A screw type fixing jig for seal ring processing

Abstract

The utility model relates to fixing jig technical field especially discloses a screw type fixing jig for sealing ring processing, including base, the blocking structure and a plurality of positioning holes of setting on the base, the end face of outside world sealing body spare butches on the base, and the blocking structure is used for blocking the outside of outside world sealing body spare and touching, and a plurality of fasteners of outside world respectively via a plurality of positioning holes lock sealing body spare and fix on the base.

Description

Technical Field

[0001] This utility model relates to the field of fixing fixture technology, and in particular discloses a screw-type fixing fixture for processing sealing rings. Background Technology

[0002] In the process of processing sealing rings, the stability and applicability of the fixing fixture are crucial. Traditional fixing fixtures often have problems such as inconvenient adjustment of clamping diameter, poor adaptability to sealing rings of different specifications, and difficulty in accurately controlling clamping pressure. Moreover, existing fixtures are prone to loosening after adjustment, affecting processing accuracy. At the same time, the fixing method of the sealing ring may also cause damage to the surface of the sealing ring due to the lack of a buffer structure. Therefore, there is an urgent need for a fixing fixture for processing sealing rings that can flexibly adjust the clamping diameter, lock stably, accurately feedback the clamping pressure, and have protective functions. Utility Model Content

[0003] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a screw-type fixing fixture for processing sealing rings.

[0004] To achieve the above objectives, this utility model provides a screw-type fixing fixture for processing sealing rings, comprising a base, a stop structure disposed on the base, and multiple positioning holes; the end face of the external sealing body abuts against the base, the stop structure is used to stop the contact with the outer surface of the external sealing body, and multiple external fasteners lock and fix the sealing body to the base through multiple positioning holes.

[0005] The stop structure is a stop ring, which is arranged around the central axis of the base, and the inner ring side of the stop ring surrounds and abuts against the annular outer surface of the sealing body.

[0006] The stop ring is a circular ring or a polygonal ring.

[0007] The blocking structure consists of multiple blocking strips arranged around the central axis of the base, with the inner surfaces of the multiple blocking strips abutting against the outer surfaces of the sealing body.

[0008] The stop strips are arc-shaped, and multiple stop strips are arranged to form a circular or polygonal ring.

[0009] The stop structure consists of multiple sets of wedge blocks. An adjustment component is provided at the connection between two adjacent wedge blocks. A radial locking device that cooperates with the adjustment component is provided on the outer wall of the wedge block. Multiple sets of wedge blocks together form a variable-diameter annular clamping cavity. After the external sealing body is placed into the annular clamping cavity, the fastener passes through the positioning hole to lock and fix the sealing body to the base.

[0010] This screw-type fixing fixture uses multiple sets of wedge-shaped blocks that abut each other to form a base. An adjusting component at the wedge block connection can adjust the diameter of the annular clamping cavity. Combined with a radial locking device on the outer wall, it can clamp and fix sealing rings of different diameters. Multiple positioning holes on the base allow for further fixing of the sealing rings with fasteners, meeting the processing requirements of sealing rings of different specifications. In practice, the size of the annular clamping cavity is first adjusted according to the sealing ring diameter. After the sealing ring is placed in, it is initially fixed using the radial locking device. Then, fasteners are passed through the positioning holes to install the sealing ring onto the base. The wedge block structure and the coordination of the adjusting component achieve stable clamping and precise positioning of the sealing ring, making it suitable for fixing operations during sealing ring processing, improving the versatility and reliability of the process.

[0011] The adjustment assembly includes an adjustment groove formed on the contact surface of adjacent wedge blocks, and an adjustment rod passing through the adjustment groove. One end of each wedge block has an adjustment groove, and the other end is fixedly provided with an adjustment rod. The end of the wedge block with the adjustment groove is connected to the end of another set of wedge blocks with the adjustment rod. The adjustment rod is slidably disposed in the adjustment groove to drive the adjacent wedge blocks to move radially to change the diameter of the annular clamping cavity.

