A large-size screen defect detection device

Abstract

The utility model relates to big size screen defect detection technical field discloses a kind of big size screen's defect detection device, including air floating conveying platform, camera rotating support and light source rotating support, the camera rotating support includes camera crossbeam, the camera crossbeam is located air floating conveying platform top, the extension direction of the camera crossbeam is perpendicular with air floating conveying platform's big size screen conveying direction, the rotation axis A of the camera rotating support is parallel with camera crossbeam, multiple industrial cameras are spaced apart on the camera crossbeam along its length direction;A kind of big size screen's defect detection device provided by the utility model solves the problem that the existing detection technology cannot carry out multi-angle detection to big size screen, and further influence the accuracy of detection result.

Description

Technical Field

[0001] This utility model relates to the field of large-size screen defect detection technology, specifically to a large-size screen defect detection device. Background Technology

[0002] Large-screen displays are indispensable for meetings and watching movies. Existing technologies for detecting defects in large-screen displays can detect defects at specific angles. During testing, the large-screen display is fixed in place, and defects are detected by moving the detection head. However, such technologies cannot detect large-screen displays from multiple angles, which affects the accuracy of the test results. Utility Model Content

[0003] The purpose of this invention is to provide a defect detection device for large-size screens to solve at least one of the aforementioned problems in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A defect detection device for a large screen includes an air-floating conveyor platform, a camera rotating bracket, and a light source rotating bracket. The camera rotating bracket includes a camera beam located above the air-floating conveyor platform. The extension direction of the camera beam is perpendicular to the large screen conveying direction of the air-floating conveyor platform. The rotation axis A of the camera rotating bracket is parallel to the camera beam. Multiple industrial cameras are spaced along the length of the camera beam.

[0006] The light source rotating bracket includes a light source beam located above the air flotation conveying platform. The extension direction of the light source beam is perpendicular to the conveying direction of the large-size screen of the air flotation conveying platform. The rotation axis B of the light source rotating bracket is parallel to the light source beam. A strip light source is provided on the light source beam along its length.

[0007] In this technical solution, the air-float conveyor platform is mainly used for transporting large-size screens. Since the camera beam is located above the air-float conveyor platform, multiple industrial cameras are spaced apart along its length. The light source beam is also located above the air-float conveyor platform, and strip light sources are arranged along its length. This means that during the transport of the large-size screen, it passes beneath the strip light sources and industrial cameras to facilitate image acquisition. Because the extension directions of both the camera beam and the light source beam are perpendicular to the transport direction of the large-size screen, different industrial cameras simultaneously acquire images along the width of the large-size screen, enabling efficient image acquisition for large screens. Since the rotation axis A of the camera rotating bracket is parallel to the camera beam, and the rotation axis B of the light source rotating bracket is parallel to the light source beam, both the industrial cameras and the strip light sources can rotate around these axes. This allows the industrial cameras to capture images of the large-size screen from multiple angles, achieving better image quality and improving the accuracy of the inspection results.

[0008] Furthermore, the camera beam is equipped with a filter mounting bracket, which is equipped with a rotator and a photoelectric sensor. The rotator is equipped with a filter disk located below the camera lens of the industrial camera. The filter disk is equipped with multiple filter elements with different filtering effects. The rotator drives the filter disk to rotate and switch the filter elements located below the camera lens. The photoelectric sensor enables the filter disk to obtain an accurate rotation stop position so that the filter elements can stop in a position facing the camera lens.

[0009] It should be noted that when the light source beam rotates to different angles, typically 30 degrees, 60 degrees, and 90 degrees, the angle of the light source changes, resulting in varying illumination of the large-size screen. In this technical solution, the rotator drives the filter disk to switch the filter located below the camera lens. This ensures that the light transmittance of the filter below the industrial camera matches the illumination of the large-size screen, resulting in better image capture. This enables the industrial camera to capture images of the large-size screen surface from multiple angles, achieving good image quality.

[0010] Furthermore, a motor is provided on the light source beam, and the motor drives the strip light source to rotate. The rotation axis of the strip light source is parallel to the light source beam.

