OLED flexible screen appearance defect visual detection device and method

Abstract

The invention relates to the technical field of flexible screen detection, in particular to an OLED flexible screen appearance defect visual detection device and method.The OLED flexible screen appearance defect visual detection device comprises two driving assemblies which are symmetrically arranged, and the two ends of each driving assembly are each provided with two adsorption devices which are oppositely arranged; the elastic traction structure is arranged on the driving assembly and connected with the ends of the adsorption devices, and the elastic traction structure can drive the two adsorption devices to move close to each other; the supporting assembly is arranged on the driving assembly, the supporting assembly comprises a pushing structure and a side plate, a guide groove is formed in the side plate, the pushing structure can move in the guide groove, an abutting part is arranged on the pushing structure, the abutting part is matched with the elastic traction structure, the two sets of adsorption devices can be staggered, and the two sets of adsorption devices are arranged on the supporting assembly. Detection integrity is improved, and edge position detection precision reduction is avoided.

Description

Technical Field

[0001] The present invention relates to the field of flexible screen detection technology, and in particular to a device and method for visually detecting appearance defects of OLED flexible screens. Background Art

[0002] OLED flexible screens, with their unique bendability and foldability, have found widespread application in smartphones, wearable devices, and automotive displays. During the production of OLED flexible screens, process quality inspection is crucial, focusing on key indicators such as the displacement deviation between display layers and the thickness of the colloid between the layered structures. This is typically accomplished using optical inspection equipment.

[0003] Although only one side of the OLED flexible screen is used for display, in order to ensure the accuracy of the process and product quality, a comprehensive inspection of both sides of the screen is required during testing. Currently, common testing equipment uses a clamping mechanism to fix the OLED flexible screen and inspect both sides in turn. However, in actual operation, the clamping mechanism will block some areas when fixing the screen, resulting in the optical inspection equipment being unable to effectively inspect these areas. Once there are defects in these blocked areas, they cannot be detected, which directly affects the quality control of the product. Summary of the Invention

[0004] The purpose of the present invention is to provide a device and method for visually detecting appearance defects of OLED flexible screens to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: OLED flexible screen appearance defect visual inspection device, including: Two sets of symmetrically arranged drive components, each end of the drive component is provided with two sets of oppositely arranged adsorption devices; An elastic traction structure is provided on the driving assembly and connected to the ends of the adsorption devices, and the elastic traction structure can drive the two groups of adsorption devices to move toward each other; A support assembly is arranged on the driving assembly, and the support assembly includes a pushing structure and a side plate. A guide groove is formed on the side plate, and the pushing structure can move in the guide groove. An abutment portion is provided on the pushing structure, and the abutment portion cooperates with the elastic traction structure to enable the two groups of adsorption devices to be misaligned.

[0006] As a further solution of the present invention: the driving assembly includes a connecting plate and a connecting arm rotatably mounted on the connecting plate, a second gear is coaxially fixedly mounted on the rotating shaft of the connecting arm, the second gear is engaged with a first gear rotatably mounted on the connecting plate, and the first gear is connected to the output shaft of the driving device fixedly mounted on the connecting plate.

[0007] As a further solution of the present invention: the number of teeth of the first gear is smaller than the number of teeth of the second gear.

[0008] As a further embodiment of the present invention, the elastic traction structure includes two sets of first inclined grooves symmetrically arranged at one end of the connecting arm and a second sheave rotatably connected to the end of the adsorption device, the second sheave being capable of rolling in the first inclined grooves, and an abutment wheel being provided at an end of the second sheave away from the adsorption device, the abutment wheel being adapted to the abutment portion; The elastic traction structure further includes a guide sleeve, which can keep the orientation of the adsorption device constant.

[0009] As a further solution of the present invention: the guide kit includes a retaining groove arranged on the connecting arm and a follower slidably connected to the adsorption device, the follower can slide in the retaining groove, and the follower and the connecting arm are connected by a cylindrical spring.

[0010] As a further embodiment of the present invention, the support assembly includes a first electric telescopic rod fixedly mounted on the connecting arm, a vertical guide member connected to a telescopic end of the first electric telescopic rod, a steel connecting rod slidably mounted on the vertical guide member, a first sheave rotatably mounted on an end of the steel connecting rod away from the vertical guide member, and the first sheave is capable of rolling in the guide groove; One end of the first sheave away from the steel connecting rod is connected to the abutment portion.

