A device for detecting inner and outer diameters of a rubber sealing ring

Abstract

The present invention relates to the field of rubber sealing ring detection technology, and specifically discloses a device for detecting the inner and outer diameters of a rubber sealing ring, comprising: a base, a limiting groove, a first guide rod, a first motor, a first connecting rod, and a turntable. The top of the base is provided with a plurality of limiting grooves connected to its inner cavity at equal intervals along the circumference. The two ends of the first guide rod are respectively arranged on the inner and outer sides of the inner cavity of the limiting groove. The first motor is screwed to the middle of the bottom end of the inner cavity of the base. The first motor is electrically connected to an encoder. The bottom end of the first connecting rod is locked to the output end of the first motor through a coupling. The turntable is fixedly sleeved on the top of the outer wall of the first connecting rod. This device not only avoids the high initial investment, complex maintenance requirements, and strict requirements on the use environment of visual inspection equipment, but also solves the error problem caused by the elastic deformation of the sealing ring in traditional caliper measurement. It can significantly reduce the inspection cost while ensuring measurement accuracy, and improve inspection efficiency and reliability.

Description

Technical Field

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

[0002] In the field of industrial production and manufacturing, rubber sealing rings, as a key sealing component, are widely used in various mechanical equipment, piping systems and automotive parts. They are mainly made of rubber materials and have good elasticity, flexibility and sealing performance. They can effectively prevent liquid or gas leakage and ensure the normal operation and safety of the equipment. The quality of rubber sealing rings is directly related to the sealing effect and reliability of the entire equipment. Therefore, the detection of its dimensional accuracy is particularly important.

[0003] The inner and outer diameters of rubber sealing rings are important dimensional parameters that directly affect the sealing performance and assembly accuracy of the sealing rings. If the inner and outer diameters do not meet the design requirements, it may cause difficulties in the installation process of the sealing ring, and it may not be installed correctly. It may also cause premature wear and leakage during use, thereby affecting the overall performance and life of the equipment. Therefore, accurate detection of the inner and outer diameters of rubber sealing rings is an important part of ensuring product quality and performance.

[0004] In the existing technology, the inner and outer diameters of rubber sealing rings are usually inspected by visual inspection equipment and calipers. The visual inspection equipment uses a high-resolution camera to capture the image of the sealing ring, and analyzes and processes the image through advanced image processing algorithms to measure the dimensional parameters such as the inner and outer diameters of the sealing ring. This method has the advantages of high precision, high efficiency and automation, and can obtain measurement results quickly and accurately. However, visual inspection equipment also has some shortcomings. On the one hand, its initial investment is large, including the high procurement cost of hardware equipment such as high-performance cameras and image processing units. On the other hand, the equipment needs to be calibrated and maintained regularly to ensure measurement accuracy and stability, and the maintenance cost is also relatively high. In addition, visual inspection equipment has certain requirements for the use environment, such as lighting conditions and environmental cleanliness. These factors may affect the accuracy of the measurement results.

[0005] Another commonly used detection method is to use a caliper. The caliper has the advantages of simple operation and easy portability. It can directly measure the inner and outer diameters of the rubber sealing ring. When using a caliper for measurement, the measurer fits the measuring surface of the caliper to the outer or inner diameter of the sealing ring and reads the value on the caliper to obtain the measurement result. However, since the rubber sealing ring is soft and has a certain elasticity, during the measurement process, the measuring surface of the caliper may exert pressure on the sealing ring, causing it to deform. This deformation will cause the measurement result to deviate from the actual size, thereby affecting the accuracy of the measurement. In particular, for some rubber sealing rings with thinner walls and greater elasticity, the error caused by caliper measurement may be more obvious. Summary of the Invention

