Rubber sealing ring online detection system and detection method

Abstract

The invention relates to the technical field of online detection of sealing rings, and provides an online detection system and a detection method for a rubber sealing ring, which can be matched with a conveying line of the rubber sealing ring to form online detection and execute active detection on the rubber sealing ring by adopting an active alignment and follow-up operation form, so that the detection items are richer, the detection dimension is more comprehensive, and the detection efficiency is improved. The detection process has extremely small influence on normal conveying operation of the rubber sealing rings, the positions of the rubber sealing rings can be adjusted after detection is completed, rapid identification and distinguishing of unqualified products are facilitated, the overall function is more complete, and the detection device is more practical and comprises a supporting frame and an alternate detection assembly, and a conveying belt is installed on the supporting frame; the outer ring face of the conveying belt is of a smooth face structure, a variable frequency motor is installed outside the supporting frame and used for driving the conveying belt to move, two reciprocating carriers are installed on the supporting frame, the alternate detection assembly comprises two movable installation frames, and the two movable installation frames are installed on the two reciprocating carriers respectively.

Description

Technical Field

[0001] This invention relates to the field of online testing technology for rubber seals, specifically to an online testing system and method for rubber seals. Background Technology

[0002] As is well known, rubber seals are components used to install on various mechanical equipment. They are annular sealing elements that play a sealing role under specified temperatures, pressures, and different liquid and gas environments. Rubber seals are characterized by being soft, easy to process, elastic, and non-corrosive to contact surfaces. The rubber seal online detection system is an intelligent quality control system that collects data in real time during the production process and automatically determines the pass / fail status.

[0003] A search revealed Chinese patent application CN202510324747.0, which discloses a testing device and method for a sealing ring. The device roughly comprises a main structure, a pressing structure, a supporting structure, and two pairs of positioning structures. The pressing structure is fixedly mounted on the main structure, and the supporting structure is fixedly mounted on the main structure and located below the pressing structure. The two pairs of positioning structures are equidistantly positioned on the main structure, with each pair located on either side of the supporting structure. The main structure controls and supports the sealing ring under test, the positioning structures position the sealing ring at the center, and the pressing structure performs a pressing test on the positioned sealing ring. In use, the positioning structures and the supporting structure are arranged circumferentially at 30-degree intervals, clamping the sealing ring from six directions to ensure accurate detection. A Chinese patent application (CN201911036073.5) discloses a visual inspection system for sealing rings, which is roughly described as including a base, a support frame, industrial cameras, and a computer. Multiple industrial cameras are present. A rotating mechanism is mounted on the top surface of the base, and a transparent platform is mounted on the top surface of the rotating mechanism. Multiple sets of inspection holes are radially formed on the transparent platform. Each set of inspection holes includes multiple transparent holes arranged along the circumference of the transparent platform. An illumination device is also mounted on the base below the transparent platform. In use, by having multiple sets of inspection holes radially formed on the transparent platform, with each set corresponding to one industrial camera, multiple sealing rings can be inspected simultaneously, thus increasing the inspection efficiency.

[0004] While the aforementioned existing technical solutions for rubber seal ring testing can achieve the testing of seal rings, they still have significant shortcomings. For example, although the former solution uses a fixed clamping testing structure, it does not address how to achieve rubber seal ring testing while minimizing the impact on rubber seal ring production and transportation. Although the latter solution can be integrated with the seal ring conveyor line to form online testing, its testing method is relatively simple, its testing dimensions are limited, and it lacks relevant technical measures to effectively distinguish between qualified and unqualified products after testing. The overall functional completeness and practical application of the solutions need further improvement. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an online inspection system and method for rubber seals. This system can be integrated with a rubber seal conveyor line to form an online inspection system. It employs active alignment and follow-up operation to perform proactive inspection of the rubber seals, offering a wider range of inspection items and more comprehensive inspection dimensions. Simultaneously, the inspection process has minimal impact on the normal conveying operation of the rubber seals. After inspection, the position of the rubber seals can be adjusted, facilitating rapid identification and differentiation of defective products. Overall, the system boasts higher functional integrity and stronger field applicability.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an online detection system for rubber sealing rings, comprising a support frame and an alternating detection component. A conveyor belt is mounted on the support frame, the outer ring surface of the conveyor belt being a smooth surface. A variable frequency motor is mounted outside the support frame for driving the conveyor belt's movement. Two reciprocating moving carriers are mounted on the support frame. The alternating detection component includes two movable mounting frames, each mounted on one of the two reciprocating moving carriers. Each movable mounting frame is equipped with a counter-rotation adjustment mechanism. Each mechanism is equipped with a lower support adjustment frame and an upper pressure adjustment frame. Each of the two lower support adjustment frames contains a lower support block frame, and each of the two upper pressure adjustment frames contains an upper pressure ring frame. The two lower support block frames are respectively matched with the two upper pressure ring frames. Each upper pressure ring frame has two internally connected mounting cavities, and each of the two internally connected mounting cavities contains a pressure sensor and a machine vision sensor. Each of the two upper pressure ring frames contains an auxiliary adjustment device. Each of the two upper pressure adjustment frames is equipped with a first servo motor, which provides operating power to the two auxiliary adjustment devices.

[0007] Preferably, an upper sliding connecting frame is fixedly connected to the upper pressure ring frame, and an upper threaded rod is threadedly connected to the upper sliding connecting frame. The upper threaded rod is rotatably connected to the upper pressure adjustment frame, and the upper sliding connecting frame is slidably connected to the upper pressure adjustment frame. A quick-connect pipe is installed on the upper sliding connecting frame, and the quick-connect pipe is fixedly connected to the upper pressure adjustment frame. A lower sliding connecting frame is fixedly connected to the bottom end of the lower support block frame, and a lower threaded rod is threadedly connected to the lower support adjustment frame. The lower sliding connecting frame is slidably engaged with the lower support adjustment frame.

[0008] Preferably, the auxiliary positioning device includes a turntable frame, which is rotatably connected between an upper pressure ring frame and an upper sliding frame that are fixedly connected to each other. A driven gear ring is fixedly connected to the outside of the turntable frame. A drive gear ring is installed on the output shaft of the first servo motor. The drive gear ring meshes with the driven gear ring. A lower extension mounting cylinder is fixedly connected to the bottom end of the turntable frame. A round-headed drive rod is provided inside the lower extension mounting cylinder. A conical spring is fixedly connected to the round-headed drive rod. The conical spring is fixedly connected inside the lower extension mounting cylinder.

[0009] Preferably, the top of the turntable frame has a central hole and a connecting groove. One end of the connecting groove is connected to the central hole, and the other end of the connecting groove is connected to the lower extension mounting cylinder. A bridging plate is fixedly connected to the top of the round-headed drive rod. The bridging plate is disposed in the connecting groove. A valve ring is fixedly connected to the end of the bridging plate away from the round-headed drive rod. The bottom end of the valve ring is provided with an inner chamfer. A central column is disposed in the central hole. The top end of the central column is provided with an outer chamfer that matches the inner chamfer. Three support plates are fixedly connected to the outside of the central column. The three support plates are fixedly connected to the central hole.

