Double chuck clamping device for valve core and valve seat welding

Abstract

This invention relates to the field of double-clamping device technology, and discloses a double-clamping device for welding valve cores and seats. The device includes a worktable, a fixing device, a cleaning device, and a lubrication device on the top of the worktable. The fixing device includes a motor, a support plate, a reciprocating screw, a moving plate, a fixed plate, a semi-circular clamp, a moving rod, a sleeve, a triangular chuck, and a clamping block. The support plate is fixedly connected to the right side of the worktable, and the motor is fixedly connected to the left side of the support plate. This invention uses the moving semi-circular clamp to clamp and fix the circumferential surface of the valve seat, precisely fixing the valve core and valve seat in the designed position, ensuring accurate relative positioning between them. This ensures that the valve can open and close normally after processing, effectively controlling the flow and pressure of the fluid.

Description

Technical Field

[0001] This invention relates to the field of double-clamping device technology, specifically a double-clamping device for welding valve cores and seats. Background Technology

[0002] The valve core and valve seat are key components of a valve, and their sealing performance directly affects the valve's performance. Welding can firmly connect the valve core and valve seat together, ensuring that their relative positions remain stable under various operating conditions, such as high pressure, high temperature, and corrosive environments. This prevents leakage problems caused by loosening or displacement, thereby ensuring good valve sealing performance and achieving effective fluid control. The materials of the valve core and valve seat need to be strictly inspected to ensure that they meet design requirements and are free from defects such as cracks and pores. For some special materials, such as stainless steel and alloy steel, surface cleaning and pretreatment may be required to remove impurities such as oil and oxide layers to improve welding quality.

[0003] Patent CN118180757A relates to the field of welding processing technology, specifically to a welding clamping device with adjustable clamping height. The device includes a base, multiple support columns, and two adjustment mechanisms. The adjustment mechanisms are located on both sides of the base and include a mounting plate, a lead screw, a moving block, a mounting frame, a fixed plate, a drive assembly, and a clamping assembly. The mounting plate has a through slot. The multiple support columns are fixedly connected to the base and located below it. The drive assembly is mounted on the mounting frame. The lead screw is fixedly connected to the output end of the drive assembly and extends into the mounting frame. The moving block is threadedly connected to the lead screw. The fixed plate is fixedly connected to the moving block. The clamping assembly is mounted on the fixed plate. The two clamping assemblies fix two pieces of steel. Activating the two drive assemblies adjusts the height of the steel until it is moved to a height convenient for the worker to weld, thereby improving the worker's processing efficiency.

[0004] During the use of the above-mentioned device, the fitting accuracy between the valve core and the valve seat is required to be very high. If displacement occurs during the welding process, it will lead to a deterioration in the concentricity, perpendicularity and other positional accuracy of the valve core and the valve seat, which will affect the sealing performance and fluid control accuracy of the valve. Therefore, a double-clamping device for valve core and valve seat welding is proposed to solve the above-mentioned problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a double-clamping device for welding valve core and valve seat, which addresses the shortcomings of the prior art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a double-clamping device for welding valve cores and seats, comprising a worktable, a fixing device, a cleaning device, and a lubrication device on the top of the worktable; the fixing device includes a motor, a support plate, a reciprocating screw, a moving plate, a fixed plate, a semi-circular clamp, a moving rod, a sleeve, a triangular chuck, and a clamping block; the support plate is fixedly connected to the right side of the worktable, and the motor is fixedly connected to the left side of the support plate. On one side, the reciprocating screw is fixedly connected to the output end of the motor, the moving plate is movably connected to the circumferential surface of the reciprocating screw, the fixed plate is fixedly connected to the top of the moving plate, and the semi-circular clamp is fixedly connected to the front of the fixed plate. The movement of the fixed plate drives the semi-circular clamp to move, thereby clamping and fixing the circumferential surface of the valve seat. Because the fitting precision requirements between the valve core and the valve seat are very high, if displacement occurs during the welding process, it will cause the concentricity, perpendicularity, and other positional accuracy of the valve core and valve seat to exceed the tolerance, affecting the sealing performance and fluid flow of the valve. To control precision, the valve core and valve seat can be precisely fixed in the designed position through clamping and fixing, ensuring accurate relative positioning between them. This ensures that the valve can open and close normally after processing, effectively controlling the flow and pressure of the fluid. The sleeve is fixedly connected to the top of the workbench, the moving rod is slidably connected to the inner wall of the sleeve, the triangular chuck is installed on the inner wall of the sleeve, the clamping block is installed on the top of the triangular chuck, and the bottom of the clamping block is in contact with the top of the sleeve. The outer wall of the fixing plate is... The reciprocating screw is in contact with the inner wall of the workbench. The circumferential surface of the reciprocating screw is rotatably connected to the inner wall of the support plate. The top of the moving plate is in contact with the top of the workbench. The rotation of the triangular chuck causes the clamping block to be limited by the slot on the triangular chuck, so that the clamping block moves and fixes the bottom of the valve seat. After the valve core and valve seat are reliably clamped and fixed, the welder can perform welding operations more conveniently without worrying about the position of the workpiece. He can focus more on the control of welding process parameters and the formation of weld, thereby improving welding speed and work efficiency.

