Panel diffuser appearance defect ai detection apparatus

Abstract

The utility model relates to test equipment field, and the panel diffusion piece appearance defect AI detection equipment, including detection support, blanking support and cylinder conveying frame, detection support and blanking support are arranged before and after, cylinder conveying frame runs through detection support and blanking support, the middle part of detection support is equipped with first, second, third and fourth light source, first, second light source is located below cylinder conveying frame, third, fourth light source is located above cylinder conveying frame, the below of first, second light source is equipped with lower camera, the above of third, fourth light source is equipped with upper camera, lower camera and upper camera are connected with AI identification system, the middle part of blanking support is equipped with the gripper assembly that can move left and right and lift, one side of gripper assembly is equipped with collection box, the rear end of cylinder conveying frame is equipped with the stop board that can lift, and a plurality of cylinders are on cylinder conveying frame. The utility model can realize the comprehensive automatic detection of panel diffusion piece appearance defect.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment, specifically to an AI detection device for appearance defects in panel diffuser sheets. Background Technology

[0002] The diffuser sheet is a key optical component in the backlight module of LCD / OLED panels, primarily functioning to disperse point light sources (LEDs) into a uniform surface light source. Currently, surface inspection of the diffuser sheet is typically done manually. However, the material and structural characteristics of the diffuser sheet make inspection extremely difficult: 1. High light transmittance / semi-transparency results in extremely low contrast between defects and the background, making it easy to miss defects; 2. Fine surface textures easily generate optical noise, interfering with image processing; 3. Large size / flexibility makes it prone to wrinkles and indentations, requiring a large field of view or high-speed scanning; 4. Micrometer-level defects, such as black spots, scratches, and crystal points, require sub-millimeter precision. These characteristics make manual inspection prone to fatigue, resulting in low inspection efficiency and inconsistent standards. Utility Model Content

[0003] This utility model provides an AI detection device for appearance defects of panel diffusers. Its main purpose is to overcome the problems of low detection efficiency and inconsistent standards caused by the existing manual visual inspection method for panel diffusers.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: An AI-based inspection device for surface defects in panel diffusers includes an inspection bracket, a feeding bracket, and a roller conveyor. The inspection bracket and the feeding bracket are arranged front to back, and the roller conveyor runs through both. A first light source, a second light source, a third light source, and a fourth light source are located in the middle of the inspection bracket. The first and second light sources are located below the roller conveyor, and the third and fourth light sources are located above the roller conveyor. The first light source is vertically oriented upwards, the second light source is tilted backwards at a 45° angle, the third light source is vertically oriented downwards, and the fourth light source is tilted backwards at a 45° angle. A lower... The camera includes an upper camera located above the third and fourth light sources, and a lower camera and an upper camera connected to an AI recognition system. A gripper assembly that can move left and right and rise and fall is located in the middle of the unloading bracket. A collection box is located on one side of the gripper assembly. A liftable stop plate is located at the rear end of the roller conveyor. The roller conveyor has multiple rollers arranged at intervals along its length, and a drive motor is installed on the roller conveyor to drive the multiple rollers. The first, second, third, and fourth light sources, the upper camera, the lower camera, the gripper assembly, the stop plate, and the drive motor are all controlled by a control system. The AI ​​recognition system is connected to the control system.

[0005] Furthermore, the front end of the detection bracket is provided with a mounting plate, and a photoelectric sensor is connected to the top of the mounting plate. The photoelectric sensor can sense through the gap between two adjacent rollers, and the photoelectric sensor is connected to the control system.

[0006] Furthermore, the bottom of the detection bracket is provided with a lower camera mounting bracket, the lower camera is connected to the top of the lower camera mounting bracket, and the top of the detection bracket is provided with an upper camera mounting bracket, the upper camera is connected to the bottom of the upper camera mounting bracket.

[0007] Furthermore, the upper perimeter of the testing bracket is provided with a first door panel, the top of the testing bracket is provided with a first top plate, the upper perimeter of the unloading bracket is provided with a second door panel, and the top of the unloading bracket is provided with a second top plate.