[0012] This adjustment assembly utilizes a mating structure of adjustment grooves and adjustment rods on the contact surfaces of adjacent wedge blocks. One end of each wedge block has an adjustment rod fixed to it, while the other end has an adjustment groove. When the two blocks are in contact, the adjustment rod slides within the groove, causing adjacent wedge blocks to move radially and thus changing the diameter of the annular clamping cavity. This design allows for precise adjustment of the clamping cavity size to accommodate sealing rings of different sizes. In practice, wedge blocks with adjustment rods and wedge blocks with adjustment grooves are sequentially connected to form a base. During installation, pushing or pulling the wedge blocks causes the adjustment rods to slide within the grooves, simultaneously adjusting the radial positions of multiple sets of wedge blocks. Once the diameter of the annular clamping cavity matches the sealing ring, a radial locking device is used to fix the wedge block position, achieving rapid positioning and adaptive diameter adjustment of the sealing ring. This design is convenient to operate, highly accurate, and effectively improves the fixture's compatibility with sealing rings of different sizes.

[0013] The radial locking device is disposed on the outer sidewall of the wedge block adjusting groove. The radial locking device includes a locking seat disposed on the outer sidewall and a locking bolt passing through the locking seat. The end of the locking bolt can abut against the adjusting assembly to limit the radial movement of the wedge block.

[0014] The radial locking device is located on the outer sidewall of the wedge block adjustment groove. It consists of a locking seat and a locking bolt passing through it. The bolt end can abut against the adjustment component to restrict the radial movement of the wedge block, achieving reliable locking after adjusting the diameter of the annular clamping cavity. In practice, the wedge block is first slid along the adjustment component to adapt the diameter of the clamping cavity to the sealing ring. At this time, the locking seat is positioned to the corresponding position along with the wedge block. The locking bolt is then tightened so that its end abuts against the adjustment rod or the edge of the adjustment groove. The wedge block is fixed by the extrusion force of the threaded drive, preventing changes in the diameter of the clamping cavity due to vibration or other factors during processing, and ensuring the sealing ring is firmly fixed. This structure achieves precise positioning through a simple bolt locking method, is easy to operate, and has adjustable locking force. It ensures the flexibility of fixture adjustment and provides reliable clamping stability during processing, improving the reliability of sealing ring fixation and processing accuracy.

[0015] The adjusting rod is provided with multiple sets of adjusting through holes evenly distributed along its length. The adjusting groove sidewall of the wedge block is provided with a positioning blind hole, which is connected to the locking seat. The end of the locking bolt can pass through the positioning blind hole and be inserted into the adjusting through hole to achieve radial locking of the adjusting rod.

[0016] This design features multiple sets of evenly distributed adjustment through holes along the length of the adjusting rod. Simultaneously, a positioning blind hole communicating with the locking seat is opened on the side wall of the wedge block adjustment groove, allowing the locking bolt to pass through the positioning blind hole and insert into the adjustment through hole, achieving radial locking of the adjusting rod. Through the cooperation of the adjustment through hole and the positioning blind hole, the axial force of the locking bolt is converted into radial limiting of the adjusting rod. Compared to simply pressing against the adjusting component, this method offers higher locking accuracy and is less prone to slippage. Multiple sets of adjustment through holes also allow for graded adjustment of the clamping cavity diameter, resulting in more precise positioning when adapting to different sizes of sealing rings. In practice, the wedge block is first pushed to slide the adjusting rod within the adjustment groove until the clamping cavity diameter matches the sealing ring. At this point, the positioning blind hole aligns with the corresponding adjustment through hole on the adjusting rod. The locking bolt is then inserted through the locking seat and the positioning blind hole into the adjustment through hole. After tightening the bolt, the position of the adjusting rod is rigidly locked through the hole-shaft cooperation, preventing radial movement of the wedge block. This locking structure utilizes the principle of mechanical positioning, which can achieve precise graded adjustment of the diameter by adjusting the through hole, and provide reliable anti-displacement capability through the cooperation of bolts and holes. It is suitable for sealing ring processing scenarios that require high-frequency adjustment or high-precision fixing, effectively improving the practicality and stability of the fixture.

[0017] The wedge block includes a first base and a first boss disposed on the outer periphery of the first base. The inner side wall of the first boss is provided with an arc-shaped surface that is adapted to the external sealing body. The positioning hole is disposed on the bottom surface of the first base. The external sealing body is placed on the bottom surface of the first base and locked to the positioning hole by fasteners. The first boss abuts against the outer side wall of the external sealing body to prevent shaking.

