A device for assembling a valve body and a rubber ring of a large-diameter corrosion-resistant butterfly valve

Abstract

The application discloses a device for assembling a valve body and a rubber ring of a large-diameter corrosion-resistant butterfly valve, and relates to the technical field of butterfly valve processing. The upper portion of the frame is provided with a moving assembly, the clamping assembly is arranged at the lower portion of the moving assembly, and the clamping assembly comprises a second linear module, and the output end of the second linear module is provided with a clamping roller seat. The clamping assembly is moved by the moving assembly, the clamping component can be smoothly placed into the inner side of the rubber ring, the rubber ring is automatically formed into a regular concave shape by using a folding and inner supporting structure, the overall outer diameter is reduced, and then the rubber ring is smoothly entered into the valve body, so that the risk of jamming is reduced. Subsequently, the clamping assembly moves and extrudes the shaped rubber ring to the inner side of the valve body, the rubber ring is accurately clamped with the valve body, and then the rubber ring is tightly matched with the valve body through the relaxation and reset actions of the clamping component.

Description

Technical Field

[0001] This invention relates to the field of butterfly valve processing technology, specifically to a device for assembling the valve body and rubber ring of a large-diameter corrosion-resistant butterfly valve. Background Technology

[0002] Large-diameter corrosion-resistant butterfly valves are core industrial valves suitable for highly corrosive media and high-flow conditions. They are widely used in harsh operating environments such as chemical, petroleum, seawater desalination, pharmaceutical, and municipal water conservancy industries. The internal assembly of the rubber sealing ring is a key process in its production and processing.

[0003] Currently, the rubber ring assembly of this type of large-diameter butterfly valve is generally carried out manually. Due to the large size of the rubber ring, manual assembly is laborious. At the same time, it is necessary to manually align the valve stem clearance hole on the sealing ring with the corresponding valve stem clearance hole on the valve body. The alignment operation is cumbersome, time-consuming and labor-intensive. This not only seriously reduces the overall assembly efficiency, but also easily affects the subsequent assembly accuracy and sealing effect of the valve due to manual alignment deviation. Summary of the Invention

[0004] The purpose of this invention is to provide a device for assembling the valve body and rubber ring of a large-diameter corrosion-resistant butterfly valve, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for assembling the valve body and rubber ring of a large-diameter corrosion-resistant butterfly valve, comprising a frame and a clamping assembly. A movable assembly is provided on the upper part of the frame, and the clamping assembly is located on the lower part of the movable assembly. The clamping assembly includes a second linear module. A clamping roller seat is provided at the output end of the second linear module, and a fixed roller is fixedly connected to the bottom of the clamping roller seat. A movable roller is slidably connected inside the clamping roller seat. A positioning seat is fixedly connected to the bottom of the movable assembly, and first torsion spring shafts are symmetrically arranged at both ends of the positioning seat. An inner support plate is installed at the end of the first torsion spring shaft. A limit post is fixedly connected to the top end of the inner support plate, and a slotted plate is sleeved on the outer side of the limit post. A guide assembly is connected to the upper part of the movable roller, and a positioning assembly is connected to the middle part of the positioning seat.

[0006] Furthermore, the inner support plate is arc-shaped, and the radius of curvature of the outer arc of the inner support plate is equal to the radius of curvature of the outer arc of the positioning seat.

[0007] Furthermore, the slotted plate is fixedly connected to the positioning seat, and two slotted plates are symmetrically arranged about the center line of the positioning seat.

[0008] Furthermore, the moving component includes a first linear module, which is mounted on the top of the frame. The output end of the first linear module is connected to a drive base. An electric cylinder is fixedly connected to the center of the top of the drive base, and the output end of the electric cylinder is connected to a hanger. Vertical rods are symmetrically mounted on the top of the hanger, and the vertical rods are slidably connected to the drive base.

[0009] Furthermore, the guide assembly includes a limiting groove, a limiting groove is provided on one side of the movable roller, and a sliding roller is installed on the upper side of the movable roller. A side plate is fixedly connected to one side of the hanger, and a straight groove is provided in the middle of one side of the side plate. A rotating plate is rotatably connected to the middle of one side of the side plate, and a stop block is abutted against the lower part of the rotating plate. A guide groove is connected to one end of the straight groove, and a buffer pad is fixedly connected to one end of the straight groove.