[0011] As a further solution of the present invention: the guide groove includes two groups of second inclined grooves symmetrically arranged on the side plate, and one ends of the two groups of second inclined grooves are connected by a vertical groove; The projection of the axis of the second inclined groove along the length direction onto the connecting arm is collinear with the projection of the axis of the first inclined groove along the length direction onto the connecting arm.

[0012] As a further solution of the present invention: it also includes: A quadrilateral structure is provided on the connecting plate, a second electric telescopic rod is rotatably mounted on the quadrilateral structure, and the second electric telescopic rod is rotatably connected to the connecting plate; A linear drive module and a guide shaft are provided on the quadrilateral structure, and a sliding sleeve is slidably mounted on the guide shaft; The connecting frame is rotatably connected to the linear drive module and the sliding sleeve, and a plurality of optical modules are equidistantly mounted on the connecting frame.

[0013] As a further solution of the present invention: the quadrilateral structure includes a first deflection arm and a second deflection arm which are parallely and rotatably mounted on the connecting plate, the ends of the first deflection arm and the second deflection arm are connected by a connecting rod, the linear drive module is fixedly connected to the first deflection arm, and the guide shaft is fixedly connected to the second deflection arm.

[0014] The method for using the device for visually inspecting appearance defects of an OLED flexible screen comprises the following steps: Step 1: Place the OLED flexible screen to be tested on the two sets of adsorption devices located at the bottom. The adsorption devices fix the OLED flexible screen by generating negative pressure. Step 2: The linear drive module moves, driving the optical module to move and inspect one side of the OLED flexible screen; Step 3: The support assembly moves so that the upper adsorption device moves toward the OLED flexible screen, and the upper adsorption device is used to adsorb the OLED flexible screen, and then the lower adsorption device releases pressure; Step 4: The support assembly moves in the opposite direction, driving the lower adsorption device to move away from the OLED flexible screen; Step 5: The driving component moves to cause the OLED flexible screen to deflect; Step 6: The linear drive module moves in the opposite direction to detect the other side of the OLED flexible screen.

[0015] Compared with the prior art, the present invention has the following beneficial effects: By providing a driving assembly, an elastic traction structure, and a supporting assembly, firstly, in the initial state, the upper and lower adsorption devices can be kept in a staggered state. During the inspection, the upper adsorption device can avoid blocking the inspection operation, thereby improving the integrity of the inspection. At the same time, the upper and lower adsorption devices can complete the alternating adsorption of the OLED flexible screen, ensuring the position stability of the OLED flexible screen during the entire inspection process and improving the inspection accuracy. At the same time, the driving assembly can flip the OLED flexible screen, reducing the amount of manual operation and improving production efficiency. By setting up a quadrilateral structure, the optical module will not be affected by reflected light when it moves, and can maintain a constant distance from the OLED flexible screen, thus ensuring the consistency of detection conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of an embodiment of a visual inspection device for appearance defects of OLED flexible screens.

[0017] Figure 2This is a schematic diagram of the structure of an embodiment of a visual inspection device for appearance defects of an OLED flexible screen after the outer shell is removed.

[0018] Figure 3 This is a schematic diagram of the structure from another angle after the outer shell is removed in one embodiment of the visual inspection device for appearance defects of OLED flexible screens.

[0019] Figure 4 This is a structural schematic diagram of the driving component, elastic traction structure and support component in one embodiment of the visual detection device for appearance defects of OLED flexible screens.

[0020] Figure 5 for Figure 4 A magnified view of the structure at point A in the middle.

[0021] Figure 6 This is an exploded view of the structure of the support component in one embodiment of the visual inspection device for appearance defects of OLED flexible screens.

[0022] Figure 7 This is an exploded view of the local structure of the elastic traction structure in one embodiment of the visual inspection device for appearance defects of OLED flexible screens.

[0023] Figure 8 This is a schematic diagram of the quadrilateral structure and connecting frame structure in one embodiment of a visual inspection device for appearance defects of an OLED flexible screen.

[0024] Figure 9 This is a structural schematic diagram of a quadrilateral structure in one embodiment of a visual inspection device for appearance defects of an OLED flexible screen.

