OLED flexible screen appearance defect detection device capable of eliminating dust adsorption

Abstract

The invention relates to the technical field of screen defect detection, in particular to an OLED flexible screen appearance defect detection device capable of eliminating dust adsorption, which comprises an outer shell and a plurality of high-definition industrial cameras arranged in the outer shell, and further comprises a first frame and a second frame, the first frame is movably arranged in the outer shell, and the second frame is movably arranged in the outer shell. The second frame can be driven by two pneumatic mechanisms arranged on the first frame to ascend and descend relative to the first frame. The adsorption roller is rotationally installed on the second frame and connected with a power-on and power-off control mechanism, and the first frame is further movably provided with a first cover body and a second cover body which can execute opening and closing actions; through cooperation of rotation of the adsorption roller, brushing and sweeping actions of the brush and the dust collection function of the external dust collector, dust on the surface of the adsorption roller can be efficiently removed, it is ensured that the adsorption roller can continue to keep good adsorption performance in the subsequent detection process, and the detection accuracy and reliability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of screen defect detection, and specifically to an appearance defect detection device for an OLED flexible screen that eliminates dust adsorption. Background Technique

[0002] The OLED flexible screen is an advanced display technology that uses organic light-emitting diode (OLED) materials and has the characteristics of self-luminescence, high contrast, wide color gamut, and fast response. This screen can be bent and folded, providing greater flexibility for device design. The OLED flexible screen is not only thin and light but also can achieve a better visual experience, and is suitable for various electronic products such as smart phones, smart watches, tablet computers, and wearable devices. With the development of technology, the OLED flexible screen is continuously optimized in terms of durability and cost-effectiveness, and has broad market application prospects. In the production of OLED flexible screens, in order to prevent defective products from entering the market, it is necessary to timely detect and remove screens with appearance defects such as scratches, different colors, bright spots, etc., so as to ensure the display effect and user experience of the products. Usually, a high-definition camera is used to detect the appearance of the screen. To avoid the irregular occlusion that may be formed on the screen surface by the dust attached to the screen, which may cause the detection device to misjudge that the screen has defects, before the formal detection, it is generally necessary to remove the dust on the screen surface.

[0003] For the removal of dust on the screen, of course, it is not suitable to adopt the wiping method, which is easy to damage and scratch the screen. Generally, the electrostatic adsorption method is selected, and it can remove dust without contacting the screen. Nowadays, an adsorption plate of a size equivalent to that of the screen is usually set. In order to achieve a stable adsorption effect, it is necessary to precisely control the voltage and electric field strength. However, as the area of the adsorption plate increases, the electric field distribution may become uneven. This uneven electric field distribution will lead to poor adsorption effect. If a smaller adsorption plate is used for dust suction, the dust thickness on the adsorption plate will gradually increase. Therefore, its dust adsorption ability will also gradually weaken, which may cause omissions and further interfere with the detection results. Summary of the Invention

[0004] The purpose of the present invention is to provide an appearance defect detection device for an OLED flexible screen that eliminates dust adsorption, so as to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution:

[0006] An appearance defect detection device for an OLED flexible screen that eliminates dust adsorption, including an outer shell and a plurality of high-definition industrial cameras provided in the outer shell, and further including:

[0007] A first frame and a second frame, the first frame is movably arranged inside the housing, and the second frame can be driven by two groups of pneumatic mechanisms arranged on the first frame to move up and down relative to the first frame;

[0008] An adsorption roller is rotatably installed on the second frame and is connected with a power-on and power-off control mechanism. A first cover and a second cover capable of performing an opening and closing action are also movably arranged on the first frame. After the adsorption roller moves between the first cover and the second cover, the first cover and the second cover perform a closing action. After the closing action is completed, the power-on and power-off control mechanism terminates the power-on state of the adsorption roller.

[0009] As a further solution of the present invention: the first cover and the second cover are arranged in an arc shape, and when the two are closed, a cylindrical cavity capable of accommodating the adsorption roller is formed. A long brush is installed on the inner wall of the first cover, and the second cover is connected with a pipeline, and the pipeline is connected with an external vacuum cleaner;

[0010] Wherein, two cross bars perpendicular to the space of the adsorption roller are fixed on the first frame, and the cross bars are slidably connected with lugs fixed on the first cover and the second cover.

