OLED screen AOI detection equipment and application thereof in OLED production

Abstract

The invention relates to the technical field of OLED screen production, in particular to OLED screen AOI detection equipment and application thereof in OLED production, the OLED screen AOI detection equipment comprises a first conveying line and a second conveying line which are arranged side by side and a plurality of cameras arranged on the first conveying line, and the OLED screen AOI detection equipment further comprises a transverse moving seat movably arranged above the first conveying line and the second conveying line, the transverse moving base can move in the conveying direction perpendicular to the screen, and a plurality of suction cups connected with a set of negative pressure suction mechanisms respectively are movably arranged below the transverse moving base. The multiple suction cups can execute expansion or folding actions, due to the characteristic, the equipment can easily adapt to screens of different specifications, different adsorption equipment does not need to be replaced or complex adjustment does not need to be conducted, the multiple through holes which are distributed in the circumferential direction and are gradually increased in diameter are formed in the pipeline, and the gradual pressure relief function is achieved through rotation of the suite. Compared with an instant pressure relief mode, the pressure relief device has remarkable advantages in the aspects of safety, stability and applicability.

Description

Technical Field

[0001] The present invention relates to the technical field of OLED screen production, and in particular to an OLED screen AOI detection device and its application in OLED production. Background Art

[0002] OLED screen is an advanced display technology. It is composed of layers of organic materials that emit light when current passes through them, without the need for a backlight, which allows the screen to be made thinner and lighter. OLED screens have excellent contrast because the black pixels do not emit light at all, presenting pure black, and the colors are also extremely bright and vivid. It has a fast response speed, can effectively reduce motion blur, and provides good support for high-speed dynamic picture display.

[0003] In the production of OLED screens, AOI inspection is an essential process. Its purpose is to detect pixel anomalies, bright spots, dark spots, Mura and other defects as early as possible, and to remove unqualified products in time to reduce production costs. At the same time, through the analysis of inspection data, it provides a basis for the optimization of production processes and sorts out unqualified screens.

[0004] When sorting unqualified screens, it is necessary to use the corresponding transfer device. In order to avoid screen scratches, negative pressure suction is usually selected, that is, the negative pressure suction principle of the suction cup is used to suck up and transfer the screen. However, the general single-point adsorption is easy to cause excessive local adsorption force of the screen and cause damage to the screen. Alternatively, a multi-point adsorption method is used, but the distribution of the suction cup is fixed, which is difficult to adapt to screens of different specifications. It is often necessary to replace different adsorption devices according to the screen or make complex adjustments, which is insufficient in applicability;

[0005] In addition, the existing negative pressure suction equipment usually has the pressure relief valve open instantly when releasing the screen. Although it has the characteristics of fast response and high efficiency, the instantaneous pressure relief may cause a greater impact on the screen or suction cup due to the rapid pressure change. It is difficult to avoid the risks brought about by sudden pressure changes caused by instantaneous pressure relief, and there are deficiencies in safety and stability. Summary of the invention

[0006] The purpose of the present invention is to provide an OLED screen AOI detection device and its application in OLED production to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An OLED screen AOI inspection device includes a first conveyor line and a second conveyor line arranged side by side and a plurality of cameras arranged on the first conveyor line, and further includes:

[0009] A transverse shift seat is movably arranged above the first conveying line and the second conveying line, the transverse shift seat can move along a conveying direction perpendicular to the screen, and a plurality of suction cups are movably arranged below the transverse shift seat, and the plurality of suction cups can be driven by an opening and closing driving mechanism to perform an expansion or closing action;

[0010] The stabilizing mechanism can press the screen when the screen detected as unqualified by the camera reaches the second conveying line, and prompt the negative pressure suction mechanism to release the negative pressure state.

[0011] As a further solution of the present invention: two cylinders are installed on the transverse shift seat, a disc is fixed to the movable end of the cylinder, an assembly frame arranged in a "cross" shape is fixed below the disc through multiple connecting arms, and the opening and closing drive mechanism is installed on the disc.

