Appearance detection device for OLED (Organic Light Emitting Diode) water vapor barrier coating

Abstract

The utility model discloses an appearance detection device for an OLED (Organic Light Emitting Diode) water vapor barrier coating, which belongs to the technical field of OLED detection and is characterized by comprising a soaking pool, an elastic buffer clamping mechanism is movably connected to the outer side of the soaking pool, and a dynamic turnover detection mechanism is movably connected to the inner side of the soaking pool. Buffering clamping can be achieved through the spring sets on the inner sides of the stepped telescopic clamping blocks and the elastic clamping soft cushions on the outer sides of the stepped telescopic clamping blocks, the OLED board is prevented from being damaged due to too large stress, and the soft cushions make contact with workpieces firstly and can disperse pressure to protect the edges. The nested telescopic stepped structure not only can strengthen protection on the surface of the workpiece during descending and clamping, but also enables clamping to be more stable due to increase of the contact area, effectively avoids displacement or shaking of the workpiece in subsequent complex operations such as soaking, rotary scouring and overturning, provides powerful guarantee for stable treatment of the OLED panel in a flaw detection process, and improves the detection efficiency of the OLED panel. The detection accuracy and reliability can be improved, and coloring agent soaking detection is carried out through dynamic overturning.

Description

Technical Field

[0001] This utility model relates to the field of OLED testing technology, and in particular to an appearance testing device for OLED water vapor barrier coating. Background Technology

[0002] While OLED technology boasts numerous advantages, it is extremely sensitive to moisture. The quality of the moisture barrier coating directly impacts the performance and lifespan of OLED devices. Current traditional inspection methods, such as optical microscopes and electron microscopes, have limitations in detecting minute and hidden defects, making it difficult to meet the increasingly stringent high-precision inspection requirements. Against this backdrop, the flaw detection method of spraying or immersing colorant has been applied. Based on the capillary action principle, this method sprays or immerses the OLED moisture barrier coating with colorant, allowing the colorant to penetrate into the defects. After rinsing off the excess and applying a developer, the colorant residue at the defects is clearly visible, thus accurately detecting coating appearance defects. This method is simple to operate, low in cost, and highly sensitive, effectively compensating for the shortcomings of traditional inspection methods.

[0003] In existing technologies, spraying colorants can lead to uneven adhesion area and incomplete coloring range, while immersion can result in static adhesion of colorants, which requires a long adhesion time and is prone to over-coloring. In addition, the above methods require a long coloring time to ensure the coloring effect, which slows down the processing efficiency. Furthermore, when clamping the OLED workpiece to be tested, it is easy to damage the clamping point and cause new trauma.

[0004] To address this, an appearance inspection device for OLED water vapor barrier coating is proposed. Utility Model Content

[0005] The purpose of this invention is to provide an appearance inspection device for OLED water vapor barrier coating, which can solve the limitations of existing spraying and immersion methods, as well as the problem that clamping the workpiece can easily damage the workpiece surface.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an appearance inspection device for OLED water vapor barrier coating, comprising an immersion tank, wherein an elastic buffer clamping mechanism is movably connected to the outer side of the immersion tank, and a dynamic flipping detection mechanism is movably connected to the inner side of the immersion tank.

[0007] The elastic buffer clamping mechanism includes a support column, a servo motor, a bearing plate, a stepped telescopic clamping block, a spring assembly, and a transmission component. The support column is slidably connected to both sides of the soaking tank. The servo motor is fixedly connected to the outside of the support column. The bearing plate is fixedly connected to the output end of the servo motor. The transmission component is movably connected to the outside of the bearing plate. The stepped telescopic clamping block is slidably connected to the front side of the bearing plate. The spring assembly is movably connected to the inside of the stepped telescopic clamping block. The transmission component is movably connected to the outside of the bearing plate and the stepped telescopic clamping block.

[0008] Preferably, the dynamic flipping detection mechanism includes a sealed gear box, a gear set, a supporting frustum, an electric spiral guide rod, a connecting beam, and an electric threaded rod.

[0009] Preferably, the sealing gear box is fixedly connected to the bottom of the soaking tank, the gear set is movably connected to the bottom of the sealing gear box, the supporting frustum is fixedly connected to the top of the gear set, and the electric spiral guide rod is movably connected to the top of the supporting frustum.

[0010] Preferably, the linkage beam is fixedly connected to the outside of the support column, the linkage beam is located at the front of the soaking tank, the electric threaded rod is movably connected to the front of the soaking tank, and the electric threaded rod is threadedly connected to the inside of the linkage beam.

[0011] Preferably, the transmission assembly includes a connecting rod, a rotating rod, a linkage rod, and an electrically operated telescopic rod.