[0007] Preferably, the cleaning device includes a second movable rod, a sliding rod, a sliding groove plate, a second fixed plate, a first spring telescopic column, a scraper, a collection box, an L-shaped plate, a second spring telescopic column, a movable column, a first connecting plate, and a second connecting plate. The second connecting plate is fixedly connected to the inner wall of the first fixed plate, the second movable rod is fixedly connected to the left side of the first connecting plate, the sliding rod is fixedly connected to the bottom of the second movable rod, the sliding groove plate contacts the worktable, the second fixed plate is fixedly connected to the top of the worktable, the first spring telescopic column is fixedly connected to the rear of the second fixed plate, and the scraper is fixedly connected to the rear of the sliding groove plate. The scraper cleans up the fallen welding slag, making the clamping assembly move more smoothly during clamping and preventing welding slag from affecting the clamping effect on the worktable. At the same time, welding slag can damage the continuity and density of the weld, reducing its strength and toughness, and making the weld susceptible to damage under pressure or vibration. Cracks are easily generated, which affects the sealing performance and service life of the valve core and seat. Timely cleaning of welding slag can effectively prevent the formation of slag inclusions and ensure the quality of the weld. The collection box is fixedly connected to the bottom of the workbench. The L-shaped plate is fixedly connected to the left side of the connecting plate two. The spring telescopic column two is fixedly connected to the inner wall of the collection box. The moving column is fixedly connected to the right side of the L-shaped plate. The connecting plate one is fixedly connected to the right side of the moving column. The connecting plate one is in contact with the inner wall of the collection box. The spring telescopic column one is fixedly connected to the left side of the connecting plate one. The circumferential surface of the slide rod is slidably connected to the inner wall of the slide plate. The bottom of the scraper is in contact with the top of the workbench. The connecting plate one moves and is reset by the spring telescopic column two. The movement of the connecting plate one pushes the welding slag on the left and right sides to the middle of the collection box, reducing the area occupied by the welding slag and allowing the collection box to hold more welding slag.

[0008] Preferably, the lubrication device includes a friction plate, a roller, an oil drum, a spring telescopic column three, a support plate two, a hinge plate, and a sliding plate. The friction plate is fixedly connected to the right side of the connecting plate two, the roller contacts the friction plate, the oil drum is fixedly installed on the top of the workbench, the spring telescopic column three is fixedly connected to the inner wall of the oil drum, the sliding plate is slidably connected to the inner wall of the oil drum, the support plate two is fixedly connected to the front of the sliding plate, and the hinge plate is hinged to the inner wall of the support plate two via a connecting rod. The lubrication device also includes a push plate, a reciprocating screw two, a support plate three, a stirring plate, a float plate, and a telescopic plate. The reciprocating screw two is fixedly connected to the front of the roller, the push plate is movably connected to the circumferential surface of the reciprocating screw two, and the support plate three is fixedly connected to the push plate three. At the rear of the plate, the push plate moves, causing the support plate three to move. The support plate three moves, causing the hinge plate to move. The hinge plate moves, causing the slide plate to move to the left. The spring telescopic column three resets the slide plate. At this time, the slide plate is in the open state shown in the figure. Lubricating oil is evenly applied to the groove of the clamping assembly of the workbench to prevent jamming during clamping. The stirring plate is fixedly connected to the circumferential surface of the reciprocating screw two. The float plate is in contact with the inner wall of the oil drum. The telescopic plate is fixedly connected to the top of the float plate. The top of the push plate is in contact with the inner wall of the oil drum. The right side of the spring telescopic column three is fixedly connected to the left side of the slide plate. The float plate moves up and down, causing the telescopic plate to move up and down. The up and down movement of the telescopic plate can indicate how much lubricating oil is left in the oil drum, which is convenient for the staff to quickly change it.