[0008] Furthermore, the gripper assembly includes a first linear slide module, a connecting seat, a second linear slide module, a suction cup mounting seat, and multiple suction cups. The first linear slide module is disposed in the upper part of the unloading bracket in the left-right direction. The connecting seat is connected to the slide of the first linear slide module. The second linear slide module is connected to the rear end of the connecting seat in the vertical direction. The suction cup mounting seat is connected to the slide of the second linear slide module. The multiple suction cups are installed at the bottom of the suction cup mounting seat. The first linear slide module and the second linear slide module are controlled by a control system.

[0009] Furthermore, a trolley is provided inside the left side of the feeding bracket, and the collection box is placed on top of the trolley.

[0010] Furthermore, a lifting cylinder is provided at the rear end of the roller conveyor frame. The piston rod of the lifting cylinder faces upward, and the stop plate is connected to the piston rod of the lifting cylinder. When the piston rod of the lifting cylinder rises, the stop plate can rise from the gap between two adjacent rollers. The lifting cylinder is controlled by the control system.

[0011] Furthermore, the roller conveyor frame includes multiple support frames arranged front to back and two support plates connected to the top of the multiple support frames. The two support plates are arranged left to right, and multiple rollers are arranged front to back between the two support plates at intervals. One end of each roller is provided with a driven sprocket. A motor mounting frame is provided between the bottoms of the two support plates. The drive motor is mounted on the motor mounting frame. The output shaft of the drive motor is connected to a main sprocket. The motor mounting frame is also provided with two tension sprockets arranged front to back. The main sprocket, the driven sprocket, and the two tension sprockets are for a chain to pass over.

[0012] Furthermore, a baffle is provided at the rear of the roller conveyor frame, and a guide plate inclined to the right is provided at the front end of the baffle.

[0013] Furthermore, the left side of the baffle is connected to two connecting rods arranged in a front-to-back manner, and the top right end of the roller conveyor frame is provided with two locking blocks arranged in a front-to-back manner, each locking block corresponding to a connecting rod. The locking block is provided with a rod hole for the connecting rod to pass through, and half of the locking block is provided with a cut that communicates with the rod hole. The locking block is provided with a first bolt hole and a first threaded hole, which are located above and below the cut, respectively. A first bolt is threaded through the first bolt hole and connected to the first threaded hole.

[0014] As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following advantages: After the panel diffuser sheet enters the front roller on the roller conveyor, the upper camera and the lower camera begin to capture images. While the multiple rollers are rolling, the upper camera and the lower camera capture images simultaneously. When the upper camera captures images, the first light source and the fourth light source adopt a time-division strobe method to provide the upper camera with two light sources at different angles for imaging. The AI ​​recognition system obtains two images under different lighting conditions by splitting the row sequence. Similarly, when the lower camera captures images, the second light source and the third light source also adopt a time-division strobe method. The upper camera and the lower camera send the top and bottom images of the panel diffuser sheet they respectively acquire to the AI ​​recognition system for recognition. The AI ​​recognition system performs AI recognition detection based on a pre-trained model. If the panel diffuser sheet passes the recognition detection, it proceeds to the next process. If the panel diffuser sheet fails the recognition detection, the stop plate rises to stop the panel diffuser sheet that has failed the detection. The gripper assembly then grabs the panel diffuser sheet that has failed the detection and puts it into the collection box. This invention enables fully automated detection of appearance defects in panel diffuser sheets, significantly improving detection efficiency, reducing the uncertainty and fatigue of manual visual inspection, and greatly enhancing detection speed and quality. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the present invention.

[0016] Figure 2 This is a structural diagram of the present invention after removing the first and second door panels.

[0017] Figure 3 This is a structural diagram of the detection bracket of this utility model.

[0018] Figure 4 This is a structural diagram of the material feeding bracket of this utility model.

[0019] Figure 5 This is a structural diagram of the roller conveyor frame of this utility model.

[0020] Figure 6 This is a structural diagram of the roller conveyor frame of this utility model from another angle.

[0021] Figure 7 for Figure 5 A magnified view of a portion of point A in the middle.

[0022] Figure 8 This is a schematic diagram of the roller conveyor frame of this utility model conveying the diffuser sheet of the panel.

