Efficient lens defect detection device

Abstract

The utility model discloses an efficient lens defect detection device which comprises a platform, and a transportation unit, a feeding unit, a cleaning unit, a detection unit, a dotting unit and a discharging unit which are all mounted on the platform, the X-direction pushing unit is used for synchronously pushing lens carrying discs on the feeding unit, the cleaning unit, the detecting unit, the dotting unit and the discharging unit to move in the X direction to enter the next station; the feeding unit is used for loading the lens carrying disc and is in butt joint with the cleaning unit for feeding; the cleaning unit is used for dedusting the lens carrying disc and is in butt joint with the detection unit; the detection unit comprises a horizontal moving carrying table, a first detection unit and a second detection unit and is used for synchronously driving the two lens carrying discs to move in the X direction and the Y direction so as to complete image acquisition of all lenses in the corresponding lens carrying discs; the dotting unit is used for marking the lenses in the lens carrying disc; and the discharging unit is used for collecting the marked lens carrying discs to complete discharging. The device is high in detection efficiency and accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of lens inspection technology, specifically relating to a high-efficiency lens defect detection device. Background Technology

[0002] As market demands for the performance of lens components in electronic devices gradually increase, the manufacturing and testing requirements for the number of lenses and their optical performance are also rising. This leads to increasingly stringent requirements for lens defect detection, with more and more complex testing items. Major lens defects include scratches, abrasions, speckles, bright spots, broken edges, bubbles, and foreign matter.

[0003] In response to these issues, manual inspection methods are no longer sufficient in terms of performance, efficiency, and stability, and manual handling of lenses can easily cause secondary contamination. Secondly, external dust can further affect the inspection results. For example, in actual inspection, defects such as speckles and bright spots have similar imaging effects to dust. Therefore, when inspecting lens quality, it is necessary to eliminate interference from dust to ensure accurate identification and detection of actual quality defects on the lens surface. Furthermore, existing automated lens inspection equipment, such as dust removal and inspection, typically requires separate machines, which reduces the accuracy of lens inspection and product production efficiency. In addition, existing product handling components on the market usually require multiple conveyor lines to connect for different machine operations, which is not conducive to reducing costs and failure rates. Therefore, a high-efficiency lens defect detection device is proposed. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned problems by proposing a highly efficient lens defect detection device with high detection efficiency and accuracy.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] This utility model proposes a high-efficiency lens defect detection device, comprising a platform, and a transport unit, a loading unit, a cleaning unit, a detection unit, a marking unit, and a unloading unit, all mounted on the platform, wherein:

[0007] The transport unit includes a first X-axis motion unit, a first mounting plate, a first Y-axis motion unit, and a pushing unit. The first X-axis motion unit is connected to the platform and is used to drive the first mounting plate to move in the X-axis direction. The first Y-axis motion unit is connected to the first mounting plate and is used to drive the pushing unit to move in the Y-axis direction. The pushing unit is used to synchronously push the lens carriers on the loading unit, cleaning unit, detection unit, marking unit, and unloading unit to move in the X-axis direction to the next station under the drive of the first X-axis motion unit. The lens carriers are used to place several lenses.

[0008] The loading unit is used to load the lens trays and connect to the cleaning unit for loading.

[0009] The cleaning unit is used to remove dust from the lens carrier and connect it to the testing unit;

[0010] The detection unit includes a horizontal moving stage, a first detection unit and a second detection unit. The first detection unit and the second detection unit are arranged side by side on the platform and acquire images of lenses in different lens carriers one by one. The horizontal moving stage is connected to the platform and is used to synchronously drive the two lens carriers to move in the X and Y directions to complete the image acquisition of all lenses in the corresponding lens carrier.

[0011] The dot unit is used to mark the lenses in the lens carrier.

[0012] The unloading unit is used to collect the marked lens trays to complete the unloading process.

[0013] Preferably, the pushing unit includes a first push plate and a second push plate, and the first Y-axis motion unit includes two second cylinders arranged side by side. The second cylinders correspond one-to-one with the first push plate and the second push plate and synchronously drive the corresponding push plate to perform Y-axis motion. The first push plate and the second push plate are respectively provided with at least one limiting groove for accommodating the lens carrier of the corresponding work station.

[0014] Preferably, the limiting groove is also provided with several springs. When the second cylinder drives the corresponding push plate to move in the Y direction, the springs can be pressed against or moved away from the lens carrier plate at the corresponding work station to release it.

[0015] Preferably, the feeding unit includes a first mounting base, a first loading unit, a first bearing platform, a first Z-axis motion unit, and a first support unit. The first mounting base is connected to the platform, and the first bearing platform and the first Z-axis motion unit are both connected to the first mounting base or the platform. The first loading unit includes a first fixed plate and several baffles. The first fixed plate is horizontally mounted on the first mounting base. The baffles are cylindrical and are arranged in pairs at the four corners of the first fixed plate. Each pair of baffles is used to limit the movement of the lens carrier by abutting against both sides. The first bearing platform includes a second mounting plate and two first sliding plates symmetrically arranged on the second mounting plate. The second mounting plate is horizontally mounted on the first mounting base. Both the first fixed plate and the second mounting plate have first through holes for the lens carrier to pass through. The first fixed plate also has several first waist-shaped grooves on adjacent sides. The first waist-shaped grooves are perpendicular to each other, and the stop posts are connected to the first fixed plate by screws passing through the first waist-shaped grooves. The first support unit includes symmetrically arranged first support units. The first support unit includes a first cylinder and a stop block. The first cylinder is installed on the first fixed plate and is used to drive the stop block to extend and retract, thereby lifting or releasing the bottom lens tray on the first loading unit. When loading, the first Z-axis motion unit rises along the Z-axis to lift the bottom lens tray on the first loading unit. The first cylinder drives the stop block to retract. The bottom lens tray moves down along the Z-axis by the first Z-axis motion unit by the height of one lens tray. The first cylinder drives the stop block to extend. The first Z-axis motion unit continues to move down to place the bottom lens tray on the first slide plate. The lens tray on the first slide plate is transported to the cleaning unit by the transport unit.

