A cavity size detection device and method for a toroidal isolator

Abstract

The present application relates to cavity size detection technical field, especially to a kind of cavity size detection device and method of annular isolator, including hollow body, the support platform is fixedly connected in the body lateral wall, the inner lateral wall of the body is rotatably connected with the shaft by bearing.The body lateral wall is provided with detection mechanism, the detection mechanism is by main inspection component and light component, the main inspection component includes L-shaped guide block, the guide block is fixedly connected with body lateral wall, the guide block is slidably connected with enclosed disc and lower pressing disc, the inner top wall of the body is fixedly connected with electric push rod, the output end of the electric push rod is fixedly connected with lifting block, the light component includes groove, the groove is opened in guide block, the inner lateral wall of the groove is fixedly connected with three conductive strips;The body is provided with conveying mechanism.The advantage is that: the device detection result of the present application is more accurate, and the degree of automation is higher, and detection efficiency is higher.

Description

Technical Field

[0001] This invention relates to the field of cavity size detection technology, and in particular to a cavity size detection device and method for annular isolators. Background Technology

[0002] A ring isolator, also known as a signal isolator, is a device that uses the principle of linear optocoupler isolation to convert input signals into outputs, isolating the input, output, and power supply from each other. It is particularly suitable for use with equipment and instruments that require electrical isolation and is an important component of industrial control systems. Ring isolators typically have an internal cavity that provides a stable mounting space for various internal components, such as magnetic rings and dielectric sheets. This ensures that these components remain in the correct position, preventing displacement or damage due to external forces, collisions, vibrations, etc., thus guaranteeing the stability and reliability of the ring isolator's performance. Therefore, during the production process, there are certain requirements for the size and quality of the cavity. After the ring isolator is manufactured, the dimensions of its cavity must be inspected one by one.

[0003] In existing technologies, when testing, the product needs to be placed and removed manually, and its position needs to be aligned during placement, which greatly reduces the testing efficiency. In addition, existing testing methods generally use a three-dimensional lens to scan the cavity once to calculate the cavity size, and the test results may be inaccurate. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art by proposing a device and method for detecting the cavity size of an annular isolator.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A cavity size detection device for an annular isolator includes a hollow body, a support platform fixedly connected to the side wall of the body, and a rotating shaft rotatably connected to the inner side wall of the body via a bearing;

[0007] The machine body sidewall is provided with a detection mechanism, which consists of a main inspection component and a lighting component. The main inspection component includes an L-shaped guide block and a screw. The guide block is fixedly connected to the machine body sidewall. A closed disc and a lower pressure disc are slidably connected through the guide block. The screw and the closed disc are rotatably connected through a bearing. The lower pressure disc is threadedly connected to the screw. A mounting post is fixedly connected to the lower surface of the screw. A laser rangefinder and a detection probe are fixedly connected to the sidewall of the mounting post. An electric push rod is fixedly connected to the top wall of the machine body. A lifting block is fixedly connected to the output end of the electric push rod. The lighting component includes a groove, which is opened in the guide block. Three conductive strips are fixedly connected to the inner sidewall of the groove.

[0008] The machine body is provided with a conveying mechanism, which includes two rotating rods. The rotating rods are rotatably connected to the side wall of the machine body through bearings.

[0009] The machine body is provided with a position correction mechanism, which consists of a drive component and a push component. The drive component includes a liquid tank, which is fixedly connected to the inner side wall of the machine body and is filled with hydraulic oil. The push component includes a hollow intermediate block, which is fixedly connected to the machine body and the support platform.

[0010] Furthermore, the side wall of the machine body is provided with a sliding hole, the lower pressure plate is slidably connected to the side wall of the machine body through the sliding hole, and the lower pressure plate is fixedly connected to the side wall of the lifting block.

[0011] Furthermore, the lighting assembly also includes multiple sets of LED beads, which are fixedly connected to the lower surface of the enclosed disk. Each set of LED beads consists of three LED beads. Multiple lamp covers are fixedly connected to the lower surface of the enclosed disk. A conductive block is fixedly connected to the inner side wall of the pressure plate. The conductive block is slidably connected in the groove. The conductive block, conductive strip, and LED beads are electrically connected through wires.

