A contact lens dry sheet inspection apparatus

Abstract

The utility model relates to contact lens automation production technical field, concretely is a kind of contact lens dry piece detection equipment, including the carousel mechanism of driving multiple lens table movement, along carousel mechanism rotation direction and be set in carousel mechanism side part multiple lens cleaning worker station, lens positioning mechanism, multiple detection worker station, blanking mechanism and table cleaning worker station;Each lens cleaning worker station is correspondingly provided with feeding station;The present contact lens dry piece detection equipment adopts automation process flow, full-process closed-loop control, reduces artificial interference, improves detection accuracy, avoids foreign matter interference, realizes the efficient, high-precision full inspection of contact lens dry piece.

Description

Technical Field

[0001] This utility model relates to the field of automated production technology of contact lenses, specifically to a dry contact lens testing device. Background Technology

[0002] During the production of contact lenses, defects such as missing material, air bubbles, and scratches may occur after demolding. Before proceeding with subsequent production processes, defect detection is required, and defective products are marked after detection.

[0003] Although some automated dry film inspection technologies exist, the following shortcomings remain: overall inspection efficiency is limited, manual sampling is inefficient (≤800 pieces / hour) and cannot achieve 100% inspection; inspection accuracy is insufficient, single-light source imaging easily misses defects such as edge defects and bubbles (missed detection rate >5%); foreign object interference is severe: traditional brush dust removal leaves residual dust particles >50μm, leading to an increased false judgment rate; poor equipment compatibility: linear layout process connection delays, overall equipment efficiency (OEE) <70%.

[0004] Therefore, in order to meet market demands, a solution is urgently needed. Utility Model Content

[0005] The purpose of this invention is to provide a dry contact lens testing device that achieves a fully automated process, closed-loop control throughout the process, reduces human interference, improves testing accuracy, avoids interference from foreign objects, and enables efficient and high-precision full inspection of dry contact lenses.

[0006] To achieve the above objectives, the present invention provides the following technical solution.

[0007] A dry contact lens inspection device includes a turntable mechanism that drives multiple lens platforms to move, multiple lens cleaning stations, a lens positioning mechanism, a multi-inspection station, a feeding mechanism, and a platform cleaning station arranged along the rotation direction of the turntable mechanism and on the side of the turntable mechanism; each of the lens cleaning stations is correspondingly provided with a feeding station; During dry lens inspection, the loading station transports the lenses to be inspected to an empty lens stage. A turntable mechanism drives the lens stage carrying the lenses to be inspected through a lens cleaning station, a lens positioning mechanism, and a multiple inspection station. The lens cleaning station cleans and removes dust from the lenses loaded onto the lens stage. The lens positioning mechanism pushes the cleaned lenses on the lens stage to align and position the lenses to be inspected. The multiple inspection station visually inspects the aligned lenses on the lens stage to complete the lens inspection. The turntable mechanism then moves the lens stage carrying the inspected lenses to the unloading mechanism, which removes qualified lenses from the lens stage to complete the unloading. The turntable mechanism then moves the unloaded lens stage to the stage cleaning station, where it removes unqualified lenses and loose dust from the lens stage. Finally, the turntable mechanism moves the cleaned lens stage to the lens cleaning station, where it awaits the loading station to transport the lenses to be inspected to the lens stage.

[0008] Furthermore, the loading station includes a loading and transport mechanism and a loading and inspection mechanism; the loading and transport mechanism picks up the lens to be inspected from the storage area and, after pre-inspection by the loading and inspection mechanism, transports the lens to be inspected to the lens carrier to complete the loading.

[0009] Furthermore, the lens cleaning station includes a dust removal mechanism and a lens flipping mechanism; the lens to be tested is transported to the empty lens platform of the dust removal mechanism, the dust removal mechanism performs electrostatic dust removal on one end face of the lens, and the lens flipping mechanism adsorbs and flips the lens on the lens platform that has been dusted on one side so that the dust removal mechanism can perform electrostatic dust removal on the other end face of the lens.