[0016] Preferably, the unloading unit includes a first mounting base, a first loading unit, a first bearing platform, a first Z-axis motion unit, and a second support unit. The first mounting base is connected to the platform, and the first bearing platform and the first Z-axis motion unit are both connected to the first mounting base or the platform. The first loading unit includes a first fixed plate and several baffles. The first fixed plate is horizontally mounted on the first mounting base. The baffles are cylindrical and are arranged in pairs at the four corners of the first fixed plate. Each pair of baffles is used to limit the movement of the lens carrier by abutting against both sides. The first bearing platform includes a second mounting plate and two first sliding plates symmetrically arranged on the second mounting plate. The second mounting plate is horizontally mounted on the first mounting base. Both the first fixed plate and the second mounting plate have... The first through hole for the lens tray to pass through is provided. The first fixed plate is also provided with several first waist-shaped grooves, and the first waist-shaped grooves on adjacent sides are perpendicular to each other. The stop posts are connected to the first fixed plate one by one through screws passing through the first waist-shaped grooves. The second support unit includes symmetrically arranged second support units. The second support unit includes a fixed plate and a rotating plate that are hinged to each other. The fixed plate is installed on the first fixed plate. When the material is unloaded, the marked lens tray is transported to the first slide plate of the first support platform. The first Z-axis motion unit rises along the Z-axis to lift the lens tray to the first loading unit. Then the first Z-axis motion unit moves downward along the Z-axis. The lens tray automatically falls onto the rotating plate under the action of gravity to complete the collection.

[0017] Preferably, the first loading unit further includes several adjusting blocks that correspond one-to-one with the baffles. The baffles are vertically mounted on the first fixed plate through the adjusting blocks. The adjusting blocks are provided with a second through hole and a second waist-shaped groove. The second waist-shaped groove is parallel to the corresponding first waist-shaped groove. The first sliding plate is an L-shaped plate.

[0018] Preferably, the cleaning unit includes a first lifting unit and a dust collection box. The first lifting unit includes a second mounting base, a second support platform, and a second Z-axis motion unit. The second mounting base is connected to the platform. The second Z-axis motion unit is connected to the second mounting base or the platform and is used to drive the second support platform to move in the Z-axis direction. The dust collection box is connected to the platform and is used to clean the lens tray on the second support platform. The dust collection box is an ion dust collection box.

[0019] Preferably, the horizontal moving stage includes a bidirectional motion unit, a third support platform, and two clamping units. The bidirectional motion unit is connected to the platform and drives the third support platform to move in the X and Y directions. The third support platform is used to place two lens carriers side by side. The two clamping units are installed on the third support platform and correspond one-to-one with the lens carriers to clamp or release the lens carriers. The first detection unit includes a first adjustment seat, a first camera, a first light source, a second light source, a second camera, and a second adjustment seat. The first camera, the first light source, the second light source, and the second camera are arranged sequentially along the Z direction and their optical axes are coaxial. The first camera and the first light source are connected to the platform through the first adjustment seat, and the second light source and the second... The camera is connected to the platform via the second adjustment seat. The first and second light sources are annular light sources. The first and second cameras respectively acquire images of the lenses on the lens carrier plate near the cleaning unit on the third carrier platform. The second detection unit includes a third adjustment seat, a third light source, a fourth light source, a third camera, and a fourth adjustment seat. The third light source, the fourth light source, and the third camera are arranged sequentially along the Z direction and are coaxial. The third light source is connected to the platform via the third adjustment seat, and the fourth light source and the third camera are connected to the platform via the fourth adjustment seat. The third light source is a surface light source, and the fourth light source is an annular light source. The third camera acquires images of the lenses on the lens carrier plate away from the cleaning unit on the third carrier platform.

[0020] Preferably, the first and third adjusting seats are each provided with a plurality of third waist-shaped grooves for adjusting movement in the X, Y and Z directions, and the second and fourth adjusting seats are each provided with a plurality of fourth waist-shaped grooves for adjusting movement in the Y and Z directions.

[0021] Preferably, the marking unit includes a marking and positioning unit and a second lifting unit. The marking and positioning unit includes a third mounting base, a three-axis motion unit, and a marking pen. The third mounting base is connected to the platform. The three-axis motion unit is connected to the third mounting base and is used to drive the marking pen to move in the X, Y, and Z directions. The second lifting unit includes a fourth mounting base, a third Z-axis motion unit, a correction unit, and a fourth support platform. The fourth mounting base is connected to the platform. The third Z-axis motion unit is connected to the fourth mounting base or the platform and is used to drive the fourth support platform to move in the Z direction. The correction unit is connected to the fourth support platform and is used to realize the clamping, correction, or release of the lens carrier on the fourth support platform. The lens in the lens carrier on the fourth support platform is marked by the marking pen.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] This device synchronously moves the lens trays at the loading, cleaning, inspection, marking, and unloading stations via a transport unit, enabling sequential transport of the lens trays. It achieves multi-functionality in loading, cleaning, inspection, marking, and unloading, with a simple and reliable structure that significantly reduces product transportation costs and the failure rate of the transport unit. The size of the push plate notch can be easily changed to accommodate various lens tray sizes. The cleaning unit removes dust to prevent false detections, and the lifting of the support platforms on the cleaning and marking units facilitates synchronous collaboration between stations, preventing mutual interference and further improving work efficiency. The inspection unit captures images from two stations at multiple angles (three angles) to detect various appearance defects in the lenses. Combined with marking by the marking unit, the inspection is more accurate and highly integrated, contributing to structural miniaturization while ensuring stable operation of the inspection unit. It can automatically detect appearance defects in the entire tray of lenses, offering high stability and efficiency, and avoiding secondary contamination caused by manual lens handling, thus ensuring product yield. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the high-efficiency lens defect detection device of this utility model;

[0025] Figure 2 This is a top view of the high-efficiency lens defect detection device of this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the transportation unit of this utility model;

[0027] Figure 4 This is a schematic diagram of the feeding unit of this utility model;

[0028] Figure 5 This is a top view of the feeding unit of this utility model;

[0029] Figure 6 This is a rear view of the feeding unit of this utility model;

[0030] Figure 7 This is a schematic diagram of the assembly of the first loading unit and the first supporting unit of this utility model. Figure 1 ;

[0031] Figure 8 This is a schematic diagram of the assembly of the first loading unit and the first supporting unit of this utility model. Figure 2 ;

[0032] Figure 9 This utility model Figure 7 Enlarged view of a portion (I);

[0033] Figure 10 This is a schematic diagram of the material feeding unit of this utility model;

[0034] Figure 11 This is a top view of the feeding unit of this utility model;

[0035] Figure 12 This is a schematic diagram of the cleaning unit of this utility model;

[0036] Figure 13 This is a front view of the cleaning unit of this utility model;

[0037] Figure 14 This is a schematic diagram of the detection unit of this utility model;

[0038] Figure 15 This is a schematic diagram of the dot-marking unit of this utility model.

