A valve welding device

Abstract

A valve welding device relates to the field of valve processing technology, comprising: a transmission mechanism, a clamping mechanism, a discharging mechanism, and a welding mechanism; the transmission mechanism is installed on the ground; the large frame of the clamping mechanism is attached to a predetermined installation area on the ground through a fastening mechanism, and the clamping mechanism is used to pick up and fix the valve to be welded; the lower end surface of the support frame of the discharging mechanism is installed on the ground through screws and nuts, and the discharging mechanism is used to pick up and transport the flange; there are two groups of welding mechanisms, and the two groups of welding mechanisms are respectively installed on the lower end surfaces of the cross plates of the large frame, and the two welding mechanisms can weld the flanges on both sides of the valve at the same time; the equipment can automatically clamp and fix the valve when the flange is welded to the valve, which is convenient for the equipment to weld and effectively improves the welding accuracy; the equipment can weld the flanges on both sides of the valve at the same time, effectively improving work efficiency; the equipment can automatically pick up and transport the flange, saving manpower and material resources.

Description

Technical Field

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

[0002] A valve is a device used to control the flow of gases, liquids, gases or liquids containing solid powders in various pipelines and equipment. A valve is usually composed of a valve body, a valve cover, a valve seat, a starter and a stopper, a drive mechanism, a seal and fasteners. The control function of the valve is achieved by driving the starter and the stopper to rise and fall, slide, swing or rotate to change the size of the flow area.

[0003] Valves need to be welded during processing. The current valve welding structure cannot be effectively automatically fixed during valve welding, which affects welding. At the same time, valve welding flanges can only be welded one by one, which is relatively inefficient.

[0004] To this end, a valve welding device is needed, which can automatically clamp and fix the valve when the flange and the valve are welded, which is convenient for the equipment to weld and effectively improves the welding accuracy; the equipment can weld the flanges on both sides of the valve at the same time, effectively improving work efficiency; the equipment can automatically pick up and transport the flange, saving manpower and material resources. Summary of the invention

[0005] In response to the above technical problems, the present invention provides a valve welding device, which can automatically clamp and fix the valve when the flange is welded to the valve, thereby facilitating welding and effectively improving welding accuracy; the device can simultaneously weld the flanges on both sides of the valve, effectively improving work efficiency; the device can automatically pick up and transport the flange, saving manpower and material resources.

[0006] The technical scheme used in the present invention is: a valve welding device, comprising: a transmission mechanism, a clamping mechanism, a discharging mechanism, and a welding mechanism; the transmission mechanism is installed on the ground, and the transmission mechanism is used for transporting valves to be welded; the large frame of the clamping mechanism is attached to a predetermined installation area on the ground through a fastening mechanism, and the clamping mechanism is used for taking and fixing valves to be welded; the lower end surface of the support frame of the discharging mechanism is installed on the ground through screws and nuts, and the discharging mechanism is used for taking and transporting flanges; there are two groups of welding mechanisms, and the two groups of welding mechanisms are respectively installed on the lower end surfaces of the horizontal plates of the large frame, and the two welding mechanisms can weld the flanges on both sides of the valve at the same time;

[0007] The clamping mechanism includes: a bracket, a sleeve, an electric cylinder I, a three-rod frame, a limit block, a vertical rod, a triangular plate, a connecting rod, and an electric cylinder II; the fixed end of the sleeve is fixedly connected to the horizontal plate of the large frame, and the piston rod end of the sleeve is fixedly connected to the upper end surface of the bracket; the cylinder body of the electric cylinder I is fixedly installed on the horizontal plate of the large frame, and the piston rod end of the electric cylinder I is connected to the piston rod end of the sleeve through a plate; the three-rod frame is fixedly installed on the lower end surface of the bracket, and grooves are respectively provided on the three rods of the three-rod frame; there are three limit blocks, and the three limit blocks are respectively It is slidably installed in the grooves on the three rods of the three-rod frame; there are three vertical rods, and the upper ends of the three vertical rods are respectively fixedly installed on the lower ends of the corresponding three limit blocks; the axis of the triangular plate is rotatably installed in the round hole in the middle position of the three-rod frame; there are three connecting rods, one end of the three connecting rods is rotatably connected to the outer ends of the three plates on the triangular plate, and the other ends of the three connecting rods are respectively rotatably connected to the upper ends of the three limit blocks; the cylinder body part of the electric cylinder II is fixedly connected to the side of the three-rod frame, and the piston tube end of the electric cylinder II is fixedly connected to the upper end of a limit block.

