Appearance detection device for electronic paper display screen

Abstract

The utility model relates to an appearance detection device for an electronic paper display screen. The electronic paper display screen appearance detection device comprises a detection platform which is provided with a detection area; the detection assembly comprises a strip-shaped light source which is positioned above the detection platform; the coaxial light source is positioned on one side, opposite to the detection platform, of the strip-shaped light source; the shooting assembly is located on the side, opposite to the strip-shaped light source, of the coaxial light source. The appearance detection device for the electronic paper display screen provided by the utility model can improve the detection accuracy of the electronic paper display screen, reduce material throwing and avoid AOI rework detection, so that the detection efficiency is improved, and the labor cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of display screen detection, and particularly relates to an appearance detection device for an electronic paper display screen. Background Art

[0002] In the current display screen industry such as electronic paper, it is necessary to perform lighting detection on the screen; after the PS film is pasted on the electronic paper display screen, edge sealing and gluing protection are required to prevent product oxidation caused by long-term placement. At the same time, the bonding surface area between the integrated circuit board (IC) and the flexible printed circuit board (FPC) also needs to be protected by gluing. However, during the dispensing process and when personnel collect materials, glue may splash onto the screen, resulting in a thin layer of glue marks and dirt on the product protective film; this layer of glue marks will affect the detection of automatic optical inspection (AOI) lighting, resulting in an increase in the number of rejected parts reaching more than 40%; instead of reducing staff and increasing efficiency, a large number of personnel are required for rework lighting detection, wasting manpower and material resources.

[0003] Due to the instability during the dispensing process in the previous process of the electronic paper display screen and the misoperation during personnel material collection, there are glue marks on the surface of the product protective film and they are not wiped in time and have solidified. When flowing to the AOI equipment for operation, in the prior art, the bar light camera light source cannot distinguish whether the glue marks are on the film or under the film, so it is easy to be interfered by the glue marks during detection, resulting in an increase in the number of rejected parts. The rejected products need to be manually lit and detected again, which is time-consuming and laborious. Therefore, it is necessary to solve the problems of increased cost, reduced efficiency, and poor quality caused by a large number of manual lighting and re-inspection due to the need to distinguish whether the glue marks are on the film or under the film for equipment detection to ensure a reduction in rejected parts. Therefore, a solution is needed to effectively identify the external surface glue marks on the electronic paper display screen, exclude the influence of the external surface glue marks during detection, reduce rejected parts, improve the accuracy of electronic paper display screen detection, avoid AOI rework detection, and thus improve the detection efficiency and reduce the labor cost. Summary of the Utility Model

[0004] Therefore, the utility model provides an appearance detection device for an electronic paper display screen to solve the problems in the prior art that the appearance detection device for an electronic paper display screen cannot distinguish between glue marks on the film and glue marks under the film, resulting in an increase in rejected parts, a relatively high AOI rework detection rate, and thus relatively low detection efficiency and high labor cost.

[0005] The utility model provides an appearance detection device for an electronic paper display screen, including: a detection platform, on which a detection area is provided; a detection component, including: a bar light source located above the detection platform; a coaxial light source located on the side of the bar light source facing away from the detection platform; and a shooting component located on the side of the coaxial light source facing away from the bar light source.

[0006] Optionally, the coaxial light source includes coaxial light panels respectively arranged on the first side, the second side, and the third side, and a coaxial light backplane arranged on the fourth side, wherein the first side and the fourth side are arranged opposite to each other, and the second side and the third side are arranged opposite to each other;

[0007] The coaxial light panel and the coaxial light back panel are rectangular and perpendicular to the detection platform;

[0008] The surface of the coaxial light panel is provided with a plurality of perforations; the thickness of the coaxial light backplane is greater than the thickness of the coaxial light panel;

[0009] The coaxial light panel and the coaxial light backplane are parallel to the center line connecting the coaxial light source and the shooting component.

[0010] Optionally, the coaxial light source further includes coaxial light fixing plates respectively arranged on the outside of the coaxial light panel; the coaxial light fixing plates include a first coaxial light fixing plate and a second coaxial light fixing plate;

[0011] The first coaxial light fixing plate is a hollow annular rectangle and is arranged outside the coaxial light panel of the first side surface;

[0012] The second coaxial light fixing plate is a rectangular panel with a plurality of hollowed-out rectangles, and is disposed outside the coaxial light panel on the second side surface and outside the coaxial light panel on the third side surface.

