CN112808604A

CN112808604A - Lens MTF automatic detection sorting equipment

Info

Publication number: CN112808604A
Application number: CN202011538436.8A
Authority: CN
Inventors: 付丞; 杨发军; 王文波; 徐庆锋; 赵东方; 储旭东
Original assignee: Ningbo Chengda Precision Machinery Co Ltd
Current assignee: Ningbo Chengda Precision Machinery Co Ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-05-18

Abstract

The invention provides lens MTF automatic detection and sorting equipment which comprises a workbench, a feeding device, an MTF detection device, a sorting device and a carrying device, wherein the feeding device, the MTF detection device, the sorting device and the carrying device are arranged on the workbench; the feeding device is arranged on one side of the workbench and used for placing a lens to be tested; the MTF detection device is arranged on the other side of the workbench and used for detecting the lens to be detected so as to acquire MTF information of the lens; the sorting device and the feeding device are positioned on the same side and used for judging the quality of the tested lens according to the detection result of the MTF detection device and sorting the tested lens; the carrying device is arranged between the feeding device and the MTF detection device and is used for carrying the lens to be detected on the feeding device and carrying the detected lens detected by the MTF detection device; the automatic lens MTF detection and sorting equipment provided by the invention overcomes the defects of low detection efficiency, low yield and high labor intensity of the existing lens.

Description

Lens MTF automatic detection sorting equipment

Technical Field

The invention relates to the field of lens detection, in particular to automatic lens MTF detection and sorting equipment.

Background

MTF is a universal modulation transfer function, is a main test method for evaluating the resolution and performance of an optical system, and is an important auxiliary means for objective evaluation of the image forming capability of the optical system. With the development and progress of technology, MTF detection technology has been widely applied to the electronic field, especially to the detection of lenses in electronic products.

At present, the existing lens detection mode is: the lens is placed into an MTF testing machine in a manual feeding mode, the MTF testing machine performs MTF measurement on the lens and judges results, then the lenses with four specifications and colors are reflected on a display screen, and finally an operator manually performs grading on lens products one by using suction pens according to different colors displayed on the screen. The manual feeding is adopted, so that the detection speed is low; moreover, as the sorting is carried out manually, the color discrimination of human eyes for a long time is easy to generate fatigue, so that the sorting error is very likely to occur; the manual sorting efficiency is extremely low, and the manual sorting speed cannot keep up with the MTF test equipment speed, so that the labor intensity of staff is increased; in addition, the lens products are manually sorted by the suction pen, so that the risk that the lens products are scratched or fall off is very likely to exist, secondary pollution is caused, and the detection yield of the lenses is reduced.

Disclosure of Invention

Technical problem to be solved

The invention aims to provide automatic lens MTF detection and sorting equipment to overcome the defects of low detection efficiency, low yield and high labor intensity of the conventional lens.

(II) technical scheme

In order to solve the technical problem, the invention provides lens MTF automatic detection and sorting equipment which comprises a workbench, and a feeding device, an MTF detection device, a sorting device and a carrying device which are arranged on the workbench; the feeding device is arranged on one side of the workbench and used for placing a lens to be tested; the MTF detection device is arranged on the other side of the workbench and used for detecting the lens to be detected so as to acquire MTF information of the lens; the sorting device and the feeding device are positioned on the same side and used for judging the quality of the tested lens according to the detection result of the MTF detection device and sorting the tested lens; the carrying device is arranged between the feeding device and the MTF detection device and used for carrying the lens to be detected on the feeding device and carrying the lens to be detected by the MTF detection device.

Furthermore, the feeding device comprises a first sliding seat slidably mounted on the workbench and a feeding tray slidably mounted on the first sliding seat, a feeding bracket is erected above the feeding tray, a plurality of material trays full of lenses to be tested are stacked in the inner layer of the feeding bracket, and first clamping jaws for clamping the material trays are arranged at two ends of the feeding tray; and first limiting plates for controlling the charging tray to slide are slidably mounted on two sides of the bottom of the feeding bracket. The top of feed tray still is provided with first empty dish bracket, first empty dish bracket is used for depositing empty the charging tray, the bottom both sides of first empty dish bracket are rotated and are installed and be convenient for with the charging tray pushes away to first locating part in the first empty dish bracket.