[0012] Furthermore, the conveying mechanism also includes a first pulley, which is rotatably connected to the rotating shaft via a one-way bearing. The rotating shaft is fixedly connected to a gear, and a rack is fixedly connected to the side wall of the lifting block. The rack meshes with the gear. One end of the rotating rod located inside the machine body is fixedly connected to a second pulley. The first pulley and the second pulley cooperate with a synchronous belt. The end of the rotating rod located outside the machine body is fixedly connected to a rotating roller. The two rotating rollers are tensioned together to form a conveyor belt. The surface of the conveyor belt is coated with marking lines.

[0013] Furthermore, the drive assembly also includes a piston, which is slidably and sealed within the liquid tank. The rotating shaft is rotatably connected to a turntable via a one-way bearing. An active column is fixedly connected to the side wall of the turntable. A driven column is fixedly connected to the piston. The driven column and the active column are rotatably connected through a connecting rod. The liquid tank and the intermediate block are fixedly connected by a first pipe, which connects the liquid tank and the intermediate block.

[0014] Furthermore, the pushing assembly also includes two sliding sleeves, one of which is fixedly connected to the upper surface of the machine body, and the other is fixedly connected to the upper surface of the support platform. The sliding sleeves are slidably connected with sliding columns. The sliding sleeves, machine body, support platform, and intermediate block are all connected by two second pipes. The second pipes connect the corresponding sliding sleeves to the intermediate blocks. The intermediate blocks and sliding sleeves are filled with hydraulic oil, and the second pipes are equipped with pressure relief valves.

[0015] Furthermore, push blocks are fixedly connected to the sidewalls of the two sliding columns on opposite sides, and the push blocks are made of rubber.

[0016] Furthermore, the guide block, the lower pressure plate, and the sealing plate are all made of polytetrafluoroethylene, and a damping washer is provided at the rotational connection between the screw and the sealing plate.

[0017] Furthermore, the side wall of the machine body is provided with multiple inspection ports, and the inspection ports are connected to inspection doors by hinges.

[0018] The present invention also provides a method for detecting the cavity size of an annular isolator, comprising the following steps:

[0019] S1. Placement: Place the items to be inspected in an orderly manner on the conveyor belt according to the marking lines on the conveyor belt;

[0020] S2. Position Correction: When the sample to be tested is waiting to be delivered to the bottom of the testing institution, the position correction mechanism will correct the position of the sample to be tested so that it is delivered directly to the bottom of the testing institution;

[0021] S3. Inspection: After the inspection item is sent directly below the inspection agency, the main inspection component and the lighting component use different colored lights to illuminate the dark cavity. Then, the laser range sensor and the inspection probe perform multiple inspections on the cavity size and defects of the inspection item based on the laser principle. The inspection probe uses the laser scanning principle and repeats the inspection and scanning under multiple supplementary lights.

[0022] S4. Comparative Analysis: Compare and analyze the results of multiple tests, and based on the results of the comparative analysis, obtain accurate values ​​and find out if there are any defects in the cavity.

[0023] S5. Conveying: The inspected products continue to be conveyed forward along the conveyor belt to the next process.

[0024] The present invention has the following advantages:

[0025] 1. During the testing process, the cavity is sealed by a sealing plate, and then light is provided by the light assembly for supplementary lighting. Compared with testing directly through the probe, this avoids interference from complex external light and greatly improves the accuracy of testing.

[0026] 2. During the dimensional inspection process, the inspection probe will also detect defects inside the cavity. While inspecting the dimensions, internal defects are detected simultaneously, which greatly improves the inspection efficiency.

[0027] 3. Because the cavity is sealed by a closed disk, the inside is in a dark state. By using supplemental lighting for detection, the echo signal of weakly reflective targets is enhanced, thereby improving the detection efficiency to a certain extent.

[0028] 4. During the testing process, the lower pressure plate moves downward, causing the screw to rotate through the threaded connection, which in turn drives the mounting column to rotate. This causes the laser range sensor and the detection probe to rotate, performing laser scanning and detection inside the cavity. At the same time, different colors of light are used to supplement the illumination, enhancing the details of the metal surface. Multiple scans are performed under different colors of supplementary light, and then the results are compared and analyzed to obtain the detection results, further improving the accuracy of the detection.

[0029] 5. After a product is inspected, the electric push rod resets and drives the lifting block to rise. Through the meshing of the rack and gear, the first pulley rotates, and then through the transmission of the synchronous belt, the conveyor belt moves, sending the inspected product away from the inspection mechanism and sending the next product to be inspected to the inspection mechanism. This completes the automatic loading and unloading of products without the need for manual loading and unloading, further improving inspection efficiency.