[0009] The present invention, by adopting the above technical solution, can bring the following beneficial effects:

[0010] 1. This double-clamping device for welding valve core and valve seat utilizes the interaction of a motor, a support plate, a reciprocating screw, a moving plate, a fixed plate, a semi-circular clamp, a moving rod, a sleeve, a triangular chuck, and clamping blocks. The movement of the fixed plate moves the semi-circular clamp, which clamps and fixes the circumference of the valve seat. Because the fit between the valve core and valve seat requires high precision, any displacement during welding will cause deviations in the concentricity and perpendicularity of the valve core and valve seat, affecting the valve's sealing performance and fluid control accuracy. This clamping fixation effectively secures the valve core and valve seat. The valve seat is precisely fixed in the designed position, ensuring accurate relative positioning between the two parts. This ensures that the valve can open and close normally after processing, effectively controlling the flow and pressure of the fluid. The rotation of the triangular chuck causes the clamping block to be limited by the groove on the triangular chuck, allowing the clamping block to move and fix the bottom of the valve seat. Once the valve core and valve seat are reliably clamped and fixed, the welder can perform welding operations more conveniently without worrying about the position of the workpiece. This allows the welder to focus more on controlling the welding process parameters and forming the weld, thereby improving welding speed and work efficiency.

[0011] 2. This double-clamping device for welding valve cores and seats works in conjunction with a moving rod, a sliding rod, a sliding groove plate, a fixed plate, a spring telescopic column, a scraper, a collection box, an L-shaped plate, a spring telescopic column, a moving column, a connecting plate, and a connecting plate. The scraper cleans up fallen welding slag, making the clamping components move more smoothly during clamping and preventing welding slag from falling onto the worktable and affecting the clamping effect. At the same time, welding slag can damage the continuity and density of the weld, reduce the strength and toughness of the weld, and make the weld prone to cracking under pressure or vibration, thus affecting the sealing performance and service life of the valve core and seat. Timely cleaning of welding slag can effectively prevent the formation of slag inclusions and ensure weld quality. The movement of the connecting plate is reset by the spring telescopic column. The movement of the connecting plate pushes the welding slag on the left and right sides into the middle of the collection box, reducing the area occupied by welding slag and allowing the collection box to hold more welding slag.

[0012] 3. The valve core and seat are welded using a double-clamping device. This device works in conjunction with a friction plate, rollers, oil drum, spring telescopic column three, support plate two, hinge plate, push plate, support plate three, reciprocating screw two, stirring plate, float plate, telescopic plate, and sliding plate. The push plate moves, causing support plate three to move; support plate three moves, causing hinge plate to move; hinge plate moves, causing sliding plate to move to the left. Spring telescopic column three then resets it, placing the sliding plate in the open position. This allows lubricating oil to be evenly applied to the grooves of the clamping components on the worktable, preventing jamming during clamping. The float plate's up-and-down movement causes the telescopic plate to move up and down, displaying the remaining lubricating oil in the oil drum for quick replacement. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 This is a schematic diagram of the fixing device of the present invention;

[0015] Figure 3 This is a schematic diagram of the cleaning device of the present invention;

[0016] Figure 4 For the present invention Figure 3 Enlarged view of the structure at point A in the middle;

[0017] Figure 5 For the present invention Figure 3 Enlarged view of the structure at point B in the middle;

[0018] Figure 6 This is a schematic diagram of the lubrication device of the present invention;

[0019] Figure 7 For the present invention Figure 6 Enlarged view of the structure at point C.

