Welding device for valve production

Abstract

The invention relates to the field of valve welding, and discloses a welding device for valve production, which comprises a base, and a fixing mechanism and a connecting column arranged on one side of the base, a ball valve is placed on the base, the fixing mechanism comprises a fixing column fixedly connected to one side of the base, and a moving assembly is arranged above one side, facing the base, of the fixing column. A fixing assembly is arranged on the side, away from the fixing column, of the moving assembly, abutting assemblies are arranged on the upper side and the lower side of the fixing assembly correspondingly, and a pre-fixing assembly is arranged on the side, away from the moving assembly, of the fixing assembly. When a telescopic electric cylinder pushes a sliding vertical plate, a rotating rod drives an L-shaped rod to move along a sliding vertical groove, a U-shaped rod forms bidirectional clamping force on a circular flange plate, a sliding rod is driven by air pressure to be automatically inserted into a flange connecting hole, secondary mechanical locking is formed, and a ball valve can still keep precision during rotary welding through a double-fixing mechanism.

Description

Technical Field

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

[0002] In the patent application with application publication number CN202123029091.6, it includes a cylinder and a welded part, which is placed at the upper end of the cylinder, and also includes a base, a first fixed plate, a rotating rod, a turntable, a clamp, a first bolt, a connecting rod, a slider, a slide rail, a telescopic rod, a hydraulic cylinder, an auxiliary plate, a top beam and a side plate. The upper end of the base is equipped with a first fixed plate, the rotating rod is installed on the side end of the first fixed plate through a bearing, the side end of the rotating rod is equipped with a turntable, the side end of the turntable is provided with a groove, the cylinder is nested in the groove at the side end of the turntable, the lower end of the clamp is provided with an opening, the welded part is located in the opening at the lower end of the clamp, the side end of the clamp is provided with a threaded hole, the first bolt is screwed in the threaded hole at the side end of the clamp, the upper end of the clamp is equipped with a connecting rod, and the upper end of the connecting rod is equipped with a slider.

[0003] In the above patents, as well as in the traditional ball valve welding production process, there is a common problem of low efficiency in manual flipping operations. After completing single-sided welding, manual intervention must be relied upon to flip the valve body before continuing the welding operation on the other side. This manual operation mode not only significantly increases the labor intensity of workers and prolongs the welding cycle of a single product, but also, the flipping accuracy is difficult to guarantee, which may affect the consistency of welding quality. Summary of the Invention

[0004] The object of the present invention is to provide a welding device for valve production to solve the problems raised in the above background technology.

[0005] To solve the above technical problems, the technical solution of the present invention is: a welding device for valve production, comprising a base and a fixing mechanism and a connecting column arranged on one side of the base, a ball valve being placed on the base, the fixing mechanism comprising a fixing column fixedly connected to one side of the base, a moving assembly being arranged above a side of the fixing column facing the base, a fixing assembly being arranged on a side of the moving assembly away from the fixing column, pressing assemblies being arranged on the upper and lower sides of the fixing assembly, respectively, and a pre-fixing assembly for pre-positioning the ball valve being arranged on the side of the fixing assembly away from the moving assembly; The fixed component includes a connecting shell arranged on one side of the moving component, a sliding vertical groove is provided above the end of the connecting shell away from the moving component, the sliding vertical groove passes through the connecting shell, and a T-shaped groove is provided on the end of the connecting shell away from the moving component. A telescopic electric cylinder is fixedly provided on the side of the connecting shell close to the moving component, and the output end of the telescopic electric cylinder is fixedly connected to a sliding vertical plate, and the sliding vertical plate is slidably arranged inside the connecting shell, and the upper and lower sides of the sliding vertical plate away from the moving component are respectively rotatably connected to rotating rods.

[0006] Preferably, the pressing assembly includes an L-shaped rod rotatably connected to the other end of one of the rotating rods, the L-shaped rod is composed of a short vertical rod and a short horizontal rod, the short vertical rod on the L-shaped rod is slidably connected to the sliding vertical groove, two groups of L-shaped rods are respectively arranged on the upper and lower sides of the connecting shell, one end of the short horizontal rod on the L-shaped rod is fixedly connected to the U-shaped rod, and a plurality of movable grooves are opened on the side of the two groups of U-shaped rods away from each other, and a ball is movably arranged in the movable groove.

