Diffusion plate microscopy apparatus

Abstract

The utility model relates to a kind of diffusion plate mirror inspection equipment, including horizontal conveying roller group, the conveying roller group is sequentially provided with first dust removal mechanism, secondary dust removal mechanism, electrostatic removal mechanism, visual inspection system from front to back along the conveying direction of diffusion plate.The diffusion plate mirror inspection equipment realizes the surface dust removal of diffusion plate first, then carries out electrostatic removal, avoids the dust and microparticle floating in air to be adsorbed to the diffusion plate surface with static electricity again, improves the accuracy of visual inspection.

Description

Technical Field

[0001] This utility model relates to a diffuser plate microscopic examination device. Background Technology

[0002] A diffusion plate is a key functional material in the production of optoelectronic display devices such as liquid crystal displays. Its main function is to transform point or line light sources in the backlight module into uniform surface light sources to ensure the brightness consistency and color reproduction of the display panel.

[0003] Before visually inspecting surface defects of a diffuser plate, it is necessary to clean the surface dust to avoid misjudging defects due to dust. After cleaning the surface dust of the diffuser plate, dust and particles floating in the air can easily re-adhere to the electrostatically charged surface of the diffuser plate. These deposits may be misjudged as surface defects (such as foreign objects, pits, etc.), increasing the false alarm rate.

[0004] Based on this, in order to solve the above technical problems, this case proposes a diffusion plate microscopic examination device. Utility Model Content

[0005] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a diffusion plate microscopic examination device.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a diffuser plate microscopic inspection device, including a horizontal conveying roller group, wherein a primary dust removal mechanism, a secondary dust removal mechanism, an anti-static mechanism, and a visual inspection system are arranged sequentially from front to back along the conveying direction of the diffuser plate on the conveying roller group.

[0007] Preferably, the device further includes a device housing, the interior of which is fixed with a vertical partition, which separates the front inner part and the rear inner part of the device housing, so that the front inner part forms a front chamber for installing a secondary dust removal mechanism, and the rear inner part forms a rear chamber for installing an antistatic mechanism and a vision inspection system.

[0008] Preferably, the front and rear sides of the equipment housing and the vertical partition are provided with inlet and outlet openings, and the conveying roller group passes through the inlet and outlet openings on the front side of the equipment housing, the inlet and outlet openings on the vertical partition, and the inlet and outlet openings on the rear side in sequence from front to back.

[0009] Preferably, the primary dust removal mechanism is located on the outer side of the inlet / outlet opening on the front side of the equipment housing, and includes a primary air blowing duct located above the conveyor roller group and blowing air obliquely downward from back to front. The primary air blowing duct extends along the width direction of the diffuser plate and has several air outlets spaced apart on it.

[0010] Preferably, a primary dust suction hood is provided at the top of the primary air blowing duct, the opening of the primary dust suction hood faces downward and the top is connected to a negative pressure suction duct.

[0011] Preferably, the secondary dust removal mechanism includes a secondary front blowing duct and a secondary rear blowing duct disposed above the conveying roller group in the front chamber. Both the secondary front and rear blowing ducts extend along the width direction of the diffuser plate and are provided with a number of air outlets at intervals. The secondary front blowing duct blows air diagonally downward from front to back, and the secondary rear blowing duct blows air diagonally downward from back to front.

[0012] Preferably, a secondary upper dust suction hood is provided above the conveying roller assembly of the front chamber and located at the top of the secondary front and rear blowing pipes, and a secondary lower dust suction hood is provided below the conveying roller assembly of the front chamber. The opening of the secondary upper dust suction hood faces downward and is connected to a negative pressure suction pipe at the top, while the opening of the secondary lower dust suction hood faces upward and is connected to a negative pressure suction pipe at the bottom.

[0013] Preferably, the static elimination mechanism includes a front ionizing air bar and a rear ionizing air bar disposed above the conveying roller group in the rear chamber. Both the front and rear ionizing air bars blow airflow with positive and negative charges from front to back at an angle downward toward the diffuser plate.

[0014] Preferably, the visual inspection system includes an illumination source disposed below the roll gap of the conveyor roller assembly in the rear chamber. The length of the illumination source extends along the width of the diffuser plate, and the length of the illumination source is greater than the width of the diffuser plate. A camera lens is disposed directly above the illumination source at the top of the conveyor roller assembly.

[0015] Preferably, a three-stage dust suction hood is provided on the outer side of the inlet / outlet on the rear side of the equipment housing, above the conveyor roller assembly. The opening of the three-stage dust suction hood faces downward and is connected to a negative pressure suction pipe at the top.