[0008] Preferably, a slot is provided at the lower end of the vertical rod.

[0009] Preferably, the discharging mechanism also includes: a storage barrel, a top plate I, a horizontal plate I, a motor I, a push rod, a Z-shaped rod, an electric cylinder III, a semi-ring groove, a motor II, a motor III, a cylinder, and a small electric cylinder IV; the storage barrel is fixedly mounted on the upper end of the support frame, and a horizontal groove is provided at the front end of the storage barrel; the round rod on the rear side of the top plate I is slidably mounted in the round hole of the rear plate of the storage barrel, and the front end of the top plate I is against the last flange in the storage barrel; the horizontal plate I is fixedly mounted on the rear side round rod of the top plate I; the push rod is slidably mounted in the horizontal groove at the front end of the storage barrel, and a groove is provided at the rear end of the push rod; one end of the Z-shaped rod is rotatably mounted in the round hole of the side plate of the storage barrel, and the other end of the Z-shaped rod slides in the groove at the rear end of the push rod; the motor I is fixed The lower end surface of the plate installed on the side of the storage barrel has a motor shaft fixedly connected to one end of the Z-shaped rod; the cylinder body of the electric cylinder III is slidably installed on the side panel of the support frame, and the piston rod end of the electric cylinder III is fixedly connected to the semi-annular groove, on which a clamping plate is slidably installed. In the initial position, the semi-annular groove is located on the side of the horizontal groove at the front end of the storage barrel; the cylinder body of the small electric cylinder IV is fixedly installed on the semi-annular groove, and the piston rod end of the small electric cylinder IV is fixedly connected to the clamping plate slidably installed in the semi-annular groove; the motor II is fixedly installed on the plate on the side of the support frame, and its motor shaft is fixedly connected to a cam, which contacts the lower end vertical plate of the cylinder body of the electric cylinder III; the motor III is fixedly installed on the storage barrel, and its motor shaft is fixedly connected to the cylinder.

[0010] Preferably, springs are provided on both sides of the horizontal plate I, and the other ends of the springs are respectively connected to the two side plates of the storage barrel.

[0011] Preferably, a top plate is fixedly mounted on the front end of the push rod.

[0012] Preferably, a vertical plate is fixedly mounted on the lower end of the cylinder body of the electric cylinder III, a spring is mounted on the vertical plate, and the other end of the spring is connected to the support frame.

[0013] Preferably, the outer surface of the cylinder is a frosted surface, and the cylinder contacts the side edge of the flange moved into the semi-annular groove.

[0014] Preferably, the welding mechanism includes: a camera, a semi-ring frame, a semi-ring plate, a gear I, a welding machine, and a motor IV; the camera is fixedly mounted on the lower end surface of the large frame horizontal plate; the semi-ring frame is fixedly mounted on the lower end surface of the large frame horizontal plate; the semi-ring plate is rotatably mounted on the semi-ring frame, and gear teeth are provided on the periphery of the semi-ring plate; there are two gears I, and the shafts of the two gears I are respectively rotatably mounted in two circular holes on the semi-ring frame, and the two gears I are located on both sides of the semi-ring plate, and the two gears I are meshed with the gear teeth on the periphery of the semi-ring plate; the welding machine is fixedly mounted on the semi-ring plate; the motor IV is fixedly mounted on the side of the semi-ring frame, and its motor shaft is respectively connected to the shafts of the two gears I through a synchronous belt.

