Display screen AOI detection device

Abstract

The application discloses a display screen AOI detection device, which comprises a conveying mechanism, a carrying mechanism and a detection mechanism. The conveying mechanism comprises a first conveying line and a second conveying line arranged side by side along a first direction, and the first conveying line and the second conveying line convey display screens along a second direction. The first conveying line is divided into a qualified product conveying area and an unqualified product conveying area. The detection mechanism comprises a detection platform arranged outside the second conveying line, a first index plate arranged above the detection platform, a plurality of positioning jigs arranged in a ring array on the edge of the first index plate for positioning the display screen, and a visual detection unit arranged above the first index plate and opposite to the edge of the first index plate. The carrying mechanism comprises an XR shaft driving unit arranged along the first direction on the first conveying line, the second conveying line and the detection platform, and two carrying manipulators connected to the XR shaft driving unit. The working efficiency and detection precision of the application are greatly improved compared with artificial lighting test.

Description

Technical Field

[0001] This application relates to the field of AOI inspection technology, and specifically discloses a display screen AOI inspection device. Background Technology

[0002] The demand for computers in modern society is enormous. How to quickly identify defective displays from the large quantities of finished / semi-finished displays produced on the production line and ensure that good products flow to the next stage has become a major problem for businesses. In the past, manual testing was used, relying on the human eye for differentiation. However, the accuracy of this method varied depending on the operator's skill level, failing to meet the needs of enterprise development. Therefore, this application discloses an AOI (Automated Optical Inspection) device for displays. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this application discloses an AOI inspection device for a display screen.

[0004] To achieve the above objectives, the technical solution adopted in this application is: a display screen AOI inspection device, including a conveying mechanism, a handling mechanism, and an inspection mechanism;

[0005] The conveying mechanism includes a first conveying line and a second conveying line arranged side by side along a first direction. The first conveying line and the second conveying line convey the display screen along a second direction. The first conveying line is divided into a qualified product conveying area and a non-qualified product conveying area.

[0006] The detection mechanism includes a detection platform located outside the second conveyor line, a first indexing plate located above the detection platform, several positioning fixtures arranged in a circular array along the edge of the first indexing plate for positioning the display screen, and a vision detection unit mounted above the first indexing plate and opposite to the edge of the first indexing plate.

[0007] The handling mechanism includes an XR axis drive unit arranged along a first direction on a first conveyor line, a second conveyor line, and a testing machine, and two handling manipulators connected to the XR axis drive unit.

[0008] More preferably, the first conveyor line is provided with a first gantry at each end in the first direction, and a partition plate arranged along the second direction is connected to the lower part of the crossbeam of the two first gantry.

[0009] More preferably, an L-shaped box is provided above the detection platform, and the L-shaped box has a transport clearance groove on the step surface corresponding to the side near the transport mechanism.

[0010] More preferably, the visual inspection unit includes a visual inspection camera and a supplementary light box. The supplementary light box is positioned on one side of the inner top wall of the L-shaped box, directly opposite the edge of the first indexing plate, and is mounted on one side of the inner top wall of the L-shaped box, directly above the supplementary light box.

[0011] More preferably, the positioning fixture has a contoured groove inside that matches the shape of the display screen, a flip cover driven by a geared motor is hinged to one side of the positioning fixture, a slot corresponding to the display screen detection area is opened on the top of the flip cover, and a power terminal that makes electrical contact with the display screen is provided on the bottom side of the flip cover.

[0012] More preferably, the XR axis module includes a second gantry arranged along a first direction on a first conveyor line, a second conveyor line, and a testing machine, an X-axis servo drive module mounted on the crossbeam of the second gantry, and a second indexing plate connected to the X-axis servo drive module.

[0013] More preferably, two handling robots are arranged opposite each other on the second indexing plate, and each handling robot includes a pneumatic slide connected to the respective plate and several pneumatic suction cups disposed at the bottom of the pneumatic slide.