[0006] The purpose of the present invention is to provide a device for detecting the inner and outer diameters of a rubber sealing ring, so as to solve the problems in the prior art of high investment cost and errors in detection results.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for detecting the inner and outer diameters of a rubber sealing ring, comprising: a base, a limit groove, a first guide rod, a first motor, a first connecting rod, a turntable, a driving groove, an outer diameter detection mechanism, a first slide column, a first slide groove and an inner support assembly, the top end of the base is provided with a plurality of limit grooves connected to its inner cavity at equal distances along the circumference, the two ends of the first guide rod are respectively arranged on the inner and outer sides of the inner cavity of the limit groove, the first motor is screwed to the middle part of the bottom end of the inner cavity of the base, the first motor is electrically connected to an encoder, the bottom end of the first connecting rod is locked to the output end of the first motor through a coupling, the turntable is fixedly sleeved on the top of the outer wall of the first connecting rod, and the top end of the turntable is evenly spaced along the circumference. The distance is provided with a plurality of driving grooves running through the upper and lower parts, and the positions of the plurality of driving grooves correspond to the positions of the plurality of limit grooves one by one. The number of the first slide posts is a plurality of, and the middle parts of the outer walls of the plurality of first slide posts can be slidably adapted and inserted into the inner sides of the inner cavities of the plurality of limit grooves respectively. The first slide post can be slidably sleeved on the outer wall of the first guide rod, and the bottom end of the outer wall of the first slide post can be slidably adapted and inserted into the inner sides of the inner cavities of the driving grooves corresponding to its positions. The top end of the first slide post has two first slide grooves along the direction of the limit groove. The inner support assembly is arranged at the top end of the first slide post, and the inner support assembly can support the rubber sealing ring and prevent the rubber sealing ring from elastic deformation. The outer diameter detection mechanism is arranged at the top end of the base.

[0008] Preferably, the inner support assembly includes: a second guide rod, a first spring, a first slider, a push block, and a first proximity switch, the two ends of the second guide rod are respectively arranged on the inner and outer sides of the inner cavity of the first slide groove, the first spring is sleeved on the inner side of the outer wall of the second guide rod, the inner end of the first spring is clamped on the inner side of the inner cavity of the first slide groove, the first slider can be slidably adapted and inserted into the outer side of the inner cavity of the first slide groove, the first slider can be slidably sleeved on the outer wall of the second guide rod, the outer end of the first spring is clamped on the outer wall of the first slider, the bottom end of the push block is arranged on the top end of the first slider, the first proximity switch is arranged at the middle part of the outer side of the bottom end of the push block, the first proximity switch is located on the outer side of the first slide column, and the first proximity switch is electrically connected to the first motor.

[0009] Preferably, the outer diameter detection mechanism includes: a gear ring, a moving component, a clamping component and a driving component, the gear ring is rotatably sleeved on the top of the outer wall of the base, the moving component is arranged at the top of the base, the clamping component is arranged on the inner side of the moving component, and the clamping component can be driven to move by the moving component, the clamping component is used to contact the outer wall of the rubber sealing ring and prevent the rubber sealing ring from being squeezed and deformed, the driving component is arranged on the outer wall of the base, and the driving component is used to drive the gear ring to rotate.

[0010] Preferably, the clamping assembly includes: a second sliding post, a clamping block, a third sliding post and a second proximity switch, the second sliding post can be slidably adapted to be inserted into the outer side of the inner cavity of the limiting groove, the second sliding post can be slidably sleeved on the outer wall of the first guide rod, the clamping block is arranged at the top end of the second sliding post, a plurality of the clamping blocks and a plurality of push blocks correspond one to one, the upper and lower ends of the third sliding post are respectively arranged at the upper and lower outer ends of the inner cavity of the clamping block, and the second proximity switch is arranged in the middle of the inner side of the inner cavity of the clamping block.

[0011] The gear train is a gear that is fixedly mounted on a cam face, and the gear train is a gear that is fixedly mounted on a cam face, and the gear train is a gear that is fixedly mounted on a cam face, and the gear train is a gear that is fixedly mounted on a cam face.

[0012] Preferably, the plurality of first gears are all meshed with the inner teeth of the gear ring, the plurality of first gears correspond one-to-one with the plurality of racks, and the plurality of first gears are respectively meshed with the plurality of racks.

[0013] Preferably, an infrared ranging sensor is provided on the outer top end of the push block, and the position of the infrared ranging sensor corresponds to the position of the clamping block.

[0014] Preferably, the distance between the first sliding block and the inner side of the first sliding groove cavity is greater than the distance between the outer wall of the first sliding column and the first proximity switch.

[0015] Preferably, the distance between the third sliding post and the outer side of the inner cavity of the third sliding groove is greater than the distance between the inner end of the rack and the second proximity switch.