[0015] The beneficial effects of the present invention compared with the prior art are:

[0016] 1. The present invention pushes the piston rod end of the sleeve downward through the electric cylinder I, and the piston rod end of the sleeve drives the bracket to move downward, the bracket drives the three-rod frame to move downward, the electric cylinder I drives the sleeve to contract, the sleeve drives the bracket to move upward, the bracket drives the three-rod frame to move upward, the three-rod frame drives the vertical rod to move upward, the vertical rod drives the valve clamped therein to move the middle position of the two welding mechanisms to remain fixed, so as to prevent the valve from shifting during valve welding.

[0017] 2. The present invention is started by motor I, which drives the Z-shaped rod to rotate, and the Z-shaped rod drives the push rod to move forward and backward. When the push rod moves forward, the top plate at the front end of the push rod can push out the flange located in the groove at the front end of the storage barrel and push it into the semi-annular groove. Then, the Z-shaped rod continues to work, driving the top plate at the front end of the push rod to move to the right side of the storage barrel. At this time, due to the action of the springs on both sides of the horizontal plate I, the top plate I is automatically pushed forward, so that the next flange moves to the horizontal groove at the front end of the storage barrel, thereby realizing automatic flange loading and saving manpower.

[0018] 3. The present invention is started by the motor IV, which drives the two gears I to rotate. The two gears I drive the semi-ring plate to rotate around the valve. The semi-ring plate drives the welding machine to rotate around the valve while welding, so that the valve and the flange are welded together, and the two flanges are welded at the same time, which effectively improves the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the first angle of the overall part of the present invention.

[0020] Figure 2 It is a second angle structural schematic diagram of the overall part of the present invention.

[0021] Figure 3 It is a schematic diagram of the combined structure of the clamping mechanism and the welding mechanism of the present invention.

[0022] Figure 4 It is a schematic structural diagram of the first part of the clamping mechanism of the present invention.

[0023] Figure 5 It is a schematic diagram of the second part of the structure of the clamping mechanism of the present invention.

[0024] Figure 6 It is a schematic diagram of the discharging mechanism of the present invention.

[0025] Figure 7 It is a schematic diagram of the welding mechanism of the present invention.

[0026] Figure 8 It is a partial structural schematic diagram of the welding mechanism of the present invention.

[0027] Figure 1: Transmission mechanism; 2: Clamping mechanism; 3: Discharging mechanism; 4: Welding mechanism; 201: Large frame; 202: Bracket; 203: Sleeve; 204: Electric cylinder I; 205: Three-rod frame; 206: Limit block; 207: Vertical rod; 208: Triangle plate; 209: Connecting rod; 210: Electric cylinder II; 301: Support frame; 302: Storage barrel; 303: Top plate I; 304: Horizontal plate I; 305: Motor I; 306: Top rod; 307: Z-shaped rod; 308: Electric cylinder III; 309: Semi-ring groove; 310: Motor II; 311: Motor III; 312: Cylinder; 313: Small electric cylinder IV; 401: Camera; 402: Semi-ring frame; 403: Semi-ring plate; 404: Gear I; 405: Welding machine; 406: Motor IV. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further specifically described below by way of embodiments and in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0029] It should be noted that, in this article, some connection methods, such as "fixed connection, fixed installation" refer to, but are not limited to, fixing two components such as welding, screw and nut fixing, bonding, riveting, interference fit, etc.

[0030] Examples, such as Figure 1-Figure 8As shown, a valve welding device comprises: a transmission mechanism 1, a clamping mechanism 2, a discharging mechanism 3, and a welding mechanism 4; the transmission mechanism 1 is installed on the ground, and the transmission mechanism 1 is used for transporting valves to be welded; the large frame 201 of the clamping mechanism 2 is attached to a predetermined installation area on the ground through a fastening mechanism, and the clamping mechanism 2 is used for taking and fixing the valves to be welded; the lower end surface of the support frame 301 of the discharging mechanism 3 is installed on the ground through screws and nuts, and the discharging mechanism 3 is used for taking and transporting flanges; there are two groups of welding mechanisms 4, and the two groups of welding mechanisms 4 are respectively installed on the lower end surfaces of the horizontal plates of the large frame 201, and the two welding mechanisms 4 can weld the flanges on both sides of the valve at the same time;