[0011] As a further solution of the present invention: each of the two groups of pneumatic mechanisms is respectively connected with the first cover and the second cover through a group of transmission components. The pneumatic mechanism includes a link driving member installed on the side of the first frame and an opposite movement component arranged on the side of the second frame. The opposite movement component is connected with the link driving member and performs an opposite movement after the adsorption roller reaches between the first cover and the second cover.

[0012] As a further solution of the present invention: a slide rail is arranged on the side of the second frame. The opposite movement component includes two sliders symmetrically slidably arranged on the slide rail and a guide shaft fixed on the side of the second frame. The guide shaft penetrates through the two sliders and is slidably connected with the two sliders;

[0013] Wherein, a ring body is fixed on the guide shaft, and two first cylindrical springs are sleeved on the outer periphery of the guide shaft and are respectively located on both sides of the ring body. The head end of the first cylindrical spring is connected with the ring body, and the tail end is connected with the slider.

[0014] As a further solution of the present invention: the link driving member includes a cylinder installed on the side of the first frame and two pull rods hinged to the movable end of the cylinder, and one ends of the two pull rods far away from the movable end of the cylinder are respectively hinged to the two sliders.

[0015] As a further aspect of the present invention: The transmission assembly includes two vertical arms respectively fixed to the two sliders and two follower blocks slidably disposed on the first frame, and the follower blocks can slide on the first frame along the axial direction parallel to the adsorption roller;

[0016] Wherein, the two vertical arms are respectively slidably connected to the two follower blocks, the vertical arms can slide up and down relative to the follower blocks, and a limiting protrusion is further formed on the vertical arms, and the follower blocks are connected to the first cover body through a sliding fit structure.

[0017] As a further aspect of the present invention: The sliding fit structure includes a driving column fixed on the follower block and a driven plate member fixedly connected to the first cover body, and two inclined through grooves adapted to the driving column are symmetrically provided on the driven plate member, the two inclined through grooves are arranged in an "eight" shape, and the two driving columns respectively penetrate through the two inclined through grooves and are slidably connected to the driven plate member.

[0018] As a further aspect of the present invention: The power-on and power-off control mechanism includes a moving contact movably disposed on the second frame and a static contact mounted on the second frame, the moving contact is connected to an energy storage structure disposed on the second frame and can move along a direction perpendicular to the axial direction of the adsorption roller;

[0019] Wherein, the energy storage structure is connected to the driven plate member through a linkage assembly, and when the moving contact is docked with the static contact, the adsorption roller is in an energized state.

[0020] As a further aspect of the present invention: The energy storage structure includes a guiding cylinder movably disposed on the second frame and capable of moving along a direction perpendicular to the axial direction of the adsorption roller and a telescopic shaft slidably sleeved with the guiding cylinder, and a second cylindrical spring is further disposed in the guiding cylinder;

[0021] Wherein, one end of the second cylindrical spring is connected to the inner wall of the guiding cylinder, and the other end is connected to the head end of the telescopic shaft, and the moving contact is mounted on the tail end of the telescopic shaft.

[0022] As a further aspect of the present invention: The linkage assembly includes a transmission arm fixedly connected to the guiding cylinder and a connecting member fixed on the driven plate member, and the transmission arm penetrates through the connecting member and is slidably connected to the connecting member.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] This application realizes dust adsorption by cleverly controlling the movement and rotation of the adsorption roller. There is no need to set an adsorption plate equivalent to the size of the screen. During the dust removal process, after the adsorption roller completes one full rotation, the pneumatic mechanism can drive the adsorption roller to reach the predetermined positions of the first cover body and the second cover body, and the first cover body and the second cover body can form a cylindrical cavity. Subsequently, the electrical connection state between the static contact and the second moving contact is disconnected, and the adsorption roller loses its energized state. This change causes the adsorption roller located within the cylindrical cavity formed by the first cover body and the second cover body to lose its dust adsorption ability. This change in state is of great significance. On the one hand, it can promote the natural dropping of the dust adsorbed on the surface of the adsorption roller, facilitating cleaning; on the other hand, in conjunction with the rotation of the adsorption roller, the brushing action of the brush, and the dust suction function of the external vacuum cleaner, it can achieve efficient cleaning of the dust on the surface of the adsorption roller, ensuring that the adsorption roller can continue to maintain good adsorption performance during subsequent detection processes, improving the accuracy and reliability of the detection. Description of the Drawings

[0025] Figure 1 Structural schematic diagram of an embodiment of an OLED flexible screen appearance defect detection device for eliminating dust adsorption.