[0014] This application achieves the following beneficial effects:

[0015] This application can not only automatically feed the display screen, but also automatically perform AOI inspection on the display screen and distinguish between good and defective products for unloading. The work efficiency and inspection accuracy are greatly improved compared with manual lamp inspection, and it has high application value.

[0016] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures shown in the description and the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the disclosure of this application and, together with the specification, serve to explain the principles of this disclosure.

[0018] Figure 1 This is a schematic diagram of the overall structure disclosed in this application;

[0019] Figure 2 for Figure 1 Enlarged structural diagram at point A in the diagram;

[0020] Figure 3 This is a schematic diagram of the side structure disclosed in this application;

[0021] Figure 4 This is a schematic diagram of the positioning fixture structure disclosed in this application;

[0022] In the diagram: 10. Conveying mechanism; 11. First conveyor line; 111. Qualified product conveying area; 112. Unqualified product conveying area; 113. First gantry; 114. Divider plate; 12. Second conveyor line;

[0023] 20. Handling mechanism; 21. XR axis drive unit; 211. Second gantry; 212. X-axis servo drive module; 213. Second indexing plate; 22. Handling robot; 221. Pneumatic slide; 222. Pneumatic suction cup;

[0024] 30. Testing mechanism; 31. Testing platform; 32. First indexing plate; 33. Positioning fixture; 331. Contouring groove; 332. Flip cover; 3321. Empty groove; 3322. Gear motor; 3323. Power terminal; 34. Vision inspection unit; 341. Vision inspection camera; 342. Supplementary lighting box; 35. L-shaped box; 351. Transport clearance groove. Detailed Implementation

[0025] The technical solutions in 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.

[0026] In the description of this application, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the component or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0027] Example

[0028] To address the issue that existing technologies for testing displays by manually turning them on and relying on the human eye for differentiation suffer from inconsistent accuracy due to varying operator skill levels, thus failing to meet the needs of enterprise development, this paper refers to... Figures 1-4 As shown, in some embodiments, this application discloses a display screen AOI inspection device, including a conveying mechanism 10, a handling mechanism 20 and an inspection mechanism 30;

[0029] The conveying mechanism 10 includes a first conveying line 11 and a second conveying line 12 arranged side by side along a first direction. The first conveying line 11 and the second conveying line 12 convey the display screen along a second direction. The first conveying line 11 is divided into a qualified product conveying area 111 and an unqualified product conveying area 112.

[0030] Specifically, the first conveyor line 11 is provided with a first gantry 113 at both ends in the first direction. The crossbeams of the two first gantry 113 are connected to a partition plate 114 arranged along the second direction. In actual use, the two parts separated by the partition plate 114 are used to transport good products and the other part to transport defective products.

[0031] The inspection mechanism 30 includes an inspection platform 31 located outside the second conveyor line 12, a first indexing plate 32 located above the inspection platform 31, several positioning fixtures 33 arranged in a ring array along the edge of the first indexing plate 32 for positioning the display screen, and a vision inspection unit 34 mounted above the first indexing plate 32 and opposite to the edge of the first indexing plate 32.

[0032] In actual use, the conveying mechanism 20 will transport the displays conveyed on the second conveyor line 12 one by one to the positioning fixture 33, and under the drive of the first indexing plate 32, the positioning fixture 33 will move to the bottom of the vision inspection mechanism 30 and perform AOI inspection on it through the vision inspection unit 34.

[0033] The handling mechanism 20 includes an XR axis drive unit arranged along the first conveyor line 11, the second conveyor line 12 and the inspection machine, and two handling manipulators 22 connected to the XR axis drive unit 21.