[0031] like Figure 4 , Figure 5As shown, the clamping mechanism 2 includes: a bracket 202, a sleeve 203, an electric cylinder I 204, a three-rod frame 205, a limit block 206, a vertical rod 207, a triangular plate 208, a connecting rod 209, and an electric cylinder II 210; the fixed end of the sleeve 203 is fixedly connected to the horizontal plate of the large frame 201, and the piston rod end of the sleeve 203 is fixedly connected to the upper end surface of the bracket 202; the cylinder body of the electric cylinder I 204 is fixedly installed on the horizontal plate of the large frame 201, and the piston rod end of the electric cylinder I 204 is connected to the piston rod end of the sleeve 203 through a plate; the three-rod frame 205 is fixedly installed on the lower end surface of the bracket 202, and the three-rod frame The three rods 205 are respectively provided with grooves; there are three limit blocks 206, which are slidably installed in the grooves on the three rods of the three-rod frame 205; there are three vertical rods 207, and the upper ends of the three vertical rods 207 are respectively fixedly installed on the lower ends of the corresponding three limit blocks 206; the axis of the triangular plate 208 is rotatably installed in the circular hole in the middle position of the three-rod frame 205; there are three connecting rods 209, one end of the three connecting rods 209 is rotatably connected to the outer ends of the three plates on the triangular plate 208, and the other ends of the three connecting rods 209 are respectively rotatably connected to the upper ends of the three limit blocks 206; the electric cylinder The cylinder body of electric cylinder II 210 is fixedly connected to the side of the three-rod frame 205, and the piston tube end of electric cylinder II 210 is fixedly connected to the upper end of a limit block 206; specifically, when the valve to be welded is taken up from the transmission mechanism 1 and fixed to the welding mechanism 4 for welding, the electric cylinder I 204 works first, and the electric cylinder I 204 pushes the piston rod end of the sleeve 203 to move downward, and the piston rod end of the sleeve 203 drives the bracket 202 to move downward, and the bracket 202 drives the three-rod frame 205 to move downward, and the three-rod frame 205 drives the vertical rod 207 to move downward, so that the vertical rod 207 is located on the side of the valve, and then , the electric cylinder II 210 works, the electric cylinder II 210 contracts and drives a limit block 206 to move inward, and then drives the three limit blocks 206 to move inward at the same time, and the three limit blocks 206 drive the three vertical rods 207 to move inward at the same time to clamp the upper end of the valve, and then the electric cylinder I 204 contracts, the electric cylinder I 204 drives the sleeve 203 to contract, the sleeve 203 drives the bracket 202 to move upward, the bracket 202 drives the three-rod frame 205 to move upward, the three-rod frame 205 drives the vertical rod 207 to move upward, and the vertical rod 207 drives the valve clamped by it to move the middle position of the two welding mechanisms 4 to remain fixed.

[0032] like Figure 5 As shown, a clamping groove is provided at the lower end of the vertical rod 207, and the clamping groove can clamp the valve.