[0010] Furthermore, the clamping roller seat is slidably connected to the movable roller through a limiting groove, and the length of the limiting groove is greater than the distance between the straight groove and the guide groove.

[0011] Furthermore, the guide groove and the straight groove form a right-angled trapezoidal structure, and the width of the guide groove and the straight groove matches the diameter of the sliding roller.

[0012] Furthermore, the positioning component includes a second torsion spring shaft, which is disposed on one side of the side plate. One end of the second torsion spring shaft is connected to a swing arm. One end of the swing arm is fixedly connected to a drive rod, and one end of the drive rod is rotatably connected to a first connecting plate. The lower end of the first connecting plate is rotatably connected to a transmission plate, and a fixed shaft is disposed in the middle of the transmission plate. The lower end of the fixed shaft is rotatably connected to a second connecting plate, and the lower end of the second connecting plate is rotatably connected to a positioning pin.

[0013] Furthermore, the fixed shaft is rotatably connected to the hanger, and the hanger is fixedly connected to the stop block.

[0014] Furthermore, the positioning pin is slidably connected to the positioning seat, and the center line of the positioning pin coincides with the center line of the positioning seat.

[0015] This invention provides a device for assembling the valve body and rubber ring of a large-diameter corrosion-resistant butterfly valve, which has the following advantages: 1. This invention uses a moving component to drive the clamping component, which smoothly places the clamping component inside the rubber ring. The closing and internal support structure automatically shapes the rubber ring into a regular concave shape, reducing its overall outer diameter and allowing it to smoothly enter the valve body, thus reducing the risk of jamming. Subsequently, the clamping component moves and presses the shaped rubber ring against the inside of the valve body, ensuring precise engagement between the outer protrusion of the rubber ring and the valve body. The loosening and resetting actions of the clamping component then achieve a tight fit between the rubber ring and the valve body. The entire process is automated, eliminating the need for manual alignment and force application. This fundamentally solves the problems of low efficiency, high labor intensity, and easy alignment deviation in traditional manual assembly of large-diameter corrosion-resistant butterfly valves, ensuring assembly quality and the sealing performance of the butterfly valve.

[0016] 2. During the clamping and assembly process, the present invention automatically drives the movable roller to lift when needed by sliding the sliding roller in a specific channel and cooperating with the rotating plate, providing clearance space for the fitting assembly of the rubber ring and the valve body and avoiding interference. After the assembly is completed, the movable roller can be automatically guided to descend and reset. The lifting and resetting actions are triggered and guided by mechanical motion, without the need to add an independent drive source, which reduces equipment cost and maintenance complexity. At the same time, the entire clearance and resetting cycle can be completed automatically, meeting the needs of continuous and automated production, and significantly improving the smoothness and overall efficiency of the assembly operation.

[0017] 3. When gripping the rubber ring, the present invention can automatically retract the positioning pin through mechanical linkage to avoid interference. In the initial stage of shaping, the positioning pin automatically extends and inserts into the preset hole of the rubber ring to achieve preliminary accurate positioning. Subsequently, when assembling the rubber ring into the valve body, the positioning pin can be inserted into the corresponding clearance hole of the valve body to achieve one-click accurate docking of the two holes, completely solving the problem of deviation due to manual alignment. After assembly, the positioning pin will automatically retract, making it easy to remove the clamping component. At the same time, the entire positioning process is linked with the clamping and moving actions, requiring no additional control or drive, simplifying the operation and improving the coaxiality, accuracy and automation level of the assembly. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the assembly device for the valve body and rubber ring of a large-diameter corrosion-resistant butterfly valve according to the present invention. Figure 2 This is a bottom view of the clamping assembly of the device for assembling the valve body and rubber ring of a large-diameter corrosion-resistant butterfly valve according to the present invention. Figure 3 This is a schematic diagram of the internal structure of the hanger of the device for assembling the valve body and rubber ring of a large-diameter corrosion-resistant butterfly valve according to the present invention. Figure 4 This is a schematic diagram of the positioning seat structure of the device for assembling the valve body and rubber ring of a large-diameter corrosion-resistant butterfly valve according to the present invention. Figure 5 This is a schematic diagram of the structure of the device for assembling the valve body and rubber ring of a large-diameter corrosion-resistant butterfly valve according to the present invention, when the rubber ring is clamped. Figure 6 This is a schematic diagram of the guide assembly structure of the valve body and rubber ring assembly device for a large-diameter corrosion-resistant butterfly valve according to the present invention. Figure 7 This is a schematic diagram of the positioning component structure of the device for assembling the valve body and rubber ring of a large-diameter corrosion-resistant butterfly valve according to the present invention.

