Attaching pressure adjustable welding tool for valve body welding

Abstract

The invention discloses a fitting pressure adjustable welding tool for valve body welding, and relates to the technical field of welding tools, the fitting pressure adjustable welding tool comprises a rack and a clamping mechanism, the clamping mechanism comprises a hydraulic cylinder and a connecting sliding block, a shell and a zigzag rod are fixedly mounted at the top and the bottom of the connecting sliding block respectively, an adjusting assembly is mounted on the side of the outer side of the shell, and the adjusting assembly is connected with the hydraulic cylinder. The adjusting assembly comprises an air cylinder, the air cylinder is fixedly installed on the side of the outer side of the connecting sliding block through a support, and a connecting plate is fixedly installed at the output end of the air cylinder. Wedge blocks are fixedly installed at the ends, away from the output ends of the air cylinders, of the connecting plates, and limiting grooves are formed in the inclined faces of the outer sides of the wedge blocks. According to the fitting pressure adjustable welding tool for valve body welding, the adjustable effect is achieved, the clamping force can be adjusted, looseness is not prone to occurring, and welding of a valve body is promoted.

Description

Technical Field

[0001] The invention relates to the technical field of welding tooling, in particular to a welding tooling with adjustable fitting pressure for valve body welding. Background Art

[0002] The valve body is a major component in the valve. The valve body plays an important role in controlling the on-off, flow direction and flow rate of the medium in the pipeline. The valve body is an indispensable part of fluid transportation. With the rapid development of industry, the application of valve bodies is increasing. There are many ways to manufacture valve bodies, such as casting, turning and welding, but when the valve body needs to be mass-produced, the most cost-effective way is welding. The valve body consists of a connecting pipe and flanges mounted on both ends of the connecting pipe. In the valve production and processing process, welding is an important link in valve production. It is related to the sealing and structural strength of the valve. By using a welding device to weld the inside of the valve body, it is ensured that its structure is firm and has good sealing. Therefore, welding equipment is needed to weld the valve body, and before welding the valve body, tooling is needed to clamp and fix the valve body.

[0003] At present, when the existing welding tooling clamps the valve body, the fitting pressure of the valve body is adjusted unchanged, and the clamping force cannot be adjusted according to different materials. It can only be rigidly fixed, which easily leaves clamping marks on the surface of the valve body, affecting the overall appearance of the valve body. In severe cases, the valve body may be deformed by the clamp, resulting in economic losses. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a welding tool with adjustable fitting pressure for valve body welding, comprising: A frame, the frame having a supporting frame body, a positioning assembly being installed at the center line inside the frame; The fitting pressure adjustable welding tool for valve body welding also includes: A clamping mechanism, which is used to fix the valve body and is installed on a workbench outside the frame; The camming mechanism comprises a hydraulic cylinder and a connecting slide block, wherein the hydraulic cylinder is installed at the side of the outer side of the frame, the connecting slide block is slidably installed at the workbench outside the frame, the top and bottom of the connecting slide block are respectively fixedly installed with a shell and a bending rod, an adjusting component is installed at the side of the outer side of the shell, a moving block is slidably installed at the side of the inner side of the shell, a crescent block is rotatably installed at the side of the top of the moving block, and an elastic supporting sheet is fixedly installed at one end of the moving block away from the crescent block, and the bending rod and the shell are pushed to move together by the extension of the output end of the hydraulic cylinder and under the sliding connection of the connecting slide block, at this time, the symmetrical moving blocks on both sides move towards each other, so that the valve body at the workbench of the frame can be clamped, so that the valve body is clamped, and then the valve body is fixed, and it is not easy to move at will, which is helpful for welding the valve body; The adjusting assembly includes a cylinder, which is fixedly mounted on the side of the outer side of the connecting slider through a bracket, a connecting plate is fixedly mounted on the output end of the cylinder, a wedge is fixedly mounted on the end of the connecting plate away from the output end of the cylinder, a limiting groove is provided on the inclined surface of the outer side of the wedge, and the position of the elastic support sheet corresponds to the position of the limiting groove. By contracting the output end of the cylinder, the wedge can be pulled toward the inner direction of the shell, and in combination with the limiting groove provided on the inclined surface of the outer side of the wedge, the ball at the end of the elastic support sheet can be embedded in the limiting groove; With the continuous movement, a pressing force can be applied to the elastic support sheet, so that the elastic support sheet is compressed and deformed, and the reverse force on the moving block is increased by using the action force and reaction force, which helps to increase the clamping force on the valve body. When the output end of the cylinder is extended, the wedge block moves outward, which reduces the pressing force on the elastic support sheet, and reduces the clamping force on the valve body. The position of the wedge is controlled through the output end of the cylinder so that the wedge moves linearly, thereby adjusting the fitting pressure of the valve body welding. It can adapt to valve bodies of different materials, has strong adaptability, and reduces limitations.

