Image recognition-based doublet lens flaw detection device

Abstract

The application belongs to the technical field of lens flaw detection, in particular to a double-flat coupling lens flaw detection device based on image recognition, which comprises a collecting part, a bearing part, a cleaning mechanism, a supply mechanism and a heat exchange mechanism. The collecting part comprises a mounting table, a collector and a light source. The collector is slidingly arranged above the mounting table, and the light source is located directly below the collector. The bearing part comprises an elastic clamp jaw and a bearing disc rotatably mounted on the upper end surface of the mounting table. The elastic clamp jaw is fixedly mounted on the outer wall of the bearing disc. The cleaning mechanism comprises a mounting cylinder, a wiping strip and a blowing cover. The mounting cylinder, the wiping strip and the blowing cover are all arranged above the bearing disc. The supply mechanism comprises a storage cylinder and a control cylinder. The storage cylinder provides cleaning liquid to the inner cavity of the mounting cylinder, and the gas in the inner cavity of the control cylinder is conveyed to the inner cavity of the blowing cover after flowing through the inner cavity of the storage cylinder. Through the cooperation of the above structure, the limitation of separating cleaning and detection in the prior art is broken, and the coherence and efficiency of the detection process are greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of lens defect detection technology, specifically a dual-plane coupling lens defect detection device based on image recognition. Background Technology

[0002] As a core component of an optical system, the surface and internal defects of a double-plane coupling lens directly affect the transmission efficiency of optical signals and the imaging quality. Therefore, strict defect detection is required after production and processing. Currently, image recognition-based detection methods are widely used in the field of defect detection for double-plane coupling lenses due to their high detection efficiency and high accuracy.

[0003] In existing technologies, the cleaning process before lens inspection is usually completed before transportation. After cleaning, the lens needs to be transported to the inspection site through a transfer mechanism. During the transportation process, the cleaned lens inevitably comes into contact with suspended dust in the air. Dust easily adheres to the lens surface, and double planar coupling lenses have extremely high requirements for surface cleanliness. Even tiny dust particles can form false defects during image recognition, leading to misjudgment and affecting the detection accuracy.

[0004] Meanwhile, existing transfer methods mostly use suction cup adsorption. When the suction cup comes into contact with the lens, a closed vacuum environment is formed. The suction cup material (usually nitrile rubber) and the lens surface generate slight friction, leaving trace rubber residue that forms an oil film-like mark. Secondly, during vacuum adsorption, the suction cup exerts uniform pressure on the lens surface, compressing trace amounts of oil and moisture in the air into the contact area, forming a ring-shaped mark. Thirdly, trace amounts of cleaning liquid that may remain on the lens surface will be squeezed into a ring-shaped distribution under the pressure of the suction cup, and form a mark after drying.

[0005] Therefore, the present invention provides a defect detection device for dual-plane coupled lenses based on image recognition. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: the image recognition-based dual-plane coupling lens defect detection device of the present invention includes a collection unit, a support unit, a cleaning mechanism, a supply mechanism and a heat exchange mechanism;

[0008] The acquisition unit includes a mounting platform, an acquisition unit, and a light source. The acquisition unit is slidably mounted above the mounting platform, and the light source is located directly below the acquisition unit.

[0009] The bearing unit includes elastic grippers and a bearing plate rotatably mounted on the upper surface of the mounting platform, with the elastic grippers fixedly mounted on the outer wall of the bearing plate;

[0010] The cleaning mechanism includes a mounting cylinder, wiping strips, and a blower hood, all of which are positioned above the support plate.

[0011] The supply mechanism includes a storage cylinder and a control cylinder. The storage cylinder supplies cleaning fluid to the inner cavity of the installation cylinder, and the gas in the inner cavity of the control cylinder flows through the inner cavity of the storage cylinder and is then delivered to the inner cavity of the blow hood.

[0012] The heat exchange mechanism is used to absorb the heat from the heating element of the light source and transport it to the inner cavity of the control cylinder.

[0013] Preferably, the heat exchange mechanism includes a flow hood, a temperature control plate, a guide fan, a mounting box, and a sealing cover;

[0014] The mounting box is fixedly installed inside the mounting platform, the light source is fixedly installed on the inner wall of the mounting box, the flow hood is fixedly installed on the outer wall of the mounting box, and the guide fan is fixedly installed at one end of the flow hood.