[0016] The present invention provides a device for detecting the inner and outer diameters of a rubber sealing ring, which has the following beneficial effects:

[0017] 1. The present invention places a rubber sealing ring on the top of the base and causes the push block to be located in the inner cavity of the rubber sealing ring, starts the first motor, and uses the output end of the first motor to drive the turntable to rotate through the first connecting rod. The rotation of the turntable can drive the driving slot to rotate. The first sliding post is limited by the limiting groove. The rotation of the driving slot can cause the first sliding post to drive the push block to slide outward along the inner cavity of the limiting groove, so that the rubber sealing ring can be rounded by the push block until the push block contacts the inner wall of the rubber sealing ring. The push block is limited by the rubber sealing ring. When the first sliding post continues to slide outward along the inner cavity of the limiting groove, the first slider can drive the push block to move inward along the inner cavity of the first sliding groove, thereby causing the first sliding post to move to the bottom of the first proximity switch. The first proximity switch detects the first sliding post and causes the first motor to be turned off, thereby preventing the rubber sealing ring from elastic deformation. The encoder connected to the first motor detects the rotation degree of the output end of the first motor to calculate the movement distance of the push block, thereby calculating the inner diameter of the rubber sealing ring.

[0018] 2. The present invention causes the gear ring to rotate through a driving assembly. The rotation of the gear ring causes the first gear to rotate clockwise. The clockwise rotation of the first gear causes the rack to push the clamping block to move inward along the inner cavity of the limit groove until the clamping block contacts the outer wall of the rubber sealing ring. The outer wall of the rubber sealing ring can be used to squeeze the clamping block to drive the third slide column to slide outward along the inner cavity of the third slide groove, thereby causing the rack to gradually contact the second proximity switch until the second proximity switch detects the rack. The second proximity switch causes the gear ring to stop rotating, thereby preventing the clamping block from squeezing the rubber sealing ring to cause elastic deformation. The infrared ranging sensor can be used to measure the width of the rubber sealing ring, and the outer diameter of the rubber sealing ring can be reflected by calculating the movement distance of the clamping block.

[0019] 3. This device avoids the high initial investment, complex maintenance requirements and stringent requirements for the operating environment of visual inspection equipment, and solves the error problem caused by the elastic deformation of the sealing ring in traditional caliper measurement. It can significantly reduce the inspection cost while ensuring measurement accuracy, improve inspection efficiency and reliability, and ensure that the dimensional parameters of the rubber sealing ring meet the design requirements, thereby improving the overall sealing performance, assembly accuracy and service life of the equipment, providing a more economical, efficient and accurate solution for quality control in industrial production and manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 An exploded view of the present invention;

[0022] Figure 3 This is the main cross-sectional view of the push block;

[0023] Figure 4 This is the exploded view of the outer diameter detection mechanism;

[0024] Figure 5 It is a structural diagram of the push block;

[0025] Figure 6 Schematic diagram of the structure of the clamping block;

[0026] Figure 7 for Figure 2 A magnified view of point A;

[0027] Figure 8 for Figure 2 Enlarged view of point B;

[0028] Figure 9 for Figure 3 Enlarged view of point C;

[0029] Figure 10 for Figure 4 Enlarged view of point D.