[0023] Figure 9 This is a structural diagram of the gripper assembly of this utility model. Detailed Implementation

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device 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 utility model.

[0025] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Reference Figures 1 to 5An AI-based inspection device for surface defects in panel diffusers includes an inspection bracket 1, a feeding bracket 2, and a roller conveyor 3. The inspection bracket 1 and the feeding bracket 2 are arranged front to back, and the roller conveyor 3 passes through both the inspection bracket 1 and the feeding bracket 2. A first light source 11, a second light source 12, a third light source 13, and a fourth light source 14 are located in the middle of the inspection bracket 1. The first light source 11 and the second light source 12 are located below the roller conveyor 3, with the first light source 11 positioned behind the second light source 12. The third light source 13 and the fourth light source 14 are located above the roller conveyor 3, with the third light source 13 positioned behind the fourth light source 14. The first light source 11 is vertically oriented upwards, the second light source 12 is tilted backwards at a 45° angle, the third light source 13 is vertically oriented downwards, and the fourth light source 14 is tilted backwards at a 45° angle. The light from the first light source 11 and the second light source 12 is directed towards the bottom surface of the panel diffuser, while the light from the third light source 13 and the fourth light source 14 is directed towards the top surface of the panel diffuser. A lower camera 15 is located below the first light source 11 and the second light source 12, and an upper camera 16 is located above the third light source 13 and the fourth light source 14. The lower camera 15 and the upper camera 16 are connected to an AI recognition system 5. In this embodiment, the lower camera 15 and the upper camera 16 are Hikvision 16k line scanners. A gripper assembly 6 that can move left and right and rise and fall is located in the middle of the unloading bracket 2, and a collection box 7 is located on one side of the gripper assembly 6. A rise and fall stop plate 30 is located at the rear end of the roller conveyor frame 3. The roller conveyor frame 3 has multiple rollers 31 arranged at intervals along its length, and a drive motor 32 that drives the multiple rollers 31 to roll is located on the roller conveyor frame 3. The first light source 11, the second light source 12, the third light source 13, the fourth light source 14, the upper camera 16, the lower camera 15, the gripper assembly 6, the stop plate 30, and the drive motor 32 are all controlled by a control system 8, and the AI ​​recognition system 5 is connected to the control system 8.

[0028] Reference Figure 2 , Figure 3 and Figure 6The front end of the detection bracket 1 is provided with a mounting plate 17, and a photoelectric sensor 18 is connected to the top of the mounting plate 17. The photoelectric sensor 18 can sense through the gap between two adjacent rollers 31. The photoelectric sensor 18 is connected to the control system 8. Specifically, the mounting plate 17 is connected to the front end of the roller conveyor 3. When the photoelectric sensor 18 senses the panel diffuser sheet, the control system 8 receives the sensing information from the photoelectric sensor 18 and simultaneously controls the upper camera 16 and the lower camera 15 to start capturing images. While capturing images, the upper camera 16 and the lower camera 15 simultaneously transport the panel diffuser sheet by rolling multiple rollers 31. When the upper camera 16 captures an image, the first light source 11 and the fourth light source 14 use a time-division strobe method to provide the upper camera 16 with light sources at two alternating angles (90° and 45°) for imaging. The AI ​​recognition system 5 splits the image captured by the upper camera 16 into two images under different lighting conditions by dividing the row sequence. When the lower camera 15 captures an image, the second light source 12 and the third light source 13 use a time-division strobe method to provide the lower camera 15 with light sources at two alternating angles (45° and 90°) for imaging. The AI ​​recognition system 5 splits the image captured by the lower camera 15 into two images under different lighting conditions by dividing the row sequence. The upper camera 16 and the lower camera 15 send the top and bottom images of the panel diffuser sheet they respectively acquire to the AI ​​recognition system 5 for recognition.

[0029] Reference Figure 2 and Figure 3 The bottom of the detection bracket 1 is provided with a lower camera mounting bracket 19, the lower camera 15 is connected to the top of the lower camera mounting bracket 19, the top of the detection bracket 1 is provided with an upper camera mounting bracket 10, and the upper camera 16 is connected to the bottom of the upper camera mounting bracket 10.