[0015] The temperature control element has a cold end and a hot end. The cold end of the temperature control element is located in the inner cavity of the flow hood. The sealing cover is fixedly installed on the outer wall of the flow hood. The hot end of the temperature control element is located in the inner cavity of the sealing cover. The inner cavity of the control cylinder is connected to the inner cavity of the sealing cover through an insulation pipe.

[0016] Preferably, a platform is slidably mounted on the upper end of the mounting platform, the collector is fixedly mounted on the outer wall of the platform, and a light shield is fixedly mounted on the outer wall of the collector;

[0017] A control motor is fixedly installed on the outer wall of the mounting platform, and the output shaft of the control motor is fixedly connected to the center position of the axial end of the bearing plate.

[0018] The air inlet end of the hood is detachably fitted with a filter;

[0019] The outer wall of the mounting platform is equipped with a mounting plate, and the mounting cylinder, wiping strip and blow nozzle can all be detachably installed on the upper surface of the mounting plate.

[0020] Preferably, a pressure boosting cylinder is elastically mounted on the outer wall of the mounting cylinder, and an adapter pipe connected to the inner cavity of the storage cylinder is fixedly mounted on the outer wall of the pressure boosting cylinder. A guide pipe is fixedly mounted on the inner cavity of the mounting cylinder, and a sealing ring is fixedly mounted on the outer wall of the guide pipe. The outer wall of the sealing ring slides against the inner wall of the pressure boosting cylinder.

[0021] A flow-blocking ring is fixedly installed on the inner wall of the flow-blocking tube, and a conical plug is provided on the inner wall of the flow-blocking ring. A support frame is fixedly installed on the inner wall of the flow-blocking tube, and the upper end face of the support frame is connected to the bottom face of the conical plug through an elastic element.

[0022] A conical platform is fixedly installed on the bottom surface of the support frame, and a conical gap is reserved between the outer wall of the conical platform and the inner wall of the guide tube for the cleaning liquid to pass through.

[0023] The control cylinder has a unidirectional air inlet pipe and an exhaust pipe. The air inlet pipe of the control cylinder is connected to the inner cavity of the sealed cover. A spiral tube is fixedly installed in the inner cavity of the storage cylinder. One end of the spiral tube is connected to the exhaust pipe of the control cylinder, and the other end of the spiral tube is connected to the inner cavity of the blow hood.

[0024] Preferably, a support plate is fixedly installed on the outer wall of the mounting cylinder, a control arm is elastically installed on the outer wall of the support plate, a waist-shaped groove is opened on the side wall of the control arm, and a pin is provided on the outer wall of the booster cylinder that slides with the waist-shaped groove.

[0025] A transmission boss for pressing control arm is fixedly installed on the upper end face of the bearing plate. Multiple transmission bosses are evenly arranged in a ring along the axis of the bearing plate, and the position of the transmission boss corresponds to the position of the workpiece to be tested.

[0026] Preferably, an installation arm is fixedly installed on the outer wall of the installation platform, a storage cylinder is detachably installed on the outer wall of the installation arm, an installation plate is fixedly connected to the outer wall of the installation arm, and the outer wall of the control cylinder is fixedly connected to the outer wall of the installation arm.

[0027] The outer wall of the mounting arm rotates the transmission crankshaft, which is controlled by a control motor. A control plug is slidably installed inside the control cylinder, and a transmission connecting rod is rotatably installed on the outer wall of the transmission crankshaft. The other end of the transmission connecting rod is rotatably connected to the outer wall of the control plug.

[0028] The beneficial effects of this invention are as follows:

[0029] 1. This invention effectively solves the technical problems of easy secondary dust contamination during lens cleaning before transfer and the interference of annular marks generated during suction cup transfer in existing technologies by setting up a carrier plate, mounting cylinder, and blow-blowing hood. The carrier plate can drive the lens to complete the cleaning and testing processes simultaneously, fundamentally avoiding secondary pollution during the transfer process after cleaning. The cleaning liquid sprayed by the mounting cylinder can accurately dissolve the annular marks generated during suction cup transfer and the dust attached to the surface. The gas sprayed by the blow-blowing hood can not only quickly dry the residual cleaning liquid, but also form an air curtain to isolate dust, prevent dust-related false defects and interference from suction cup annular marks, and greatly improve the detection accuracy. At the same time, the seamless connection between cleaning and testing breaks the limitation of the separation of cleaning and testing in existing technologies, and greatly improves the continuity and efficiency of the testing process.

