 61 and the inner surface of the outer shell 1. A fixing ring 622 is fixedly connected to the outer surface of the cylinder 61. A rotating ring 623 is rotatably connected to the inner surface of the circular groove block 621. A second spring 624 is sleeved on the outer surface of the cylinder 61. The two ends of the second spring 624 are fixedly connected to one end of the fixing ring 622 and one end of the circular groove block 621, respectively.

[0039] During implementation, the three-way valve is placed on the inner surface of the positioning block 636. Then, the cylinder 61 is activated to push the circular groove block 621. When the circular groove block 621 reaches the leftmost position on the inner surface of the outer casing 1, it can no longer slide. However, the cylinder 61 can still continue to push to the left, causing the spring 624 to be compressed. As the cylinder 61 continues to push to the left, it drives the Z-shaped plate 632 on the slider rod 631 to move to the left, allowing the left inclined surface of the convex block 633 to move to below the roller at the lower end of the lifting rod 635, thus allowing the roller to... The roller is squeezed and pushes the positioning block 636 on the lifting rod 635 upward. The spring 637 is in a compressed state. When the roller on the lifting rod 635 moves to the horizontal position of the convex block 633, the lifting rod 635 moves the three-way valve to the set height position, so that the three-way valve can automatically move to the welding position. The three-way valve can be stably positioned in the welding position, which makes the welding process highly accurate and consistent. The automated adjustment and movement mode effectively avoids positioning errors, ensures the uniformity and reliability of the joint during welding, thereby improving the welding quality and reducing potential welding defects.

[0040] For further details, please refer to [link / reference]. Figure 3 and Figure 9 In this embodiment, the hydraulic mechanism 65 includes a placement box 655 fixedly connected to the lower part of the inner surface of the outer shell 1. A rectangular plate 651 is fixedly connected to the inner surface of the placement box 655. A push rod 652, which is slidably connected to the placement box 655 and the rectangular plate 651, is fixedly connected to the rear left end of the Z-shaped plate 632. A spring 654 is fixedly connected to the left end of the push rod 652. A push plate 653, which is slidably connected to the placement box 655 and the push rod 652, is fixedly connected to the front end of the spring 654. The inner surface of the rectangular plate 651 is connected to the inner surface of the ring 641 through a rigid pipe. The inner surface of the rectangular plate 651 is also connected to the inner surface of the circular groove rod 523 through a rigid pipe.

[0041] For further details, please refer to [link / reference]. Figure 3 and Figure 8 In this embodiment, the fixing mechanism 64 includes a ring 641 fixedly connected to the upper end of the partition 7. Connecting blocks 642 are symmetrically fixedly connected to the outer surface of the rotating ring 623. The inner surfaces of the two connecting blocks 642 are slidably connected to the pressing rods 643 that are slidably connected to the rotating ring 623. The ends of the two pressing rods 643 that are close to each other are fixedly connected to a conical block 644. The outer surfaces of the two pressing rods 643 are fitted with springs 645. The two ends of the two springs 645 are fixedly connected to the inner surface of the connecting block 642 and the rotating ring 623 respectively. A number of arc blocks 646 are slidably connected to the inner surface of the ring 641 at equal intervals.

[0042] During implementation, when the three-way valve moves to the set height, the two pressing rods 643 on the rotating ring 623 are in the inner cavity of the circular ring 641, and the Z-shaped plate 632 pushes the push rod 652 to slide on the inner surface of the placement box 655 and the rectangular plate 651. This causes the push plate 653 to slide on the inner surface of the placement box 655 under the action of the spring 654, allowing the hydraulic oil in the inner cavity of the placement box 655 to enter the inner surface of the circular ring 641 through a rigid pipe. When the inner cavity of the circular ring 641 is filled with hydraulic oil, it will gradually push several arc-shaped blocks 646 to move closer together, making the diameter of the circular ring 641 smaller. At this time, the rollers on the pressing rods 643... The ball is squeezed by the arc-shaped block 646, causing the two extrusion rods 643 to move closer together. The spring 645 is in a compressed state, and the two conical blocks 644 can be inserted into the two corresponding round holes of the three-way valve to fix the front and rear positions of the three-way valve. Through the precise injection and gradual advancement of hydraulic oil, the three-way valve is firmly fixed in the set position, ensuring the stability and accuracy of welding. With the uniform distribution of pressure in the inner cavity of the ring 641, the front and rear positions of the three-way valve are effectively fixed, avoiding welding defects caused by vibration or deviation, thereby improving welding quality and ensuring the uniformity and reliability of the joint welding.