[0012] As a further solution of the present invention: the opening and closing drive mechanism includes a plurality of movable seats slidably arranged on the assembly frame, the plurality of movable seats are equidistantly distributed along the circumference, and are connected to a threaded drive assembly arranged between the disc and the assembly frame, and the negative pressure suction mechanism is arranged on the movable seat.

[0013] As a further solution of the present invention: the threaded drive assembly includes a screw rod rotatably installed between the disc and the assembly frame, and a threaded sleeve sleeved on the screw rod and threadedly connected to the screw rod, the threaded sleeve is respectively connected to the multiple movable seats through multiple first connecting rods, the two ends of the first connecting rod are respectively hinged to the threaded sleeve and the movable seat, and the screw rod can be driven to rotate by a driving motor installed on the disc.

[0014] As a further solution of the present invention: the suction cup is connected to a negative pressure suction mechanism, which includes a negative pressure pump and a pipeline arranged on the negative pressure pump, and the suction cup is installed at one end of the pipeline away from the negative pressure pump.

[0015] As a further solution of the present invention: a plurality of conducting holes are provided on the pipeline, the plurality of conducting holes are distributed along the circumferential direction and the diameters gradually increase, a kit is sealingly and rotatably installed on the pipeline, the kit is provided with a through hole, and the diameter of the through hole is larger than the diameter of the conducting hole.

[0016] As a further solution of the present invention: a first plate is fixed to the side of the movable seat, a second plate is fixed to the lower part of the first plate, and the first plate and the second plate are both hollow;

[0017] The kit is connected to the stabilizing mechanism via a transmission mechanism, the transmission mechanism comprising a transmission shaft rotatably mounted in the second plate and connected to the kit via a transmission belt, and a second slider slidably provided in the second plate and slidably connected to the transmission shaft, the second slider being connected to the stabilizing mechanism;

[0018] Among them, a convex column is fixed on the second sliding block, and the outer wall of the transmission shaft is provided with a groove adapted to the convex column, the convex column extends into the groove and is slidably connected with the transmission shaft, and the groove includes a first groove body and a second groove body connected to each other, the first groove body is arranged along the axial direction of the transmission shaft, and the second groove body is arranged in a spiral shape.

[0019] As a further solution of the present invention: the stabilizing mechanism includes a first slider slidably arranged in the first plate and an elastic telescopic member connecting the second slider and the first slider, and the first slider can be driven by a threaded driving member arranged in the first plate to slide closer to or away from the movable seat.

[0020] As a further solution of the present invention: the elastic telescopic member includes a guide cylinder fixedly connected to the second slider and a telescopic rod slidably sleeved with the guide cylinder, a second connecting rod is provided between the guide cylinder and the first slider, and two ends of the second connecting rod are respectively hinged to the first slider and the guide cylinder;

[0021] A cylindrical spring is also provided in the guide cylinder, and two ends of the cylindrical spring are respectively connected to the inner wall of the guide cylinder and the head end of the telescopic rod, and a pressing head is fixed to the tail end of the telescopic rod.

[0022] An application of the OLED screen AOI detection device in OLED production uses the OLED screen AOI detection device as described above.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present application realizes multi-point adsorption of the screen by setting multiple suction cups. Compared with the traditional single-point adsorption method, multi-point adsorption can significantly enhance the adsorption stability of the screen surface. Multiple suction cups can perform expansion or closing actions. This feature enables the device to easily adapt to screens of different specifications without replacing different adsorption devices or making complicated adjustments.

[0025] The gradual pressure relief function of the present application shows significant advantages in terms of safety. Since the negative pressure value is slowly reduced, the screen will not suddenly fall off due to the instantaneous loss of adsorption force, effectively avoiding the risks of falling, collision, etc. caused by instantaneous pressure relief. In terms of stability, the gradual pressure relief can ensure that the screen always remains stable during the release process.

[0026] In terms of applicability, the gradual pressure relief design of the present application can adapt to different types of screens and different working scenarios. Whether it is for a thinner and lighter screen or a thicker and heavier screen, a gradual and stable pressure relief effect can be achieved by gradually adjusting the conduction of the conduction hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is an axonometric diagram of an embodiment of OLED screen AOI inspection equipment.

