Device and method for testing performance of rubber sealing ring

Abstract

The invention relates to the technical field of sealing ring performance testing, and discloses a rubber sealing ring performance testing device and method.The rubber sealing ring performance testing device comprises a side plate fixed to the top of a bottom plate, a rotatable mounting shell is mounted on the outer wall of the side plate, and a plurality of slidable supporting rods are mounted on the outer wall of the mounting shell; each supporting rod can be adjusted in a centripetal or centrifugal moving mode, and a groove allowing a rubber sealing ring to be embedded therein is formed in the end of each supporting rod. According to the device, the rubber sealing ring is intermittently stretched and contracted through the supporting rod, a photosensitive solution can be immersed into a small crack, the solution on the outer side of the crack is wiped through cleaning cotton, and then the detection part can perform image acquisition on the rubber sealing ring at the position more clearly; and the crack detection can find problems in an early stage, and leakage, pollution and equipment damage caused by sealing failure are prevented, so that the economic loss and the environmental influence are reduced.

Description

Technical Field

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

[0002] Rubber sealing rings play a vital role in real life and are widely used in automobiles, aviation, medical devices, industrial equipment and other fields. By providing excellent sealing performance, they effectively prevent the entry or leakage of liquids, gases, dust, etc., ensuring the normal operation and safety of equipment and systems. It not only improves the efficiency and durability of the equipment, but also reduces maintenance costs and failure rates to a certain extent. Therefore, the performance test of the sealing ring is very important and is directly related to its reliability and safety in practical applications.

[0003] For example, Chinese patent publication number CN113702027A relates to a device for testing the compressive performance of rubber sealing rings of petroleum pump valves, comprising a workbench, a supporting unit and a testing unit, wherein the supporting unit is arranged on the right side of the upper end of the workbench, and the testing unit is installed on the left side of the upper end of the workbench; the above-mentioned testing device can solve the following problems: most of the general rubber sealing ring testing equipment is an integral pressing test method, and it is impossible to detect when the local compressive performance of the rubber sealing ring is insufficient, and the steps of such equipment are cumbersome when adjusting the pressing force, and when the rubber sealing ring is tested, the stress points on the rubber sealing ring are prone to dispersion, thereby affecting the test accuracy; the invention can circumferentially support and fix the rubber sealing ring to prevent the rubber sealing ring from folding and rolling; the invention can perform extrusion tests on points at different positions of the rubber sealing ring, thereby ensuring the test accuracy.

[0004] However, in actual applications, small cracks may appear in rubber sealing rings during use. These cracks often do not affect their sealing performance in the early stage. However, these tiny cracks will gradually expand, causing invisible hidden dangers, and then with the accumulation of stress concentration over a long period of time, it may cause further damage to the material. Therefore, it is particularly important to detect this potential problem in time. Summary of the invention

[0005] The object of the present invention is to provide a rubber sealing ring performance testing device and a testing method to solve at least one technical problem existing in the above-mentioned prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rubber sealing ring performance testing device, comprising a side plate fixed on the top of a bottom plate, a rotatable mounting shell installed on the outer wall of the side plate, a plurality of slidable support rods installed on the outer wall of the mounting shell, and each of the support rods can be adjusted for centripetal or centrifugal movement, and each of the support rods has a groove at the end for the rubber sealing ring to be embedded, a liquid storage box that can be adjusted for vertical sliding is installed on the outer wall of the side plate, a photosensitive solution is contained in the liquid storage box, a movable plate that can be adjusted for horizontal sliding is installed on the outer wall of the side plate, and a cleaning cotton is installed on the outer wall of the movable plate;

[0007] It also includes a detection part which is installed on the outer wall of the side plate and can collect images of the rubber sealing ring, and the detection part has a lighting device which can illuminate the photosensitive solution and change its color.

[0008] Preferably, a rotating ring is rotatably mounted on the outer wall of the side plate, and a first connecting rod is rotatably mounted between the outer wall of the rotating ring and the outer wall of the movable plate, and a second connecting rod is rotatably mounted between the outer wall of the rotating ring and the outer wall of the liquid storage box;

[0009] The inner wall of the rotating ring is installed with a plurality of first elastic fins, the outer wall of the mounting shell is installed with a plurality of second elastic fins that contact and abut against the first elastic fins, the inner wall of the rotating ring is also fixedly connected with a fixed block, and the outer wall of the side plate is fixedly installed with a blocking block that can contact and abut against the fixed block.