[0005] Preferably, connecting teeth are fixedly installed at both ends of the bottom of the connecting slider, a strip groove is opened at the bending part of the outer side of the connecting tooth, a pressing ball is fixedly installed at the bottom end of the connecting tooth, and a return spring is fixedly installed between the outer side of the connecting slider and the two sides corresponding to the inner wall outside the shell.

[0006] Preferably, the crescent blocks are evenly distributed on the sides of the top of the moving block to facilitate adaptation to the irregular curved surface of the valve body, and the elastic support sheet is arc-shaped to facilitate elastic deformation after being squeezed.

[0007] Preferably, the cylinder, connecting plate and wedge block are installed at the same height, so that the wedge block can be driven to move by the output end of the cylinder. There are two wedge blocks, and the two wedge blocks are symmetrically installed along the moving block. The two symmetrical wedge blocks can be used together to squeeze the elastic support sheet so that the elastic support sheet is subjected to balanced force.

[0008] As the symmetrical moving blocks on both sides move toward each other, the ends of the crescent blocks fit against the surface of the valve body, and the crescent blocks can be rotated to adjust the angle. As a result, when the crescent blocks evenly distributed on the moving blocks are impacted by the uneven surface of the valve body, multiple groups of crescent blocks are rotated together to adjust the angle, thereby promoting a more stable clamping of the valve body.

[0009] Preferably, the positioning assembly includes a through hole and a flat plate, the through hole is opened in the middle of the frame workbench, the flat plate is fixedly installed inside the frame, and the flat plate is installed at a position close to the bottom of the frame, and the corresponding positions on the top of the flat plate are opened with a straight-line hole, and the bottom end of the bending rod passes through the straight-line hole, and the corresponding positions on the outside of the flat plate are slidably installed with a rectangular frame, and a supporting spring plate is fixedly installed at the edge of the outer side of the rectangular frame, and a centering module is installed in the middle of the top of the flat plate.

[0010] Preferably, there are two rectangular frames, and the two rectangular frames are symmetrically installed along the supporting spring plate, and the supporting spring plate is arc-shaped.

[0011] Preferably, the centering module includes a guide column, which is slidably installed at the center of the flat plate through a sliding sleeve, and a positioning cone is fixedly installed on the top of the guide column, and the positioning cone is installed directly below the through hole, and a base block is fixedly installed at the side of the outer side of the positioning cone, and the bottom of the base block is fixedly installed in the middle of the top of the supporting spring plate, and a support bar is fixedly installed at the side of the top of the positioning cone, and the support bar is obliquely installed. When the bending rod is pushed to move by the output end of the hydraulic cylinder, the bottom end of the bending rod is used to pass through the straight hole. At this time, the moving bending rod applies a pulling force to the rectangular frame. At this time, the symmetrical rectangular frames on both sides move toward each other and squeeze the supporting spring plate, so that the squeezed supporting spring plate is arched, and under the guidance of the guide column, the positioning cone moves upward, and at this time, the top end of the support bar passes through the through hole, and the top end of the support bar extends from the valve body port to the inside, so that the surface of the support bar can be used to contact the edge of the valve body port, so that the valve body is lifted, and three support bars are evenly distributed on the top of the positioning cone, so that the valve body is not easy to tilt.