[0011] Since the angle of the light source beam will be adjusted, this technical solution uses a motor to drive the strip light source to rotate, thereby adjusting the light source to a suitable illumination angle so that the light source illuminates the appropriate position on the product.

[0012] Furthermore, in order to better match the camera angle adjustment with the light source angle adjustment, the rotation axis A coincides with the rotation axis B.

[0013] Furthermore, in order to provide a simple, stable and reliable camera rotating bracket and light source rotating bracket, the camera rotating bracket includes symmetrically arranged camera rotating side plates, and the camera crossbeam is arranged between the two camera rotating side plates. The light source rotating bracket includes symmetrically arranged light source rotating side plates, and the light source crossbeam is arranged between the two light source rotating side plates. The camera rotating side plates and light source rotating side plates on the same side are coaxially rotatably connected to the side plate mounting base, and the light source rotating side plates are located inside the camera rotating side plates.

[0014] Furthermore, in order to improve the structural stability of the light source rotating bracket, a light source side plate connecting column is provided between the two light source rotating side plates.

[0015] Furthermore, in order to achieve automatic adjustment of the angles of the camera rotating bracket and the light source rotating bracket, a camera driving electric cylinder and a light source driving electric cylinder are also included. The air flotation conveying platform is symmetrically provided with a first foot plate and a second foot plate on both sides. The base of the camera driving electric cylinder is connected to the first foot plate through a first movable hinge. The head of the camera driving electric cylinder is connected to the camera rotating side plate through a second movable hinge. When the head of the camera driving electric cylinder extends, it pushes the camera rotating side plate to rotate.

[0016] The base of the light source driving electric cylinder is connected to the second foot plate via a third movable hinge, and the head of the light source driving electric cylinder is connected to the light source rotating side plate via a fourth movable hinge. When the head of the light source driving electric cylinder extends, it pushes the light source rotating side plate to rotate.

[0017] Furthermore, in order to improve the smoothness of rotation of the camera rotating side plate and the light source rotating side plate, the air flotation conveying platform is symmetrically provided with third foot plates on both sides, and the side plate mounting base is set on the third foot plates. The camera rotating side plate is rotatably connected to the outer side of the side plate mounting base through a first bearing, and the light source rotating side plate is rotatably connected to the inner side of the side plate mounting base through a second bearing.

[0018] Furthermore, the camera rotating side plate is provided with a camera beam adjustment screw, which can be used to adjust the parallelism between the camera beam and the ground.

[0019] The first foot plate is provided with first adjustment screws at its four corners, and the levelness of the first foot plate is adjusted by the first adjustment screws;

[0020] The second foot plate is provided with second adjustment screws at its four corners, which are used to adjust the levelness of the second foot plate.

[0021] The third foot plate is provided with third adjustment screws at its four corners, and the levelness of the third foot plate is adjusted by the third adjustment screws;

[0022] The third foot plate is equipped with mounting bracket adjustment screws, which can be used to adjust the installation position of the side plate mounting bracket.

[0023] Furthermore, a camera rotating side plate level is provided on the top of the camera rotating side plate, which is used to detect the levelness of the top of the camera rotating side plate;

[0024] The top of the rotating side plate of the light source is equipped with a rotating side plate level, which is used to detect the levelness of the top of the rotating side plate of the light source.

[0025] The camera beam is equipped with a fine-tuning platform, the industrial camera is mounted on the fine-tuning platform, and the fine-tuning platform is equipped with a fine-tuning level, which is used to detect the levelness of the fine-tuning platform.

[0026] A light source level is provided on the light source beam, which is used to detect the levelness of the light source beam.