[0026] Figure 2 Structural schematic diagram of another angle of an embodiment of an OLED flexible screen appearance defect detection device for eliminating dust adsorption.

[0027] Figure 3 Internal structural schematic diagram of the outer housing of an embodiment of an OLED flexible screen appearance defect detection device for eliminating dust adsorption.

[0028] Figure 4 Internal structural schematic diagram of another angle of the outer housing of an embodiment of an OLED flexible screen appearance defect detection device for eliminating dust adsorption.

[0029] Figure 5 For Figure 4 Enlarged structural view of part A in

[0030] Figure 6 Schematic diagram of the connection relationship between the first frame and the second frame in an embodiment of an OLED flexible screen appearance defect detection device for eliminating dust adsorption.

[0031] Figure 7 For Figure 6 Structural schematic diagram of another angle.

[0032] Figure 8 Structural schematic diagram of the pneumatic mechanism in an embodiment of an OLED flexible screen appearance defect detection device for eliminating dust adsorption.

[0033] Figure 9 ForFigure 8 Schematic diagram of the structure from another angle.

[0034] Figure 10 Exploded view of the structure of the power-on and power-off control mechanism in an embodiment of an OLED flexible screen appearance defect detection device for eliminating dust adsorption.

[0035] In the figure: 1. Outer housing; 2. High-definition industrial camera; 3. First frame; 4. Second frame; 5. Adsorption roller; 6. First cover; 7. Second cover; 8. Brush; 9. Pipeline; 10. Cylinder; 11. Pull rod; 12. Guide shaft; 13. Ring body; 14. Slide block; 15. First cylindrical spring; 16. Vertical arm; 1601. Limit protrusion; 17. Follow-up block; 1701. Driving column; 18. Cross bar; 19. Lug; 20. Driven plate member; 2001. Inclined through slot; 21. Moving contact; 22. Static contact; 23. Guide cylinder; 24. Telescopic shaft; 25. Second cylindrical spring; 26. Transmission arm; 27. Connecting member. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037] In addition, an element in the present invention is referred to as being "fixed to" or "disposed on" another element, which can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manners.

[0038] Please refer to Figures 1 - 10 , in the embodiment of the present invention, an OLED flexible screen appearance defect detection device for eliminating dust adsorption includes an outer housing 1 and a plurality of high-definition industrial cameras 2 disposed in the outer housing 1, and further includes:

[0039] A first frame 3 and a second frame 4, the first frame 3 is movably disposed in the outer housing 1, and the second frame 4 can be driven by two sets of pneumatic mechanisms disposed on the first frame 3 to move up and down relative to the first frame 3;

[0040] The adsorption roller 5 is rotatably installed on the second frame 4 and is connected with a power-on and power-off control mechanism. A first cover 6 and a second cover 7 capable of performing opening and closing actions are also movably arranged on the first frame 3. After the adsorption roller 5 moves between the first cover 6 and the second cover 7, the first cover 6 and the second cover 7 perform a closing action. After the closing action is completed, the power-on and power-off control mechanism terminates the power-on state of the adsorption roller 5.

[0041] It should be noted that the first frame 3 can be driven by a lead screw (not labeled in the figure) arranged in the outer housing 1 to perform a linear motion. By using the thread fit between the lead screw and the first frame 3, the stability of the movement of the adsorption roller 5 can be effectively ensured, and thus the adsorption roller 5 can move in a direction perpendicular to its own central axis. In addition, a driving motor is installed on the side of the second frame 4, and the output end of the driving motor is connected to the rotating shaft of the adsorption roller 5.