[0020] In the diagram: 1. Workbench; 2. Fixing device; 201. Motor; 202. Support plate one; 203. Reciprocating lead screw one; 204. Moving plate; 205. Fixing plate one; 206. Semi-circular clamp; 207. Moving rod one; 208. Sleeve; 209. Triangular chuck; 210. Clamping block; 3. Cleaning device; 301. Moving rod two; 302. Slide rod; 303. Slide plate; 304. Fixing plate two; 305. Spring telescopic column one; 306. Scraper; 307. 308. Collection box; 309. L-shaped plate; 310. Spring telescopic column II; 311. Moving column; 312. Connecting plate I; 313. Connecting plate II; 4. Lubrication device; 401. Friction plate; 402. Roller; 403. Oil drum; 404. Spring telescopic column III; 405. Support plate II; 406. Hinge plate; 407. Push plate; 408. Support plate III; 409. Reciprocating screw II; 410. Stirring plate; 411. Float plate; 412. Telescopic plate; 413. Slide plate. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-7One embodiment of the present invention is: a double-clamping device for welding valve cores and seats, comprising a workbench 1, a fixing device 2, a cleaning device 3, and a lubrication device 4 on the top of the workbench 1; the fixing device 2 includes a motor 201, a support plate 202, a reciprocating screw 203, a moving plate 204, a fixing plate 205, a semi-circular clamp 206, a moving rod 207, a sleeve 208, a triangular chuck 209, and a clamping block 210; the support plate 202 is fixedly connected to the right side of the workbench 1, the motor 201 is fixedly connected to the left side of the support plate 202, and the reciprocating screw 203 is fixedly connected to the output end of the motor 201; the moving plate 204 is fixedly connected to the right side of the workbench 1, the motor 201 is fixedly connected to the left side of the support plate 202, and the reciprocating screw 203 is fixedly connected to the output end of the motor 201; the moving plate 205 is fixedly connected to the right side of the workbench 1, the supporting plate 206, the moving rod 207, the semi-circular clamp 208, the moving rod 209, and the moving rod 210. The movable plate 204 is movably connected to the circumferential surface of the reciprocating lead screw 203. The fixed plate 205 is fixedly connected to the top of the movable plate 204, and the semicircular clamp 206 is fixedly connected to the front of the fixed plate 205. When the device is started, the motor 201 drives the reciprocating lead screw 203 to rotate. The rotation of the reciprocating lead screw 203 drives the movable plate 204 to move. The movement of the movable plate 204 drives the fixed plate 205 to move. The movement of the fixed plate 205 drives the semicircular clamp 206 to move. The movement of the semicircular clamp 206 clamps and fixes the circumferential surface of the valve seat. Because the fitting precision requirements between the valve core and the valve seat are very high, if displacement occurs during the welding process, it will cause the concentricity, perpendicularity, and other positional accuracy of the valve core and the valve seat to exceed the limit. Poor sealing performance affects the valve's sealing performance and fluid control accuracy. Clamping and fixing allows the valve core and seat to be precisely fixed in the designed positions, ensuring accurate relative positioning and guaranteeing proper opening and closing of the valve after processing, effectively controlling fluid flow and pressure. The sleeve 208 is fixedly connected to the top of the workbench 1. The moving rod 207 is slidably connected to the inner wall of the sleeve 208. The triangular chuck 209 is installed on the inner wall of the sleeve 208, and the clamping block 210 is installed on the top of the triangular chuck 209. The bottom of the clamping block 210 contacts the top of the sleeve 208. The outer wall of the fixing plate 205 contacts the inner wall of the workbench 1. The reciprocating screw 2... The circumferential surface of 03 is rotatably connected to the inner wall of the support plate 202. The top of the moving plate 204 is in contact with the top of the workbench 1. When the semicircular clamp 206 moves, it contacts the moving rod 207. After the moving rod 207 contacts, it drives the triangular chuck 209 to rotate inside the sleeve 208. The rotation of the triangular chuck 209 causes the clamping block 210 to be limited by the slot on the triangular chuck 209. This causes the clamping block 210 to move and fix the bottom of the valve seat. When the valve core and valve seat are reliably clamped and fixed, the welder can perform welding operations more conveniently without worrying about the position of the workpiece. He can focus more on the control of welding process parameters and the formation of the weld, thereby improving welding speed and work efficiency.

