Sealing check ring deformation control device and method

Abstract

The invention discloses a sealing check ring deformation control device and method. The sealing check ring deformation control device 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 rail structure, and the pressing assembly is connected with the transmission assembly through a screw pair. The cylindrical part provided with the sealing check ring is installed in a supporting sleeve hole of the positioning assembly, and the distance from the side face T1 of a sealing groove of the cylindrical part to the end face T2 of a supporting sleeve is measured; when the distance value between the T3 surface and the T2 surface of the arc plate measurement reference surface displayed by the display and fed back by the displacement sensor is equal to the distance between the T1 surface and the T2 surface, the positioning assembly stops moving and is locked and fixed through a nut; the transmission assembly drives the pressing assembly to move through the screw pair till the two arc plates make contact with each other and then stops. Starting a heater to heat for a fixed time, keeping a set pressing time, and completing deformation control of the sealing check ring; the problem of edge cutting generated after the sealing check ring is installed is solved, and the sealing performance is improved to a great extent.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of sealing, and particularly relates to a sealing check ring deformation control device and method, which is suitable for deformation recovery of a rectangular non-cutting sealing check ring after installation. BACKGROUND

[0002] In a sealing system, a sealing check ring is usually used in cooperation with an O-ring, belongs to radial sealing, and is mostly applied to parts in cooperation with a hole shaft. In a traditional single O-ring sealing system, the O-ring may be squeezed into a gap on the low-pressure side to cause leakage when the O-ring is subjected to high pressure. However, in the actual use process, a rectangular non-cutting sealing check ring will be deformed after being installed on a part, causing assembly difficulty between the parts and frequent cutting edge phenomenon, resulting in sealing system failure and leakage. In view of this, if a control method for deformation recovery of the rectangular non-cutting sealing check ring after deformation is proposed, the leakage of the sealing system will be greatly reduced, and the sealing performance and reliability of the product will be improved. SUMMARY

[0003] The core of the present application is to provide a sealing check ring deformation control device and method, which relates to a sealing structure in cooperation with an O-ring and a sealing check ring, comprising 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 rail structure. The pressing assembly is connected with the transmission assembly through a screw pair. Firstly, the sealing check ring is installed in a cylindrical part sealing groove, and then the cylindrical part is installed into the sleeve hole of the positioning assembly, and the distance from the side surface T1 of the cylindrical part sealing groove to the end surface T2 of the sleeve is measured. The positioning assembly is pushed to move forward, and when the distance between the arc plate measurement reference surface T3 displayed by the display and the surface T2 is equal to the distance between the surface T1 and the surface T2, the movement is stopped, and the locking is fixed through the nut. Then the transmission assembly is controlled to work, and the pressing assembly is driven to move through the screw transmission connection until the two arc plates contact each other, and then the movement is stopped, at which time the sealing check ring is completely pressed. The heater is started to heat the sealing check ring for a fixed time. The pressing assembly is kept at a set temperature for a set time to complete the deformation control of the sealing check ring. Further, the sliding rail assembly mainly comprises a base, a left cover plate, a screw, 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 the large cylindrical pin and fixed on the base through the screw, so that the sliding rail assembly as a whole forms a T-shaped sliding rail. Further, the positioning assembly mainly comprises a nut, a stop block, a support block, a support sleeve and a displacement sensor; the nut and the stop block are connected through threads, the support block is installed on the T-shaped sliding track of the slide rail assembly, the nut, the stop block and the support block can move forward and backward on the T-shaped sliding track, and the nut can be fixed on the slide rail assembly after being locked; the support sleeve is installed in the support block through interference fit, and can move and adjust the positional relationship with the support block; the displacement sensor is fixedly installed on the top of the support block, and the measuring end face of the displacement sensor is flush with the end face of the support block. Further, the pressing assembly is composed of locking screws, arc plates, left and right sliding blocks; the arc plates are respectively installed in the clamping grooves of the left and right sliding blocks and are locked and fixed through the locking screws.