[0010] Preferably, a plurality of fixed sleeves are fixedly installed through the outer wall of the installation shell, each of the support rods is slidably installed on the inner wall of the corresponding fixed sleeve, and a tension spring is installed between the outer wall of each support rod and the outer wall of the corresponding fixed sleeve;

[0011] A rotating shaft is rotatably installed on the outer wall of the side plate, and a protrusion that enables the support rod to perform centrifugal movement is installed on the outer wall of the rotating shaft. A straight groove is penetrated through the outer wall of the side plate, and an electric slider is slidably installed on the inner wall of the straight groove. An inner gear ring is provided on the inner wall of the mounting shell, and a rotatable moving gear is installed on the outer wall of the electric slider, and the moving gear can mesh with the driven gear or the inner gear ring. A limit block is fixedly installed on the outer wall of the electric slider, and tooth grooves that can mesh with the inner gear ring and the driven gear are respectively provided on the outer walls on both sides of the limit block.

[0012] Preferably, the protrusion includes a rotating frame fixedly mounted on the outer wall of the rotating shaft, a sliding block is slidably mounted on the inner wall of the rotating frame, a screw rod that can be rotatably adjusted is mounted in the rotating frame, the screw rod passes through the sliding block and is threadedly connected to the penetration portion of the sliding block, a protrusion block is fixedly mounted on the outer wall of the sliding block, the protrusion block and the support rod are in the same plane, and the contact portion is set to be an arc surface.

[0013] Preferably, the protrusion is a cam fixedly mounted on the outer wall of the rotating shaft, and the raised portion of the cam can be embedded between two adjacent support rods.

[0014] Preferably, two symmetrical sliding blocks are provided, and the outer wall of the screw rod is provided with two sections of threads rotating in opposite directions, and the outer walls of the two sliding blocks are fixed with protruding blocks.

[0015] Preferably, the detection unit comprises a support plate fixed to the outer wall of the side plate, and a high-definition camera capable of capturing images of the top of the rubber sealing ring is fixedly mounted on the bottom of the support plate.

[0016] Preferably, the side of the cleaning cotton close to the rubber sealing ring is configured as an arc surface and is detachable.

[0017] Preferably, when the fixing block contacts the blocking block, the lower portion of the rubber sealing ring is completely immersed in the liquid in the liquid storage tank.

[0018] A performance testing method for a rubber sealing ring comprises the following steps:

[0019] Step 1: retract all support rods and place the rubber sealing ring that has passed the preliminary performance test in the groove of the support rod;

[0020] Step 2: Rotate the mounting shell to drive the rubber sealing ring to rotate, and move the liquid tank and the moving plate toward the rubber sealing ring at the same time;

[0021] Step 3: When the liquid tank completely soaks the rubber seal, the moving plate and the liquid tank stop moving, and the rubber seal is intermittently stretched by the extension and retraction of the support rod, so that the rubber seal is stretched when it rotates to the solution in the liquid tank, so that the solution in the liquid tank can better penetrate into the small gap;

[0022] Step 4: When the rubber seal ring rotates to contact with the cleaning cotton, it shrinks and the liquid on the surface of the rubber seal ring is wiped by the cleaning cotton so that the solution in the gap is retained;

[0023] Step 5: When the rubber sealing ring rotates to the top, it is stretched again to magnify the tiny cracks, and the detection unit can capture images of the stretched part of the rubber sealing ring more clearly.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention uses a support rod to intermittently stretch and shrink the rubber sealing ring, so that the photosensitive solution can be immersed in the tiny cracks, and the solution on the outside of the cracks is wiped by cleaning cotton, so that the detection unit can more clearly capture the image of the rubber sealing ring at this point, so as to judge whether there are tiny cracks in the rubber sealing ring at this point. Crack detection can discover problems at an early stage, prevent leakage, pollution and equipment damage caused by sealing failure, thereby reducing economic losses and environmental impacts.