[0010] Preferably, each of the two counter-rotation adjustment mechanisms includes an upper counter-rotation arm, a lower counter-rotation arm, and a second servo motor. The two upper counter-rotation arms are rotatably connected to the two movable mounting frames, and the two lower counter-rotation arms are rotatably connected to the two movable mounting frames. The two second servo motors are respectively installed outside the two movable mounting frames and are used to drive the rotation of the two upper counter-rotation adjustment frames. Each of the two upper counter-rotation arms is equipped with an upper counter-rotation gear, and each of the two upper counter-rotation gears is meshed with and connected to a lower counter-rotation gear. The two lower counter-rotation gears are respectively fixedly connected to the two lower counter-rotation arms.

[0011] Preferably, both reciprocating moving carriers include track bars and external rack frames. Both track bars are fixedly connected to the support frame, and the two external rack frames are respectively fixedly connected to the left and right sides of the support frame. Each track bar is provided with a sliding sleeve, and each sliding sleeve is matched with a pressing frame. The two pressing frames are respectively fixedly connected to the two movable mounting frames. Each movable mounting frame is provided with a pressing groove, and the two pressing grooves are respectively matched with the two sliding sleeves. Each pressing frame is equipped with a third servo motor, and each of the output shafts of the two third servo motors is equipped with an external gear, which meshes with the two external rack frames.

[0012] Preferably, the drive gear ring is fixedly connected to a prism shaft, a prism sleeve is fixedly installed on the output shaft of the first servo motor, the prism shaft is slidably connected to the prism sleeve, and the upper sliding bracket has a through hole that matches the prism sleeve.

[0013] Preferably, the upper sliding frame has a central opening, which is coaxially arranged with the central hole. A side passage cavity is provided inside the upper sliding frame. A telescopic tube is fixedly connected to the upper sliding frame. The telescopic tube communicates with the quick-connect tube, and the side passage cavity communicates with the telescopic tube.

[0014] Preferably, a drive roller and a driven roller are rotatably connected inside the support frame, the output shaft of the variable frequency motor is drivenly connected to the drive roller, both the drive roller and the driven roller are drivenly engaged with the conveyor belt, and both the drive roller and the driven roller are provided with a left limit ring and a right limit ring that match the conveyor belt.

[0015] A detection method for an online rubber seal testing system includes the following steps: S1. First, power on the variable frequency motor, the first servo motor, the counter-rotation adjustment mechanism and the auxiliary adjustment device. After the wiring is completed, it should be run under no-load to ensure that the wiring is normal. Then, install the signal processing host to match the pressure sensor and the machine vision sensor. The signal processing host realizes the real-time reading and processing of the signals from the pressure sensor and the machine vision sensor. After the installation is completed, the signals of the pressure sensor and the machine vision sensor are calibrated to complete the preparation work before powering on. S2. Set relevant testing parameters according to the specifications of the rubber sealing ring to be tested, adjust the output frequency of the variable frequency motor, determine the conveying speed of the conveyor belt, and adjust the movement mode of the lower support rotating frame and the upper pressure rotating frame on the two movable mounting frames through the counter-rotation adjustment mechanism so that the fitting gap between the lower support block frame and the upper pressure ring frame is adapted to the size of the sealing ring to be tested. At the same time, set the movement trajectory and alternation frequency of the two reciprocating moving carriers. S3. After setting, place the rubber sealing ring to be tested at the beginning of the conveyor belt, start the variable frequency motor, and drive the conveyor belt to move, conveying the rubber sealing ring to be tested at a constant speed. According to the position of the rubber sealing ring, the reciprocating carrier moves to realize the alternating movement of the two moving mounting frames, so that the moving mounting frame and the corresponding rubber sealing ring form a position following. When the moving mounting frame moves to the side of the corresponding rubber sealing ring, the lower support rotating frame is driven to rise through the counter-rotation adjustment mechanism. During this process, the corresponding upper pressure rotating frame descends, so that the lower support block frame supports the conveyor belt under the rubber sealing ring, while the corresponding upper pressure ring frame presses on the rubber sealing ring from top to bottom, realizing the clamping and positioning of the rubber sealing ring. S4. Gas is then pumped into the upper pressure ring frame to increase the pressure in the space enclosed by the rubber seal ring, conveyor belt, and upper pressure ring frame. During this process, the corresponding pressure sensor simultaneously detects the pressure data inside the rubber seal ring, and the machine vision sensor simultaneously captures the surface image of the rubber seal ring. The detected pressure data and image data are transmitted to the signal processing host in real time. The signal processing host quickly analyzes and compares the data to determine whether the rubber seal ring has problems such as unqualified pressure bearing or surface defects, and records the detection results. S5. During the alternating clamping and testing process, the two movable mounting frames will alternately change position for testing, enabling the two movable mounting frames to switch between front and rear positions. This allows the two movable mounting frames to follow the corresponding rubber sealing rings to complete the testing operation, maintaining the stable movement of the conveyor belt while significantly improving testing efficiency. During the testing process, the first servo motor drives the corresponding auxiliary adjustment device to operate, realizing the correction of the testing position of the rubber sealing ring to be tested on the conveyor belt and the adjustment of the position of the rubber sealing ring on the conveyor belt after testing. This ensures the testing operation while also facilitating the lateral sorting operation after the testing of unqualified rubber sealing rings.

[0016] Compared with the prior art, the present invention provides an online detection system and method for rubber sealing rings, which has the following advantages: (1). In this invention, the design of alternating detection components facilitates the creation of installation positions for pressure sensors and machine vision sensors, and enables pressure sensors and machine vision sensors to be positioned relative to the conveyor belt for detection, thereby creating a detection environment for the rubber sealing ring to be detected.

[0017] (2). In this invention, the design of the reciprocating moving carrier creates an installation station and reciprocating motion power for the mobile mounting frame, so as to ensure that the alternating detection component can achieve dynamic position adjustment and follow-up synchronous operation relative to the rubber sealing ring.

[0018] (3). In this invention, through the design of the rotation adjustment mechanism, the lower support adjustment frame and the upper pressure adjustment frame on the mobile mounting frame can be synchronously adjusted relative to each other, which facilitates the lower support block frame to be supported and positioned relative to the conveyor belt, and also facilitates the upper pressure ring frame to be pressed and positioned relative to the rubber sealing ring, while facilitating the relative movement of the two mobile mounting frames.