[0018] The wedge-shaped block structure includes a first base and a first protrusion on the outer periphery. The inner arc-shaped surface can fit against the outer wall of the sealing ring, and the positioning hole on the bottom surface fixes the sealing ring with fasteners. The side wall of the protrusion abuts against the sealing ring to prevent shaking. The arc-shaped surface fitting design with the arc surface of the outer wall of the sealing ring increases the contact area and evenly distributes the clamping force, reducing local extrusion deformation. The limiting structure formed by the first protrusion can restrict the displacement of the sealing ring from the side, and together with the bottom fasteners, achieve three-dimensional fixation, improving stability.

[0019] The inner arc-shaped surface of the first boss is provided with an elastic buffer layer, which is made of silicone and has anti-slip texture on its surface.

[0020] The silicone buffer layer has excellent elastic deformation capability, which allows it to adaptively conform to the outer wall of the sealing ring during clamping, avoiding indentations or deformation caused by rigid contact, while also buffering vibrations during processing. The anti-slip textured surface increases the coefficient of friction, preventing the sealing ring from slipping in the clamping cavity and improving the reliability of the fixation. First, the elastic buffer layer is fixed to the inner arc-shaped surface of the first boss. When installing the sealing ring, the buffer layer tightly conforms to the outer wall of the sealing ring through elastic compression.

[0021] The end of the locking bolt is provided with an elastic pressure plate, and the surface of the elastic pressure plate is provided with anti-slip teeth to increase the frictional resistance with the adjusting rod.

[0022] The elastic pressure plate, through its own deformation, tightly conforms to the surface of the adjusting rod, and the anti-slip teeth form a mechanical engagement with the inner wall of the adjusting through hole. Compared to simply tightening the bolt end, this significantly increases frictional resistance, preventing radial displacement of the adjusting rod due to vibration. Simultaneously, the elastic buffer prevents surface damage to the adjusting rod caused by rigid bolt compression. In practice, the elastic pressure plate is fixed to the end of the locking bolt. After the bolt passes through the positioning blind hole and is inserted into the adjusting through hole, tightening the bolt causes the elastic pressure plate to undergo elastic deformation under pressure. The anti-slip teeth on its surface embed into the inner wall of the adjusting rod's through hole, utilizing the meshing friction of the teeth and the tension of the elastic plate to form a double lock. Even in high-frequency vibration machining environments, this ensures stable positioning of the adjusting rod. This structure, through the combination of elastic buffering and anti-slip teeth, guarantees locking accuracy and improves connection reliability. It is suitable for machining scenarios requiring a constant clamping cavity diameter over long periods, effectively reducing machining errors caused by bolt loosening.

[0023] The inner wall of the annular clamping cavity is fitted with a pressure-sensitive diaphragm, which is electrically connected to an external control system to provide real-time feedback of the clamping pressure data of the sealing ring.

[0024] By using a pressure-sensitive diaphragm to monitor the clamping force in real time, the system prevents loosening of the sealing ring due to insufficient pressure or deformation damage caused by excessive pressure. The external control system can automatically adjust or issue warnings based on feedback data, achieving intelligent clamping control and improving the stability and safety of the processing. In practice, the pressure-sensitive diaphragm is evenly embedded within the arc-shaped surface of multiple wedge blocks. The diaphragm wires are connected to the external control system. After installing the sealing ring and adjusting the clamping cavity diameter, the system collects the pressure signal transmitted by the diaphragm in real time, displaying the clamping pressure value digitally or graphically. An automatic alarm is triggered when the pressure exceeds a preset threshold. Operators can fine-tune the adjustment components or locking bolts based on the data feedback to ensure the clamping pressure remains within a reasonable range. This pressure monitoring structure combines mechanical clamping with intelligent sensing, making it suitable for automated production lines of high-precision sealing rings and also providing data support for manual operations, effectively preventing damage caused by improper clamping pressure.

[0025] The radial locking device also includes a silicone pad located between the locking seat and the outer wall of the wedge block. When the locking bolt is tightened, the silicone pad is compressed to increase friction and prevent loosening.

[0026] This radial locking device incorporates a silicone pad between the locking seat and the outer wall of the wedge block. When the locking bolt is tightened, the silicone pad is compressed to enhance friction and prevent loosening. The silicone pad is elastic and compressible; under pressure, it fills the tiny gap between the locking seat and the wedge block, increasing the contact area and thus enhancing friction. Simultaneously, the viscous properties of the silicone pad suppress loosening caused by bolt vibration. Compared to simple rigid contact, this design offers a more significant anti-loosening effect and buffers the axial pressure on the bolt.

[0027] The surface of the adjusting rod is coated with a wear-resistant coating.