Further, the carrying device comprises a first carrying mechanism, a second carrying mechanism and a relay platform arranged between the first carrying mechanism and the second carrying mechanism. First transport mechanism is including erectting frame and slidable mounting on the workstation are in second slide in the frame, rotate on the second slide and install first rotation piece, the symmetry is provided with first sucking disc on the second slide, the both ends of first rotation piece are provided with first arch, be provided with on the first sucking disc with first protruding complex first draw-in groove. The second transport mechanism includes slidable mounting and is in third slide and slidable mounting on the workstation are in fourth slide on the third slide, it rotates to rotate to install the second on the fourth slide, the symmetry is provided with the second sucking disc on the fourth slide, the second rotates the both ends of piece and is provided with the second arch, be provided with on the second sucking disc with the protruding complex second draw-in groove of second. The relay platform is fixed on the workbench, and at least two material suction grooves are formed in the relay platform.

Further, the device also comprises a visual correction device for correcting the placing position; the vision correction device comprises a first lens and a second lens which are matched with each other, the first lens is fixed on the second sliding seat, and the second lens is arranged on the workbench.

Further, the MTF detection device comprises a movable detection platform, a light emitting component disposed at the lower end of the detection platform, and a spherical support covering the detection platform; the ball-shaped support includes the round platform seat and follows a plurality of arc slide rails of circumferencial direction equidistant setting, be provided with vertical detection lens on the round platform seat, slidable mounting on the arc slide rail have with vertical detection lens matched with circumference detection lens.

Furthermore, the sorting device comprises a fifth sliding seat which is slidably mounted on the workbench and a plurality of sorting trays which are slidably mounted on the fifth sliding seat, a plurality of sorting brackets and a second empty tray bracket are erected above the sorting trays, the sorting brackets are used for storing material trays which are full of tested lenses with the same quality, and second clamping jaws are arranged at two ends of each sorting tray; the bottom both sides slidable mounting of second vacant lot bracket has the second limiting plate, the bottom both sides of sorting bracket are rotated and are installed the second locating part.

(III) advantageous effects

The automatic lens MTF detection and sorting equipment provided by the invention has the advantages of simple structure, high automation degree and high detection precision; the method comprises the steps that through the cooperation of a feeding device, an MTF detection device, a sorting device and a carrying device, a lens to be detected is placed in the feeding device during detection, then the lens to be detected is carried into the MTF detection device through the carrying device, after the detection of the MTF detection device is completed, the carrying device carries the detected lens onto the sorting device, and finally the carrying device carries out quality judgment and split charging on the detected lens according to the detection result of the MTF detection device, so that the whole-process automatic operation is realized, the production efficiency of the lens is greatly improved, the influence of human factors on the detection result is reduced, the accuracy of lens detection is favorably improved, and the detection yield of products is improved; the visual correction device is arranged, and the accuracy of placing the lens on the detection platform can be improved and the detection accuracy is improved through the matching of the first lens and the second lens; the defects of low detection efficiency, low yield and high labor intensity of the conventional lens are overcome.

Drawings

Fig. 1 is a perspective view of a lens MTF automatic detection sorting apparatus according to the present invention;

FIG. 2 is a schematic structural diagram of an automatic lens MTF detecting and sorting apparatus according to the present invention;

FIG. 3 is a perspective view of a feeding device of the lens MTF automatic detection sorting apparatus of the present invention;

FIG. 4 is a schematic structural diagram of a feeding device of the lens MTF automatic detection sorting apparatus of the present invention;

FIG. 5 is a perspective view of a handling device of the lens MTF automatic detection and sorting apparatus of the present invention;

FIG. 6 is a perspective view of a first carrying mechanism of the automatic lens MTF inspecting and sorting apparatus according to the present invention;