[0043] For further details, please refer to [link / reference]. Figure 10 In this embodiment, the insertion mechanism 66 includes a piston rod 661 that is slidably connected to the inner surface of the circular groove rod 523. A conical block 662 is fixedly connected to the right end of the piston rod 661, and a rubber block 663 is fixedly connected to the outer surface of the conical block 662.

[0044] During implementation, as the push plate 653 pushes the placement box 655, it will deliver hydraulic oil into the inner cavity of the circular groove rod 523 through a rigid pipe. Under the action of hydraulic pressure, the conical block 662 on the piston rod 661 is pushed into the circular hole on the left side of the three-way valve. The rubber block 663 is tightly attached to the inner surface of the three-way valve, and together with the fixing mechanism 64, the three-way valve is fully clamped and positioned.

[0045] It should be noted that the rigid pipe connected to the grooved rod 523 is rotatably connected to the grooved rod 523.

[0046] Example 2: This example adds an arc-shaped welding process to the outer surface joint of the three-way valve, based on Example 1, thereby achieving the purpose of arc-shaped welding at the outer surface joint of the three-way valve.

[0047] Specifically, for the arc welding assembly 5, which allows for arc welding of the outer surface joints of a three-way valve, see [reference needed]. Figure 3 , Figure 4 and Figure 5In this embodiment, the arc welding assembly 5 includes a hollow frame 51 fixedly connected to the inner surface of the partition 7, a welding mechanism 52 provided on the inner surface of the hollow frame 51, and a reciprocating extrusion mechanism 53 provided on the outer surface of the welding mechanism 52 and the outer surface of the hollow frame 51.

[0048] For further details, please refer to [link / reference]. Figure 3 , Figure 4 and Figure 5 In this embodiment, the welding mechanism 52 includes a grooved rod 523 rotatably connected to the inner surface of the hollow frame 51 in the horizontal direction, a round rod 521 rotatably connected to the inner surface of the hollow frame 51 in the vertical direction, a transmission mechanism 522 fixedly connected to the upper end of the round rod 521 and the right end of the grooved rod 523, a transmission mechanism 524 fixedly connected to the lower end of the round rod 521, a fixed frame 525 fixedly connected to the outer surface of the hollow frame 51, a sliding rod 526 slidably connected to the inner surface of the fixed frame 525, and a welding head 527 fixedly installed on the inner surface of the sliding rod 526.

[0049] During implementation, cylinder 61 will continue to move to the left. At this time, push plate 653 is in close contact with the right end of rectangular plate 651, spring 654 is in a compressed state, and at the same time, the roller at the lower end of lifting rod 635 moves to the horizontal surface to the right of convex block 633, and positioning block 636 has already moved away from the three-way valve.

[0050] Secondly, the transmission mechanism 524 on the convex block 633 meshes with the transmission mechanism at the lower end of the round rod 521, causing the round rod 521 to rotate. Under the transmission action of the transmission mechanism 522, the round groove rod 523 rotates, which in turn drives the three-way valve to rotate through the rubber block 663 on the conical block 662 under the action of friction. At the same time, the ball bearings on the extrusion rod 643 passively rotate on the outer surface of the arc block 646. The three-way valve can maintain stable rotation and position adjustment during the welding process, making the weld joint uniform and consistent. The friction of the rubber block 663 helps the three-way valve rotate accurately, while avoiding any positional deviation or vibration, improving welding accuracy, improving the quality of the joint during the welding process, and reducing potential welding defects.

[0051] The aforementioned transmission mechanism 522 consists of two bevel gears as described in the prior art.