[0019] (4). In this invention, the design of the auxiliary adjustment device enables the position drive of the rubber sealing ring located on the conveyor belt. This not only enables the alignment and centering adjustment of the rubber sealing ring to be tested on the conveyor belt to ensure its precise alignment with the upper pressure ring frame, but also enables the unqualified rubber sealing ring to be driven away from the detection position of the conveyor belt after the test, so as to achieve rapid differentiation and unloading of unqualified products. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the entire invention; Figure 2 For the present invention Figure 1 A magnified schematic diagram of the partial structure at point A in the middle; Figure 3 This is a three-dimensional structural diagram showing the disassembled cooperation of the movable mounting frame, lower rotating arm, and pressing frame of the present invention. Figure 4 This is a three-dimensional structural diagram showing the combination of the upper pressure ring frame, the first servo motor, and the upper sliding frame of the present invention. Figure 5 This is a three-dimensional structural diagram of the stepped cross-section of the upper pressure ring frame, turntable frame, and central column of the present invention. Figure 6 This is a three-dimensional structural diagram showing the cooperation between the upper sliding frame and the telescopic tube of the present invention. Figure 7 This is a three-dimensional structural diagram of the invention viewed from below. Figure 8 This is a three-dimensional structural diagram of the present invention, showing the upper pressure ring frame, turntable frame, and central column in a stepped cross-section, viewed from below. Figure 9 This is a three-dimensional structural diagram of the turntable frame, the lower mounting cylinder, and the three support plates of the present invention. Figure 10 This is a bottom-view three-dimensional structural diagram showing the combined upper pressure ring frame, first servo motor, and upper sliding frame of the present invention. Figure 11 This is a three-dimensional structural diagram of the relative rotation and opening of the lower support adjustment frame and the upper pressure adjustment frame of the present invention; Figure 12 This is a three-dimensional structural diagram of the lower support swivel frame and the upper pressure swivel frame of the present invention, showing another angle at which they rotate and open relative to each other. Figure 13This is a partial cross-sectional three-dimensional structural schematic diagram of the cooperation between the lower support adjustment frame, the upper pressure adjustment frame, and the lower sliding connecting frame of the present invention. Figure 14 This is a three-dimensional structural diagram of the round-headed drive rod, bridge plate, and valve ring of the present invention. Figure 15 This is a schematic diagram illustrating the principle of how the round-headed drive rod of the present invention adjusts the rubber sealing ring to be tested relative to the conveyor belt for centering. Figure 16 This is a schematic diagram illustrating the principle of how the round-headed drive rod of the present invention adjusts the offset of the defective rubber sealing ring relative to the conveyor belt.

[0021] In the diagram: 1. Support frame; 2. Conveyor belt; 3. Variable frequency motor; 4. Movable mounting frame; 5. Lower support adjustment frame; 6. Upper pressure adjustment frame; 7. Lower support block frame; 8. Upper pressure ring frame; 9. Internal connecting mounting cavity; 10. Pressure sensor; 11. Machine vision sensor; 12. First servo motor; 13. Upper sliding connecting frame; 14. Upper threaded rod; 15. Quick-connect pipe; 16. Lower sliding connecting frame; 17. Lower threaded rod; 18. Turntable frame; 19. Driven gear ring; 20. Drive gear ring; 21. Lower extension mounting cylinder; 22. Round head drive rod; 23. Conical spring; 24. Center hole; 25. Connecting groove; 26. Bridge 27. Connecting plate; 28. Valve ring; 29. ​​Inner chamfer; 30. Center column; 31. Outer chamfer; 32. Three-branch plate; 33. Upper counter-rotating arm; 34. Lower counter-rotating arm; 35. Second servo motor; 36. Upper counter-rotating gear; 37. Lower counter-rotating gear; 38. Track bar; 39. Outer rack frame; 40. Sliding sleeve; 41. Pressing frame; 42. Press-in groove; 43. Third servo motor; 44. External gear; 45. Prism shaft; 46. Prism sleeve; 47. Through hole; 48. Center opening; 49. Side through cavity; 50. Telescopic tube; 51. Drive roller; 52. Driven roller; 53. Left limit ring; 54. Right limit ring. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] For examples, please refer to Figures 1-16An online detection system for rubber sealing rings includes a support frame 1 and an alternating detection assembly. A conveyor belt 2 is mounted on the support frame 1, and the outer ring surface of the conveyor belt 2 has a smooth structure. A variable frequency motor 3 is mounted outside the support frame 1, driving the movement of the conveyor belt 2. A drive roller 50 and a driven roller 51 are rotatably connected inside the support frame 1. The output shaft of the variable frequency motor 3 is connected to the drive roller 50. Both the drive roller 50 and the driven roller 51 are driven by the conveyor belt 2, and both the drive roller 50 and the driven roller 51 are equipped with a left limiting ring 52 and a right limiting ring 53 matching the conveyor belt 2. Two reciprocating moving carriers are mounted on the support frame 1. The alternating detection assembly includes two movable mounting frames 4, which are respectively mounted on two reciprocating... On the mobile carrier, two mobile mounting frames 4 are each equipped with a counter-rotation adjustment mechanism. Each of the two counter-rotation adjustment mechanisms is equipped with a lower support counter-rotation frame 5 and an upper pressure counter-rotation frame 6. Each counter-rotation adjustment mechanism includes an upper counter-rotation arm 32, a lower counter-rotation arm 33, and a second servo motor 34. The two upper counter-rotation arms 32 are rotatably connected to the two mobile mounting frames 4, and the two lower counter-rotation arms 33 are rotatably connected to the two mobile mounting frames 4, respectively. The two second servo motors 34 are respectively mounted outside the two mobile mounting frames 4 and are used to drive the rotation of the two upper pressure counter-rotation frames 6. Each of the two upper counter-rotation arms 32 is equipped with an upper counter-rotation gear 35, and both upper counter-rotation gears 35 are meshed with and connected to a lower counter-rotation gear 36. The two lower counter-rotation gears 36 are respectively... Fixedly connected to two lower rotating arms 33, the design of the counter-rotation adjustment mechanism enables synchronous relative adjustment of the lower support rotating frame 5 and the upper pressure rotating frame 6 on the movable mounting frame 4. This facilitates the support and positioning of the lower support block frame 7 relative to the conveyor belt 2, and also facilitates the downward pressing and positioning of the upper pressure ring frame 8 relative to the rubber sealing ring. Simultaneously, it facilitates the relative movement of the two movable mounting frames 4. Each of the two lower support rotating frames 5 contains a lower support block frame 7, and each of the two upper pressure rotating frames 6 contains an upper pressure ring frame 8. An upper sliding connecting frame 13 is fixedly connected to the upper pressure ring frame 8. The upper sliding connecting frame 13 is threadedly connected to an upper threaded rod 14, which is rotatably connected to the upper pressure rotating frame 6. The upper sliding connecting frame 13 is slidably connected to the upper pressure rotating frame 6, and a quick-connect pipe is installed through the upper sliding connecting frame 13. 15. Quick-connect pipe 15 is fixedly connected to the upper pressure adjustment frame 6. The bottom end of the lower support block frame 7 is fixedly connected to the lower sliding connecting frame 16. The lower sliding connecting frame 16 is threadedly connected to the lower threaded rod 17. The lower threaded rod 17 is rotatably connected to the lower support adjustment frame 5. The lower sliding connecting frame 16 and the lower support adjustment frame 5 are slidably engaged. By adjusting the upper threaded rod 14 and the lower threaded rod 17 respectively, the relative positions between the upper pressure ring frame 8 and the upper pressure adjustment frame 6, as well as the relative positions between the lower sliding connecting frame 16 and the lower support adjustment frame 5, can be adjusted. Finally, the parallel distance between the upper pressure ring frame 8 and the lower support block frame 7 can be adjusted after they rotate relative to each other to accommodate rubber sealing rings of different thicknesses. It can also accommodate rubber sealing rings of the same specification and model to form different compression ranges.