[0039] Explanation of reference numerals in the attached drawings: 1. Platform; 2. Transport unit; 3. Loading unit; 4. Cleaning unit; 5. Detection unit; 6. Marking unit; 7. Unloading unit; 8. Lens tray; 21. First X-axis motion unit; 22. First mounting plate; 23. First Y-axis motion unit; 24. First push plate; 25. Second push plate; 26. Spring; 31. First mounting base; 32. First loading unit; 33. First support platform; 34. First Z-axis motion unit; 35. First support unit; 321. First fixing plate; 322. Stop post; 323. Adjusting block; 321a. First waist-shaped groove; 331. Second mounting plate; 332. First sliding plate; 351. First cylinder; 352. Stop block; 41. First lifting unit; 42. Dust collection box; 411. Second mounting base; 412. Second support platform; 4 13. Second Z-axis motion unit; 51. Horizontal moving platform; 52. First detection unit; 53. Second detection unit; 511. Bidirectional motion unit; 512. Third support platform; 513. Clamping unit; 521. First adjustment seat; 522. First camera; 523. First light source; 524. Second light source; 525. Second camera; 526. Second adjustment seat; 531. Third adjustment seat; 532. Third light source; 533. Fourth light source; 534. Third camera; 535. Fourth adjustment seat; 61. Marking and positioning unit; 62. Second lifting unit; 611. Third mounting seat; 612. Three-axis motion unit; 613. Dotting pen; 621. Fourth mounting seat; 622. Third Z-axis motion unit; 623. Alignment unit; 624. Fourth support platform; 71. Second support unit. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] It should be noted that when a component is referred to as being "connected" to another component, it can be directly connected to the other component or there may be an intervening component. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application.

[0042] like Figures 1-15 As shown, a high-efficiency lens defect detection device includes a platform 1, and a transport unit 2, a loading unit 3, a cleaning unit 4, a detection unit 5, a marking unit 6, and a unloading unit 7, all mounted on the platform 1, wherein:

[0043] The transport unit 2 includes a first X-axis motion unit 21, a first mounting plate 22, a first Y-axis motion unit 23, and a pushing unit. The first X-axis motion unit 21 is connected to the platform 1 and is used to drive the first mounting plate 22 to move in the X-axis direction. The first Y-axis motion unit 23 is connected to the first mounting plate 22 and is used to drive the pushing unit to move in the Y-axis direction. The pushing unit is used to synchronously push the lens tray 8 on the loading unit 3, cleaning unit 4, detection unit 5, marking unit 6, and unloading unit 7 to move in the X-axis direction and enter the next station under the drive of the first X-axis motion unit 21. The lens tray 8 is used to place several lenses.

[0044] The loading unit 3 is used to load the lens carrier tray 8 and connect to the cleaning unit 4 for loading;

[0045] Cleaning unit 4 is used to remove dust from lens carrier tray 8 and connect it to detection unit 5;

[0046] The detection unit 5 includes a horizontal moving stage 51, a first detection unit 52 and a second detection unit 53. The first detection unit 52 and the second detection unit 53 are arranged side by side on the platform 1 and acquire images of the lenses in different lens carriers 8 one by one. The horizontal moving stage 51 is connected to the platform 1 and is used to synchronously drive the two lens carriers 8 to move in the X and Y directions to complete the image acquisition of all lenses in the corresponding lens carrier 8.

[0047] The dotting unit 6 is used to mark the lenses in the lens carrier 8;

[0048] The unloading unit 7 is used to collect the marked lens tray 8 to complete the unloading process.

[0049] The loading unit 3, cleaning unit 4, detection unit 5, marking unit 6, and unloading unit 7 are arranged sequentially (e.g., fixed in a straight line on platform 1), with transport unit 2 located on one side, facilitating docking between workstations. Transport unit 2 includes a first X-axis motion unit 21, a first mounting plate 22, a first Y-axis motion unit 23, and a pushing unit. The first X-axis motion unit 21 can be a magnetically coupled rodless cylinder, and the first Y-axis motion unit 23 can be one or more roller-type precision slide cylinders. By adjusting the limit positions of the magnetically coupled rodless cylinders, sequential transport between workstations at various distances can be accommodated. The loading unit 3 can load and stack the lens trays 8 to be inspected, and the unloading unit 7 can load and stack the marked lens trays 8, improving transport efficiency. The detection unit 5 can perform multi-angle imaging at two workstations, completing the detection of various appearance defects in the lenses. Furthermore, it can automatically detect appearance defects in the entire tray of lenses by moving the horizontal moving platform 51, exhibiting high detection stability and efficiency. The marking unit 6 can mark the lenses in the lens carrier 8, such as marking defective lenses with a marker. Each structural unit can also be equipped with a corresponding position detection sensor to ensure accurate positioning.

[0050] This device synchronously moves the lens trays at the loading, cleaning, inspection, marking, and unloading stations via a transport unit, enabling sequential transport of the lens trays. It achieves multi-functionality in loading, cleaning, inspection, marking, and unloading, with a simple and reliable structure that significantly reduces product transportation costs and failure rates. The cleaning unit removes dust to prevent false detections, and the inspection unit, through multi-angle imaging at two stations, can detect various appearance defects in the lenses. Combined with the marking unit for marking, the detection is more accurate and highly integrated. Furthermore, it contributes to structural miniaturization while ensuring stable operation of the inspection unit. It can automatically detect appearance defects in the entire tray of lenses, offering high inspection stability and efficiency, avoiding secondary contamination caused by manual lens handling, and ensuring high product yield.

