Device and method for detecting sealing performance of rubber sealing ring

Abstract

The invention relates to the technical field of sealing performance detection, in particular to a rubber sealing ring sealing performance detection device which comprises a workbench, a fixed disc and a fixed cylinder which are symmetrically arranged at the top end of the workbench, a detection mechanism arranged on the fixed disc, a rack fixedly installed on the fixed disc and a detection cylinder arranged on one side of the rack. The detection cylinder is of a hollow structure, a detection carrying disc is arranged at the position, close to the top end, in a cavity of the detection cylinder, a piston plate is arranged in the middle of the cavity of the detection cylinder, a digital pressure gauge is arranged on a cylinder body of the detection cylinder and used for reading the pressure value in the detection cylinder, and a to-be-detected sealing ring is automatically taken through an air bag layer in the material taking mechanism. After material taking, the sealing ring is placed in the detection port of the detection mechanism, piston motion is carried out in the detection cylinder of the detection mechanism, whether the sealing ring is qualified or not is judged by observing the numerical value of the digital pressure gauge, and the detection mode does not need any additional gas and does not have the problems of resource waste and potential safety hazards.

Description

Technical Field

[0001] The invention relates to the technical field of sealing performance detection, and in particular to a device and method for detecting the sealing performance of a rubber sealing ring. Background Art

[0002] Rubber sealing rings are widely used in products that have certain requirements for air tightness, such as pipes, valves, hydraulic cylinders, shaft seals, pressure gauges and gas tanks. The sealing performance of rubber sealing rings directly affects the use effect of these products. Therefore, the sealing performance of rubber sealing rings needs to be tested after production to ensure that they perform well when used with other products.

[0003] When used in the valve field, rubber sealing rings are mainly used to improve the sealing performance of the valve and the pipeline after connection. Especially for some valves installed on pipelines with larger diameters, the sealing performance of the rubber sealing ring has a more obvious impact on the use effect of the valve. Therefore, the sealing performance of the rubber sealing ring needs to be tested after production to ensure that the valve used with it can perform well.

[0004] In the prior art, a rubber sealing ring sealing performance detection device is proposed in a patent application with publication number CN117906940B. The application can detect the sealing performance of the rubber sealing ring by setting an argon gas pressurization device, and can determine the leakage point of the rubber sealing ring by setting an ionized water mist device. When the air tightness of the rubber sealing ring fails for multiple consecutive times, the mold for manufacturing the rubber sealing ring can be checked and repaired by checking the leakage point.

[0005] The detection method using argon and ionized water mist in the detection process of the above-mentioned patent application has the following defects: first, argon is an inert gas that is slightly soluble in water. Even if a recovery device is set up in conjunction with the use of an ionized water mist device, a certain amount of argon will still be consumed, resulting in a waste of resources. In addition, once argon leaks and is inhaled by a person, there is a risk of cardiac arrest, and the sealing safety requirements for the detection and recovery equipment are relatively high; secondly, after each detection using ionized water mist is completed, it is necessary to wait for the detection box to dry and return to its original state before the next detection can be carried out. The detection time is extended, which in turn affects the detection efficiency and is not suitable for sealing detection of large quantities of sealing rings after molding. Summary of the invention

[0006] Technical Solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rubber sealing ring sealing performance testing device, comprising a workbench, a fixed plate and a fixed cylinder are symmetrically arranged at the top of the workbench, a testing mechanism is arranged on the fixed plate, comprising a frame fixedly mounted on the fixed plate, a testing cylinder is arranged on one side of the frame, the testing cylinder is a hollow structure, a testing carrier plate is arranged in the cavity near the top position, a piston plate is arranged in the middle position of the cavity of the testing cylinder, and a digital pressure gauge is arranged on the body of the testing cylinder for reading the pressure value in the testing cylinder;

[0008] The fixed plate is also provided with two placement racks, and the side surfaces of the placement racks are provided with three support rods in an equidistant array, and the three support rods are sleeved with a plurality of sealing rings;

[0009] A toothed disc is rotatably arranged on the fixed cylinder, and a material picking mechanism is arranged on the toothed disc, including three material picking barrels arranged in an equidistant array on the outer surface of the toothed disc. An air bag layer is arranged at one end of the material picking barrel for supporting the sealing ring. A pressure ring is also movably sleeved on the outer side of the material picking barrel for applying pressure to the sealing ring during the detection process.