[0042] The detection principle of this application is as follows: The screen to be detected is placed in the outer housing 1 and below the adsorption roller 5. When the adsorption roller 5 is in the powered-on state, it can effectively adsorb the dust attached to the screen. The specific operation process is that the first frame 3 drives the adsorption roller 5 to move in a direction perpendicular to its own central axis. At the same time, the driving motor drives the adsorption roller 5 to keep rotating continuously. However, during this process, it should be particularly noted that the rotation speed of the driving motor and the moving speed of the first frame 3 should not be too fast. This is because if the speed is too fast, the surface of the adsorption roller 5 cannot fully adsorb the dust at the moment of contact with the screen, thus affecting the adsorption effect. Therefore, in order to ensure that the surface of the adsorption roller 5 can fully adsorb the dust, it is necessary to reasonably control the rotation speed of the driving motor and the moving speed of the first frame 3.

[0043] This application realizes dust adsorption by cleverly controlling the movement and rotation of the adsorption roller 5, without the need to set an adsorption plate equivalent to the size of the screen. In order to achieve a stable adsorption effect, traditional adsorption plates need to precisely control the voltage and electric field strength. However, as the area of the adsorption plate increases, the electric field distribution may become uneven. This uneven electric field distribution will lead to poor adsorption effect, thereby affecting the accuracy of the detection results. In addition, a large-area adsorption plate will also bring the problem of high energy consumption. Since a stable electric field needs to be maintained, the energy consumption of the adsorption plate will increase significantly with the increase of the area. In contrast, the adsorption roller 5 scheme adopted in this application can not only effectively avoid the above problems, but also has the following beneficial effects: First, the movement and rotation of the adsorption roller 5 can make the dust more evenly distributed during the adsorption process, thereby improving the accuracy of the detection results; Second, the energy consumption of the adsorption roller 5 is relatively low, which can effectively reduce the energy consumption during the detection process.

[0044] In the detection device involved in this application, the high-definition industrial camera 2, as a key component, is equipped with an advanced automated detection system based on machine vision technology, which greatly improves the accuracy and efficiency of screen detection. Specifically, through the high-resolution industrial camera, combined with a high-precision optical lens and a professionally designed light source, this system can accurately collect high-definition images of the screen surface, ensuring that every detail can be clearly presented. Subsequently, the system uses advanced image processing algorithms and deep learning technology to deeply analyze the collected images, and can quickly and accurately identify and locate various defects, such as fine scratches, different-color spots, bright spots, etc., effectively avoiding the missed detection and misjudgment that may occur in manual detection.

[0045] This application effectively removes the dust attached to the screen through the adsorption roller 5, thereby effectively avoiding the adverse effects of screen dust adhesion on the detection results. Specifically, dust may form irregular obstructions on the screen surface, resulting in the detection device misjudging the screen to have defects, such as scratches, different colors, or bright spots. Therefore, before the appearance detection of the high-definition industrial camera 2, it is necessary to use the principle of electrostatic adsorption and dust removal to effectively remove the dust particles on the screen surface, ensuring the accuracy and reliability of the detection results.

[0046] In addition, the system also includes a powerful data management module for storing and analyzing each detection result. Through the statistics and analysis of a large amount of detection data, it can provide scientific and reliable basis for quality control in the production process, help enterprises promptly discover problems existing in the production link, so as to take corresponding improvement measures, optimize the production process, and thus effectively improve the overall quality and production efficiency of screen production. The entire system realizes high-precision and high-efficiency automated detection, not only reducing the labor intensity and human error of manual detection, but also greatly improving the detection speed and accuracy, bringing significant economic benefits and quality assurance to screen production enterprises, helping to enhance the competitiveness of enterprises in the market, and meeting the market demand for high-quality screen products.

[0047] Please refer to Figure 7 , the first cover body 6 and the second cover body 7 are arranged in an arc shape, and when the two are closed, a cylindrical cavity capable of accommodating the adsorption roller 5 is formed. A strip-shaped brush 8 is installed on the inner wall of the first cover body 6, and the second cover body 7 is connected with a pipeline 9, and the pipeline 9 is connected to an external vacuum cleaner;

[0048] Among them, two cross bars 18 perpendicular to the space of the adsorption roller 5 are fixed on the first frame 3, and the cross bars 18 are slidably connected with lugs 19 fixed on the first cover body 6 and the second cover body 7.