[0007] Preferably, the pre-fixed assembly includes a T-shaped block slidably connected to the T-shaped groove, one side of the T-shaped block is fixedly connected to a connecting short rod, the end of the connecting short rod away from the T-shaped block is fixedly connected to a limiting plate, four circular holes are provided on the limiting plate, and insertion rods are slidably provided in the four circular holes respectively, and the four insertion rods are commonly fixedly connected to a connecting plate at one end away from the limiting plate, a sleeve hole is provided on the connecting plate, and a plurality of first springs are fixedly provided between the limiting plate and the connecting plate, and the connecting plate is sleeved on the outside of the connecting short rod through the sleeve hole.

[0008] Preferably, a slide groove is provided above the side of the fixed column facing the base, a driving cylinder is provided below the inside of the slide groove, and the moving assembly includes a sliding horizontal plate slidably arranged inside the slide groove, and the sliding horizontal plate is fixedly arranged above the output end of the driving cylinder inside the slide groove, the sliding horizontal plate is fixedly connected to a fixed shell through a connecting plate, a servo motor is provided in the fixed shell, and an end of the fixed shell away from the sliding horizontal plate is fixedly connected to a connecting ring, a fixed disk is rotatably connected in the connecting ring, the fixed disk is fixedly connected to the output end of the servo motor in the fixed shell, and the other side of the fixed disk is fixedly connected to the connecting shell.

[0009] The top of the rotating plate is provided with a groove, and the upper end of the rotating plate is fixed with a limit ring. The upper end of the rotating plate is fixed with a groove, and the upper end of the rotating plate is fixed with a limit ring. Two air passages are provided above the rotating plate, and the two air passages are connected with the lower end of the groove. A one-way air inlet valve and a one-way air outlet valve are respectively provided in the two air passages. Two connecting grooves are provided below the groove. Two sliding holes are provided above the rotating plate, and the two sliding holes are symmetrically distributed on both sides of the groove. A limited sliding groove is respectively provided below the two sliding holes. A communicating groove is provided below the limiting sliding groove, and the communicating groove is connected with the lower end of the groove. A limited slide is slidably provided in the limiting slide, and a sliding rod is fixedly connected to the upper end of the limiting slide, and the sliding rod is slidably provided in the sliding hole.

[0010] Preferably, a limit plate is slidingly arranged in the groove, a sliding plate is fixedly connected to the upper end of the limit plate, the diameter of the sliding plate is smaller than the through hole on the limit ring, a guide column is fixedly connected to the bottom of the limit plate, a vertical groove corresponding to the guide column is opened at the bottom of the groove, a plurality of reset springs are fixedly arranged between the limit plate and the groove, a drive assembly is arranged below the connecting plate, and a motor protection shell is fixedly connected to the outside of the base.

[0011] Preferably, the drive assembly includes a rotating disk fixedly connected to the lower end of the connecting disk, a drive motor is fixedly installed inside the motor protective shell, a rotating disk is also fixedly installed at the output end of the drive motor, and a rotating belt is commonly provided on the outer sides of the two rotating disks.

[0012] Preferably, a sliding cavity is provided on the upper side of the connecting column toward the base, a driving electric cylinder is provided in the sliding cavity, an electric telescopic rod is fixedly provided at the output end of the driving electric cylinder, and a welding assembly is provided at the output end of the electric telescopic rod.

[0013] Preferably, circular flanges are fixedly provided on the upper and lower sides of the ball valve, and a plurality of flange connection holes are provided on the circular flanges. A rectangular connection plate is fixedly provided on one side of the ball valve, and a limiting hole is provided on the rectangular connection plate.