[0010] Preferably, a collection box is placed in the middle of the workbench, and the collection box is located directly below the detection mechanism and the material taking mechanism, and is used to collect the sealing rings that pass the detection.

[0011] Preferably, a second cylinder is installed in the hollow part of the frame, and an output shaft of the second cylinder is fixedly connected to a piston rod by bolts, and the top end of the piston rod movably penetrates the detection cylinder and is connected to the bottom end of the piston plate.

[0012] Preferably, the outer surfaces of the piston plate and the piston rod are both provided with rubber pads, so that the two are respectively interference fit with the inner wall of the detection cylinder to ensure sealing.

[0013] Preferably, a gap is provided between the detection carrier and the inner wall of the detection tube, and a sealing ring completely covers the top of the gap for sealing detection.

[0014] Preferably, the two placement racks are at equal distances from the frame, a transverse plate is fixedly installed on the fixed plate between the two placement racks, and a driving motor is installed on the transverse plate.

[0015] Preferably, the bottom end of the horizontal plate is movably connected to a conveyor belt via two rotating shafts, the output shaft of the driving motor movably passes through the bottom of the horizontal plate and is connected to one of the rotating shafts, and two micro cylinders are provided on the outer surface of the conveyor belt for pushing the sealing ring outward.

[0016] Preferably, three cylinders one are installed on the rear surface of the toothed disc, and the output shafts of the three cylinders one are respectively connected to the three material taking barrels. A servo motor is also installed inside the fixed barrel, and the output shaft of the servo motor is movably extended to the outside of the fixed barrel and is connected to one, which is meshed with the toothed disc. A blowing and suction machine connected to the airbag layer is installed inside the material taking barrel for controlling the contraction and expansion of the airbag layer. The outer axial surface of the airbag layer is provided with three depressions for clamping three support rods. A cylinder three is also installed inside the material taking barrel.

[0017] Preferably, the axial surface of the material taking barrel is provided with three grooves at equal distances, each groove is movably connected to a connecting rod, one end of the three connecting rods is fixedly connected to the pressure ring, and the other end is fixedly connected to the output shaft of the cylinder three, and the outer surface of the material taking barrel is also provided with three protrusions, and the inner side wall of the pressure ring is provided with a groove that is slidably engaged with the outside of the protrusion.

[0018] A method for testing the sealing performance of a rubber sealing ring, using a rubber sealing ring sealing performance testing device as claimed in any one of claims 1 to 9, comprising the following steps:

[0019] S1: Before taking the material, several sealing rings are placed on the support rods on both sides for standby use, and the servo motor drives the material taking mechanism to rotate intermittently to take the material;

[0020] S2: When taking materials, start the air cylinder 1 connected to the taking barrel, so that one end of the taking barrel moves toward the sealing ring, and the airbag layer extends to the inside of the sealing ring, and then start the blowing and sucking machine inside the taking barrel to control the expansion of the airbag layer. At this time, the airbag layer supports the sealing ring and moves to the detection port of the detection barrel of the detection mechanism;

[0021] S3: During the test, the sealing ring placed at the test port is pressurized for -s through the pressure ring. At the same time, the piston moves inside the cylinder 2 of the test mechanism, and the pass or fail of the sealing ring is judged by observing the value of the digital pressure gauge.