[0030] 2. This invention further optimizes detection performance and extends the lifespan of the device by incorporating a temperature control plate, a light shield, and an adjustable polarized light source. The temperature control plate enables the recovery and utilization of waste heat from the light source, solving the problem of light source heating affecting irradiation stability, improving the fluidity of the cleaning solution and the drying speed of the lens, and reducing the risk of contamination. The light shield creates a closed detection environment, reducing interference from stray light on image acquisition. The adjustable polarized light source can accurately suppress specular reflection on the lens surface, clearly highlighting various minor flaws and improving the accuracy of image recognition. The synergistic effect of these three components not only optimizes the detection effect but also simplifies the overall design and enhances the device's adaptability to different specifications of dual-plane coupling lenses. Attached Figure Description

[0031] The invention will now be further described with reference to the accompanying drawings.

[0032] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the mounting platform in this invention;

[0034] Figure 3 This is a schematic diagram of the installation of the light source in this invention;

[0035] Figure 4 This is a schematic diagram of the structure of the carrier disk in this invention;

[0036] Figure 5 This is a schematic diagram of the mounting cylinder in this invention;

[0037] Figure 6 This is a schematic diagram of the internal structure of the pressure boosting cylinder in this invention;

[0038] Figure 7 This is a schematic diagram of the control cylinder in this invention;

[0039] Figure 8 This is a schematic diagram of the internal structure of the control cylinder in this invention.

[0040] In the diagram: 1. Mounting platform; 2. Carrier platform; 3. Collector; 4. Light shield; 5. Puffing hood; 6. Mounting plate; 7. Storage cylinder; 8. Mounting cylinder; 9. Mounting arm; 10. Control arm; 11. Transmission boss; 12. Carrier plate; 13. Filter; 14. Flow hood; 15. Sealing hood; 16. Control motor; 17. Light source; 18. Temperature control plate; 19. Guide fan; 20. Mounting box; 21. Spiral tube; 22. Adaptor tube; 23. Pressure booster cylinder; 24. Wiping strip; 25. Guide tube; 26. Support plate; 27. Sealing ring; 28. Conical plug; 29. ​​Flow dam; 30. Support frame; 31. Conical platform; 32. Control cylinder; 33. Transmission crankshaft; 34. Transmission connecting rod; 35. Control plug; 36. Elastic gripper. Detailed Implementation

[0041] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0042] like Figures 1 to 8 As shown, the present invention provides a dual-plane coupling lens defect detection device based on image recognition, comprising a collection unit, a support unit, a cleaning mechanism, a supply mechanism, and a heat exchange mechanism.

[0043] The acquisition unit includes a mounting platform 1, an acquisition unit 3, and a light source 17. The acquisition unit 3 is a common industrial camera used to acquire image information of the lens. The acquisition unit 3 is slidably mounted above the mounting platform 1, and the light source 17 is located directly below the acquisition unit 3. During inspection, the lens to be inspected is placed between the acquisition unit 3 and the light source 17. The light source 17 is preferably an adjustable polarization ring LED light source. This light source 17 is suitable for the defect detection of double-plane coupled lenses. By adjusting the polarization direction, it can effectively suppress specular reflection on the lens surface and avoid stray light interference. At the same time, it can accurately highlight minor scratches, pits, internal bubbles, internal stress, and other defects on the lens surface, which meets the image acquisition accuracy requirements of the acquisition unit 3.

[0044] During testing, the lens to be tested is placed between the collector 3 and the light source 17. The polarized light emitted by the light source 17 penetrates the lens perpendicularly. The normal area of ​​the lens allows the polarized light to pass through smoothly, while scratches, pits, bubbles, internal stress and other defects on the lens surface will cause refraction, scattering or changes in polarization of the polarized light, resulting in different light intensity differences between the defective area and the normal area. The collector 3 accurately captures this light intensity difference, acquires a clear image of the lens and transmits it to the background processing system. By identifying the abnormal light intensity areas in the image, the defect of the lens is identified and judged, realizing the defect detection of the double-plane coupled lens.