[0014] Compared with the prior art, the technical solution of the present invention has the following advantages: (1) One side of the fixing mechanism is provided with a moving component, a fixing component, a pressing component and a pre-fixing component. Through the synergistic effect of the pre-fixing component and the pressing component, the positioning accuracy and stability of the ball valve during the welding process are significantly improved. The insert rod in the pre-fixing component is precisely matched with the limit hole on the rectangular connecting plate of the ball valve, realizing rapid pre-positioning of the initial position and avoiding the deviation caused by traditional manual alignment. When the telescopic electric cylinder pushes the sliding vertical plate, the rotating rod drives the L-shaped rod to move along the sliding vertical groove, so that the U-shaped rod forms a bidirectional clamping force on the circular flange, ensuring that the ball valve is completely fixed in three-dimensional space. In particular, the spherical structure set on the U-shaped rod can effectively reduce friction resistance during welding rotation, maintaining clamping stability and avoiding the risk of deformation caused by overpressure. In addition, the sliding rod in the rotating component is automatically inserted into the flange connection hole by air pressure drive to form a secondary mechanical lock. The double fixing mechanism enables the ball valve to maintain accuracy during rotation welding. (2) The device realizes fully automatic multi-angle welding of ball valves through the linkage design of driving components, rotating components and moving components. The driving motor drives the connecting disk to rotate through the rotating belt, so that the ball valve can adjust the welding position 360° without dead angles, and the servo motor in the fixed shell drives the fixed disk to flip the ball valve. With the vertical lifting of the electric telescopic rod, the continuous welding of the flanges at both ends of the ball valve can be completed without human intervention. When the sliding disk is under pressure, the lifting of the sliding rod is automatically adjusted, which simplifies the mechanical structure and improves the response speed. In addition, the cooperation of the reset spring and the limit ring ensures rapid reset after welding. When welding the ball valve, it is no longer necessary to rely on workers to manually flip the ball valve and fix it, which improves the overall welding efficiency. The shapes of the pre-fixed components are divided into various types, which can adapt to the specifications of various ball valves and improve the compatibility of the equipment with the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the base structure of the present invention; Figure 3 This is a structural diagram of the fixing mechanism of the present invention; Figure 4 This is a schematic diagram of the structure of the mobile component of the present invention; Figure 5 This is a schematic diagram of the structure of the fixing assembly of the present invention; Figure 6 This is a schematic diagram of the structure of the pressing component of the present invention; Figure 7 This is a schematic diagram of the structure of the pre-fixed assembly of the present invention; Figure 8 This is a schematic diagram of the structure of the rotating assembly of the present invention; Figure 9 This is a schematic diagram of the structure of the drive assembly of the present invention; Figure 10 This is a schematic diagram of the ball valve structure of the present invention; Figure 11 This is a schematic structural diagram of the second pre-fixed component of the present invention.

[0016] In the figure: 1. Base; 11. Rotating assembly; 111. Rotating plate; 112. Groove; 113. Limiting ring; 114. Airway; 115. Connecting groove; 116. Limiting slide; 117. Slide hole; 118. Limiting slide plate; 119. Slide rod; 12. Connecting plate; 13. Sliding plate; 14. Limiting plate; 15. Guide column; 16. Return spring; 17. Driving assembly; 171. Rotating plate; 172. Driving motor; 173. Rotating belt; 18. Motor protection shell; 2. Fixing mechanism; 21. Fixing column; 211. Slide; 22. Moving assembly; 221. Sliding horizontal plate; 222. Fixing shell; 223. Connecting ring; 224. Fixing plate; 23. Fixing assembly ;231, connecting shell; 232, sliding vertical groove; 233, T-shaped slot; 234, telescopic electric cylinder; 235, sliding vertical plate; 236, rotating rod; 24, pressing assembly; 241, L-shaped rod; 242, U-shaped rod; 243, movable slot; 244, sphere; 25, pre-fixing assembly; 251, connecting short rod; 252, T-shaped block; 253, limiting plate; 254, round hole; 255, first spring; 256, plug rod; 257, connecting plate; 258, sleeve hole; 3, connecting column; 31, sliding cavity; 32, electric telescopic rod; 33, welding assembly; 4, ball valve; 41, circular flange; 411, flange connecting hole; 42, rectangular connecting plate; 421, limiting hole. DETAILED DESCRIPTION