[0022] Beneficial Effects

[0023] Compared with the prior art, the present invention provides a rubber sealing ring sealing performance detection device and method, which has the following beneficial effects:

[0024] The airbag layer in the material taking mechanism automatically takes the sealing ring to be tested, and then the material taking mechanism is rotated and moved to the detection port of the detection cylinder of the detection mechanism and the sealing ring is placed at the detection port of the detection mechanism. The sealing ring is pressurized by the pressure ring for 3-5 seconds. At the same time, the piston moves inside the detection cylinder of the detection mechanism. The qualification of the sealing ring is judged by observing the value of the digital pressure gauge. This detection method does not require any external gas, and there is no problem of wasting resources and safety hazards.

[0025] By controlling the three material taking barrels to rotate alternately clockwise and counterclockwise, the several spare sealing rings on both sides can be taken out alternately in a cycle. This not only does not affect the re-sparing of the sealing rings, but also enables uninterrupted detection of the sealing rings, thereby improving detection efficiency.

[0026] When the sealing ring passes the inspection, the pressure ring returns to its original position. At this time, the pressure inside the detection tube is relatively high after the piston movement. The sealing ring is automatically removed by the outward impact force from the gap between the inner wall of the detection tube and the detection carrier, and finally falls into the collection box for automatic collection, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0028] Figure 1 The overall structure diagram of the detection mechanism and the material taking mechanism arranged on the workbench of the present invention;

[0029] Figure 2 For the present invention Figure 1 A top view of

[0030] Figure 3 It is a structural schematic diagram of the material taking mechanism of the present invention;

[0031] Figure 4 This is a schematic diagram of the structure of the material barrel of the present invention;

[0032] Figure 5 This is a schematic diagram of the internal structure of the fixed cylinder of the present invention;

[0033] Figure 6 For the present invention Figure 1 A front view of

[0034] Figure 7 For the present invention Figure 1 Another perspective stereogram;

[0035] Figure 8 It is a structural diagram of the detection mechanism arranged on the fixed plate of the present invention;

[0036] Fig. 9 It is a structural diagram of a placement rack arranged on a fixed plate of the present invention;

[0037] Fig.10 It is a cross-sectional view of the internal structure of the detection mechanism of the present invention;

[0038] Fig.11 It is a top view of the detection tube of the detection mechanism of the present invention.

[0039] Description of reference numerals:

[0040] 1. Workbench; 11. Collection box; 2. Fixed plate; 21. Placement rack; 22. Support rod; 23. Cross plate; 231. Drive motor; 232. Conveyor belt; 233. Micro cylinder; 3. Fixed cylinder; 31. Toothed plate; 311. Cylinder one; 32. Material taking cylinder; 321. Groove; 322. Bump; 33. Air bag layer; 34. Pressure ring; 4. Rack; 41. Detection cylinder; 411. Detection carrier; 412. Piston plate; 413. Digital pressure gauge; 42. Cylinder two; 5. Sealing ring. DETAILED DESCRIPTION

[0041] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0042] Embodiment 1, as Figure 1-11 As shown, in order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rubber sealing ring sealing performance detection device, comprising a workbench 1, a fixed disk 2 and a fixed cylinder 3 are symmetrically arranged on the top of the workbench 1, a detection mechanism is arranged on the fixed disk 2, including a frame 4 fixedly mounted on the fixed disk 2, a detection cylinder 41 is arranged on one side of the frame 4, the detection cylinder 41 is a hollow structure, and a detection carrier 411 is arranged in the cavity near the top position, a piston plate 412 is arranged in the middle position of the cavity of the detection cylinder 41, and a digital pressure gauge 413 is arranged on the cylinder body of the detection cylinder 41, Used to read the pressure value in the detection cylinder 41, the hollow part of the frame 4 is installed with a cylinder 2 42, the output shaft of the cylinder 2 42 is fixedly connected with a piston rod by bolts, the top of the piston rod movably penetrates the detection cylinder 41 and is connected to the bottom of the piston plate 412, the outer surfaces of the piston plate 412 and the piston rod are provided with rubber pads, so that the two are respectively interference fit with the inner wall of the detection cylinder 41 to ensure the sealing, and the piston plate 412 is controlled by the cylinder 2 42 to reciprocate, so that the piston plate 412 performs piston movement inside the detection cylinder 41, which is used to pressurize the detection cylinder 41;