[0013] Optionally, the strip light source includes a plurality of strip light panels, and the strip light panels are rectangular;

[0014] At least one of the strip-shaped light panels is arranged on the plane where any of the coaxial light panels is located; at least one of the strip-shaped light panels is arranged on the plane where the coaxial light backplane is located.

[0015] Optionally, the strip light source further includes a plurality of strip light mounting plates;

[0016] At least one strip light mounting plate is arranged on the plane where any coaxial light panel is located; at least one strip light mounting plate is arranged on the plane where the coaxial light backplane is located; and the strip light panel is mounted on the strip light mounting plate.

[0017] Optionally, the shooting component includes a camera and a lens, the lens is located on a side of the coaxial light source facing away from the strip light source, and the camera is located on a side of the lens facing away from the coaxial light source;

[0018] The lens is located on the central axis of the coaxial light source and the strip light source and faces the detection area.

[0019] Optionally, the electronic paper display appearance detection device further includes a mounting assembly, including: a detection component mounting plate located on the side of the coaxial light source facing away from the bar light source;

[0020] The detection component mounting plate includes a first detection component mounting plate parallel to the detection platform, a second detection component mounting plate parallel to the coaxial light backplane, and a third detection component mounting plate; the second detection component mounting plate and the third detection component mounting plate are arranged opposite to each other;

[0021] The first detection component mounting plate is rectangular, and the second detection component mounting plate and the third detection component mounting plate are rectangles with the same area; a longitudinal slide rail is provided on the surface of the second detection component mounting plate facing away from the third detection component mounting plate;

[0022] The first detection component mounting plate is located above the coaxial light backplane and is connected to the partial upper surfaces of the coaxial light panels on the second side, the partial upper surfaces of the coaxial light panels on the third side, and the upper surface of the coaxial light backplane respectively;

[0023] The detection component mounting plate is provided with a first reinforcing rib on the same side as the second side of the coaxial light source and a second reinforcing rib on the same side as the third side of the coaxial light source; both the first reinforcing rib and the second reinforcing rib are hollow annular right-angled triangular panels;

[0024] The first detection component mounting plate is connected to the third detection component mounting plate through the first reinforcing rib and the second reinforcing rib, and one of the right-angled sides of the first reinforcing rib and the second reinforcing rib is connected to the first detection component mounting plate, and the other right-angled side is fixed to the surface of the third detection component mounting plate.

[0025] Optionally, the mounting assembly further includes a camera mount, the camera mount is located on the side of the second detection component mounting plate facing away from the third detection component mounting plate, and the camera mount is connected to the second detection component mounting plate through the longitudinal slide rail;

[0026] The camera mount is rectangular, and a camera card slot is provided on the surface of the camera mount facing away from the detection component mounting plate;

[0027] The camera mount is connected to the camera through the camera card slot.

[0028] Optionally, the mounting assembly further includes a detection component mounting base, the detection component mounting base is located above the detection component mounting plate and the photographing component;

[0029] The detection component mounting base is rectangular, and the mounting base is parallel to the detection platform;

[0030] A card slot is provided on the surface of the mounting base of the detection component, and a cable fixing clip is arranged in the card slot;

[0031] On the same side as the second side surface of the coaxial light source, a third reinforcing rib is further provided on the detection component mounting plate, and on the same side as the third side surface of the coaxial light source, a fourth reinforcing rib is further provided; the third reinforcing rib and the fourth reinforcing rib include a right-angled structure, and the two right-angled sides of the right-angled structure also extend in the opposite direction of the right angle beyond the intersection with the hypotenuse;

[0032] The detection component mounting base is connected to the second detection component mounting plate through the third reinforcing rib and the fourth reinforcing rib, and one right-angled side of the third reinforcing rib and the fourth reinforcing rib is connected to the detection component mounting base, and the other right-angled side is fixed to the surface of the second detection component mounting plate.

[0033] Optionally, the electronic paper display appearance detection device further includes a bracket, and a horizontal sliding rail is provided on the bracket; a sliding unit is arranged on the horizontal sliding rail, and the sliding unit is connected to the detection component mounting base; the sliding unit is adapted to drive the detection component to move along the horizontal sliding rail.