[0028] Figure 2 This is a structural schematic diagram of an embodiment of OLED screen AOI inspection equipment.

[0029] Figure 3 This is a structural schematic diagram of another angle of an embodiment of OLED screen AOI inspection equipment.

[0030] Figure 4 This is a structural schematic diagram of an embodiment of OLED screen AOI inspection equipment from another angle.

[0031] Figure 5 for Figure 3 A magnified view of the structure at center.

[0032] Figure 6 for Figure 4 A magnified view of the structure at point B.

[0033] Figure 7 This is a schematic diagram of the distribution of multiple suction cups in an embodiment of OLED screen AOI inspection equipment.

[0034] Figure 8 for Figure 7 Schematic diagram of the structure from another angle.

[0035] Fig. 9 This is a structural schematic diagram of the opening and closing drive rod mechanism in one embodiment of the OLED screen AOI inspection equipment.

[0036] Fig.10 This is a structural explosion diagram of the stabilization mechanism in one embodiment of the OLED screen AOI inspection equipment.

[0037] Fig.11 for Fig.10 Schematic diagram of the structure from another angle.

[0038] In the figure: 1. first conveyor line; 2. second conveyor line; 3. frame; 4. transverse seat; 5. cylinder; 6. disc; 7. connecting arm; 8. assembly frame; 9. driving motor; 10. screw rod; 11. threaded sleeve; 12. first connecting rod; 13. movable seat; 14. first plate; 15. second plate; 16. negative pressure pump; 17. pipeline; 1701. conducting hole; 18. suction cup; 19. first slider; 20. second connecting rod; 21. second slider; 2101. boss; 22. transmission shaft; 2201. first slot; 2202. second slot; 23. kit; 2301. through hole; 24. transmission belt; 25. cylindrical spring; 26. guide cylinder; 27. telescopic rod; 28. camera. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0041] See also Figure 1-Figure 11 In an embodiment of the present invention, an OLED screen AOI detection device includes a first conveyor line 1 and a second conveyor line 2 arranged side by side and a plurality of cameras 28 arranged on the first conveyor line 1, wherein the camera 28 is a high-definition industrial camera, and a processing system for performing AOI detection on the screen using a high-definition industrial camera is mainly composed of an optical imaging unit, an image acquisition and transmission unit, a data processing unit, a software analysis system, and an output and feedback mechanism. The optical imaging unit includes a high-definition industrial camera, a lens, and a light source, and is responsible for collecting high-definition images of the screen. The image acquisition and transmission unit quickly transmits the image data to the data processing unit, usually based on high-performance computing hardware such as GPU or FPGA to achieve real-time processing. The software analysis system performs preprocessing, feature extraction and matching, defect recognition, and other operations on the image through a preset algorithm. Finally, the system outputs the detection results and can be linked with the production equipment to achieve real-time feedback and automatic adjustment.

[0042] The OLED screen AOI inspection equipment also includes:

[0043] A transverse shift seat 4 is movably arranged above the first conveying line 1 and the second conveying line 2. The transverse shift seat 4 can move along a conveying direction perpendicular to the screen, and a plurality of suction cups 18 respectively connected to a group of negative pressure suction mechanisms are movably arranged below the transverse shift seat 4. The plurality of suction cups 18 can be driven by an opening and closing driving mechanism to perform an expansion or closing action;

[0044] The stabilizing mechanism can press the screen when the screen detected as unqualified by the camera 28 reaches the second conveying line 2, and prompt the negative pressure suction mechanism to release the negative pressure state.

[0045] Furthermore, the camera 28 performs AOI inspection on the OLED screen. When the unqualified screen reaches the bottom of the multiple suction cups 18 accurately, these suction cups 18 will play a key role. They will work together to use appropriate suction force to steadily suck up the unqualified screen. This process not only avoids the secondary damage that may be caused by manual operation, but also greatly improves the efficiency and accuracy of sorting. Subsequently, the suction cups 18 will quickly and smoothly transfer the unqualified screen to the second conveyor line 2 according to the preset path, thereby achieving efficient and accurate sorting of unqualified products.