[0043] Furthermore, a collecting box 11 is placed in the middle of the workbench 1. The collecting box 11 is located directly below the detection mechanism and the material taking mechanism, and is used to collect the sealing rings 5 ​​that have passed the detection. Figure 6 As shown, there is a gap between the detection mechanism and the material taking mechanism, so when the detection mechanism performs a sealing test on the sealing ring 5, the sealing ring 5 can fall from the gap between the two mechanisms into the collection box 11, which is convenient for centralized collection;

[0044] Further, such as Fig.11As shown, a gap is provided around the detection disc 411 and the inner wall of the detection cylinder 41, and the sealing ring 5 completely covers the top of the gap for its sealing detection. When the detection is carried out, a sealing ring 5 is tightly fitted with the inner wall of the detection cylinder 41 and the outer surface of the detection disc 411. If the sealing of the sealing ring 5 is qualified, the gap will not leak, that is, the internal pressure of the detection cylinder 41 increases after the piston moves, the value of the digital pressure gauge 413 increases and is within the set pressure range, and the sealing ring 5 is determined to be qualified in sealing. On the contrary, when the sealing ring 5 is detected, the value of the digital pressure gauge 413 is lower than the set pressure range, and the sealing line of the sealing ring 5 is determined to be unqualified.

[0045] Embodiment 2, as Figure 6-9 As shown, two placement racks 21 are also provided on the fixed disk 2, and three support rods 22 are arranged in an equidistant array on the side surface of the placement rack 21, and a plurality of sealing rings 5 ​​are sleeved on the three support rods 22. The distances between the two placement racks 21 and the frame 4 are equal, and a plurality of sealing rings 5 ​​to be tested are placed on the support rods 22 for standby use, wherein the diameter of the circle formed by the three support rods 22 is less than or equal to the inner diameter of the sealing ring 5, so as to facilitate the separation of the sealing ring 5. The plurality of sealing rings 5 ​​on both sides are separately cycled and taken by the taking mechanism, so as to complete the uninterrupted detection of the sealing ring 5 and improve the production detection efficiency;

[0046] Further, such as Figure 2 and Figure 8 As shown, a transverse plate 23 is fixedly installed on the fixed disk 2 between the two placement racks 21, and a driving motor 231 is installed on the transverse plate 23. The bottom end of the transverse plate 23 is movably connected to a conveyor belt 232 through two rotating shafts. The output shaft of the driving motor 231 movably passes through the bottom of the transverse plate 23 and is connected to one of the rotating shafts. Two micro cylinders 233 are arranged on the outer surface of the conveyor belt 232 for pushing the sealing ring 5 outward. The driving motor 231 drives the two rotating shafts to rotate and further drives the conveyor belt 232 to rotate. When the micro cylinder 233 is located close to the placement rack 21, the output shaft is in an extended state, and one end of the output shaft extends to the center of the sealing ring 5. As the conveyor belt 232 rotates, the micro cylinder 233 drives the sealing ring 5 on the support rod 22 to move slowly outward, so that the material taking mechanism can take the sealing ring 5 at the outermost end.

[0047] Embodiment three, as Figure 3-5As shown, a toothed disc 31 is rotatably provided on the fixed cylinder 3, and a material taking mechanism is provided on the toothed disc 31, including three material taking barrels 32 arranged in an equidistant array on the outer surface of the toothed disc 31, and an air bag layer 33 is provided at one end of the material taking barrel 32 for supporting the sealing ring 5, and a pressure ring 34 is movably sleeved on the outer side of the material taking barrel 32 for applying pressure to the sealing ring 5 during the detection process, and the width of the pressure ring 34 is greater than the width of the sealing ring 5;