[0027] The beneficial effects of this utility model are as follows: In this technical solution, the air-floating conveyor platform is mainly used for conveying large-size screens. Since the camera beam is located above the air-floating conveyor platform, multiple industrial cameras are spaced apart along its length on the camera beam. The light source beam is also located above the air-floating conveyor platform, and strip light sources are arranged along its length on the light source beam. That is, during the large-size screen conveying process, the large-size screen will pass below the strip light sources and industrial cameras to facilitate image acquisition. Because the extension direction of both the camera beam and the light source beam is perpendicular to the large-size screen conveying direction of the air-floating conveyor platform, different industrial cameras can simultaneously acquire images along the width of the large-size screen, achieving efficient image acquisition for large-size screens. Since the rotation axis A of the camera rotating bracket is parallel to the camera beam, and the rotation axis B of the light source rotating bracket is parallel to the light source beam, both the industrial cameras and the strip light sources can rotate around the rotation axis, allowing the industrial cameras to capture images of the large-size screen from multiple angles, achieving better image capture results and thus improving the accuracy of the detection results. Attached Figure Description

[0028] Figure 1 This is a first-view structural schematic diagram of the present invention;

[0029] Figure 2 This is a structural schematic diagram of the present invention from a second perspective;

[0030] Figure 3This is a partial structural diagram of the industrial camera in this utility model;

[0031] Figure 4 This is a schematic diagram of the first partial structure of the present invention;

[0032] Figure 5 This is a schematic diagram of the second partial structure of the present invention;

[0033] Figure 6 This is a schematic diagram of the third partial structure of the present utility model;

[0034] Figure 7 This is a schematic diagram of the fourth partial structure of the present invention;

[0035] Figure 8 This is a schematic diagram of the fifth partial structure of this utility model.

[0036] In the diagram: 1. Air-floating conveyor platform; 2. Camera beam; 3. Large screen; 4. Industrial camera; 5. Light source beam; 6. Strip light source; 7. Filter mounting bracket; 8. Rotator; 9. Photoelectric sensor; 10. Filter disk; 11. Camera lens; 12. Filter element; 13. Motor; 14. Camera rotating side plate; 15. Light source rotating side plate; 16. Side plate mounting base; 17. Light source side plate connecting column; 18. Camera drive cylinder; 19. Light source drive cylinder; 20. First foot plate; 21. Second foot plate; 22. First movable hinge. 22; Second movable hinge; 23; Third movable hinge; 24; Fourth movable hinge; 25; Third foot plate; 26; First bearing; 27; Second bearing; 28; Camera beam adjusting screw; 29; First adjusting screw; 30; Second adjusting screw; 31; Third adjusting screw; 32; Mounting base adjusting screw; 33; Camera rotating side plate level; 34; Light source rotating side plate level; 35; Fine adjustment platform; 36; Fine adjustment level; 37; Light source level; 38; Light source support base; 39; Connecting block; 40. Detailed Implementation

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0038] Example 1:

[0039] like Figures 1-8As shown, this embodiment provides a defect detection device for a large screen, including an air-floating conveyor platform 1, a camera rotating bracket and a light source rotating bracket. The camera rotating bracket includes a camera beam 2, which is located above the air-floating conveyor platform 1. The extension direction of the camera beam 2 is perpendicular to the conveying direction of the large screen 3 of the air-floating conveyor platform 1. The rotation axis A of the camera rotating bracket is parallel to the camera beam 2. Multiple industrial cameras 4 are spaced along the length of the camera beam 2.

[0040] The light source rotating bracket includes a light source beam 5, which is located above the air flotation conveying platform 1. The extension direction of the light source beam 5 is perpendicular to the conveying direction of the large screen 3 of the air flotation conveying platform 1. The rotation axis B of the light source rotating bracket is parallel to the light source beam 5. A strip light source 6 is provided on the light source beam 5 along its length.