[0004] Further, the transmission assembly mainly comprises a screw rod, a sleeve tooth, a servo motor, a stop circular table, a small cylindrical pin and a jackscrew; the screw rod is connected with the left and right sliding blocks through a screw pair, and is connected with the servo motor through the sleeve tooth; the stop circular table is matched with the screw rod through a convex shoulder structure, is positioned and installed through the small cylindrical pin and the base, and is fixed on the cover plate through the jackscrew; Further, a heater and a temperature sensor are further included; the heater is installed in the semicircular hole of the arc plate to uniformly heat the sealing check ring; the temperature sensors are fixedly installed on the arc plate at intervals of 60° to detect the temperature around the sealing check ring under the same condition; Further, a display is further included; the display can be placed around other components for observation, and the display content includes the heating temperature value and heating time of the heater, the temperature detection value of the temperature sensor, the displacement value fed back by the displacement sensor and the pressing time of the pressing assembly; The application also provides a sealing check ring deformation control method, which is realized by using the device and comprises the following steps. Before starting work, the sealing check ring is installed in the sealing groove of the cylindrical part, the cylindrical part is installed in the support sleeve of the positioning assembly, and the distance from the side surface of the sealing groove of the cylindrical part to the end surface T2 of the support sleeve is measured by using a measuring ruler; When starting work, the arc plate is pushed forward, and when the distance value between the measuring reference surface T3 of the arc plate and the surface T2 and the distance between the surface T1 and the surface T2 are equal, the positioning assembly stops moving, and the nut is locked to be fixed on the slide rail assembly; Then, the transmission assembly is controlled to work, the screw rod is driven to rotate by the servo motor, the left and right sliding blocks of the pressing assembly are driven to move to the middle due to the opposite rotation directions of the screw structures on the two sides of the screw rod, and the two arc plates stop after contacting each other, and at this time, the sealing check ring is completely pressed; The heater is started to heat the sealing check ring for a fixed time, and the pressing assembly is kept for a fixed time under the set temperature condition, thereby completing the deformation control of the sealing check ring.

[0005] The beneficial effects of the present application are: 1. A reliable deformation control device and method are proposed for the deformation problem of rectangular no-cut sealing check ring after installation; 2. The problem of sealing system leakage caused by cutting edge after installation of rectangular no-cut sealing check ring hole shaft matching parts is solved, and the sealing performance is greatly improved.

[0006] 3. In the present application, the positioning assembly and the transmission assembly adopt the combination of linear motion and screw rod to realize the accurate press fitting of the rectangular no-cut sealing check ring. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 is a schematic diagram of the sealing check ring deformation control device of the present application; Figure 2 is Figure 1 the schematic diagram of the arc plate and screw installation structure; Figure 3 is Figure 1 the schematic diagram of the positioning assembly and the pressing assembly; Figure 4 is Figure 1 the partial structure sectional view of the arc plate; Figure 5 is Figure 1 the working principle diagram of the positioning assembly.

[0008] BRIEF DESCRIPTION OF DRAWINGS 1: base; 2: left cover plate; 3: screw; 4: large cylindrical pin; 5: locking screw; 6: arc plate; 7: left sliding block; 8: cover plate; 9: right sliding block; 10: screw; 11: sleeve tooth; 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 circular table; 17: small cylindrical pin; 18: jackscrew; 19: sealing check ring; 20: heater; 21: temperature sensor; 22: displacement sensor. DETAILED DESCRIPTION

[0009] The technical solutions of the present application will be described in detail below in combination with the drawings.