[0030] 6. During the inspection of the previous product, the lifting block descends, and through the meshing of the rack and gear, it drives the rotating shaft to rotate. Then, through the connecting rod, the piston completes one cycle of reciprocating motion, which in turn causes the sliding column to drive the push block to complete one cycle of reciprocating motion. This corrects the position of the next product to be inspected, so that when it is sent to the inspection mechanism, it can be located directly below it. On the one hand, it saves manual alignment and improves efficiency, and on the other hand, it greatly improves the degree of automation.

[0031] 7. The device of the present invention only requires placing the product according to the marking line to complete the subsequent product loading and unloading, position correction and detection. No manual operation is required throughout the process, and the device has a higher degree of automation. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the external appearance of a cavity size detection device for an annular isolator proposed in this invention;

[0033] Figure 2 This is a schematic diagram of the cavity size detection device for an annular isolator proposed in this invention from another perspective.

[0034] Figure 3 This is a schematic diagram of the internal structure of a cavity size detection device for an annular isolator proposed in this invention, taken from a longitudinal section.

[0035] Figure 4 for Figure 3 Enlarged view of point A in the image;

[0036] Figure 5 This is a schematic diagram of the internal structure of the sealing disk and the lower pressure disk in the cavity size detection device of the annular isolator proposed in this invention;

[0037] Figure 6 for Figure 5 Enlarged view of point B in the image;

[0038] Figure 7 This is a schematic diagram of the internal structure of the body of the cavity size detection device for an annular isolator proposed in this invention;

[0039] Figure 8 for Figure 7 Enlarged view of point C in the image;

[0040] Figure 9 This is a schematic diagram of the internal structure of the intermediate shell and sliding sleeve in a cavity size detection device for an annular isolator proposed in this invention;

[0041] Figure 10 This is a partial structural diagram of the guide block in a cavity size detection device for an annular isolator proposed in this invention.

[0042] In the diagram: 1. Body, 2. Guide block, 3. Enclosed disc, 4. Lower pressure plate, 5. Sliding hole, 6. Electric push rod, 7. Lifting block, 8. Screw, 9. Mounting column, 10. Laser rangefinder sensor, 11. Detection probe, 12. Lamp bead, 13. Lamp cover, 14. Groove, 15. Conductive strip, 16. Conductive block, 17. Rotating rod, 18. Rotating roller, 19. Conveyor belt, 20. Support platform, 21. Rack, 22. Rotating shaft, 23. Gear, 24. First pulley, 241. Second pulley, 25. Synchronous belt, 26. Turntable, 27. Liquid tank, 28. Piston, 29. Driven column, 30. Driving column, 31. Connecting rod, 32. Intermediate block, 321. First pipe, 33. Sliding sleeve, 34. Sliding column, 35. Push block, 36. Second pipe, 37. Pressure relief valve, 38. Inspection port, 39. Inspection door. Detailed Implementation

[0043] 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.

[0044] Example

[0045] Reference Figure 1-10 A cavity size detection device for an annular isolator includes a hollow body 1, a support platform 20 fixedly connected to the side wall of the body 1, and a rotating shaft 22 rotatably connected to the inner side wall of the body 1 via a bearing.

[0046] A detection mechanism is provided on the side wall of the machine body 1. The detection mechanism consists of a main inspection component and a lighting component. The main inspection component includes an L-shaped guide block 2, which is fixedly connected to the side wall of the machine body 1. A sealing disc 3 and a pressure disc 4 are slidably connected through the guide block 2. The side wall of the machine body 1 is provided with protrusions (such as...). Figure 4As shown), the closed disk 3 is limited so that its rise has a certain limit. An electric push rod 6 is fixedly connected to the top wall of the body 1. A lifting block 7 is fixedly connected to the output end of the electric push rod 6. The lighting assembly includes a groove 14. The groove 14 is opened in the guide block 2. Three conductive strips 15 are fixedly connected to the inner side wall of the groove 14.

[0047] A conveying mechanism is provided at the machine body 1. The conveying mechanism includes two rotating rods 17, which are rotatably connected to the side wall of the machine body 1 through bearings.

[0048] A position correction mechanism is provided at the body 1. The position correction mechanism consists of a drive component and a push component. The drive component includes a liquid tank 27, which is fixedly connected to the inner side wall of the body 1. The liquid tank 27 is filled with hydraulic oil. The push component includes a hollow intermediate block 32, which is fixedly connected to the body 1 and the support platform 20.