[0023] Working principle: When the device is started, motor 201 drives reciprocating screw 203 to rotate. The rotation of reciprocating screw 203 drives moving plate 204 to move, which in turn drives fixed plate 205 to move. The movement of fixed plate 205 drives semi-circular clamp 206 to move. The movement of semi-circular clamp 206 clamps and fixes the circumferential surface of the valve seat. Because the fitting precision requirements between the valve core and valve seat are very high, if displacement occurs during the welding process, it will cause the concentricity, perpendicularity, and other positional accuracy of the valve core and valve seat to exceed the tolerance, affecting the sealing performance and fluid control accuracy of the valve. By clamping and fixing, the valve core and valve seat can be precisely fixed in the design-required position, ensuring the relative position between them. Accuracy ensures that the valve can open and close normally after processing, effectively controlling the flow and pressure of the fluid. When the semi-circular clamp 206 moves, it contacts the moving rod 207, causing the moving rod 207 to rotate inside the sleeve 208. The rotation of the triangular chuck 209 causes the clamping block 210 to be limited by the groove on the triangular chuck 209, allowing the clamping block 210 to move and fix the bottom of the valve seat. When the valve core and valve seat are reliably clamped and fixed, the welder can perform welding operations more conveniently without worrying about the position of the weldment. He can focus more on the control of welding process parameters and the formation of the weld, thereby improving welding speed and work efficiency.

[0024] Please see Figures 1-7Based on the above embodiments, in another embodiment of the present invention, the cleaning device 3 includes a second movable rod 301, a sliding rod 302, a chute plate 303, a second fixed plate 304, a first spring telescopic column 305, a scraper 306, a collection box 307, an L-shaped plate 308, a second spring telescopic column 309, a movable column 310, a first connecting plate 311, and a second connecting plate 312. The second connecting plate 312 is fixedly connected to the inner wall of the first fixed plate 305. The second movable rod 301 is fixedly connected to the left side of the first connecting plate 311. The sliding rod 302 is fixedly connected to the bottom of the second movable rod 301. The chute plate 303 contacts the workbench 1. The second fixed plate 304 is fixedly connected to the top of the workbench 1. The spring telescopic column... A 305 is fixedly connected to the rear of a fixed plate 304, and a scraper 306 is fixedly connected to the rear of a sliding plate 303. When the device is started, the movement of the fixed plate 305 moves the connecting plate 312, which in turn moves the moving rod 301, which in turn moves the sliding rod 302. The sliding rod 302, through the compression of the sliding groove, causes the sliding plate 303 to move, which in turn moves the scraper 306. The scraper 306 pushes the fallen welding slag into the collection box 307 for collection. The scraper 306 is reset by the spring telescopic column 305. The scraper 306 cleans up the fallen welding slag, allowing the clamping assembly to move during clamping. The movement is smoother, and the clamping effect will not be affected by welding slag falling on the workbench 1. At the same time, welding slag will destroy the continuity and density of the weld, reduce the strength and toughness of the weld, and make the weld prone to cracking when subjected to pressure or vibration, thus affecting the sealing performance and service life of the valve core and valve seat. Timely cleaning of welding slag can effectively prevent the formation of slag inclusions and ensure the quality of the weld. The collection box 307 is fixedly connected to the bottom of the workbench 1, the L-shaped plate 308 is fixedly connected to the left side of the connecting plate 312, the spring telescopic column 309 is fixedly connected to the inner wall of the collection box 307, the moving column 310 is fixedly connected to the right side of the L-shaped plate 308, the connecting plate 311 is fixedly connected to the right side of the moving column 310, and the connecting plate 311 is fixedly connected to the right side of the moving column 310. 11 is in contact with the inner wall of the collection box 307. The spring telescopic column 305 is fixedly connected to the left side of the connecting plate 311. The circumferential surface of the slide rod 302 is slidably connected to the inner wall of the slide plate 303. The bottom of the scraper 306 is in contact with the top of the workbench 1. The movement of the connecting plate 311 drives the L-shaped plate 308 to move. The movement of the L-shaped plate 308 drives the moving column 310 to move. The movement of the moving column 310 drives the connecting plate 311 to move. The movement of the connecting plate 311 resets the spring telescopic column 309. The movement of the connecting plate 311 pushes the welding slag on the left and right sides to the middle of the collection box 307, reducing the area occupied by the welding slag, so that the collection box 307 can hold more welding slag.