[0024] It should be further explained that the two lower support blocks 7 are respectively matched with the two upper pressure ring frames 8. The upper pressure ring frame 8 is provided with two internally connected mounting cavities 9. Each of the two internally connected mounting cavities 9 is equipped with a pressure sensor 10 and a machine vision sensor 11. Each of the two upper pressure ring frames 8 is equipped with an auxiliary adjustment device. Each of the two upper pressure adjustment frames 6 is equipped with a first servo motor 12. The two first servo motors 12 provide operating power for the two auxiliary adjustment devices. The auxiliary adjustment device includes a turntable frame 18, which is rotatably connected between the upper pressure ring frame 8 and the upper sliding frame 13 that are fixedly connected to each other. A driven gear ring 19 is fixedly connected to the outside of the turntable frame 18. A drive gear ring 20 is installed on the output shaft of the first servo motor 12. The drive gear ring 20 and the driven gear ring 19 are connected to the upper pressure ring frame 8 and the upper sliding frame 13 that are fixedly connected to each other. The driven gear ring 19 engages with the bottom of the turntable frame 18, and a lower extension mounting cylinder 21 is fixedly connected to the bottom end. A round-headed drive rod 22 is installed inside the lower extension mounting cylinder 21, and a conical spring 23 is fixedly connected to the round-headed drive rod 22. The conical spring 23 is fixedly connected inside the lower extension mounting cylinder 21. Through the design of the auxiliary adjustment device, the position of the rubber sealing ring located on the conveyor belt 2 can be driven. This can both achieve the alignment and centering adjustment of the rubber sealing ring to be tested on the conveyor belt 2 to ensure its precise alignment with the upper pressure ring frame 8, and drive the unqualified rubber sealing ring away from the detection position of the conveyor belt 2 after the test, so as to achieve rapid separation and unloading of unqualified products. The top of the turntable frame 18 is provided with a central hole 24 and a connecting groove 25. One end of the connecting groove 25 is connected to the central hole 24. The other end of the groove 25 is connected to the lower extension mounting cylinder 21. A bridging plate 26 is fixedly connected to the top of the round-headed drive rod 22. The bridging plate 26 is set in the connecting groove 25. A valve ring 27 is fixedly connected to the end of the bridging plate 26 away from the round-headed drive rod 22. An inner chamfer 28 is provided at the bottom end of the valve ring 27. A central column 29 is provided in the central hole 24. An outer chamfer 30 matching the inner chamfer 28 is provided at the top end of the central column 29. Three support plates 31 are fixedly connected to the outside of the central column 29. The three support plates 31 are fixedly connected in the central hole 24, so that the gas passage between the quick-connect pipe 15 and the upper pressure ring frame 8 can be connected after the upper pressure ring frame 8 forms contact and pressure with the conveyor belt 2, and closed when the upper pressure ring frame 8 separates from the conveyor belt 2. When the round-headed drive rod 22 is not in contact with the conveyor belt 2, it will protrude from the bottom side of the upper pressure ring frame 8 under the elastic action of the cone spring 23. Therefore, as the upper pressure ring frame 8 rotates and falls closer to the conveyor belt 2, the round-headed drive rod 22 will first make contact with the conveyor belt 2. As the upper pressure ring frame 8 rotates and falls closer to the conveyor belt 2, the cone spring 23 will be elastically stretched, thus the round-headed drive rod 22 will be pushed upward relative to the upper pressure ring frame 8. Through the action of the bridging plate 26, the round-headed drive rod 22 will drive the valve ring 27 to move during its movement, thereby causing the valve ring 27 to move away from the central column 29. During this process, gas will pass through the gap between the inner chamfer 28 and the outer chamfer 30.Conversely, when the support provided by the conveyor belt 2 to the round-headed drive bar 22 fails, the inner chamfer 28 and the outer chamfer 30 will re-fit under the elastic reset action of the conical spring 23, eliminating the gap through which gas passes and blocking the gas passage. The alternating detection component design facilitates the creation of installation positions for the pressure sensor 10 and the machine vision sensor 11, allowing them to be positioned relative to the conveyor belt 2 for detection, thus creating a suitable environment for the rubber sealing ring to be inspected.

[0025] Furthermore, both reciprocating moving carriers include track bars 37 and external rack frames 38. The two track bars 37 are fixedly connected within the support frame 1, and the two external rack frames 38 are fixedly connected to the left and right sides of the support frame 1, respectively. Each track bar 37 is equipped with a sliding sleeve 39, and each sliding sleeve 39 is fitted with a pressing frame 40. The two pressing frames 40 are fixedly connected to the two movable mounting frames 4, and each movable mounting frame 4 is equipped with a pressing groove 41, which matches the two sliding sleeves 39. Each pressing frame 40 is equipped with a third servo motor 42, and the output shafts of the two third servo motors 42 are equipped with external gears 43, which mesh with the two external rack frames 38, respectively. Through the design of the reciprocating moving carriers, an installation position and reciprocating motion power are created for the movable mounting frames 4, ensuring that the alternating detection components can operate in tandem. To achieve dynamic position adjustment and synchronous operation of the rubber sealing ring, the drive gear ring 20 is fixedly connected to a prism shaft 44, and a prism sleeve 45 is fixedly installed on the output shaft of the first servo motor 12. The prism shaft 44 and the prism sleeve 45 are slidably connected. The upper sliding frame 13 has a through hole 46 that matches the prism sleeve 45. When the upper pressure ring frame 8 is adjusted relative to the upper pressure adjustment frame 6, the relative position of the drive gear ring 20 can change with the upper pressure ring frame 8 through the relative sliding between the prism shaft 44 and the prism sleeve 45. This also ensures effective transmission between the first servo motor 12 and the drive gear ring 20. The upper sliding frame 13 has a center opening 47, which is coaxially set with the center hole 24. The upper sliding frame 13 has a side passage cavity 48, and a telescopic tube 49 is fixedly connected to the upper sliding frame 13. The telescopic tube 49 is connected to the quick-connect tube 15, and the side passage cavity 48 is connected to the telescopic tube 49.