[0028] The wear-resistant coating effectively resists friction and wear against the inner wall of the adjustment groove during adjustment, extending the service life of the adjustment rod while maintaining surface smoothness to ensure smooth sliding. The coating also prevents oxidation and corrosion of the metal surface, avoiding the impact of rust or debris on adjustment accuracy. In practice, processes such as electroless nickel plating, nitriding, or spraying with ceramic-based wear-resistant materials are used to form a uniform coating on the adjustment rod surface. The thickness is controlled at 5-20 micrometers to balance wear resistance and dimensional accuracy. The coating hardness can reach HV800-1200 (approximately HRC60-70), far exceeding the hardness of the steel substrate. After installation, when the adjustment rod slides in the adjustment groove, the wear-resistant coating acts as the contact surface to bear the frictional load. Even with long-term high-frequency use, the coating wear rate is much lower than that of the bare steel surface, increasing the adjustment rod's lifespan by 3-5 times. This design ensures both the flexibility of adjusting the diameter of the annular clamping cavity and maintains the long-term stability of adjustment accuracy through wear protection. It is particularly suitable for mass production scenarios requiring frequent adjustments to fixture dimensions, reducing maintenance frequency due to component wear and lowering production costs.

[0029] The beneficial effects of this utility model are as follows: This utility model uses multiple sets of wedge blocks, an adjusting assembly, and a radial locking device to form a variable-diameter annular clamping cavity. The principle lies in using the sliding cooperation between the adjusting rod and the adjusting groove to achieve radial adjustment of the clamping cavity diameter. The position is then locked by the mechanical positioning of the locking bolt and the adjusting through-hole, and the elastic anti-loosening structure of the silicone pad. Simultaneously, the arc-shaped surface of the wedge blocks, combined with an elastic buffer layer, achieves flexible clamping of the sealing ring, and a pressure-sensitive diaphragm monitors the clamping pressure in real time. Its beneficial effects include: precise adaptation to sealing rings of different specifications; ensuring the accuracy and stability of diameter adjustment through graded adjustment and rigid locking; elastic buffering and anti-slip design preventing sealing ring deformation and improving fixing reliability; pressure monitoring enabling intelligent processing control; and a wear-resistant coating extending the service life of components. The overall structure achieves an organic combination of versatility, stability, precision, and intelligence, effectively improving the processing efficiency and quality of sealing rings. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0031] Figure 2 This is an exploded view of the entire utility model;

[0032] Figure 3 This is a cross-sectional view of the wedge block of this utility model;

[0033] Figure 4 for Figure 3 A magnified structural diagram of part A in the middle;

[0034] Figure 5 This is a schematic diagram of the base structure of this utility model;

[0035] Figure 6 This is a schematic diagram of the wedge block of this utility model.

[0036] The reference numerals in the figures include:

[0037] 1. Base; 2. Positioning hole; 3. Wedge block; 4. Adjustment assembly; 5. Radial locking device; 6. Annular clamping cavity; 7. Adjustment groove; 8. Adjustment rod; 9. Locking seat; 11. Locking bolt; 12. Adjustment through hole; 13. Positioning blind hole; 14. First base; 15. First boss; 16. Arc-shaped surface; 17. Elastic buffer layer; 18. Pressure-sensitive diaphragm; 19. Silicone pad; 22. Elastic pressure plate; 100. Stop ring. Detailed Implementation

[0038] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0039] Please see Figures 1 to 6 As shown, a screw-type fixing fixture for processing sealing rings according to the present invention includes a base 1, a stop structure disposed on the base 1, and a plurality of positioning holes 2; the end face of the external sealing body abuts against the base 1, the stop structure is used to stop the contact with the outer surface of the external sealing body, and a plurality of external fasteners respectively lock and fix the sealing body on the base 1 through the plurality of positioning holes 2.

[0040] In Example 1, the stopping structure is a stop ring 100, which is arranged around the central axis of the base 1, and the inner ring side of the stop ring 100 surrounds and abuts against the annular outer surface of the sealing body.

[0041] The stop ring 100 is a circular ring or a polygonal ring.

[0042] In Example 2, the blocking structure consists of multiple blocking strips arranged around the central axis of the base 1, with the inner surfaces of the multiple blocking strips respectively abutting against the outer surfaces of the sealing body.

[0043] The stop strips are arc-shaped, and multiple stop strips are arranged to form a circular or polygonal ring.