[0025] Figure 10 This is a structural schematic diagram of the linear drive module, guide shaft, sliding sleeve and connecting frame in one embodiment of the visual inspection device for appearance defects of OLED flexible screens.

[0026] In the figure: 1. outer shell; 2. connecting plate; 3. driving device; 4. first gear; 5. second gear; 6. connecting arm; 601. first inclined groove; 602. retaining groove; 7. first electric telescopic rod; 8. vertical guide; 9. steel connecting rod; 10. first groove pulley; 1001. abutment part; 11. side plate; 1101. second inclined groove; 1102. vertical groove; 12. adsorption device; 13. second groove pulley; 1301. abutment wheel; 14. follower; 15. columnar spring; 16. second electric telescopic rod; 17. first deflection arm; 18. second deflection arm; 19. connecting rod; 20. linear drive module; 21. guide shaft; 22. sliding sleeve; 23. connecting frame; 24. optical module. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0028] 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 an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0029] See also Figures 1 to 10 In an embodiment of the present invention, an OLED flexible screen appearance defect visual inspection device includes: an outer shell 1, two sets of driving components, an elastic traction structure and a supporting component.

[0030] The two sets of driving components are symmetrically arranged, and two sets of adsorption devices 12 arranged opposite to each other are respectively arranged at both ends of the driving components; The driving assembly includes a connecting plate 2 and a connecting arm 6 rotatably mounted on the connecting plate 2. The connecting plate 2 is mounted in the outer shell 1. A second gear 5 is coaxially fixedly mounted on the rotating shaft of the connecting arm 6. The second gear 5 is engaged with a first gear 4 rotatably mounted on the connecting plate 2. The first gear 4 is connected to the output shaft of the driving device 3 fixedly mounted on the connecting plate 2. Specifically, the number of teeth of the first gear 4 is less than the number of teeth of the second gear 5.

[0031] In this embodiment, when the driving device 3 is working, its output shaft can drive the connecting arm 6 connected to it to rotate. In the initial state, one side of the OLED flexible screen is facing upward, so that one side of the OLED flexible screen can be inspected in this state. When the inspection of this side is completed, the connecting arm 6 can rotate and drive the OLED flexible screen to flip over, so that the other side is switched to an upward state, so that the other side can be inspected, that is, double-sided inspection of the OLED flexible screen can be achieved, thereby improving the comprehensiveness of the inspection. Compared with the traditional method of manually turning over the OLED flexible screen, the present device automatically turns over after completing the inspection of one side of the OLED flexible screen, thereby reducing the amount of manual operation and improving production efficiency.

[0032] Furthermore, by making the number of teeth of the first gear 4 smaller than the number of teeth of the second gear 5 , the load of the driving device 3 when driving the connecting arm 6 to rotate can be effectively reduced, thereby improving the durability of the driving device 3 .

[0033] See also Figure 5 、 Figure 7 The elastic traction structure is provided on the driving assembly and connected to the end of the adsorption device 12, and the elastic traction structure can drive the two groups of adsorption devices 12 to move closer to each other; The elastic traction structure includes two groups of first inclined grooves 601 symmetrically arranged at one end of the connecting arm 6 and a second sheave 13 rotatably connected to the end of the adsorption device 12. The second sheave 13 is capable of rolling in the first inclined grooves 601. An abutment wheel 1301 is provided at the end of the second sheave 13 away from the adsorption device 12. The abutment wheel 1301 is adapted to the abutment portion 1001. The elastic traction structure further includes a guide sleeve, which can keep the orientation of the adsorption device 12 constant.

[0034] Under the pulling of the guide kit, the second sheave 13 has a state of maintaining movement at the end of the first inclined groove 601. Specifically, the second sheave 13 can be at one end of the first inclined groove 601 close to the rotating shaft of the connecting arm 6, wherein the distance between the two symmetrically arranged groups of first inclined grooves 601 gradually decreases along the length of the connecting arm 6 toward the rotating shaft, so that when the second sheave 13 is at the end of the first inclined groove 601, the distance between the second sheave 13 and the center line of the connecting arm 6 along its length direction is the smallest, and this is only the position of the second sheave 13 and the adsorption device 12 at the lower part in the initial state. Due to the existence of the support assembly, the abutment wheel 13 on the upper second sheave 13 01 is in a locked state, so that this set of second groove wheels 13 is at the other end of the first inclined groove 601, and there is a certain gap between the upper and lower sets of adsorption devices 12, and the two can be in a staggered state along the length square of the connecting arm 6. This state can ensure that during the detection process, when the OLED flexible screen is adsorbed and fixed by the lower adsorption device 12, the upper side of the OLED flexible screen can be in a completely exposed state, so that during the detection, a comprehensive detection of the upper side of the OLED flexible screen can be achieved, avoiding the obstruction of the clamping and fixing device, resulting in the blocked area being unable to be detected, thereby improving the comprehensiveness and accuracy of the detection to a certain extent.