[0033] like Figure 6As shown, the discharging mechanism 3 also includes: a storage barrel 302, a top plate I 303, a horizontal plate I 304, a motor I 305, a top rod 306, a Z-shaped rod 307, an electric cylinder III 308, a semi-ring groove 309, a motor II 310, a motor III 311, a cylinder 312, and a small electric cylinder IV 313; the storage barrel 302 is fixedly mounted on the upper end of the support frame 301, a plurality of flanges for welding are placed in the storage barrel 302, and a horizontal groove is provided at the front end of the storage barrel 302; the round rod on the rear side of the top plate I 303 is slidably mounted on the storage barrel The front end of the top plate Ⅰ303 is against the last flange in the storage barrel 302 in the round hole of the rear side plate of the barrel 302; the horizontal plate Ⅰ304 is fixedly installed on the rear side round rod of the top plate Ⅰ303; the top rod 306 is slidably installed in the horizontal groove at the front end of the storage barrel 302, and the rear end of the top rod 306 is provided with a groove; one end of the Z-shaped rod 307 is rotatably installed in the round hole of the side plate of the storage barrel 302, and the other end of the Z-shaped rod 307 slides in the rear end groove of the top rod 306; the motor Ⅰ305 is fixedly installed in the storage barrel The motor shaft is fixedly connected to one end of the Z-shaped rod 307 on the lower end surface of the plate on the side of the support frame 302; the cylinder body of the electric cylinder III 308 is slidably installed on the side panel of the support frame 301, and the piston rod end of the electric cylinder III 308 is fixedly connected to the semi-annular groove 309, and a clamping plate is slidably installed on the semi-annular groove 309. In the initial position, the semi-annular groove 309 is located on the side of the front end transverse groove of the storage barrel 302, and the front end top plate of the push rod 306 can push the flange into the semi-annular groove 309; the cylinder body of the small electric cylinder IV 313 is fixedly installed on On the semi-annular groove 309, the piston rod end of the small electric cylinder IV 313 is fixedly connected to the clamping plate slidably installed in the semi-annular groove 309. When the small electric cylinder IV 313 works, it can push the clamping plate to clamp the flange entering the semi-annular groove 309; the motor II 310 is fixedly installed on the plate on the side of the support frame 301, and its motor shaft is fixedly connected to a cam, and this cam is in contact with the lower end vertical plate of the cylinder body of the electric cylinder III 308; the motor III 311 is fixedly installed on the storage barrel 302, and its motor shaft is fixedly connected to the cylinder 312;Specifically, after the valve moves to the welding mechanism 4, flanges need to be welded on both sides of the valve. At this time, a flange needs to be taken out and moved to the side of the valve to be buckled with the valve and wait for welding. Multiple flanges are located in the storage barrel 302 and are pushed tightly from the back by the top plate I 303. At this time, the front flange is located in the front end groove of the storage barrel 302. When taking this flange, the motor I 305 is started to drive the Z-shaped rod 307 to rotate, and the Z-shaped rod 307 drives the push rod 306 to move back and forth. When the push rod 306 moves forward, the top plate at the front end of the push rod 306 can push out the flange located in the front end groove of the storage barrel 302 and push it into the semi-annular groove 309. At this time, the camera 401 observes the holes on the flanges that need to be welded on both sides of the valve, and transmits the information to the motor III 311. After the motor III 311 receives the information, the motor III 311 is started to drive the cylinder 3 12 rotates, and the cylinder 312 drives the flange moved into the semi-ring groove 309 to rotate, aligning the holes on the two flanges to be welded. Then, the small electric cylinder IV 313 works, and the small electric cylinder IV 313 pushes the semi-ring groove 309 clamping plate to clamp the flange. Then, the electric cylinder III 308 works, and the electric cylinder III 308 pushes the semi-ring groove 309 to move to the side of the valve, and the flange clamped by the semi-ring groove 309 is buckled with the side of the valve, and then the valve and the flange are welded. After the welding is completed, the small electric cylinder IV 313 shrinks and relaxes the clamping work of the flange in the semi-ring groove 309. Then, the motor II 310 starts, driving the cam on its motor shaft to rotate, and the cam pushes the electric cylinder III 308 outward. At this time, the electric cylinder III 308 drives the semi-ring groove 309 to move outward. When the semi-ring groove 309 is separated from the welded flange, the electric cylinder III 308 shrinks and drives the semi-ring groove 309 back to its original position, waiting for the next flange to be taken. ;

[0034] like Figure 6 As shown, springs are provided on both sides of the horizontal plate Ⅰ 304 , and the other ends of the springs are respectively connected to the two side plates of the storage barrel 302 .

[0035] like Figure 6 As shown, a top plate is fixedly installed at the front end of the push rod 306, and the top plate can push out the flange moved into the front end transverse groove of the storage barrel 302.

[0036] like Figure 6 As shown, a vertical plate is fixedly installed at the lower end of the cylinder body of the electric cylinder III 308 , a spring is installed on the vertical plate, and the other end of the spring is connected to the support frame 301 .

[0037] like Figure 6 As shown, the outer surface of the cylinder 312 is a frosted surface, and the cylinder 312 contacts the side edge of the flange moved into the semi-annular groove 309. The cylinder 312 can drive the flange in contact with it to rotate.