[0044] In embodiment 3, the stop structure consists of multiple sets of wedge blocks 3. An adjustment component 4 is provided at the connection between two adjacent wedge blocks 3. A radial locking device 5 that cooperates with the adjustment component 4 is provided on the outer wall of the wedge block 3. Multiple sets of wedge blocks 3 together form a variable diameter annular clamping cavity 6. After the external sealing body is placed into the annular clamping cavity 6, the fastener passes through the positioning hole 2 to lock and fix the sealing body to the base 1.

[0045] This screw-type fixing fixture consists of a base 1 formed by multiple sets of wedge-shaped blocks 3 that abut each other end-to-end. An adjusting component 4 at the connection of the wedge-shaped blocks 3 can adjust the diameter of the annular clamping cavity 6. Combined with the radial locking device 5 on the outer wall, it can clamp and fix sealing rings of different diameters. Multiple positioning holes 2 on the base 1 can further secure the sealing rings with fasteners, meeting the processing requirements of sealing rings of different specifications. In practice, the size of the annular clamping cavity 6 is first changed by adjusting the adjusting component 4 according to the diameter of the sealing ring. After the sealing ring is placed in, it is initially fixed with the radial locking device 5. Then, the sealing ring is installed on the base 1 by fasteners passing through the positioning holes 2. The structural design of the wedge-shaped blocks 3 and the cooperation of the adjusting component 4 achieve stable clamping and precise positioning of the sealing ring, making it suitable for fixing operations during sealing ring processing, improving the versatility and reliability of the processing.

[0046] The adjustment assembly 4 includes an adjustment groove 7 formed on the abutment surface of adjacent wedge blocks 3, and an adjustment rod 8 passing through the adjustment groove 7. One end of the wedge block 3 has an adjustment groove 7, and the other end is fixedly provided with an adjustment rod 8. The end of the wedge block 3 with the adjustment groove 7 is connected to the end of another set of wedge blocks 3 with the adjustment rod 8. The adjustment rod 8 is slidably disposed in the adjustment groove 7 to drive the adjacent wedge blocks 3 to move radially to change the diameter of the annular clamping cavity 6.

[0047] The adjustment component 4 utilizes a mating structure between an adjustment groove 7 and an adjustment rod 8 on the contact surface of adjacent wedge blocks 3. One end of the wedge block 3 is fixed to the adjustment rod 8, while the other end has the adjustment groove 7. When the two are in contact, the adjustment rod 8 can slide within the adjustment groove 7, causing adjacent wedge blocks 3 to move radially, thereby changing the diameter of the annular clamping cavity 6. This design allows for precise adjustment of the clamping cavity size to accommodate sealing rings of different sizes. In practice, wedge blocks 3 with adjustment rods 8 and wedge blocks 3 with adjustment grooves 7 are sequentially connected to form a base 1. During installation, pushing or pulling the wedge blocks 3 causes the adjustment rod 8 to slide within the adjustment groove 7, simultaneously adjusting the radial position of multiple sets of wedge blocks 3. Once the diameter of the annular clamping cavity 6 matches the sealing ring, the position of the wedge blocks 3 is fixed by a radial locking device 5, achieving rapid positioning and adaptive diameter adjustment of the sealing ring. This design is convenient to operate and offers high adjustment accuracy, effectively improving the fixture's compatibility with sealing rings of different sizes.

[0048] The radial locking device 5 is disposed on the outer sidewall of the adjusting groove 7 of the wedge block 3. The radial locking device 5 includes a locking seat 9 disposed on the outer sidewall and a locking bolt 11 passing through the locking seat 9. The end of the locking bolt 11 can abut against the adjusting assembly 4 to limit the radial movement of the wedge block 3.

[0049] The radial locking device 5 is located on the outer sidewall of the adjusting groove 7 of the wedge block 3. It consists of a locking seat 9 and a locking bolt 11 passing through it. The end of the bolt can abut against the adjusting component 4 to restrict the radial movement of the wedge block 3, and can reliably lock after adjusting the diameter of the annular clamping cavity 6. In specific implementation, the wedge block 3 is first slid by adjusting the component 4 to adapt the diameter of the clamping cavity to the sealing ring. At this time, the locking seat 9 is positioned to the corresponding position with the wedge block 3. The locking bolt 11 is then tightened so that its end abuts against the adjusting rod 8 or the edge of the adjusting groove 7. The wedge block 3 is fixed by the extrusion force of the threaded drive, preventing the diameter of the clamping cavity from changing due to vibration or other factors during processing, and ensuring that the sealing ring is firmly fixed. This structure achieves precise positioning through a simple bolt locking method. It is easy to operate and the locking force is adjustable. It not only ensures the flexibility of the fixture adjustment, but also provides reliable clamping stability during processing, improving the reliability of the sealing ring fixation and the processing accuracy.