[0012] Preferably, the positioning cone is installed directly above the guide column, and there are three support bars, which are evenly distributed on the top of the positioning cone.

[0013] As the surface of the support bar contacts the edge of the valve body port and the support bar continues to move upward, the valve body is limited. At the same time, the valve body is subjected to an upward urging force, and combined with the valve body's own weight, the valve body adjusts its position by itself, so that the valve body can always remain in the center of the frame workbench.

[0014] Preferably, auxiliary components are installed at corresponding positions of the inner wall of the frame, and the auxiliary components include a supporting rotating rod, which is rotatably installed on the inner wall of the frame through a rotating connector, and a torque spring is fixedly installed between the outer side of the supporting rotating rod and the inner wall of the frame, and the torque spring is conical, and a force plate is fixedly installed on the outer side of the supporting rotating rod and at one end away from the torque spring, and the force plate is installed obliquely, and a connecting square rod is fixedly installed at the middle of the outer side of the supporting rotating rod, and a cylindrical locking block is fixedly installed on the top of the connecting square rod, and a pressing ball at the bottom end of the connecting tooth contacts the force plate, and under the continuous movement of the pressing ball, the force plate is subjected to pressing force, and combined with the inclined installation of the force plate, the supporting rotating rod is driven to rotate and adjust the angle, and the torque spring is elastically deformed by the torque force; At the same time, the support of the connecting square rod is used to drive the cylindrical locking block to be embedded in the strip slot, thereby achieving clamping and completing the overlap, making it less likely for the whole to shake, thereby allowing the structures to interact with each other and have good stability.

[0015] Preferably, the supporting rotating rod passes through the center of the torque spring, so that the torque spring is not easily bent or skewed after being subjected to torque force, and the connecting square rod is installed at an angle.

[0016] The present invention provides a welding tool with adjustable fitting pressure for valve body welding. It has the following beneficial effects: 1. The fitting pressure adjustable welding tooling for the valve body welding utilizes the extension of the output end of the hydraulic cylinder and the sliding connection of the connecting slider to push the bending rod and the shell together to move. At this time, the symmetrical moving blocks on both sides move toward each other, so that the valve body at the frame workbench can be clamped, so that the valve body is clamped and then fixed, which is not easy to move at will, thereby facilitating the welding of the valve body.

[0017] 2. The fitting pressure adjustable welding tooling for valve body welding controls the position of the wedge block through the output end of the cylinder, so that the wedge block moves linearly, and the fitting pressure of the valve body welding can be adjusted. It can adapt to valve bodies of different materials, has strong adaptability, and reduces limitations.

[0018] 3. The fitting pressure-adjustable welding tooling for the valve body welding has the symmetrical moving blocks on both sides moving toward each other. At this time, the end of the crescent block fits with the surface of the valve body, and the crescent block can be rotated to adjust the angle. When the crescent blocks evenly distributed on the moving block are impacted by the uneven surface of the valve body, multiple groups of crescent blocks can be rotated to adjust the angle together, thereby promoting a more stable clamping of the valve body.

[0019] Fourth, the fitting pressure-adjustable welding tooling for the valve body welding uses the bottom end of the bending rod to apply a pushing force to the rectangular frame. At this time, the symmetrical rectangular frames on both sides move toward each other and squeeze the support spring plate, so that the squeezed support spring plate is arched, and under the guidance of the guide column, the positioning cone moves upward. At this time, the top end of the support bar passes through the through hole, and the top end of the support bar extends from the valve body port to the inside, so that the surface of the support bar can be used to contact the edge of the valve body port, so that the valve body is lifted, and three support bars are evenly distributed on the top of the positioning cone, so that the valve body is not easy to tilt.