[0035] The guide kit includes a retaining groove 602 provided on the connecting arm 6 and a follower 14 slidably connected to the adsorption device 12 . The follower 14 can slide in the retaining groove 602 , and the follower 14 is connected to the connecting arm 6 via a cylindrical spring 15 .

[0036] Since the follower 14 can slide in the retaining groove 602 and the follower 14 is slidably connected to the adsorption device 12, under the guidance of the follower 14, when the adsorption device 12 is in motion, it can always maintain a directional orientation relative to the connecting arm 6, so that the orientation stability when the adsorption device 12 adsorbs the OLED flexible screen is improved, the stability of the OLED flexible screen during detection is improved, and inaccurate detection results caused by shaking of the OLED flexible screen are prevented.

[0037] By setting it on the cylindrical spring 15, it is in a stretched state in the initial state, so that the cylindrical spring 15 has a tendency to pull the follower 14 toward the rotating shaft of the connecting arm 6, and then the second groove wheel 13 on the adsorption device 12 located at the lower part can abut against the end of the first inclined groove 601 toward the rotating shaft of the connecting arm 6, so that in this state, the adsorption device 12 can have higher stability, preventing the position of the adsorption device 12 from changing during the detection process, causing a slight sliding friction between it and the OLED flexible screen, and causing the OLED flexible screen to be in a non-tensioned state after the adsorption device 12 stops.

[0038] See also Figure 4 、 Figure 6 The support assembly is arranged on the driving assembly, and the support assembly includes a pushing structure and a side plate 11. A guide groove is formed on the side plate 11. The pushing structure can move in the guide groove, and an abutment portion 1001 is provided on the pushing structure. The abutment portion 1001 cooperates with the elastic traction structure to enable the two groups of adsorption devices 12 to be misaligned.

[0039] The support assembly includes a first electric telescopic rod 7 fixedly mounted on the connecting arm 6, a vertical guide 8 being connected to the telescopic end of the first electric telescopic rod 7, a steel connecting rod 9 being slidably mounted on the vertical guide 8, and a first sheave 10 being rotatably mounted on the end of the steel connecting rod 9 away from the vertical guide 8, and the first sheave 10 being able to roll in the guide groove; One end of the first sheave 10 away from the steel connecting rod 9 is connected to the abutment portion 1001; The guide groove includes two groups of second inclined grooves 1101 symmetrically arranged on the side plate 11, and one end of the two groups of second inclined grooves 1101 is connected by a vertical groove 1102; The projection of the axis of the second inclined groove 1101 along its length direction on the connecting arm 6 is collinear with the projection of the axis of the first inclined groove 601 along its length direction on the connecting arm 6 .

[0040] Specifically, in the application, there are four groups of adsorption devices 12, of which two groups of adsorption devices 12 are located at the bottom with their adsorption parts facing upward, and the other two groups of adsorption devices 12 are located at the top with their adsorption positions facing downward. In the initial state, due to the action of the abutment portion 1001 on the abutment wheel 1301 connected to the upper adsorption device 12, the second groove wheel 13 connected to the upper adsorption device 12 is in a position where the first inclined groove 601 is away from the rotating shaft of the connecting arm 6, and the second groove wheels 13 on the two groups of adsorption devices 12 at the bottom are in a position where the first inclined groove 601 is away from the rotating shaft of the connecting arm 6 under the pulling of the column spring 15. The inclined groove 601 abuts against one end of the rotating shaft of the connecting arm 6, that is, the distance between the two upper groups of adsorption devices 12 is greater than the distance between the two lower groups of adsorption devices 12, and the two groups of adsorption devices 12 corresponding to one end of the connecting arm 6 are in a staggered state. In this state, the OLED flexible screen to be tested is placed on the lower adsorption device 12, and the OLED flexible screen is kept flat. Then, the two lower groups of adsorption devices 12 are controlled to move, so as to use the negative pressure generated by them to fix the OLED flexible screen, thereby ensuring the stability of the OLED flexible screen during the testing process.