[0045] The carrier unit includes elastic grippers 36 and a carrier plate 12 rotatably mounted on the upper surface of the mounting platform 1. The elastic grippers 36 are fixedly mounted on the outer wall of the carrier plate 12. A through hole for placing the lens to be tested is opened on the carrier plate 12. Multiple elastic grippers 36 are evenly arranged in a ring along the axis of the through hole. During testing, the lens is placed in the through hole by the suction cup of the external robotic arm (not shown in the figure) and held by the multiple elastic grippers 36. During testing, the carrier plate 12 is rotated to transport the lens to be tested between the light source 17 and the collector 3.

[0046] The cleaning mechanism includes a mounting cylinder 8, a wiping strip 24, and a blower hood 5. The mounting cylinder 8, the wiping strip 24, and the blower hood 5 are all positioned above the support plate 12. The wiping strip 24 is elastic, with a breathable non-woven fabric exterior and an absorbent sponge interior.

[0047] The supply mechanism includes a storage cylinder 7 and a control cylinder 32. The storage cylinder 7 supplies cleaning fluid to the inner cavity of the mounting cylinder 8. The inner cavity of the storage cylinder 7 stores cleaning fluid (in this embodiment, the cleaning fluid is a commercially available lens cleaning fluid). After the gas flows through the inner cavity of the storage cylinder 7, it is delivered to the inner cavity of the blow nozzle 5. By adjusting the air pressure in the inner cavity of the control cylinder 32, the gas is controlled to be delivered to the blow nozzle 5 for discharge.

[0048] As the carrier plate 12 rotates, the lens it carries first passes under the mounting cylinder 8. At this time, the cleaning fluid is sprayed onto the surface of the lens. As the carrier plate 12 rotates, the lens after being sprayed with cleaning fluid is scraped by the wiping strip 24. As the carrier plate 12 continues to rotate, the scraped lens is located under the blow hood 5, thus cleaning the lens. As the carrier plate 12 continues to rotate, the cleaned lens moves to the area below the collector 3 for detection.

[0049] This cleaning process uses the cleaning fluid sprayed from the mounting cylinder 8 to dissolve dust and stains on the lens surface, combined with the scraping action of the wiping strip 24 to remove stubborn dust. The remaining cleaning fluid and fine dust are then dried by the air sprayed from the blower hood 5, achieving a thorough cleaning of the lens surface and preventing dust from forming false defects that affect detection accuracy. Compared to existing technologies that clean the lens before transport, this method effectively removes dirt generated during lens transport by the suction cup. After cleaning, the lens can be immediately placed between the collector 3 and the light source 17 for detection, shortening the interval between cleaning and detection. This prevents dust from re-accumulating during transport after cleaning, further ensuring detection accuracy. Furthermore, it eliminates the need for an additional transport cleaning station, simplifying the device structure and improving detection efficiency.

[0050] The heat exchange mechanism absorbs heat from the heating element of the light source 17 and delivers it to the inner cavity of the control cylinder 32. This not only effectively dissipates heat from the light source 17, preventing it from being damaged due to prolonged high temperatures and ensuring stable operation and lifespan, but also heats the gas inside the control cylinder 32. When the heated gas flows through the inner cavity of the storage cylinder 7, it gently heats the cleaning fluid inside, preventing it from becoming less fluid and difficult to spray onto the lens surface through the mounting cylinder 8 due to low temperature. Furthermore, when the heated gas is delivered to the blow hood 5, it quickly dries the cleaning fluid remaining on the lens surface after being wiped by the wiping strip 24, thereby shortening the time from cleaning to testing and further reducing the risk of contamination.

[0051] The heat exchange mechanism includes a flow hood 14, a temperature control element 18, a flow guide fan 19, a mounting box 20, and a sealing cover 15. Among them, the temperature control element 18 is a common semiconductor refrigeration element.

[0052] The mounting box 20 is fixedly installed inside the mounting platform 1, and the light source 17 is fixedly installed on the inner wall of the mounting box 20. A heat exchange copper plate is provided at the heating part of the light source 17, and the heat exchange copper plate extends into the inner cavity of the mounting box 20.

[0053] The flow hood 14 is fixedly installed on the outer wall of the mounting box 20, and the guide fan 19 is fixedly installed at one end of the flow hood 14. Through the operation of the guide fan 19, an airflow that penetrates the mounting box 20 is generated inside the flow hood 14, thereby increasing the airflow speed on the surface of the heat exchange copper plate and maintaining the stability of the lens illuminated by the light source 17.