[0050] The adjusting rod 8 is provided with multiple sets of adjusting through holes 12 evenly distributed along its length. The adjusting groove 7 of the wedge block 3 is provided with a positioning blind hole 13. The positioning blind hole 13 is connected to the locking seat 9. The end of the locking bolt 11 can pass through the positioning blind hole 13 and be inserted into the adjusting through hole 12 to achieve radial locking of the adjusting rod 8.

[0051] This design features multiple sets of evenly distributed adjustment through holes 12 along the length of the adjustment rod 8. Simultaneously, a positioning blind hole 13 communicating with the locking seat 9 is opened on the side wall of the adjustment groove 7 of the wedge block 3, allowing the locking bolt 11 to pass through the positioning blind hole 13 and insert into the adjustment through hole 12, thus achieving radial locking of the adjustment rod 8. Through the cooperation of the adjustment through hole 12 and the positioning blind hole 13, the axial force of the locking bolt 11 is converted into radial limiting of the adjustment rod 8. Compared to simply pressing against the adjustment component 4, this method offers higher locking accuracy and is less prone to slippage. Furthermore, the multiple sets of adjustment through holes 12 allow for graded adjustment of the clamping cavity diameter, resulting in more precise positioning when adapting to different specifications of sealing rings. In practice, the wedge block 3 is first pushed to slide the adjusting rod 8 within the adjusting groove 7 until the diameter of the clamping cavity matches the sealing ring. At this point, the positioning blind hole 13 aligns with the corresponding adjusting through hole 12 on the adjusting rod 8. The locking bolt 11 is then inserted through the locking seat 9 and the positioning blind hole 13 into the adjusting through hole 12. After tightening the bolt, the position of the adjusting rod 8 is rigidly locked through the hole-shaft cooperation, preventing the wedge block 3 from moving radially. This locking structure utilizes the mechanical positioning principle, enabling precise graded adjustment of the diameter through the adjusting through hole 12, and providing reliable anti-displacement capability through the bolt-hole cooperation. It is suitable for sealing ring processing scenarios requiring high-frequency adjustment or high-precision fixing, effectively improving the practicality and stability of the fixture.

[0052] The wedge block 3 includes a first base 14 and a first boss 15 disposed on the outer periphery of the first base 14. The inner side wall of the first boss 15 is provided with an arc-shaped surface 16 that is adapted to the external sealing body. The positioning hole 2 is disposed on the bottom surface of the first base 14. The external sealing body is placed on the bottom surface of the first base 14 and locked to the positioning hole 2 by fasteners. The first boss 15 abuts against the outer side wall of the external sealing body to prevent shaking.

[0053] The wedge-shaped block 3 structure includes a first base 14 and a first protrusion 15 on the outer periphery. The inner arc-shaped surface 16 can fit against the outer wall of the sealing ring. The bottom positioning hole 2 fixes the sealing ring with fasteners. The side wall of the protrusion abuts against the sealing ring to prevent shaking. The arc-shaped surface 16 fits against the arc surface of the outer wall of the sealing ring, which can increase the contact area and evenly distribute the clamping force, reducing local compression deformation. The limiting structure formed by the first protrusion 15 can limit the displacement of the sealing ring from the side, and together with the bottom fasteners, achieve three-dimensional fixation and improve stability.

[0054] The inner arc-shaped surface 16 of the first boss 15 is provided with an elastic buffer layer 17, which is made of silicone and has anti-slip texture on its surface.

[0055] The silicone buffer layer has good elastic deformation capability, which can adaptively conform to the outer wall of the sealing ring during clamping, avoiding indentations or deformation caused by rigid contact, and buffering vibrations during processing; the anti-slip texture on the surface increases the coefficient of friction, preventing the sealing ring from slipping in the clamping cavity and improving the reliability of fixation. First, the elastic buffer layer 17 is fixed on the inner arc-shaped surface 16 of the first boss 15. When installing the sealing ring, the buffer layer tightly conforms to the outer wall of the sealing ring through elastic compression.