[0010] Furthermore, the lens flipping mechanism includes a lens flipping lifting device, a flipping device driven and connected to the execution end of the lens flipping lifting device, and a flipping frame driven and connected to the execution end of the flipping device; the flipping frame is provided with multiple suction cups; during flipping, the lens flipping lifting device and the flipping device drive the flipping frame to move, and the flipping frame adsorbs and flips the lens so that the dust removal mechanism can remove dust from the flipped lens.

[0011] Furthermore, the lens positioning mechanism includes a positioning lifting drive device, a positioning bracket driven and connected to the execution end of the positioning lifting drive device, a positioning clamping drive device mounted on the positioning bracket, and a positioning mold driven and connected to the execution end of the positioning clamping drive device. The turntable mechanism moves the lens stage carrying the cleaned lens to the positioning and lifting drive device. The positioning and lifting drive device drives the positioning bracket to move so that the positioning mold abuts against the lens stage. The positioning and clamping drive device drives the positioning mold to move to push and position the lens.

[0012] Furthermore, the positioning mold is a set of positioning strips, and the positioning strips have lens grooves that match the shape of the lens.

[0013] Furthermore, the multi-detection workstation includes multiple camera driving devices, each of which is equipped with a supplementary lighting mechanism, and the execution end of each camera driving device drives and connects to the detection camera. The turntable mechanism moves the lens stage carrying the sorted lenses between the camera drive and the supplementary lighting mechanism. The supplementary lighting mechanism provides supplementary lighting to the lenses on the lens stage, and the camera drive drives the detection camera to move to complete the lens detection.

[0014] Furthermore, the platform cleaning station includes a dust cleaning mechanism and a vibration cleaning mechanism; The turntable mechanism moves the unloaded lens stage through the dust cleaning mechanism and the vibration cleaning mechanism in sequence. The dust cleaning mechanism removes unqualified lenses and large particles of dust from the lens stage, while the vibration cleaning mechanism uses high-frequency vibration to remove fine dust adhering to the lens stage.

[0015] Furthermore, the dust cleaning mechanism includes a brush body displacement device, a brush body lifting device driven and connected to the execution end of the brush body displacement device, and a cleaning brush driven and connected to the execution end of the brush body lifting device. The turntable mechanism moves the unloaded lens stage to the brush displacement device. The brush displacement device and the brush lifting device drive the cleaning brush to come into contact with and sweep across the lens stage to remove unqualified lenses and dust from the lens stage.