[0017] To make the purpose, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0018] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the usual meanings understood by persons of ordinary skill in the field to which this disclosure belongs. The words “including” or “comprising” and the like used in this disclosure mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The words “connected” or “connected” and the like are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. “Up”, “down”, “left”, “right” and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0019] Example 1: like Figures 1 to 10As shown, the present invention provides a valve production welding device, comprising a base 1 and a fixing mechanism 2 and a connecting column 3 provided on one side of the base 1. A ball valve 4 is placed on the base 1. The fixing mechanism 2 comprises a fixing column 21 fixedly connected to one side of the base 1. A moving assembly 22 is provided above the side of the fixing column 21 facing the base 1. A fixing assembly 23 is provided on the side of the moving assembly 22 away from the fixing column 21. A pressing assembly 24 is provided on the upper and lower sides of the fixing assembly 23 respectively. A pre-fixing assembly 25 for pre-positioning the ball valve 4 is provided on the side of the fixing assembly 23 away from the moving assembly 22. The fixed component 23 includes a connecting shell 231 arranged on one side of the moving component 22, and a sliding vertical groove 232 is provided above the end of the connecting shell 231 away from the moving component 22, and the sliding vertical groove 232 passes through the connecting shell 231, and a T-shaped slot 233 is provided at the end of the connecting shell 231 away from the moving component 22. A telescopic electric cylinder 234 is fixedly provided on the side of the connecting shell 231 close to the moving component 22, and a sliding vertical plate 235 is fixedly connected to the output end of the telescopic electric cylinder 234. The sliding vertical plate 235 is slidably arranged inside the connecting shell 231, and the sliding vertical plate 235 is rotatably connected to the upper and lower sides of the side away from the moving component 22 with a rotating rod 236.

[0020] The pressing assembly 24 includes an L-shaped rod 241 rotatably connected to the other end of one of the rotating rods 236. The L-shaped rod 241 is composed of a short vertical rod and a short horizontal rod. The short vertical rod on the L-shaped rod 241 is slidably connected to the sliding vertical slot 232. Two groups of L-shaped rods 241 are respectively arranged on the upper and lower sides of the connecting shell 231. One end of the short horizontal rod on the L-shaped rod 241 is fixedly connected to the U-shaped rod 242. A plurality of movable grooves 243 are opened on the side of the two groups of U-shaped rods 242 away from each other, and a ball 244 is movably arranged in the movable groove 243.

[0021] The pre-fixed component 25 includes a T-shaped block 252 that is slidably connected to the T-shaped groove 233, and a connecting short rod 251 is fixedly connected to one side of the T-shaped block 252. The end of the connecting short rod 251 away from the T-shaped block 252 is fixedly connected to the limiting plate 253. The limiting plate 253 is rectangular and has four circular holes 254. Insert rods 256 are respectively slidably arranged in the four circular holes 254. The four insert rods 256 are fixedly connected to a connecting plate 257 at one end away from the limiting plate 253. A sleeve hole 258 is provided on the connecting plate 257. A plurality of first springs 255 are fixedly arranged between the limiting plate 253 and the connecting plate 257. The connecting plate 257 is sleeved on the outside of the connecting short rod 251 through the sleeve hole 258.

[0022] A slide groove 211 is provided on the upper side of the fixed column 21 facing the base 1, and a driving cylinder is provided at the lower part of the slide groove 211. The moving component 22 includes a sliding horizontal plate 221 slidably set inside the slide groove 211, and the sliding horizontal plate 221 is fixedly set above the output end of the driving cylinder inside the slide groove 211. The sliding horizontal plate 221 is fixedly connected to the fixed shell 222 through a connecting plate, and a servo motor is provided in the fixed shell 222. The end of the fixed shell 222 away from the sliding horizontal plate 221 is fixedly connected to a connecting ring 223, and a fixed disk 224 is rotatably connected in the connecting ring 223. The fixed disk 224 is fixedly connected to the output end of the servo motor in the fixed shell 222, and the other side of the fixed disk 224 is fixedly connected to the connecting shell 231.