[0012] Preferably, the connecting rod is fixedly connected to the outside of the stepped telescopic clamping block, the left connecting rod is slidably connected to the left side of the left bearing plate, the right connecting rod is slidably connected to the right side of the right bearing plate, the left electric telescopic rod is fixedly connected to the left side of the left bearing plate, the right electric telescopic rod is fixedly connected to the right side of the right bearing plate, the linkage rod is fixedly connected to the outside of the electric telescopic rod, and the rotating rod is rotatably connected to the outside of the linkage rod and the connecting rod.

[0013] Preferably, the outer side of the stepped telescopic clamping block is movably connected to an elastic clamping pad.

[0014] Preferably, a drain outlet is movably connected to the outside of the soaking pool.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This application incorporates an elastic buffer clamping mechanism. The spring assembly on the inner side of the stepped telescopic clamping block and the elastic clamping pad on the outer side can buffer the clamping, preventing damage to the OLED panel due to excessive stress. The pad first contacts the workpiece, dispersing pressure and protecting the edges. The nested telescopic stepped structure not only enhances the protection of the workpiece surface during descent clamping but also increases the contact area, making the clamping more stable. This effectively prevents the workpiece from shifting or shaking during subsequent complex operations such as soaking, rotating rinsing, and flipping. It provides strong support for the stable processing of the OLED panel in the flaw detection process and helps improve the accuracy and reliability of the detection.

[0017] 2. This application utilizes a dynamic flipping detection mechanism that employs a servo motor to rotate the support plate, enabling efficient detection of both sides of the OLED panel. This avoids the limitations of single-sided detection and significantly improves the comprehensiveness of the inspection. During immersion, the bottom sealed gear box drives the support frustum and the electric spiral guide rod. The rotation and revolution of the spiral guide rod cause the colorant to flow across the OLED panel in all directions, enhancing the flaw detection effect and accurately identifying minute defects. This combination of dynamic flipping and unique guide design effectively improves detection sensitivity and accuracy. It not only ensures detection quality but also improves detection efficiency while maintaining detection accuracy, providing a solid guarantee for the quality and reliability of OLED products and reducing the risk of defective products leaving the product. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the appearance inspection device for OLED water vapor barrier coating according to the present invention.

[0019] Figure 2 This is a partial structural diagram of the soaking tank of this utility model;

[0020] Figure 3 This is an overall structural diagram of the elastic buffer clamping mechanism of this utility model;

[0021] Figure 4 This is an overall structural diagram of the transmission assembly of this utility model;

[0022] Figure 5 This is an overall structural diagram of the dynamic flipping detection mechanism of this utility model.

[0023] In the diagram, 1. Immersion tank; 2. Elastic buffer clamping mechanism; 21. Support column; 22. Servo motor; 23. Bearing plate; 24. Stepped telescopic clamping block; 25. Spring assembly; 26. Transmission assembly; 26a. Connecting rod; 26b. Rotating rod; 26c. Linkage rod; 26d. Electric telescopic rod; 3. Dynamic flipping detection mechanism; 31. Sealed gear box; 32. Gear assembly; 33. Supporting frustum; 34. Electric spiral guide rod; 35. Linkage beam; 36. Electric threaded rod; 4. Elastic clamping pad; 5. Drain outlet. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5 The present invention provides the following technical solution:

[0026] An appearance inspection device for OLED water vapor barrier coating includes an immersion tank 1, an elastic buffer clamping mechanism 2 movably connected to the outside of the immersion tank 1, and a dynamic flipping detection mechanism 3 movably connected to the inside of the immersion tank 1.

[0027] The elastic buffer clamping mechanism 2 includes a support column 21, a servo motor 22, a bearing plate 23, a stepped telescopic clamping block 24, a spring assembly 25, and a transmission assembly 26. The support column 21 is slidably connected to both sides of the soaking pool 1. The servo motor 22 is fixedly connected to the outside of the support column 21. The bearing plate 23 is fixedly connected to the output end of the servo motor 22. The transmission assembly 26 is movably connected to the outside of the bearing plate 23. The stepped telescopic clamping block 24 is slidably connected to the front side of the bearing plate 23. The spring assembly 25 is movably connected to the inside of the stepped telescopic clamping block 24. The transmission assembly 26 is movably connected to the outside of the bearing plate 23 and the stepped telescopic clamping block 24.

[0028] In this embodiment: the servo motor 22 and the support plate 23 can be supported by the support column 21, so that the servo motor 22 can drive the rotation of the support plate 23. The transmission component 26 can drive the stepped telescopic clamping block 24 to clamp the workpiece, and the inner spring group 25 provides buffering during clamping.