[0019] In the diagram: 1. Frame; 2. Moving assembly; 201. First linear module; 202. Drive base; 203. Electric cylinder; 204. Hanger; 205. Vertical rod; 3. Clamping assembly; 301. Second linear module; 302. Clamping roller seat; 303. Fixed roller; 304. Movable roller; 305. Positioning seat; 306. First torsion spring shaft; 307. Inner support plate; 308. Limiting post; 309. Slotted plate; 4. Guide assembly; 401, limiting groove; 402, sliding roller; 403, side plate; 404, straight groove; 405, rotating plate; 406, stop block; 407, guide groove; 408, buffer pad; 5, positioning assembly; 501, second torsion spring shaft; 502, swing arm; 503, drive rod; 504, first connecting plate; 505, transmission plate; 506, fixed shaft; 507, second connecting plate; 508, positioning pin. Detailed Implementation

[0020] Please see Figures 1 to 5This invention provides a technical solution: a device for assembling the valve body and rubber ring of a large-diameter corrosion-resistant butterfly valve, comprising a frame 1 and a clamping assembly 3. A moving assembly 2 is disposed on the upper part of the frame 1. The moving assembly 2 includes a first linear module 201. The first linear module 201 is mounted on the top of the frame 1, and its output end is connected to a drive seat 202. An electric cylinder 203 is fixedly connected to the center of the top of the drive seat 202, and its output end is connected to a hanger 204. Vertical rods 205 are symmetrically arranged on the top of the hanger 204, and the vertical rods 205 are slidably connected to the drive seat 202. The clamping assembly 3 is disposed on the lower part of the moving assembly 2, and includes a second linear module 301. The output end of the second linear module 301 is provided with... A clamping roller seat 302 is provided, and a fixed roller 303 is fixedly connected to the bottom of the clamping roller seat 302. A movable roller 304 is slidably connected inside the clamping roller seat 302. A positioning seat 305 is fixedly connected to the bottom of the moving component 2. A first torsion spring shaft 306 is symmetrically arranged at both ends of the positioning seat 305. An inner support plate 307 is installed at the end of the first torsion spring shaft 306. The inner support plate 307 is arc-shaped, and the radius of curvature of the outer arc of the inner support plate 307 is equal to the radius of curvature of the outer arc of the positioning seat 305. A limit post 308 is fixedly connected to one end of the top of the inner support plate 307, and a slotted plate 309 is sleeved on the outer side of the limit post 308. The slotted plate 309 is fixedly connected to the positioning seat 305, and two slotted plates 309 are symmetrically arranged about the center line of the positioning seat 305. The specific operation is as follows: The controller starts the first linear module 201, causing it to drive the drive seat 202 to move horizontally and precisely. This smoothly transfers the clamping component 3 to the worktable where the rubber ring is placed. Since the distance between the fixed roller 303 and the movable roller 304 is slightly larger than the cross-sectional width of the rubber ring, and the outer arc surfaces of the positioning seat 305 and the inner support plate 307 match the inner arc surface of the rubber ring, when the electric cylinder 203 drives the hanger 204 to move steadily downwards under the guidance of the vertical rod 205, the fixed roller 303, the positioning seat 305, and the inner support plate 307 can be smoothly moved. The rubber ring is smoothly inserted into the inner side, with the movable roller 304 positioned correspondingly on the outer side. The second linear module 301 is then activated via the controller, causing the clamping roller seat 302 to move accordingly. The movable roller 304 smoothly pushes one end of the rubber ring inwards. When the tension generated by the tightened rubber ring exceeds the elastic force of the torsion spring on the first torsion spring shaft 306, the inner support plate 307 moves centrally. This, combined with the slotted plate 309 and the limiting post 308, precisely limits the rotation angle of the inner support plate 307, ultimately resulting in a neatly arranged concave rubber ring with an overall outer diameter smaller than the inner diameter of the large-diameter corrosion-resistant butterfly valve body. The diameter is significantly reduced, greatly decreasing the risk of jamming or sticking when the rubber ring enters the valve body, and significantly improving the smoothness and convenience of subsequent assembly. Then, the moving component 2 precisely transfers the clamped rubber ring to the inside of the valve body on the positioning fixture. With the horizontal movement of the drive seat 202, the positioning seat 305 stably squeezes and adheres the rubber ring to the inside of the valve body. At the same time, the protrusion on the outside of the rubber ring precisely engages with the valve body, eliminating the need for manual alignment. At this time, the second linear module 301 is controlled to drive the clamping roller seat 302 to move back, and the rubber ring relaxes. The first torsion spring shaft 306 then drives the inner support plate. 307 expands outward, initially pressing the rubber ring against the inside of the valve body. Subsequently, after the moving roller 304 moves upward, the fixed roller 303 continues to press the rubber ring against the inner wall of the valve body, achieving a complete and tight fit between the rubber ring and the valve body. The entire assembly process is fully automated, eliminating the need for manual installation, alignment, and force application. This significantly reduces the intensity of manual labor, solves the problems of time-consuming, labor-intensive, and inefficient traditional manual assembly, and improves the overall automation level and assembly accuracy of the equipment. It ensures the fit between the rubber ring and the valve body, thereby guaranteeing the subsequent sealing performance and operational stability of the butterfly valve.