[0023] A rotating assembly 11 is provided on the base 1, and a connecting disk 12 is provided below the rotating assembly 11. The connecting disk 12 is rotatably provided above the interior of the base 1. The rotating assembly 11 includes a rotating plate 111 fixedly provided on the upper end of the connecting disk 12. A groove 112 is provided at the center above the rotating plate 111. A limiting ring 113 is fixedly connected to the upper part of the groove 112. Two air passages 114 are provided above the rotating plate 111. The two air passages 114 are connected to the lower part of the interior of the groove 112. A one-way air inlet valve and a one-way air outlet valve are respectively provided in the two air passages 114. When the air pressure in the groove 112 is too high, part of the air is discharged from the air passage 114 provided with the one-way air outlet valve. When the air pressure in the groove 112 is too low, part of the gas is inhaled from the air duct 114 where the one-way air inlet valve is set. Two connecting grooves 115 are provided at the bottom of the groove 112, and two sliding holes 117 are provided above the rotating plate 111. The two sliding holes 117 are symmetrically distributed on both sides of the groove 112. A limiting sliding groove 116 is provided below the two sliding holes 117, and a connecting groove 115 is provided below the limiting sliding groove 116. The connecting groove 115 is connected with the bottom of the groove 112. A limiting slide 118 is slidably provided in the limiting slide 116. A sliding rod 119 is fixedly connected to the upper end of the limiting slide 118, and the sliding rod 119 is slidably provided in the sliding hole 117.

[0024] A limit plate 14 is slidingly set in the groove 112, and a sliding plate 13 is fixedly connected to the upper end of the limit plate 14. The diameter of the sliding plate 13 is smaller than the through hole on the limit ring 113. A guide column 15 is fixedly connected to the bottom of the limit plate 14. A vertical groove corresponding to the guide column 15 is opened at the bottom of the groove 112. A plurality of return springs 16 are fixedly set between the limit plate 14 and the groove 112. A driving assembly 17 is provided below the connecting plate 12, and a motor protection shell 18 is fixedly connected to the outside of the base 1.

[0025] The driving assembly 17 includes a rotating disk 171 fixedly connected to the lower end of the connecting disk 12, a driving motor 172 is fixedly installed inside the motor protection shell 18, and a rotating disk 171 is also fixedly installed on the output end of the driving motor 172. A rotating belt 173 is commonly provided on the outside of the two rotating disks 171.

[0026] A sliding cavity 31 is provided on the upper side of the connecting column 3 facing the base 1. A driving cylinder is provided in the sliding cavity 31. An electric telescopic rod 32 is fixedly provided at the output end of the driving cylinder. A welding assembly 33 is provided at the output end of the electric telescopic rod 32.

[0027] Circular flanges 41 are fixedly provided on the upper and lower sides of the ball valve 4, and a plurality of flange connection holes 411 are opened on the circular flange 41. A rectangular connecting plate 42 is fixedly provided on one side of the ball valve 4, and a plurality of limiting holes 421 are opened on the rectangular connecting plate 42. The diameter of the limiting hole 421 is larger than the diameter of the insertion rod 256.