[0034] Specifically, one of the handling robots 22 is designated as the loading robot, and the other robot is designated as the unloading robot. The XR axis drive unit 21 drives the two handling robots 22 to the top of the second conveyor line 12. The loading robot will grab a display screen to be inspected from the top of the second conveyor line 12. When the XR axis drive unit 21 drives the two handling robots 22 to the top of the inspection platform 31, the unloading robot will first grab the inspected display screen, and then the loading robot will place the grabbed display screen on the corresponding positioning fixture 33. In this way, the work of loading display screens, unloading defective products and unloading good products can be performed.

[0035] In some embodiments, an L-shaped box 35 is provided above the detection platform 31 of this application. The L-shaped box 35 has a transport clearance groove 351 on the step surface corresponding to the side near the transport mechanism 20. When the two transport robots 22 load or sort the display screen, they will pass through the transport clearance groove 351 into the positioning carrier.

[0036] Based on the above embodiments, the visual inspection unit 34 of this application includes a visual inspection camera 341 and a supplementary light box 342. The supplementary light box 342 is set on one side of the inner top wall of the L-shaped box 35, directly opposite the edge of the first indexing plate 32, through several pillars. The visual inspection camera 341 is set on one side of the inner top wall of the L-shaped box 35, directly above the supplementary light box 342. During the actual inspection, the supplementary light box 342 will emit strong light to illuminate the display screen, and the visual inspection camera 341 will take pictures of the display screen on the positioning fixture 33 through the supplementary light box 342. After the visual inspection camera 341 takes pictures, it will send them to the computer processing system, and the computer computing system will process and identify whether the corresponding display screen is qualified.

[0037] Specifically, this application provides a contoured groove 331 inside the positioning fixture 33 that matches the shape of the display screen. A flip cover 332 driven by a reduction motor 3322 is hinged to one side of the positioning fixture 33. A slot 3321 corresponding to the detection area of ​​the display screen is opened on the top of the flip cover 332. A power terminal 3323 that is in electrical contact with the display screen is provided on the bottom side of the flip cover 332. In actual implementation, when the handling robot 22 places the display screen in the contoured groove 331, the reduction motor 3322 drives the flip cover 332 to flip over to the top of the positioning fixture 33 and press down on the display screen. At the same time, the power terminal 3323 at the bottom of the flip cover 332 will be connected to the wiring terminal of the display screen. At this time, the display screen will emit light.

[0038] In some embodiments, the XR axis module of this application includes a second gantry 211 arranged along a first direction on a first conveyor line 11, a second conveyor line 12 and a testing machine, an X-axis servo drive module 212 disposed on a crossbeam of the second gantry 211 and a second indexing plate 213 connected to the X-axis servo drive module 212, and two handling robots 22 disposed opposite to each other on the second indexing plate 213. Each handling robot 22 includes a pneumatic slide 221 connected to the respective plate and a plurality of pneumatic suction cups 222 disposed at the bottom of the pneumatic slide 221.

[0039] When loading the display screen, the X-axis servo drive module 212 drives the second indexing plate 213 and two handling robots 22 to the top of the second conveyor line 12. After they are in position, the second indexing plate 213 drives the handling robots 22 for loading to rotate to the set position. Then, the corresponding pneumatic slide 221 drives several pneumatic suction cups 222 to descend and pick up a display screen on the second conveyor line 12 through the several pneumatic suction cups 222. After that, the X-axis servo drive module 212 drives the second indexing plate 213 and two handling robots 22 to the top of the detection platform 31. After they are in position, the second indexing plate 213 drives the handling robots 22 for loading to rotate to the set position. When the several pneumatic suction cups 222 stop adsorbing the display screen, the display screen will be placed in the corresponding positioning fixture 33.