[0034] The technical solution of the present utility model has the following advantages:

[0035] (1) By combining the coaxial light source and the bar light source, a coaxial light source is arranged between the shooting component and the bar light source, and the coaxial light source is used to take a coaxial light image of the electronic paper display in the detection area, so that the glue printing on the film and the glue printing under the film can be effectively distinguished, and the glue printing on the outer surface of the electronic paper display can be identified.

[0036] (2) By arranging a bar light source below the coaxial light source and using the bar light source to take a bar light image of the electronic paper display in the detection area, the glue printing on the outer surface of the electronic paper display identified in the coaxial light image can be removed from the bar light image, thereby improving the detection rate of defective products. This solution can exclude the influence of the outer surface glue printing during detection, reduce the rejection rate, improve the accuracy of the electronic paper display detection, avoid AOI rework detection, and thus improve the detection efficiency and reduce the labor cost.

[0037] (3) The detection component mounting plate and the shooting component are connected through the camera base, and the camera can be flexibly moved by setting a horizontal sliding rail, which is convenient for adjusting the camera position, camera field of view, camera clarity, etc. according to actual needs, and at the same time ensures that the lens is located on the central axis of the coaxial light source and the bar light source; and faces the detection area.

[0038] (4) Connect the bracket and the detection component together through the installation base, and make the detection component move flexibly by setting the longitudinal slide rail and the sliding unit, and adjust the relative position between the detection component and the detection platform according to actual needs, which is convenient for operation and improves the detection efficiency. Description of the Drawings

[0039] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0040] Figure 1 It is a schematic structural diagram of an electronic paper display appearance detection device according to an embodiment of the present invention;

[0041] Figure 2a 、 Figure 2b 、 Figure 2c It is a schematic diagram of the shooting and detection principle of an electronic paper display appearance detection device according to an embodiment of the present invention;

[0042] Figure 3 It is a schematic structural diagram of another electronic paper display appearance detection device according to an embodiment of the present invention.

[0043] Explanation of the Reference Numerals:

[0044] 10 - Detection platform; 11 - Detection area; 20 - Detection component; 21 - Bar-shaped light source; 211 - Bar-shaped light panel; 212 - Bar-shaped light mounting plate; 22 - Coaxial light source; 221 - Coaxial light panel; 222 - Coaxial light backplane; 223 - First coaxial light fixing plate; 224 - Second coaxial light fixing plate; 23 - Shooting component; 231 - Camera; 232 - Lens; 31 - Detection component mounting plate; 311 - First detection component mounting plate; 312 - Second detection component mounting plate; 313 - Third detection component mounting plate; 314 - Longitudinal slide rail; 315 - First reinforcing rib; 316 - Second reinforcing rib; 317 - Third reinforcing rib; 318 - Fourth reinforcing rib; 32 - Camera base; 33 - Detection component mounting base; 331 - Cable fixing clip; 40 - Bracket; 41 - Transverse slide rail; 42 - Sliding unit; 50 - Electronic paper display; 51 - Offset printing on the outer surface of the electronic paper display. Detailed Embodiments

[0045] To solve the problem that in the existing technology, the appearance detection device for electronic paper displays cannot distinguish between the offset printing on the film and the offset printing under the film, resulting in an increase in material rejection, a high AOI rework detection rate, and thus a low detection efficiency and a high labor cost, the present utility model provides an appearance detection device for electronic paper displays, comprising: a detection platform, on which a detection area is provided; a detection component, including: a bar light source located above the detection platform; a coaxial light source located on the side of the bar light source facing away from the detection platform; and a shooting component located on the side of the coaxial light source facing away from the bar light source.

[0046] The technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model. In the description of the present utility model, it should be noted that the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0047] Refer to Figure 1 , this embodiment provides an appearance detection device for electronic paper displays, comprising:

[0048] A detection platform 10, on which a detection area 11 is provided;

[0049] A detection component 20, including:

[0050] A bar light source 21 located above the detection platform 10;

[0051] A coaxial light source 22 located on the side of the bar light source 21 facing away from the detection platform 10;

[0052] A shooting component 23 located on the side of the coaxial light source 22 facing away from the bar light source 21.