[0038] like Figure 7 , Figure 8 As shown, the welding mechanism 4 includes: a camera 401, a semi-ring frame 402, a semi-ring plate 403, a gear I 404, a welding machine 405, and a motor IV 406; the camera 401 is fixedly mounted on the lower end surface of the horizontal plate of the large frame 201, and the camera 401 can observe the holes on the flanges on both sides of the valve that need to be welded, and transmit the information to the motor III 311, and the motor III 311 starts after receiving the information, drives the cylinder 312 to rotate, and the cylinder 312 drives the corresponding flange to rotate, and aligns the holes on the two flanges that need to be welded; the semi-ring frame 402 is fixedly mounted on the lower end surface of the horizontal plate of the large frame 201; the semi-ring plate 403 is rotatably mounted on the semi-ring frame 402, and the periphery of the semi-ring plate 403 is provided with gear teeth; there are two gears I 404, and the shafts of the two gears I 404 are divided into The two gears I404 are rotatably mounted in two circular holes on the semi-ring frame 402, and the two gears I404 are located on both sides of the semi-ring plate 403, and the two gears I404 are meshed with the gear teeth on the periphery of the semi-ring plate 403; the welding machine 405 is fixedly mounted on the semi-ring plate 403, and the welding machine 405 can weld the valve and the flange; the motor IV406 is fixedly mounted on the side of the semi-ring frame 402, and its motor shaft is respectively connected to the shafts of the two gears I404 through a synchronous belt; specifically, when the valve and the flange are welded together, the motor IV406 is started, driving the two gears I404 to rotate, and the two gears I404 drive the semi-ring plate 403 to rotate around the valve, and the semi-ring plate 403 drives the welding machine 405 to rotate around the valve while welding, so that the valve and the flange are welded together.

[0039] Working principle: The equipment can automatically clamp and fix the valve when welding the flange and the valve, which is convenient for the equipment to weld and effectively improves the welding accuracy; the equipment can weld the flanges on both sides of the valve at the same time, effectively improving the work efficiency; the equipment can automatically pick up and transport the flange, saving manpower and material resources;

[0040] When welding the valve, first, the transmission mechanism 1 transports the valve to be welded to the bottom of the clamping mechanism 2, then, the valve to be welded is picked up from the transmission mechanism 1 and fixed to the welding mechanism 4 for welding, first, the electric cylinder I 204 works, the electric cylinder I 204 pushes the piston rod end of the sleeve 203 to move downward, the piston rod end of the sleeve 203 drives the bracket 202 to move downward, the bracket 202 drives the three-rod frame 205 to move downward, the three-rod frame 205 drives the vertical rod 207 to move downward, so that the vertical rod 207 is located on the side of the valve, then, the electric cylinder II 210 works The electric cylinder II 210 contracts and drives a limit block 206 to move inward, and then drives three limit blocks 206 to move inward at the same time. The three limit blocks 206 drive three vertical rods 207 to move inward at the same time to clamp the upper end of the valve. Then the electric cylinder I 204 contracts, and the electric cylinder I 204 drives the sleeve 203 to contract. The sleeve 203 drives the bracket 202 to move upward. The bracket 202 drives the three-rod frame 205 to move upward. The three-rod frame 205 drives the vertical rod 207 to move upward. The vertical rod 207 drives the valve clamped by it to move. The middle position of the two welding mechanisms 4 remains fixed;