[0052] The aforementioned transmission mechanism 524 is composed of a gear and rack in the prior art, and the rack is connected to the left end of the convex block 633, while the gear is connected to the lower end of the round rod 521.

[0053] It should be noted that the cooperation between transmission mechanism 1 522 and transmission mechanism 2 524 in this scheme is sufficient to drive the circular groove rod 523 to rotate one revolution on the inner surface of the hollow frame 51.

[0054] For further details, please refer to [link / reference].Figure 3 and Figure 5 In this embodiment, the reciprocating extrusion mechanism 53 includes an extrusion arc surface block 531 fixedly connected to the outer surface of the circular groove rod 523, a fixing block 532 fixedly connected to the outer surface of the slide rod 526 and slidably connected to the fixing frame 525, and a spring 533 sleeved on the outer surface of the slide rod 526, with the two ends of the spring 533 fixedly connected to the fixing block 532 and the fixing frame 525 respectively.

[0055] During implementation, the rotating circular groove rod 523 drives the extrusion arc block 531 to rotate. As the extrusion arc block 531 rotates, it gradually presses the slide rod 526 against the inner surface of the fixed frame 525 through its four large arc surfaces, causing the spring 533 to be compressed. This allows the welding head 527 to reciprocate four times, coordinating with the rotation of the three-way valve to weld the four interconnected arc-shaped seams on the outer surface of the three-way valve. The reciprocating motion of the welding head 527, combined with the rotation of the three-way valve, ensures precise coverage of the four interconnected arc-shaped seams on the outer surface of the three-way valve. This coordinated motion improves the uniformity and precision of the welding, allowing for even application of welding heat to each seam, thus avoiding localized overheating or welding defects. The back-and-forth motion of the welding head 527, combined with the rotation of the three-way valve, effectively improves the welding quality, enhances the strength and stability of the joints, and significantly strengthens the overall performance of the final product.

[0056] The welding head 527 mentioned above is a mature welding technology and equipment in the prior art. In this solution, its welding function is utilized, and its internal structure, principle and connection method will not be described further.

[0057] Work process: During use, the three-way valve is automatically lifted by the cooperation of the pushing mechanism 62 and the lifting mechanism 63. The three-way valve is fixed in the front, back, left and right positions by the cooperation of the fixing mechanism 64, the hydraulic mechanism 65 and the insertion mechanism 66. The welding mechanism 52 and the reciprocating extrusion mechanism 53 work together to weld the four arc-shaped connecting seams on the outer surface of the three-way valve during the rotation process.