[0046] In detail, the preset path described above is realized by a frame 3 provided on the first conveyor line 1 and the second conveyor line 2, and the frame 3 includes two side plates respectively fixed to the outer sides of the first conveyor line 1 and the second conveyor line 2 and two guide rods fixed between the two side plates, and the transverse shift seat 4 is slidably provided on the two guide rods and can be driven by an external hydraulic cylinder to slide along the axial direction of the guide rods, thereby realizing the switching of multiple suction cups 18 above the first conveyor line 1 and the second conveyor line 2, that is, the suction cups 18 can drive unqualified OLED screens to move along the preset path for sorting.

[0047] Please refer again Figure 5 Two cylinders 5 are installed on the transverse shift seat 4, and a disc 6 is fixed to the movable end of the cylinder 5. An assembly frame 8 arranged in a "cross" shape is fixed below the disc 6 through multiple connecting arms 7, and the opening and closing drive mechanism is installed on the disc 6.

[0048] Specifically, two cylinders 5 are installed on the transverse seat 4. Such a configuration can provide stable and sufficient power support for subsequent actions. A disc 6 is fixed to the movable end of the cylinder 5. The disc 6 can realize the corresponding motion trajectory under the drive of the cylinder 5, so that when the screen is sucked and released, the suction cup 18 can move down to contact the screen surface and move down so that the screen is placed on the second conveyor line 2. Furthermore, an assembly frame 8 arranged in a "cross" shape is fixed below the disc 6 through multiple connecting arms 7. This unique layout enables the assembly frame 8 to have better stability and balance in space. In addition, the opening and closing drive mechanism is installed on the disc 6, which can accurately control the opening and closing movements of multiple suction cups 18 on the assembly frame 8.

[0049] Please refer again Figure 5 and Figure 6 The opening and closing driving mechanism includes a plurality of movable seats 13 slidably arranged on the assembly frame 8, the plurality of movable seats 13 are equidistantly distributed along the circumference, and are connected to a threaded driving assembly arranged between the disc 6 and the assembly frame 8, and the negative pressure suction mechanism is arranged on the movable seat 13. The threaded driving assembly includes a screw rod 10 rotatably installed between the disc 6 and the assembly frame 8, and a threaded sleeve 11 sleeved on the screw rod 10 and threadedly connected to the screw rod 10, the threaded sleeve 11 is respectively connected to the plurality of movable seats 13 through a plurality of first connecting rods 12, the two ends of the first connecting rod 12 are respectively hinged to the threaded sleeve 11 and the movable seat 13, and the screw rod 10 can be driven to rotate by a driving motor 9 installed on the disc 6.

[0050] Furthermore, the driving motor 9 is a servo motor with a bidirectional drive output end. When working, the driving motor 9 drives the screw rod 10 to rotate forward or reverse, so that the threaded sleeve 11 and the screw rod 10 are threadedly matched to rise or fall;

[0051] When the threaded sleeve 11 descends, the first connecting rod 12 will push the movable seat 13 to slide on the assembly frame 8 away from the screw rod 10, so that the multiple suction cups 18 can perform an expansion action. On the contrary, when the threaded sleeve 11 rises, the first connecting rod 12 will pull the movable seat 13 to slide on the assembly frame 8 close to the screw rod 10, so that the multiple suction cups 18 perform a closing action. Then, through the precision and stability of the threaded matching drive, the synchronous adjustment of the positions of the multiple suction cups 18 is achieved. During actual inspection and sorting, the coverage of the multiple suction cups 18 can be adjusted according to the actual size of the screen to be inspected;

[0052] In summary, the present application realizes multi-point adsorption of the screen by setting a plurality of suction cups 18. Compared with the traditional single-point adsorption method, the multi-point adsorption can significantly enhance the adsorption stability of the screen surface, ensure that the screen always remains stable during the detection and sorting process, and effectively reduce the detection error or sorting error caused by the shaking or displacement of the screen. At the same time, the multi-point adsorption can also ensure that the adsorption force on the screen surface is evenly distributed, avoiding the screen falling off due to insufficient local adsorption force, or causing indentation or damage to the screen surface due to excessive local adsorption force, and effectively protects the integrity and appearance quality of the screen.