[0025] The lubrication device 4 includes a friction plate 401, a roller 402, an oil drum 403, a spring telescopic column 3 404, a support plate 2 405, a hinge plate 406, and a sliding plate 413. The friction plate 401 is fixedly connected to the right side of the support plate 2 312. The roller 402 is in contact with the friction plate 401. The oil drum 403 is fixedly installed on the top of the workbench 1. The spring telescopic column 3 404 is fixedly connected to the inner wall of the oil drum 403. The sliding plate 413 is slidably connected to the inner wall of the oil drum 403. The movement of the support plate 2 312 drives the friction plate 401 to move. The movement of the friction plate 401 is driven by friction. Roller 402 rotates, driving reciprocating screw 409 to rotate. Reciprocating screw 409 moves push plate 407, which in turn moves support plate 408. Support plate 408 moves hinge plate 406, which in turn moves slide plate 413 to the left. Spring telescopic column 404 resets slide plate 413, placing it in the open position. Lubricating oil is evenly applied to the groove of the clamping assembly on worktable 1 to prevent jamming during clamping. Simultaneously, the rotation of reciprocating screw 409 drives the stirring plate 410 to rotate. The push plate 407 moves and the stirring plate 410 rotates, stirring the lubricating oil in the oil tank 403 to prevent the lubricating oil from solidifying and affecting its lubrication effect. The second support plate 405 is fixedly connected to the front of the slide plate 413. The hinge plate 406 is hinged to the inner wall of the second support plate 405 through a connecting rod. The lubrication device 4 also includes a push plate 407, a third support plate 408, a second reciprocating screw 409, a stirring plate 410, a float plate 411, and a telescopic plate 412. The second reciprocating screw 409 is fixedly connected to the front of the roller 402. The push plate 407 is movably connected to the circumferential surface of the second reciprocating screw 409. The third screw 408 is fixedly connected to the rear of the push plate 407. The stirring plate 410 is fixedly connected to the circumferential surface of the reciprocating screw 409. The float plate 411 is in contact with the inner wall of the oil drum 403. The telescopic plate 412 is fixedly connected to the top of the float plate 411. The top of the push plate 407 is in contact with the inner wall of the oil drum 403. The right side of the spring telescopic column 404 is fixedly connected to the left side of the slide plate 413. The telescopic plate 412 moves up and down by the up and down movement of the float plate 411. The up and down movement of the telescopic plate 412 can display how much lubricating oil is left in the oil drum 403, which is convenient for the staff to quickly replace it.

[0026] Working principle: When the device is started, the movement of the fixed plate 205 drives the movement of the connecting plate 312, which in turn drives the movement rod 301, which in turn drives the slide rod 302. The movement of the slide rod 302, through the compression of the slide groove, causes the slide plate 303 to move. The movement of the slide plate 303 drives the scraper 306 to move, pushing the fallen welding slag into the collection box 307 for collection. The scraper 306 is reset by the spring telescopic column 305. The scraper 306 cleans up the fallen welding slag, making the movement of the clamping assembly smoother during clamping and preventing welding slag from falling onto the worktable 1 and affecting its clamping effect. At the same time, the welding slag will damage the weld. The continuity and density of the weld seam reduce its strength and toughness, making it prone to cracking under pressure or vibration. This affects the sealing performance and service life of the valve core and seat. Timely cleaning of welding slag can effectively prevent the formation of slag inclusions and ensure weld quality. The movement of connecting plate 311 drives the movement of L-shaped plate 308, which in turn drives the movement of moving column 310. The movement of moving column 310 drives the movement of connecting plate 311. The movement of connecting plate 311 resets the spring telescopic column 309. The movement of connecting plate 311 pushes the welding slag on both sides into the middle of the collection box 307, reducing the area occupied by the welding slag and allowing the collection box 307 to hold more welding slag.

[0027] The movement of connecting plate 2 312 causes friction plate 401 to move. The movement of friction plate 401 causes roller 402 to rotate through friction. The rotation of roller 402 causes reciprocating screw 2 409 to rotate. The rotation of reciprocating screw 2 409 causes push plate 407 to move. The movement of push plate 407 causes support plate 3 408 to move. The movement of support plate 3 408 causes hinge plate 406 to move. The movement of hinge plate 406 causes slide plate 413 to move to the left. Spring telescopic column 3 404 resets it. At this time, slide plate 413 is in the open state shown in the figure. In this state, lubricating oil is evenly applied to the groove of the clamping component of the workbench 1 to prevent jamming during clamping. At the same time, when the reciprocating screw 409 rotates, it drives the stirring plate 410 to rotate. The push plate 407 moves and rotates with the stirring plate 410, stirring the lubricating oil in the oil tank 403 to prevent the lubricating oil from solidifying and affecting its lubrication effect. The float plate 411 floats up and down, driving the telescopic plate 412 to move up and down. The up and down movement of the telescopic plate 412 can display how much lubricating oil is left in the oil tank 403, which is convenient for the staff to quickly change it.