[0053] In the existing appearance detection of electronic paper displays, the camera light source cannot distinguish whether the glue mark is on the film or under the film, which will lead to a large amount of material rejection and a high AIO rework detection rate, and thus a low detection efficiency and a high labor cost.

[0054] In this embodiment, a coaxial light source and a bar light source are combined. By arranging a coaxial light source between the photographing component and the bar light source, and using the coaxial light source to take a photo of the electronic paper display screen in the detection area to obtain a coaxial light image, the offset printing on the film and the offset printing under the film can be effectively distinguished, and the offset printing on the outer surface of the electronic paper display screen can be identified. By arranging a bar light source below the coaxial light source and using the bar light source to take a photo of the electronic paper display screen in the detection area to obtain a bar light image, the offset printing on the outer surface of the electronic paper display screen identified in the coaxial light image can be removed from the bar light image, thereby improving the detection rate of defective products. This solution can exclude the influence of the outer surface offset printing during detection, reduce material rejection, improve the accuracy of electronic paper display screen detection, avoid AOI rework detection, and further improve the detection efficiency and reduce the labor cost.

[0055] Further, in this embodiment, the coaxial light source 22 includes coaxial light panels 221 respectively arranged on the first side, the second side, and the third side, and a coaxial light backplane 222 arranged on the fourth side, wherein the first side and the fourth side are oppositely arranged, and the second side and the third side are oppositely arranged; the coaxial light panels 221 and the coaxial light backplane 222 are rectangular and perpendicular to the detection platform 10;

[0056] A plurality of through holes are arranged on the surface of the coaxial light panel 221; the thickness of the coaxial light backplane 222 is greater than the thickness of the coaxial light panel 221. The coaxial light panels 221 and the coaxial light backplane 222 are parallel to the central connection line between the coaxial light source 22 and the photographing component 23;

[0057] The arrangement of the coaxial light panels 221 and the coaxial light backplane 222 can make the coaxial light source 22 more stable, facilitating the adjustment of coaxial light source parameters as needed, such as light source brightness, uniformity, etc.

[0058] Further, in this embodiment, the coaxial light source 22 further includes coaxial light fixing plates respectively arranged outside the coaxial light panels; the coaxial light fixing plates include a first coaxial light fixing plate 223 and a second coaxial light fixing plate 224; the first coaxial light fixing plate 223 is a hollow annular rectangle and is arranged outside the coaxial light panel on the first side; the second coaxial light fixing plate 224 is a rectangular panel with a plurality of hollow rectangles and is arranged outside the coaxial light panels on the second side and the third side.

[0059] The coaxial light source 22 can be fixed through the coaxial light fixing plates, facilitating the use of the photographing component 30 to take a coaxial light image under the coaxial light source 20, and making the obtained coaxial light image clearer and more stable.

[0060] Further, in this embodiment, the strip light source 21 includes a plurality of strip light panels 211, and the strip light panels 211 are rectangular; on the plane where any coaxial light panel 221 is located, at least one strip light panel 211 is provided; on the plane where the coaxial light backplane 222 is located, at least one strip light panel 211 is provided.

[0061] The setting of the strip light panel 221 can make the strip light source 21 more stable, facilitating the adjustment of strip light source parameters as needed, such as light source brightness, uniformity, etc.

[0062] Further, in this embodiment, the strip light source 21 further includes a plurality of strip light mounting plates 212; on the plane where any coaxial light panel 221 is located, at least one strip light mounting plate 212 is provided; on the plane where the coaxial light backplane 222 is located, at least one strip light mounting plate 212 is provided; the strip light panel 211 is mounted on the strip light mounting plate 212.

[0063] The strip light source 21 can be fixed below the coaxial light source 22 through the strip light mounting plate 212, facilitating the use of the imaging component 23 to capture a strip light image under the strip light source 22 after obtaining the coaxial light image, making the captured strip light image clearer and more stable.

[0064] Further, the imaging component 23 includes a camera 231 and a lens 232. The lens 232 is located on the side of the coaxial light source 22 facing away from the strip light source 21, and the camera 231 is located on the side of the lens 232 facing away from the coaxial light source 22; the lens 232 is located on the central axis of the coaxial light source 22 and the strip light source 21; and is oriented towards the detection area 11.