[0040] During the sorting and unloading of the display screens, the X-axis servo drive module 212 drives the second indexing plate 213 and two handling robots 22 to the top of the inspection platform 31. After they are in position, the second indexing plate 213 drives the handling robots 22 used for unloading to rotate to the set position. Then, the corresponding pneumatic slide 221 drives several pneumatic suction cups 222 to descend and pick up the display screens that have been inspected in the positioning fixture 33 through the several pneumatic suction cups 222. After that, the X-axis servo drive module 212 drives the second indexing plate 213 and two handling robots 22 to the top of the first conveyor line 11. After they are in position, the second indexing plate 213 drives the handling robots 22 used for loading to rotate to the set position. When the several pneumatic suction cups 222 stop adsorbing the display screen, the display screen will be placed in the qualified product conveying area 111 or the unqualified product conveying area 112 of the corresponding first conveyor line 11.

[0041] In the description of this specification, the references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] The above embodiments are only for illustrating the technical concept and features of this application, and are intended to enable those skilled in the art to understand the content of this application and implement it accordingly. They should not be used to limit the scope of protection of this application. All equivalent changes or modifications made in accordance with the spirit and essence of this application should be included within the scope of protection of this application.

Claims

1. An AOI inspection device for a display screen, characterized in that, It includes a conveying mechanism (10), a handling mechanism (20), and a detection mechanism (30); The conveying mechanism (10) includes a first conveying line (11) and a second conveying line (12) arranged side by side along a first direction. The first conveying line (11) and the second conveying line (12) convey the display screen along a second direction. The first conveying line (11) is divided into a qualified product conveying area (111) and an unqualified product conveying area (112). The detection mechanism (30) includes a detection platform (31) located outside the second conveyor line (12), a first indexing plate (32) located above the detection platform (31), several positioning fixtures (33) arranged in a ring array along the edge of the first indexing plate (32) for positioning the display screen, and a visual detection unit (34) mounted above the first indexing plate (32) and opposite to the edge of the first indexing plate (32). The handling mechanism (20) includes an XR axis drive unit arranged along a first direction on a first conveyor line (11), a second conveyor line (12), and a testing machine, and two handling manipulators (22) connected to the XR axis drive unit (21).

2. The display screen AOI inspection device according to claim 1, characterized in that, The first conveyor line (11) is provided with a first gantry (113) at both ends in the first direction, and a partition plate (114) arranged along the second direction is connected to the lower part of the crossbeam of the two first gantry (113).

3. The display screen AOI inspection device according to claim 1, characterized in that, An L-shaped box (35) is provided above the detection platform (31), and a transport clearance groove (351) is provided on the step surface corresponding to the side of the transport mechanism (20) of the L-shaped box (35).

4. The display screen AOI inspection device according to claim 3, characterized in that, The visual inspection unit (34) includes a visual inspection camera (341) and a supplementary light box (342). The supplementary light box (342) is located on one side of the inner top wall of the L-shaped box (35) directly opposite the edge of the first indexing plate (32) and is supported by several pillars. The visual inspection camera (341) is located directly above the supplementary light box (342) on one side of the inner top wall of the L-shaped box (35).

5. The display screen AOI inspection device according to claim 1, characterized in that, The positioning fixture (33) has a contoured groove (331) inside that matches the shape of the display screen. A flip cover (332) driven by a geared motor (3322) is hinged to one side of the positioning fixture (33). A slot (3321) corresponding to the display screen detection area is opened on the top of the flip cover (332). A power terminal (3323) that is in electrical contact with the display screen is provided on the bottom side of the flip cover (332).

6. The display screen AOI inspection device according to claim 1, characterized in that, The XR axis module includes a second gantry (211) arranged along a first direction on a first conveyor line (11), a second conveyor line (12) and a testing machine, an X-axis servo drive module (212) mounted on the crossbeam of the second gantry (211), and a second indexing plate (213) connected to the X-axis servo drive module (212).

7. The display screen AOI inspection device according to claim 6, characterized in that, Two handling robots (22) are arranged opposite each other on the second indexing plate (213). The handling robots (22) include pneumatic slides (221) connected to the respective plates and several pneumatic suction cups (222) arranged at the bottom of the pneumatic slides (221).

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