[0041] In this technical solution, the air-floating conveyor platform 1 is mainly used to transport large-size screens 3. This conveying method can effectively reduce wear and tear on large-size screens. Since the camera beam 2 is located above the air-floating conveyor platform 1, and multiple industrial cameras 4 are spaced apart along its length on the camera beam 2, and the light source beam 5 is located above the air-floating conveyor platform 1, and strip light sources 6 are arranged along its length on the light source beam 5, that is, during the transport of the large-size screen 3, the large-size screen 3 will pass under the strip light sources 6 and the industrial cameras 4 to facilitate image acquisition. Because the extension direction of the camera beam 2 is perpendicular to the transport direction of the large-size screen 3 on the air-floating conveyor platform 1, and the extension direction of the light source beam 5 is also perpendicular to the transport direction of the large-size screen 3 on the air-floating conveyor platform 1, different industrial cameras 4 simultaneously acquire images along the width direction of the large-size screen 3, achieving efficient image acquisition for the large-size screen 3. Since the rotation axis A of the camera rotating bracket is parallel to the camera beam 2, and the rotation axis B of the light source rotating bracket is parallel to the light source beam 5, both the industrial camera 4 and the strip light source 6 can rotate around the rotation axis, enabling the industrial camera 4 to take pictures of the large screen 3 from multiple angles, achieving better picture quality and thus improving the accuracy of the detection results.

[0042] Example 2:

[0043] This embodiment is an optimization based on the above embodiment 1.

[0044] A filter mounting bracket 7 is provided on the camera beam 2. A rotator 8 and a photoelectric sensor 9 are provided on the filter mounting bracket 7. A filter disk 10 is provided on the rotator 8. The filter disk 10 is located below the camera lens 11 of the industrial camera 4. The filter disk 10 is provided with multiple filter elements 12 with different filtering effects. The rotator 8 drives the filter disk 10 to rotate and switch the filter elements 12 located below the camera lens 11. The photoelectric sensor 9 enables the filter disk 10 to obtain an accurate rotation stop position so that the filter elements 12 can stop in a position facing the camera lens 11.

[0045] It should be noted that when the light source beam 5 rotates to different angles, typically 30 degrees, 60 degrees, and 90 degrees, the light source angle changes, resulting in variations in the illumination of the large-size screen 3. In this technical solution, the rotator 8 drives the filter disk 10 to rotate and switch the filter 12 located below the camera lens 11. This allows the light transmittance of the filter 12 below the industrial camera 4 to match the illumination of the large-size screen 3, resulting in better image capture by the industrial camera 4. This enables the industrial camera 4 to capture images of the surface of the large-size screen 3 from multiple angles, achieving good image quality.

[0046] Example 3:

[0047] This embodiment is an optimization based on the above embodiment 1.

[0048] A motor 13 is installed on the light source beam 5. The motor 13 drives the strip light source 6 to rotate. The rotation axis of the strip light source 6 is parallel to the light source beam 5.

[0049] Since the angle of the light source beam 5 can be adjusted, this technical solution uses motor 13 to drive the strip light source 6 to rotate, thereby adjusting the light source to a suitable illumination angle so that the light source illuminates the appropriate position on the product.

[0050] To facilitate the installation of the strip light source 6, a light source support base 39 is provided on the light source beam 5. One end of the strip light source 6 is connected to the motor 13 through the connecting block 40, and the other end of the strip light source 6 is connected to the light source support base 39.

[0051] Example 4:

[0052] This embodiment is an optimization based on the above embodiment 1.

[0053] To better match the camera angle adjustment with the light source angle adjustment, rotation axis A and rotation axis B are aligned.

[0054] Example 5:

[0055] This embodiment is an optimization based on the above embodiment 4.

[0056] To provide a simple, stable and reliable camera rotating bracket and light source rotating bracket, the camera rotating bracket includes symmetrically arranged camera rotating side plates 14, and a camera crossbeam 2 is arranged between the two camera rotating side plates 14. The light source rotating bracket includes symmetrically arranged light source rotating side plates 15, and a light source crossbeam 5 is arranged between the two light source rotating side plates 15. The camera rotating side plates 14 and light source rotating side plates 15 on the same side are coaxially rotatably connected to the side plate mounting base 16, and the light source rotating side plates 15 are located inside the camera rotating side plates 14.

[0057] Example 6:

[0058] This embodiment is an optimization based on the above embodiment 5.

[0059] To improve the structural stability of the light source rotating bracket, a light source side plate connecting column 17 is provided between the two light source rotating side plates 15.

