A sealing check ring deformation control device and method

Abstract

The application discloses a sealing check ring deformation control device and method, which comprises a sliding rail assembly, a positioning assembly, a transmission assembly and a pressing assembly; the positioning assembly and the pressing assembly are installed on the sliding rail assembly through a T-shaped track structure, and the pressing assembly is connected with the transmission assembly through a screw pair; a cylindrical part provided with a sealing check ring is installed in a positioning assembly support hole, and the distance from a sealing groove side surface T1 of the cylindrical part to a support end surface T2 is measured; the positioning assembly is pushed to move forward, and when the distance between an arc plate measurement reference surface T3 displayed by a displacement sensor and the surface T2 and the distance between the surface T1 and the surface T2 are equal, the movement is stopped and fixed through a nut; the transmission assembly drives the pressing assembly to move to the position where the two arc plates contact each other through the screw pair and then stops; a heater is started to heat for a fixed time, the pressing time is kept, and the deformation control of the sealing check ring is completed; the cutting edge problem caused after the sealing check ring is installed is solved, and the sealing performance is greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of sealing technology, specifically a device and method for controlling the deformation of a sealing ring, applicable to the deformation recovery of a rectangular, uncut sealing ring after installation in radial sealing. Background Technology

[0002] In sealing systems, retaining rings are typically used in conjunction with O-rings, forming radial seals, and are mostly applied in parts where the bore and shaft mate. In traditional single-O-ring sealing systems, when the O-ring is subjected to high pressure, it may be squeezed into the gap on the low-pressure side, leading to leakage. Installing a retaining ring between the O-ring on the low-pressure side and the metal part can limit the extrusion of the O-ring between the metal parts, ensuring sealing performance and system reliability. However, in actual use, rectangular uncut retaining rings deform after installation, causing assembly difficulties and frequent edge trimming, leading to sealing system failure and leakage. Therefore, proposing a method to control the deformation recovery of rectangular uncut retaining rings after installation would greatly reduce leakage in the sealing system and improve product sealing performance and reliability. Summary of the Invention

[0003] The core of this invention is to provide a sealing ring deformation control device and method, which relates to a sealing structure for use with an O-ring and a sealing ring, including a slide rail assembly, a positioning assembly, a transmission assembly, and a clamping assembly; the positioning assembly and the clamping assembly are mounted on the slide rail assembly via a T-shaped track structure; the clamping assembly and the transmission assembly are connected by a screw pair; First, install the sealing ring into the sealing groove of the cylindrical part. Then, install the cylindrical part into the support hole of the positioning assembly and measure the distance from the side T1 of the sealing groove of the cylindrical part to the end face T2 of the support. Push the positioning assembly forward. When the distance between the arc plate measuring reference surface T3 and the T2 surface, as fed back by the displacement sensor on the display, is equal to the distance between the T1 surface and the T2 surface, stop moving and lock it in place with a nut. Then, control the transmission assembly to work, driving the pressing assembly to move through the screw drive connection until the two arc plates contact each other and stop. At this point, the sealing ring is fully pressed. Start the heater to heat the sealing ring for a fixed period of time. After the pressing assembly maintains the set temperature for a set time, the deformation control of the sealing ring is completed. Furthermore, the slide rail assembly mainly includes a base, a left cover plate, screws, a large cylindrical pin, a cover plate, and a right cover plate; the left cover plate, the cover plate, and the right cover plate are all positioned by large cylindrical pins and fixed to the base by screws, so that the slide rail assembly as a whole forms a T-shaped sliding track; Furthermore, the positioning component mainly includes a nut, a stop block, a support block, a sleeve, and a displacement sensor. The nut and the stop block are connected by threads, and the support block is installed on the T-shaped sliding rail of the slide rail assembly. The nut, stop block, and support block can move back and forth on the T-shaped sliding rail, and the nut can be fixed on the slide rail assembly after being locked. The sleeve is installed in the support block by interference fit, and can move relative to each other to adjust its positional relationship with the support block. The displacement sensor is fixedly installed on the support block, and the measuring end face of the displacement sensor is flush with the end face of the support block. Furthermore, the clamping assembly consists of a locking screw, an arc plate, a left slider, and a right slider; the arc plate is installed in the slots of the left slider and the right slider respectively, and is locked and fixed by the locking screw.