FIG. 7 is a perspective view of a second carriage of an automatic lens MTF inspecting and sorting apparatus according to the present invention;

FIG. 8 is a perspective view of a second carrying mechanism of the automatic lens MTF inspecting and sorting apparatus according to the present invention;

FIG. 9 is a perspective view of a fourth carriage of an automatic lens MTF inspecting and sorting apparatus according to the present invention;

fig. 10 is a perspective view of a relay platform of the lens MTF automatic detection sorting apparatus of the present invention;

fig. 11 is a perspective view of an MTF detection device of a lens MTF automatic detection sorting apparatus according to the present invention;

fig. 12 is a schematic structural diagram of an MTF detection device of a lens MTF automatic detection sorting apparatus according to the present invention;

fig. 13 is a perspective view of a sorting device of the lens MTF automatic detection sorting apparatus of the present invention;

fig. 14 is a schematic structural diagram of a sorting device of a lens MTF automatic detection sorting apparatus according to the present invention;

the corresponding part names for the various reference numbers in the figures are: 1. a work table; 2. a feeding device; 3. MTF detection means; 4. a sorting device; 5. a carrying device; 6. a first slider; 7. a feeding tray; 8. a feeding bracket; 9. a material tray; 10. a first jaw; 11. a first limit plate; 12. a first empty tray carrier; 13. a first limit piece; 14. a first carrying mechanism; 15. a second carrying mechanism; 16. a relay platform; 17. a frame; 18. a second slide carriage; 19. a first rotating member; 20. a first suction cup; 21. a first protrusion; 22. a first card slot; 23. a third slide carriage; 24. a fourth slider; 25. a second rotating member; 26. a second suction cup; 27. a second protrusion; 28. a second card slot; 29. a material suction groove; 30. a vision correction device; 31. a first lens; 32. a second lens; 33. a detection platform; 34. a light emitting assembly; 35. a spherical support; 36. a round pedestal; 37. an arc-shaped slide rail; 38. a vertical detection lens; 39. a circumferential detection lens; 40. a fifth slider; 41. a sorting tray; 42. a sorting bracket; 43. a second empty tray carrier; 44. a second jaw; 45. a second limiting plate; 46. a second limiting member.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

Referring to fig. 1 to 14, the present invention provides a lens MTF automatic detection sorting apparatus, which includes a workbench 1, and a feeding device 2, an MTF detection device 3, a sorting device 4, and a conveying device 5 disposed on the workbench 1. The feeding device 2 is arranged on one side of the workbench 1 and used for placing a lens to be tested; the MTF detection device 3 is arranged on the other side of the workbench 1 and used for detecting the lens to be detected so as to acquire MTF information of the lens; the sorting device 4 is positioned on the same side with the feeding device 2 and is used for judging the quality of the tested lens according to the detection result of the MTF detection device 3 and sorting the tested lens; the carrying device 5 is arranged between the feeding device 2 and the MTF detection device 3 and is used for carrying the lens to be tested on the feeding device 2 and carrying the lens to be tested detected by the MTF detection device 3.

Referring to fig. 3 and 4, the feeding device 2 includes a first slide 6 slidably mounted on the workbench 1 along a horizontal direction and a feeding tray 7 slidably mounted on the first slide 6 along a vertical direction, a motor and a screw rod for driving the first slide 6 to horizontally slide are mounted on the workbench 1, and an air cylinder for driving the feeding tray 7 to ascend and descend is mounted on the first slide 6. A feeding bracket 8 and a first empty tray bracket 12 are erected above the feeding tray 7, a plurality of material trays 9 full of lenses to be tested are stacked in the feeding bracket 8 along the vertical direction, first clamping jaws 10 used for clamping the material trays 9 are arranged at two ends of the feeding tray 7, and the first clamping jaws 10 are driven by cylinders fixed on the feeding tray 7. Two sides of the bottom of the feeding bracket 8 are slidably provided with first limiting plates 11 for controlling the material tray 9 to slide, and the first limiting plates 11 are driven by cylinders fixed on the feeding bracket 8; the first empty tray bracket 12 is used for storing empty trays 9, two sides of the bottom of the first empty tray bracket 12 are rotatably provided with first limiting parts 13 which are convenient for pushing the trays 9 into the first empty tray bracket 12, and the first limiting parts 13 can only rotate upwards.