[0049] The main inspection component also includes a screw 8, which is rotatably connected to the closed disc 3 via a bearing. A lower pressure plate 4 is threadedly connected to the screw 8. The thread helix angle of the screw 8 is greater than the equivalent friction angle of the helical pair formed by the screw 8 and the lower pressure plate 4, thus preventing the thread from self-locking. This means that the movement of the lower pressure plate 4 can drive the screw 8 to rotate via the threaded connection. A mounting post 9 is fixedly connected to the lower surface of the screw 8. A laser rangefinder 10 and a detection probe 11 are fixedly connected to the side wall of the mounting post 9. The laser rangefinder 10 can emit laser light to detect the internal dimensions of the cavity, while the detection probe 11 can... To detect defects (pits or protrusions, etc.) in the internal cavity, the LED 12 and two probes are both existing micro-probes, which can be adapted to the internal dimensions of conventional annular isolators. Both probes are connected to a computer, allowing for comparative analysis of multiple scan results. Computer comparison technology is existing and will not be elaborated upon here. A sliding hole 5 is provided on the side wall of the machine body 1, through which the lower pressure plate 4 is slidably connected to the side wall of the machine body 1. The lower pressure plate 4 is fixedly connected to the side wall of the lifting block 7. The electric push rod 6 drives the lifting block 7 to descend, which in turn causes the lower pressure plate 4 to move downwards. The pressure plate 4 then drives the sealing plate 3 downwards until it contacts the product and seals the cavity. The pressure plate 4 continues to descend, causing the screw 8 to rotate via its threaded connection. This rotation of the screw 8 drives the mounting post 9, which in turn rotates the laser rangefinder sensor 10 and the detection probe 11, scanning the interior of the cavity. Simultaneously, the conductive block 16 contacts the conductive strip 15, causing the LED bead 12 to emit light. The detection probe 11 uses the light emitted by the LED bead 12 to scan and detect the interior of the cavity. Because the cavity is sealed by the sealing plate 3, the internal... In the dark, the detection method uses supplemental lighting to enhance the echo signal of weakly reflective targets, thereby improving the detection efficiency to a certain extent. During the pressing process of the lowering plate 4, the mounting column 9 will rotate three times, so that the laser range sensor 10 and the detection probe 11 will perform three scans of the cavity. The results of the three scans are transmitted to the computer, which compares and analyzes the three scan results to obtain the final accurate data. The detection method of multiple scans and comparisons makes the detection data more accurate than the method of obtaining the result by performing only one scan.

[0050] The lighting assembly also includes multiple sets of LED beads 12, which are fixedly connected to the lower surface of the enclosed disk 3. Each set of LED beads 12 has three beads, and the three LED beads 12 emit light in the three primary colors of red, green, and blue respectively when powered on. The combination of the three colors produces white light. Multiple lamp covers 13 are fixedly connected to the lower surface of the enclosed disk 3, and the three LED beads 12 in each set are located in the same lamp cover 13 (e.g., ...). Figure 6As shown), a conductive block 16 is fixedly connected to the inner wall of the lower pressure plate 4. The conductive block 16 is slidably connected in the groove 14. The conductive block 16, conductive strip 15, and LED bead 12 are electrically connected through wires. Each conductive strip 15 is connected to one of the LED beads in each group, and then connected to the negative terminal of the power supply. The conductive block 16 is connected to the positive terminal of the power supply. When the conductive block 16 contacts the conductive strip 15, the corresponding LED bead 12 will light up. The three conductive strips 15 have different lengths (e.g., ...). Figure 10 As shown in the diagram, when the conductive block 16 moves downwards, it first contacts three conductive strips 15, then only two conductive strips 15, and finally only one conductive strip 15. When it separates from one of the conductive strips 15, the mounting post 9 rotates exactly one revolution. Thus, during the detection process, when the mounting post 9 rotates for the first revolution, all three LED beads 12 light up and emit white light. In the second revolution, only green and blue light are combined to produce cyan light. In the third revolution, only blue light is emitted. This allows the detection to be performed under three different colors of light during the three revolutions. Since the details of the metal surface are displayed differently under different wavelengths of supplementary light, using three different wavelengths of light for supplementary light can yield three different sets of data. By comparing and analyzing the different detection data, more accurate detection data can be obtained.