[0051] In one embodiment, the pushing unit includes a first push plate 24 and a second push plate 25. The first Y-axis motion unit 23 includes two second cylinders arranged side by side. The second cylinders correspond one-to-one with the first push plate 24 and the second push plate 25 and synchronously drive the corresponding push plates to move in the Y-axis. The first push plate 24 and the second push plate 25 are respectively provided with at least one limiting groove for accommodating the lens carrier 8 of the corresponding workstation.

[0052] In one embodiment, a plurality of springs 26 are also provided in the limiting groove. When the second cylinder drives the corresponding push plate to move in the Y direction, the springs 26 abut against or move away from the lens carrier 8 of the corresponding work station to release it.

[0053] Specifically, in this embodiment, the transport unit 2 includes a first X-axis motion unit 21 (magnetically coupled rodless cylinder), a first mounting plate 22, a first Y-axis motion unit 23 (two roller-type precision slide cylinders) and a push unit. The push unit consists of a first push plate 24 (main push plate), a second push plate 25 (auxiliary push plate) and 10 springs 26.

[0054] The first X-axis motion unit 21 can be directly or through an adapter plate to the platform 1. The adapter plate can be integrated or separate. Two parallel second cylinders are connected to the first X-axis motion unit 21 through the first mounting plate 22. The main push plate and the auxiliary push plate are connected to the corresponding second cylinders through pins and bolts, respectively. The main push plate has 3 notches (limiting grooves) and the auxiliary push plate has 2 notches. Each notch is equipped with 2 springs 26, that is, 6 springs 26 are fixed in the notches of the main push plate and 4 springs 26 are fixed in the notches of the auxiliary push plate. Each notch corresponds to a work station. Initially, they correspond to the work stations on the feeding unit 3, cleaning unit 4, detection unit 5 and marking unit 6 in sequence. The detection unit 5 contains two work stations. Under the push of the transport unit 2, each notch corresponds to the work stations on the cleaning unit 4, detection unit 5, marking unit 6 and unloading unit 7 in sequence. By changing the size of the notches on the main pusher plate and the auxiliary pusher plate, various sizes of lens carriers can be accommodated, enabling sequential handling of multiple products, reducing structural complexity, and thus reducing failure rate and saving costs.

[0055] In one embodiment, the feeding unit 3 includes a first mounting base 31, a first loading unit 32, a first support platform 33, a first Z-axis motion unit 34, and a first support unit 35. The first mounting base 31 is connected to the platform 1. The first support platform 33 and the first Z-axis motion unit 34 are both connected to the first mounting base 31 or the platform 1. The first loading unit 32 includes a first fixing plate 321 and a plurality of baffles 322. The first fixing plate 321 is horizontally mounted on the first mounting base 31. The baffles 322 are cylindrical and arranged in pairs. A set of four vertically arranged corners of the first fixing plate 321, each set of stop posts 322 is used to limit the movement against both sides of the lens carrier 8. The first support platform 33 includes a second mounting plate 331 and two first sliding plates 332 symmetrically arranged on the second mounting plate 331. The second mounting plate 331 is horizontally mounted on the first mounting base 31. Both the first fixing plate 321 and the second mounting plate 331 are provided with first through holes for the lens carrier 8 to pass through. The first fixing plate 321 is also provided with several first waist-shaped grooves 321a. Furthermore, the first waist-shaped grooves 321a on adjacent sides are perpendicular to each other, and the stop posts 322 are connected to the first fixing plate 321 one by one through screws passing through the first waist-shaped grooves 321a. The first support unit 35 includes symmetrically arranged first support units, each of which includes a first cylinder 351 and a stop block 352. The first cylinder 351 is mounted on the first fixing plate 321 and is used to drive the stop block 352 to extend or retract, thereby lifting or releasing the bottommost lens carrier 8 on the first loading unit 32. When loading, the first Z-axis movement... The moving unit 34 rises along the Z direction to lift the bottom lens tray 8 on the first loading unit 32. The first cylinder 351 drives the stop block 352 to retract. The bottom lens tray 8 moves downward along the Z direction by the first Z-moving unit 34 by the height of one lens tray 8. The first cylinder 351 drives the stop block 352 to extend. The first Z-moving unit 34 continues to move downward to place the bottom lens tray 8 on the first slide plate 332. The lens tray 8 on the first slide plate 332 is transported to the cleaning unit 4 by the transport unit 2.

[0056] The loading unit 3 includes a first mounting base 31, a first loading unit 32, a first support platform 33, a first Z-axis motion unit 34, and a first support unit 35. The first loading unit 32 is used to accommodate several stacked lens trays 8, which are supported by the first support unit 35. The first fixed plate 321 of the first loading unit 32 has four corner posts 322. The posts 322 are cylindrical and can be adjusted by the first waist-shaped groove 321a to allow for the placement of lens trays 8 of different sizes and to facilitate precise positioning. The bottom layer of lens trays 8 in the first loading unit 32 is transported to the first support platform 33 by the docking of the first Z-axis motion unit 34. Then, the lens trays 8 on the first slide plate 332 of the first support platform 33 are transported to the cleaning unit 4 by the transport unit 2.