[0030] In the figure: 1. base; 2. limit groove; 3. first guide rod; 4. first motor; 5. first connecting rod; 6. turntable; 7. driving groove; 8. outer diameter detection mechanism; 81. gear ring; 82. positioning seat; 83. rack; 84. second slide groove; 85. third slide groove; 86. third guide rod; 87. second slider; 88. fourth guide rod; 89. second spring; 810. second slide column; 811. clamping block; 812. third slide column; 813. second proximity switch; 814. rotating rod; 815. first gear; 816. second motor; 817. second connecting rod; 818. second gear; 9. first slide column; 10. first slide groove; 11. second guide rod; 12. first spring; 13. first slider; 14. push block; 15. first proximity switch; 16. infrared ranging sensor. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0032] See also Figures 1-10The present invention provides a technical solution for detecting the inner and outer diameters of a rubber sealing ring, comprising: a base 1, a limiting groove 2, a first guide rod 3, a first motor 4, a first connecting rod 5, a turntable 6, a driving groove 7, an outer diameter detecting mechanism 8, a first slide column 9, a first slide groove 10, a second guide rod 11, a first spring 12, a first slider 13, a push block 14, a first proximity switch 15 and an infrared ranging sensor 16. The top of the base 1 is provided with a plurality of limiting grooves 2 connected to its inner cavity at equal intervals along the circumferential direction. The two ends of the first guide rod 3 are respectively arranged on the inner and outer sides of the inner cavity of the limiting groove 2. The first motor 4 is screwed to the middle part of the bottom end of the inner cavity of the base 1. The first motor 4 is electrically connected to an encoder. The first motor 4 is a prior art and is a servo motor. Without going into details, the first motor 4 is used to drive the turntable 6 to rotate. The bottom end of the first connecting rod 5 is locked to the output end of the first motor 4 through a coupling. The turntable 6 is fixedly sleeved on the top of the outer wall of the first connecting rod 5. The top of the turntable 6 is equidistantly provided with a plurality of driving grooves 7 running through it up and down. The positions of the plurality of driving grooves 7 correspond one to one to the positions of the plurality of limiting grooves 2. The limiting grooves 2 can be used to limit the first slide post 9. The rotation of the turntable 6 can drive the driving groove 7 to rotate. The rotation of the driving groove 7 can drive the first slide post 9 to slide along the inner cavity of the limiting groove 2. There are several first slide posts 9. The middle of the outer walls of the plurality of first slide posts 9 can be slidably adapted and inserted into the inner side of the inner cavity of the plurality of limiting grooves 2. The first slide post 9 can The first spring 12 is sleeved on the inner side of the outer wall of the second guide rod 11, and the inner end of the first spring 12 is clamped on the inner side of the inner cavity of the first slide groove 10. The first spring 12 is a rotation spring, which is elastically deformed after being squeezed or stretched by external force, and returns to its initial state after the external force is removed. The spring 12 is used to support the first slider 13. The first slider 13 is slidably adapted and inserted into the outer side of the inner cavity of the first slide groove 10. The first slider 13 is slidably sleeved on the outer wall of the second guide rod 11. The outer end of the first spring 12 is clamped on the outer wall of the first slider 13. The bottom end of the push block 14 is set at the top of the first slider 13. The push block 14 is used to open the rubber sealing ring from the inside. The infrared ranging sensor 16 is set at the outer top of the push block 14. The position of the infrared ranging sensor 16 corresponds to the position of the clamping block 811. The infrared ranging sensor 16 is a prior art and will not be described in detail here. The infrared ranging sensor 16 is used to detect the distance between the push block 14 and the clamping block 811, so as to judge the width of the rubber sealing ring.A first proximity switch 15 is disposed in the middle of the outer bottom end of the push block 14. The first proximity switch 15 is located outside the first slide 9 and is electrically connected to the first motor 4. The first proximity switch 15 is conventional technology and will not be described in detail here. The first proximity switch 15 is used to control the first motor 4 to turn off. The distance between the first slider 13 and the inner side of the first chute 10 cavity is greater than the distance between the outer wall of the first slide 9 and the first proximity switch 15, ensuring that the first proximity switch 15 can detect the first slide 9. The outer diameter detection mechanism 8 is disposed at the top of the base 1 and is used to detect the outer diameter of the rubber sealing ring.