[0041] After completing the inspection of one side of the OLED flexible screen, the action end of the first electric telescopic rod 7 is retracted. At this time, the vertical guide 8 connected thereto will move synchronously and cause the abutment 1001 to move. At this time, the abutment wheel 1301 loses the support of the abutment 1001 and can move along the length direction of the first inclined groove 601 under the pulling of the cylindrical spring 15. During this process, the upper adsorption device 12 will move toward the lower adsorption device 12 until the second groove wheel 13 on the upper adsorption device 12 moves to the end of the first inclined groove 601. At this time, the upper adsorption device 12 and the lower adsorption device 12 are in a state of overlapping projection on the OLED flexible screen. At this time, the lower adsorption device 12 is depressurized, and the upper adsorption device 12 generates negative pressure, so that the OLED flexible screen is switched from being adsorbed by the lower adsorption device 12 to being adsorbed by the upper adsorption device 12.

[0042] When the two groups of adsorption devices 12 overlap, the first sheave 10 moves to the end of the second inclined groove 1101 at the upper part, and at this time, under the action of gravity, the steel connecting rod 9 can drive the first sheave 10 to move downward along the length direction of the vertical guide member 8. During this process, the first sheave 10 can move in the vertical groove 1102. When the first sheave 10 moves to the end of the vertical groove 1102, the first electric telescopic rod 7 will drive the steel connecting rod 9 to move away from the rotating shaft of the connecting arm 6, so that the first sheave 10 can move along the second inclined groove 1101 at the lower part. 101 moves, and after abutting with the abutment wheel 1301 connected to the lower adsorption device 12, the abutment wheel 1301 is driven to move along the corresponding first inclined groove 601, so that the adsorption device 12 located at the lower portion can move away from the OLED flexible screen and be misaligned with the upper adsorption device 12, thereby realizing the alternating adsorption of the OLED flexible screen by the upper and lower groups of adsorption devices 12, and then the driving component drives the connecting arm 6 to rotate, so that the lower side of the OLED flexible screen is switched to the upper side, so that double-sided detection can be achieved.

[0043] Based on the above arrangement, firstly, the upper and lower groups of adsorption devices 12 can be kept in a staggered state in the initial state, so that during detection, the adsorption device 12 located at the upper part will not block the detection operation, thereby improving the integrity of the detection; secondly, the upper and lower groups of adsorption devices 12 can complete the alternating adsorption of the OLED flexible screen, thereby ensuring the position stability of the OLED flexible screen during the entire detection process and improving the detection accuracy; at the same time, during the process of the first electric telescopic rod 7 performing a telescopic action, the upper and lower groups of adsorption devices 12 automatically complete the alternating adsorption action process, thereby improving the degree of automation of the device.

[0044] It should be noted that the adsorption position of the adsorption device 12 is provided with a suction cup that is conductive with its interior. When the lower adsorption device 12 uses the suction cup to adsorb and fix the OLED flexible screen, the suction cup is in a compressed and deformed state, so that when the upper adsorption device 12 overlaps with the lower adsorption device 12, the suction cup on the upper adsorption device 12 does not contact the OLED flexible screen, and there is a gap between the two, thereby avoiding the friction between the suction cup and the OLED flexible screen when the adsorption device 12 is in motion, causing the position of the OLED flexible screen to change. When the upper and lower sets of adsorption devices 12 overlap, the lower adsorption device 12 is depressurized. At this time, the suction cup connected to it is reset and can lift the OLED flexible screen upward by a certain displacement, so that the OLED flexible screen can fit with the suction cup on the upper adsorption device 12. When the upper adsorption device 12 generates negative pressure, the corresponding suction cup can also be squeezed and deformed, so that the OLED flexible screen can be separated from the suction cup on the lower adsorption device 12, so as to better perform the alternating adsorption and fixing operation.

[0045] See also Figure 2 、 Figure 3 、 Figures 8 to 10 The OLED flexible screen appearance defect visual detection device also includes: a quadrilateral structure and a connecting frame 23.