[0057] In one embodiment, the unloading unit 7 includes a first mounting base 31, a first loading unit 32, a first bearing platform 33, a first Z-axis motion unit 34, and a second support unit 71. The first mounting base 31 is connected to the platform 1. The first bearing platform 33 and the first Z-axis motion unit 34 are both connected to the first mounting base 31 or the platform 1. The first loading unit 32 includes a first fixing plate 321 and a plurality of stop posts 322. The first fixing plate 321 is horizontally mounted on the first mounting base 31. The stop posts 322 are cylindrical and are arranged in pairs vertically at the four corners of the first fixing plate 321. Each pair of stop posts 322 is used to abut against the two sides of the lens carrier 8 for limiting movement. The first bearing platform 33 includes a second mounting plate 331 and two first sliding plates 332 symmetrically arranged on the second mounting plate 331. The second mounting plate 331 is horizontally mounted on the first mounting base 31. Both the first mounting plate 321 and the second mounting plate 331 have first through holes for the lens tray 8 to pass through. The first fixing plate 321 also has several first waist-shaped grooves 321a, and the first waist-shaped grooves 321a on adjacent sides are perpendicular to each other. The stop posts 322 are connected to the first fixing plate 321 one by one through screws passing through the first waist-shaped grooves 321a. The second support unit 71 includes symmetrically arranged second support units. The second support unit includes a fixing plate and a rotating plate that are hinged to each other. The fixing plate is installed on the first fixing plate 321. When the material is unloaded, the marked lens tray 8 is transported to the first sliding plate 332 of the first support platform 33. The first Z-axis motion unit 34 rises along the Z-axis to lift the lens tray 8 to the first loading unit 32. Then the first Z-axis motion unit 34 moves downward along the Z-axis. The lens tray 8 automatically falls onto the rotating plate under the action of gravity to complete the collection.

[0058] The unloading unit 7 and the loading unit 3 have basically the same structure. The difference is that the first support unit 35 of the loading unit 3 is replaced by the second support unit 71 in the unloading unit 7. The second support unit 71 is connected to a fixed plate and a rotating plate, so that after the first Z-axis motion unit 34 lifts the lens tray 8 in the Z-axis direction to the first loading unit 32, the lens tray 8 will automatically fall on the rotating plate under the action of gravity to support and stack for collection. That is, the rotating plate flips upward when the first Z-axis motion unit 34 lifts the lens tray 8 in the Z-axis direction, and automatically falls back downward when the first Z-axis motion unit 34 moves downward, so that the lens tray 8 falls on the rotating plate to achieve support.

[0059] In one embodiment, the first loading unit 32 further includes a plurality of adjusting blocks 323 corresponding one-to-one with the baffle 322. The baffle 322 is vertically mounted on the first fixed plate 321 through the adjusting blocks 323. The adjusting blocks 323 are provided with a second through hole and a second waist-shaped groove. The second waist-shaped groove is parallel to the corresponding first waist-shaped groove 321a. The first sliding plate 332 is an L-shaped plate.

[0060] Adjusting block 323 helps to further ensure the stability of the installation of the stop post 322. The first slide plate 332 on the first support platform 33 is an L-shaped plate and is symmetrically arranged. It can limit the lens carrier plate 8 to ensure accurate docking and avoid slippage. It is easy to understand that the first slide plate 332 can also be any shape.

[0061] In one embodiment, the cleaning unit 4 includes a first lifting unit 41 and a dust collection box 42. The first lifting unit 41 includes a second mounting base 411, a second support platform 412, and a second Z-axis motion unit 413. The second mounting base 411 is connected to the platform 1. The second Z-axis motion unit 413 is connected to the second mounting base 411 or the platform 1 and is used to drive the second support platform 412 to perform Z-axis motion. The dust collection box 42 is connected to the platform 1 and is used to clean the lens carrier 8 on the second support platform 412. The dust collection box 42 is an ion dust collection box.

[0062] Specifically, in this embodiment, the dust collection box 42 is an ion dust collection box, or it may be other dust collection devices in the prior art. By ensuring the dust collection box 42 is fixed and the dust collection is performed by lifting and lowering the support platform of the cleaning unit to connect with the dust collection box 42, it helps to achieve synchronous cooperation among various workstations and avoid mutual interference. This is especially beneficial when it is necessary to both transfer the lens tray 8 through the connection of the support platform and ensure the stable movement of the horizontal moving platform 51 of the detection unit 5, thereby further improving work efficiency.

[0063] In one embodiment, the horizontal moving stage 51 includes a bidirectional motion unit 511, a third support stage 512, and two clamping units 513. The bidirectional motion unit 511 is connected to the platform 1 and is used to drive the third support stage 512 to move in the X and Y directions. The third support stage 512 is used to place two lens carriers 8 side by side. The two clamping units 513 are installed on the third support stage 512 and correspond one-to-one with the lens carriers 8 to clamp or release the lens carriers 8. The first detection unit 52 includes a first adjustment seat 521, a first camera 522, a first light source 523, a second light source 524, a second camera 525, and a second adjustment seat 526. The first camera 522, the first light source 523, the second light source 524, and the second camera 525 are arranged sequentially along the Z direction and have coaxial optical axes. The first camera 522 and the first light source 523 are connected to the platform 1 through the first adjustment seat 521, and the second light source 524 and the second camera 525 are connected to the platform 1 through the first adjustment seat 521. Machine 525 is connected to platform 1 via second adjustment seat 526. First light source 523 and second light source 524 are ring light sources. First camera 522 and second camera 525 respectively acquire images of the lens on the lens carrier 8 near the cleaning unit 4 on the third support stage 512. Second detection unit 53 includes third adjustment seat 531, third light source 532, fourth light source 533, third camera 534 and fourth adjustment seat 535. Third light source 532, fourth light source 533 and third camera 534 are arranged sequentially along the Z direction and their optical axes are coaxial. Third light source 532 is connected to platform 1 via third adjustment seat 531. Fourth light source 533 and third camera 534 are connected to platform 1 via fourth adjustment seat 535. Third light source 532 is a surface light source and fourth light source 533 is a ring light source. Third camera 534 acquires images of the lens on the lens carrier 8 away from the cleaning unit 4 on the third support stage 512.

[0064] Among them, the detection unit 5 can realize multi-angle shooting at two stations, such as shooting from three angles using three cameras, namely one surface of the upper surface of the lens (such as a convex surface) and two surfaces of the lower surface (such as a concave surface and an annular plane). The specific angles can be adjusted according to the shape of the lens to complete the detection of various appearance defects of the lens. It can also realize the automatic detection of appearance defects of the entire disc of lenses by driving the horizontal moving stage 51, with high detection stability and efficiency.