[0028] This invention provides a double-clamping device for welding valve cores and seats. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. A double-clamping device for welding valve cores and seats, comprising a worktable, characterized in that: The top of the workbench is equipped with a fixing device, a cleaning device, and a lubrication device. The fixing device includes a motor, a support plate, a reciprocating screw, a moving plate, a fixed plate, a semi-circular clamp, a moving rod, a sleeve, a triangular chuck, and a clamping block. The support plate is fixedly connected to the right side of the worktable, the motor is fixedly connected to the left side of the support plate, the reciprocating screw is fixedly connected to the output end of the motor, the moving plate is movably connected to the circumferential surface of the reciprocating screw, the fixed plate is fixedly connected to the top of the moving plate, the semi-circular clamp is fixedly connected to the front of the fixed plate, the sleeve is fixedly connected to the top of the worktable, the moving rod is slidably connected to the inner wall of the sleeve, the triangular chuck is installed on the inner wall of the sleeve, and the clamping block is installed on the top of the triangular chuck. The cleaning device includes a second movable rod, a sliding rod, a chute plate, a second fixed plate, a first spring telescopic column, a scraper, a collection box, an L-shaped plate, a second spring telescopic column, a movable column, a first connecting plate, and a second connecting plate. The second connecting plate is fixedly connected to the inner wall of the first fixed plate. The second movable rod is fixedly connected to the left side of the first connecting plate. The sliding rod is fixedly connected to the bottom of the second movable rod. The chute plate contacts the workbench. The second fixed plate is fixedly connected to the top of the workbench. The first spring telescopic column is fixedly connected to the rear of the second fixed plate. The scraper is fixedly connected to the rear of the chute plate. The collection box is fixedly connected to the bottom of the workbench. The L-shaped plate is fixedly connected to the left side of the second connecting plate. The second spring telescopic column is fixedly connected to the inner wall of the collection box. The movable column is fixedly connected to the right side of the L-shaped plate. The first connecting plate is fixedly connected to the right side of the movable column. The lubrication device includes a friction plate, rollers, an oil drum, a spring telescopic column three, a support plate two, a hinge plate, and a sliding plate. The friction plate is fixedly connected to the right side of the connecting plate two, the rollers are in contact with the friction plate, the oil drum is fixedly installed on the top of the workbench, the spring telescopic column three is fixedly connected to the inner wall of the oil drum, the sliding plate is slidably connected to the inner wall of the oil drum, the support plate two is fixedly connected to the front of the sliding plate, and the hinge plate is hinged to the inner wall of the support plate two through a connecting rod. The bottom of the clamping block is in contact with the top of the sleeve, and the outer wall of the fixing plate is in contact with the inner wall of the workbench. The circumferential surface of the reciprocating lead screw is rotatably connected to the inner wall of the support plate, and the top of the moving plate is in contact with the top of the workbench. The connecting plate 1 is in contact with the inner wall of the collection box, the spring telescopic column 1 is fixedly connected to the left side of the connecting plate 1, the circumferential surface of the slide rod is slidably connected to the inner wall of the slide plate, and the bottom of the scraper is in contact with the top of the workbench. The lubrication device also includes a push plate, a second reciprocating screw, a third support plate, a stirring plate, a float plate, and a telescopic plate. The second reciprocating screw is fixedly connected to the front of the roller, the push plate is movably connected to the circumferential surface of the second reciprocating screw, the third support plate is fixedly connected to the rear of the push plate, the stirring plate is fixedly connected to the circumferential surface of the second reciprocating screw, the float plate is in contact with the inner wall of the oil drum, and the telescopic plate is fixedly connected to the top of the float plate.

2. The double-clamping device for welding valve cores and seats according to claim 1, characterized in that: The top of the push plate is in contact with the inner wall of the oil drum, and the right side of the spring telescopic column three is fixedly connected to the left side of the slide plate.

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