[0016] Furthermore, the vibration cleaning mechanism includes a vibration drive device and a dry ultrasonic dust collector; The turntable mechanism moves the unloaded lens stage past the vibration drive device, which drives the dry ultrasonic dust collector to sweep across the surface of the lens stage to remove the attached fine dust.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: In practical use, the turntable mechanism drives the lens stage to achieve rapid circular movement and rotation of the lenses, reducing the space occupied by the equipment, shrinking the overall size of the equipment, and improving testing efficiency. The lens cleaning station cleans the lenses to be tested to improve the testing quality of dry lenses and prevent debris and dust from affecting the test results. The lens positioning mechanism arranges the lenses on the lens stage to prevent the lens cleaning process from changing the placement of the lenses, further reducing the influencing factors in the lens testing operation and improving the accuracy of lens testing. The stage cleaning station cleans the lens stage after unloading to prevent the tested lenses and dust and debris from affecting the lenses to be loaded, reducing the interference of the carrier on the lenses and improving the accuracy of lens testing. Overall, it improves the efficiency of dry contact lens testing, improves the accuracy of quality inspection operations, and increases the yield of finished contact lenses. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the planar structure of the present invention; Figure 2 This is a schematic diagram of the planar structure from another perspective of the present invention; Figure 3 This is a three-dimensional structural diagram of the present invention; Figure 4 This is a three-dimensional structural diagram of the lens flipping mechanism in this utility model; Figure 5 This is a schematic diagram of the planar structure of the lens positioning mechanism in this utility model; Figure 6 This is a three-dimensional structural diagram of the multi-detection station in this utility model; Figure 7 This is a three-dimensional structural diagram of the cleaning station in this utility model. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] refer to Figure 1-7 As shown, a dry contact lens testing device includes a turntable mechanism 200 that drives multiple lens stages 800 to move, multiple lens cleaning stations 500, a lens positioning mechanism 400, a multi-detection station 300, a feeding mechanism 600, and a stage cleaning station 700 disposed along the rotation direction of the turntable mechanism 200 and on the side of the turntable mechanism 200; each of the lens cleaning stations 500 is correspondingly provided with a feeding station 100; During dry lens inspection, the loading station 100 transports the lenses to be inspected to the empty lens stage 800. The turntable mechanism 200 drives the lens stage 800 carrying the lenses to be inspected through the lens cleaning station 500, the lens positioning mechanism 400, and the multiple inspection station 300. The lens cleaning station 500 cleans the lenses loaded onto the lens stage 800, removing dust. The lens positioning mechanism 400 pushes the cleaned lenses on the lens stage 800 to arrange and position the lenses to be inspected. The multiple inspection station 300 performs visual inspection on the arranged lenses on the lens stage 800 to complete the lens inspection. Lens inspection; the turntable mechanism 200 drives the lens stage 800 carrying the inspected lenses to the unloading mechanism 600, and the unloading mechanism 600 removes the lenses from the lens stage 800 to complete the unloading; the turntable mechanism 200 drives the empty lens stage 800 to the stage cleaning station 700, and the stage cleaning station 700 removes the inspected defective lenses and floating dust and debris from the lens stage 800; the turntable mechanism 200 drives the cleaned lens stage 800 to the lens cleaning station 500, waiting for the loading station 100 to transport the lenses to be inspected to the lens stage 800.

[0021] Specifically, the turntable mechanism 200 can be a motor-controlled circular turntable, and the unloading mechanism 600 can be a four-axis robot equipped with a flexible suction head installed at the end to complete the unloading and handling of lenses.

[0022] This dry contact lens testing equipment utilizes a rotary mechanism 200 to drive the lens stage 800, enabling rapid circumferential movement and rotation of the lenses. This reduces the equipment's footprint, overall size, and testing efficiency. A lens cleaning station 500 cleans the lenses to be tested, improving the quality of dry lens testing and preventing debris and dust from affecting the results. A lens positioning mechanism 400 arranges the lenses on the lens stage 800, preventing the cleaning process from altering their placement and further reducing influencing factors in lens testing, thus improving accuracy. A stage cleaning station 700 cleans the already loaded lens stage 800, preventing defective lenses and dust from affecting lenses about to be loaded, reducing interference and improving testing accuracy. Overall, this equipment improves the efficiency of dry contact lens testing, enhances the accuracy of quality control, and increases the yield of finished contact lenses.

[0023] This dry contact lens testing equipment features a fully automated process and closed-loop control throughout the entire process, reducing human interference, improving testing accuracy, and avoiding interference from foreign objects, thus achieving efficient and high-precision full inspection of dry contact lenses.

[0024] In this embodiment, the loading station 100 includes a loading and conveying mechanism 110 and a loading and inspection mechanism 120. The loading and conveying mechanism 110 picks up the lens to be inspected from the storage area and, after pre-inspection at the loading and inspection mechanism 120, transports the lens to be inspected to the lens stage 800 to complete the loading.

[0025] Specifically, the loading and handling mechanism 110 can use a four-axis robot equipped with a flexible suction head installed at the end to realize the handling of lenses; the loading and inspection mechanism 120 can use a visual inspection camera to obtain images of the lenses to complete the inspection; visual inspection is integrated in the loading stage to mark, inspect or count the products, improve the automation and digitization of the loading action, and can also perform pre-inspection of lenses to improve lens inspection efficiency.