[0065] In one embodiment, the first adjusting seat 521 and the third adjusting seat 531 are each provided with a plurality of third waist-shaped grooves for realizing X-axis, Y-axis and Z-axis movement adjustment, and the second adjusting seat 526 and the fourth adjusting seat 535 are each provided with a plurality of fourth waist-shaped grooves for realizing Y-axis and Z-axis movement adjustment.

[0066] The first adjustment seat 521, the second adjustment seat 526, the third adjustment seat 531, and the fourth adjustment seat 535 can be of any shape and can be an integral or separate structure. The distribution and size of the third waist-shaped grooves on the first adjustment seat 521 and the third adjustment seat 531 can be arbitrarily set, such as being distributed parallel to the X, Y, and Z directions to achieve three-degree-of-freedom adjustment. The distribution and size of the fourth waist-shaped grooves on the second adjustment seat 526 and the fourth adjustment seat 535 can also be arbitrarily set, such as being distributed parallel to the Y and Z directions to achieve two-degree-of-freedom adjustment. Adjusting the first adjustment seat 521 and the second adjustment seat 526 helps to achieve center alignment and distance adjustment between the first camera 522, the first light source 523, the second light source 524, and the second camera 525. Adjusting the third adjustment seat 531 and the fourth adjustment seat 535 helps to achieve center alignment and distance adjustment between the third light source 532, the fourth light source 533, and the third camera 534, enabling adaptation to the detection of different lenses. Each camera can carry a pair of lenses.

[0067] In one embodiment, the marking unit 6 includes a marking and positioning unit 61 and a second lifting unit 62. The marking and positioning unit 61 includes a third mounting base 611, a three-axis motion unit 612, and a marking pen 613. The third mounting base 611 is connected to the platform 1. The three-axis motion unit 612 is connected to the third mounting base 611 and is used to drive the marking pen 613 to move in the X, Y, and Z directions. The second lifting unit 62 includes a fourth mounting base 621, a third Z-axis motion unit 622, a correction unit 623, and a fourth support platform 624. The fourth mounting base 621 is connected to the platform 1. The third Z-axis motion unit 622 is connected to the fourth mounting base 621 or the platform 1 and is used to drive the fourth support platform 624 to move in the Z direction. The correction unit 623 is connected to the fourth support platform 624 and is used to realize the clamping, correction, or release of the lens carrier 8 on the fourth support platform 624. The marking pen 613 marks the lenses in the lens carrier 8 on the fourth support platform 624.

[0068] The dotting pen 613 can be a marker or similar device. By raising and lowering the carrier platform on the dotting unit 6, and cooperating with the three-axis motion unit 612 to drive the dotting pen 613 to move, the pen marks the entire tray of lenses in the lens carrier 8. This helps to achieve synchronous collaboration among various workstations and avoid mutual interference. In particular, it is necessary to transfer the lens carrier 8 through the docking of the carrier platform, and also to ensure the stable movement of the horizontal moving platform 51 of the detection unit 5 to avoid interference, thereby further improving work efficiency.

[0069] It should be noted that the second support platform 412, the third support platform 512 and the fourth support platform 624 are all structurally similar to the first support platform 33. For example, they all include a third mounting plate and two second sliding plates symmetrically arranged on the third mounting plate. The second sliding plates are L-shaped plates, and their specific shape and length can be adjusted according to actual needs.

[0070] Working principle:

[0071] like Figure 1 , Figure 2 As shown, during transport unit 2's conveying, the first X-axis motion unit 21 drives the second cylinder to move to the left limit position via the first mounting plate 22. Simultaneously, the two second cylinders extend the main push plate and auxiliary push plate, fixing the lens trays from the five stations of the loading unit 3, cleaning unit 4, inspection unit 5, and marking unit 6 into the five notches. At this time, springs 26 press the lens trays, keeping them aligned with the corresponding sides of the support platform. Then, the first X-axis motion unit 21 drives the second cylinder to move to the right limit position via the first mounting plate 22. Simultaneously, the main push plate and auxiliary push plate move the lens trays from the five stations sequentially to the next station through the notches, corresponding to the stations on the cleaning unit 4, inspection unit 5, marking unit 6, and unloading unit 7. After the transport is completed, the second cylinder simultaneously retracts the main push plate and auxiliary push plate, and the first X-axis motion unit 21 drives the second cylinder to move to the left limit position via the first mounting plate 22, preparing for the next transport.

[0072] During loading, the first Z-axis motion unit 34 rises along the Z-axis to lift the bottom lens tray 8 on the first loading unit 32. The first cylinder 351 drives the stop block 352 to retract, and the bottom lens tray 8 moves downward along the Z-axis by the first Z-axis motion unit 34 by the height of one lens tray 8. The first cylinder 351 drives the stop block 352 to extend, and the first Z-axis motion unit 34 continues to descend, placing the bottom lens tray 8 on the first slide plate 332. It awaits the next transport by the transport unit 2 to be conveyed to the cleaning unit 4. Simultaneously, the cleaning unit 4, the detection unit 5, and the marking unit 6 operate. Specifically, the dust collection box 42 of the cleaning unit 4 is fixed. By raising the second support platform 412 to connect with the dust collection box 42, the lens tray 8 on the second support platform 412 is cleaned. After the entire tray of lenses is cleaned by ion air in the cleaning chamber of the dust collection box 42, it descends to its original position, awaiting the next transport by the transport unit 2 to be conveyed to the detection unit 5. The two clamping units 513 of the detection unit 5 clamp the two lens trays 8 on the third support platform 512. The horizontal moving platform 51 synchronously drives the two lens trays 8 to move in the X and Y directions, moving the center of each lens in the entire tray to the center of the corresponding camera lens in sequence, taking pictures to analyze defects such as dirt, scratches, and cracks, and completing the image acquisition of all lenses in the corresponding lens tray 8. After the acquisition is completed, the clamping units 513 release the two lens trays 8 on the third support platform 512, waiting for the next handling to be transported to the marking unit 6 by the transport unit 2. The alignment unit 623 on the marking unit 6 clamps and aligns the lens trays 8 on the fourth support platform 624. The third Z-axis motion unit 622 drives the fourth support platform 624 to rise, and the three-axis motion unit 612 drives the marking pen 613 to move according to the position of the defective lens detected by the detection unit 5, marking the entire tray of lenses in the lens tray 8, marking the defective lens. After marking is completed, the alignment unit 623 releases the lens tray 8 on the fourth support platform 624 and lowers it to its original position, waiting for the next handling to be transported to the unloading unit 7 via the transport unit 2. Once all stations are completed, the lens tray 8 can be handled once via the transport unit 2. After being transported to the unloading unit 7, the marked lens tray 8 is transported to the first slide plate 332 of the first support platform 33 of the unloading unit 7. The first Z-axis motion unit 34 lifts the lens tray 8 along the Z-axis to the first loading unit 32, and then the first Z-axis motion unit 34 moves downward along the Z-axis. Under the action of gravity, the lens tray 8 automatically falls onto the rotating plate for support and collection, and finally the entire tray of lenses is moved into the unloading bin of the unloading unit 7.