[0028] The working principle of the present invention is as follows: when in use, the T-shaped block 252 is inserted into the T-shaped groove 233, and the T-shaped block 252 is pushed to the bottom of the T-shaped groove 233. At this time, the rectangular connecting plate 42 on the ball valve 4 is aligned with the limit plate 253, and the limit hole 421 is aligned with the plug rod 256, and installed. At this time, the limit plate 253 and the plug rod 256 limit the position of the ball valve 4, so that the two flange connecting holes 411 on the circular flange 41 are aligned with the sliding rod 119. After the ball valve 4 is installed, continue to push the ball valve 4 to prevent the ball valve 4 from falling off. The output end of the telescopic electric cylinder 234 extends, and the telescopic electric cylinder 234 drives the sliding vertical plate 235 to slide in the connecting shell 231. The sliding vertical plate 235 pushes one end of the rotating rod 236 to move, and the other end of the rotating rod 236 pushes the short vertical rod on the L-shaped rod 241 to slide in the sliding vertical groove 232. The rod 241 slides out of the sliding vertical slot 232, and the L-shaped rod 241 drives the U-shaped rod 242 to approach the circular flanges 41 at both ends of the ball valve 4. Finally, the upper U-shaped rod 242 fits against the lower surface of the upper circular flange 41, and the lower U-shaped rod 242 fits against the upper surface of the lower circular flange 41. The two U-shaped rods 242 squeeze the two circular flanges 41 to fix the ball valve 4. At this time, the ball valve 4 is no longer pushed. The connecting plate 257 is pulled in the direction away from the limiting plate 253. The connecting plate 257 drives the insertion rod 256 to slide in the circular hole 254 and the limiting hole 421. The insertion rod 256 slides out of the limiting hole 421. Then, the connecting short rod 251 is pulled upward to make the T-shaped block 252 slide out of the T-slot 233, and the pre-fixing assembly 25 is removed from one side of the connecting shell 231. After the pre-fixing component 25 is removed, the driving cylinder in the fixing column 21 drives the sliding cross plate 221 to move downward, and the sliding cross plate 221 drives the ball valve 4 to move downward through the moving component 22, the fixing component 23 and the pressing component 24, and the ball valve 4 squeezes the sliding plate 13, and the sliding plate 13 is not squeezed into the groove 112, and the sliding plate 13 drives the limiting plate 14 to slide downward in the groove 112, and the limiting plate 14 squeezes the gas in the groove 112 from the communicating groove 115 into the limiting slide 116, and the gas in the limiting slide 116 pushes the limiting slide plate 118 to move upward, and the limiting slide plate 118 drives the sliding rod 119 to move upward, and the sliding rod 119 is exposed from the sliding hole 117, and the sliding rod 119 is inserted into the two flange connection holes 411 on the circular flange 41 below, fixing the ball valve 4 above the rotating plate 111; The output end of the electric telescopic rod 32 drives the welding assembly 33 to move to the top of the ball valve 4, and the output end of the driving electric cylinder in the control sliding chamber 31 drives the electric telescopic rod 32 to move downward, so that the welding assembly 33 contacts the welding part of the ball valve 4. The output end of the telescopic electric cylinder 234 drives the sliding vertical plate 235 to move a little distance in the direction of the pressing assembly 24, so that the squeezing force of the U-shaped rod 242 on the circular flange 41 is weakened. The output end of the driving motor 172 drives the connecting plate 12 to rotate through the rotating disk 171 and the rotating belt 173, and the connecting plate 12 drives the rotating The plate 111 moves, and the rotating plate 111 drives the ball valve 4 to rotate through the slide rod 119. The welding assembly 33 remains stationary. Relying on the rotation of the ball valve 4 itself, the ball 244 is welded inside the ball valve 4. At this time, the ball 244 contacts the circular flange 41 to prevent the contact force between the U-shaped rod 242 and the circular flange 41 from being too large, which affects the rotation of the ball valve 4. When one end of the ball valve 4 is welded, the output end of the driving electric cylinder in the sliding cavity 31 outputs, driving the welding assembly 33 away from the ball valve 4, and the telescopic electric cylinder 234 drives the output end to drive the sliding vertical plate 235 away from the pressing assembly 24. , so that the U-shaped rod 242 fits tightly with the circular flange 41. The output end of the driving cylinder in the slide groove 211 drives the sliding cross plate 221 to move upward, so that the moving component 22, the fixed component 23 and the pressing component 24 drive the ball valve 4 to rise a distance. After the ball valve 4 rises, the return spring 16 pushes the limit plate 14 and the sliding plate 13 to return to their original position. The gas in the limit slide groove 116 and the connecting groove 115 is drawn into the groove 112, and the slide rod 119 retracts into the slide hole 117. Subsequently, the servo motor in the fixed housing 222 drives the fixed plate 22 4 rotates, and the fixed plate 224 drives the ball valve 4 to flip 180 degrees through the fixing assembly 23 and the pressing assembly 24, so that the positions of the two circular flanges 41 are swapped. Subsequently, the output end of the driving cylinder in the slide groove 211 drives the sliding cross plate 221 to move downward, so that the ball valve 4 falls on the rotating plate 111. The sliding rod 119 is inserted into the flange connection hole 411 again, and the output end of the driving electric cylinder in the sliding cavity 31 retracts, driving the welding assembly 33 to approach the ball valve 4 and continue welding. Continuous welding of the flanges at both ends of the ball valve can be completed without manual intervention, thereby improving welding efficiency.