[0026] 2. The present invention soaks the rubber sealing ring with a photosensitive solution contained in a liquid storage box, so that the photosensitive solution (such as fluorescent penetrant) can penetrate into the cracks on the surface of the rubber sealing ring, and irradiates the corresponding light source (such as ultraviolet rays) through the detection part, and then collects high-definition images here, so that the staff can more accurately judge whether there are fine cracks here. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front view of the present invention;

[0028] Figure 2 A perspective view of the present invention;

[0029] Figure 3 It is a front cross-sectional view of the present invention;

[0030] Figure 4 It is a rear view of the present invention;

[0031] Figure 5 is a cross-sectional schematic diagram of the mobile gear in the present invention;

[0032] Figure 6 It is a schematic diagram of the rubber sealing ring in the present invention in an unstretched state;

[0033] Figure 7 It is a schematic diagram of the rubber sealing ring in the present invention after being stretched;

[0034] Figure 8 FIG. 1 is a schematic diagram of a second embodiment of the present invention.

[0035] In the figure: 1. bottom plate; 2. side plate; 3. mounting shell; 4. fixing sleeve; 5. support rod; 6. tension spring; 7. rubber sealing ring; 8. support plate; 9. high-definition camera; 10. liquid storage tank; 11. moving plate; 12. cleaning cotton; 13. electric slider; 14. rotating frame; 15. moving gear; 16. driven gear; 17. inner gear ring; 18. limit block; 19. rotating ring; 20. first elastic fin; 21. second elastic fin; 22. sliding block; 23. screw; 24. first connecting rod; 25. second connecting rod; 26. fixed block; 27. protruding block; 28. rotating shaft; 29. ​​cam; 30. blocking block. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figures 1 to 8 The present invention provides a technical solution: a rubber sealing ring performance testing device, comprising a side plate 2 fixed on the top of a bottom plate 1, characterized in that: a rotatable mounting shell 3 is mounted on the outer wall of the side plate 2, a plurality of slidable support rods 5 are mounted on the outer wall of the mounting shell 3, and each support rod 5 can be adjusted for centripetal or centrifugal movement, and each end of the support rod 5 is provided with a groove for the rubber sealing ring 7 to be embedded, a liquid storage box 10 that can be adjusted for vertical sliding is mounted on the outer wall of the side plate 2, and a photosensitive solution is contained in the liquid storage box 10, a movable plate 11 that can be adjusted for horizontal sliding is mounted on the outer wall of the side plate 2, and a cleaning cotton 12 is mounted on the outer wall of the movable plate 11;

[0038] It also includes a detection unit installed on the outer wall of the side plate 2 and capable of collecting images of the rubber sealing ring 7, and the detection unit has a lighting device that can illuminate the photosensitive solution and change its color.

[0039] See also Figure 1 as well as Figure 2, generally, the performance test device of the rubber sealing ring 7 can only test its existing performance. After passing the preliminary performance test device, all the support rods 5 are retracted inward, and the tested rubber sealing ring 7 is set in the groove on the support rod 5. The mounting shell 3 is driven to rotate by the external structure. When the mounting shell 3 rotates, the support rod 5 and the rubber sealing ring 7 are driven to rotate synchronously, and in this process, the liquid storage box 10 and the movable plate 11 are moved in the direction close to the mounting shell 3. When the lower end of the rubber sealing ring 7 is completely immersed in the liquid in the liquid storage box 10, the liquid storage box 10 and the movable plate 11 stop moving, and the rubber sealing ring 7 is intermittently extended and retracted by the extension and retraction of the support rod 5. When the rubber sealing ring 7 rotates to the bottom end and is immersed in the liquid in the liquid storage box 10, it is stretched outward. When there are tiny cracks on the surface of the rubber sealing ring 7 here, the stretching can make the position here The cracks at the position are enlarged, so that the photosensitive solution in the liquid storage box 10 penetrates from the cracks. When the rubber seal ring 7 is rotated to be separated from the solution in the liquid storage box 10, the rubber seal ring 7 here will retract inwards and rotate to fit with the cleaning cotton 12. Since the rubber seal ring 7 here is in an inward contraction state at this time, the small cracks are in a closed state, so the cleaning cotton 12 will only wipe the photosensitive solution on the surface of the rubber seal ring 7 here, and the solution inside the cracks will still remain. When the rubber seal ring 7 here is rotated to the top, it is stretched again by the support rod 5, and the small cracks are enlarged, so that the detection unit can more clearly capture the image of the rubber seal ring 7 here, so as to increase the accuracy of subsequent judgments. By early detection and treatment of small cracks in the rubber seal ring 7, these cracks can be prevented from expanding during use, resulting in sealing failure and equipment failure. This can significantly improve the reliability and stability of the equipment.