[0049] It should be noted that after the adsorption roller 5 completes one full rotation, its surface has been fully utilized. At this time, the pneumatic mechanism starts to work, driving the adsorption roller 5 to rise to a predetermined position between the first cover 6 and the second cover 7 (preferably, when the adsorption roller 5 is in the predetermined position and the first cover 6 and the second cover 7 are closed, the adsorption roller 5 is located at the center of the cylindrical cavity). As the adsorption roller 5 rises, the fluff on the brush 8 comes into contact with the outer wall of the adsorption roller 5. During this process, the two cross bars 18 play an important guiding role to ensure that the first cover 6 and the second cover 7 can move relative to each other smoothly and accurately. Subsequently, the first cover 6 and the second cover 7 are switched from the initial open state to the closed state, forming a closed cylindrical cavity that can accommodate the adsorption roller 5, providing a relatively closed space environment for subsequent cleaning operations. At the same time, the power-off control mechanism responds in a timely manner, switching the power-on state of the adsorption roller 5 to the power-off state to ensure that the adsorption roller 5 does not continue to adsorb dust during the cleaning process, avoiding affecting the cleaning effect.

[0050] It should be emphasized that the drive motor is a speed-regulating motor with the function of adjusting the speed. After the adsorption roller 5 enters the cylindrical cavity and is powered off, the drive motor increases its speed, driving the adsorption roller 5 to rotate rapidly in the cylindrical cavity. At this time, through the full contact between the brush 8 and the surface of the adsorption roller 5, the dust attached to the adsorption roller 5 is effectively brushed off. At the same time, the external vacuum cleaner is turned on, and the strong suction generated by it can timely suck away the dust in the cylindrical cavity, realizing the efficient cleaning of the adsorption roller 5. This cleaning process can not only effectively prevent a thick layer of dust from accumulating on the surface of the adsorption roller 5, thus preventing the problem of reduced dust absorption capacity, but also ensure that the adsorption roller 5 can continue to maintain good adsorption performance during subsequent detection, improving the accuracy and reliability of detection. In addition, by regularly performing such cleaning operations on the adsorption roller 5, its service life can be extended, the maintenance cost of the equipment can be reduced, and the operation efficiency and stability of the entire detection system can be improved.

[0051] Please refer to again Figures 6 - 9 , each of the two pneumatic mechanisms is respectively connected to the first cover 6 and the second cover 7 through a set of transmission components. The pneumatic mechanism includes a link driving member installed on the side of the first frame 3 and an opposite movement component provided on the side of the second frame 4. The opposite movement component is connected to the link driving member and undergoes opposite movement after the adsorption roller 5 reaches between the first cover 6 and the second cover 7.

[0052] The side portion of the second frame 4 is provided with a slide rail. The opposite movement assembly includes two sliders 14 symmetrically and slidably disposed on the slide rail, and a guide shaft 12 fixed to the side portion of the second frame 4. The guide shaft 12 penetrates through the two sliders 14 and is slidably connected to the two sliders 14;

[0053] Wherein, a ring body 13 is fixed on the guide shaft 12, and two first cylindrical springs 15 are sleeved on the outer periphery of the guide shaft 12 and are respectively located on both sides of the ring body 13. The head end of the first cylindrical spring 15 is connected to the ring body 13, and the tail end is connected to the slider 14. The link driving member includes a cylinder 10 installed on the side portion of the first frame 3 and two pull rods 11 hinged to the movable end of the cylinder 10. One ends of the two pull rods 11 away from the movable end of the cylinder 10 are respectively hinged to the two sliders 14.

[0054] The structures of the two sets of transmission assemblies are the same. In this regard, the transmission assembly connected to the first cover 6 will be described in detail below:

[0055] The transmission assembly includes two vertical arms 16 respectively fixed on the two sliders 14 and two follower blocks 17 slidably disposed on the first frame 3. The follower blocks 17 can slide on the first frame 3 along the axial direction parallel to the adsorption roller 5. The two vertical arms 16 are respectively slidably connected to the two follower blocks 17. The vertical arm 16 can slide up and down relative to the follower block 17. A limit protrusion 1601 is further formed on the vertical arm 16. The follower block 17 is connected to the first cover 6 through a sliding fit structure.