During feeding, the first limiting plate 11 slides towards two sides to enable the material tray 9 in the feeding bracket 8 to slide onto the feeding tray 7, the first clamping jaw 10 clamps the material tray 9 tightly, the first sliding seat 6 drives the feeding tray 7 to slide to the lower side of the carrying device 5, the carrying device 5 carries away a lens to be tested in the material tray 9, and after the lens is carried, the empty material tray 9 is pushed into the first empty tray bracket 12 to be stored under the matching of the first sliding seat 6 and the feeding tray 7.

Referring to fig. 5, the carrying device 5 includes a first carrying mechanism 14, a second carrying mechanism 15, and a relay platform 16 disposed between the first carrying mechanism 14 and the second carrying mechanism 15.

Referring to fig. 6 and 7, the first carrying mechanism 14 includes a frame 17 erected on the work table 1, and a second slide 18 slidably mounted on the frame 17 in the horizontal direction, a first rotating member 19 is rotatably mounted on the second slide 18, and the first rotating member 19 is driven by a motor fixed on the second slide 18. The second slide seat 18 is symmetrically provided with first suction cups 20, two ends of the first rotating member 19 are provided with first protrusions 21, and the first suction cups 20 are provided with first locking grooves 22 matched with the first protrusions 21.

Referring to fig. 8 and 9, the second carrying mechanism 15 includes a third slide 23 slidably mounted on the worktable 1 and a fourth slide 24 slidably mounted on the third slide 23, and the third slide 23 is mounted with a motor and a screw for driving the fourth slide 24. A second rotating member 25 is rotatably mounted on the fourth slide 24, and the second rotating member 25 is driven by a motor fixed to the fourth slide 24. The fourth sliding seat 24 is symmetrically provided with second suction cups 26, two ends of the second rotating member 25 are provided with second protrusions 27, and the second suction cups 26 are provided with second locking grooves 28 matched with the second protrusions 27. Referring to fig. 10, the relay platform 16 is fixed on the work table 1, and at least two material suction grooves 29 are provided on the relay platform 16.

During carrying, the second slide carriage 18 slides to the upper part of the sorting device 4, one first suction disc 20 of the second slide carriage 18 puts the tested lens sucked from the relay platform 16 into the sorting device 4, the other first suction disc 20 sucks the tested lens from the material tray 9 on the feeding tray 7, then the second slide carriage 18 slides to the upper part of the relay platform 16, and the first suction disc 20 puts the tested lens into the suction groove 29; then, the third slide carriage 23 and the fourth slide carriage 24 are matched and slid above the relay platform 16, one of the second suction cups 26 puts the tested lens sucked from the MTF detection device 3 into the relay platform 16, and the other second suction cup 26 sucks the tested lens therein and sends the lens to the MTF detection device 3 for detection under the driving of the third slide carriage 23 and the fourth slide carriage 24.

Referring to fig. 5 and 6, the lens MTF automatic detection sorting apparatus further includes a vision correction device 30 for correcting a placement position; the vision correction device 30 includes a first lens 31 and a second lens 32 which are matched with each other, the first lens 31 is fixed on the second slide 18, and the second lens 32 is arranged on the workbench 1. In the process of carrying the lens, the first lens 31 takes pictures of the material tray 9 and the lens product from the upper part, and the second lens 32 takes pictures of the lens product from the lower side, so that the position of the lens is corrected, the accuracy of putting the lens into the material tray 9 and the lens into the detection platform is improved, and the reliability of the mechanism and the detection accuracy are improved.