[0033] As a preferred solution, further, the outer diameter detection mechanism 8 includes: a gear ring 81, a support assembly, a rack 83, a third slide groove 85, a fourth guide rod 88, a second spring 89, a second slide column 810, a clamping block 811, a third slide column 812, a second proximity switch 813, a rotating rod 814, a first gear 815 and a driving assembly. The gear ring 81 is rotatably sleeved on the top of the outer wall of the base 1, and the driving assembly is arranged on the outer wall of the base 1. The driving assembly is used to drive the gear ring 81 to rotate, the second slide column 810 is slidably adapted to be inserted into the outside of the inner cavity of the limiting groove 2, the second slide column 810 is slidably sleeved on the outer wall of the first guide rod 3, and the clamping block 811 is arranged on the top of the second slide column 810. A plurality of clamping blocks 811 and a plurality of pushing blocks 14 correspond one to one. The clamping block 811 is used to contact the outer wall of the rubber sealing ring, so as to detect the outer diameter of the rubber sealing ring. The upper and lower ends of the third slide column 812 are respectively arranged at the upper and lower outer ends of the inner cavity of the clamping block 811. The second proximity switch 813 is arranged in the middle of the inner side of the inner cavity of the clamping block 811. The second proximity switch 813 is a prior art and will not be described in detail here. The second proximity switch 813 is used here to control the closing of the drive component. The inner side of the top of the rack 83 is provided with a third slide groove 85 that passes through the upper and lower parts along the direction of the limit groove 2. The middle part of the outer wall of the third slide column 812 can be slidably adapted and inserted into the inner side of the inner cavity of the third slide groove 85. The position of the rack 83 and the second proximity switch The position of 813 corresponds to that of the rack 83, which is used to push the clamping block 811 to move. The distance between the third slide post 812 and the outer side of the inner cavity of the third slide groove 85 is greater than the distance between the inner end of the rack 83 and the second proximity switch 813, ensuring that the second proximity switch 813 can detect the rack 83. The two ends of the fourth guide rod 88 are respectively arranged on the inner and outer sides of the inner cavity of the third slide groove 85. The third slide post 812 is slidably connected to the outer wall of the fourth guide rod 88, and the second spring 89 is connected to the inner side of the outer wall of the fourth guide rod 88. The inner end of the second spring 89 is clamped to the inner side of the inner cavity of the third slide groove 85, and the outer end of the second spring 89 is clamped to the outer wall of the third slide post 812. The second spring 89 is a rotation spring and is affected by the external After being squeezed or stretched by external force, it undergoes elastic deformation and returns to its initial state after the external force is removed. The second spring 89 is used to support the third slide column 812. The support assembly is arranged at the top of the base 1. The support assembly can support and limit the rack 83. There are several rotating rods 814. The bottom ends of the rotating rods 814 are rotatably arranged on the outside of the top of the base 1 through bearings at equal intervals along the circumferential direction. The first gear 815 is sleeved on the outer wall of the rotating rod 814 and locked by a top screw. The first gears 815 are all engaged with the inner teeth of the gear ring 81. The first gears 815 correspond to the racks 83 one by one, and the first gears 815 are engaged with the racks 83 respectively.

[0034] As a preferred solution, further, the driving assembly includes: a second motor 816, a second connecting rod 817 and a second gear 818, the second motor 816 is screwed to the outer wall of the base 1, the second motor 816 is electrically connected to the second proximity switch 813, the second motor 816 is electrically connected to the encoder, the second connecting rod 817 is locked to the output end of the second motor 816 through a coupling, the second gear 818 is sleeved on the outer wall of the second connecting rod 817 and locked by a top screw, and the second gear 818 is engaged with the outer teeth of the gear ring 81.

[0035] As a preferred solution, further, the support assembly includes: a positioning seat 82, a second slide groove 84, a third guide rod 86 and a second slider 87. The number of positioning seats 82 is several, and several positioning seats 82 are respectively arranged on the outer side of the top end of the base 1 at equal distances along the circumferential direction. Several positioning seats 82 correspond one-to-one to several racks 83, and the top of the rack 83 is provided with a second slide groove 84. The two ends of the third guide rod 86 are respectively arranged on the inner and outer sides of the inner cavity of the second slide groove 84. The second slider 87 is slidably embedded in the inner cavity of the second slide groove 84. The second slider 87 is slidably connected to the outer wall of the third guide rod 86, and the top of the second slider 87 is arranged at the bottom end of the positioning seat 82.

[0036] The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process. The specific operations are as follows.

[0037] Step 1: When in use, place the rubber sealing ring on the top of the base 1, and cause the push block 14 to be located in the inner cavity of the rubber sealing ring, start the first motor 4, and use the output end of the first motor 4 to drive the turntable 6 to rotate through the first connecting rod 5. The rotation of the turntable 6 can drive the driving slot 7 to rotate. Since the first sliding post 9 can be limited by the limiting slot 2, when the driving slot 7 rotates, the first sliding post 9 can be prompted to slide outward along the inner cavity of the limiting slot 2, so that the first sliding post 9 can drive the push block 14 to move outward until the push block 14 contacts the inner wall of the rubber sealing ring, and the first sliding post 9 continues to move outward along the inner cavity of the limiting slot 2. Sliding, the inner wall of the rubber sealing ring can be used to block the push block 14, so that the push block 14 can be used to drive the first slider 13 to move inward along the first slide groove 10, and squeeze the first spring 12 to cause elastic deformation, until the first slide post 9 moves to the bottom of the first proximity switch 15. When the first proximity switch 15 detects the first slide post 9, the first proximity switch 15 controls the first motor 4 to turn off, and the first slide post 9 stops moving, so that the degree of rotation of the output end of the first motor 4 is calculated by the encoder connected to the first motor 4, so that the moving distance of the push block 14 can be calculated, and then the inner diameter of the rubber sealing ring can be calculated by the moving distance of the push block 14;