[0046] A quadrilateral structure is provided on the connecting plate 2, and a second electric telescopic rod 16 is rotatably mounted on the quadrilateral structure, and the second electric telescopic rod 16 is rotatably connected to the connecting plate 2; The quadrilateral structure is provided with a linear drive module 20 and a guide shaft 21 , and a sliding sleeve 22 is slidably mounted on the guide shaft 21 ; Among them, the quadrilateral structure includes a first deflection arm 17 and a second deflection arm 18 which are parallelly and rotatably mounted on the connecting plate 2. The ends of the first deflection arm 17 and the second deflection arm 18 are connected by a connecting rod 19. The linear drive module 20 is fixedly connected to the first deflection arm 17, and the guide shaft 21 is fixedly connected to the second deflection arm 18.

[0047] The connecting frame 23 is rotatably connected to the linear drive module 20 and the sliding sleeve 22 , and a plurality of optical modules 24 are equidistantly mounted on the connecting frame 23 .

[0048] In the initial state, the connecting arm 6 is in a slightly tilted state. At this time, the optical module 24 is oriented vertically, so that when the illuminating light emitted by the optical module 24 acts on the OLED flexible screen, it will not be reflected back vertically, that is, it will not affect the detection of the optical module 24, thereby improving the detection accuracy.

[0049] Furthermore, in this embodiment, the first deflection arm 17, the second deflection arm 18 and the two sets of connecting rods 19 form a parallelogram structure, so that the two sets of connecting rods 19 can always maintain a vertical state, and the connecting frame 23 is rotatably connected to the sliding sleeve 22 and the linear drive module 20, so that when the connecting frame 23 moves, the optical module 24 thereon can always maintain a vertical state, and the first deflection arm 17 and the second deflection arm 18 can remain parallel to the connecting arm 6, so that when the optical module 24 moves, it will not be affected by the reflected light, and can maintain a constant distance from the OLED flexible screen, thereby ensuring the consistency of the detection conditions and improving the detection structure.

[0050] It is worth noting that the inclination angle of the connecting arm 6 needs to be determined according to the OLED flexible screen to eliminate the influence of reflected light on the detection structure to the greatest extent. That is, for different types of OLED flexible screens, the inclination angle of the connecting arm 6 is inconsistent. At this time, the second electric telescopic rod 16 can adjust the inclination angle of the first deflection arm 17 and the second deflection arm 18 to ensure that when the optical module 24 moves, the distance between it and the OLED flexible screen is constant, and at the same time ensure the vertical state of the optical module 24.

[0051] It should also be noted that in the initial state, the optical module 24 is at the end of its stroke. In this state, the connecting frame 23 and the optical module 24 will not interfere with the rotation of the connecting arm 6. That is, in the initial state, the connecting frame 23 and the optical module 24 are outside the rotation radius of the connecting arm 6.

[0052] As an embodiment of the present invention, a method for using the above-mentioned OLED flexible screen appearance defect visual inspection device is also proposed, comprising the following steps: Step 1: Place the OLED flexible screen to be tested on the two sets of adsorption devices 12 located at the bottom. The adsorption devices 12 fix the OLED flexible screen by generating negative pressure. Step 2: The linear drive module 20 moves, driving the optical module 24 to move and detect one side of the OLED flexible screen; Step 3: The support assembly moves so that the upper adsorption device 12 moves toward the OLED flexible screen, and the upper adsorption device 12 is used to adsorb the OLED flexible screen, and then the lower adsorption device 12 is depressurized; Step 4: The support assembly moves in the reverse direction, driving the lower adsorption device 12 to move away from the OLED flexible screen; Step 5: The driving component moves to cause the OLED flexible screen to deflect; Step 6: The linear drive module 20 moves in the reverse direction to detect the other side of the OLED flexible screen.

[0053] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0054] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method 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 can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. OLED flexible screen appearance defect visual inspection device, characterized by: include: Two sets of symmetrically arranged drive components, each end of the drive component is provided with two sets of oppositely arranged adsorption devices; An elastic traction structure is provided on the driving assembly and connected to the ends of the adsorption devices, and the elastic traction structure can drive the two groups of adsorption devices to move toward each other; A support assembly is arranged on the driving assembly, and the support assembly includes a pushing structure and a side plate. A guide groove is formed on the side plate, and the pushing structure can move in the guide groove. An abutment portion is provided on the pushing structure, and the abutment portion cooperates with the elastic traction structure to enable the two groups of adsorption devices to be misaligned.