[0010] In combination Figures 1 to 5 with the description of the present embodiment, the sealing check ring deformation control device includes 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 rail structure; the pressing assembly is connected with the transmission assembly through a screw pair; The slide rail assembly is composed 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 are fixed on the upper surface of the base 1 by the screw 3 to form a T-shaped sliding track; The compression assembly is composed of a locking screw 5, an arc plate 6, a left sliding block 7 and a right sliding block 9; the arc plate 6 is respectively installed in the clamping groove of the left sliding block 7 and the right sliding block 9 and is locked and fixed by the locking screw 5; The positioning assembly 15 is composed of a nut 15-1, a stop block 15-2, a supporting block 15-3, a supporting sleeve 15-4 and a displacement sensor 22; the nut 15-1 and the stop block 15-2 are connected by threads, the supporting block 15-3 is installed in the T-shaped sliding track of the slide rail assembly, the nut 15-1, the stop block 15-2 and the supporting block 15-3 can move forward and backward in the T-shaped sliding track, and the nut 15-1 can be fixed on the slide rail assembly after being locked; the supporting sleeve 15-4 is installed in the supporting block 15-3 by interference fit; In addition, the display 13 is placed around other assemblies for convenient observation, and 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 compression time of the compression assembly; As shown in Figure 3 , the compression assembly is composed of a locking screw 5, an arc plate 6, a left sliding block 7 and a right sliding block 9; the arc plate 6 is respectively installed in the clamping groove of the left sliding block 7 and the right sliding block 9 and is locked and fixed by the locking screw 5; the sealing baffle 19 is installed in the sealing groove of the cylindrical part 15-5, and the cylindrical part 15-5 is installed in the supporting sleeve 15-4 of the positioning assembly 15; as shown in the 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 supporting block 15-3.

[0011] The transmission assembly includes a screw rod 10, a sleeve tooth 11, a servo motor 12, a stop circular table 16, a small cylindrical pin 17 and a jackscrew 18; the screw rod 10 is connected with the left sliding block 7 and the right sliding block 9 through a screw pair and is connected with the servo motor 12 through the sleeve tooth 11; the stop circular table 16 is matched with the screw rod 10 through a convex shoulder structure, is positioned and installed with the base 1 through the small cylindrical pin 17, and is fixed on the cover plate 8 by the jackscrew 18.

[0012] As shown in Figure 4 , the heater 20 is installed in the semicircular hole of the arc plate 6 to uniformly heat the sealing baffle 19; the temperature sensors 21 are uniformly fixed on the upper surface of the arc plate 6 with an interval of 60° to detect the temperature around the sealing baffle under the same condition; As shown in Figure 5 , the displacement sensor 22 is fixed on the upper surface of the supporting block 15-3, and the measurement end surface of the displacement sensor 22 is flush with the end surface of the supporting block 15-3; Before the device starts to work, firstly, the sealing baffle 19 is installed in the sealing groove of the cylindrical part 15-5, then the cylindrical part 15-5 is installed into the supporting sleeve 15-4 of the positioning assembly 15, and the distance from the side surface T1 of the sealing groove of the cylindrical part 15-5 to the end surface T2 of the supporting sleeve 15-4 is measured by a measuring scale; when the device starts to work, the pushing part 15 moves forward, when the distance value between the arc plate measuring reference surface T3 and the surface T2 and the distance between the surface T1 and the surface T2 is equal, which is fed back by the displacement sensor 22 displayed on the display 13, the positioning assembly 15 stops moving, and the locking nut 15-1 is locked to fix the 15 on the slide rail assembly; then the control transmission assembly works, the screw rod 10 is driven to rotate by the servo motor 12, the left slide block 7 and the right slide block 14 of the pressing assembly are driven to move to the middle due to the opposite rotation directions of the screw structures on the two sides of the screw rod 10, and stop until the two arc plates 6 contact each other, at this time, the sealing baffle 19 is completely pressed; the heater 20 is started to heat the sealing baffle 19 for a fixed time, and the pressing assembly keeps for a set time under the set temperature condition, so that the deformation control of the sealing baffle 19 is completed.