[0040] Therefore, by intermittently stretching and contracting the rubber sealing ring 7 through the support rod 5, the photosensitive solution can be immersed in the tiny cracks, and the solution on the outside of the cracks can be wiped off by the cleaning cotton 12, so that the detection unit can more clearly capture the image of the rubber sealing ring 7 at this point, so as to judge whether there are tiny cracks in the rubber sealing ring 7 at this point. Crack detection can discover problems at an early stage and prevent leakage, pollution and equipment damage caused by sealing failure, thereby reducing economic losses and environmental impacts.

[0041] Among them, it is worth noting that the rubber sealing ring 7 is immersed in the photosensitive solution contained in the liquid storage box 10, so that the photosensitive solution (such as fluorescent penetrant) can penetrate into the cracks on the surface of the rubber sealing ring 7, and the corresponding light source (such as ultraviolet rays) is irradiated by the detection part, and then high-definition images are collected here, so that the staff can more accurately judge whether there are fine cracks here.

[0042] Furthermore, a rotating ring 19 is rotatably mounted on the outer wall of the side plate 2, and a first connecting rod 24 is rotatably mounted between the outer wall of the rotating ring 19 and the outer wall of the movable plate 11, and a second connecting rod 25 is rotatably mounted between the outer wall of the rotating ring 19 and the outer wall of the liquid storage box 10;

[0043] A plurality of first elastic fins 20 are installed on the inner wall of the rotating ring 19, and a plurality of second elastic fins 21 that contact and abut against the first elastic fins 20 are installed on the outer wall of the mounting shell 3. A fixing block 26 is also fixedly connected to the inner wall of the rotating ring 19, and a blocking block 30 that can contact and abut against the fixing block 26 is fixedly installed on the outer wall of the side plate 2.

[0044] Furthermore, when the fixing block 26 contacts the blocking block 30 , the lower portion of the rubber sealing ring 7 is completely immersed in the liquid in the liquid storage box 10 .

[0045] See also Figure 3 When the rubber seal ring 7 is sleeved on the end of the support rod 5, the mounting shell 3 is driven to rotate through the external structure, thereby driving the second elastic fin 21 to rotate, and then the rotating ring 19 is rotated through the cooperation of the second elastic fin 21 and the first elastic fin 20. When the rotating ring 19 rotates, the first connecting rod 24 and the second connecting rod 25 can respectively move the movable plate 11 and the liquid storage box 10 toward the mounting shell 3. When the fixed block 26 contacts the blocking block 30, the protruding block 27 will limit the rotating ring 19 to stop the rotating ring 19. Since the first elastic fin 20 and the second elastic fin 21 are both elastic The setting, that is, the mounting shell 3 will continue to drive the support rod 5 and the rubber sealing ring 7 to rotate, and the rotating ring 19 will remain stationary here. At this time, the lower end of the rubber sealing ring 7 is just immersed in the solution in the liquid storage box 10, so that the surface of the rubber sealing ring 7 can be immersed in the solution in the liquid storage box 10 in turn, and the rubber sealing ring 7 that enters the solution part in the liquid storage box 10 will be stretched by the support rod 5, and will shrink when it is rotated to be separated from the solution, and the surface solution will be wiped by the cleaning cotton 12, and then stretched again and its position will be imaged by the detection unit to determine whether there are tiny cracks here.