[0048] Furthermore, three cylinders 311 are installed on the rear surface of the toothed disc 31, and the output shafts of the three cylinders 311 are respectively connected to the three material taking barrels 32. A servo motor is also installed inside the fixed barrel 3, and the output shaft of the servo motor extends to the outside of the fixed barrel 3 and is connected to a 35, which is meshed with the toothed disc 31. The servo motor drives 35 to rotate, and 35 drives the toothed disc 31 to rotate, and the toothed disc 31 drives the three material taking barrels 32 installed on its outer surface to rotate, wherein the toothed disc 31 rotates intermittently at a rotation angle of 120° A blowing and sucking machine connected to the airbag layer 33 is installed inside the material taking barrel 32, which is used to control the contraction and expansion of the airbag layer 33. When the airbag layer 33 expands, it can fit tightly with the inner wall of the sealing ring 5, which is convenient for supporting the sealing ring 5. When the airbag layer 33 shrinks, the sealing ring 5 can automatically fall off from the airbag layer 33. The outer axial surface of the airbag layer 33 is provided with three depressions for clamping three support rods 22. When the airbag layer 33 expands to take materials, the three depressions on its outer axial surface will not hinder the three support rods 22, thereby improving the portability of taking materials;

[0049] Furthermore, a cylinder three is installed inside the material taking barrel 32, and three grooves 321 are equidistantly provided on the axial surface of the material taking barrel 32, and a connecting rod is movably connected inside each groove 321, one end of the three connecting rods is fixedly connected to the pressure ring 34, and the other end is fixedly connected to the output shaft of the cylinder three, and three protrusions 322 are also provided on the outer surface of the material taking barrel 32, and the inner side wall of the pressure ring 34 is provided with a card groove that is slidably engaged with the outside of the protrusion 322, which is used to limit the pressure ring 34 to prevent the pressure ring 34 from deflecting when moving. When the airbag layer 33 supports the sealing ring 5, the cylinder one 311 connected to the material taking barrel 32 is started, and the cylinder one 311 drives the material taking barrel 32 to the detection of the detection barrel 41 The opening position is moved until the sealing ring 5 is completely fitted at the detection opening of the detection cylinder 41, and then the cylinder three located inside the material taking cylinder 32 is started. The cylinder three drives the pressure ring 34 to move through the connecting rod until the pressure ring 34 firmly presses the sealing ring 5 to the detection opening of the detection cylinder 41. Finally, the air bag layer 33 is controlled to shrink by the blowing and suction machine to make the sealing ring 5 separate from the air bag layer 33. The pressure ring 34 applies pressure to the sealing ring 5 for 3-5s to detect the sealing performance of the sealing ring 5. After the detection is completed, the pressure ring 34 returns to its original position. At this time, the pressure inside the detection cylinder 41 is relatively large after the piston movement, and the sealing ring 5 is automatically separated from the gap between the inner wall of the detection cylinder 41 and the detection carrier 411 due to the outward impact force.

[0050] When the above embodiment is working, firstly, several sealing rings 5 ​​are placed on the support rods 22 on both sides for standby use. Before detection, firstly, the servo motor drives 35 to rotate clockwise, and 35 drives the toothed disc 31 to rotate intermittently clockwise at a rotation angle of 120°. The toothed disc 31 drives the three material taking barrels 32 installed on its outer surface to rotate intermittently and cyclically. When the three material taking barrels 32 rotate clockwise, several sealing rings 5 ​​on one side of the support rod 22 are taken. When the sealing rings 5 ​​on the support rod 22 on that side are taken, the rotation direction of the servo motor is adjusted to drive 35 to rotate counterclockwise. At this time, the three material taking barrels 32 rotate counterclockwise to take the several sealing rings 5 ​​on the other side of the support rod 22. The uninterrupted process of taking and detecting the sealing rings 5 ​​can be ensured, thereby improving the detection efficiency.