[0026] In this embodiment, the loading and inspection mechanism 120 is further provided with a loading supplementary lighting device 121 to provide supplementary lighting for the lenses transported by the loading and conveying mechanism 110. Specifically, the loading supplementary lighting device 121 can be a supplementary lighting strip, which facilitates supplementary lighting on the lower end surface of the lenses after they are adsorbed by the loading and conveying mechanism 110, thereby improving the quality of visual inspection images and increasing inspection efficiency.

[0027] In this embodiment, the lens cleaning station 500 includes a dust removal mechanism 510 and a lens flipping mechanism 520. The lens to be tested is transported to the empty lens platform 800 of the dust removal mechanism 510. The dust removal mechanism 510 performs electrostatic dust removal on one end face of the lens. The lens flipping mechanism 520 adsorbs and flips the lens on the lens platform 800 that has been dusted on one side so that the dust removal mechanism 510 can perform electrostatic dust removal on the other end face of the lens. Specifically, the dust removal mechanism 510 can be an electrostatic dust collector; after the dust removal mechanism 510 performs electrostatic dust removal on the lens on the lens stage, the lens flipping mechanism 520 adsorbs and flips the lens, and the dust removal mechanism 510 performs dust removal on the other side of the lens, so that both ends of the lens can be electrostatically dusted, avoiding the dust on the lens from affecting the test results.

[0028] In this embodiment, the lens flipping mechanism 520 includes a lens flipping lifting device 521, a flipping device 522 driven and connected to the execution end of the lens flipping lifting device 521, and a flipping frame 523 driven and connected to the execution end of the flipping device 522. The flipping frame 523 is provided with multiple suction cups. When flipping, the lens flipping lifting device 521 and the flipping device 522 drive the flipping frame 523 to move, and the flipping frame 523 adsorbs and flips the lens so that the dust removal mechanism 510 can remove dust from the flipped lens.

[0029] Specifically, the mirror lifting device 521 can be a lifting motor assembly, and the flipping device 522 can be a rotary cylinder. The mirror lifting device 521 and the flipping device 522 work together to drive the flipping frame 523 to move to the lens stage 800, adsorb and flip the lens, wait for the dust removal mechanism 510 to remove dust, and then flip it and put it back on the lens stage 800. By adding the lens flipping mechanism 520, the other end of the lens, which cannot be covered by conventional dust removal methods, can also be dusted, further improving the accuracy and precision of the inspection.

[0030] In this embodiment, the lens positioning mechanism 400 includes a positioning lifting drive device 410, a positioning bracket 420 drivenly connected to the execution end of the positioning lifting drive device 410, a positioning clamping drive device 430 mounted on the positioning bracket 420, and a positioning mold 440 drivenly connected to the execution end of the positioning clamping drive device 430. The turntable mechanism 200 moves the lens platform 800 carrying the cleaned lens to the positioning lifting drive device 410. The positioning lifting drive device 410 drives the positioning bracket 420 to move so that the positioning mold 440 abuts against the lens platform 800. The positioning clamping drive device 430 drives the positioning mold 440 to move so as to push and position the lens.

[0031] Specifically, the positioning lifting drive device 410 can be a linear motor module, and the positioning clamping drive device 430 can be an electric gripper cylinder. During positioning, the positioning mold 440 abuts against the lens stage 800, which can prevent the lens from flying out during positioning and sorting, thereby improving the success rate of positioning. It provides a unified position for lens inspection, further improving the efficiency and accuracy of inspection operations.

[0032] In this embodiment, the positioning mold 440 is a set of positioning strips, and the positioning strips have lens grooves 441 that match the shape of the lens. Specifically, the positioning mold 440 is detachably installed on the execution end of the positioning clamping drive device 430 to ensure quick replacement and improve the adaptability and expandability of the device to various types of lenses.

[0033] In this embodiment, the multi-detection station 300 includes multiple camera driving devices 310, and each camera driving device 310 is correspondingly provided with a supplementary lighting mechanism 330. The execution end of each camera driving device 310 drives and connects to the detection camera 320. The turntable mechanism 200 moves the lens stage 800 carrying the sorted lens to between the camera driving device 310 and the supplementary lighting mechanism 330. The supplementary lighting mechanism 330 provides supplementary lighting to the lens on the lens stage 800. The camera driving device 310 drives the detection camera 320 to move to complete the lens detection.