[0051] The conveying mechanism also includes a first pulley 24, which is rotatably connected to the rotating shaft 22 via a one-way bearing. The one-way bearing ensures that the first pulley 24 only rotates when the rotating shaft 22 rotates counterclockwise. That is, after the inspection is completed and the lifting block 7 rises, the first pulley 24 rotates, causing the conveyor belt 19 to move. A gear 23 is fixedly connected to the rotating shaft 22, and a rack 21 is fixedly connected to the side wall of the lifting block 7. The rack 21 meshes with the gear 23, and the number of teeth on the rack 21 is the same as the number of teeth on the gear 23. This allows the rack 21 to drive the gear 23 to rotate one revolution when it moves. It should be noted that when the lifting block 7 moves downward to its limit position, the rack 21 and gear 23 are disengaged, thus ensuring that the lifting block 7 can resume operation after the inspection is completed. When positioned, the conveyor belt 19 will only begin conveying the product after the mounting post 9 has left the product cavity, thus avoiding interference from the mounting post 9 in the product conveying process. One end of the rotating rod 17, located inside the machine body 1, is fixedly connected to a second pulley 241. The first pulley 24 and the second pulley 241 cooperate with a synchronous belt 25. Both the first pulley 24 and the second pulley 241 are toothed, and the inner wall of the synchronous belt 25 is also toothed, ensuring a meshing transmission between the first pulley 24, the second pulley 241, and the synchronous belt 25, guaranteeing smooth transmission and accurate conveying position. The end of the rotating rod 17, located outside the machine body 1, is fixedly connected to a rotating roller 18. The two rotating rollers 18 are tensioned together with the conveyor belt 19. The surface of the conveyor belt 19 is coated with marking lines (such as...). Figure 1As shown in the diagram, products are placed along the marking lines to ensure they are arranged in an orderly manner and their positions are consistent. After one product is inspected, the electric push rod 6 drives the lifting block 7 to rise and reset. At this time, the rack 21 drives the gear 23 to rotate counterclockwise, which in turn causes the rotating shaft 22 to rotate counterclockwise. With the one-way bearing, the rotating shaft 22 drives the first pulley 24 to rotate, but does not drive the turntable 26 to rotate. The rotation of the first pulley 24 will drive the second pulley 241 to rotate through the synchronous belt 25, which in turn causes the rotating rod 17 to rotate, which in turn causes the rotating roller 18 to rotate. The rotating roller 18 drives the conveyor belt 19 to move, sending the inspected product away from the inspection mechanism and sending the next product to be inspected to the bottom of the inspection mechanism, thus completing the automatic loading and unloading and greatly improving the inspection efficiency.

[0052] The drive assembly also includes a piston 28, which is slidably and sealed within the liquid tank 27. A rotating shaft 22 is rotatably connected to a turntable 26 via a one-way bearing. The one-way bearing ensures that the rotating shaft 22 can only rotate clockwise to drive the turntable 26 to rotate, meaning that the position of the next product to be inspected will only be corrected when the previous product is being inspected. An active column 30 is fixedly connected to the side wall of the turntable 26, and a driven column 29 is fixedly connected to the piston 28. The driven column 29 and the active column 30 are rotatably connected to a connecting rod 31. Both the driven column 29 and the active column 30 are rotatably connected to the connecting rod 31 via bearings. A first pipe 321 is fixedly connected to the liquid tank 27 and the intermediate block 32, connecting the liquid tank 27 and the intermediate block 32.

[0053] The pushing assembly also includes two sliding sleeves 33. One sliding sleeve 33 is fixedly connected to the upper surface of the machine body 1, and the other sliding sleeve 33 is fixedly connected to the upper surface of the support platform 20. Each sliding sleeve 33 is slidably connected to a sliding column 34. The sliding sleeves 33, machine body 1, support platform 20, and intermediate block 32 are all connected by two second pipes 36. The second pipes 36 connect the corresponding sliding sleeves 33 to the intermediate block 32. Both the intermediate block 32 and the sliding sleeves 33 are filled with hydraulic oil. A pressure relief valve 37 is installed in the second pipe 36. The pressure relief valve 37 opens when the pressure reaches a certain value. The opening pressure of the pressure relief valve 37 is relatively small. The main purpose of the pressure relief valve 37 is to ensure that the hydraulic oil enters and exits the two sliding sleeves 33 synchronously, thereby ensuring the synchronous movement of the two sliding columns 34, and thus ensuring that the corrected product is located in the middle position of the conveyor belt 19. The lifting block 7 descends. During the inspection process, the meshing of rack 21 and gear 23 causes gear 23 to drive shaft 22 to rotate clockwise. Due to the one-way bearing, shaft 22 drives turntable 26 to rotate one revolution, while the first pulley 24 does not rotate. During one revolution of turntable 26, connecting rod 31 drives piston 28 to complete one cycle of reciprocating motion. Piston 28, in turn, uses hydraulic oil to cause sliding column 34 in sliding sleeve 33 to complete one cycle of reciprocating motion. This causes the two sliding columns 34 to drive push block 35 to move synchronously towards each other and then away from each other. During the moving towards each other, the position of the next product to be inspected is corrected so that it is in the middle of conveyor belt 19. While conveying, the product position is automatically corrected to ensure that the products delivered to the inspection mechanism are all directly below, thus improving the accuracy of the inspection.