[0038] Step 2, start the second motor 816, use the output end of the second motor 816 to drive the second gear 818 to rotate through the second connecting rod 817, the rotation of the second gear 818 can prompt the gear ring 81 to rotate, the rotation of the gear ring 81 can prompt the first gear 815 to rotate clockwise, the clockwise rotation of the first gear 815 can prompt the rack 83 to push the clamping block 811 to slide inward along the inner cavity of the limiting groove 2 until the clamping block 811 contacts the outer wall of the rubber sealing ring, when the rack 83 continues to push the clamping block 811 to slide inward along the inner cavity of the limiting groove 2, the outer wall of the rubber sealing ring can be used to block the clamping block 811, thereby prompting the third sliding post 812 It slides outward along the inner cavity of the third slide groove 85 and squeezes the second spring 89 to cause elastic deformation, thereby causing the rack 83 to gradually move closer to the clamping block 811 until the second proximity switch 813 detects the rack 83. The second proximity switch 813 is used to control the second motor 816 to be turned off, thereby causing the rack 83 to stop moving. The encoder connected to the second motor 816 is used to calculate the degree of rotation of the output end of the second motor 816, and the moving distance of the rack 83 can be calculated, so that the outer diameter of the rubber sealing ring can be calculated, and the infrared ranging sensor 16 is used to detect the distance between the push block 14 and the clamping block 811, so that the width of the rubber sealing ring can be determined.

[0039] This device avoids the high initial investment, complex maintenance requirements and stringent requirements for the operating environment of visual inspection equipment, and solves the error problem caused by the elastic deformation of the sealing ring in traditional caliper measurement. It can significantly reduce inspection costs while ensuring measurement accuracy, improve inspection efficiency and reliability, and ensure that the dimensional parameters of the rubber sealing ring meet the design requirements, thereby improving the overall sealing performance, assembly accuracy and service life of the equipment, providing a more economical, efficient and accurate solution for quality control in industrial production and manufacturing.

[0040] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting inner and outer diameters of a rubber sealing ring, characterized in that: include: A base (1), wherein a top end of the base (1) is provided with a plurality of limiting grooves (2) equidistantly spaced along the circumference and communicating with the inner cavity thereof; A first guide rod (3), wherein both ends of the first guide rod (3) are respectively arranged on the inner and outer sides of the inner cavity of the limiting groove (2); A first motor (4), the first motor (4) being screw-connected to the middle portion of the bottom end of the inner cavity of the base (1), and the first motor (4) being electrically connected to an encoder; a first connecting rod (5), the bottom end of which is locked to the output end of the first motor (4) via a coupling; A turntable (6), the turntable (6) being fixedly sleeved on the top of the outer wall of the first connecting rod (5), the top of the turntable (6) being provided with a plurality of driving grooves (7) extending vertically and equidistantly along the circumferential direction, the positions of the plurality of driving grooves (7) corresponding to the positions of the plurality of limiting grooves (2); A first sliding column (9), wherein the number of the first sliding columns (9) is several, and the middle portions of the outer walls of the several first sliding columns (9) are respectively slidably adapted to be inserted into the inner side of the inner cavity of the several limiting grooves (2), the first sliding column (9) is slidably sleeved on the outer wall of the first guide rod (3), and the bottom end of the outer wall of the first sliding column (9) is slidably adapted to be inserted into the inner side of the inner cavity of the driving groove (7) corresponding to its position, and the top end of the first sliding column (9) is provided with two first sliding grooves (10) along the direction of the limiting groove (2); An inner support assembly, the inner support assembly being arranged at the top end of the first sliding column (9), the inner support assembly being capable of supporting the rubber sealing ring and preventing the rubber sealing ring from elastically deforming; An outer diameter detection mechanism (8), the outer diameter detection mechanism (8) being arranged at the top end of the base (1); The inner support assembly comprises: a second guide rod (11), wherein both ends of the second guide rod (11) are respectively arranged on the inner and outer sides of the inner cavity of the first chute (10); a first spring (12), wherein the first spring (12) is sleeved on the inner side of the outer wall of the second guide rod (11), and the inner end of the first spring (12) is clamped on the inner side of the inner cavity of the first sliding groove (10); A first slider (13), the first slider (13) is slidably adapted to be inserted into the outer side of the inner cavity of the first slide groove (10), the first slider (13) is slidably sleeved on the outer wall of the second guide rod (11), and the outer end of the first spring (12) is clamped on the outer wall of the first slider (13); A push block (14), wherein the bottom end of the push block (14) is arranged at the top end of the first sliding block (13); a first proximity switch (15), the first proximity switch (15) being arranged at the middle portion of the outer side of the bottom end of the push block (14), the first proximity switch (15) being located on the outer side of the first sliding column (9), and the first proximity switch (15) being electrically connected to the first motor (4); The outer diameter detection mechanism (8) comprises: A gear ring (81), the gear ring (81) being rotatably sleeved on the top end of the outer wall of the base (1); A moving component, the moving component being arranged at the top of the base (1); A clamping assembly, the clamping assembly being arranged on the inner side of the moving assembly and capable of being driven to move by the moving assembly, the clamping assembly being used to contact the outer wall of the rubber sealing ring and prevent the rubber sealing ring from being squeezed and deformed; A drive assembly is provided on the outer wall of the base (1), and is used to drive the gear ring (81) to rotate.