Referring to fig. 11 and 12, the MTF detecting apparatus 3 includes a movable detecting platform 33, a light emitting element 34 disposed at a lower end of the detecting platform 33, and a spherical support 35 covering the detecting platform 33; the spherical support 35 comprises a circular base 36 and a plurality of arc-shaped slide rails 37 arranged at equal intervals along the circumferential direction, a vertical detection lens 38 is arranged on the circular base 36, and a circumferential detection lens 39 matched with the vertical detection lens 38 is slidably mounted on the arc-shaped slide rails 37.

Referring to fig. 13 and 14, the sorting device 4 includes a fifth slide 40 slidably mounted on the workbench 1 in the horizontal direction and a plurality of sorting trays 41 slidably mounted on the fifth slide 40 in the vertical direction, a motor and a screw for driving the fifth slide 40 to slide are mounted on the workbench 1, and an air cylinder for driving the sorting trays 41 to ascend and descend is mounted on the fifth slide 40. A plurality of sorting brackets 42 and a second empty tray bracket 43 are erected above the sorting tray 41, the sorting brackets 42 are used for storing and placing the material trays 9 full of the measured lenses with the same quality, second clamping jaws 44 are arranged at two ends of the sorting tray 41, and the second clamping jaws 44 are driven by air cylinders fixed on the sorting tray 41. Second limiting plates 45 are slidably mounted on two sides of the bottom of the second empty tray bracket 43, the second limiting plates 45 are used for controlling the material tray 9 to slide, and the second limiting plates 45 are driven by cylinders fixed on the second empty tray bracket 43; the second limiting members 46 are rotatably mounted on two sides of the bottom of the sorting bracket 42, and the second limiting members 46 can only rotate upwards so as to push the tray 9 into the sorting bracket 42.

During sorting, the second limiting plate 45 slides towards two sides, the plurality of material trays 9 in the second empty tray bracket 43 slide down to the sorting tray 41, and the second clamping jaws 44 clamp the material trays 9; then the sorting tray 41 is driven by the fifth slide 40 to slide to the lower side of the first conveying mechanism 14, the first suction tray 20 on the second slide 18 places the tested lenses into the corresponding material tray 9 according to the detection result, and when the material tray 9 is full of lenses with the same quality, the sorting tray 41 is driven by the fifth slide 40 and the sorting tray 41 to push down to the corresponding sorting bracket 42 for storage.

The automatic lens MTF detection and sorting equipment provided by the embodiment is simple in structure, high in automation degree and high in detection precision; the method comprises the steps that through the cooperation of a feeding device, an MTF detection device, a sorting device and a carrying device, a lens to be detected is placed in the feeding device in advance during detection, then the lens to be detected is carried into the MTF detection device through the carrying device, after the detection of the MTF detection device is completed, the carrying device carries the measured lens onto the sorting device, and finally the carrying device carries out quality judgment and subpackaging on the measured lens according to the detection result of the MTF detection device, so that the whole-process automatic operation is realized, the production efficiency of the lens is greatly improved, the influence of human factors on the detection result is reduced, the accuracy of lens detection is favorably improved, and the detection yield of products is improved; the visual correction device is arranged, and the accuracy of placing the lens on the detection platform can be improved and the detection accuracy is improved through the matching of the first lens and the second lens; various defects caused by manual detection are overcome.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a camera lens MTF automated inspection sorting facilities which characterized in that: the device comprises a workbench (1), and a feeding device (2), an MTF detection device (3), a sorting device (4) and a conveying device (5) which are arranged on the workbench (1); the feeding device (2) is arranged on one side of the workbench (1) and used for placing a lens to be tested; the MTF detection device (3) is arranged on the other side of the workbench (1) and is used for detecting the lens to be detected so as to acquire MTF information of the lens; the sorting device (4) and the feeding device (2) are positioned on the same side and used for judging the quality of the tested lens according to the detection result of the MTF detection device (3) and sorting the tested lens; the carrying device (5) is arranged between the feeding device (2) and the MTF detection device (3) and is used for carrying the lens to be tested on the feeding device (2) and carrying the lens to be tested detected by the MTF detection device (3).