[0054] Push blocks 35 are fixedly connected to the side walls of the two sliding columns 34 on opposite sides. The push blocks 35 are made of rubber.

[0055] Guide block 2, pressure plate 4, and sealing plate 3 are all made of polytetrafluoroethylene (PTFE). PTFE not only has good insulation properties to prevent accidental circuit continuity, but also has higher strength and corrosion resistance, resulting in a longer service life. A damping washer is provided at the rotating connection between screw 8 and sealing plate 3. The damping washer creates a certain rotational friction between screw 8 and sealing plate 3, ensuring that screw 8 only rotates after sealing plate 3 comes into contact with the product to be tested, at which point pressure plate 4 moves downward. This prevents screw 8 from starting to rotate before sealing plate 3 comes into contact with the product.

[0056] Multiple inspection ports 38 are provided on the side wall of the body 1. Inspection doors 39 are connected to the inspection ports 38 by hinges. The arrangement of the inspection ports 38 and the inspection doors 39 makes it easier to inspect and maintain the various components inside the body 1.

[0057] The present invention also provides a method for detecting the cavity size of an annular isolator, comprising the following steps:

[0058] S1. Placement: Place the items to be inspected in an orderly manner on the conveyor belt 19 according to the marking lines on the conveyor belt 19;

[0059] S2. Position Correction: When the sample to be tested is waiting to be delivered to the bottom of the testing institution, the position correction mechanism will correct the position of the sample to be tested so that it is delivered directly to the bottom of the testing institution;

[0060] S3. Inspection: After the inspection item is sent to the bottom of the inspection agency, the main inspection component and the lighting component generate different colored lights to illuminate the dark cavity. Then, the laser range sensor 10 and the inspection probe 11 perform multiple inspections on the cavity size and defects of the inspection item based on the laser principle. The inspection probe adopts the laser scanning principle and repeats the inspection and scanning under multiple supplementary lights.

[0061] S4. Comparative Analysis: Compare and analyze the results of multiple tests, and based on the results of the comparative analysis, obtain accurate values ​​and find out if there are any defects in the cavity.

[0062] S5. Conveying: The inspected products continue to be conveyed forward along the conveyor belt 19 to the next process.

[0063] In this invention, the products to be tested are placed orderly on the conveyor belt 19 according to the marking lines. The electric push rod 6 is activated, which drives the lifting block 7 to descend. The descent of the lifting block 7 causes the lower pressure plate 4 to move downward, which in turn causes the sealing plate 3 to move downward until the sealing plate 3 contacts the product and seals the cavity. Then, the lower pressure plate 4 continues to descend, and through the threaded connection with the screw 8, the screw 8 rotates. The rotation of the screw 8 causes the mounting column 9 to rotate, which in turn causes the laser range sensor 10 and the detection probe 11 to rotate, scanning the inside of the cavity. At the same time, the conductive block 16 contacts the conductive strip 15, causing the LED bead 12 to emit light. The detection probe 11 uses the light emitted by the LED bead 12 to scan and detect the inside of the cavity. During the downward pressing of the lower pressure plate 4, the mounting column 9 rotates three times, so that the laser range sensor 10 and the detection probe 11 perform three scans of the inside of the cavity and transmit the three scan results to the computer. The computer compares and analyzes the three scan results to obtain the final accurate data.