[0056] The end of the locking bolt 11 is provided with an elastic pressure plate 22, and the surface of the elastic pressure plate 22 is provided with anti-slip teeth to increase the frictional resistance with the adjusting rod 8.

[0057] The elastic pressure plate 22, through its own deformation, tightly conforms to the surface of the adjusting rod 8. Its anti-slip teeth mechanically engage with the inner wall of the adjusting through-hole 12. Compared to simply tightening the bolt end, this significantly increases frictional resistance, preventing radial displacement of the adjusting rod 8 due to vibration. Simultaneously, the elastic buffer prevents surface damage to the adjusting rod 8 caused by rigid bolt compression. In practice, the elastic pressure plate 22 is fixed to the end of the locking bolt 11. After the bolt passes through the positioning blind hole 13 and inserts into the adjusting through-hole 12, tightening the bolt causes the elastic pressure plate 22 to undergo elastic deformation under pressure. Its anti-slip teeth embed into the inner wall of the adjusting rod 8's through-hole, utilizing the meshing friction of the teeth and the tension of the elastic plate to form a double lock. Even in high-frequency vibration processing environments, this ensures stable positioning of the adjusting rod 8. This structure, through the combination of elastic buffer and anti-slip teeth, guarantees locking accuracy and improves connection reliability. It is suitable for processing scenarios requiring a constant clamping cavity diameter over long periods, effectively reducing processing errors caused by bolt loosening.

[0058] The inner wall of the annular clamping cavity 6 is fitted with a pressure-sensitive diaphragm 18, which is electrically connected to an external control system to provide real-time feedback of the clamping pressure data of the sealing ring.

[0059] The pressure-sensitive diaphragm 18 monitors the clamping force in real time, preventing loosening of the sealing ring due to insufficient pressure or deformation damage caused by excessive pressure. The external control system can automatically adjust or issue warnings based on feedback data, achieving intelligent clamping control and improving the stability and safety of the processing. In practice, the pressure-sensitive diaphragm 18 is evenly embedded in the arc-shaped surface 16 inside multiple sets of wedge blocks 3. The diaphragm wire is connected to the external control system. After installing the sealing ring and adjusting the clamping cavity diameter, the system collects the pressure signal transmitted by the diaphragm in real time, displaying the clamping pressure value in digital or graphical form. An automatic alarm is triggered when the pressure exceeds a preset threshold. Operators can fine-tune the adjustment component 4 or the locking bolt 11 based on data feedback to ensure the clamping pressure remains within a reasonable range. This pressure monitoring structure combines mechanical clamping with intelligent sensing, making it suitable for automated production lines of high-precision sealing rings and providing data support for manual operations, effectively preventing damage caused by improper clamping pressure.

[0060] The radial locking device 5 also includes a silicone pad 19, which is located between the locking seat 9 and the outer wall of the wedge block 3. When the locking bolt 11 is tightened, the silicone pad 19 is compressed to enhance friction and prevent loosening.

[0061] The radial locking device 5 adds a silicone pad 19 between the locking seat 9 and the outer wall of the wedge block 3. When the locking bolt 11 is tightened, the silicone pad 19 is compressed to enhance friction and prevent loosening. The silicone pad 19 is elastic and compressible. When compressed, it can fill the tiny gap between the locking seat 9 and the wedge block 3, increasing the contact area and enhancing friction. At the same time, the viscous properties of silicone inhibit loosening caused by bolt vibration. Compared with simple rigid contact, the anti-loosening effect is more significant and it can buffer the axial pressure of the bolt.

[0062] The surface of the adjusting rod 8 is provided with a wear-resistant coating.

[0063] The wear-resistant coating effectively resists friction and wear against the inner wall of the adjustment groove 7 during adjustment, extending the service life of the adjustment rod 8 while maintaining surface smoothness to ensure smooth sliding. The coating also prevents oxidation and corrosion of the metal surface, avoiding the impact of rust or debris on adjustment accuracy. Specifically, processes such as electroless nickel plating, nitriding, or spraying with ceramic-based wear-resistant materials are used to form a uniform coating on the surface of the adjustment rod 8. The thickness is controlled at 5-20 micrometers to balance wear resistance and dimensional accuracy. The coating hardness can reach HV800-1200 (approximately HRC60-70), far exceeding the hardness of the steel substrate. After installation, when the adjustment rod 8 slides within the adjustment groove 7, the wear-resistant coating acts as the contact surface to bear the frictional load. Even with long-term high-frequency use, the coating wear rate is far lower than that of the bare steel surface, increasing the lifespan of the adjustment rod 8 by 3-5 times. This design ensures both the flexibility of adjusting the diameter of the annular clamping cavity 6 and maintains the long-term stability of adjustment accuracy through wear protection. It is particularly suitable for mass production scenarios requiring frequent adjustments to fixture dimensions, reducing maintenance frequency due to component wear and lowering production costs.