[0016] Compared with the prior art, the present invention has the following beneficial effects: the diffuser plate microscopic inspection equipment first removes dust from the surface of the diffuser plate and then removes static electricity, which prevents dust and particles floating in the air from being re-adsorbed onto the surface of the statically charged diffuser plate, thereby improving the accuracy of visual inspection.

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model.

[0019] Figure 2 This is a partial top view of a single rotating roller in a conveyor roller assembly. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0022] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0023] like Figures 1-2 As shown, this embodiment provides a diffuser plate microscopic inspection device, including a horizontal conveyor roller group 1. The conveyor roller group is provided with a primary dust removal mechanism 3, a secondary dust removal mechanism 4, an anti-static mechanism 5, and a visual inspection system 6 arranged sequentially from front to back along the conveying direction of the diffuser plate 2.

[0024] In this embodiment of the utility model, the device further includes a device housing 7, and a vertical partition 8 is fixedly provided inside the device housing. The vertical partition separates the inner front part and the inner rear part of the device housing, so that the inner front part forms a front chamber 9 for installing a secondary dust removal mechanism, and the inner rear part forms a rear chamber 10 for installing an anti-static mechanism and a vision inspection system.

[0025] In this embodiment of the utility model, the front and rear sides of the equipment box and the vertical partition are provided with inlet and outlet slots 11. The conveying roller group passes through the inlet and outlet slots on the front side of the equipment box, the inlet and outlet slots on the vertical partition, and the inlet and outlet slots on the rear side in sequence from front to back.

[0026] In this embodiment of the utility model, the primary dust removal mechanism is located on the outer side of the inlet and outlet on the front side of the equipment box, and includes a primary air blowing pipe 12 located above the conveyor roller group and blowing air obliquely downward from back to front. The primary air blowing pipe extends along the width direction of the diffuser plate and has a number of air outlets spaced apart on it.

[0027] In this embodiment of the utility model, a primary dust suction hood 13 is provided at the top of the primary air blowing duct, and the opening of the primary dust suction hood faces downward and is connected to a negative pressure suction duct 14 at the top.

[0028] In this embodiment of the utility model, the secondary dust removal mechanism includes a secondary front blowing pipe 15 and a secondary rear blowing pipe 16 disposed above the conveying roller group in the front chamber. Both the secondary front and rear blowing pipes extend along the width direction of the diffuser plate and are provided with a number of air outlets at intervals. The secondary front blowing pipe blows air diagonally downward from front to back, and the secondary rear blowing pipe blows air diagonally downward from back to front.

[0029] In this embodiment of the present invention, a secondary upper dust suction hood 17 is provided above the conveying roller assembly of the front chamber and located at the top of the secondary front and rear blowing pipes. A secondary lower dust suction hood 18 is provided below the conveying roller assembly of the front chamber. The opening of the secondary upper dust suction hood faces downward and is connected to a negative pressure suction pipe at the top. The opening of the secondary lower dust suction hood faces upward and is connected to a negative pressure suction pipe at the bottom.

[0030] In this embodiment of the utility model, the static elimination mechanism includes a front ionizing air bar 19 and a rear ionizing air bar 20 disposed above the conveying roller group in the rear chamber. Both the front and rear ionizing air bars blow airflow with positive and negative charges from front to back at an angle downward toward the diffuser plate.

[0031] In this embodiment of the present invention, the visual inspection system includes an illumination source 21 disposed below the roll gap of the conveyor roller assembly in the rear chamber. The length direction of the illumination source extends along the width direction of the diffuser plate, and the length of the illumination source is greater than the width of the diffuser plate. A camera lens 22 is disposed directly above the illumination source and located at the top of the conveyor roller assembly.

[0032] In this embodiment of the present invention, a three-stage dust suction hood 23 is provided on the outer side of the inlet and outlet seam on the rear side of the equipment box above the conveying roller group. The opening of the three-stage dust suction hood faces downward and the top is connected to a negative pressure suction pipe.

[0033] In this embodiment of the invention, each roller of the conveying roller assembly includes a roller shaft 24, on which a plurality of spaced circular roller plates 25 are coaxially fixed. The outer diameter of the circular roller plates is larger than that of the roller shaft, and they are made of rubber to contact and convey the diffuser plate.