[0046] Furthermore, a plurality of fixed sleeves 4 are fixedly installed through the outer wall of the mounting shell 3, each support rod 5 is slidably installed on the inner wall of the corresponding fixed sleeve 4, and a tension spring 6 is installed between the outer wall of each support rod 5 and the outer wall of the corresponding fixed sleeve 4;

[0047] A rotating shaft 28 is rotatably installed on the outer wall of the side plate 2, and a protrusion that enables the support rod 5 to perform centrifugal movement is installed on the outer wall of the rotating shaft 28. A straight groove is penetrated through the outer wall of the side plate 2, and an electric slider 13 is slidably installed on the inner wall of the straight groove. An inner gear ring 17 is provided on the inner wall of the mounting shell 3, and a rotatable moving gear 15 is installed on the outer wall of the electric slider 13. The moving gear 15 can mesh with the driven gear 16 or the inner gear ring 17. A limit block 18 is fixedly installed on the outer wall of the electric slider 13, and the outer walls on both sides of the limit block 18 are respectively provided with tooth grooves that can mesh with the inner gear ring 17 and the driven gear 16.

[0048] See also Figure 1 In the initial state, under the action of the tension spring 6, all the support rods 5 will be retracted inward to the shortest state, so that the rubber sealing ring 7 can be sleeved in the groove at the end of the support rod 5.

[0049] See also Figure 5 When the rubber sealing ring 7 needs to be stretched, the electric slider 13 is driven to move, thereby driving the moving gear 15 to engage with the rotating shaft 28, and the motor fixed to the outer wall of the electric slider 13 drives the moving gear 15 to rotate, thereby driving the rotating shaft 28, so that the protrusion rotates, and the protrusion rotates to the position where the rubber sealing ring 7 is to be stretched, and then the support rod 5 is pushed outward by the protrusion, so that the support rod 5 drives the rubber sealing ring 7 to stretch, and then the electric slider 13 is driven to drive the moving gear 15 to move, so that the moving gear 15 and the driven gear 16 are disengaged from the meshing with the inner gear ring 17, thereby rotating the mounting shell 3, and at this time, the limit block 18 will mesh with the driven gear 16 to limit the driven gear 16 , preventing the driven gear 16 from rotating at this time, the rotation of the mounting shell 3 drives the fixed sleeve 4 and the support rod 5 to rotate, thereby driving the rubber sealing ring 7 to rotate, and in this process, under the action of the protrusion, different support rods 5 will be extended and retracted outward, so that the rubber sealing ring 7 at the corresponding position will be intermittently stretched, that is, when immersed in the solution in the liquid storage box 10 as mentioned above, it will be stretched, so that the tiny cracks on its surface are enlarged to facilitate the solution to penetrate into the cracks, and when it is rotated to be separated from the solution, the support rod 5 shrinks inward, so that the cleaning cotton 12 wipes the surface of the rubber sealing ring 7, and then stretches again, so that the detection unit can accurately capture the image here, so as to determine whether there are tiny cracks here, and prevent problems before they happen.

[0050] Embodiment 1 provides a protrusion for causing the support rod 5 to perform centrifugal motion;

[0051] Furthermore, the protrusion includes a rotating frame 14 fixedly mounted on the outer wall of the rotating shaft 28, a sliding block 22 is slidably mounted on the inner wall of the rotating frame 14, a screw 23 that can be rotatably adjusted is installed in the rotating frame 14, the screw 23 passes through the sliding block 22 and is threadedly connected to the penetration portion of the sliding block 22, a protrusion 27 is fixedly mounted on the outer wall of the sliding block 22, the protrusion 27 and the support rod 5 are in the same plane, and the contact portion is set to be an arc surface.