[0034] Specifically, the multi-inspection station 300 can use three sets of cameras for inspection, and three sets of supplementary lighting mechanisms 330 provide supplementary lighting with different light intensities. The brightness and darkness scenes can be customized to ensure that the inspection camera 320 can capture various types of defects such as notches, bubbles, scratches and foreign objects. The camera drive device 310 can drive the inspection camera 320 to perform reciprocating scanning and multiple visual inspections to improve the accuracy and efficiency of lens inspection.

[0035] Specifically, the turntable mechanism 200 moves the lens stage 800 carrying the tested lenses to the unloading mechanism 600, whereby the unloading mechanism 600 removes the qualified lenses from the lens stage to complete the unloading process.

[0036] In this embodiment, the lens carrier cleaning station 700 includes a dust cleaning mechanism 710 and a vibration cleaning mechanism 720. The turntable mechanism 200 moves the unloaded lens carrier 800 through the dust cleaning mechanism 710 and the vibration cleaning mechanism 720 in sequence. The dust cleaning mechanism 710 removes unqualified lenses and large particles of dust from the lens carrier 800, while the vibration cleaning mechanism 720 uses high-frequency vibration to remove fine dust adhering to the lens carrier 800.

[0037] Specifically, the stage cleaning station 700 performs double cleaning on the unloaded lens stage 800 to keep the surface of the lens stage 800 clean, preventing debris and dust from damaging the lenses to be loaded, thereby improving the overall yield of the product.

[0038] In this embodiment, the dust cleaning mechanism 710 includes a brush body displacement device 711, a brush body lifting device 712 driven and connected to the execution end of the brush body displacement device 711, and a cleaning brush 713 driven and connected to the execution end of the brush body lifting device 712. The turntable mechanism 200 moves the unloaded lens platform 800 to the brush body displacement device 711. The brush body displacement device 711 and the brush body lifting device 712 drive the cleaning brush 713 to abut and sweep across the lens platform 800 to remove unqualified lenses and dust from the lens platform 800.

[0039] Specifically, the brush body displacement device 711 can be a rodless cylinder, and the brush body lifting device 712 can be a lifting electric cylinder; driven by the brush body displacement device 711 and the brush body lifting device 712, the cleaning brush 713 sweeps away the unqualified lenses, large particles of debris and foreign matter and floating dust above the lens stage 800 to clean them, so as to avoid damaging the lenses.

[0040] In this embodiment, the vibration cleaning mechanism 720 includes a vibration drive device 722 and a dry ultrasonic dust collector 721; the turntable mechanism 200 moves the unloaded lens stage 800 past the vibration drive device 722, and the vibration drive device 722 drives the dry ultrasonic dust collector 721 to sweep across the surface of the lens stage 800 to remove the attached fine dust.

[0041] Specifically, the vibration drive device 722 can be a linear module, and the dry ultrasonic dust collector 721 is suspended and installed at the execution end of the vibration drive device 722. The dry ultrasonic dust collector 721 is as close as possible to the lens stage 800 so that the execution end of the dry ultrasonic dust collector 721 can act on the lens stage 800.

[0042] This equipment achieves technological breakthroughs through the coordinated operation of multiple core modules; The four-axis robot feeding station (capacity breakthrough module) constructs a high-speed feeding system; three four-axis robots work together (repeat positioning accuracy ±0.005mm), one of which is a 600 unloading mechanism responsible for unloading, and two of which are 110 loading and transporting mechanisms responsible for loading; the robot end is integrated with a flexible suction head (force control sensitivity ±0.1N) to adaptively pick up lenses with different base curves (8.4~8.8mm).