2. The lens MTF automatic detection sorting apparatus according to claim 1, wherein: the feeding device (2) comprises a first sliding seat (6) slidably mounted on the workbench (1) and a feeding tray (7) slidably mounted on the first sliding seat (6), a feeding bracket (8) is erected above the feeding tray (7), a plurality of material discs (9) full of lenses to be tested are stacked in the feeding bracket (8), and first clamping jaws (10) used for clamping the material discs (9) are arranged at two ends of the feeding tray (7); and first limiting plates (11) used for controlling the charging tray (9) to slide are slidably mounted on two sides of the bottom of the feeding bracket (8).

3. The lens MTF automatic detection sorting apparatus according to claim 2, wherein: the top of feed tray (7) still is provided with first empty dish bracket (12), first empty dish bracket (12) are used for depositing empty charging tray (9), the bottom both sides of first empty dish bracket (12) are rotated and are installed and be convenient for with charging tray (9) push away to first locating part (13) in first empty dish bracket (12).

4. The lens MTF automatic detection sorting apparatus according to claim 1, wherein: the conveying device (5) comprises a first conveying mechanism (14), a second conveying mechanism (15) and a relay platform (16) arranged between the first conveying mechanism (14) and the second conveying mechanism (15).

5. The lens MTF auto-detection sorting apparatus of claim 4, wherein: first handling mechanism (14) are including erectting frame (17) and slidable mounting on workstation (1) second slide (18) on frame (17), it installs first rotation piece (19) to rotate on second slide (18), the symmetry is provided with first sucking disc (20) on second slide (18), the both ends of first rotation piece (19) are provided with first arch (21), be provided with on first sucking disc (20) with first protruding (21) complex first draw-in groove (22).

6. The lens MTF auto-detection sorting apparatus of claim 4, wherein: second transport mechanism (15) are including slidable mounting third slide (23) and slidable mounting on workstation (1) fourth slide (24) on third slide (23), it installs second rotation piece (25) to rotate on fourth slide (24), the symmetry is provided with second sucking disc (26) on fourth slide (24), the both ends that second rotation piece (25) are provided with the protruding (27) of second, be provided with on second sucking disc (26) with protruding (27) complex second draw-in groove (28) of second.

7. The lens MTF auto-detection sorting apparatus of claim 4, wherein: the relay platform (16) is fixed on the workbench (1), and at least two material suction grooves (29) are formed in the relay platform (16).

8. The lens MTF auto-detection sorting apparatus of claim 5, wherein: the device also comprises a visual correction device (30) for correcting the placing position; the vision correction device (30) comprises a first lens (31) and a second lens (32) which are matched with each other, the first lens (31) is fixed on the second sliding seat (18), and the second lens (32) is arranged on the workbench (1).

9. The lens MTF automatic detection sorting apparatus according to claim 1, wherein: the MTF detection device (3) comprises a movable detection platform (33), a light-emitting component (34) arranged at the lower end of the detection platform (33) and a spherical support (35) covered above the detection platform (33); spherical support (35) include a plurality of arc slide rails (37) that circle base (36) and edge circumferencial direction equidistant setting, be provided with vertical detection camera lens (38) on circle base (36), slidable mounting has on arc slide rail (37) with vertical detection camera lens (38) matched with circumference detects camera lens (39).

10. The lens MTF automatic detection sorting apparatus according to claim 1, wherein: the sorting device (4) comprises a fifth sliding seat (40) which is slidably mounted on the workbench (1) and a plurality of sorting trays (41) which are slidably mounted on the fifth sliding seat (40), a plurality of sorting brackets (42) and a second empty tray bracket (43) are erected above the sorting trays (41), the sorting brackets (42) are used for storing the material trays (9) full of tested lenses with the same quality, and second clamping jaws (44) are arranged at two ends of the sorting trays (41); the bottom both sides slidable mounting of second vacant lot bracket (43) has second limiting plate (45), the bottom both sides of sorting bracket (42) are rotated and are installed second locating part (46).