[0056] When it is necessary to clean the dust-laden adsorption roller 5, the cylinder 10 works, and the movable end of the cylinder 10 contracts. The second frame 4 is pulled by the pull rod 11, the slider 14 and the guide shaft 12 to drive the adsorption roller 5 to rise. During this process, under the elastic support of the first cylindrical spring 15, the slider 14 and the second frame 4 remain relatively stationary in the direction parallel to the axial direction of the adsorption roller. After the adsorption roller 5 reaches the predetermined positions of the first cover body 6 and the second cover body 7, that is, the limit protrusion 1601 abuts against the follower block 17. As the movable end of the cylinder 10 continues to contract, the movable end of the cylinder 10 will pull the slider 14 to gradually slide towards the ring body 13 through the pull rod 11, that is, the two sliders 14 move closer to each other. Correspondingly, the first cylindrical spring 15 is compressed. The slider 14 drives the follower block 17 to slide on the first frame 3 through the vertical arm 16, that is, the two follower blocks 17 slide closer to each other. Furthermore, the follower block 17 can drive the first cover body 6 (the second cover body 7) to move closer to the adsorption roller 5 through the sliding fit structure until the first cover body 6 and the second cover body 7 are closed to form a cylindrical cavity for accommodating the adsorption roller 5, providing a relatively enclosed space interval for the subsequent cleaning of the adsorption roller 5, effectively avoiding the diffusion of dust to the surrounding environment during the cleaning process, and at the same time ensuring the high efficiency and thoroughness of the cleaning process, ensuring that the adsorption roller 5 can be fully cleaned, thereby maintaining its good adsorption performance and providing a reliable guarantee for the subsequent detection work.

[0057] The sliding fit structure includes a driving column 1701 fixedly arranged on the follower block 17 and a driven plate member 20 fixedly connected to the first cover body 6. Two inclined through grooves 2001 adapted to the driving column 1701 are symmetrically arranged on the driven plate member 20. The two inclined through grooves 2001 are arranged in an "eight" shape. The two driving columns 1701 respectively penetrate through the two inclined through grooves 2001 and are slidably connected to the driven plate member 20.

[0058] When the limiting protrusion 1601 abuts against the follower block 17, it indicates that the adsorption roller 5 has accurately reached the predetermined position between the first cover body 6 and the second cover body 7. At this time, with the continuous contraction of the movable end of the cylinder 10, that is, during the process of the two follower blocks 17 moving closer to each other, the driving column 1701 is in close sliding fit with the driven plate member 20 through the inclined through groove 2001. This sliding fit action prompts the driven plate member 20 to drive the first cover body 6 (second cover body 7) to make way, so that the first cover body 6 (second cover body 7) both move towards the direction close to the adsorption roller 5. Finally, when the first cover body 6 and the second cover body 7 are completely closed, a closed cylindrical cavity is formed, which provides convenient conditions for the subsequent cleaning process of the adsorption roller 5, ensures that the cleaning process can be efficiently carried out in a closed and stable space, effectively avoids dust overflow, and at the same time ensures the thoroughness and uniformity of the cleaning effect, thereby maintaining the good performance of the adsorption roller 5 and providing a strong guarantee for the subsequent detection work.

[0059] Please refer to again Figure 9 And Figure 10 , the power on-off control mechanism includes a moving contact 21 movably arranged on the second frame 4 and a static contact 22 installed on the second frame 4. The moving contact 21 is connected to an energy storage structure arranged on the second frame 4 and can move along the axial direction perpendicular to the adsorption roller 5;

[0060] Wherein, the energy storage structure is connected to the driven plate member 20 through a linkage assembly. When the moving contact 21 is docked with the static contact 22, the adsorption roller 5 is in an energized state.

[0061] Furthermore, since during operation, the adsorption roller 5 has a self-rotation action and also needs to remain in an energized state to maintain the adsorption of dust, for this reason, the electrical connection between the moving contact 21 and the adsorption roller 5 adopts a brushless structure.

[0062] The energy storage structure includes a guide cylinder 23 movably arranged on the second frame 4 and capable of moving along the axial direction perpendicular to the adsorption roller 5 and a telescopic shaft 24 slidably sleeved with the guide cylinder 23. A second cylindrical spring 25 is also arranged in the guide cylinder 23. One end of the second cylindrical spring 25 is connected to the inner wall of the guide cylinder 23, and the other end is connected to the head end of the telescopic shaft 24. The moving contact 21 is installed at the tail end of the telescopic shaft 24. The linkage assembly includes a transmission arm 26 fixedly connected to the guide cylinder 23 and a connecting member 27 fixed on the driven plate member 20. The transmission arm 26 penetrates through the connecting member 27 and is slidably connected to the connecting member 27.