[0021] Please see Figure 3 and Figure 6A guide assembly 4 is connected to the upper part of the movable roller 304. The guide assembly 4 includes a limiting groove 401. A limiting groove 401 is formed on one side of the movable roller 304, and a sliding roller 402 is installed on the upper side of the movable roller 304. The clamping roller seat 302 is slidably connected to the movable roller 304 through the limiting groove 401, and the length of the limiting groove 401 is greater than the distance between the straight groove 404 and the guide groove 407. A side plate 403 is fixedly connected to one side of the hanger 204. A straight groove 404 is provided in the middle of one side of the side plate 403. A rotating plate 405 is rotatably connected to the middle of one side of the side plate 403, and a stop block 406 is abutted against the lower part of the rotating plate 405. A guide groove 407 is connected to one end of the straight groove 404, and a buffer pad 408 is fixedly connected to one end of the straight groove 404. The guide groove 407 and the straight groove 404 form a right trapezoidal structure, and the width of the guide groove 407 and the straight groove 404 matches the diameter of the sliding roller 402. The specific operation is as follows: During the process of gripping the rubber ring, as the second linear module 301 drives the clamping roller seat 302 to move smoothly, the sliding roller 402 on the movable roller 304 can be synchronously driven to slide directionally within the straight groove 404 of the side plate 403. At the same time, the rotation angle of the movable roller 304 is limited by the limiting groove 401 to prevent the sliding roller 402 from falling out of the straight groove 404 during the movement, thus ensuring the stability and reliability of the clamping action. Subsequently, when the sliding roller 402 pushes against the rotating plate 405, the rotating plate 405 can adaptively rotate upward to avoid it, so as not to affect the action of the movable roller 304 in clamping the rubber ring. Interference ensures a smooth and unobstructed rubber ring gripping process. After the sliding roller 402 passes the rotating plate 405, the rotating plate 405 rotates downwards under its own gravity, automatically and tightly engaging with the stop block 406. Then, during the assembly of the rubber ring into the valve body, as the second linear module 301 drives the clamping roller seat 302 to move back, the sliding roller 402 can be driven to engage with the rotating plate 405 again. At this time, the stop block 406 restricts the downward rotation of the rotating plate 405, allowing the sliding roller 402 to smoothly slide into the upper guide groove 407 under the guidance of the inclined surface of the rotating plate 405. Therefore, in the inner support plate 3... 07. As the rubber ring, which is tightly fitted to the inside of the valve body, gradually loosens between the fixed roller 303 and the movable roller 304, the movable roller 304 can be automatically lifted and moved upwards, providing effective clearance space for the fitting and assembly of the rubber ring and the valve body. This lifting action is automatically completed by mechanical guidance, eliminating the need for additional motors, cylinders, or other independent drive sources. This effectively simplifies the equipment structure and reduces manufacturing and maintenance costs. After the assembly of the rubber ring and the valve body is completed, when the moving component 2 moves the clamping component 3 out from the inside of the valve body, the second linear module... 301 continues to drive the clamping roller seat 302 to translate, which allows the sliding roller 402 to slide to the vertical section of the guide groove 407, and then automatically fall back into the straight groove 404 under the action of gravity. The impact of the sliding roller 402 is flexibly buffered by the buffer pad 408, reducing the wear and tear of the components. When the clamping roller seat 302 is reset in the future, the straight groove 404 can once again stabilize and limit the working height of the movable roller 304, realizing the automatic cyclic reset of the entire clamping and avoidance mechanism. This can meet the production needs of continuous and automated processing of equipment, and greatly improve the assembly efficiency and operation continuity of large-diameter corrosion-resistant butterfly valves.