[0043] The rotary inspection station (precision assurance module) features a multi-station rotary layout; the rotary table is equipped with 12 lens stages and 800 stations, with adjustable rotation speed (10-30rpm) and positioning accuracy of ±0.01°; the inspection station integrates three sets of movable inspection cameras for bright and dark fields. Bright field inspection uses a 5-megapixel high-speed industrial camera (23fps) + coaxial light source to detect surface scratches and foreign objects; dark field inspection uses a 5-megapixel line scan camera (5MP resolution) + low-angle ring light to capture edge gaps and bubbles; The platform cleaning station 700 is equipped with a composite dust removal system; the vibration cleaning mechanism (720) uses 40kHz high-frequency vibration to peel off particles attached to the surface of the lens detection position (removal rate ≥99.5%); the floating dust cleaning mechanism 710 uses a cleaning brush to quickly remove foreign objects. This equipment achieves the following breakthroughs: Efficiency is improved, with a capacity of 4200 wafers / hour (5 times higher than traditional methods), and an overall equipment efficiency (OEE) of 96.3%. The rotary layout reduces waiting time between processes, shortening the production cycle to 0.85 seconds per piece.

[0044] The detection accuracy has been improved. Cross-image imaging of bright and dark fields enables the identification of defects down to a minimum size of 0.008 mm2 (equivalent to the cross-section of a human hair). The intelligent algorithm achieves an over-detection rate of 1.2% and a false negative rate of 0.7%, which is 60% higher than the industry standard.

[0045] Cleanliness is guaranteed; the composite dust removal system ensures that the particle concentration on the workbench is ≤100 particles / m3 (ISO Class 4), and the false detection rate of foreign objects is reduced by 90%.

[0046] Flexible production supports rapid lens changeover for all lens sizes from 13.8 to 14.5 mm in diameter (changeover time < 5 minutes).

[0047] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the scope defined by the spirit of this utility model.

Claims

1. A contact lens dry lot detection apparatus, characterized by, The system includes a turntable mechanism (200) that drives multiple lens stages (800) to move, multiple lens cleaning stations (500) along the rotation direction of the turntable mechanism (200) and disposed on the side of the turntable mechanism (200), a lens positioning mechanism (400), a multi-inspection station (300), a feeding mechanism (600), and a stage cleaning station (700); each of the lens cleaning stations (500) is correspondingly provided with a feeding station (100). During dry lens inspection, the loading station (100) transports the lens to be inspected to an empty lens stage (800); the turntable mechanism (200) drives the lens stage (800) carrying the lens to be inspected to pass sequentially through the lens cleaning station (500), the lens positioning mechanism (400), and the multiple inspection station (300). The lens cleaning station (500) cleans the lenses loaded onto the lens stage (800) by removing dust. The lens positioning mechanism (400) pushes the cleaned lenses on the lens stage (800) to arrange and position the lenses to be inspected. The multiple inspection station (300) visually inspects the arranged lenses on the lens stage (800) to complete the lens inspection. The turntable mechanism (200) drives the lens stage (800) carrying the tested lenses to move to the unloading mechanism (600), and the unloading mechanism (600) removes the qualified lenses from the lens stage (800) to complete the unloading. The turntable mechanism (200) drives the unloaded lens stage (800) to move to the stage cleaning station (700), and the stage cleaning station (700) removes the unqualified lenses and floating dust and debris from the lens stage (800). The turntable mechanism (200) drives the cleaned lens stage (800) to move to the lens cleaning station (500), waiting for the loading station (100) to transport the lenses to be tested to the lens stage (800).

2. The contact lens dry lot inspection apparatus of claim 1, wherein The loading station (100) includes a loading and transport mechanism (110) and a loading and inspection mechanism (120). The loading and transport mechanism (110) picks up the lens to be inspected from the storage area and conducts a pre-inspection at the loading and inspection mechanism (120). Then, the loading and transport mechanism (110) transports the lens to be inspected to the lens carrier (800) to complete the loading.