[0060] Example 7:

[0061] This embodiment is an optimization based on the above embodiment 5.

[0062] In order to achieve automatic adjustment of the angle of the camera rotating bracket and the light source rotating bracket, a camera driving electric cylinder 18 and a light source driving electric cylinder 19 are also included. The air flotation conveying platform 1 is symmetrically provided with a first foot plate 20 and a second foot plate 21 on both sides. The base of the camera driving electric cylinder 18 is connected to the first foot plate 20 through a first movable hinge 22. The head of the camera driving electric cylinder 18 is connected to the camera rotating side plate 14 through a second movable hinge 23. When the head of the camera driving electric cylinder 18 extends, it pushes the camera rotating side plate 14 to rotate.

[0063] The base of the light source drive cylinder 19 is connected to the second foot plate 21 via the third movable hinge 24, and the head of the light source drive cylinder 19 is connected to the light source rotating side plate 15 via the fourth movable hinge 25. When the head of the light source drive cylinder 19 extends, it pushes the light source rotating side plate 15 to rotate.

[0064] Example 8:

[0065] This embodiment is an optimization based on the above embodiment 7.

[0066] To improve the smoothness of rotation of the camera rotating side plate 14 and the light source rotating side plate 15, the air flotation conveying platform 1 is provided with third foot plates 26 symmetrically on both sides. The side plate mounting base 16 is set on the third foot plate 26. The camera rotating side plate 14 is rotatably connected to the outer side of the side plate mounting base 16 through the first bearing 27, and the light source rotating side plate 15 is rotatably connected to the inner side of the side plate mounting base 16 through the second bearing 28.

[0067] Example 9:

[0068] This embodiment is an optimization based on the above embodiment 8.

[0069] The camera rotating side plate 14 is equipped with a camera beam adjustment screw 29, which can be used to adjust the parallelism between the camera beam 2 and the ground.

[0070] The first foot plate 20 is provided with first adjustment screws 30 at its four corners, and the levelness of the first foot plate 20 is adjusted by the first adjustment screws 30.

[0071] The second foot plate 21 is provided with second adjustment screws 31 at its four corners, and the levelness of the second foot plate 21 is adjusted by the second adjustment screws 31.

[0072] The third foot plate 26 is provided with third adjustment screws 32 at its four corners, and the levelness of the third foot plate 26 is adjusted by the third adjustment screws 32.

[0073] The third foot plate 26 is provided with mounting bracket adjustment screws 33, and the installation position of the side plate mounting bracket 16 can be adjusted by adjusting the mounting bracket adjustment screws 33.

[0074] Example 10:

[0075] This embodiment is an optimization based on the above embodiment 5.

[0076] A camera rotating side plate level 34 is provided on the top of the camera rotating side plate 14. The camera rotating side plate level 34 is used to detect the levelness of the top of the camera rotating side plate 14.

[0077] A light source rotating side plate 15 is provided with a light source rotating side plate level 35 at its top. The light source rotating side plate level 35 is used to detect the levelness of the top of the light source rotating side plate 15.

[0078] A fine-tuning platform 36 is provided on the camera beam 2. An industrial camera 4 is installed on the fine-tuning platform 36. A fine-tuning level 37 is provided on the fine-tuning platform 36. The fine-tuning level 37 is used to detect the levelness of the fine-tuning platform 36.

[0079] A light source level 38 is provided on the light source beam 5, which is used to detect the levelness of the light source beam 5.

[0080] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A defect detection device for large-size screens, characterized in that: The system includes an air-floating conveyor platform, a camera rotating bracket, and a light source rotating bracket. The camera rotating bracket includes a camera beam located above the air-floating conveyor platform. The extension direction of the camera beam is perpendicular to the conveying direction of the large-size screen of the air-floating conveyor platform. The rotation axis A of the camera rotating bracket is parallel to the camera beam. Multiple industrial cameras are spaced along the length of the camera beam. The light source rotating bracket includes a light source beam located above the air flotation conveying platform. The extension direction of the light source beam is perpendicular to the conveying direction of the large-size screen of the air flotation conveying platform. The rotation axis B of the light source rotating bracket is parallel to the light source beam. A strip light source is provided on the light source beam along its length.