[0053] In addition, multiple suction cups 18 can perform expansion or closing actions. This feature enables the device to easily adapt to screens of different specifications without replacing different adsorption devices or making complicated adjustments, which greatly improves work efficiency and reduces production costs, providing a more convenient, efficient and reliable solution for screen detection and sorting.

[0054] Please refer again Fig.10 and Fig.11 The negative pressure suction mechanism includes a negative pressure pump 16 mounted on the movable seat 13 and a pipeline 17 disposed on the negative pressure pump 16, and the suction cup 18 is mounted on one end of the pipeline 17 away from the negative pressure pump 16. The pipeline 17 is provided with a plurality of conducting holes 1701, which are distributed along the circumferential direction and have gradually increasing diameters. A set 23 is sealed and rotatably mounted on the pipeline 17, and a through hole 2301 is disposed on the set 23, and the diameter of the through hole 2301 is greater than the diameter of the through hole 1701. The set 23 is connected to the stabilizing mechanism through a transmission mechanism.

[0055] Specifically, when the screen is adsorbed, the through hole 2301 and the plurality of conductive holes 1701 are staggered. At this time, the kit 23 blocks the plurality of conductive holes 1701. When the unqualified screen reaches the second conveyor line 2, the stabilizing mechanism starts to work, which applies a small pressure to the screen. Accordingly, the transmission mechanism drives the kit 23 to rotate. Then, the through hole 2301 will be aligned with the plurality of conductive holes 1701 (from small to large) one by one. Therefore, the contact process of the negative pressure state in the suction cup 18 realizes gradual pressure relief to release the suction state of the suction cup 18 on the screen. At the same time, under the action of the stabilizing mechanism, it is conducive to the smooth separation of the suction cup 18 from the screen.

[0056] In general, compared with the traditional instantaneous pressure relief method, the gradual pressure relief function of the present application shows significant advantages in terms of safety. Since the negative pressure value is slowly reduced, the screen will not suddenly fall off due to the instantaneous loss of adsorption force, which effectively avoids the risk of falling and collision of the screen due to instantaneous pressure relief. Especially for some high-precision and high-value screens, this feature can provide more reliable protection and reduce the economic losses caused by accidental damage. At the same time, it is also conducive to protecting the personal safety of operators and avoiding accidental injuries that may be caused by the sudden detachment of the screen.

[0057] In terms of stability, the gradual pressure release can ensure that the screen remains stable during the release process. Since the reduction of negative pressure is a gradual process, the screen will not shake or tremble due to sudden changes in pressure, which is crucial for some inspection and sorting processes with high precision requirements;

[0058] In terms of applicability, the gradual pressure relief design of the present application can adapt to different types of screens and different working scenarios. Whether it is a thinner and lighter screen or a thicker and heavier screen, a gradual and stable pressure relief effect can be achieved by gradually adjusting the conduction of the through hole 1701. In addition, for some special materials or fragile screens, the gradual pressure relief function can provide a gentler release method to avoid damage to the screen surface due to instantaneous pressure relief, thereby expanding the scope of application of the equipment, enhancing the versatility and flexibility of the equipment, and meeting the application scenarios of enterprises under diversified production needs, which helps to improve the competitiveness and adaptability of enterprises in the market;

[0059] In summary, the present application achieves a gradual pressure relief function by setting a plurality of circumferentially distributed conducting holes 1701 on the pipeline 17 and gradually increasing in diameter, and utilizes the rotation of the kit 23. Compared with the instantaneous pressure relief method, the present application shows significant advantages in terms of safety, stability and applicability, and effectively reduces the risk of sudden pressure changes caused by instantaneous pressure relief, providing a more reliable, efficient and stable solution for screen detection and sorting.