[0063] To attach Figure 6Taking the shown state as an example, at this time, the second cylindrical spring 25 is in a compressed state, and this compressed state provides a stable elastic supporting force for the system. Under the action of this force, the moving contact 21 is inserted into the static contact 22, and the two are closely matched to achieve a good electrical connection. At this time, the adsorption roller 5 is in an energized state. Due to the stability of the electrical connection, the adsorption roller 5 can work normally and has a strong adsorption capacity for dust. At the same time, precisely under the elastic support of the second cylindrical spring 25, even when there may be vibrations or slight displacements during the operation of the adsorption roller 5, it can ensure the stability of the electrical connection between the moving contact 21 and the static contact 22, and there will be no problems of poor contact or power-off, thus ensuring that the adsorption roller 5 can continuously and stably play its function of adsorbing dust, providing a reliable guarantee for the smooth progress of the entire detection process, effectively avoiding the problem of the reduction or failure of the dust absorption capacity of the adsorption roller 5 caused by unstable electrical connection, and ensuring the accuracy and reliability of the detection results;

[0064] During the process of the adsorption roller 5 reaching the predetermined position between the first cover body 6 and the second cover body 7, the second frame 4 plays a key role. It drives the transmission arm 26 to slide upward relative to the connecting member 27. When the adsorption roller 5 accurately reaches the predetermined position, it then enters the stage where the first cover body 6 and the second cover body 7 are closed. In this stage, that is, during the process of the driven plate member 20 driving the first cover body 6 towards the adsorption roller 5, the driven plate member 20 will drive the guide cylinder 23 to gradually move away from the static contact 22 through the linkage of the connecting member 27 and the transmission arm 26. Correspondingly, as the guide cylinder 23 moves, the compression amount of the second cylindrical spring 25 gradually decreases. However, even when the compression amount decreases, due to the elastic support of the second cylindrical spring 25, the moving contact 21 and the static contact 22 still remain connected. The maintenance of this connection state ensures that the adsorption roller 5 is always in an energized state and has an adsorption capacity for dust before the first cover body 6 and the second cover body 7 are closed.

[0065] When the first cover body 6 and the second cover body 7 are completely closed, a closed cylindrical cavity is formed. At this time, the compression amount of the second cylindrical spring 25 is zero, that is, the spring returns to its natural state. Subsequently, the electrical connection state between the static contact 21 and the second moving contact 22 is disconnected, and the adsorption roller 5 loses its energized state. This change causes the adsorption roller 5 located in the cylindrical cavity formed by the first cover body 6 and the second cover body 7 to lose its dust adsorption ability. This change in state is of great significance. On the one hand, it can promote the natural fall of the dust adsorbed on the surface of the adsorption roller 5, facilitating cleaning; on the other hand, in cooperation with the rotation of the adsorption roller 5, the brushing action of the brush 8, and the dust suction function of the external vacuum cleaner, efficient cleaning of the dust on the surface of the adsorption roller 5 can be achieved. Through this synergistic effect, not only can the dust on the adsorption roller 5 be completely removed, but also it can ensure that the adsorption roller 5 can continue to maintain good adsorption performance during subsequent detection processes, improving the accuracy and reliability of detection. At the same time, it also helps to extend the service life of the adsorption roller 5 and reduce the maintenance cost of the equipment.

[0066] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0067] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An OLED flexible screen appearance defect detection device for eliminating dust adsorption, comprising a housing and a plurality of high-definition industrial cameras disposed within the housing; It is characterized in that It further includes: A first frame and a second frame, the first frame is movably disposed within the housing, and the second frame can be driven by two sets of pneumatic mechanisms disposed on the first frame to move up and down relative to the first frame; An adsorption roller, rotatably mounted on the second frame and connected with a power on / off control mechanism. A first cover body and a second cover body capable of performing an opening and closing action are also movably disposed on the first frame. After the adsorption roller moves between the first and second cover bodies, the first and second cover bodies perform a closing action. After the closing action is completed, the power on / off control mechanism terminates the power-on state of the adsorption roller.