[0020] 5. The fitting pressure-adjustable welding tooling for the valve body welding, as the surface of the support bar contacts the edge of the valve body port and the support bar continues to move upward, the valve body is limited, and at the same time the valve body is subjected to an upward urging force, combined with the weight of the valve body, the valve body adjusts its position by itself, so that the valve body can always remain in the center of the frame workbench.

[0021] 6. The fitting pressure-adjustable welding tooling for welding the valve body uses the pressing ball at the bottom end of the connecting tooth to apply pressing pressure to the force plate, so that the supporting rotating rod will be driven to rotate and adjust the angle, and the torque spring will be elastically deformed by the torque force. At the same time, with the support of the connecting square rod, the cylindrical locking block is driven to be embedded in the interior of the strip slot, thereby achieving clamping and completing the overlap, making it less likely for the whole to shake, thereby allowing the structures to interact with each other and have good stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the welding tooling with adjustable fitting pressure for welding the valve body of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the welding tooling with adjustable fitting pressure for welding the valve body of the present invention; Figure 3 It is a schematic diagram of the connection structure between the clamping mechanism and the frame of the present invention; Figure 4 It is a schematic diagram of the overall structure of the clamping mechanism of the present invention; Figure 5 It is a schematic diagram of the connection structure between the adjustment component and the housing of the present invention; Figure 6 This is a schematic diagram of the internal structure of the shell cross section of the present invention; Figure 7 It is a schematic diagram of the connection structure between the positioning assembly and the frame of the present invention; Figure 8 This is a schematic diagram of the overall structure of the centering module of the present invention; Fig. 9 It is a schematic diagram of the connection structure between the auxiliary component and the frame of the present invention; Fig.10 It is a schematic diagram of the overall structure of the auxiliary components of the present invention.

[0023] In the figure: 1. frame; 2. positioning component; 3. clamping mechanism; 4. auxiliary component; 21. through hole; 22. flat plate; 23. straight hole; 24. rectangular frame; 25. support spring plate; 26. centering module; 261. guide column; 262. base block; 263. positioning cone; 264. support bar; 31. hydraulic cylinder; 32. connecting slider; 33. shell; 34. bending rod; 35. adjustment component; 36. moving block; 37. crescent block; 38. elastic support sheet; 39. connecting tooth; 310. strip slot; 311. pressing ball; 312. reset spring; 351. cylinder; 352. connecting plate; 353. wedge block; 354. limit slot; 41. support rotating rod; 42. torque spring; 43. force plate; 44. connecting square rod; 45. cylindrical locking block. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0025] The first embodiment, as Figure 1-Figure 6 As shown, the present invention provides a technical solution: a welding tool with adjustable fitting pressure for valve body welding, comprising: A frame 1, the frame 1 having a supporting frame body, a positioning assembly 2 is installed at the center line inside the frame 1; The fitting pressure adjustable welding tool for valve body welding also includes: A clamping mechanism 3, which is used to fix the valve body and is installed on a workbench outside the frame 1; The clamping mechanism 3 includes a hydraulic cylinder 31 and a connecting slider 32. The hydraulic cylinder 31 is installed at the side of the outer side of the frame 1. The connecting slider 32 is slidably installed at the workbench outside the frame 1. The top and bottom of the connecting slider 32 are respectively fixedly installed with a shell 33 and a bending rod 34. An adjusting component 35 is installed at the side of the outer side of the shell 33. A moving block 36 is slidably installed at the side of the inner side of the shell 33. A crescent block 37 is rotatably installed at the side of the top of the moving block 36. An elastic supporting sheet 38 is fixedly installed at one end of the moving block 36 away from the crescent block 37. The staff turns on the hydraulic cylinder 31 to work, and uses the extension of the output end of the hydraulic cylinder 31 and the sliding connection of the connecting slider 32 to push the bending rod 34 and the shell 33 together to move. At this time, the symmetrical moving blocks 36 on both sides move toward each other, so that the valve body at the workbench of the frame 1 can be clamped, so that the valve body is clamped, and then the valve body is fixed; The crescent blocks 37 are evenly distributed on the sides of the top of the moving block 36 to facilitate adaptation to the irregular curved surface of the valve body. The elastic support sheet 38 is arc-shaped to facilitate elastic deformation after being squeezed.