[0026] A detection method for an online rubber sealing ring detection system includes the following steps: First, power is connected to the variable frequency motor 3, the first servo motor 12, the counter-rotation adjustment mechanism, and the auxiliary adjustment device. After wiring, the system should be run under no-load to ensure proper wiring. Then, a signal processing host is installed to support the pressure sensor 10 and the machine vision sensor 11. The signal processing host enables real-time reading and processing of signals from the pressure sensor 10 and the machine vision sensor 11. After installation, the signals from the pressure sensor 10 and the machine vision sensor 11 are calibrated to complete the pre-start preparations. Relevant detection parameters are set according to the specifications of the rubber sealing ring to be detected, the output frequency of the variable frequency motor 3 is adjusted, and the conveying speed of the conveyor belt 2 is determined. The movement patterns of the lower support rotating frame 5 and the upper pressure rotating frame 6 on the two movable mounting frames 4 are adjusted by the rotation adjustment mechanism to make the fitting clearance between the lower support block frame 7 and the upper pressure ring frame 8 match the size of the sealing ring to be tested. At the same time, the movement trajectory and alternation frequency of the two reciprocating moving carriers are set. After the setting is completed, the rubber sealing ring to be tested is placed at the starting end of the conveyor belt 2, and the variable frequency motor 3 is started. The variable frequency motor 3 drives the conveyor belt 2 to move, conveying the rubber sealing ring to be tested at a uniform speed. According to the position of the rubber sealing ring, the reciprocating moving carriers realize the alternating movement of the two movable mounting frames 4, so that the movable mounting frame 4 and the corresponding rubber sealing ring form a position following. When the movable mounting frame 4 moves to the side of the corresponding rubber sealing ring, the movement is accelerated. The lower support frame 5 is raised by the counter-rotating adjustment mechanism. During this process, the corresponding upper pressure frame 6 descends, causing the lower support block frame 7 to support the conveyor belt 2 on the lower side of the rubber seal ring. Meanwhile, the corresponding upper pressure ring frame 8 presses down on the rubber seal ring from top to bottom, achieving clamping and positioning of the rubber seal ring. Subsequently, gas is pumped into the upper pressure ring frame 8, increasing the pressure in the space enclosed by the rubber seal ring, the conveyor belt 2, and the upper pressure ring frame 8. During this process, the corresponding pressure sensor 10 simultaneously detects the pressure data inside the rubber seal ring, and the machine vision sensor 11 simultaneously captures an image of the surface of the rubber seal ring. The detected pressure data and image data are transmitted to the signal processing host in real time, and the signal processing host performs rapid data analysis. The comparison determines whether the rubber sealing ring has problems such as unqualified pressure bearing or surface defects, and records the test results. During the alternating clamping test, the two movable mounting frames 4 will alternately change position to test, so that the two movable mounting frames 4 can switch back and forth positions. This allows the two movable mounting frames 4 to follow the corresponding rubber sealing ring to complete the test operation. While maintaining the stable movement of the conveyor belt 2, the test efficiency is greatly improved. During the test, the first servo motor 12 drives the corresponding auxiliary adjustment device to operate, so as to correct the test position of the rubber sealing ring on the conveyor belt 2 and adjust the position of the rubber sealing ring on the conveyor belt 2 after the test. This ensures the test operation and also facilitates the lateral sorting operation after the test of unqualified rubber sealing rings.

[0027] In this embodiment, the variable frequency motor 3, machine vision sensor 11, first servo motor 12, second servo motor 34, and third servo motor 42 are all commercially available conventional devices known to those skilled in the art. In this invention, we are simply using them without making any improvements to their structure or function. Their setting methods, installation methods, and electrical connection methods can be easily explained by those skilled in the art by following the instructions for use. Therefore, we will not elaborate on them here.

[0028] In summary, the working principle of this online rubber seal detection system is as follows: Before the detection operation, the installation and debugging of the entire system must be completed. First, the variable frequency motor 3, the first servo motor 12, the second servo motor 34 in the counter-rotation adjustment mechanism, and the third servo motor 42 in the reciprocating moving carrier are powered on. After the wiring is completed, no-load operation is performed for no less than 10 minutes to ensure that the wiring of each component is normal and the operation is error-free. At the same time, the signal processing host is installed for the pressure sensor 10 and the machine vision sensor 11, and the signal transmission line is debugged. The signals of the pressure sensor 10 and the machine vision sensor 11 are calibrated. The pressure sensor 10 needs to be calibrated for pressure range, sensitivity, and zero-point offset, and the machine vision sensor 11 needs to be calibrated for shooting angle, clarity, and image recognition accuracy to ensure that the data collected by the sensors can truly and accurately reflect the actual situation of the rubber seal. The two pressure sensors 10 are symmetrically arranged front and back so that the two detection points of the same rubber seal can be spaced apart. A certain distance is maintained to ensure effective and reliable detection of the pressure within the rubber seal. The two machine vision sensors 11 are also symmetrically arranged, allowing them to alternately distribute the image acquisition area of ​​the rubber seal, thus providing full coverage of the detection range. After calibration, it is necessary to confirm that the signal processing host can read, parse, and store the data transmitted by the sensors in real time. The quick-connect pipe 15 is connected to external compressed air. In this solution, the working environment of the rubber seal is assumed to be a gas-pressurized environment. If the working environment of the rubber seal is a liquid-sealed environment, the quick-connect pipe 15 can be connected to external liquid. Water is usually chosen as the liquid medium. Since the round-headed drive rod 22 is not in contact with the conveyor belt 2 and there is no mutual pushing force, the inner chamfer 28 and the outer chamfer 30 are in contact with each other. Therefore, the compressed gas sent from the quick-connect pipe 15 will not enter the upper pressure ring 8. This completes all the pre-start preparations, ensuring that the system has the conditions for detection.

[0029] After preparation, based on the specific specifications of the rubber sealing ring to be tested, relevant detection parameters are set on the signal processing host. To facilitate the operation control of the first servo motor 12, the second servo motor 34, and the third servo motor 42, all of these servo motors can be connected to the signal processing host. The host then controls the operation of these motors. Next, considering the production and conveying efficiency requirements of the rubber sealing ring, the output frequency of the variable frequency motor 3 is adjusted to determine the uniform conveying speed of the conveyor belt 2. This speed setting must balance conveying efficiency and detection accuracy, avoiding excessive speed that could lead to inaccurate detection. To ensure the production schedule is not affected by excessive speed or slow operation, and to prevent belt misalignment or vibration during conveyor belt 2 operation, the upper threaded rod 14 and the lower threaded rod 17 are rotated respectively to adjust the relative positions of the upper sliding connecting frame 13 and the upper pressure adjustment frame 6, and the relative positions of the lower sliding connecting frame 16 and the lower support adjustment frame 5. This ensures that the fit clearance between the lower support block frame 7 and the upper pressure ring frame 8 precisely matches the size of the rubber sealing ring to be tested. This ensures that the rubber sealing ring is fixed during subsequent clamping and positioning without deformation due to excessive clamping force, which would affect the test results. After all parameters are set and confirmed to be correct, the testing operation is started, and the rubber sealing ring to be tested is placed... The rubber sealing rings placed on the conveyor belt 2 are positioned at the starting end of the conveyor belt 2, with the starting end selected as the front end of the conveyor belt 2. The top of the conveyor belt 2 moves from front to back accordingly. The rubber sealing rings are placed on the conveyor belt 2 intermittently, so that the rubber sealing rings can be continuously transported to the detection area by the conveyor belt 2. During the transport of the rubber sealing rings, the third servo motor 42 is started, driving the external gear 43 to rotate. The external gear 43 meshes with the matching external rack frame 38, driving the sliding sleeve 39 to slide along the track 37, thereby driving the two movable mounting frames 4 to move independently. During the movement, at least the following conditions are maintained: The upper rotating arm 32 and the lower rotating arm 33 on a mobile mounting frame 4 rotate relative to each other to avoid motion interference between the two upper rotating arms 32 and the two lower rotating arms 33. This allows the mobile mounting frame 4 to achieve synchronous position following with the corresponding rubber sealing ring. During the synchronous position following process, the machine vision sensor 11 detects the relative position with the corresponding rubber sealing ring in real time to determine whether the mobile mounting frame 4 and the corresponding rubber sealing ring have reached the synchronous following state. This ensures that the mobile mounting frame 4 can accurately track the conveying trajectory of the rubber sealing ring and minimizes the impact of the detection process on the normal conveying operation of the rubber sealing ring.