[0052] See also Figure 3 as well as Figure 6 When the rubber seal ring 7 needs to be monitored, it can be seen from the above that by driving the electric slider 13 to move, the moving gear 15 drives the driven gear 16 to rotate, so that the rotating shaft 28 drives the rotating frame 14 to rotate, and then the protruding block 27 rotates to the corresponding position (such as Figure 6 ), the motor-driven screw rod 23 of the outer wall of the rotating frame 14 rotates, so that the sliding block 22 moves in the direction close to the support rod 5, and then drives the protruding block 27 to move in the direction close to the support rod 5. When the protruding block 27 contacts the support rod 5, it will drive part of the support rod 5 to do centrifugal movement, thereby driving the rubber sealing ring 7 here to stretch outward, and then the electric slider 13 is driven to move so that the moving gear 15 is engaged with the inner gear ring 17, so that the mounting shell 3 drives the rubber sealing ring 7 to rotate, that is, whenever the rubber sealing ring 7 rotates to this point, it will always stretch outward under the action of the protruding block 27 and the support rod 5, and the detection unit collects images of this place, so as to more accurately judge whether there are tiny cracks here.

[0053] It is worth mentioning that when the moving gear 15 is engaged with the driven gear 16, the rotating frame 14 can be driven to drive the protruding block 27 to rotate, and then drive the extended support rod 5 to rotate, so that different positions are stretched, and by controlling the rotation angle of the motor on the outer wall of the rotating frame 14, the distance that the support rod 5 extends outward, that is, the stretching degree of the rubber sealing ring 7 can be controlled, so as to simulate the use of different forces and angles by the staff when the rubber sealing ring 7 is installed on the mechanical equipment, and then through the above-mentioned detection steps, it is easy to judge whether the rubber sealing ring 7 will cause tiny cracks when the staff installs the rubber sealing ring 7 on the mechanical equipment, causing hidden dangers in the subsequent use process.

[0054] Embodiment 2 provides a second protrusion that causes the support rod 5 to perform centrifugal motion;

[0055] Furthermore, the protruding portion is a cam 29 fixedly mounted on the outer wall of the rotating shaft 28 , and the raised portion of the cam 29 can be embedded between two adjacent support rods 5 .

[0056] See also Figure 8, which is basically the same as the first embodiment, except that when the cam 29 is rotated by the rotation of the rotating shaft 28, the cam 29 will cause one of the support rods 5 to move outward to simulate the scene when the staff is installing the rubber sealing ring 7 on the mechanical equipment, especially the thinner rubber sealing ring 7, while the first embodiment simulates the installation of a relatively thick rubber sealing ring 7 (for example, when a tire is installed on a wheel hub).

[0057] Furthermore, two symmetrical sliding blocks 22 are provided, and the outer wall of the screw rod 23 is provided with two sections of threads rotating in opposite directions, and the outer walls of the two sliding blocks 22 are both fixed with protruding blocks 27 .

[0058] See also Figure 3 as well as Figure 6 The protruding blocks 27 are set to be two symmetrical ones, which can better simulate the scene when the staff is setting the set, and during the detection process, the two protruding blocks 27 are rotated to the Figure 6 The screw 23 is driven by the external motor of the rotating frame 14 to rotate and drive the two protruding blocks 27 to move in the opposite direction and drive the corresponding support rods 5 to move, so that the upper and lower ends of the rubber sealing ring 7 are stretched, as shown. Figure 7 As shown, the rubber sealing ring 7 entering the liquid storage box 10 and located at the lower end of the detection part is stretched, so that the photosensitive solution can penetrate into the small cracks and make the subsequent image acquisition more accurate, thereby increasing the accuracy of the staff's judgment.

[0059] Among them, by setting two protruding blocks 27, the protruding part of the rubber sealing ring 7 can be fixed at the upper and lower ends to prevent bulging at other positions, especially the contact part between the rubber sealing ring 7 and the cleaning cotton 12, to prevent the cleaning cotton 12 from cleaning the solution in the crack of the rubber sealing ring 7 when cleaning it.

[0060] Furthermore, the detection unit includes a support plate 8 fixed to the outer wall of the side plate 2 , and a high-definition camera 9 capable of capturing images of the top of the rubber sealing ring 7 is fixedly installed at the bottom of the support plate 8 .

[0061] See also Figure 1 When the rubber sealing ring 7 rotates to the bottom of the support plate 8, the lighting device at the bottom of the support plate 8 will illuminate this place and shoot this place through the high-definition camera 9. By observing whether there is residual photosensitive solution, the staff can accurately judge whether there are small cracks here, so as to avoid damage to the equipment in subsequent use.