[0026] The adjusting assembly 35 includes a cylinder 351, which is fixedly mounted on the side of the outer side of the connecting slider 32 through a bracket, and a connecting plate 352 is fixedly mounted on the output end of the cylinder 351, and a wedge block 353 is fixedly mounted on one end of the connecting plate 352 away from the output end of the cylinder 351, and a limiting groove 354 is provided on the inclined surface of the outer side of the wedge block 353, and the position of the elastic support sheet 38 corresponds to the position of the limiting groove 354. When the staff turns on the cylinder 351 to work, the output end of the cylinder 351 is contracted to pull the wedge block 353 toward the inner direction of the housing 33, and the limiting groove 354 is provided on the inclined surface of the outer side of the wedge block 353, so that the ball at the end of the elastic support sheet 38 can be embedded in the limiting groove 354; With continuous movement, pressing pressure is applied to the elastic support sheet 38, causing the elastic support sheet 38 to be compressed and deformed, and the reverse force on the movable block 36 is increased by utilizing the action force and reaction force, thereby helping to increase the clamping force on the valve body. When the output end of the cylinder 351 is extended, the wedge block 353 moves outward, thereby reducing the pressing pressure on the elastic support sheet 38, thereby reducing the clamping force on the valve body.

[0027] The cylinder 351, the connecting plate 352 and the wedge block 353 are installed at the same height, so that the wedge block 353 can be driven to move by the output end of the cylinder 351. There are two wedge blocks 353, and the two wedge blocks 353 are symmetrically installed along the moving block 36. The two symmetrical wedge blocks 353 can be used to squeeze the elastic support sheet 38 together, so that the elastic support sheet 38 is subjected to balanced force.

[0028] As the symmetrical moving blocks 36 on both sides move toward each other, the ends of the crescent blocks 37 fit against the surface of the valve body, and the crescent blocks 37 can be rotated to adjust the angle, so that when the crescent blocks 37 evenly distributed on the moving blocks 36 are impacted by the uneven surface of the valve body, multiple groups of crescent blocks 37 are rotated to adjust the angle together, thereby promoting a more stable clamping of the valve body.

[0029] The second embodiment, as Figure 1-Figure 8 As shown, based on the first embodiment: The positioning assembly 2 includes a through hole 21 and a flat plate 22. The through hole 21 is opened in the middle of the workbench of the frame 1. The flat plate 22 is fixedly installed inside the frame 1, and the flat plate 22 is installed at a position close to the bottom of the frame 1. A straight hole 23 is opened at the corresponding position on the top of the flat plate 22. The bottom end of the bending rod 34 passes through the straight hole 23. A rectangular frame 24 is slidably installed at the corresponding position on the outside of the flat plate 22. A supporting spring plate 25 is fixedly installed at the edge of the outer side of the rectangular frame 24. A centering module 26 is installed in the middle of the top of the flat plate 22.

[0030] There are two rectangular frames 24 , and the two rectangular frames 24 are symmetrically installed along the supporting spring plate 25 , and the supporting spring plate 25 is arc-shaped.