[0065] The direction and position of the lens 232 and the parameters of the camera 231, such as the camera field of view, camera clarity, etc., can be adjusted according to actual needs, making the captured coaxial light image and strip light image clearer and more accurate, which is beneficial for subsequent detection and analysis.

[0066] During specific implementation, as Figure 2a , Figure 2b , Figure 2c shown, first, the imaging component 23 takes a photo of the electronic paper display screen 50 in the detection area 11 under the coaxial light source 22, adjusts the lens 232 according to the camera field of view, clarity, and lighting uniformity, fixes it after the adjustment is completed, and captures the coaxial light image ( Figure 2a); First, the photographing component 23 takes a picture of the electronic paper display screen 50 in the detection area 11 under the bar-shaped light source 21, adjusts the lens 232 according to the camera field of view, clarity, and lighting uniformity, fixes it after the adjustment is completed, and obtains a bar-shaped light image. Figure 2b ); Finally, the offset printing 51 on the outer surface of the electronic paper display screen identified in the coaxial light image is removed from the bar-shaped light image to obtain a processed image. Figure 2c ) By comparing the processed image with the image of the blank display screen, it can be determined whether the appearance of the electronic paper display screen 50 is qualified.

[0067] Further, in this embodiment, the electronic paper display screen appearance detection device further includes a mounting component, including: a detection component mounting plate 31, and the detection component mounting plate 21 is located on the side of the coaxial light source 22 facing away from the bar-shaped light source 21; the detection component mounting plate 31 includes a first detection component mounting plate 311 parallel to the detection platform 10, a second detection component mounting plate 312 parallel to the coaxial light backplane, and a third detection component mounting plate 313; the second detection component mounting plate 312 and the third detection component mounting plate 313 are arranged opposite to each other; the first detection component mounting plate 311 is rectangular, and the second detection component mounting plate 312 and the third detection component mounting plate 313 are rectangles with the same area; a longitudinal slide rail 314 is provided on the surface of the second detection component mounting plate 312 facing away from the third detection component mounting plate 313; the first detection component mounting plate 311 is located above the coaxial light backplane 222 and is respectively connected to the partial upper surfaces of the coaxial light panels on the second side, the partial upper surfaces of the coaxial light panels on the third side, and the upper surface of the coaxial light backplane 222.

[0068] The detection component mounting plate 31 is provided with a first reinforcing rib 315 on the same side as the second side of the coaxial light source and a second reinforcing rib 315 on the same side as the third side of the coaxial light source; both the first reinforcing rib 315 and the second reinforcing rib 316 are hollow annular right-angled triangular panels; the first detection component mounting plate 311 is connected to the third detection component mounting plate 313 through the first reinforcing rib 315 and the second reinforcing rib 316, and one right-angled side of the first reinforcing rib 315 and the second reinforcing rib 316 is connected to the first detection component mounting plate 311, and the other right-angled side is fixed to the surface of the third detection component mounting plate 313.

[0069] Connecting the detection component mounting plate 31 to the partial upper surfaces of the coaxial light panels on the second side, the partial upper surfaces of the coaxial light panels on the third side, and the upper surface of the coaxial light backplane 222 can connect and fix the coaxial light source 22 and the bar-shaped light source 21 below.

[0070] Further, in this embodiment, the installation assembly further includes a camera base 32. The camera base 32 is located on the side of the second detection component mounting plate 312 facing away from the third detection component mounting plate 313. The camera base 32 is connected to the second detection component mounting plate 312 through the longitudinal slide rail 314. The camera base 32 is rectangular, and a camera card slot is provided on the surface of the side of the camera base 32 facing away from the detection component mounting plate 31. The camera base 32 is connected to the camera 231 through the camera card slot.

[0071] The detection component mounting plate 31 and the shooting component 23 are connected through the camera base 32. By setting the longitudinal slide rail, the camera 231 can move flexibly, facilitating the adjustment of the camera position, camera field of view, camera clarity, etc. according to actual needs. At the same time, it is ensured that the lens 232 is located on the central axis of the coaxial light source 22 and the bar light source 21 and faces the detection area 11.