[0054] The temperature control element 18 has a cold end and a hot end. The cold end of the temperature control element 18 is located in the inner cavity of the flow cover 14. The sealing cover 15 is fixedly installed on the outer wall of the flow cover 14. The hot end of the temperature control element 18 is located in the inner cavity of the sealing cover 15. The inner cavity of the control cylinder 32 is connected to the inner cavity of the sealing cover 15 through a heat insulation pipe. When the temperature control element 18 is working, its cold end cools down, thereby cooling down the air inside the flow cover 14 and further improving the heat dissipation effect of the light source 17. At the same time, the hot end of the temperature control element 18 heats up, raising the temperature of the air inside the sealing cover 15. The control cylinder 32 draws in the heated air inside the sealing cover 15, thereby heating the cleaning fluid in the storage cylinder 7 and heating the air delivered to the inside of the sealing cover 15.

[0055] In a preferred embodiment of the present invention, a platform 2 is slidably disposed on the upper end of the mounting platform 1. A lead screw is disposed inside the mounting platform 1, and a servo motor for controlling the rotation of the lead screw is disposed on the upper end of the mounting platform 1. The lead screw passes through the platform 2 and is connected to the platform 2 through internal and external thread engagement, thereby realizing the lifting and lowering of the platform 2 by controlling the rotation of the lead screw.

[0056] The collector 3 is fixedly installed on the outer wall of the stage 2. A light shield 4 is fixedly installed on the outer wall of the collector 3. A rubber buffer ring is set at the bottom of the light shield 4. During the detection, the stage 2 is lowered until the rubber buffer ring at the bottom of the light shield 4 is in contact with the surface of the carrier plate 12, thereby sealing the detection area, preventing stray light from interfering with the detection, and further improving the detection accuracy.

[0057] A control motor 16 is fixedly installed on the outer wall of the mounting platform 1. The output shaft of the control motor 16 is fixedly connected to the center position of the axial end of the bearing plate 12. The control motor 16 controls the bearing plate 12 to rotate, thereby driving the lens to be tested on the bearing plate 12 to move.

[0058] A filter 13 is detachably installed at the air inlet end of the sealed cover 15. When the control cylinder 32 draws air into the inner cavity of the sealed cover 15, external gas enters the inner cavity of the sealed cover 15 through the filter 13. The filter 13 is used to filter dust in the air, thereby maintaining the cleanliness of the gas used to blow dry the lens.

[0059] Hot air can quickly dry residual cleaning fluid on the lens surface, while forming a high-speed hot air curtain on the lens surface. This can not only block the approach of unfiltered fine dust, but also blow away suspended dust near the lens, preventing secondary contamination after cleaning and avoiding false defects from interfering with the detection.

[0060] The outer wall of the mounting platform 1 is provided with a mounting plate 6. The mounting cylinder 8, wiping strip 24 and blow nozzle 5 can all be detachably mounted on the upper surface of the mounting plate 6. The mounting plate 6 is located above the bearing plate 12 and provides installation and support for the mounting cylinder 8, wiping strip 24 and blow nozzle 5.

[0061] A pressure-boosting cylinder 23 is elastically installed on the outer wall of the mounting cylinder 8. A spring is provided at the bottom of the pressure-boosting cylinder 23, and the other end of the spring is fixedly connected to the upper end face of the mounting cylinder 8. After pressing the pressure-boosting cylinder 23, the spring force controls the pressure-boosting cylinder 23 to reset. A transfer pipe 22 connected to the inner cavity of the storage cylinder 7 is fixedly installed on the outer wall of the pressure-boosting cylinder 23, and the communication between the pressure-boosting cylinder 23 and the inner cavity of the storage cylinder 7 is realized through the transfer pipe 22.

[0062] The inner cavity of the mounting cylinder 8 is fixedly installed with a guide pipe 25, and a sealing ring 27 is fixedly installed on the outer wall of the guide pipe 25. The sealing ring 27 is made of wear-resistant rubber. The outer wall of the sealing ring 27 slides and fits against the inner wall of the pressure boosting cylinder 23 to achieve a sealed connection between the guide pipe 25 and the pressure boosting cylinder 23.