[0030] Reference Figure 1 The testing bracket 1 has first door panels 100 on all four sides of its upper part and a first top plate 101 on its top. The first door panels 100 and the first top plate 101 form a darkroom on the upper part of the testing bracket 1. This darkroom can prevent the dispersion of light from the light source and keep the panel diffuser sheet in a relatively clean space during testing. The unloading bracket 2 has second door panels 200 on all four sides of its upper part and a second top plate 201 on its top. The second door panels 200 and the second top plate 201 also form a darkroom on the upper part of the unloading bracket 2. This darkroom allows the panel diffuser sheet to be kept in a relatively clean space during the transport process after testing.

[0031] Reference Figure 2 , Figure 4 and Figure 9The gripper assembly 6 includes a first linear slide module 61, a connecting seat 62, a second linear slide module 63, a suction cup mounting seat 64, and multiple suction cups 65. The first linear slide module 61 is disposed in the upper part of the unloading bracket 2 along the left-right direction. The connecting seat 62 is connected to the slide of the first linear slide module 61. The second linear slide module 63 is connected vertically to the rear end of the connecting seat 62. The suction cup mounting seat 64 is connected to the slide of the second linear slide module 63. The multiple suction cups 65 are mounted on the bottom of the suction cup mounting seat 64. The first linear slide module 61 and the second linear slide module 63 are controlled by the control system 8. The first linear slide module 61 is used to drive the connecting seat 62, the second linear slide module 63, the suction cup mounting seat 64, and the multiple suction cups 65 to move left and right. The second linear slide module 63 is used to drive the suction cup mounting seat 64 and the multiple suction cups 65 to move up and down, thereby realizing the left-right movement and up and down movement of the multiple suction cups 65. When the panel diffuser fails the test, the control system 8 controls the slide of the first linear slide module 61 to move to the right, and then controls the slide of the second linear slide module 63 to descend, allowing multiple suction cups 65 to hold the panel diffuser. Next, the control system 8 controls the slide of the second linear slide module 63 to rise, and then controls the slide of the first linear slide module 61 to move to the left. Finally, the control system 8 controls the slide of the second linear slide module 63 to descend, the multiple suction cups 65 detach from the panel diffuser, and the panel diffuser falls into the collection box 7 for collection.

[0032] Reference Figure 2 In this embodiment, a trolley 9 is provided on the left side of the feeding bracket 2, and the collection box 7 is placed on top of the trolley 9. The trolley 9 is used to place the collection box 7, and also facilitates the movement of the collection box 7 when it is full.

[0033] Reference Figure 2 , Figure 6 and Figure 9 The rear end of the roller conveyor frame 3 is equipped with a lifting cylinder 33, with the piston rod of the lifting cylinder 33 facing upwards. The stop plate 30 is connected to the piston rod of the lifting cylinder 33. When the piston rod of the lifting cylinder 33 rises, the stop plate 30 can rise through the gap between two adjacent rollers 31. The lifting cylinder 33 is controlled by the control system 8. When the panel diffuser sheet fails the test, the control system 8 controls the piston rod of the lifting cylinder 33 to drive the stop plate 30 to rise. The stop plate 30 stops the panel diffuser sheet that fails the test, and then multiple suction cups 65 grab the panel diffuser sheet that fails the test and put it into the collection box 7.

[0034] Reference Figure 5 and Figure 6The roller conveyor frame 3 includes multiple support frames 34 arranged front to back and two support plates 35 connected to the top of the support frames 34. The two support plates 35 are arranged left to right, and multiple rollers 31 are spaced apart between the two support plates 35. One end of each roller 31 is provided with a driven sprocket 36. A motor mounting frame 37 is provided between the bottoms of the two support plates 35. The drive motor 32 is mounted on the motor mounting frame 37. The output shaft of the drive motor 32 is connected to a main sprocket 38. The motor mounting frame 37 is also provided with two tension sprockets 39 arranged front to back. A chain passes around the main sprocket 38, the driven sprocket 36, and the two tension sprockets 39. The drive motor 32 drives the multiple rollers 31 to rotate simultaneously via the chain. Of course, the drive motor 32 can also be connected to the multiple rollers 31 in other ways, such as by using a belt drive.