[0041] Then, flanges need to be welded on both sides of the valve. At this time, one flange needs to be taken out and moved to the side of the valve to be buckled with the valve and wait for welding. When taking it out, multiple flanges are located in the storage barrel 302 and are pushed tightly from the back by the top plate I 303. At this time, the front flange is located in the front end groove of the storage barrel 302. When taking this flange, the motor I 305 is started to drive the Z-shaped rod 307 to rotate, and the Z-shaped rod 307 drives the push rod 306 to move back and forth. When the push rod 306 moves forward, the top plate at the front end of the push rod 306 can push out the flange located in the front end groove of the storage barrel 302 and push it into the semi-annular groove 309. Then, the Z-shaped rod 307 continues to work, driving the top plate at the front end of the push rod 306 to move to the right side of the storage barrel 302. At this time, due to the spring action on both sides of the cross plate I 304, the top plate I 3 03 automatically pushes forward to move the next flange into the horizontal groove at the front end of the storage barrel 302. When the previous flange is pushed into the semi-ring groove 309, the cylinder 312 contacts the side edge of the flange. At this time, the camera 401 observes the holes on the flanges on both sides of the valve that need to be welded, and transmits the information to the motor III 311. After receiving the information, the motor III 311 starts to drive the cylinder 312 to rotate. The cylinder 312 drives the flange moved into the semi-ring groove 309 to rotate, and aligns the holes on the two flanges that need to be welded. Then, the small electric cylinder IV 313 works, and the small electric cylinder IV 313 pushes the clamping plate in the semi-ring groove 309 to clamp the flange. Then, the electric cylinder III 308 works, and the electric cylinder III 308 pushes the semi-ring groove 309 to move to the side of the valve, and snaps the flange clamped by the semi-ring groove 309 with the side of the valve, waiting for welding.

[0042] When the valve and the flange are welded together, the motor IV 406 is started to drive the two gears I 404 to rotate, and the two gears I 404 drive the semi-ring plate 403 to rotate around the valve, and the semi-ring plate 403 drives the welding machine 405 to rotate around the valve while welding, so that the valve and the flange are welded together;