[0064] During the downward movement of the pressure plate 4, which drives the mounting column 9 to rotate three times, the conductive block 16 contacts the three conductive strips 15 during the first rotation, causing all three LED beads 12 inside the lamp cover 13 to light up, emitting white light. The laser range sensor 10 and the detection probe 11 perform a scan under white light. During the second rotation, the conductive block 16 separates from one of the conductive strips 15 and only contacts the two conductive strips 15, at which point only green and blue light combine to form cyan light. The laser range sensor 10 and the detection probe 11 complete the second scan under cyan light. During the third rotation of the mounting column 9, the conductive block 16 contacts only one conductive strip 15, at which point only blue light is emitted. The laser range sensor 10 and the detection probe 11 complete the third scan under blue light. That is, the three scans are performed under different colored light. Since the details of the metal surface are displayed differently under different wavelengths of supplementary light, using three different wavelengths of light for supplementary lighting can yield three different sets of data. By comparing and analyzing the different detection data, more accurate detection data can be obtained.

[0065] During the descent of the lifting block 7 for inspection, the meshing of the rack 21 and gear 23 causes the gear 23 to drive the rotating shaft 22 to rotate clockwise. Due to the one-way bearing, the rotating shaft 22 drives the turntable 26 to rotate one revolution, while the first pulley 24 does not rotate. During one revolution of the turntable 26, the connecting rod 31 drives the piston 28 to complete one cycle of reciprocating motion. The piston 28 then uses hydraulic oil to cause the sliding column 34 in the sliding sleeve 33 to complete one cycle of reciprocating motion. This causes the two sliding columns 34 to drive the push block 35 to move synchronously towards each other and then away from each other. During the moving towards each other, the position of the next product to be inspected is corrected so that it is located in the middle of the conveyor belt 19, thus ensuring that it is directly below the inspection mechanism after conveying, improving the accuracy of the inspection.

[0066] After a product is inspected, the electric push rod 6 drives the lifting block 7 to rise and reset. At this time, the rack 21 drives the gear 23 to rotate counterclockwise, which in turn causes the rotating shaft 22 to rotate counterclockwise. With the one-way bearing, the rotating shaft 22 drives the first pulley 24 to rotate, but does not drive the turntable 26 to rotate. The rotation of the first pulley 24 will drive the second pulley 241 to rotate through the synchronous belt 25, which in turn causes the rotating rod 17 to rotate, which in turn causes the rotating roller 18 to rotate. The rotating roller 18 drives the conveyor belt 19 to move, sending the inspected product away from the inspection mechanism and sending the next product to be inspected to the bottom of the inspection mechanism. Then the electric push rod 6 extends again for inspection, and so on.

[0067] Processing personnel collect the inspected products on conveyor belt 19 and send them to the next process, while continuously placing products to be inspected according to the scale lines.

[0068] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A cavity size detection device for an annular isolator, comprising a hollow body (1), characterized in that, A support platform (20) is fixedly connected to the side wall of the body (1), and a rotating shaft (22) is rotatably connected to the inner side wall of the body (1) through a bearing; The side wall of the body (1) is provided with a detection mechanism, which consists of a main inspection component and a lighting component. The main inspection component includes an L-shaped guide block (2) and a screw (8). The guide block (2) is fixedly connected to the side wall of the body (1). The guide block (2) is slidably connected to a closed plate (3) and a lower pressure plate (4). The screw (8) and the closed plate (3) are rotatably connected through a bearing. The lower pressure plate (4) is threadedly connected to the screw (8). The lower surface of the screw (8) is fixedly connected to a mounting post (9). The side wall of the mounting post (9) is fixedly connected to a laser rangefinder (10) and a detection probe (11). The top wall of the body (1) is fixedly connected to an electric push rod (6). The output end of the electric push rod (6) is fixedly connected to a lifting block (7). The lighting component includes a groove (14). The groove (14) is opened in the guide block (2). The inner side wall of the groove (14) is fixedly connected to three conductive strips (15). A conveying mechanism is provided at the body (1), the conveying mechanism includes two rotating rods (17), the rotating rods (17) are rotatably connected to the side wall of the body (1) through bearings; A position correction mechanism is provided at the body (1). The position correction mechanism consists of a drive component and a push component. The drive component includes a liquid tank (27), which is fixedly connected to the inner wall of the body (1). The liquid tank (27) is filled with hydraulic oil. The push component includes a hollow intermediate block (32), which is fixedly connected to the body (1) and the support platform (20).

2. The cavity size detection device for an annular isolator according to claim 1, characterized in that, The side wall of the machine body (1) is provided with a sliding hole (5), the lower pressure plate (4) is slidably connected to the side wall of the machine body (1) through the sliding hole (5), and the lower pressure plate (4) is fixedly connected to the side wall of the lifting block (7).