[0058] The foregoing has shown and described 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. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A welding apparatus for valve manufacturing, comprising a housing (1), characterized in that: Universal wheels (2) are fixedly connected to the four corners of the lower end of the outer shell (1). A control panel (3) is fixedly installed on the right front end of the outer shell (1). An operating door (4) is rotatably connected to the left front end of the outer shell (1). A partition (7) is fixedly connected to the inner surface of the outer shell (1). An arc welding assembly (5) and an auxiliary assembly (6) are provided on the inner surface of the outer shell (1). The arc welding assembly (5) includes a hollow frame (51) fixedly connected to the inner surface of the partition (7), and a welding mechanism (52) is provided on the inner surface of the hollow frame (51). The welding mechanism (52) includes a circular groove rod (523) rotatably connected to the inner surface of the hollow frame (51) in the horizontal direction. The auxiliary component (6) includes a cylinder (61) fixedly connected to the right side of the inner surface of the outer shell (1), a pushing mechanism (62) is provided at the left end of the cylinder (61), a lifting mechanism (63) is provided on the inner surface of the partition (7), a fixing mechanism (64) is provided on the inner surface of the pushing mechanism (62), a hydraulic mechanism (65) is provided at the lower part of the inner surface of the outer shell (1), and an insertion mechanism (66) is provided on the inner surface of the circular groove rod (523). The pushing mechanism (62) includes a circular groove block (621) that is slidably connected to the inner surface of the cylinder (61) and the inner surface of the outer shell (1). A fixed ring (622) is fixedly connected to the outer surface of the cylinder (61). A rotating ring (623) is rotatably connected to the inner surface of the circular groove block (621). A second spring (624) is sleeved on the outer surface of the cylinder (61). The two ends of the second spring (624) are fixedly connected to one end of the fixed ring (622) and one end of the circular groove block (621), respectively. The fixing mechanism (64) includes a ring (641) fixedly connected to the upper end of the partition (7). Connecting blocks (642) are symmetrically fixedly connected to the outer surface of the rotating ring (623). The inner surfaces of the two connecting blocks (642) are slidably connected to the extrusion rods (643) that are slidably connected to the rotating ring (623). The ends of the two extrusion rods (643) that are close to each other are fixedly connected to a conical block (644). The outer surfaces of the two extrusion rods (643) are fitted with springs (645). The two ends of the two springs (645) are fixedly connected to the inner surface of the connecting block (642) and the rotating ring (623) respectively. The inner surface of the ring (641) is slidably connected with a number of arc-shaped blocks (646) distributed at equal intervals. A slider rod (631) is fixedly connected to the outer surface of the cylinder (61), and a Z-shaped plate (632) is fixedly connected to the left end of the slider rod (631). The hydraulic mechanism (65) includes a placement box (655) fixedly connected to the lower part of the inner surface of the outer shell (1). A rectangular plate (651) is fixedly connected to the inner surface of the placement box (655). A push rod (652) is fixedly connected to the rear left end of the Z-shaped plate (632) and is slidably connected to the placement box (655) and the rectangular plate (651). A spring five (654) is fixedly connected to the left end of the push rod (652). A push plate (653) is fixedly connected to the front end of the spring five (654) and is slidably connected to the placement box (655) and the push rod (652). The inner surface of the rectangular plate (651) is connected to the inner surface of the ring (641) through a rigid pipe. The inner surface of the rectangular plate (651) is connected to the inner surface of the grooved rod (523) through a rigid pipe.

2. The welding apparatus for valve production according to claim 1, characterized in that: The outer surface of the welding mechanism (52) and the outer surface of the hollow frame (51) are jointly provided with a reciprocating extrusion mechanism (53).

3. The welding apparatus for valve production according to claim 2, characterized in that: The hollow frame (51) is rotatably connected to a round rod (521) on its inner surface in the vertical direction. The upper end of the round rod (521) and the right end of the round groove rod (523) are fixedly connected to a transmission mechanism one (522). The lower end of the round rod (521) is fixedly connected to a transmission mechanism two (524). The outer surface of the hollow frame (51) is fixedly connected to a fixed frame (525). The inner surface of the fixed frame (525) is slidably connected to a slide rod (526). The inner surface of the slide rod (526) is fixedly installed with a welding head (527).

4. The welding apparatus for valve production according to claim 3, characterized in that: The reciprocating extrusion mechanism (53) includes an extrusion arc block (531) fixedly connected to the outer surface of the grooved rod (523), a fixed block (532) fixedly connected to the outer surface of the slide rod (526) and slidably connected to the fixed frame (525), and a spring (533) sleeved on the outer surface of the slide rod (526), ​​with the two ends of the spring (533) fixedly connected to the fixed block (532) and the fixed frame (525) respectively.

5. The welding apparatus for valve production according to claim 3, characterized in that: The lifting mechanism (63) includes a rectangular rod (634) fixedly connected to the inner surface of the partition (7). A lifting rod (635) is slidably connected to the inner surface of the rectangular rod (634). A positioning block (636) is fixedly connected to the upper end of the lifting rod (635). A spring three (637) is sleeved on the outer surface of the lifting rod (635). The two ends of the spring three (637) are fixedly connected to the lower part of the inner surface of the rectangular rod (634) and one end of the lifting rod (635), respectively. A convex block (633) is fixedly connected to the front part of the left end of the Z-shaped plate (632). The convex block (633) is fixedly connected to the transmission mechanism two (524).

6. The welding apparatus for valve production according to claim 1, characterized in that: The insertion mechanism (66) includes a piston rod (661) that is slidably connected to the inner surface of the groove rod (523). A conical block (662) is fixedly connected to the right end of the piston rod (661), and a rubber block (663) is fixedly connected to the outer surface of the conical block (662).

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