[0022] Please see Figure 7A positioning component 5 is connected to the middle of the positioning seat 305. The positioning component 5 includes a second torsion spring shaft 501. The second torsion spring shaft 501 is arranged on one side of the side plate 403. One end of the second torsion spring shaft 501 is connected to a swing arm 502. One end of the swing arm 502 is fixedly connected to a drive rod 503. One end of the drive rod 503 is rotatably connected to a first connecting plate 504. The lower end of the first connecting plate 504 is rotatably connected to a transmission plate 505. A fixed shaft 506 is arranged in the middle of the transmission plate 505. The lower end of the fixed shaft 506 is rotatably connected to a second connecting plate 507. The lower end of the second connecting plate 507 is rotatably connected to a positioning pin 508. The fixed shaft 506 is rotatably connected to the hanger 204. The hanger 204 is fixedly connected to the stop block 406. The positioning pin 508 is slidably connected to the positioning seat 305. The center line of the positioning pin 508 coincides with the center line of the positioning seat 305. The specific operation is as follows: During the process of inserting the lower end of the clamping component 3 into the inner side of the rubber ring, because the sliding roller 402 and the swing arm 502 are in a separated state, the second torsion spring shaft 501 will adaptively drive the swing arm 502 to lift and deflect, which in turn drives the transmission plate 505 to rotate around the fixed shaft 506 through the drive rod 503 and the first connecting plate 504. Then, the second connecting plate 507 pulls the positioning pin 508 into the positioning seat 305, effectively avoiding structural interference caused by the protruding positioning pin 508, ensuring smooth and unobstructed rubber ring gripping operation. During the process of gripping the rubber ring, when the second linear module 3... When the clamping roller seat 302 moves horizontally, it simultaneously drives the sliding roller 402 to move to the top of the swing arm 502, pressing the swing arm 502 to a horizontal state. Under the transmission action of the linkage structure, the positioning pin 508 can be smoothly extended from inside the positioning seat 305. Therefore, in the initial stage when the movable roller 304 pushes one end of the rubber ring to make it slightly loose, the extended positioning pin 508 can be accurately inserted into the preset hole of the rubber ring, realizing the initial positioning of the rubber ring and laying the foundation for subsequent precise assembly. Subsequently, during the continuous horizontal movement of the sliding roller 402, the swing arm 502 will always remain in a horizontal state, and the positioning... The extension length of pin 508 remains fixed, ensuring stable and reliable positioning. When transferring the rubber ring to the valve body, first move the positioning pin 508 to the inside of the valve body, then insert it into the clearance hole of the valve body via horizontal translation. This achieves precise one-click alignment between the rubber ring clearance hole and the valve body clearance hole, completely solving the problem of traditional manual alignment deviation and significantly improving the coaxiality and installation accuracy of the butterfly valve assembly. After the inner support plate 307 presses the rubber ring tightly against the inside of the valve body, the rubber ring in the corresponding area of ​​the positioning seat 305 is fixedly positioned. At this point, with the movement of roller 304... Moving upwards will simultaneously remove the sliding roller 402 from the top of the swing arm 502. The second torsion spring shaft 501 will then drive the swing arm 502 to reset, causing the positioning pin 508 to automatically retract into the positioning seat 305. This facilitates the smooth removal of the clamping component 3 from the rubber ring. Furthermore, the extension and retraction of the entire positioning pin 508 is mechanically linked with the movement of the clamping component 3 and the lifting and lowering of the movable roller 304. No additional manual operation or independent drive components are required. This simplifies the equipment operation process and further enhances the automation level and ease of operation of the device, ensuring a continuous and efficient assembly process.