3. The cavity size detection device for an annular isolator according to claim 1, characterized in that, The lighting assembly also includes multiple sets of LED beads (12), which are fixedly connected to the lower surface of the enclosed disk (3). Each set of LED beads (12) has three LED beads. Multiple lamp covers (13) are fixedly connected to the lower surface of the enclosed disk (3). A conductive block (16) is fixedly connected to the inner wall of the pressure plate (4). The conductive block (16) is slidably connected in the groove (14). The conductive block (16), the conductive strip (15), and the LED beads (12) are electrically connected by wires.

4. The cavity size detection device for an annular isolator according to claim 1, characterized in that, The conveying mechanism also includes a first pulley (24), which is rotatably connected to the shaft (22) via a one-way bearing. The shaft (22) is fixedly connected to a gear (23). The side wall of the lifting block (7) is fixedly connected to a rack (21), which meshes with the gear (23). One of the rotating rods (17) is fixedly connected to a second pulley (241) at one end inside the machine body (1). The first pulley (24) and the second pulley (241) are connected to a synchronous belt (25). The rotating rod (17) is fixedly connected to a rotating roller (18) at one end outside the machine body (1). The two rotating rollers (18) are connected to a conveyor belt (19) that is tensioned together. The surface of the conveyor belt (19) is coated with marking lines.

5. The cavity size detection device for an annular isolator according to claim 1, characterized in that, The drive assembly also includes a piston (28), which is slidably and sealed within the liquid tank (27). The rotating shaft (22) is rotatably connected to a turntable (26) via a one-way bearing. An active column (30) is fixedly connected to the side wall of the turntable (26). A driven column (29) is fixedly connected to the piston (28). The driven column (29) and the active column (30) are rotatably connected through a connecting rod (31). A first pipe (321) is fixedly connected to the liquid tank (27) and the intermediate block (32). The first pipe (321) connects the liquid tank (27) and the intermediate block (32).

6. The cavity size detection device for an annular isolator according to claim 1, characterized in that, The pushing assembly also includes two sliding sleeves (33), one of which is fixedly connected to the upper surface of the body (1), and the other is fixedly connected to the upper surface of the support platform (20). The sliding sleeve (33) is slidably connected to a sliding column (34). The sliding sleeve (33), the body (1), the support platform (20), and the intermediate block (32) are all connected by two second pipes (36). The second pipes (36) connect the corresponding sliding sleeve (33) to the intermediate block (32). The intermediate block (32) and the sliding sleeve (33) are both filled with hydraulic oil. The second pipe (36) is equipped with a pressure relief valve (37).

7. The cavity size detection device for an annular isolator according to claim 6, characterized in that, Push blocks (35) are fixedly connected to the sidewalls of the two sliding columns (34) on opposite sides. The push blocks (35) are made of rubber.

8. The cavity size detection device for an annular isolator according to claim 2, characterized in that, The guide block (2), the pressure plate (4), and the sealing plate (3) are all made of polytetrafluoroethylene. A damping washer is provided at the rotational connection between the screw (8) and the sealing plate (3).

9. The cavity size detection device for an annular isolator according to claim 1, characterized in that, The machine body (1) has multiple inspection ports (38) on its side wall, and an inspection door (39) is rotatably connected to each inspection port (38) via a hinge.

10. A detection method using the cavity size detection device of the annular isolator as described in claim 4, characterized in that, Includes the following steps: S1. Placement: Place the items to be tested in an orderly manner on the conveyor belt (19) according to the marking lines on the conveyor belt (19); S2. Position Correction: When the sample to be tested is waiting to be delivered to the bottom of the testing institution, the position correction mechanism will correct the position of the sample to be tested so that it is delivered directly to the bottom of the testing institution; S3, Inspection: After the inspection item is sent to the bottom of the inspection agency, the main inspection component and the lighting component generate different colored lights to illuminate the dark cavity. Then, the laser range sensor (10) and the inspection probe (11) perform multiple inspections on the cavity size and defects of the inspection item based on the laser principle. The inspection probe (11) adopts the laser scanning principle and performs repeated inspections under multiple illuminations. S4. Comparative Analysis: Compare and analyze the results of multiple tests, and based on the results of the comparative analysis, obtain accurate values ​​and find out if there are any defects in the cavity. S5. Conveying: The inspected products continue to be conveyed forward along the conveyor belt (19) to the next process.

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