[0035] Reference Figure 2 , Figure 5 , Figure 7 and Figure 8 The roller conveyor frame 3 has a baffle 300 at its rear, and a guide plate 301 inclined to the right at its front end. The baffle 300 and the guide plate 301 are located above the roller 31. Two connecting rods 302 arranged front to back are connected to the left side of the baffle 300. Two locking blocks 303 arranged front to back are provided on the top right end of the roller conveyor frame 3. Specifically, the two locking blocks 303 are located on the top rear end of the right support plate 35. Each locking block 303 corresponds to a connecting rod 302. The locking block 303 has a rod hole 304 through which the connecting rod 302 passes. Half of the locking block 303 has a cutout 305 communicating with the rod hole 304. The locking block 303 has a first bolt hole 306 and a first threaded hole (not shown in the figure due to view limitations). The first bolt hole 306 and the first threaded hole (not shown in the figure due to view limitations) are located above and below the cutout 305, respectively. A first bolt is threaded through the first bolt hole 306 and threaded into the first threaded hole (not shown in the figure due to view limitations). When the panel diffuser I flows into the latter half of the multiple rollers 31 after detection, the guide plate 301 guides the flow of the panel diffuser I. Under the guidance of the guide plate 301, the panel diffuser I flows between the baffle 300 and the left support plate 35, so that the panel diffuser I can flow out in a directional manner, while the gripper assembly 6 also has a fixed stroke when moving left and right. When the first bolt is tightened, the connecting rod 302 is clamped in the rod hole 304. When the first bolt is loosened, the rod hole 304 is also loosened. At this time, the connecting rod 302 can be moved left and right to adjust the position of the baffle 300 in the left and right direction to adapt to the panel diffuser I of different widths.

[0036] Reference Figures 1 to 9The design principle of this utility model is as follows: After the panel diffuser sheet enters the front roller 31 on the roller conveyor 3, the upper camera 16 and the lower camera 15 begin to capture images. While the multiple rollers 31 are rolling, the upper camera 16 and the lower camera 15 capture images simultaneously. When the upper camera 16 captures images, the first light source 11 and the fourth light source 14 use a time-division strobe method to provide the upper camera 16 with alternating light sources at two angles (90° and 45°) for imaging. The AI ​​recognition system 5 splits the image captured by the upper camera 16 into two images under different lighting conditions by separating the rows. The image is captured by the lower camera 15. The second light source 12 and the third light source 13 use a time-division strobe method to provide the lower camera 15 with alternating light sources at two angles (45° and 90°) for imaging. The AI ​​recognition system 5 splits the image captured by the lower camera 15 into two images under different lighting conditions. The upper camera 16 and the lower camera 15 send the top and bottom images of the panel diffuser sheet, respectively, to the AI ​​recognition system 5 for recognition. The AI ​​recognition system 5 performs AI recognition detection based on a pre-trained model. If the panel diffuser sheet passes the recognition detection, it proceeds to the next process. If the panel diffuser sheet fails the recognition detection, the stop plate 30 rises to stop the failed panel diffuser sheet, and multiple suction cups 65 then grab the failed panel diffuser sheet into the collection box 7.

[0037] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. An AI-based inspection device for appearance defects in panel diffusers, characterized in that: The system includes a detection bracket, a feeding bracket, and a roller conveyor. The detection bracket and the feeding bracket are arranged front to back, and the roller conveyor runs through both. A first light source, a second light source, a third light source, and a fourth light source are located in the middle of the detection bracket. The first and second light sources are located below the roller conveyor, and the third and fourth light sources are located above the roller conveyor. The first light source is vertically oriented upwards, the second light source is tilted backwards at a 45° angle, the third light source is vertically oriented downwards, and the fourth light source is tilted backwards at a 45° angle. A lower camera is located below the first and second light sources. An upper camera is positioned above the first and fourth light sources. The lower and upper cameras are connected to an AI recognition system. A gripper assembly that can move left and right and rise and fall is positioned in the middle of the unloading bracket. A collection box is positioned on one side of the gripper assembly. A liftable stop plate is positioned at the rear end of the roller conveyor. The roller conveyor has multiple rollers arranged at intervals along its length. A drive motor is mounted on the roller conveyor to drive the multiple rollers to roll. The first, second, third, and fourth light sources, the upper and lower cameras, the gripper assembly, the stop plate, and the drive motor are all controlled by a control system. The AI ​​recognition system is connected to the control system.