[0063] A flow-blocking ring 29 is fixedly installed on the inner wall of the flow-blocking pipe 25. A conical plug 28 is provided on the inner wall of the flow-blocking ring 29. A conical hole adapted to the conical plug 28 is opened inside the flow-blocking ring 29. A support frame 30 is fixedly installed on the inner wall of the flow-blocking pipe 25. The upper end face of the support frame 30 is connected to the bottom face of the conical plug 28 through an elastic element. The elastic force of the elastic element pushes the conical plug 28, so that the conical plug 28 has a tendency to block the flow-blocking ring 29 in real time, thereby realizing the unidirectional flow of the flow-blocking pipe 25.

[0064] A conical platform 31 is fixedly installed on the bottom surface of the support frame 30. A conical gap is reserved between the outer wall of the conical platform 31 and the inner wall of the guide pipe 25 for the cleaning liquid to pass through. When the cleaning liquid is discharged through the gap, a conical water mist is generated. At the same time, the setting of the conical platform 31 reduces the orifice diameter of the discharge cleaning liquid, thereby refining the water droplets and ensuring that the lens receives the cleaning liquid evenly as much as possible.

[0065] The adapter pipe 22 is equipped with a one-way valve. When cleaning fluid needs to be sprayed, the booster cylinder 23 is lifted, and then the spring force controls the booster cylinder 23 to slide back and forth. This allows the cleaning fluid in the storage cylinder 7 to be drawn into the chamber between the booster cylinder 23 and the guide pipe 25 through the adapter pipe 22. Then, when the space in the chamber between the booster cylinder 23 and the guide pipe 25 is compressed, the fluid is discharged through the guide pipe 25, thus achieving the spraying of the lens.

[0066] The control cylinder 32 has a one-way air inlet pipe and an exhaust pipe. Both the air inlet pipe and the exhaust pipe of the control cylinder 32 are equipped with one-way valves. The air inlet pipe of the control cylinder 32 is connected to the inner cavity of the sealed cover 15. The inner cavity of the storage cylinder 7 is fixedly installed with a spiral tube 21. One end of the spiral tube 21 is connected to the exhaust pipe of the control cylinder 32, and the other end of the spiral tube 21 is connected to the inner cavity of the blow-blowing cover 5. By reciprocating the adjustment of the air pressure in the inner cavity of the control cylinder 32, the gas in the inner cavity of the sealed cover 15 is drawn out, then discharged into the spiral tube 21, and finally delivered to the blow-blowing cover 5 to realize the blowing of the lens.

[0067] In a preferred embodiment of the present invention, a support plate 26 is fixedly installed on the outer wall of the mounting cylinder 8, and a control arm 10 is elastically installed on the outer wall of the support plate 26. The control arm 10 is rotatably connected to the side wall of the support plate 26, and a torsion spring is provided at the connection position. The side wall of the control arm 10 is provided with a waist-shaped groove, and the outer wall of the booster cylinder 23 is provided with a pin that slides with the waist-shaped groove. Rotating the control arm 10 drives the booster cylinder 23 to rise and fall.

[0068] A transmission boss 11 for pressing the control arm 10 is fixedly installed on the upper end face of the bearing plate 12. When the bearing plate 12 rotates, the control arm 10 is lifted by the transmission boss 11, thereby controlling the riser cylinder 23 to rise until the transmission boss 11 separates from the control arm 10. At this time, the spring controls the riser cylinder 23 to reset, realizing the adjustment of the reciprocating sliding of the riser cylinder 23, thereby realizing the spraying of cleaning liquid.

[0069] Multiple transmission bosses 11 are evenly arranged in a ring along the axis of the bearing plate 12, and the position of the transmission bosses 11 corresponds to the position of the workpiece to be tested, so that spraying begins when the lens enters below the mounting cylinder 8.

[0070] An mounting arm 9 is fixedly mounted on the outer wall of the mounting platform 1. The storage cylinder 7 is detachably mounted on the outer wall of the mounting arm 9. The mounting plate 6 is fixedly connected to the outer wall of the mounting arm 9. The outer wall of the control cylinder 32 is fixedly connected to the outer wall of the mounting arm 9. The mounting arm 9 provides installation and support for the storage cylinder 7, the mounting plate 6, and the control cylinder 32.