2. A rubber sealing ring inner and outer diameter detection device according to claim 1, characterized in that: The clamping assembly comprises: A second sliding post (810), the second sliding post (810) can be slidably adapted to be inserted into the outer side of the inner cavity of the limiting groove (2), and the second sliding post (810) can be slidably sleeved on the outer wall of the first guide rod (3); A clamping block (811), the clamping block (811) is arranged at the top end of the second sliding column (810), and a plurality of the clamping blocks (811) and a plurality of the pushing blocks (14) correspond one to one; a third sliding post (812), wherein upper and lower ends of the third sliding post (812) are respectively arranged at the upper and lower outer ends of the inner cavity of the clamping block (811); A second proximity switch (813), the second proximity switch (813) is arranged in the middle of the inner side of the inner cavity of the clamping block (811).

3. A device for detecting inner and outer diameters of a rubber sealing ring according to claim 2, characterized in that: The mobile component includes: A rack (83), wherein the inner side of the top end of the rack (83) is provided with a third sliding groove (85) extending vertically along the direction of the limiting groove (2), and the middle portion of the outer wall of the third sliding column (812) is slidably adapted to be plugged into the inner side of the inner cavity of the third sliding groove (85), and the position of the rack (83) corresponds to the position of the second proximity switch (813); a fourth guide rod (88), wherein both ends of the fourth guide rod (88) are respectively arranged on the inner and outer sides of the inner cavity of the third slide groove (85), and the third slide column (812) is slidably sleeved on the outer wall of the fourth guide rod (88); a second spring (89), wherein the second spring (89) is sleeved on the inner side of the outer wall of the fourth guide rod (88), the inner end of the second spring (89) is clamped on the inner side of the inner cavity of the third slide groove (85), and the outer end of the second spring (89) is clamped on the outer wall of the third slide column (812); A support assembly, the support assembly being arranged at the top end of the base (1), and being capable of supporting and limiting the rack (83); Rotating rods (814), the number of the rotating rods (814) is several, and the bottom ends of the several rotating rods (814) are equidistantly arranged along the circumferential direction and rotatably arranged on the outer side of the top end of the base (1) through bearings; A first gear (815) is sleeved on the outer wall of the rotating rod (814) and is locked by a top screw.

4. A rubber sealing ring inner and outer diameter detection device according to claim 3, characterized in that: The plurality of first gears (815) are all meshed with the inner teeth of the gear ring (81), the plurality of first gears (815) correspond one-to-one with the plurality of racks (83), and the plurality of first gears (815) are respectively meshed with the plurality of racks (83).

5. The device for detecting inner and outer diameters of a rubber sealing ring according to claim 4, characterized in that: An infrared distance measuring sensor (16) is provided at the outer top end of the push block (14), and the position of the infrared distance measuring sensor (16) corresponds to the position of the clamping block (811).

6. The device for detecting inner and outer diameters of a rubber sealing ring according to claim 5, characterized in that: The distance between the first sliding block (13) and the inner side of the inner cavity of the first sliding groove (10) is greater than the distance between the outer wall of the first sliding column (9) and the first proximity switch (15).

7. A device for detecting inner and outer diameters of a rubber sealing ring according to claim 6, characterized in that: The distance between the third sliding column (812) and the outer side of the inner cavity of the third sliding groove (85) is greater than the distance between the inner end of the rack (83) and the second proximity switch (813).

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