[0004] Furthermore, the transmission assembly mainly includes a screw, a gear sleeve, a servo motor, a stop frustum, a small cylindrical pin, and a set screw; the screw is connected to the left and right sliders via a screw pair and to the servo motor via the gear sleeve; the stop frustum and the screw are engaged by a shoulder structure, and are positioned and installed on the base via the small cylindrical pin, and are fixed to the cover plate by a set screw; Furthermore, it also includes a heater and a temperature sensor; the heater is installed in the semi-circular hole of the arc plate to uniformly heat the sealing ring; the temperature sensors are uniformly fixed on the arc plate at 60° intervals to detect the temperature around the sealing ring under the same conditions. Furthermore, it also includes a display; the display can be placed around the other components for easy observation, and the displayed content includes the heater heating temperature value and heating time, the temperature detection value of the temperature sensor, the displacement value fed back by the displacement sensor, and the clamping time of the clamping component; The present invention also provides a method for controlling the deformation of a sealing ring, the method being implemented using the aforementioned device, the method comprising: Before starting work, install the sealing ring into the sealing groove of the cylindrical part, then install the cylindrical part into the support of the positioning assembly, and use a measuring ruler to measure the distance from the side of the sealing groove of the cylindrical part to the end face T2 of the support. When the machine starts working, it is pushed forward. When the distance between the arc plate measurement reference surface T3 and T2 surfaces, as fed back by the displacement sensor on the display, is equal to the distance between the T1 surface and T2 surface, the positioning component stops moving and the locking nut is tightened to fix it on the slide rail assembly. Then the transmission component is controlled to work, and the screw is driven to rotate by the servo motor. Since the spiral structure on both sides of the screw rotates in opposite directions, it will drive the left and right sliders of the pressing component to move towards the middle until the two arc plates come into contact with each other and stop. At this time, the sealing ring is completely pressed. The heater is started to heat the sealing ring for a fixed period of time. After the pressing assembly is held at the set temperature for a set time, the deformation control of the sealing ring is completed.

[0005] The beneficial effects of this invention are: 1. To address the deformation problem caused by the installation of rectangular uncut sealing rings, a reliable deformation control device and method are proposed. 2. It solves the problem of leakage in the sealing system caused by the cut edge after the installation of the hole-shaft mating parts using rectangular uncut sealing rings, and greatly improves the sealing performance.

[0006] 3. In this invention, the positioning component and the transmission component adopt a motion mode that combines linear motion and a screw, thereby achieving precise pressing of the rectangular non-cut sealing ring. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of a sealing ring deformation control device according to the present invention; Figure 2 yes Figure 1 A schematic diagram of the arc plate and screw installation structure; Figure 3 yes Figure 1 Schematic diagram of the positioning component and clamping component; Figure 4 yes Figure 1 A partial structural cross-sectional view of the aforementioned arc plate; Figure 5 yes Figure 1 The working principle diagram of the positioning component.

[0008] Icon descriptions included 1: Base; 2: Left cover plate; 3: Screw; 4: Large cylindrical pin; 5: Locking screw; 6: Arc plate; 7: Left slider; 8: Cover plate; 9: Right slider; 10: Screw; 11: Gear sleeve; 12: Servo motor; 13: Display; 14: Right cover plate; 15: Positioning assembly; 15-1: Nut; 15-2: Stop block; 15-3: Support block; 15-4: Support sleeve; 15-5: Cylindrical part; 16: Stop frustum; 17: Small cylindrical pin; 18: Set screw; 19: Sealing ring; 20: Heater; 21: Temperature sensor; 22: Displacement sensor. Detailed Implementation