2. The AI ​​detection equipment for appearance defects of panel diffuser sheets as described in claim 1, characterized in that: The front end of the detection bracket is provided with a mounting plate, and a photoelectric sensor is connected to the top of the mounting plate. The photoelectric sensor can sense through the gap between two adjacent rollers, and the photoelectric sensor is connected to the control system.

3. The AI ​​detection equipment for appearance defects of panel diffuser sheets as described in claim 1, characterized in that: The bottom of the detection bracket is provided with a lower camera mounting bracket, and the lower camera is connected to the top of the lower camera mounting bracket. The top of the detection bracket is provided with an upper camera mounting bracket, and the upper camera is connected to the bottom of the upper camera mounting bracket.

4. The AI ​​detection equipment for appearance defects of panel diffuser sheets as described in claim 1, characterized in that: The testing bracket has a first door panel on all four sides of its upper part and a first top plate on its top. The unloading bracket has a second door panel on all four sides of its upper part and a second top plate on its top.

5. The AI ​​detection equipment for appearance defects of panel diffuser sheets as described in claim 1, characterized in that: The gripper assembly includes a first linear slide module, a connecting seat, a second linear slide module, a suction cup mounting seat, and multiple suction cups. The first linear slide module is disposed in the upper part of the unloading bracket along the left-right direction. The connecting seat is connected to the slide of the first linear slide module. The second linear slide module is connected to the rear end of the connecting seat along the vertical direction. The suction cup mounting seat is connected to the slide of the second linear slide module. The multiple suction cups are installed at the bottom of the suction cup mounting seat. The first and second linear slide modules are controlled by a control system.

6. The AI ​​detection equipment for appearance defects of panel diffuser sheets as described in claim 1, characterized in that: A trolley is provided inside the left side of the feeding bracket, and the collection box is placed on top of the trolley.

7. The AI ​​detection equipment for appearance defects of panel diffuser sheets as described in claim 1, characterized in that: The rear end of the roller conveyor is equipped with a lifting cylinder. The piston rod of the lifting cylinder faces upward. The stop plate is connected to the piston rod of the lifting cylinder. When the piston rod of the lifting cylinder rises, the stop plate can rise from the gap between two adjacent rollers. The lifting cylinder is controlled by a control system.

8. The AI ​​detection equipment for appearance defects of panel diffuser sheets as described in claim 1, characterized in that: The roller conveyor frame includes multiple support frames arranged front to back and two support plates connected to the top of the multiple support frames. The two support plates are arranged left to right. Multiple rollers are arranged front to back between the two support plates at intervals. One end of each roller is provided with a driven sprocket. A motor mounting frame is provided between the bottom of the two support plates. The drive motor is mounted on the motor mounting frame. The output shaft of the drive motor is connected to a main sprocket. The motor mounting frame is also provided with two tension sprockets arranged front to back. The main sprocket, the driven sprocket, and the two tension sprockets are for a chain to pass over.

9. The AI ​​detection equipment for appearance defects of panel diffuser sheets as described in claim 1, characterized in that: The rear of the roller conveyor frame is provided with a baffle, and the front end of the baffle is provided with a guide plate that tilts to the right.

10. The AI ​​detection equipment for appearance defects of panel diffuser sheets as described in claim 9, characterized in that: The left side of the baffle is connected to two connecting rods arranged in front and behind. The top right end of the roller conveyor frame is provided with two locking blocks arranged in front and behind, each locking block corresponding to a connecting rod. The locking block is provided with a rod hole for the connecting rod to pass through. Half of the locking block is provided with a cut that communicates with the rod hole. The locking block is provided with a first bolt hole and a first threaded hole. The first bolt hole and the first threaded hole are located above and below the cut, respectively. A first bolt is threaded through the first bolt hole and connected to the first threaded hole.

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