2. The OLED flexible screen appearance defect detection device for eliminating dust adsorption according to claim 1, wherein, The first cover body and the second cover body are arranged in an arc shape, and when the two are closed, a cylindrical cavity capable of accommodating the adsorption roller is formed. A long strip-shaped brush is installed on the inner wall of the first cover body, and the second cover body is connected with a pipeline, and the pipeline is connected with an external vacuum cleaner; Wherein, two cross bars perpendicular to the space of the adsorption roller are fixed on the first frame, and the cross bars are slidably connected with lugs fixed on the first cover body and the second cover body.

3. The OLED flexible screen appearance defect detection device for eliminating dust adsorption according to claim 2, wherein, The two sets of pneumatic mechanisms are respectively connected with the first cover body and the second cover body through a set of transmission components. The pneumatic mechanism includes a connecting rod driving member installed on the side of the first frame and an opposite movement component disposed on the side of the second frame. The opposite movement component is connected with the connecting rod driving member and performs an opposite movement after the adsorption roller reaches between the first cover body and the second cover body.

4. The OLED flexible screen appearance defect detection device for eliminating dust adsorption according to claim 3, characterized in that, A slide rail is disposed on the side of the second frame. The opposite movement component includes two sliders symmetrically slidably disposed on the slide rail and a guide shaft fixed on the side of the second frame. The guide shaft penetrates through the two sliders and is slidably connected with the two sliders; Wherein, a ring body is fixed on the guide shaft, and two first cylindrical springs are sleeved on the outer periphery of the guide shaft and are respectively located on both sides of the ring body. The head end of the first cylindrical spring is connected with the ring body, and the tail end is connected with the slider.

5. The dust adsorption elimination OLED flexible screen appearance defect detection device according to claim 4, wherein, The connecting rod driving member includes a cylinder installed on the side of the first frame and two pull rods hinged to the movable end of the cylinder. One ends of the two pull rods far away from the movable end of the cylinder are respectively hinged with the two sliders.

6. The OLED flexible screen appearance defect detection device for eliminating dust adsorption according to claim 4, wherein, The transmission component includes two vertical arms respectively fixed on the two sliders and two follower blocks slidably disposed on the first frame. The follower blocks can slide on the first frame along the axial direction parallel to the adsorption roller; Wherein, the two vertical arms are respectively slidably connected with the two follower blocks, the vertical arms can slide up and down relative to the follower blocks, a limiting protrusion is further formed on the vertical arms, and the follower blocks are connected with the first cover body through a sliding fit structure.

7. The OLED flexible screen appearance defect detection device for eliminating dust adsorption according to claim 6, wherein The sliding fit structure includes a driving column fixedly arranged on the follower block and a driven plate member fixedly connected to the first housing. Two inclined through grooves adapted to the driving column are symmetrically arranged on the driven plate member. The two inclined through grooves are arranged in an "eight" shape. The two driving columns respectively penetrate through the two inclined through grooves and are slidably connected to the driven plate member.

8. The OLED flexible screen appearance defect detection device for eliminating dust adsorption according to claim 7, wherein, The power on / off control mechanism includes a moving contact movably arranged on the second frame and a static contact mounted on the second frame. The moving contact is connected to an energy storage structure arranged on the second frame and can move along the axial direction perpendicular to the adsorption roller. Wherein, the energy storage structure is connected to the driven plate member through a linkage assembly. When the moving contact is docked with the static contact, the adsorption roller is in an energized state.

9. The OLED flexible screen appearance defect detection device for eliminating dust adsorption according to claim 8, characterized in that, The energy storage structure includes a guide cylinder movably arranged on the second frame and capable of moving along the axial direction perpendicular to the adsorption roller, and a telescopic shaft slidably sleeved with the guide cylinder. A second cylindrical spring is also arranged in the guide cylinder. Wherein, one end of the second cylindrical spring is connected to the inner wall of the guide cylinder, and the other end is connected to the head end of the telescopic shaft. The moving contact is mounted on the tail end of the telescopic shaft.

10. The OLED flexible screen appearance defect detection device for eliminating dust adsorption according to claim 9, characterized in that, The linkage assembly includes a transmission arm fixedly connected to the guide cylinder and a connecting member fixed on the driven plate member. The transmission arm penetrates through the connecting member and is slidably connected to the connecting member.

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