[0029] Example 2: like Figure 11As shown, the pre-fixed component 25 includes a T-shaped block 252 that is slidably connected to the T-shaped groove 233, and a connecting short rod 251 is fixedly connected to one side of the T-shaped block 252. The end of the connecting short rod 251 away from the T-shaped block 252 is fixedly connected to the limiting plate 253. The limiting plate 253 is circular and has four circular holes 254. Insert rods 256 are respectively slidably arranged in the four circular holes 254. The four insert rods 256 are fixedly connected to a connecting plate 257 at one end away from the limiting plate 253. A sleeve hole 258 is provided on the connecting plate 257. A plurality of first springs 255 are fixedly arranged between the limiting plate 253 and the connecting plate 257. The connecting plate 257 is sleeved on the outside of the connecting short rod 251 through the sleeve hole 258.

[0030] In this embodiment, the shape of the pre-fixed component 25 matches the shape of the rectangular connecting plate 42. When it is necessary to weld a ball valve 4 of another specification, the pre-fixed component 25 with a shape corresponding to the rectangular connecting plate 42 on the ball valve 4 is replaced, so that this equipment can be used for ball valves 4 of more specifications. There is no need for multiple devices to match ball valves 4 of different specifications, thereby reducing the funds for purchasing equipment.

[0031] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the spirit and scope of protection of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present invention.

Claims

1. A welding device for valve production, comprising a base (1) and a fixing mechanism (2) and a connecting column (3) arranged on one side of the base (1), wherein a ball valve (4) is placed on the base (1), characterized in that: The fixing mechanism (2) comprises a fixing column (21) fixedly connected to one side of the base (1); a moving component (22) is provided above the side of the fixing column (21) facing the base (1); a fixing component (23) is provided on the side of the moving component (22) away from the fixing column (21); pressing components (24) are provided on the upper and lower sides of the fixing component (23); and a pre-fixing component (25) for pre-positioning the ball valve (4) is provided on the side of the fixing component (23) away from the moving component (22); The fixed component (23) includes a connecting shell (231) arranged on one side of the moving component (22); a sliding vertical slot (232) is provided above the end of the connecting shell (231) away from the moving component (22); the sliding vertical slot (232) penetrates the connecting shell (231); a T-shaped slot (233) is provided at the end of the connecting shell (231) away from the moving component (22); a telescopic electric cylinder (234) is fixedly provided on the side of the connecting shell (231) close to the moving component (22); an output end of the telescopic electric cylinder (234) is fixedly connected to a sliding vertical plate (235); the sliding vertical plate (235) is slidably arranged inside the connecting shell (231); and the sliding vertical plate (235) is rotatably connected to rotating rods (236) at the upper and lower sides of the side of the sliding vertical plate (235) away from the moving component (22).

2. A valve production welding device according to claim 1, characterized in that: The pressing assembly (24) includes an L-shaped rod (241) rotatably connected to the other end of one of the rotating rods (236), the L-shaped rod (241) consisting of a short vertical rod and a short horizontal rod, the short vertical rod on the L-shaped rod (241) being slidably connected to the sliding vertical slot (232), two groups of the L-shaped rods (241) being respectively arranged on the upper and lower sides of the connecting shell (231), one end of the short horizontal rod on the L-shaped rod (241) being fixedly connected to the U-shaped rod (242), a plurality of movable grooves (243) being provided on the side away from each other of the two groups of the U-shaped rods (242), and a sphere (244) being movably arranged in the movable groove (243).

3. A valve production welding device according to claim 1, characterized in that: The pre-fixing assembly (25) includes a T-shaped block (252) slidably connected in the T-shaped groove (233), a connecting short rod (251) fixedly connected to one side of the T-shaped block (252), and an end of the connecting short rod (251) away from the T-shaped block (252) is fixedly connected to a limiting plate (253), and four circular holes (254) are provided on the limiting plate (253), and plug rods (256) are slidably provided in the four circular holes (254), and one end of the four plug rods (256) away from the limiting plate (253) is fixedly connected to a connecting plate (257), and a sleeve hole (258) is provided on the connecting plate (257), and a plurality of first springs (255) are fixedly provided between the limiting plate (253) and the connecting plate (257), and the connecting plate (257) is sleeved on the outside of the connecting short rod (251) through the sleeve hole (258).