[0051] When taking materials, when one of the taking barrels 32 rotates to the position corresponding to the sealing ring 5 on the supporting rod 22 on one side, the cylinder 1 311 connected to the taking barrel 32 is first started to move one end of the taking barrel 32 toward the sealing ring 5 and extend the airbag layer 33 to the inside of the sealing ring 5, and then the blowing and sucking machine inside the taking barrel 32 is started to control the expansion of the airbag layer 33. At this time, the airbag layer 33 supports the sealing ring 5, wherein the length of the airbag layer 33 is set to support only one sealing ring 5 at a time, and the taking barrel 32 is reset by the cylinder 1 311 control, and then the taking barrel 32 rotates 120° and moves to the detection port of the detection barrel 41 of the detection mechanism;

[0052] During the inspection, the air cylinder 3 located inside the material taking barrel 32 is started, and the air cylinder 3 drives the pressure ring 34 to move through the connecting rod until the pressure ring 34 firmly presses the sealing ring 5 to the inspection port of the inspection barrel 41. Finally, the air bag layer 33 is controlled to contract by the blowing and suction machine to separate the sealing ring 5 from the air bag layer 33. The pressure ring 34 applies pressure to the sealing ring 5 for 3-5 seconds. At the same time, the air cylinder 2 42 drives the piston plate 412 to perform piston movement inside the inspection barrel 41 through the piston rod. When the sealing performance of the sealing ring 5 is qualified, the air cylinder 2 42 drives the piston plate 412 to perform piston movement inside the inspection barrel 41 ... There will be no leakage in the gap of the detection port, that is, the internal pressure of the detection cylinder 41 increases after the piston moves, the value of the digital pressure gauge 413 increases and is within the set pressure range, and the sealing ring 5 is determined to be sealed. After the test is completed, the pressure ring 34 returns to its original position. Since the pressure inside the detection cylinder 41 is relatively high after the piston moves, the sealing ring 5 is automatically dropped by the outward impact force from the gap between the inner wall of the detection cylinder 41 and the detection carrier 411, and finally falls into the collection box 11 for collection;

[0053] When the sealing ring 5 is tested in the above steps, the value of the digital pressure gauge 413 is lower than the set pressure range, and the sealing ring 5 is determined to have an unqualified sealing line. The digital pressure gauge 413 can be connected to an alarm for use. When the reading of the digital pressure gauge 413 is lower than the set pressure range, the alarm will sound to remind the operator to remove the unqualified product. When the sealing ring 5 is qualified, the alarm will not sound, which has the effect of automatically monitoring whether the product is qualified or not.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rubber sealing ring sealing performance testing device, comprising a workbench (1), characterized in that: A fixed plate (2) and a fixed cylinder (3) are symmetrically arranged at the top of the workbench (1); a detection mechanism is arranged on the fixed plate (2), comprising a frame (4) fixedly mounted on the fixed plate (2); a detection cylinder (41) is arranged on one side of the frame (4); the detection cylinder (41) is a hollow structure and a detection carrier plate (411) is arranged in the cavity near the top; a piston plate (412) is arranged in the middle of the cavity of the detection cylinder (41); and a digital pressure gauge (413) is arranged on the body of the detection cylinder (41) for reading the pressure value in the detection cylinder (41); The fixed plate (2) is also provided with two placement racks (21), and the side surfaces of the placement racks (21) are provided with three support rods (22) in an equidistant array, and the three support rods (22) are sleeved with a plurality of sealing rings (5); A toothed disc (31) is rotatably arranged on the fixed cylinder (3), and a material taking mechanism is arranged on the toothed disc (31), including three material taking barrels (32) arranged in an equidistant array on the outer surface of the toothed disc (31), an air bag layer (33) is arranged at one end of the material taking barrel (32) for supporting the sealing ring (5), and a pressure ring (34) is movably sleeved on the outer side of the material taking barrel (32) for applying pressure to the sealing ring (5) during the detection process.

2. A rubber sealing ring sealing performance detection device according to claim 1, characterized in that: A collection box (11) is placed in the middle of the workbench (1). The collection box (11) is located directly below the detection mechanism and the material taking mechanism and is used to collect the sealing rings (5) that have passed the detection.