[0023] In summary, the valve body and rubber ring assembly device of this large-diameter corrosion-resistant butterfly valve are used as follows: First, the controller starts the first linear module 201, which drives the drive seat 202 to move horizontally and precisely, thus smoothly transferring the clamping component 3 to the worktable where the rubber ring is placed. Since the distance between the fixed roller 303 and the movable roller 304 is slightly larger than the cross-sectional width of the rubber ring, and the outer arc surfaces of the positioning seat 305 and the inner support plate 307 match the inner arc surface of the rubber ring, when the electric cylinder 203 drives the hanger 204 to move steadily downward under the guidance of the vertical rod 205, the fixed roller 303, the positioning seat 305, and the inner support plate can be smoothly transferred. 307 is smoothly inserted into the inner side of the rubber ring, while the movable roller 304 is located on the outer side of the rubber ring. During this process, since the sliding roller 402 and the swing arm 502 are separated, the second torsion spring shaft 501 will adaptively drive the swing arm 502 to lift and deflect. Then, through the drive rod 503 and the first connecting plate 504, the transmission plate 505 will rotate around the fixed shaft 506. Then, through the second connecting plate 507, the positioning pin 508 will be pulled into the positioning seat 305, effectively avoiding structural interference caused by the protrusion of the positioning pin 508, and ensuring that the rubber ring gripping operation is smooth and unobstructed. Secondly, the second linear module 301 is activated by the controller, and the clamping roller seat 302 moves accordingly. The movable roller 304 smoothly pushes one end of the rubber ring inward. During this process, the sliding roller 402 is also driven to move to the top of the swing arm 502, pressing the swing arm 502 to a horizontal state. Under the transmission action of the linkage structure, the positioning pin 508 can be smoothly extended from the inside of the positioning seat 305. Therefore, in the initial stage when the movable roller 304 pushes one end of the rubber ring and makes it slightly loose, the extended positioning pin 508 can be accurately inserted into the preset hole of the rubber ring, realizing the initial positioning of the rubber ring and laying the foundation for subsequent precise assembly. Subsequently, when the tension generated by the tightening of the rubber ring is greater than the elastic force of the torsion spring on the first torsion spring shaft 306, the inner support plate 307 can be driven to move in the center. With the help of the slotted plate 309 and the limiting post 308, the rotation angle of the inner support plate 307 is precisely limited, ultimately making the rubber ring... The rubber rings are regularly distributed in a concave shape, and their overall outer diameter is smaller than the inner diameter of the valve body of the large-diameter corrosion-resistant butterfly valve. This significantly reduces the risk of jamming or sticking when the rubber rings enter the valve body, and significantly improves the smoothness and convenience of subsequent assembly. During this process, the sliding roller 402 on the movable roller 304 will also be driven to slide in the straight groove 404 of the side plate 403. At the same time, the rotation angle of the movable roller 304 is limited by the limiting groove 401 to prevent the sliding roller 402 from falling out of the straight groove 404 during the movement, thus ensuring the stability and reliability of the clamping action. Subsequently, when the sliding roller 402 pushes against the rotating plate 405, the rotating plate 405 can rotate upward adaptively to avoid it, without interfering with the action of the movable roller 304 clamping the rubber ring, ensuring that the rubber ring gripping process is smooth and unobstructed. After the sliding roller 402 passes the rotating plate 405, the rotating plate 405 rotates downward