[0013] The beneficial effects of the present application are: 1. The present application provides a reliable deformation control device and method for the deformation problem of the rectangular no-cut sealing baffle after installation. 2. The present application solves the problem of sealing system leakage caused by the cutting edge of the rectangular no-cut sealing baffle after the installation of the hole shaft matching part, and greatly improves the sealing performance. 3. In the present application, the positioning assembly and the transmission assembly realize the accurate pressing of the rectangular no-cut sealing baffle by adopting the linear motion combined with the screw rod.

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 installed on the slide rail assembly through a T-shaped track structure; the clamping assembly and the transmission assembly are connected through a screw pair; The sealing retaining 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), and the distance from the side surface T1 of the sealing groove of the cylindrical part (15-5) to the end surface T2 of the support sleeve (15-4) is measured; the positioning assembly (15) is pushed forward, and the movement is stopped and locked when the distance value between the arc plate measurement reference surface T3 and the surface T2 and the distance between the surface T1 and the surface T2 displayed by the displacement sensor (22) fed back by the display (13) are equal; then the transmission assembly works, and the pressing assembly is driven to move through the spiral transmission connection until the sealing retaining ring (19) is completely pressed; the heater (20) is started, and after maintaining the set temperature for a set time, the deformation control of the sealing retaining ring (19) is completed.

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

3. The sealing ring deformation control device according to claim 1, characterized in that: The positioning assembly (15) comprises 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, and the support block (15-3) is installed on the T-shaped sliding track 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 track, and 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; and the displacement sensor (26) is fixedly installed on the support block (15-3).

4. The sealing ring deformation control device according to claim 1, characterized in that: The pressing 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 respectively installed in the slots of the left slider (7) and the right slider (9), and is locked and fixed by the locking screw (5).

5. The sealing ring deformation control device according to claim 4, characterized in that: The transmission assembly comprises a screw (10), a sleeve gear (11), a servo motor (12), a stopper cone (16), a small cylindrical pin (17) and a top screw (18); the screw (10) is connected to the left slider (7) and the right slider (9) through a spiral pair, and is connected to the servo motor (12) through the sleeve gear (11); the stopper cone (16) and the screw (10) are matched through a shoulder structure, and are positioned and installed with the base (1) through the small cylindrical pin (17), and are fixedly installed on the cover plate (8) using the top screw (18).

6. The sealing ring deformation control device according to claim 1, characterized in that: The device further comprises a heater (20) and a temperature sensor (21); the heater (20) is installed in a semicircular hole of the arc plate (6) to uniformly heat the sealing retaining ring (19); the temperature sensors (21) are uniformly fixedly installed on the arc plate (6) at intervals of 60 degrees to detect the ambient temperature of the sealing retaining ring (19) under the same conditions.

7. The sealing ring deformation control device according to claim 6, characterized in that: The device further comprises a display (13); the display (13) displays contents including 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.

8. A method for controlling deformation of a sealing retaining ring, characterized in that: The method is implemented using the apparatus according to any one of claims 1 to 7, and the method includes: Before starting work, install the sealing ring (19) in the sealing groove of the cylindrical part (15-5), then install the cylindrical part (15-5) into the support sleeve (15-4) of the positioning assembly (15), and use a measuring ruler to measure the distance from the side surface T1 of the sealing groove of the cylindrical part (15-5) to the end surface T2 of the support sleeve (15-4); When starting to work, push (15) forward, and when the distance value between the arc plate measurement 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, the positioning assembly (15) stops moving, and the locking nut (15-1) is tightened to fix (15) on the slide rail assembly; Then, the transmission assembly is controlled to work, and the screw (10) is driven to rotate by the servo motor (12). Since the spiral structures on both sides of the screw (10) rotate in opposite directions, the left slider (7) and the right slider (14) of the pressing assembly are driven to move toward the middle until the two arc plates (6) contact each other and stop. At this time, the sealing ring (19) is completely compressed. The heater (20) is started to heat the sealing retaining ring (19) for a fixed period of time, and after the pressing assembly is maintained under the set temperature conditions for a set time, the deformation control of the sealing retaining ring (19) is completed.

Images