3. A rubber sealing ring sealing performance detection device according to claim 1, characterized in that: The hollow part of the frame (4) is provided with a second cylinder (42), the output shaft of which is fixedly connected to a piston rod via bolts, the top end of which movably penetrates the detection cylinder (41) and is connected to the bottom end of the piston plate (412).

4. A rubber sealing ring sealing performance detection device according to claim 3, characterized in that: The outer surfaces of the piston plate (412) and the piston rod are both provided with rubber pads, so that the two are respectively interference-fitted with the inner wall of the detection cylinder (41) to ensure sealing.

5. The rubber sealing ring sealing performance detection device according to claim 1, characterized in that: A gap is provided around the detection carrier (411) and the inner wall of the detection tube (41), and a sealing ring (5) completely covers the top of the gap for sealing detection.

6. A rubber sealing ring sealing performance detection device according to claim 1, characterized in that: The two placement racks (21) are equidistant from the frame (4), and a transverse plate (23) is fixedly mounted on the fixed plate (2) between the two placement racks (21), and a driving motor (231) is mounted on the transverse plate (23).

7. A rubber sealing ring sealing performance detection device according to claim 6, characterized in that: The bottom end of the transverse plate (23) is movably connected to a conveyor belt (232) via two rotating shafts. The output shaft of the driving motor (231) movably passes through the bottom of the transverse plate (23) and is connected to one of the rotating shafts. Two micro cylinders (233) are arranged on the outer surface of the conveyor belt (232) for pushing the sealing ring (5) outward.

8. The rubber sealing ring sealing performance detection device according to claim 1, characterized in that: Three cylinders (311) are installed on the rear surface of the toothed disc (31), and the output shafts of the three cylinders (311) are respectively connected to the three material taking barrels (32). A servo motor is also installed inside the fixed barrel (3), and the output shaft of the servo motor is movably extended to the outside of the fixed barrel (3) and is connected to a (35), (35) is meshed with the toothed disc (31), and a blowing and suction machine connected to the airbag layer (33) is installed inside the material taking barrel (32) for controlling the contraction and expansion of the airbag layer (33). The outer axial surface of the airbag layer (33) is provided with three recesses for clamping three support rods (22), and a cylinder (3) is also installed inside the material taking barrel (32).

9. A rubber sealing ring sealing performance detection device according to claim 8, characterized in that: The axial surface of the material taking barrel (32) is provided with three grooves (321) at equal intervals, each groove (321) is movably connected to a connecting rod, one end of the three connecting rods is fixedly connected to the pressure ring (34), and the other end is fixedly connected to the output shaft of the cylinder three, the outer surface of the material taking barrel (32) is also provided with three protrusions (322), and the inner side wall of the pressure ring (34) is provided with a slot that is slidably engaged with the outside of the protrusion (322).

10. A method for testing the sealing performance of a rubber sealing ring, characterized in that: Using a rubber sealing ring sealing performance detection device as described in any one of claims 1 to 9, the steps include: S1: Before taking the material, a plurality of sealing rings (5) are placed on the support rods (22) on both sides for standby use, and the servo motor drives the taking mechanism to rotate intermittently in a cyclic manner to take the material; S2: When taking materials, start the air cylinder (311) connected to the material taking barrel (32), so that one end of the material taking barrel (32) moves toward the sealing ring (5), and the airbag layer (33) extends into the sealing ring (5), and then start the blowing and sucking machine inside the material taking barrel (32) to control the expansion of the airbag layer (33), at which time the airbag layer (33) supports the sealing ring (5) and moves to the detection port of the detection barrel (41) of the detection mechanism; S3: During the test, the sealing ring (5) placed at the test port is pressurized by the pressure ring (34) for 3-5 seconds. At the same time, the piston movement is performed inside the test cylinder (41) of the test mechanism. The pass or fail of the sealing ring (5) is judged by observing the value of the digital pressure gauge (413).

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