[0034] In this embodiment of the invention, the working principle of the diffusion plate microscopic examination device is as follows:

[0035] The diffuser plate is conveyed from front to back via a set of conveyor rollers. When the diffuser plate reaches the primary dust removal mechanism, surface dust is blown away by the primary air duct, and most of the dust is sucked away by the primary dust suction hood. When the diffuser plate enters the front chamber of the equipment housing and reaches the secondary dust removal mechanism, surface dust is blown away again by the secondary front and rear air ducts, and the dust is sucked away by the secondary upper and lower dust suction hoods to prevent floating dust from falling back. When the diffuser plate enters the rear chamber of the equipment housing and reaches the front and rear ion air bars, the front and rear ion air bars blow airflows with positive and negative charges at an angle downwards towards the diffuser plate from front to back, neutralizing the charge on the diffuser plate, removing static electricity, and preventing floating dust from being attracted to the surface of the diffuser plate again due to static electricity. When the diffuser plate reaches the vision inspection system, the lighting source and camera lens work together to perform visual inspection. The inspected diffuser plate is sent out through the inlet / outlet on the rear side of the equipment housing. The tertiary dust suction hood on the side of the inlet / outlet on the rear side of the equipment housing is used to suction dust near the outside of the inlet / outlet, preventing dust from entering the rear chamber through the inlet / outlet.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A diffuser plate microscopic inspection device, comprising a horizontal conveyor roller assembly, characterized in that: The conveying roller assembly is provided with a primary dust removal mechanism, a secondary dust removal mechanism, an anti-static mechanism, and a vision inspection system in sequence from front to back along the conveying direction of the diffuser plate.

2. The diffusion plate microscopic examination device according to claim 1, characterized in that: The device also includes a device housing, the interior of which is fixed with a vertical partition. The vertical partition separates the front inner part and the rear inner part of the device housing, so that the front inner part forms a front chamber for installing a secondary dust removal mechanism, and the rear inner part forms a rear chamber for installing an anti-static mechanism and a vision inspection system.

3. The diffusion plate microscopic examination device according to claim 2, characterized in that: The equipment housing has inlet and outlet openings on its front and rear sides and on its vertical partitions. The conveying roller group passes through the inlet and outlet openings on the front side of the equipment housing, the inlet and outlet openings on the vertical partitions, and the inlet and outlet openings on the rear side in sequence from front to back.

4. The diffusion plate microscopic examination device according to claim 3, characterized in that: The primary dust removal mechanism is located on the outside of the inlet / outlet on the front side of the equipment housing, and includes a primary air blowing duct located above the conveyor roller group and blowing air diagonally downward from back to front. The primary air blowing duct extends along the width direction of the diffuser plate and has several air outlets spaced apart on it.

5. The diffusion plate microscopic examination device according to claim 4, characterized in that: The top of the primary air blowing duct is equipped with a primary dust suction hood, the opening of which faces downwards and is connected to a negative pressure suction duct at the top.

6. The diffusion plate microscopic examination device according to claim 3, characterized in that: The secondary dust removal mechanism includes a secondary front air blowing duct and a secondary rear air blowing duct located above the conveyor roller group in the front chamber. Both the secondary front and rear air blowing ducts extend along the width direction of the diffuser plate and have several air outlets spaced apart on them. The secondary front air blowing duct blows air diagonally downward from front to back, and the secondary rear air blowing duct blows air diagonally downward from back to front.

7. The diffusion plate microscopic examination device according to claim 6, characterized in that: Above the conveying roller assembly of the front chamber is a secondary upper dust suction hood located at the top of the secondary front and rear blowing pipes, and below the conveying roller assembly of the front chamber is a secondary lower dust suction hood. The opening of the secondary upper dust suction hood faces downward and is connected to a negative pressure suction pipe at the top, while the opening of the secondary lower dust suction hood faces upward and is connected to a negative pressure suction pipe at the bottom.

8. The diffusion plate microscopic examination device according to claim 3, characterized in that: The static elimination mechanism includes a front ionizing air bar and a rear ionizing air bar located above the conveying roller group in the rear chamber. Both the front and rear ionizing air bars blow airflow with positive and negative charges from front to back at an angle downward toward the diffuser plate.

9. The diffusion plate microscopic examination device according to claim 3, characterized in that: The visual inspection system includes an illumination source located below the roll gap of the conveyor roller assembly in the rear chamber. The length of the illumination source extends along the width of the diffuser plate, and the length of the illumination source is greater than the width of the diffuser plate. A camera lens is located directly above the illumination source at the top of the conveyor roller assembly.

10. The diffusion plate microscopic examination device according to claim 3, characterized in that: A three-stage dust collection hood is installed on the outer side of the inlet / outlet at the rear of the equipment housing, above the conveyor roller assembly. The opening of the three-stage dust collection hood faces downward and is connected to a negative pressure suction pipe at the top.

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