[0064] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A screw-type fixing fixture for processing sealing rings, characterized in that: It includes a base (1), a stop structure and multiple positioning holes (2) provided on the base (1); the end face of the external sealing body abuts against the base (1), the stop structure is used to stop the contact with the outer side of the external sealing body, and multiple external fasteners lock and fix the sealing body on the base (1) through multiple positioning holes (2).

2. The screw-type fixing fixture for processing sealing rings according to claim 1, characterized in that: The stop structure is a stop ring (100), which is arranged around the central axis of the base (1), and the inner ring side of the stop ring (100) surrounds and abuts against the annular outer surface of the sealing body.

3. The screw-type fixing fixture for processing sealing rings according to claim 2, characterized in that: The stop ring (100) is a circular ring or a polygonal ring.

4. The screw-type fixing fixture for processing sealing rings according to claim 1, characterized in that: The blocking structure consists of multiple blocking strips, which are arranged around the central axis of the base (1), and the inner surfaces of the multiple blocking strips respectively abut against the outer surface of the sealing body.

5. The screw-type fixing fixture for processing sealing rings according to claim 4, characterized in that: The stop strips are arc-shaped, and multiple stop strips are arranged to form a circular or polygonal ring.

6. The screw-type fixing fixture for processing sealing rings according to claim 1, characterized in that: The stop structure consists of multiple sets of wedge blocks (3). An adjustment component (4) is provided at the connection between two adjacent wedge blocks (3). A radial locking device (5) that cooperates with the adjustment component (4) is provided on the outer wall of the wedge block (3). Multiple sets of wedge blocks (3) together form a variable diameter annular clamping cavity (6). After the external sealing body is placed into the annular clamping cavity (6), the fastener passes through the positioning hole (2) to lock and fix the sealing body to the base (1).

7. The screw-type fixing fixture for processing sealing rings according to claim 6, characterized in that: The adjustment assembly (4) includes an adjustment groove (7) formed on the contact surface of adjacent wedge blocks (3) and an adjustment rod (8) passing through the adjustment groove (7). One end of the wedge block (3) is provided with the adjustment groove (7), and the other end is fixedly provided with the adjustment rod (8). The end of the wedge block (3) with the adjustment groove (7) is connected to the end of another set of wedge blocks (3) with the adjustment rod (8). The adjustment rod (8) is slidably set in the adjustment groove (7) to drive the adjacent wedge blocks (3) to move radially to change the diameter of the annular clamping cavity (6).

8. A screw-type fixing fixture for processing sealing rings according to claim 7, characterized in that: The radial locking device (5) is disposed on the outer sidewall of the wedge block (3) adjustment groove (7). The radial locking device (5) includes a locking seat (9) disposed on the outer sidewall and a locking bolt (11) passing through the locking seat (9). The end of the locking bolt (11) can abut against the adjustment assembly (4) to limit the radial movement of the wedge block (3).

9. A screw-type fixing fixture for processing sealing rings according to claim 8, characterized in that: The adjusting rod (8) is provided with multiple sets of adjusting through holes (12) evenly distributed along its length. The adjusting groove (7) sidewall of the wedge block (3) is provided with a positioning blind hole (13). The positioning blind hole (13) is connected to the locking seat (9). The end of the locking bolt (11) can pass through the positioning blind hole (13) and be inserted into the adjusting through hole (12) to achieve radial locking of the adjusting rod (8).

10. A screw-type fixing fixture for processing sealing rings according to claim 6, characterized in that: The wedge block (3) includes a first base (14) and a first boss (15) disposed on the outer periphery of the first base (14). The inner side wall of the first boss (15) is provided with an arc-shaped surface (16) that is adapted to the external sealing body. The positioning hole (2) is disposed on the bottom surface of the first base (14). The external sealing body is placed on the bottom surface of the first base (14) and locked to the positioning hole (2) by fasteners. The first boss (15) abuts against the outer side wall of the external sealing body to prevent shaking.

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