[0031] The centering module 26 includes a guide column 261, which is slidably installed at the center of the flat plate 22 through a sliding sleeve. A positioning cone 263 is fixedly installed on the top of the guide column 261, and the positioning cone 263 is installed just below the through hole 21. A base block 262 is fixedly installed on the side of the outer side of the positioning cone 263. The bottom of the base block 262 is fixedly installed in the middle of the top of the supporting spring plate 25. A support bar 264 is fixedly installed on the side of the top of the positioning cone 263. The support bar 264 is installed obliquely. When the bending rod 34 is pushed to move by the output end of the hydraulic cylinder 31, the bending rod 34 is moved by the bending rod 34. The bottom end of the folding rod 34 passes through the straight hole 23. At this time, the moving folding rod 34 applies a pulling force to the rectangular frame 24. At this time, the symmetrical rectangular frames 24 on both sides move toward each other and squeeze the support spring plate 25, so that the squeezed support spring plate 25 is arched, and under the guidance of the guide column 261, the positioning cone 263 moves upward. At this time, the top end of the support bar 264 passes through the through hole 21, and the top end of the support bar 264 extends from the valve body port to the inside, so that the surface of the support bar 264 can be used to contact the edge of the valve body port, so that the valve body is lifted; Furthermore, three support bars 264 are evenly distributed on the top of the positioning cone 263, thereby preventing the valve body from tilting.

[0032] The positioning cone 263 is installed directly above the guide column 261. There are three support bars 264, and the three support bars 264 are evenly distributed on the top of the positioning cone 263. As the surface of the support bar 264 contacts the edge of the valve body port and the support bar 264 continues to move upward, the valve body is limited. At the same time, the valve body is subjected to an upward urging force, and combined with the weight of the valve body itself, the valve body adjusts its position by itself, so that the valve body can always remain at the center of the workbench of the frame 1.

[0033] The third embodiment, as Figure 1-Figure 6 and Figure 9-10 As shown, based on the first embodiment: Connecting teeth 39 are fixedly installed at both ends of the bottom of the connecting slider 32, a strip-shaped slot 310 is opened at the bending part of the outer side of the connecting tooth 39, a pressing ball 311 is fixedly installed at the bottom end of the connecting tooth 39, and a return spring 312 is fixedly installed between the outer side of the connecting slider 32 and the two sides corresponding to the inner wall outside the shell 33.

[0034] Auxiliary components 4 are installed at corresponding positions on the inner wall of the frame 1. The auxiliary components 4 include a supporting rotating rod 41. The supporting rotating rod 41 is rotatably installed on the inner wall of the frame 1 through a rotating connector. A torque spring 42 is fixedly installed between the outer side of the supporting rotating rod 41 and the inner wall of the frame 1. The torque spring 42 is conical. A force plate 43 is fixedly installed on the outer side of the supporting rotating rod 41 and at one end away from the torque spring 42. The force plate 43 is installed obliquely. A connecting square rod 44 is fixedly installed in the middle of the outer side of the supporting rotating rod 41. A cylindrical locking block 45 is fixedly installed on the top of the connecting square rod 44. When the connecting slider 3 When the connecting teeth 39 move, they will move together with the connecting slider 32, so that the pressing ball 311 at the bottom of the connecting teeth 39 can be used to contact the force-bearing plate 43, and under the continuous movement of the pressing ball 311, the force-bearing plate 43 is pressed, and combined with the inclined installation of the force-bearing plate 43, the supporting rotating rod 41 will be driven to rotate and adjust the angle, and the torque spring 42 will be elastically deformed by the torque force, and at the same time, with the support of the connecting square rod 44, the cylindrical locking block 45 is driven to be embedded in the strip-shaped slot 310, thereby achieving a clamping state and completing the overlap.

[0035] The supporting rotating rod 41 passes through the center of the torque spring 42, so that the torque spring 42 is not easy to bend or skew after being subjected to the torque force, and the connecting square rod 44 is installed obliquely.