[0072] The shooting component 23, the coaxial light source 22 and the bar light source 21 in the detection component 20 are connected as a whole through the detection component mounting plate 31, so that the detection component 20 can stably and flexibly shoot and detect and analyze the electronic paper display screen 50 in the detection area 11.

[0073] Further, in this embodiment, the installation assembly further includes a detection component mounting base 33. The detection component mounting base 33 is located above the detection component mounting plate 31 and the shooting component 23. The detection component mounting base 33 is rectangular and parallel to the detection platform 10. A card slot is provided on the surface of the detection component mounting base 33, and a cable fixing clip 331 is provided in the card slot.

[0074] On the same side as the second side of the coaxial light source, the detection component mounting plate 31 is further provided with a third reinforcing rib 317, and on the same side as the third side of the coaxial light source, a fourth reinforcing rib 318 is provided. The third reinforcing rib 317 and the fourth reinforcing rib 318 include a right-angled structure, and the two right-angled sides of the right-angled structure also extend in the opposite direction of the right angle beyond the intersection with the hypotenuse. The detection component mounting base 33 is connected to the second detection component mounting plate 312 through the third reinforcing rib 317 and the fourth reinforcing rib 318. One of the right-angled sides of the third reinforcing rib 317 and the fourth reinforcing rib 318 is connected to the detection component mounting base 33, and the other right-angled side is fixed to the surface of the second detection component mounting plate 312.

[0075] Further, in this embodiment, the electronic paper display appearance detection device further includes a bracket 40, and a horizontal slide rail 41 is provided on the bracket; a sliding unit 42 is provided on the horizontal slide rail, and the sliding unit 42 is connected to the detection component mounting base 33; the sliding unit 42 is adapted to drive the detection component 20 to move along the horizontal slide rail 41.

[0076] As Figure 3 shown, the height of the bracket 40 can also be adjusted. By flexibly adjusting the height and horizontal position, the shooting accuracy and detection speed can be improved. The bracket 40 can also be connected to two detection components 20. By connecting two detection components 20, the electronic paper display and the blank display in the detection area 11 can be photographed and analyzed simultaneously. The bracket 40 and the detection component 20 are connected together through the mounting base 33, and by providing the longitudinal slide rail 41 and the sliding unit 42, the detection component 20 can move flexibly and adjust the relative position between the detection component 20 and the detection platform 10 according to actual needs, which is convenient for operation and improves the detection efficiency.

[0077] In other embodiments, the bracket can also be connected to more than two detection components 20 to improve the detection efficiency, such as 3 or 5.

[0078] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. An electronic paper display screen appearance detection device, characterized in that: include: A detection platform, wherein a detection area is arranged on the detection platform; Detection components, including: A strip light source, located above the detection platform; A coaxial light source, located on a side of the strip light source facing away from the detection platform; The shooting assembly is located on a side of the coaxial light source facing away from the strip light source.

2. The electronic paper display screen appearance detection device according to claim 1, characterized in that: The coaxial light source comprises coaxial light panels respectively arranged on the first side, the second side and the third side, and a coaxial light backplane arranged on the fourth side, wherein the first side and the fourth side are arranged opposite to each other, and the second side and the third side are arranged opposite to each other; The coaxial light panel and the coaxial light back panel are rectangular and perpendicular to the detection platform; The surface of the coaxial light panel is provided with a plurality of perforations; the thickness of the coaxial light backplane is greater than the thickness of the coaxial light panel; The coaxial light panel and the coaxial light backplane are parallel to the center line connecting the coaxial light source and the shooting component.

3. The electronic paper display screen appearance detection device according to claim 2, characterized in that: The coaxial light source further comprises coaxial light fixing plates respectively arranged on the outer sides of the coaxial light panels; the coaxial light fixing plates comprise a first coaxial light fixing plate and a second coaxial light fixing plate; The first coaxial light fixing plate is a hollow annular rectangle and is arranged outside the coaxial light panel of the first side surface; The second coaxial light fixing plate is a rectangular panel with a plurality of hollowed-out rectangles, and is disposed outside the coaxial light panel on the second side surface and outside the coaxial light panel on the third side surface.

4. The electronic paper display appearance detection device according to claim 3, characterized in that: The strip light source comprises a plurality of strip light panels, and the strip light panels are rectangular; At least one of the strip-shaped light panels is arranged on the plane where any of the coaxial light panels is located; at least one of the strip-shaped light panels is arranged on the plane where the coaxial light backplane is located.