[0009] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

[0010] Combination Figures 1 to 5 This embodiment describes a sealing ring deformation control device comprising a slide rail assembly, a positioning assembly, a transmission assembly, and a clamping assembly; the positioning assembly and the clamping assembly are mounted on the slide rail assembly via a T-shaped track structure; the clamping assembly and the transmission assembly are connected via a screw pair. The slide rail assembly consists of a base 1, a left cover plate 2, a screw 3, a large cylindrical pin 4, a cover plate 8, and a right cover plate 14. The left cover plate 2, the cover plate 8, and the right cover plate 14 are all positioned by the large cylindrical pin 4 and fixed to the base 1 by the screw 3 to form a T-shaped slide rail. The clamping assembly consists of a locking screw 5, an arc plate 6, a left slider 7, and a right slider 9; the arc plate 6 is installed in the slots of the left slider 7 and the right slider 9 respectively, and is locked and fixed by the locking screw 5. The positioning assembly 15 consists of a nut 15-1, a stop block 15-2, a support block 15-3, a support sleeve 15-4, and a displacement sensor 22. The nut 15-1 and the stop block 15-2 are connected by threads. The support block 15-3 is installed on the T-shaped sliding rail of the slide rail assembly. The nut 15-1, the stop block 15-2, and the support block 15-3 can move back and forth on the T-shaped sliding rail. At the same time, the nut 15-1 can be fixed on the slide rail assembly after being locked. The support sleeve 15-4 is installed in the support block 15-3 by interference fit. In addition, the display 13 is placed around other components for easy observation. The display content includes the heating temperature value and heating time of the heater 20, the temperature detection value of the temperature sensor 21, the displacement value fed back by the displacement sensor 22, and the clamping time of the clamping component. like Figure 3 As shown, the clamping assembly consists of a locking screw 5, an arc plate 6, a left slider 7, and a right slider 9; the arc plate 6 is installed in the slots of the left slider 7 and the right slider 9 respectively, and is locked and fixed by the locking screw 5; the sealing ring 19 is installed in the sealing groove of the cylindrical part 15-5, and the cylindrical part 15-5 is installed in the support sleeve 15-4 of the positioning assembly 15; as can be seen from detailed view B, the heater 20 and the temperature sensor 21 are installed on the arc plate 6, and the displacement sensor 22 is installed on the support block 15-3.

[0011] The transmission assembly includes a screw 10, a gear sleeve 11, a servo motor 12, a stop frustum 16, a small cylindrical pin 17, and a set screw 18. The screw 10 is connected to the left slider 7 and the right slider 9 via a screw pair, and is connected to the servo motor 12 via the gear sleeve 11. The stop frustum 16 and the screw 10 are engaged by a shoulder structure, and are positioned and installed on the base 1 via the small cylindrical pin 17. It is fixedly installed on the cover plate 8 using the set screw 18.

[0012] like Figure 4 As shown, the heater 20 is installed in the semi-circular hole of the arc plate 6 to uniformly heat the sealing ring 19; the temperature sensors 21 are uniformly fixed on the arc plate 6 at 60° intervals to detect the temperature around the sealing ring under the same conditions. like Figure 5 As shown, the displacement sensor 22 is fixedly installed on the support block 15-3, and the measuring end face of the displacement sensor 22 is flush with the end face of the support block 15-3. Before the device starts working, first install the sealing ring 19 into the sealing groove of the cylindrical part 15-5, then install the cylindrical part 15-5 into the support 15-4 of the positioning assembly 15, and use a measuring ruler to measure the distance from the side T1 of the sealing groove of the cylindrical part 15-5 to the end face T2 of the support 15-4; When the device starts working, it pushes 15 forward. When the distance between the arc plate measurement reference surfaces T3 and T2, as fed back by the displacement sensor 22 on the display 13, is equal to the distance between the T1 and T2 surfaces, the positioning component 15 stops moving and the locking nut 15-1 is tightened to fix 15 on the slide rail assembly. Then, the transmission component is controlled to work, and the servo motor 12 drives the screw 10 to rotate. Since the spiral structures on both sides of the screw 10 rotate in opposite directions, they will drive the left slider 7 and right slider 14 of the pressing component to move towards the middle until the two arc plates 6 come into contact with each other and stop. At this time, the sealing ring 19 is completely pressed. The heater 20 is started to heat the sealing ring 19 for a fixed period of time. After the pressing component maintains the set temperature for a set time, the deformation control of the sealing ring 19 is completed.

[0013] The beneficial effects of this invention are: 1. This invention addresses the deformation problem caused by the installation of rectangular uncut sealing rings by proposing a reliable deformation control device and method; 2. This invention solves the problem of leakage in the sealing system caused by the cut edge after the installation of the hole-shaft mating parts using rectangular uncut sealing rings, and greatly improves the sealing performance. 3. In this invention, the positioning component and the transmission component adopt a motion mode that combines linear motion and a screw, thereby achieving precise pressing of the rectangular non-cut sealing ring.