[0036] When in use, first the staff will place the valve body material that needs to be welded on the workbench outside the frame 1, and the staff will start the cylinder 351 to work. By contracting the output end of the cylinder 351, the wedge block 353 can be pulled toward the inner direction of the shell 33, and the limiting groove 354 is provided on the inclined surface of the outer side of the wedge block 353, so that the ball at the end of the elastic support sheet 38 can be embedded in the limiting groove 354. With continuous movement, a pressing force can be applied to the elastic support sheet 38, so that the elastic support sheet 38 is compressed and deformed, and the reverse force on the moving block 36 is increased by the action force and reaction force, which helps to increase the clamping force on the valve body. When the output end of the cylinder 351 is extended, the wedge block 353 moves outward at this time, thereby reducing the pressing force on the elastic support sheet 38, thereby reducing the clamping force on the valve body, and then adjusting the fitting pressure of the valve body welding; At this time, the staff starts the hydraulic cylinder 31 to work, and uses the extension of the output end of the hydraulic cylinder 31 and the sliding connection of the connecting slider 32 to push the bending rod 34 and the housing 33 together to move; The bottom end of the bending rod 34 is passed through the straight hole 23. At this time, the moving bending rod 34 applies a pulling force to the rectangular frame 24. At this time, the symmetrical rectangular frames 24 on both sides move toward each other and squeeze the support spring plate 25, so that the squeezed support spring plate 25 is arched, and under the guidance of the guide column 261, the positioning cone 263 moves upward. At this time, the top end of the support bar 264 passes through the through hole 21, and the top end of the support bar 264 extends from the valve body port to the inside, so that the surface of the support bar 264 can be used to contact the edge of the valve body port, so that the valve body is lifted; At the same time, as the surface of the support bar 264 contacts the edge of the valve body port, the support bar 264 continues to move upward, so that the valve body is limited, and the valve body is subjected to an upward urging force, and combined with the weight of the valve body, the valve body adjusts its position by itself, so that the valve body can always be kept at the center of the workbench of the frame 1; The symmetrical moving blocks 36 on both sides move toward each other. As the symmetrical moving blocks 36 on both sides move toward each other, the ends of the crescent blocks 37 fit the surface of the valve body, and the crescent blocks 37 can be rotated to adjust the angle, so that when the crescent blocks 37 evenly distributed on the moving blocks 36 are subjected to the uneven surface of the valve body, multiple groups of crescent blocks 37 are rotated together to adjust the angle, so that the valve body is clamped more stably, and the valve body at the workbench of the frame 1 can be clamped, so that the valve body is clamped, and then the valve body is fixed; Finally, the valve body is welded by a welding manipulator installed on the top of the frame 1.

[0037] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A welding tool with adjustable fitting pressure for valve body welding, characterized in that: include: A frame (1), the frame (1) having a frame body with a supporting function, a positioning assembly (2) being installed at the center line inside the frame (1); The fitting pressure adjustable welding tool for valve body welding also includes: A clamping mechanism (3), the clamping mechanism (3) being used to fix the valve body, the clamping mechanism (3) being mounted on a workbench outside the frame (1); The clamping mechanism (3) comprises a hydraulic cylinder (31) and a connecting slider (32), wherein the hydraulic cylinder (31) is mounted on the side of the outer side of the frame (1), the connecting slider (32) is slidably mounted on the workbench outside the frame (1), the top and bottom of the connecting slider (32) are respectively fixedly mounted with a shell (33) and a bending rod (34), an adjustment component (35) is mounted on the side of the outer side of the shell (33), a moving block (36) is slidably mounted on the side of the inner side of the shell (33), a crescent block (37) is rotatably mounted on the side of the top of the moving block (36), and an elastic support sheet (38) is fixedly mounted on one end of the moving block (36) away from the crescent block (37); The adjustment assembly (35) comprises a cylinder (351), wherein the cylinder (351) is fixedly mounted on the side of the outer side of the connecting slider (32) via a bracket, a connecting plate (352) is fixedly mounted on the output end of the cylinder (351), a wedge block (353) is fixedly mounted on one end of the connecting plate (352) away from the output end of the cylinder (351), a limiting groove (354) is provided on the inclined surface on the outer side of the wedge block (353), and the position of the elastic support sheet (38) corresponds to the position of the limiting groove (354).