3. The contact lens dry lot inspection apparatus of claim 1, wherein The lens cleaning station (500) includes a dust removal mechanism (510) and a lens flipping mechanism (520). The lens to be tested is transported to the empty lens platform (800) of the dust removal mechanism (510). The dust removal mechanism (510) performs electrostatic dust removal on one end face of the lens. The lens flipping mechanism (520) adsorbs and flips the lens on the lens platform (800) that has been dusted on one side so that the dust removal mechanism (510) performs electrostatic dust removal on the other end face of the lens.

4. The contact lens dry lot inspection apparatus of claim 3, wherein, The lens flipping mechanism (520) includes a lens flipping lifting device (521), a flipping device (522) driven and connected to the execution end of the lens flipping lifting device (521), and a flipping frame (523) driven and connected to the execution end of the flipping device (522); the flipping frame (523) is provided with multiple suction cups; When flipped, the flipping lifting device (521) and the flipping device (522) drive the flipping frame (523) to move. The flipping frame (523) adsorbs and flips the lens so that the dust removal mechanism (510) can remove dust from the flipped lens.

5. The contact lens dry lot inspection apparatus of claim 1, wherein, The lens positioning mechanism (400) includes a positioning lifting drive device (410), a positioning bracket (420) driven and connected to the execution end of the positioning lifting drive device (410), a positioning clamping drive device (430) mounted on the positioning bracket (420), and a positioning mold (440) driven and connected to the execution end of the positioning clamping drive device (430). The turntable mechanism (200) moves the lens stage (800) carrying the cleaned lens to the positioning lifting drive device (410). The positioning lifting drive device (410) drives the positioning bracket (420) to move so that the positioning mold (440) abuts against the lens stage (800). The positioning clamping drive device (430) drives the positioning mold (440) to move to push and position the lens.

6. A contact lens dry lot inspection apparatus as claimed in claim 5, wherein, The positioning mold (440) is a set of positioning strips, and the positioning strips have lens grooves (441) that match the shape of the lens.

7. The contact lens dry lot inspection apparatus of claim 1, wherein The multi-detection workstation (300) includes multiple camera driving devices (310), each of the camera driving devices (310) is provided with a corresponding supplementary lighting mechanism (330), and the execution end of each camera driving device (310) drives and connects to the detection camera (320). The turntable mechanism (200) moves the lens stage (800) carrying the sorted lens to between the camera drive device (310) and the supplementary lighting mechanism (330). The supplementary lighting mechanism (330) provides supplementary lighting to the lens on the lens stage (800). The camera drive device (310) drives the inspection camera (320) to move to complete the lens inspection.

8. The contact lens dry lot inspection apparatus of claim 1, wherein, The platform cleaning station (700) includes a dust cleaning mechanism (710) and a vibration cleaning mechanism (720). The turntable mechanism (200) moves the unloaded lens stage (800) through the dust cleaning mechanism (710) and the vibration cleaning mechanism (720) in sequence. The dust cleaning mechanism (710) removes unqualified lenses and large particles of dust from the lens stage (800), while the vibration cleaning mechanism (720) removes fine dust adhering to the lens stage (800) by high-frequency vibration.

9. A contact lens dry lot inspection apparatus as claimed in claim 8, wherein, The dust cleaning mechanism (710) includes a brush body displacement device (711), a brush body lifting device (712) driven and connected to the execution end of the brush body displacement device (711), and a cleaning brush (713) driven and connected to the execution end of the brush body lifting device (712). The turntable mechanism (200) moves the unloaded lens stage (800) to the brush body displacement device (711). The brush body displacement device (711) and the brush body lifting device (712) drive the cleaning brush (713) to contact and sweep across the lens stage (800) to remove unqualified lenses and dust from the lens stage (800).

10. The contact lens dry lot inspection apparatus of claim 8, wherein, The vibration cleaning mechanism (720) includes a vibration drive device (722) and a dry ultrasonic dust collector (721). The turntable mechanism (200) moves the unloaded lens stage (800) past the vibration drive device (722), which drives the dry ultrasonic dust collector (721) to sweep across the surface of the lens stage (800) to remove the attached fine dust.

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