[0073] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The embodiments described above are merely specific and detailed examples of the embodiments described in this application, and should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the scope of protection of this patent application should be determined by the appended claims.

Claims

1. A high-efficiency lens defect detection device, characterized in that: The high-efficiency lens defect detection device includes a platform (1), and a transport unit (2), a loading unit (3), a cleaning unit (4), a detection unit (5), a dotting unit (6), and a unloading unit (7), all installed on the platform (1), wherein: The transport unit (2) includes a first X-axis motion unit (21), a first mounting plate (22), a first Y-axis motion unit (23), and a pushing unit. The first X-axis motion unit (21) is connected to the platform (1) and is used to drive the first mounting plate (22) to move in the X-axis. The first Y-axis motion unit (23) is connected to the first mounting plate (22) and is used to drive the pushing unit to move in the Y-axis. The pushing unit is used to synchronously push the lens carrier (8) on the loading unit (3), cleaning unit (4), detection unit (5), dotting unit (6), and unloading unit (7) to move in the X-axis to the next station under the drive of the first X-axis motion unit (21). The lens carrier (8) is used to place several lenses. The loading unit (3) is used to load the lens carrier (8) and connect to the cleaning unit (4) for loading; The cleaning unit (4) is used to remove dust from the lens carrier (8) and connect it to the detection unit (5); The detection unit (5) includes a horizontal moving stage (51), a first detection unit (52) and a second detection unit (53). The first detection unit (52) and the second detection unit (53) are arranged side by side on the platform (1) and collect images of the lenses in different lens carriers (8) one by one. The horizontal moving stage (51) is connected to the platform (1) and is used to synchronously drive the two lens carriers (8) to move in the X direction and the Y direction to complete the image acquisition of all lenses in the corresponding lens carrier (8). The dotting unit (6) is used to mark the lenses in the lens carrier (8); The unloading unit (7) is used to collect the marked lens tray (8) to complete the unloading.

2. The high-efficiency lens defect detection device as described in claim 1, characterized in that: The pushing unit includes a first push plate (24) and a second push plate (25). The first Y-axis motion unit (23) includes two second cylinders arranged side by side. The second cylinders correspond one-to-one with the first push plate (24) and the second push plate (25) and synchronously drive the corresponding push plates to perform Y-axis motion. The first push plate (24) and the second push plate (25) are respectively provided with at least one limiting groove for accommodating the lens carrier (8) of the corresponding work station.

3. The high-efficiency lens defect detection device as described in claim 2, characterized in that: The limiting groove is also provided with several springs (26). When the second cylinder drives the corresponding push plate to move in the Y direction, the springs (26) abut against or move away from the lens carrier (8) of the corresponding work station.

4. The high-efficiency lens defect detection device as described in claim 1, characterized in that: The feeding unit (3) includes a first mounting base (31), a first loading unit (32), a first bearing platform (33), a first Z-axis motion unit (34), and a first support unit (35). The first mounting base (31) is connected to the platform (1). The first bearing platform (33) and the first Z-axis motion unit (34) are both connected to the first mounting base (31) or the platform (1). The first loading unit (32) includes a first fixing plate (321) and several baffles (322). The first fixing plate (321) is horizontally mounted on the first mounting base (31). The baffles (322) are cylindrical and arranged vertically in pairs. At the four corners of the first fixing plate (321), each set of the stop posts (322) is used to abut against the two sides of the lens carrier (8) for limiting the position. The first support platform (33) includes a second mounting plate (331) and two first sliding plates (332) symmetrically arranged on the second mounting plate (331). The second mounting plate (331) is horizontally mounted on the first mounting base (31). The first fixing plate (321) and the second mounting plate (331) are both provided with first through holes for the lens carrier (8) to pass through. The first fixing plate (321) is also provided with a plurality of first waist-shaped grooves (321a) on adjacent sides. The grooves (321a) are perpendicular to each other. The stop posts (322) are connected to the first fixing plate (321) one by one through screws passing through the first waist grooves (321a). The first support unit (35) includes symmetrically arranged first support units. The first support unit includes a first cylinder (351) and a stop block (352). The first cylinder (351) is installed on the first fixing plate (321) and is used to drive the stop block (352) to extend and retract, thereby lifting or releasing the bottom layer of the lens carrier (8) on the first loading unit (32). When loading, the first Z-axis motion unit (34) rises along the Z-axis to the support. Lift the bottom lens tray (8) on the first loading unit (32), the first cylinder (351) drives the stop (352) to retract, the bottom lens tray (8) moves downward along Z by the first Z-axis movement unit (34) by the height of the lens tray (8), the first cylinder (351) drives the stop (352) to extend, the first Z-axis movement unit (34) continues to move downward to place the bottom lens tray (8) on the first slide plate (332), and the lens tray (8) on the first slide plate (332) is transported to the cleaning unit (4) by the transport unit (2).