5. The electronic paper display screen appearance detection device according to claim 4, characterized in that: The strip light source also includes a plurality of strip light mounting plates; At least one strip light mounting plate is arranged on the plane where any coaxial light panel is located; at least one strip light mounting plate is arranged on the plane where the coaxial light backplane is located; and the strip light panel is mounted on the strip light mounting plate.

6. The electronic paper display screen appearance detection device according to claim 5, characterized in that: The shooting assembly includes a camera and a lens, wherein the lens is located on a side of the coaxial light source facing away from the strip light source, and the camera is located on a side of the lens facing away from the coaxial light source; The lens is located on the central axis of the coaxial light source and the strip light source and faces the detection area.

7. The electronic paper display screen appearance detection device according to claim 6, characterized in that: The electronic paper display appearance detection device further includes a mounting assembly, including: a detection assembly mounting plate, the detection assembly mounting plate being located on a side of the coaxial light source facing away from the strip light source; The detection component mounting plate includes a first detection component mounting plate parallel to the detection platform, and a second detection component mounting plate and a third detection component mounting plate parallel to the coaxial optical backplane; the second detection component mounting plate is arranged opposite to the third detection component mounting plate; The first detection component mounting plate is rectangular, and the second detection component mounting plate and the third detection component mounting plate are rectangles with the same area; a longitudinal slide rail is provided on the surface of the second detection component mounting plate facing away from the third detection component mounting plate; The first detection component mounting plate is located above the coaxial optical backplane, and is respectively connected to a portion of the upper surface of the coaxial optical panel on the second side, a portion of the upper surface of the coaxial optical panel on the third side, and an upper surface of the coaxial optical backplane; The detection component mounting plate is provided with a first reinforcing rib on the same side as the second side of the coaxial light source, and a second reinforcing rib on the same side as the third side of the coaxial light source; the first reinforcing rib and the second reinforcing rib are both hollow annular right-angled triangle panels; The first detection component mounting plate is connected to the third detection component mounting plate through the first reinforcement rib and the second reinforcement rib, one of the right-angled sides of the first reinforcement rib and the second reinforcement rib is connected to the first detection component mounting plate, and the other right-angled side is fixed to the surface of the third detection component mounting plate.

8. The electronic paper display screen appearance detection device according to claim 7, characterized in that: The mounting assembly further comprises a camera seat, the camera seat being located on a side of the mounting plate of the second detection assembly facing away from the mounting plate of the third detection assembly, the camera seat being connected to the mounting plate of the second detection assembly via the longitudinal slide rail; The camera seat is rectangular, and a camera slot is provided on a surface of the camera seat facing away from the detection component mounting plate; The camera seat is connected to the camera via the camera card slot.

9. The electronic paper display screen appearance detection device according to claim 8, characterized in that: The mounting assembly further comprises a detection assembly mounting base, and the detection assembly mounting base is located above the detection assembly mounting plate and the shooting assembly; The detection component mounting base is rectangular, and the mounting base is parallel to the detection platform; The surface of the detection component mounting base is provided with a card slot, and a cable fixing clip is provided in the card slot; The detection assembly mounting plate is further provided with a third reinforcing rib on the same side as the second side of the coaxial light source, and a fourth reinforcing rib is further provided on the same side as the third side of the coaxial light source; the third reinforcing rib and the fourth reinforcing rib comprise a right-angle structure, and the two right-angle sides of the right-angle structure also extend in the opposite direction of the right angle beyond the intersection with the hypotenuse; The detection component mounting base is connected to the second detection component mounting plate through the third reinforcement rib and the fourth reinforcement rib, one of the right-angled sides of the third reinforcement rib and the fourth reinforcement rib is connected to the detection component mounting base, and the other right-angled side is fixed to the surface of the second detection component mounting plate.

10. The electronic paper display screen appearance detection device according to claim 9, characterized in that: The electronic paper display appearance detection device also includes a bracket, on which a transverse slide rail is arranged; on the transverse slide rail a sliding unit is arranged, and the sliding unit is connected to the detection component mounting base; the sliding unit is suitable for driving the detection component to move along the transverse slide rail.

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