[0060] Please refer again Fig.10 and Fig.11 A first plate 14 is fixed to the side of the movable seat 13, a second plate 15 is fixed to the lower part of the first plate 14, and the first plate 14 and the second plate 15 are both hollow; the transmission mechanism includes a transmission shaft 22 rotatably mounted in the second plate 15 and connected to the kit 23 through a transmission belt 24, and a second slider 21 slidably connected to the transmission shaft 22 is also slidably provided in the second plate 15, and the second slider 21 is connected to the stabilizing mechanism;

[0061] Among them, a boss 2101 is fixed on the second slider 21, and the outer wall of the transmission shaft 22 is provided with a groove adapted to the boss 2101, the boss 2101 extends into the groove and is slidably connected with the transmission shaft 22, and the groove includes a first groove body 2201 and a second groove body 2202 connected to each other, the first groove body 2201 is arranged along the axial direction of the transmission shaft 22, and the second groove body 2202 is arranged in a spiral shape.

[0062] The stabilizing mechanism includes a first slider 19 slidably disposed in the first plate 14 and an elastic telescopic member connecting the second slider 21 and the first slider 19 . The first slider 19 can be driven by a threaded driving member disposed in the first plate 14 to slide closer to or away from the movable seat 13 .

[0063] Specifically, the threaded drive member adopts a threaded matching driving method to adjust the position of the movable seat 13 in the first plate 14. It includes a drive rod rotatably installed in the first plate 14, and the drive rod passes through the first slider 19 and is threadedly connected to the first slider 19. In addition, a drive motor is also provided at one end of the first plate 14 away from the movable seat 13.

[0064] The elastic telescopic member includes a guide cylinder 26 fixedly connected to the second slider 21 and a telescopic rod 27 slidably fitted with the guide cylinder 26. A second connecting rod 20 is provided between the guide cylinder 26 and the first slider 19. Both ends of the second connecting rod 20 are hinged to the first slider 19 and the guide cylinder 26 respectively.

[0065] The guide cylinder 26 is further provided with a cylindrical spring 25 , and the two ends of the cylindrical spring 25 are respectively connected to the inner wall of the guide cylinder 26 and the head end of the telescopic rod 27 , and a pressing head is fixed to the tail end of the telescopic rod 27 .

[0066] When the screen needs to be released onto the second conveyor line 2, the threaded drive member drives the first slider 19 to slide in the first plate 14 toward the movable seat 13, so that the first slider 19 pushes the guide cylinder 26 downward through the second connecting rod 20 (at the same time, the second slider 21 moves downward along with the guide cylinder 26, and the boss 2101 moves along the axial direction of the transmission shaft 22), and then the pressing head contacts the screen. As the cylindrical spring 25 is compressed, the pressing head can exert a certain pressure on the screen (it should be noted that the elastic coefficient of the cylindrical spring 25 is small. This design feature makes the pressure change relatively slow and gentle when the pressing head applies pressure to the screen, avoiding The screen is not damaged due to excessive pressure or rapid changes, and the integrity of the screen is effectively guaranteed. It is especially suitable for some relatively fragile or high-precision screens, reducing the production risks and costs of the enterprise), thereby promoting the smooth separation of the suction cup 18 from the screen. Before the pressing head contacts the screen, the boss 2101 slides in the first groove 2201, and the transmission shaft 22 does not rotate. During the compression of the cylindrical spring 25, the boss 2101 slides in the second groove 2202, prompting the transmission shaft 22 to drive the kit 23 to rotate through the transmission belt 24, so that the multiple conductive holes 1701 can be connected one by one, so as to realize the gradual and stable release of the negative pressure state in the suction cup 18.

[0067] As another embodiment of the present invention, an application of the OLED screen AOI detection device in OLED production is also proposed, which adopts the OLED screen AOI detection device of the above embodiment.