[0029] Specifically, such as Figure 1 , Figure 2 , Figure 5 As shown, the dynamic flipping detection mechanism 3 includes a sealed gear box 31, a gear set 32, a supporting frustum 33, an electric spiral guide rod 34, a connecting beam 35, and an electric threaded rod 36.

[0030] Specifically, such as Figure 1 , Figure 2 , Figure 5 As shown, the sealed gear box 31 is fixedly connected to the bottom of the soaking tank 1, the gear set 32 ​​is movably connected to the bottom of the sealed gear box 31, the supporting frustum 33 is fixedly connected to the top of the gear set 32, and the electric spiral guide rod 34 is movably connected to the top of the supporting frustum 33.

[0031] Specifically, such as Figure 1 , Figure 2 , Figure 5 As shown, the linkage beam 35 is fixedly connected to the outside of the support column 21. The linkage beam 35 is located on the front side of the soaking tank 1. The electric threaded rod 36 is movably connected to the front side of the soaking tank 1 and threadedly connected to the inside of the linkage beam 35.

[0032] In this embodiment: by using an electric threaded rod 36 to lower the height of the support column 21, the OLED panel is allowed to enter the immersion pool 1 filled with colorant. After the OLED panel is immersed, the bottom sealed gear box 31 drives the outer gear set 32 ​​to rotate, which in turn causes the support frustum 33 at the bottom of the gear set 32 ​​to rotate. The electric spiral guide rod 34 at the top of the support frustum 33 rotates in a small circle along it. The electric spiral guide rod 34 is self-rotating and guided by a waterproof motor connected to the support frustum 33 at the bottom. Its spiral surface guides the flow upward to flush the OLED panel. After a short immersion, the electric threaded rod 36 lifts the OLED panel out of the immersion pool 1. Then, the servo motor 22 drives the carrier plate 23 to rotate, and the reverse side of the OLED panel is immersed for the next round. After multiple flipping and coloring, the OLED panel is immediately cleaned and transferred to achieve surface appearance inspection.

[0033] Specifically, such as Figure 3 , Figure 4 As shown, the transmission assembly 26 includes a connecting rod 26a, a rotating rod 26b, a connecting rod 26c, and an electric telescopic rod 26d.

[0034] Specifically, such as Figure 3 , Figure 4 As shown, connecting rod 26a is fixedly connected to the outside of the stepped telescopic clamp 24, left connecting rod 26a is slidably connected to the left side of the left bearing plate 23, right connecting rod 26a is slidably connected to the right side of the right bearing plate 23, left electric telescopic rod 26d is fixedly connected to the left side of the left bearing plate 23, right electric telescopic rod 26d is fixedly connected to the right side of the right bearing plate 23, linkage rod 26c is fixedly connected to the outside of the electric telescopic rod 26d, and rotating rod 26b is rotatably connected to the outside of linkage rod 26c and connecting rod 26a.

[0035] In this embodiment: by activating the electric telescopic rod 26d, its extension pushes the connecting rod 26c to move outward, causing the distance between the connecting rod 26c and the connecting rod 26a to increase. During this process, the rotating rod 26b between the connecting rod 26c and the connecting rod 26a is pulled, causing the connecting rod 26a to move inward, thereby driving the stepped telescopic clamping block 24 to perform a clamping operation on the OLED panel.

[0036] Specifically, such as Figure 1 , Figure 2 As shown, the outer side of the stepped telescopic clamping block 24 is movably connected to an elastic clamping pad 4.

[0037] Specifically, such as Figure 1 , Figure 2 As shown, a drain outlet 5 is movably connected to the outside of the soaking pool 1.

[0038] In this embodiment: the elastic clamping pad 4 can further protect the clamping point, and the drain outlet 5 can discharge the waste liquid after the test is completed.