[0030] When the movable mounting frame 4 moves to the side of the corresponding rubber sealing ring, the second servo motor 34 starts, driving the upper counter-rotating arm 32 to rotate. The upper counter-rotating gear 35 in the upper counter-rotating arm 32 meshes with the lower counter-rotating gear 36 in the lower counter-rotating arm 33, driving the lower counter-rotating arm 33 to rotate synchronously in the opposite direction. This achieves relative rotation adjustment between the lower support rotating frame 5 and the upper pressure rotating frame 6. Based on the conveying speed of the conveyor belt 2 and the detection time of the rubber sealing ring, the motion trajectory and alternation frequency of the two reciprocating moving carriers are set to ensure that the two movable mounting frames 4 can alternately follow the rubber sealing ring on the conveyor belt 2 to achieve continuous detection. The relative rotation direction of the upper counter-rotating arm 32 and the lower counter-rotating arm 33 is controlled, driving the lower support rotating frame 5 upward. Rotating the corresponding upper pressure adjustment frame 6 downwards causes the lower support block frame 7 to move below the conveyor belt 2 on the lower side of the rubber sealing ring, providing stable support for the conveyor belt 2 and preventing deformation of the conveyor belt 2 due to pressure from affecting the detection accuracy. At the same time, the upper pressure ring frame 8 slowly presses against the rubber sealing ring from top to bottom, achieving precise clamping and positioning of the rubber sealing ring. During this process, the round-headed drive rod 22 has already contacted the conveyor belt 2 and driven the valve ring 27 to move, creating a gas passage gap between the inner chamfer 28 and the outer chamfer 30. Therefore, after the positioning of the clamped rubber sealing ring is completed, the compressed gas in the quick-connect pipe 15 will enter the upper pressure ring frame 8, the rubber sealing ring and the conveyor belt 2 through the telescopic pipe 49, the side passage cavity 48, the gap between the central hole 24 and the valve ring 27. Within the enclosed space formed by the pressure ring 8, the pressure gradually increases. During this process, two pressure sensors 10 inside the upper pressure ring 8 synchronously collect pressure data in real time, monitoring the sealing performance of the rubber sealing ring. If the rubber sealing ring has sealing defects such as damage or gaps, the pressure in the enclosed space will abnormally drop. The pressure sensors 10 will promptly capture this abnormal signal and transmit it to the signal processing host. Two machine vision sensors 11 operate synchronously, capturing surface images of the rubber sealing ring to detect surface defects such as scratches, dents, protrusions, impurities, or burrs. The captured image data is transmitted to the signal processing host in real time. The signal processing host processes the received pressure data and images... The system performs rapid comparison and analysis of data, comparing the collected data with preset qualified data thresholds and comparing image data with preset qualified sealing ring surface image templates to quickly determine whether the rubber sealing ring has a problem and automatically record the detection results. Since the two moving mounting frames 4 adopt an alternating detection mode, when one moving mounting frame 4 detects the current rubber sealing ring, the other moving mounting frame 4 will follow the next rubber sealing ring. During this process, the two moving mounting frames 4 will alternately change positions to achieve front and back position switching, and follow the corresponding rubber sealing ring to complete the detection operation. This can maintain the stable and continuous operation of the conveyor belt 2, greatly improve the detection efficiency, and avoid detection stagnation.

[0031] During the inspection process, since the two alternating inspection components are distributed on the left and right sides of the conveyor belt 2, the ideal inspection position for the rubber sealing ring is selected at the center of the left and right sides of the conveyor belt 2 to facilitate the operation of the two alternating inspection components. Therefore, if the rubber sealing ring to be inspected has a positional deviation on the conveyor belt 2, the first servo motor 12 drives the drive gear ring 20 to rotate. The rotation of the drive gear ring 20 drives the driven gear ring 19 meshing with it to rotate. The rotation of the driven gear ring 19 drives the turntable frame 18 to rotate. The rotation of the turntable frame 18 drives the lower extension mounting cylinder 21 and the round-headed drive rod 22 to rotate, so that the round-headed drive rod 22 moves along with the upper pressure ring frame. As the upper pressure ring 8 rotates and falls synchronously, the round-headed drive rod 22 eventually falls into the offset rubber sealing ring. When the round-headed drive rod 22 falls into the rubber sealing ring and is about to contact the conveyor belt 2, the first servo motor 12 moves again, controlling the round-headed drive rod 22 to rotate to the center position of the conveyor belt 2. Then, the round-headed drive rod 22 is controlled to form a relative motion with respect to the conveyor belt 2, ultimately achieving the centering adjustment of the rubber sealing ring relative to the conveyor belt 2. This ensures the precise alignment of the rubber sealing ring with the upper pressure ring frame 8, pressure sensor 10, and machine vision sensor 11, guaranteeing the accuracy of the detection data. The specific principle of this process is shown in the attached figure. Figure 15As shown, the straight arrow indicates the direction of movement of the round-headed drive rod 22 relative to the conveyor belt 2, while the curved arrow indicates the direction of rotation adjustment of the round-headed drive rod 22. After the rubber sealing ring completes the centering adjustment, the operating state of the third servo motor 42 is changed to control the round-headed drive rod 22 to move synchronously with the conveyor belt 2, so that the rubber sealing ring after position adjustment keeps moving synchronously with the conveyor belt 2. Then, the second servo motor 34 runs to control the upper rotating arm 32 and the lower rotating arm 33 to move closer to each other, so that the upper pressure ring frame 8 forms contact and pressure with the rubber sealing ring after position adjustment. The corresponding lower support block frame 7 supports the conveyor belt 2 below the rubber sealing ring, and continues to complete the rubber sealing ring inspection. After the inspection of a single rubber sealing ring is completed, the lower support rotating frame 5 is controlled to rotate downward and the upper pressure rotating frame 6 is controlled to rotate upward, releasing the clamping and positioning of the rubber sealing ring. After rod 22 separates from conveyor belt 2, the inner chamfer 28 and outer chamfer 30 re-contact, achieving a contact seal between valve ring 27 and center post 29, blocking the air path supplying air to the upward pressure ring frame 8. Based on the detection results recorded by the signal processing host, the position of the rubber sealing ring is adjusted by the auxiliary adjustment device. If the detection result is qualified, the auxiliary adjustment device does not make additional offset adjustment to the rubber sealing ring, and the rubber sealing ring continues to be conveyed with the conveyor belt 2 in a centered position. If the detection result is unqualified, the first servo motor 12 drives the round-head drive rod 22 to rotate, causing the unqualified rubber sealing ring to deviate from the centered position on the conveyor belt 2, so that unqualified products can be quickly identified and sorted in the subsequent sorting process, achieving effective differentiation between qualified and unqualified products, facilitating subsequent rework or scrapping. The principle of the round-head drive rod 22 causing the rubber sealing ring to deviate on the conveyor belt 2 is shown in the attached figure. Figure 16 As shown, during the process of pushing the defective rubber seal ring away from its original position, the round-headed drive rod 22 is controlled to form a differential speed with respect to the conveyor belt 2. The direction of the straight arrow in the figure is the direction of the differential speed movement of the round-headed drive rod 22 relative to the conveyor belt 2, and the direction of the curved arrow is the direction of the rotation adjustment of the round-headed drive rod 22. By changing the pulling position of the round-headed drive rod 22 on the rubber seal ring, the deviation of the rubber seal ring from the conveyor belt 2 is achieved.