[0043] After welding is completed, the small electric cylinder IV 313 contracts to loosen the clamping work on the flange in the semi-annular groove 309. Then, the motor II 310 starts to drive the cam on its motor shaft to rotate. The cam pushes the electric cylinder III 308 outward. At this time, the electric cylinder III 308 drives the semi-annular groove 309 to move outward. When the semi-annular groove 309 is separated from the welded flange, the electric cylinder III 308 contracts to drive the semi-annular groove 309 back to its original position, waiting for the next flange to be taken.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve welding device, characterized in that: include: A transmission mechanism (1), a clamping mechanism (2), a discharging mechanism (3), and a welding mechanism (4); the transmission mechanism (1) is installed on the ground, and the transmission mechanism (1) is used for transporting valves that need to be welded; a large frame (201) of the clamping mechanism (2) is attached to a predetermined installation area on the ground by a fastening mechanism, and the clamping mechanism (2) is used for taking and fixing valves that need to be welded; the lower end surface of the support frame (301) of the discharging mechanism (3) is installed on the ground by screws and nuts, and the discharging mechanism (3) is used for taking and transporting flanges; there are two groups of welding mechanisms (4), and the two groups of welding mechanisms (4) are respectively installed on the lower end surfaces of the horizontal plate of the large frame (201), and the two welding mechanisms (4) can simultaneously weld the flanges on both sides of the valve; The clamping mechanism (2) comprises: a bracket (202), a sleeve (203), an electric cylinder I (204), a three-rod frame (205), a limit block (206), a vertical rod (207), a triangular plate (208), a connecting rod (209), and an electric cylinder II (210); the fixed end of the sleeve (203) is fixedly connected to the horizontal plate of the large frame (201), and the piston rod end of the sleeve (203) is fixedly connected to the upper end surface of the bracket (202); the cylinder body of the electric cylinder I (204) is fixedly mounted on the horizontal plate of the large frame (201), and the piston rod end of the electric cylinder I (204) is connected to the piston rod end of the sleeve (203) through a plate; the three-rod frame (205) is fixedly mounted on the lower end surface of the bracket (202), and grooves are respectively provided on the three rods of the three-rod frame (205); the limit block (2 06), the three limit blocks (206) are respectively slidably mounted in the grooves on the three rods of the three-rod frame (205); there are three vertical rods (207), the upper ends of the three vertical rods (207) are respectively fixedly mounted on the lower ends of the corresponding three limit blocks (206); the axis of the triangular plate (208) is rotatably mounted in the circular hole in the middle position of the three-rod frame (205); there are three connecting rods (209), one end of the three connecting rods (209) is respectively rotatably connected to the outer ends of the three plates on the triangular plate (208), and the other ends of the three connecting rods (209) are respectively rotatably connected to the upper ends of the three limit blocks (206); the cylinder body of the electric cylinder II (210) is fixedly connected to the side of the three-rod frame (205), and the piston tube end of the electric cylinder II (210) is fixedly connected to the upper end of a limit block (206); A slot is provided at the lower end of the vertical rod (207); The discharging mechanism (3) further comprises: a material storage barrel (302), a top plate I (303), a horizontal plate I (304), a motor I (305), a top rod (306), a Z-shaped rod (307), an electric cylinder III (308), a semi-annular groove (309), a motor II (310), a motor III (311), a cylinder (312), and a small electric cylinder IV (313); the material storage barrel (302) is fixedly mounted on the upper end of the support frame (301), and a horizontal groove is provided at the front end of the material storage barrel (302); the top plate I (303) The round rod at the rear side is slidably mounted in the round hole of the rear side plate of the storage barrel (302), and the front end of the top plate I (303) is against the last flange in the storage barrel (302); the horizontal plate I (304) is fixedly mounted on the round rod at the rear side of the top plate I (303); the top rod (306) is slidably mounted in the horizontal groove at the front end of the storage barrel (302), and the rear end of the top rod (306) is provided with a groove; one end of the Z-shaped rod (307) is rotatably mounted in the round hole of the side plate of the storage barrel (302), and the other end of the Z-shaped rod (307) is in the top plate. The rear end groove of the rod (306) slides; the motor I (305) is fixedly mounted on the lower end surface of the plate on the side of the storage barrel (302), and its motor shaft is fixedly connected to one end of the Z-shaped rod (307); the cylinder body of the electric cylinder III (308) is slidably mounted on the side plate of the support frame (301), and the piston rod end of the electric cylinder III (308) is fixedly connected to the semi-annular groove (309), and a clamping plate is slidably mounted on the semi-annular groove (309). In the initial position, the semi-annular groove (309) is located on the side of the transverse groove at the front end of the storage barrel (302). The cylinder body of the small electric cylinder IV (313) is fixedly mounted on the semi-annular groove (309), and the piston rod end of the small electric cylinder IV (313) is fixedly connected to a card plate slidably mounted in the semi-annular groove (309); the motor II (310) is fixedly mounted on a plate on the side of the support frame (301), and its motor shaft is fixedly connected to a cam, and the cam is in contact with the lower end vertical plate of the cylinder body of the electric cylinder III (308); the motor III (311) is fixedly mounted on the storage barrel (302), and its motor shaft is fixedly connected to the cylinder (312); Springs are provided on both sides of the horizontal plate I (304), and the other ends of the springs are respectively connected to the two side plates of the storage barrel (302); A top plate is fixedly mounted on the front end of the top rod (306); A vertical plate is fixedly mounted on the lower end of the cylinder body of the electric cylinder III (308), a spring is mounted on the vertical plate, and the other end of the spring is connected to the support frame (301); The outer surface of the cylinder (312) is a frosted surface, and the cylinder (312) contacts the side edge of the flange moved into the semi-annular groove (309); The welding mechanism (4) comprises: a camera (401), a semi-ring frame (402), a semi-ring plate (403), a gear I (404), a welding machine (405), and a motor IV (406); the camera (401) is fixedly mounted on the lower end surface of the horizontal plate of the large frame (201); the semi-ring frame (402) is fixedly mounted on the lower end surface of the horizontal plate of the large frame (201); the semi-ring plate (403) is rotatably mounted on the semi-ring frame (402), and the outer periphery of the semi-ring plate (403) is provided with gear teeth; the gear I (404) 04), the shafts of the two gears I (404) are rotatably mounted in the two circular holes on the semi-ring frame (402), and the two gears I (404) are located on both sides of the semi-ring plate (403), and the two gears I (404) are meshed with the gear teeth on the outer periphery of the semi-ring plate (403); the welding machine (405) is fixedly mounted on the semi-ring plate (403); the motor IV (406) is fixedly mounted on the side of the semi-ring frame (402), and its motor shaft is connected to the shafts of the two gears I (404) through a synchronous belt.

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