[0071] The outer wall of the mounting arm 9 rotates the transmission crankshaft 33, which is controlled to rotate by the control motor 16. A driven gear is provided at the axial end of the transmission crankshaft 33, and a driving gear that meshes with the driven gear is provided on the outer wall of the output shaft of the control motor 16, thereby realizing the control of the transmission crankshaft 33 to rotate by the control motor 16.

[0072] A control plug 35 is slidably installed in the inner cavity of the control cylinder 32, and a transmission connecting rod 34 is rotatably installed on the outer wall of the transmission crankshaft 33. The other end of the transmission connecting rod 34 is rotatably connected to the outer wall of the control plug 35. At least two control cylinders 32 are provided. When the transmission crankshaft 33 rotates, the control plug 35 is driven to slide back and forth through the transmission connecting rod 34. Through the cooperation of multiple control cylinders 32, gas is delivered into the blow hood 5.

[0073] The suction cup of the external robotic arm places the lens to be tested into the through hole of the carrier plate 12. Multiple elastic grippers 36 clamp and fix the lens. The control motor 16 drives the carrier plate 12 to rotate. When the lens moves to below the mounting cylinder 8, the transmission boss 11 on the carrier plate 12 presses against the control arm 10, causing the pressure cylinder 23 to slide back and forth. The cleaning fluid in the storage cylinder 7 is drawn through the adapter pipe 22 and sprayed onto the lens surface through the guide pipe 25. As the carrier plate 12 continues to rotate, the lens after being sprayed with cleaning fluid is scraped by the wiping strip 24 to remove surface dirt and excess cleaning fluid. Then the lens moves to below the blow hood 5. The control motor 16 drives the transmission crankshaft 33 to rotate, which drives the control plug 35 in the control cylinder 32 to slide back and forth through the transmission connecting rod 34, drawing out the filter 13 and temperature control plate 1. The air inside the sealed cover 15 after the hot end is heated is transported to the blower cover 5 through the spiral tube 21, and hot air is blown onto the lens to dry the residual cleaning liquid and form an air curtain to prevent secondary dust accumulation. After cleaning, the carrier plate 12 transports the lens between the collector 3 and the light source 17. The servo motor controls the screw to rotate and drive the stage 2 to descend, so that the light shield 4 on the outer wall of the collector 3 fits against the carrier plate 12 to seal the detection area. The adjustable polarization ring LED light emitted by the light source 17 penetrates the lens vertically. The defect area causes the polarized light to refract, scatter or change its polarization state. The collector 3 captures the light intensity difference and collects the image and transmits it to the background processing system to complete the defect identification and judgment. After the inspection is completed, the suction cup of the external robotic arm removes the lens from the through hole of the carrier plate 12, completing a complete inspection process.

[0074] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0075] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0076] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A defect detection device for dual-plane coupled lenses based on image recognition, characterized in that: It includes a collection unit, a carrying unit, a cleaning unit, a supply unit, and a heat exchange unit; The acquisition unit includes a mounting platform (1), an acquisition device (3), and a light source (17). The acquisition device (3) is slidably disposed above the mounting platform (1), and the light source (17) is located directly below the acquisition device (3). The bearing part includes an elastic gripper (36) and a bearing plate (12) rotatably mounted on the upper end face of the mounting platform (1). The elastic gripper (36) is fixedly mounted on the outer wall of the bearing plate (12). The cleaning mechanism includes a mounting cylinder (8), a wiping strip (24), and a blower (5), all of which are positioned above the support plate (12). The supply mechanism includes a storage cylinder (7) and a control cylinder (32). The storage cylinder (7) supplies cleaning fluid to the inner cavity of the mounting cylinder (8). The gas in the inner cavity of the control cylinder (32) flows through the inner cavity of the storage cylinder (7) and is then delivered to the inner cavity of the blow hood (5). The heat exchange mechanism is used to absorb the heat from the heating part of the light source (17) and deliver it to the inner cavity of the control cylinder (32).

2. The dual-plane coupling lens defect detection device based on image recognition according to claim 1, characterized in that: The heat exchange mechanism includes a flow hood (14), a temperature control plate (18), a flow guide fan (19), a mounting box (20), and a sealing cover (15). The mounting box (20) is fixedly installed inside the mounting platform (1), the light source (17) is fixedly installed on the inner wall of the mounting box (20), the flow hood (14) is fixedly installed on the outer wall of the mounting box (20), and the guide fan (19) is fixedly installed at one end of the flow hood (14). The temperature control plate (18) has a cold end and a hot end. The cold end of the temperature control plate (18) is located in the inner cavity of the flow cover (14). The sealing cover (15) is fixedly installed on the outer wall of the flow cover (14). The hot end of the temperature control plate (18) is located in the inner cavity of the sealing cover (15). The inner cavity of the control cylinder (32) is connected to the inner cavity of the sealing cover (15) through a heat insulation pipe.