[0032] Considering the flat, annular structure of the rubber seal ring, it will lie flat on the conveyor belt 2 and will not stand upright. Furthermore, considering the conveyor belt 2's transport function, it can be determined that the tested rubber seal ring will only have a lateral positional deviation; the longitudinal positional deviation will be offset by the movement of the conveyor belt 2. The test only requires the rubber seal ring to be fully compressed between the lower support block 7 and the upper pressure ring 8; it does not need to be completely concentric with them. To ensure the reliability of the test data, taking a rubber seal ring with a cross-sectional diameter between 5mm and 20mm as an example, after the upper pressure ring 8 is pressed down, the compression rate of the rubber seal ring should be controlled to 10% to 15%. This compression rate ensures a tight seal between the upper pressure ring 8 and the rubber seal ring, preventing gas or liquid leakage during pressure testing, while also avoiding permanent deformation of the rubber seal ring due to excessive compression, which would affect its performance. Therefore, to meet the requirements of the rubber sealing ring's expansion after compression and the centering adjustment error of the round-headed drive rod 22, the outer ring diameter of the upper pressure ring frame 8 needs to be 10mm to 12mm larger than the outer diameter of the rubber sealing ring to be tested, and the inner ring diameter of the upper pressure ring frame 8 needs to be 8mm to 10mm smaller than the inner diameter of the rubber sealing ring to be tested. This ensures that when the upper pressure ring frame 8 and the rubber sealing ring are pressed together, they form a double sealing band, which together form a stable and sealed detection cavity, ensuring the accuracy and reliability of inflation detection and visual detection. For the selection of the size of the lower support block frame 7, it is generally adopted to have the same specification as the outer diameter of the upper pressure ring frame 8. The machine vision sensor 11 and the signal processing host will pre-calculate the motion trajectory and rotation drive angle of the round-headed drive rod 22 based on the position of the target rubber sealing ring. Subsequently, it is only necessary to control the round-headed drive rod 22 to fall into the inner ring of the rubber sealing ring, and drive the rubber sealing ring to adjust its position through rotation and differential motion. That is, the adjustment of the rubber sealing ring by the round-headed drive rod 22 is feasible, and the corresponding time will not affect the entire detection operation of the rubber sealing ring.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An online testing system for rubber sealing rings, comprising a support frame (1), characterized in that, It also includes an alternating detection component. A conveyor belt (2) is installed on the support frame (1). The outer ring surface of the conveyor belt (2) is a smooth surface. A variable frequency motor (3) is installed outside the support frame (1). The variable frequency motor (3) is used to drive the movement of the conveyor belt (2). Two reciprocating moving carriers are installed on the support frame (1). The alternating detection component includes two movable mounting frames (4). The two movable mounting frames (4) are respectively installed on the two reciprocating moving carriers. Each of the two movable mounting frames (4) is equipped with a counter-rotation adjustment mechanism. Each of the two counter-rotation adjustment mechanisms is equipped with a lower support rotator (5) and an upper pressure rotator (6). The two lower supports Each of the two adjustment frames (5) is provided with a lower support block frame (7), and each of the two upper pressure adjustment frames (6) is provided with an upper pressure ring frame (8). The two lower support block frames (7) are respectively matched with the two upper pressure ring frames (8). The upper pressure ring frame (8) is provided with two internally connected mounting cavities (9). Each of the two internally connected mounting cavities (9) is equipped with a pressure sensor (10) and a machine vision sensor (11). Each of the two upper pressure ring frames (8) is equipped with an auxiliary adjustment device. Each of the two upper pressure adjustment frames (6) is equipped with a first servo motor (12). The two first servo motors (12) provide operating power for the two auxiliary adjustment devices respectively.

2. The online detection system for rubber sealing rings according to claim 1, characterized in that, An upper sliding frame (13) is fixedly connected to the upper pressure ring frame (8). The upper sliding frame (13) is threadedly connected to an upper threaded rod (14). The upper threaded rod (14) is rotatably connected to the upper pressure adjustment frame (6). The upper sliding frame (13) is slidably connected to the upper pressure adjustment frame (6). A quick-connect pipe (15) is installed on the upper sliding frame (13). The quick-connect pipe (15) is fixedly connected to the upper pressure adjustment frame (6). A lower sliding frame (16) is fixedly connected to the bottom end of the lower support block frame (7). The lower sliding frame (16) is threadedly connected to a lower threaded rod (17). The lower threaded rod (17) is rotatably connected to the lower support adjustment frame (5). The lower sliding frame (16) is slidably engaged with the lower support adjustment frame (5).

3. The online detection system for rubber sealing rings according to claim 2, characterized in that, The auxiliary positioning device includes a turntable frame (18), which is rotatably connected between an upper pressure ring frame (8) and an upper sliding frame (13) that are fixedly connected to each other. A driven gear ring (19) is fixedly connected to the outside of the turntable frame (18). A drive gear ring (20) is installed on the output shaft of the first servo motor (12). The drive gear ring (20) meshes with the driven gear ring (19). A lower extension mounting cylinder (21) is fixedly connected to the bottom end of the turntable frame (18). A round-headed drive rod (22) is provided inside the lower extension mounting cylinder (21). A conical spring (23) is fixedly connected to the round-headed drive rod (22). The conical spring (23) is fixedly connected inside the lower extension mounting cylinder (21).