4. A valve production welding device according to claim 1, characterized in that: A slide groove (211) is provided above one side of the fixed column (21) facing the base (1), and a driving cylinder is provided below the inside of the slide groove (211). The moving component (22) includes a sliding horizontal plate (221) slidably provided inside the slide groove (211), and the sliding horizontal plate (221) is fixedly provided above the output end of the driving cylinder inside the slide groove (211). The sliding horizontal plate (221) is fixedly connected to a fixed shell (222) through a connecting plate, and a driving motor is provided inside the fixed shell (222). An end of the fixed shell (222) away from the sliding horizontal plate (221) is fixedly connected to a connecting ring (223), and a fixed disk (224) is rotatably connected inside the connecting ring (223). The fixed disk (224) is fixedly connected to the output end of the driving motor in the fixed shell (222), and the other side of the fixed disk (224) is fixedly connected to the connecting shell (231).

5. A valve production welding device according to claim 1, characterized in that: The base (1) is provided with a rotating assembly (11), a connecting disk (12) is provided below the rotating assembly (11), and the connecting disk (12) is rotatably provided above the inside of the base (1). The rotating assembly (11) includes a rotating plate (111) fixedly provided on the upper end of the connecting disk (12), a groove (112) is provided at the center above the rotating plate (111), and a limiting ring (113) is fixedly connected to the upper inside of the groove (112). Two air passages (114) are provided above the rotating plate (111), and the two air passages (114) are connected to the lower inside of the groove (112). A one-way air inlet valve and a one-way air outlet valve are provided in the two air passages (114). The valve comprises two connecting grooves (115) provided at the lower part of the groove (112), two sliding holes (117) provided at the upper part of the rotating plate (111), the two sliding holes (117) being symmetrically distributed on both sides of the groove (112), and limiting sliding grooves (116) being provided at the lower part of the two sliding holes (117), a connecting groove (115) being provided at the lower part of the limiting sliding groove (116), the connecting groove (115) being connected to the lower part of the groove (112), a limiting slide plate (118) being slidably provided in the limiting slide plate (116), a slide rod (119) being fixedly connected to the upper end of the limiting slide plate (118), and the slide rod (119) being slidably provided in the sliding hole (117).

6. A valve production welding device according to claim 5, characterized in that: A limiting plate (14) is slidably arranged in the groove (112), and a sliding plate (13) is fixedly connected to the upper end of the limiting plate (14). The diameter of the sliding plate (13) is smaller than the through hole on the limiting ring (113). A guide column (15) is fixedly connected below the limiting plate (14). A vertical groove corresponding to the guide column (15) is opened inside the lower part of the groove (112). A plurality of return springs (16) are fixedly arranged between the limiting plate (14) and the groove (112). A driving assembly (17) is arranged below the connecting plate (12), and a motor protection shell (18) is fixedly connected to the outer side of the base (1).

7. A valve production welding device according to claim 6, characterized in that: The driving assembly (17) comprises a rotating disk (171) fixedly connected to the lower end of the connecting disk (12); a driving motor (172) is fixedly arranged inside the motor protection shell (18); a rotating disk (171) is also fixedly arranged at the output end of the driving motor (172); and a rotating belt (173) is commonly arranged on the outside of the two rotating disks (171).

8. The valve production welding device according to claim 1, characterized in that: A sliding cavity (31) is provided on an upper side of the connecting column (3) facing the base (1), a driving electric cylinder is provided in the sliding cavity (31), an electric telescopic rod (32) is fixedly provided at the output end of the driving electric cylinder, and a welding assembly (33) is provided at the output end of the electric telescopic rod (32).

9. A valve production welding device according to claim 1, characterized in that: Circular flanges (41) are fixedly provided on the upper and lower sides of the ball valve (4), and a plurality of flange connection holes (411) are provided on the circular flange (41). A rectangular connection plate (42) is fixedly provided on one side of the ball valve (4), and a limiting hole (421) is provided on the rectangular connection plate (42).

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