under its own gravity and automatically fits tightly with the stop block 406. Next, the clamped rubber ring is precisely transferred to the valve body on the positioning fixture by the moving component 2. Then, the positioning pin 508 is inserted into the clearance hole of the valve body by horizontal translation, which realizes one-click precise docking between the clearance hole of the rubber ring and the clearance hole of the valve body. This completely solves the problem of traditional manual alignment deviation and greatly improves the coaxiality and installation accuracy of the butterfly valve assembly. At the same time, with the horizontal movement of the drive seat 202, the positioning seat 305 stably squeezes and adheres the rubber ring to the inside of the valve body, and the protrusion on the outside of the rubber ring also achieves precise engagement with the valve body. At this time, the second linear module 301 is controlled to drive the clamping roller seat 302 to move back, and the rubber ring is relaxed. The first torsion spring shaft 306 then drives the inner support plate 307 to open outward, initially pressing the rubber ring to the inside of the valve body. At the same time, it also drives The sliding roller 402 and the rotating plate 405 are in contact with each other. At this time, the stop block 406 will restrict the rotating plate 405 from rotating downward, so that the sliding roller 402 can smoothly slide into the upper guide groove 407 under the guidance of the inclined surface of the rotating plate 405. Therefore, as the inner support plate 307 holds the rubber ring tightly against the inside of the valve body and the rubber ring between the fixed roller 303 and the movable roller 304 gradually loosens, the movable roller 304 can be automatically driven to lift and move upward, providing effective clearance space for the rubber ring to fit and assemble with the valve body. During this process, the sliding roller 402 will also move away from the top of the swing arm 502. The second torsion spring shaft 501 then drives the swing arm 502 to reset, driving the positioning pin 508 to automatically retract into the positioning seat 305, which facilitates the smooth removal of the clamping component 3 from the rubber ring. Then, after the movable roller 304 moves up, the fixed roller 303 continues to press the rubber ring against the inner wall of the valve body, achieving a complete and tight fit between the rubber ring and the valve body. The entire assembly process is fully automated, eliminating the need for manual installation, alignment, and force application. This significantly reduces the intensity of manual labor, solves the problems of time-consuming, labor-intensive, and inefficient traditional manual assembly, and improves the overall automation level and assembly accuracy of the equipment, ensuring the fit between the rubber ring and the valve body. Finally, after the assembly of the rubber ring and the valve body is completed, the moving component 2 drives the clamping component 3 to move upward, removing it from the inside of the rubber ring. At this time, since the rubber ring is already engaged with the valve body, it will not be pulled out. Then, the second linear module 301 continues to drive the clamping roller seat 302 to move horizontally, allowing the sliding roller 402 to slide to the vertical section of the guide groove 407. Then, under the action of gravity, it automatically falls back into the straight groove 404. The impact of the sliding roller 402 is flexibly buffered by the buffer pad 408, reducing the wear and tear of the components. When the clamping roller seat 302 is reset later, the straight groove 404 can once again stably limit the working height of the movable roller 304, realizing the automatic cyclic reset of the entire clamping and avoidance mechanism. This can meet the production needs of continuous and automated processing of equipment, and greatly improve the assembly efficiency and operation continuity of large-diameter corrosion-resistant butterfly valves.