2. The OLED flexible screen appearance defect visual inspection device according to claim 1, characterized in that: The driving assembly includes a connecting plate and a connecting arm rotatably mounted on the connecting plate, a second gear is coaxially fixedly mounted on the rotating shaft of the connecting arm, the second gear is engaged with a first gear rotatably mounted on the connecting plate, and the first gear is connected to the output shaft of the driving device fixedly mounted on the connecting plate.

3. The OLED flexible screen appearance defect visual inspection device according to claim 2, characterized in that: The number of teeth of the first gear is smaller than the number of teeth of the second gear.

4. The OLED flexible screen appearance defect visual inspection device according to claim 2, characterized in that: The elastic traction structure includes two groups of first inclined grooves symmetrically arranged at one end of the connecting arm and a second groove wheel rotatably connected to the end of the adsorption device, the second groove wheel is capable of rolling in the first inclined groove, and an abutment wheel is provided at the end of the second groove wheel away from the adsorption device, and the abutment wheel is adapted to the abutment portion; The elastic traction structure further includes a guide sleeve, which can keep the orientation of the adsorption device constant.

5. The OLED flexible screen appearance defect visual inspection device according to claim 4, characterized in that: The guide kit includes a retaining groove provided on the connecting arm and a follower slidably connected to the adsorption device. The follower can slide in the retaining groove, and the follower is connected to the connecting arm via a columnar spring.

6. The OLED flexible screen appearance defect visual inspection device according to claim 2, characterized in that: The support assembly includes a first electric telescopic rod fixedly mounted on the connecting arm, a vertical guide member connected to the telescopic end of the first electric telescopic rod, a steel connecting rod slidably mounted on the vertical guide member, and a first grooved wheel rotatably mounted on the end of the steel connecting rod away from the vertical guide member, and the first grooved wheel is capable of rolling in the guide groove; One end of the first sheave away from the steel connecting rod is connected to the abutment portion.

7. The OLED flexible screen appearance defect visual inspection device according to claim 4, characterized in that: The guide groove comprises two groups of second inclined grooves symmetrically arranged on the side plate, and one ends of the two groups of second inclined grooves are connected by a vertical groove; The projection of the axis of the second inclined groove along the length direction onto the connecting arm is collinear with the projection of the axis of the first inclined groove along the length direction onto the connecting arm.

8. The OLED flexible screen appearance defect visual inspection device according to claim 2, characterized in that: Also includes: A quadrilateral structure is provided on the connecting plate, a second electric telescopic rod is rotatably mounted on the quadrilateral structure, and the second electric telescopic rod is rotatably connected to the connecting plate; A linear drive module and a guide shaft are provided on the quadrilateral structure, and a sliding sleeve is slidably mounted on the guide shaft; The connecting frame is rotatably connected to the linear drive module and the sliding sleeve, and a plurality of optical modules are equidistantly mounted on the connecting frame.

9. The OLED flexible screen appearance defect visual inspection device according to claim 8, characterized in that: The quadrilateral structure includes a first deflection arm and a second deflection arm which are parallelly and rotatably mounted on the connecting plate. The ends of the first deflection arm and the second deflection arm are connected by a connecting rod. The linear drive module is fixedly connected to the first deflection arm, and the guide shaft is fixedly connected to the second deflection arm.

10. The method for using the device for visually inspecting appearance defects of an OLED flexible screen according to any one of claims 1 to 9, wherein: The following steps are involved: Step 1: Place the OLED flexible screen to be tested on the two sets of adsorption devices located at the bottom. The adsorption devices fix the OLED flexible screen by generating negative pressure. Step 2: The linear drive module moves, driving the optical module to move and inspect one side of the OLED flexible screen; Step 3: The support assembly moves so that the upper adsorption device moves toward the OLED flexible screen, and the upper adsorption device is used to adsorb the OLED flexible screen, and then the lower adsorption device releases pressure; Step 4: The support assembly moves in the opposite direction, driving the lower adsorption device to move away from the OLED flexible screen; Step 5: The driving component moves to cause the OLED flexible screen to deflect; Step 6: The linear drive module moves in the opposite direction to detect the other side of the OLED flexible screen.

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