2. The defect detection device for a large-size screen according to claim 1, characterized in that: The camera beam is equipped with a filter mounting bracket, which includes a rotator and a photoelectric sensor. The rotator has a filter disk located below the camera lens of the industrial camera. The filter disk has multiple filter elements with different filtering effects. The rotator drives the filter disk to rotate and switch the filter elements located below the camera lens. The photoelectric sensor enables the filter disk to obtain an accurate stop position so that the filter elements can stop facing the camera lens.

3. The defect detection device for a large-size screen according to claim 1, characterized in that: A motor is mounted on the light source beam, and the motor drives the strip light source to rotate. The rotation axis of the strip light source is parallel to the light source beam.

4. The defect detection device for a large-size screen according to claim 1, characterized in that: The rotation axis A coincides with the rotation axis B.

5. The defect detection device for a large-size screen according to claim 4, characterized in that: The camera rotating bracket includes symmetrically arranged camera rotating side plates, and the camera crossbeam is disposed between the two camera rotating side plates. The light source rotating bracket includes symmetrically arranged light source rotating side plates, and the light source crossbeam is disposed between the two light source rotating side plates. The camera rotating side plate and the light source rotating side plate on the same side are coaxially rotatably connected to the side plate mounting base, and the light source rotating side plate is located inside the camera rotating side plate.

6. The defect detection device for a large-size screen according to claim 5, characterized in that: A connecting column for the light source side plates is provided between the two rotating side plates of the light source.

7. A defect detection device for a large-size screen according to claim 5, characterized in that: It also includes a camera drive cylinder and a light source drive cylinder. The air flotation conveying platform is symmetrically provided with a first foot plate and a second foot plate on both sides. The base of the camera drive cylinder is connected to the first foot plate through a first movable hinge. The head of the camera drive cylinder is connected to the camera rotating side plate through a second movable hinge. When the head of the camera drive cylinder extends, it pushes the camera rotating side plate to rotate. The base of the light source driving electric cylinder is connected to the second foot plate via a third movable hinge, and the head of the light source driving electric cylinder is connected to the light source rotating side plate via a fourth movable hinge. When the head of the light source driving electric cylinder extends, it pushes the light source rotating side plate to rotate.

8. The defect detection device for a large-size screen according to claim 7, characterized in that: The air flotation conveying platform is symmetrically provided with third foot plates on both sides, and the side plate mounting base is set on the third foot plates. The camera rotating side plate is rotatably connected to the outer side of the side plate mounting base through a first bearing, and the light source rotating side plate is rotatably connected to the inner side of the side plate mounting base through a second bearing.

9. A defect detection device for a large-size screen according to claim 8, characterized in that: The camera rotating side plate is equipped with a camera beam adjustment screw, which can be used to adjust the parallelism between the camera beam and the ground. The first foot plate is provided with first adjustment screws at its four corners, and the levelness of the first foot plate is adjusted by the first adjustment screws; The second foot plate is provided with second adjustment screws at its four corners, which are used to adjust the levelness of the second foot plate. The third foot plate is provided with third adjustment screws at its four corners, and the levelness of the third foot plate is adjusted by the third adjustment screws; The third foot plate is equipped with mounting bracket adjustment screws, which can be used to adjust the installation position of the side plate mounting bracket.

10. A defect detection device for a large-size screen according to claim 5, characterized in that: The top of the camera rotating side plate is equipped with a camera rotating side plate level, which is used to detect the levelness of the top of the camera rotating side plate. The top of the rotating side plate of the light source is equipped with a rotating side plate level, which is used to detect the levelness of the top of the rotating side plate of the light source. The camera beam is equipped with a fine-tuning platform, the industrial camera is mounted on the fine-tuning platform, and the fine-tuning platform is equipped with a fine-tuning level, which is used to detect the levelness of the fine-tuning platform. A light source level is provided on the light source beam, which is used to detect the levelness of the light source beam.

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