[0062] Furthermore, a side of the cleaning cotton 12 close to the rubber sealing ring 7 is configured as an arc surface and is detachable.

[0063] See also Figure 1The side of the cleaning cotton 12 close to the rubber sealing ring 7 is set as an arc surface. When the rubber sealing ring 7 rotates to this point, the cleaning cotton 12 will wrap the surface of the rubber sealing ring 7 and clean its surface more finely, so as to facilitate more accurate image acquisition of the rubber sealing ring 7 later. The cleaning cotton 12 is set to be detachable. In the process of the cleaning cotton 12 constantly wiping the surface of the rubber sealing ring 7, it will gradually become wet, thereby reducing its water absorption capacity. After the predetermined working time, it will be replaced by the staff to ensure the stability of the entire process and prevent it from affecting the subsequent image acquisition.

[0064] A performance testing method for a rubber sealing ring comprises the following steps:

[0065] Step 1: retract all support rods 5 and sleeve the rubber sealing ring 7 that has passed the preliminary performance test into the groove of the support rod 5;

[0066] Step 2: Rotate the mounting shell 3 to drive the rubber seal ring 7 to rotate, and move the liquid storage box 10 and the movable plate 11 toward the direction close to the rubber seal ring 7 at the same time;

[0067] Step 3: After the liquid tank 10 completely soaks the rubber seal 7, the moving plate 11 and the liquid tank 10 stop moving, and the rubber seal 7 is intermittently stretched by the extension and retraction of the support rod 5, so that the rubber seal 7 is stretched when it rotates to the solution in the liquid tank 10, so that the solution in the liquid tank 10 can better penetrate into it from the small gap;

[0068] Step 4: When the rubber sealing ring 7 rotates to contact with the cleaning cotton 12, it shrinks, and the liquid on the surface of the rubber sealing ring 7 is wiped by the cleaning cotton 12, so that the solution in the gap is retained;

[0069] Step 5: When the rubber sealing ring 7 rotates to the top, it is stretched again to enlarge the tiny cracks, and the detection unit can capture images of the stretched part of the rubber sealing ring 7 more clearly.

[0070] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0071] 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 performance testing device, comprising a side plate (2) fixed on the top of a bottom plate (1), characterized in that: The outer wall of the side plate (2) is provided with a rotatable mounting shell (3), the outer wall of the mounting shell (3) is provided with a plurality of slidable support rods (5), and each of the support rods (5) can be adjusted to move centripetally or centrifugally, and each end of the support rod (5) is provided with a groove for inserting a rubber sealing ring (7), the outer wall of the side plate (2) is provided with a liquid storage box (10) that can slide vertically and adjust, and the liquid storage box (10) contains a photosensitive solution, the outer wall of the side plate (2) is provided with a movable plate (11) that can slide horizontally and adjust, and the outer wall of the movable plate (11) is provided with a cleaning cotton (12); It also comprises a detection unit installed on the outer wall of the side plate (2) and capable of collecting images of the rubber sealing ring (7), and the detection unit has a lighting device capable of irradiating the photosensitive solution and causing it to change color.

2. The rubber sealing ring performance testing device according to claim 1, characterized in that: A rotating ring (19) is rotatably mounted on the outer wall of the side plate (2), and a first connecting rod (24) is rotatably mounted between the outer wall of the rotating ring (19) and the outer wall of the movable plate (11), and a second connecting rod (25) is rotatably mounted between the outer wall of the rotating ring (19) and the outer wall of the liquid storage box (10); The inner wall of the rotating ring (19) is provided with a plurality of first elastic fins (20), the outer wall of the mounting shell (3) is provided with a plurality of second elastic fins (21) which are in contact with and abut against the first elastic fins (20), the inner wall of the rotating ring (19) is also fixedly connected with a fixing block (26), and the outer wall of the side plate (2) is fixedly provided with a blocking block (30) which is capable of contacting and abutting against the fixing block (26).