2. The welding tool with adjustable fitting pressure for valve body welding according to claim 1, characterized in that: Connecting teeth (39) are fixedly mounted at both ends of the bottom of the connecting slider (32); a strip-shaped slot (310) is provided at the bend on the outside of the connecting tooth (39); a pressing ball (311) is fixedly mounted on the bottom end of the connecting tooth (39); and a return spring (312) is fixedly mounted between the outside of the connecting slider (32) and the two sides corresponding to the inner wall outside the housing (33).

3. The welding tool with adjustable fitting pressure for valve body welding according to claim 1 is characterized in that: The crescent blocks (37) are evenly distributed on the sides of the top of the moving block (36), and the elastic support sheet (38) is arc-shaped.

4. The welding tool with adjustable fitting pressure for valve body welding according to claim 1 is characterized in that: The cylinder (351), the connecting plate (352) and the wedge block (353) are installed at the same height. There are two wedge blocks (353), and the two wedge blocks (353) are symmetrically installed along the moving block (36).

5. The welding tool with adjustable fitting pressure for valve body welding according to claim 1 is characterized in that: The positioning assembly (2) comprises a through hole (21) and a plate (22), wherein the through hole (21) is provided in the middle of a workbench of the frame (1), the plate (22) is fixedly mounted inside the frame (1), and the plate (22) is mounted at a position close to the bottom of the frame (1), a straight hole (23) is provided at corresponding positions on the top of the plate (22), the bottom end of the bending rod (34) passes through the straight hole (23), a rectangular frame (24) is slidably mounted at corresponding positions on the outside of the plate (22), a supporting spring plate (25) is fixedly mounted at the edge of the outside of the rectangular frame (24), and a centering module (26) is mounted at the middle of the top of the plate (22).

6. The welding tool with adjustable fitting pressure for valve body welding according to claim 5 is characterized in that: There are two rectangular frames (24), and the two rectangular frames (24) are symmetrically installed along the supporting spring plate (25), and the supporting spring plate (25) is arc-shaped.

7. The welding tool with adjustable fitting pressure for valve body welding according to claim 5, characterized in that: The centering module (26) comprises a guide column (261), wherein the guide column (261) is slidably mounted at the center of the flat plate (22) via a sliding sleeve, a positioning cone (263) is fixedly mounted on the top of the guide column (261), and the positioning cone (263) is mounted directly below the through hole (21), a base block (262) is fixedly mounted on the side of the outer side of the positioning cone (263), the bottom of the base block (262) is fixedly mounted in the middle of the top of the supporting spring plate (25), and a support bar (264) is fixedly mounted on the side of the top of the positioning cone (263), and the support bar (264) is installed at an angle.

8. The welding tool with adjustable fitting pressure for valve body welding according to claim 7, characterized in that: The positioning cone (263) is installed directly above the guide column (261), and there are three support bars (264), and the three support bars (264) are evenly distributed on the top of the positioning cone (263).

9. The welding tool with adjustable fitting pressure for valve body welding according to claim 1, characterized in that: Auxiliary components (4) are installed at positions corresponding to the inner wall of the frame (1). The auxiliary components (4) include a support rotating rod (41). The support rotating rod (41) is rotatably installed on the inner wall of the frame (1) through a rotating connector. A torque spring (42) is fixedly installed between the outer side of the support rotating rod (41) and the inner wall of the frame (1). The torque spring (42) is conical. A force plate (43) is fixedly installed on the outer side of the support rotating rod (41) and at one end away from the torque spring (42). The force plate (43) is installed in an inclined manner. A connecting square rod (44) is fixedly installed in the middle of the outer side of the support rotating rod (41). A cylindrical locking block (45) is fixedly installed at the top end of the connecting square rod (44).

10. The welding tool with adjustable fitting pressure for valve body welding according to claim 9, characterized in that: The supporting rotating rod (41) passes through the center of the torque spring (42), and the connecting square rod (44) is installed at an angle.

Images