[0039] Working principle: After the OLED water vapor barrier coating is completed, multiple workpieces to be inspected are selected from the same coating process for flaw detection in the appearance inspection stage. First, the OLED panel is taken out, and its two sides are aligned with the center positions of the upper and lower stepped telescopic clamping blocks 24 of the support plate 23. Then, the electric telescopic rod 26d is activated. When the electric telescopic rod 26d extends, it pushes the connecting rod 26c to move outward, increasing the distance between the connecting rod 26c and the connecting rod 26a. During this process, the rotating rod 26b between the connecting rod 26c and the connecting rod 26a... Pulled, the connecting rod 26a moves inward, thereby causing the stepped telescopic clamping block 24 to clamp the OLED panel. Because the stepped telescopic clamping block 24 has a nested telescopic stepped structure, and its inner side is supported by the spring assembly 25, it can provide buffer clamping upon contact with the OLED panel, preventing damage due to excessive stress. Furthermore, its stepped structure further enhances the protection of the workpiece surface during the downward clamping process. Simultaneously, the elastic clamping pad 4 on the outer side of the stepped telescopic clamping block 24 will contact the workpiece first, and after clamping... After completion, the height of the support column 21 is lowered by the electric threaded rod 36 so that the OLED panel can be lowered into the immersion tank 1, which is filled with colorant. When the OLED panel is immersed in the colorant, the drive structure inside the bottom sealed gear box 31 drives the outer gear set 32 ​​to rotate, thereby driving the support frustum 33 at the bottom of the gear set 32 ​​to rotate. The electric spiral guide rod 34 on the top of the support frustum 33 rotates in a small circle along the support frustum 33. The electric spiral guide rod 34 can achieve self-rotation and flow guidance through the waterproof motor connected to the support frustum 33 at its bottom. The spiral surface of the electric spiral guide rod 34 is in an upward guiding state. When rotating, it can drive the colorant to flush the OLED panel upward. After a short immersion, the electric threaded rod 36 lifts the OLED panel so that it floats out of the colorant immersion tank 1. Then, the servo motor 22 drives the carrier plate 23 to rotate, and the reverse side of the OLED panel is briefly immersed again. The above operation is repeated. After multiple flipping and coloring, the OLED panel is immediately cleaned and transferred to achieve flaw detection in its surface appearance inspection.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An appearance inspection device for OLED water vapor barrier coating, comprising an immersion tank (1), characterized in that: An elastic buffer clamping mechanism (2) is movably connected to the outside of the soaking pool (1), and a dynamic flipping detection mechanism (3) is movably connected to the inside of the soaking pool (1). The elastic buffer clamping mechanism (2) includes a support column (21), a servo motor (22), a bearing plate (23), a stepped telescopic clamp (24), a spring assembly (25), and a transmission assembly (26). The support column (21) is slidably connected to both sides of the soaking pool (1). The servo motor (22) is fixedly connected to the outside of the support column (21). The bearing plate (23) is fixedly connected to the output end of the servo motor (22). The transmission assembly (26) is movably connected to the outside of the bearing plate (23). The stepped telescopic clamp (24) is slidably connected to the front side of the bearing plate (23). The spring assembly (25) is movably connected to the inside of the stepped telescopic clamp (24). The transmission assembly (26) is movably connected to the outside of the bearing plate (23) and the stepped telescopic clamp (24).

2. The appearance inspection device for OLED water vapor barrier coating according to claim 1, characterized in that: The dynamic flipping detection mechanism (3) includes a sealed gear box (31), a gear set (32), a supporting frustum (33), an electric spiral guide rod (34), a connecting beam (35), and an electric threaded rod (36).

3. The appearance inspection device for OLED water vapor barrier coating according to claim 2, characterized in that: The sealed gear box (31) is fixedly connected to the bottom of the soaking tank (1), the gear set (32) is movably connected to the bottom of the sealed gear box (31), the supporting frustum (33) is fixedly connected to the top of the gear set (32), and the electric spiral guide rod (34) is movably connected to the top of the supporting frustum (33).

4. The appearance inspection device for OLED water vapor barrier coating according to claim 2, characterized in that: The linkage beam (35) is fixedly connected to the outside of the support column (21). The linkage beam (35) is set on the front side of the soaking tank (1). The electric threaded rod (36) is movably connected to the front side of the soaking tank (1). The electric threaded rod (36) is threadedly connected to the inside of the linkage beam (35).

5. The appearance inspection device for OLED water vapor barrier coating according to claim 1, characterized in that: The transmission assembly (26) includes a connecting rod (26a), a rotating rod (26b), a linkage rod (26c), and an electric telescopic rod (26d).

6. The appearance inspection device for OLED water vapor barrier coating according to claim 5, characterized in that: The connecting rod (26a) is fixedly connected to the outside of the stepped telescopic clamp (24). The left connecting rod (26a) is slidably connected to the left side of the left bearing plate (23). The right connecting rod (26a) is slidably connected to the right side of the right bearing plate (23). The left electric telescopic rod (26d) is fixedly connected to the left side of the left bearing plate (23). The right electric telescopic rod (26d) is fixedly connected to the right side of the right bearing plate (23). The linkage rod (26c) is fixedly connected to the outside of the electric telescopic rod (26d). The rotating rod (26b) is rotatably connected to the outside of the linkage rod (26c) and the connecting rod (26a).

7. The appearance inspection device for OLED water vapor barrier coating according to claim 1, characterized in that: The outer side of the stepped telescopic clamping block (24) is movably connected to an elastic clamping pad (4).

8. The appearance inspection device for OLED water vapor barrier coating according to claim 1, characterized in that: The soaking pool (1) is movably connected to a drain outlet (5).

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