[0024] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A device for assembling the valve body and rubber ring of a large-diameter corrosion-resistant butterfly valve, characterized in that, The assembly includes a frame (1) and a clamping assembly (3). A moving assembly (2) is located on the upper part of the frame (1), and the clamping assembly (3) is located on the lower part of the moving assembly (2). The clamping assembly (3) includes a second linear module (301). A roller holder (302) is located at the output end of the second linear module (301), and a fixed roller (303) is fixedly connected to the bottom of the roller holder (302). A movable roller (304) is slidably connected inside the roller holder (302). The moving assembly (2)... A positioning seat (305) is fixedly connected to the bottom, and a first torsion spring shaft (306) is symmetrically arranged at both ends of the positioning seat (305). An inner support plate (307) is installed at the end of the first torsion spring shaft (306). A limit post (308) is fixedly connected to one end of the top of the inner support plate (307), and a slotted plate (309) is sleeved on the outside of the limit post (308). A guide assembly (4) is connected to the upper part of the movable roller (304), and a positioning assembly (5) is connected to the middle part of the positioning seat (305).

2. The device for assembling the valve body and rubber ring of a large-diameter corrosion-resistant butterfly valve according to claim 1, characterized in that, The inner support plate (307) is arc-shaped, and the radius of curvature of the outer arc of the inner support plate (307) is equal to the radius of curvature of the outer arc of the positioning seat (305).

3. The device for assembling the valve body and rubber ring of a large-diameter corrosion-resistant butterfly valve according to claim 1, characterized in that, The slotted plate (309) is fixedly connected to the positioning seat (305), and two slotted plates (309) are symmetrically arranged about the center line of the positioning seat (305).

4. The device for assembling the valve body and rubber ring of a large-diameter corrosion-resistant butterfly valve according to claim 1, characterized in that, The moving component (2) includes a first linear module (201). The first linear module (201) is mounted on the top of the frame (1), and the output end of the first linear module (201) is connected to a drive seat (202). An electric cylinder (203) is fixedly connected to the center of the top of the drive seat (202), and the output end of the electric cylinder (203) is connected to a hanger (204). Vertical rods (205) are symmetrically arranged on the top of the hanger (204), and the vertical rods (205) are slidably connected to the drive seat (202).

5. The device for assembling the valve body and rubber ring of a large-diameter corrosion-resistant butterfly valve according to claim 4, characterized in that, The guide assembly (4) includes a limiting groove (401). A limiting groove (401) is provided on one side of the movable roller (304), and a sliding roller (402) is installed on the upper side of the movable roller (304). A side plate (403) is fixedly connected to one side of the hanger (204), and a straight groove (404) is provided in the middle of one side of the side plate (403). A rotating plate (405) is rotatably connected to the middle of one side of the side plate (403), and a stop block (406) abuts against the lower part of the rotating plate (405). A guide groove (407) is connected to one end of the straight groove (404), and a buffer pad (408) is fixedly connected to one end of the straight groove (404).

6. The device for assembling the valve body and rubber ring of a large-diameter corrosion-resistant butterfly valve according to claim 5, characterized in that, The clamping roller seat (302) is slidably connected to the movable roller (304) through the limiting groove (401), and the length of the limiting groove (401) is greater than the distance between the straight groove (404) and the guide groove (407).

7. The device for assembling the valve body and rubber ring of a large-diameter corrosion-resistant butterfly valve according to claim 5, characterized in that, The guide groove (407) and the straight groove (404) form a right trapezoidal structure, and the width of the guide groove (407) and the straight groove (404) matches the diameter of the sliding roller (402).

8. The device for assembling the valve body and rubber ring of a large-diameter corrosion-resistant butterfly valve according to claim 5, characterized in that, The positioning component (5) includes a second torsion spring shaft (501). The second torsion spring shaft (501) is disposed on one side of the side plate (403), and one end of the second torsion spring shaft (501) is connected to a swing arm (502). One end of the swing arm (502) is fixedly connected to a drive rod (503), and one end of the drive rod (503) is rotatably connected to a first connecting plate (504). The lower end of the first connecting plate (504) is rotatably connected to a transmission plate (505), and a fixed shaft (506) is disposed in the middle of the transmission plate (505). The lower end of the fixed shaft (506) is rotatably connected to a second connecting plate (507), and the lower end of the second connecting plate (507) is rotatably connected to a positioning pin (508).

9. The device for assembling the valve body and rubber ring of a large-diameter corrosion-resistant butterfly valve according to claim 8, characterized in that, The fixed shaft (506) is rotatably connected to the hanger (204), and the hanger (204) is fixedly connected to the stop block (406).

10. The device for assembling the valve body and rubber ring of a large-diameter corrosion-resistant butterfly valve according to claim 8, characterized in that, The positioning pin (508) is slidably connected to the positioning seat (305), and the center line of the positioning pin (508) coincides with the center line of the positioning seat (305).

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