Claims

1. A sealing ring deformation control device, characterized in that, It includes a slide rail assembly, a positioning assembly, a transmission assembly, and a clamping assembly; the positioning assembly and the clamping assembly are mounted on the slide rail assembly via a T-shaped rail structure; the clamping assembly and the transmission assembly are connected by a screw pair; Install the sealing ring (19) in the sealing groove of the cylindrical part (15-5), install the cylindrical part (15-5) into the support (15-4) of the positioning assembly (15), and measure the distance from the side T1 of the sealing groove of the cylindrical part (15-5) to the end face T2 of the support (15-4); push the positioning assembly (15) forward, and stop moving and lock it when the distance between the arc plate measuring reference surface T3 and the T2 surface fed back by the displacement sensor (22) displayed on the display (13) is equal to the distance between the T1 surface and the T2 surface; then the transmission assembly works, and drives the pressing assembly to move through the screw transmission connection until the sealing ring (19) is completely pressed; start the heater (20), and after maintaining the set temperature for a set time, complete the deformation control of the sealing ring (19); The positioning component (15) includes a nut (15-1), a stop block (15-2), a support block (15-3), a sleeve (15-4), and a displacement sensor (22). The nut (15-1) and the stop block (15-2) are connected by threads. The support block (15-3) is installed on the T-shaped sliding rail of the slide rail assembly. The nut (15-1), the stop block (15-2), and the support block (15-3) can move back and forth on the T-shaped sliding rail. At the same time, after the nut (15-1) is locked, the positioning component (15) can be fixed on the slide rail assembly. The sleeve (15-4) is installed in the support block (15-3) by interference fit. The displacement sensor (22) is fixedly installed on the support block (15-3). The clamping assembly consists of a locking screw (5), an arc plate (6), a left slider (7), and a right slider (9); the arc plate (6) is installed in the slots of the left slider (7) and the right slider (9) respectively, and is locked and fixed by the locking screw (5); The transmission assembly includes a screw (10), a gear sleeve (11), a servo motor (12), a stop frustum (16), a small cylindrical pin (17), and a set screw (18). The screw (10) is connected to the left slider (7) and the right slider (9) through a screw pair, and is connected to the servo motor (12) through the gear sleeve (11). The stop frustum (16) and the screw (10) are engaged by a shoulder structure, and are positioned and installed on the base (1) through the small cylindrical pin (17). The set screw (18) is used to fix the screw on the cover plate (8).

2. The sealing ring deformation control device according to claim 1, characterized in that, The slide rail assembly includes a base (1), a left cover plate (2), screws (3), a large cylindrical pin (4), a cover plate (8), and a right cover plate (14). The left cover plate (2), the cover plate (8), and the right cover plate (14) are all positioned by the large cylindrical pin (4) and fixed to the base (1) by the screws (3) to form a T-shaped slide rail.

3. The sealing ring deformation control device according to claim 1, characterized in that, The device also includes a heater (20) and a temperature sensor (21); the heater (20) is installed in the semi-circular hole of the arc plate (6) to uniformly heat the sealing ring (19); the temperature sensors (21) are uniformly fixed on the arc plate (6) at 60° intervals to detect the temperature around the sealing ring (19) under the same conditions.

4. The sealing ring deformation control device according to claim 3, characterized in that, The device also includes a display (13); the display (13) displays the heating temperature value and heating time of the heater (20), the temperature detection value of the temperature sensor (21), the displacement value fed back by the displacement sensor (22), and the pressing time of the pressing assembly.

5. A method for controlling the deformation of a sealing ring, characterized in that, The method is implemented using the apparatus described in any one of claims 1-4, and the method includes: Before starting work, install the sealing ring (19) into the sealing groove of the cylindrical part (15-5), then install the cylindrical part (15-5) into the support (15-4) of the positioning assembly (15), and use a measuring ruler to measure the distance from the side T1 of the sealing groove of the cylindrical part (15-5) to the end face T2 of the support (15-4); When the work starts, push the positioning component (15) forward. When the distance between the arc plate measurement reference surface T3 and T2 surfaces and the distance between the T1 surface and T2 surface are equal as fed back by the displacement sensor (22) on the display (13), the positioning component (15) stops moving and the locking nut (15-1) is tightened to fix the positioning component (15) on the slide rail assembly. Then control the transmission component to work, drive the screw (10) to rotate through the servo motor (12). Since the spiral structure on both sides of the screw (10) rotates in opposite directions, it will drive the left slider (7) and right slider (14) of the pressing component to move towards the middle until the two arc plates (6) come into contact with each other and stop. At this time, the sealing ring (19) is completely pressed. Start the heater (20) to heat the sealing ring (19) for a fixed period of time. After the pressing assembly is held at the set temperature for a set time, the deformation control of the sealing ring (19) is completed.

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