[0068] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0069] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An OLED screen AOI inspection device, comprising a first conveyor line and a second conveyor line arranged side by side and a plurality of cameras arranged on the first conveyor line; It is characterized in that Also includes: A transverse shift seat is movably arranged above the first conveying line and the second conveying line, the transverse shift seat can move along a conveying direction perpendicular to the screen, and a plurality of suction cups are movably arranged below the transverse shift seat, and the plurality of suction cups can be driven by an opening and closing driving mechanism to perform an expansion or closing action; The stabilizing mechanism can press the screen when the screen detected as unqualified by the camera reaches the second conveying line, and prompt the negative pressure suction mechanism to release the negative pressure state.

2. The OLED screen AOI inspection device according to claim 1, characterized in that: Two cylinders are installed on the transverse shift seat, a disc is fixed on the movable end of the cylinder, an assembly frame arranged in a "cross" shape is fixed below the disc through a plurality of connecting arms, and the opening and closing driving mechanism is installed on the disc.

3. The OLED screen AOI inspection device according to claim 2, characterized in that: The opening and closing driving mechanism comprises a plurality of movable seats slidably arranged on the assembly frame, the plurality of movable seats are equidistantly distributed along the circumference and are connected with a threaded driving assembly arranged between the disc and the assembly frame, and the negative pressure suction mechanism is arranged on the movable seats.

4. The OLED screen AOI inspection device according to claim 3, characterized in that: The threaded drive assembly includes a screw rod rotatably installed between the disc and the assembly frame, and a threaded sleeve sleeved on the screw rod and threadedly connected to the screw rod. The threaded sleeve is respectively connected to the multiple movable seats through multiple first connecting rods, and the two ends of the first connecting rod are respectively hinged to the threaded sleeve and the movable seat, and the screw rod can be driven to rotate by a driving motor installed on the disc.

5. The OLED screen AOI inspection device according to claim 1, characterized in that: The suction cup is connected to a negative pressure suction mechanism, which includes a negative pressure pump and a pipeline arranged on the negative pressure pump. The suction cup is installed at one end of the pipeline away from the negative pressure pump.

6. The OLED screen AOI inspection device according to claim 5, characterized in that: The pipeline is provided with a plurality of conducting holes, which are distributed along the circumferential direction and have gradually increasing diameters. A kit is rotatably installed on the pipeline, and the kit is provided with a through hole, the diameter of which is larger than the diameter of the conducting hole.

7. The OLED screen AOI inspection device according to claim 6, characterized in that: A first plate is fixed to the side of the movable seat, a second plate is fixed to the lower part of the first plate, and the first plate and the second plate are both hollow; The kit is connected to the stabilizing mechanism via a transmission mechanism, the transmission mechanism comprising a transmission shaft rotatably mounted in the second plate and connected to the kit via a transmission belt, and a second slider slidably provided in the second plate and slidably connected to the transmission shaft, the second slider being connected to the stabilizing mechanism; Among them, a convex column is fixed on the second sliding block, and the outer wall of the transmission shaft is provided with a groove adapted to the convex column, the convex column extends into the groove and is slidably connected with the transmission shaft, and the groove includes a first groove body and a second groove body connected to each other, the first groove body is arranged along the axial direction of the transmission shaft, and the second groove body is arranged in a spiral shape.

8. The OLED screen AOI inspection device according to claim 7, characterized in that: The stabilizing mechanism includes a first slider slidably disposed in the first plate member and an elastic telescopic member connecting the second slider and the first slider. The first slider can be driven by a threaded driving member disposed in the first plate member to slide closer to or away from the movable seat.

9. The OLED screen AOI inspection device according to claim 8, characterized in that: The elastic telescopic member comprises a guide cylinder fixedly connected to the second slider and a telescopic rod slidably sleeved with the guide cylinder, a second connecting rod is arranged between the guide cylinder and the first slider, and two ends of the second connecting rod are respectively hinged to the first slider and the guide cylinder; A cylindrical spring is also provided in the guide cylinder, and two ends of the cylindrical spring are respectively connected to the inner wall of the guide cylinder and the head end of the telescopic rod, and a pressing head is fixed to the tail end of the telescopic rod.

10. Application of OLED screen AOI detection equipment in OLED production, characterized in that: Use the OLED screen AOI inspection equipment as described in any one of claims 1-9.

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