4. The online detection system for rubber sealing rings according to claim 3, characterized in that, The top of the turntable frame (18) is provided with a central hole (24) and a connecting groove (25). One end of the connecting groove (25) is connected to the central hole (24), and the other end of the connecting groove (25) is connected to the lower extension mounting cylinder (21). The top of the round-headed drive rod (22) is fixedly connected to a bridge plate (26). The bridge plate (26) is located in the connecting groove (25). The end of the bridge plate (26) away from the round-headed drive rod (22) is fixedly connected to a valve ring (27). The bottom end of the valve ring (27) is provided with an inner chamfer (28). A central column (29) is provided in the central hole (24). The top of the central column (29) is provided with an outer chamfer (30) that matches the inner chamfer (28). Three support plates (31) are fixedly connected to the outside of the central column (29). The three support plates (31) are fixedly connected in the central hole (24).

5. The online detection system for rubber sealing rings according to claim 4, characterized in that, Both of the aforementioned counter-rotation adjustment mechanisms include an upper counter-rotation arm (32), a lower counter-rotation arm (33), and a second servo motor (34). The two upper counter-rotation arms (32) are rotatably connected to the two aforementioned movable mounting frames (4), and the two lower counter-rotation arms (33) are rotatably connected to the two aforementioned movable mounting frames (4). The two second servo motors (34) are respectively installed outside the two aforementioned movable mounting frames (4). The two second servo motors (34) are respectively used for the rotation drive of the two upper counter-rotation adjustment frames (6). An upper counter-rotation gear (35) is installed inside each of the two upper counter-rotation arms (32). The two upper counter-rotation gears (35) are meshed and connected to a lower counter-rotation gear (36). The two lower counter-rotation gears (36) are respectively fixedly connected to the two aforementioned lower counter-rotation arms (33).

6. The online detection system for rubber sealing rings according to claim 5, characterized in that, Both reciprocating moving carriers include a track bar (37) and an external rack frame (38). Both track bars (37) are fixedly connected inside the support frame (1). The two external rack frames (38) are fixedly connected to the left and right sides of the support frame (1). Both track bars (37) are provided with sliding sleeves (39). Both sliding sleeves (39) are matched with pressing frames (40). The two pressing frames (40) are fixedly connected to the two movable mounting frames (4). Both movable mounting frames (4) are provided with pressing grooves (41). The two pressing grooves (41) are matched with the two sliding sleeves (39). Both pressing frames (40) are equipped with third servo motors (42). Both third servo motors (42) are equipped with external gears (43) on their output shafts. The two external gears (43) mesh with the two external rack frames (38).

7. The online detection system for rubber sealing rings according to claim 6, characterized in that, The drive gear ring (20) is fixedly connected to the prism shaft (44), and the output shaft of the first servo motor (12) is fixedly installed with the prism sleeve (45). The prism shaft (44) and the prism sleeve (45) are slidably connected. The upper sliding frame (13) is provided with a through hole (46) that matches the prism sleeve (45).

8. The online detection system for rubber sealing rings according to claim 7, characterized in that, The upper sliding frame (13) has a central opening (47), which is coaxially arranged with the central hole (24). The upper sliding frame (13) has a side passage cavity (48), and a telescopic tube (49) is fixedly connected to the upper sliding frame (13). The telescopic tube (49) is connected to the quick-connect pipe (15), and the side passage cavity (48) is connected to the telescopic tube (49).

9. The online detection system for rubber sealing rings according to claim 8, characterized in that, The support frame (1) is rotatably connected to a drive roller (50) and a driven roller (51). The output shaft of the variable frequency motor (3) is connected to the drive roller (50) for transmission. The drive roller (50) and the driven roller (51) are both connected to the conveyor belt (2) for transmission. The drive roller (50) and the driven roller (51) are both provided with a left limiting ring (52) and a right limiting ring (53) that match the conveyor belt (2).

10. A detection method for an online detection system for rubber sealing rings, characterized in that, The online testing system for rubber seals according to any one of claims 1-9 includes the following steps: S1. First, power on the variable frequency motor (3), the first servo motor (12), the counter-rotation adjustment mechanism and the auxiliary adjustment device. After the wiring is completed, it should be run under no-load to ensure that the wiring is normal. Then, install the signal processing host for the pressure sensor (10) and the machine vision sensor (11). Real-time reading and processing of the signals of the pressure sensor (10) and the machine vision sensor (11) are realized through the signal processing host. After the installation is completed, the signals of the pressure sensor (10) and the machine vision sensor (11) are calibrated to complete the preparation work before starting the machine. S2. Set relevant testing parameters according to the specifications of the rubber sealing ring to be tested, adjust the output frequency of the variable frequency motor (3), determine the conveying speed of the conveyor belt (2), adjust the movement mode of the lower support rotating frame (5) and the upper pressure rotating frame (6) on the two movable mounting frames (4) through the counter-rotation adjustment mechanism, so that the fit gap between the lower support block frame (7) and the upper pressure ring frame (8) is adapted to the size of the sealing ring to be tested, and set the movement trajectory and alternation frequency of the two reciprocating moving carriers at the same time. S3. After setting, place the rubber sealing ring to be tested at the starting end of the conveyor belt (2), start the variable frequency motor (3), the variable frequency motor (3) drives the conveyor belt (2) to move, and convey the rubber sealing ring to be tested at a constant speed. According to the position of the rubber sealing ring, the reciprocating carrier runs to realize the alternating movement of the two moving mounting frames (4), so that the moving mounting frame (4) and the corresponding rubber sealing ring form a position follow. When the moving mounting frame (4) moves to the side of the corresponding rubber sealing ring, the lower support rotating frame (5) is driven to rise through the counter-rotation adjustment mechanism. During this process, the corresponding upper pressure rotating frame (6) descends, so that the lower support block frame (7) supports the conveyor belt (2) on the lower side of the rubber sealing ring, while the corresponding upper pressure ring frame (8) presses the rubber sealing ring from top to bottom to achieve the clamping and positioning of the rubber sealing ring. S4. Then, gas is pumped into the upper pressure ring frame (8) to increase the pressure in the space enclosed by the rubber sealing ring, the conveyor belt (2) and the upper pressure ring frame (8). During this process, the corresponding pressure sensor (10) simultaneously detects the pressure data in the rubber sealing ring, and the machine vision sensor (11) simultaneously captures the surface image of the rubber sealing ring. The detected pressure data and image data are transmitted to the signal processing host in real time. The signal processing host performs rapid analysis and comparison of the data to determine whether the rubber sealing ring has problems such as unqualified pressure bearing and surface defects, and records the detection results. S5. During the alternating clamping and testing process, the two movable mounting frames (4) will alternately change position for testing, so that the two movable mounting frames (4) can switch back and forth positions, and the two movable mounting frames (4) will follow the corresponding rubber sealing ring to complete the testing operation. While maintaining the stable movement of the conveyor belt (2), the testing efficiency is greatly improved. During the testing process, the first servo motor (12) drives the corresponding auxiliary adjustment device to operate, so as to correct the testing position of the rubber sealing ring to be tested on the conveyor belt (2) and adjust the position of the rubber sealing ring on the conveyor belt (2) after testing, so as to ensure the testing operation and facilitate the lateral sorting operation after the testing of unqualified rubber sealing rings.

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