5. The high-efficiency lens defect detection device as described in claim 1, characterized in that: The unloading unit (7) includes a first mounting base (31), a first loading unit (32), a first bearing platform (33), a first Z-axis motion unit (34), and a second support unit (71). The first mounting base (31) is connected to the platform (1). The first bearing platform (33) and the first Z-axis motion unit (34) are both connected to the first mounting base (31) or the platform (1). The first loading unit (32) includes a first fixing plate (321) and several baffles (322). The first mounting plate (321) is horizontally mounted on the first mounting base (31). The stop posts (322) are cylindrical and are arranged in pairs at the four corners of the first fixed plate (321). Each set of stop posts (322) is used to abut against the two sides of the lens carrier (8) for limiting the position. The first support platform (33) includes a second mounting plate (331) and two first sliding plates (332) symmetrically arranged on the second mounting plate (331). The second mounting plate (331) is horizontally mounted on the first mounting base (31). Both the fixed plate (321) and the second mounting plate (331) have first through holes for the lens carrier (8) to pass through. The first fixed plate (321) also has several first waist-shaped grooves (321a) with adjacent first waist-shaped grooves (321a) perpendicular to each other. The stop posts (322) are connected to the first fixed plate (321) one by one by screws passing through the first waist-shaped grooves (321a). The second support unit (71) includes symmetrically arranged second support units. The second support unit includes... The system includes a fixed plate and a rotating plate that are hinged to each other. The fixed plate is installed on the first fixed plate (321). When the material is unloaded, the marked lens tray (8) is transported to the first slide plate (332) of the first support platform (33). The first Z-axis motion unit (34) rises along the Z-axis to lift the lens tray (8) to the first loading unit (32). Then, the first Z-axis motion unit (34) moves downward along the Z-axis. The lens tray (8) automatically falls on the rotating plate under the action of gravity to support and complete the collection.

6. The high-efficiency lens defect detection device as described in claim 4 or 5, characterized in that: The first loading unit (32) also includes a plurality of adjusting blocks (323) corresponding one-to-one with the stop post (322). The stop post (322) is vertically mounted on the first fixing plate (321) through the adjusting blocks (323). The adjusting blocks (323) are provided with a second through hole and a second waist-shaped groove. The second waist-shaped groove is parallel to the corresponding first waist-shaped groove (321a). The first sliding plate (332) is an L-shaped plate.

7. The high-efficiency lens defect detection device as described in claim 1, characterized in that: The cleaning unit (4) includes a first lifting unit (41) and a dust collection box (42). The first lifting unit (41) includes a second mounting base (411), a second support platform (412), and a second Z-axis motion unit (413). The second mounting base (411) is connected to the platform (1). The second Z-axis motion unit (413) is connected to the second mounting base (411) or the platform (1) and is used to drive the second support platform (412) to perform Z-axis motion. The dust collection box (42) is connected to the platform (1) and is used to clean the lens carrier (8) on the second support platform (412). The dust collection box (42) is an ion dust collection box.

8. The high-efficiency lens defect detection device as described in claim 1, characterized in that: The horizontal moving platform (51) includes a bidirectional motion unit (511), a third support platform (512), and two clamping units (513). The bidirectional motion unit (511) is connected to the platform (1) and is used to drive the third support platform (512) to move in the X and Y directions. The third support platform (512) is used to place two lens trays (8) side by side. The two clamping units (513) are installed on the third support platform (512) and correspond one-to-one with the lens trays (8) to clamp or release the lens trays (8). The detection unit (52) includes a first adjustment seat (521), a first camera (522), a first light source (523), a second light source (524), a second camera (525), and a second adjustment seat (526). The first camera (522), the first light source (523), the second light source (524), and the second camera (525) are arranged sequentially along the Z-axis and their optical axes are coaxial. The first camera (522) and the first light source (523) are connected to the platform (1) through the first adjustment seat (521), and the second light source (524) and the second camera (525) are connected through the first adjustment seat (526). The second adjustment seat (526) is connected to the platform (1). The first light source (523) and the second light source (524) are ring-shaped light sources. The first camera (522) and the second camera (525) respectively acquire images of the lenses on the lens carrier (8) near the cleaning unit (4) on the third support stage (512). The second detection unit (53) includes a third adjustment seat (531), a third light source (532), a fourth light source (533), a third camera (534), and a fourth adjustment seat (535). The third light source (532) and the fourth light source... (533) and the third camera (534) are arranged sequentially along the Z direction and are coaxial with the optical axis. The third light source (532) is connected to the platform (1) through the third adjustment seat (531). The fourth light source (533) and the third camera (534) are connected to the platform (1) through the fourth adjustment seat (535). The third light source (532) is a surface light source and the fourth light source (533) is a ring light source. The third camera (534) acquires images of the lenses on the lens carrier (8) on the third support platform (512) away from the cleaning unit (4).

9. The high-efficiency lens defect detection device as described in claim 8, characterized in that: The first adjusting seat (521) and the third adjusting seat (531) are each provided with a number of third waist-shaped grooves for X-axis, Y-axis and Z-axis movement adjustment. The second adjusting seat (526) and the fourth adjusting seat (535) are each provided with a number of fourth waist-shaped grooves for Y-axis and Z-axis movement adjustment.

10. The high-efficiency lens defect detection device as described in claim 1, characterized in that: The dotting unit (6) includes a marking and positioning unit (61) and a second lifting unit (62). The marking and positioning unit (61) includes a third mounting base (611), a three-axis motion unit (612), and a dotting pen (613). The third mounting base (611) is connected to the platform (1). The three-axis motion unit (612) is connected to the third mounting base (611) and is used to drive the dotting pen (613) to move in the X, Y, and Z directions. The second lifting unit (62) includes a fourth mounting base (621), a third Z-axis motion unit (622), and a correction unit. (623) and the fourth support platform (624), the fourth mounting base (621) is connected to the platform (1), the third Z-axis motion unit (622) is connected to the fourth mounting base (621) or the platform (1) and is used to drive the fourth support platform (624) to perform Z-axis motion, the correction unit (623) is connected to the fourth support platform (624) and is used to realize the clamping correction or release of the lens carrier (8) on the fourth support platform (624), and the lens in the lens carrier (8) on the fourth support platform (624) is marked by the dotting pen (613).

Images