3. The dual-plane coupling lens defect detection device based on image recognition according to claim 2, characterized in that: The mounting platform (1) is slidably provided with a platform (2) at its upper end. The collector (3) is fixedly installed on the outer wall of the platform (2). A light shield (4) is fixedly installed on the outer wall of the collector (3). A control motor (16) is fixedly installed on the outer wall of the mounting platform (1), and the output shaft of the control motor (16) is fixedly connected to the center position of the axial end of the bearing plate (12). The air inlet end of the enclosure (15) is detachably fitted with a filter (13); The outer wall of the mounting platform (1) is provided with a mounting plate (6), and the mounting cylinder (8), wiping strip (24) and blow nozzle (5) can all be detachably installed on the upper surface of the mounting plate (6).

4. The image recognition-based dual-plane coupling lens defect detection device according to claim 3, characterized in that: A pressure boosting cylinder (23) is elastically installed on the outer wall of the mounting cylinder (8). A transfer pipe (22) connected to the inner cavity of the storage cylinder (7) is fixedly installed on the outer wall of the pressure boosting cylinder (23). A guide pipe (25) is fixedly installed in the inner cavity of the mounting cylinder (8). A sealing ring (27) is fixedly installed on the outer wall of the guide pipe (25). The outer wall of the sealing ring (27) slides against the inner wall of the pressure boosting cylinder (23). A flow-blocking ring (29) is fixedly installed on the inner wall of the flow-blocking pipe (25). A conical plug (28) is provided on the inner wall of the flow-blocking ring (29). A support frame (30) is fixedly installed on the inner wall of the flow-blocking pipe (25). The upper end face of the support frame (30) is connected to the bottom face of the conical plug (28) through an elastic element. A conical platform (31) is fixedly installed on the bottom surface of the support frame (30), and a conical gap is reserved between the outer wall of the conical platform (31) and the inner wall of the guide pipe (25) for the cleaning liquid to pass through. The control cylinder (32) has a unidirectional air inlet pipe and an exhaust pipe. The air inlet pipe of the control cylinder (32) is connected to the inner cavity of the sealing cover (15). A spiral tube (21) is fixedly installed in the inner cavity of the storage cylinder (7). One end of the spiral tube (21) is connected to the exhaust pipe of the control cylinder (32), and the other end of the spiral tube (21) is connected to the inner cavity of the spray hood (5).

5. The dual-plane coupling lens defect detection device based on image recognition according to claim 4, characterized in that: A support plate (26) is fixedly installed on the outer wall of the mounting cylinder (8), and a control arm (10) is elastically installed on the outer wall of the support plate (26). A waist-shaped groove is opened on the side wall of the control arm (10), and a pin is provided on the outer wall of the booster cylinder (23) to slide with the waist-shaped groove. The upper end face of the bearing plate (12) is fixedly installed with a transmission boss (11) for pressing the control arm (10). Multiple transmission bosses (11) are uniformly arranged in a ring along the axis of the bearing plate (12), and the position of the transmission bosses (11) corresponds to the position of the workpiece to be tested.

6. The dual-plane coupling lens defect detection device based on image recognition according to claim 5, characterized in that: An installation arm (9) is fixedly installed on the outer wall of the installation platform (1), the storage cylinder (7) is detachably installed on the outer wall of the installation arm (9), the installation plate (6) is fixedly connected to the outer wall of the installation arm (9), and the outer wall of the control cylinder (32) is fixedly connected to the outer wall of the installation arm (9). The outer wall of the mounting arm (9) rotates the transmission crankshaft (33), and the transmission crankshaft (33) is controlled to rotate by the control motor (16). The inner cavity of the control cylinder (32) is slidably fitted with a control plug (35), and the outer wall of the transmission crankshaft (33) is rotatably fitted with a transmission connecting rod (34). The other end of the transmission connecting rod (34) is rotatably connected to the outer wall of the control plug (35).

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