3. The rubber sealing ring performance testing device according to claim 2 is characterized in that: A plurality of fixed sleeves (4) are fixedly installed through the outer wall of the installation shell (3); each of the support rods (5) is slidably installed on the inner wall of the corresponding fixed sleeve (4); and a tension spring (6) is installed between the outer wall of each support rod (5) and the outer wall of the corresponding fixed sleeve (4); The outer wall of the side plate (2) is rotatably mounted with a rotating shaft (28), and the outer wall of the rotating shaft (28) is mounted with a protrusion capable of causing the support rod (5) to perform centrifugal motion. The outer wall of the side plate (2) is provided with a straight groove extending therethrough, and an electric slider (13) is slidably mounted on the inner wall of the straight groove. The inner wall of the mounting shell (3) is provided with an inner gear ring (17), and the outer wall of the electric slider (13) is provided with a rotatable moving gear (15), and the moving gear (15) can mesh with a driven gear (16) or an inner gear ring (17). A limit block (18) is fixedly mounted on the outer wall of the electric slider (13), and tooth grooves capable of meshing with the inner gear ring (17) and the driven gear (16) are respectively provided on the outer walls of both sides of the limit block (18).

4. The rubber sealing ring performance testing device according to claim 3 is characterized in that: The protruding portion comprises a rotating frame (14) fixedly mounted on the outer wall of the rotating shaft (28); a sliding block (22) is slidably mounted on the inner wall of the rotating frame (14); a screw rod (23) capable of rotational adjustment is mounted in the rotating frame (14); the screw rod (23) passes through the sliding block (22) and is threadedly connected to the through-hole of the sliding block (22); a protruding block (27) is fixedly mounted on the outer wall of the sliding block (22); the protruding block (27) and the support rod (5) are in the same plane, and the contact portion is set to be an arc surface.

5. The rubber sealing ring performance testing device according to claim 3 is characterized in that: The protruding portion is a cam (29) fixedly mounted on the outer wall of the rotating shaft (28), and the raised portion of the cam (29) can be embedded between two adjacent supporting rods (5).

6. The rubber sealing ring performance testing device according to claim 4, characterized in that: The sliding blocks (22) are provided with two symmetrical ones, and the outer wall of the screw rod (23) is provided with two sections of threads rotating in opposite directions, and the outer walls of the two sliding blocks (22) are both fixed with protruding blocks (27).

7. The rubber sealing ring performance testing device according to any one of claims 1 to 6, characterized in that: The detection unit comprises a support plate (8) fixed to the outer wall of the side plate (2), and a high-definition camera (9) capable of capturing images of the top of the rubber sealing ring (7) is fixedly mounted on the bottom of the support plate (8).

8. The rubber sealing ring performance testing device according to any one of claims 1 to 6, characterized in that: The side of the cleaning cotton (12) close to the rubber sealing ring (7) is configured as an arc surface and is detachable.

9. The rubber sealing ring performance testing device according to claim 3, characterized in that: When the fixing block (26) contacts the blocking block (30), the lower portion of the rubber sealing ring (7) is completely immersed in the liquid in the liquid storage box (10).

10. A method for testing the performance of a rubber sealing ring using the rubber sealing ring performance testing device according to claim 1, characterized in that: The following steps are involved: The first step is to retract all the support rods (5) and sleeve the rubber sealing ring (7) that has passed the preliminary performance test into the groove of the support rod (5); Step 2: rotating the mounting shell (3) to drive the rubber seal ring (7) to rotate, and causing the liquid storage box (10) and the movable plate (11) to move towards the rubber seal ring (7) at the same time; Step 3: When the liquid storage box (10) completely immerses the rubber sealing ring (7), the moving plate (11) and the liquid storage box (10) stop moving, and the rubber sealing ring (7) is intermittently stretched by the extension and contraction of the support rod (5), so that the rubber sealing ring (7) is stretched when it rotates to the solution in the liquid storage box (10), so that the solution in the liquid storage box (10) can better penetrate into it from the small gap; Step 4: When the rubber seal ring (7) rotates to contact the cleaning cotton (12), it shrinks and the liquid on the surface of the rubber seal ring (7) is wiped by the cleaning cotton (12), so that the solution in the gap is retained; In the fifth step, when the rubber sealing ring (7) rotates to the top, it is stretched again to magnify the fine cracks, so that the detection unit can more clearly capture the image of the stretched part of the rubber sealing ring (7).

Images