KR101743479B1

KR101743479B1 - Processing method for display glass vision inspection appratus

Info

Publication number: KR101743479B1
Application number: KR1020150188474A
Authority: KR
Inventors: 이성희; 김수길; 민상기; 정재훈
Original assignee: (주)진성이엔지
Priority date: 2015-12-29
Filing date: 2015-12-29
Publication date: 2017-06-07

Abstract

The present invention relates to a display glass vision inspection process method, and more particularly, to a display glass vision inspection process method for inspecting defects of glass and sheets used in a display, It is possible to arrange a plurality of inspection objects sequentially corresponding to one surface of the inspected object to be inspected so that a plurality of inspection items can be inspected sequentially so that the defective inspection of a plurality of items can be solved in one device, And more particularly, to a display glass vision inspection process method capable of ensuring defective and defective inspection of a certain product.

Description

TECHNICAL FIELD [0001] The present invention relates to a process for inspecting a display glass,

The present invention relates to a processing method capable of judging whether or not an inspection object is reliably defective in a vision inspection for inspecting surface bonding states of various glasses and sheets used in a display.

In recent years, tempered glass substrates have been mainly used for display devices that are mounted on multimedia devices, smart phones, TVs, and Phablets, and images are formed, and sheets and flexible materials are also applied .

Glass of reinforced glass substrate may be defective due to various factors in the process of being made from the molding process (cutting, polishing, cleaning, drying, strengthening treatment, coating, etc.) to final product. The defects mentioned here refer to scratches, stains, scratches, foreign matter, cracks, black spots, and the like generated on the glass substrate. If defects are present on the glass substrate, the entire display performance is deteriorated and, in some cases, it is required to be treated as a defective product.

Conventionally, inspection of a glass substrate has been performed by a visual inspection of a worker. This method is a method of inspecting one surface of an inspection object and then inspecting the back surface of the inspection object. The deviation of the inspection result according to the skill and condition of the operator The reliability was poor. And, in handling the object to be inspected, carelessness often caused secondary contamination and defect.

Therefore, although a few companies have constructed inspection apparatuses using a jig or semi-auto method, they have not been able to solve problems such as insufficient detection capability, insufficient type of defect discrimination, and reliability uncertainty. Problems of the conventional inspection apparatus will be briefly described as follows.

(1) Due to the diffuse reflection of light, it is impossible to inspect the crack of the cover glass interface (FIG. 4).

② In order to inspect the defective surface of the product, a separate inspection system is required to rotate the product by 90 ° twice. (Figure 5)

③ Other system for printing inspection, logo inspection, foreign body inspection and inspection of shot should be separately configured.

④ Generally, in a clean room, a magnetic conveyor is used to prevent foreign matter from being transported, thereby causing discontinuous operation of magnetic (Fig. 6).

⑤ Slip, bump, and wave phenomenon occur due to the application of conveyor roller system. In order to solve this problem, if the product transfer method is changed to robot, unchecked area may occur due to interference of inspection area. 7)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a display device for inspecting surface defects of various glass and sheets used as display components and automatically transferring an inspection object toward one direction without shaking A plurality of inspecting bodies are provided in correspondence with the conveying direction of the inspected object to be moved in such a manner that the installation forms of the inspection bodies are different from each other so that cracks, scratches, presence of foreign substances, And a method of inspecting the display glass vision so that the defect can be accurately and easily discriminated.

Other objects and advantages of the present invention will be described hereinafter and will be understood by the embodiments of the present invention. Further, the objects and advantages of the present invention can be realized by the means and the combination shown in the claims.

In order to solve the above-mentioned problems, the present invention provides a method of mounting a test object (G) on a mounting device of a transfer unit (10) through a mounting means (S100); A step S200 of transferring the inspection object G through the transfer unit 10 in one direction; A step S300 of firstly inspecting the defect of the object G to be inspected by the first inspecting body 21 provided at one side of the transferring unit 10; A step (S400) of inspecting whether or not a defect of the object to be inspected (G) is secondarily detected by a second inspection object (22) provided adjacent to the first inspection object (21) while corresponding to one surface of the transfer part (10); A step (S500) of inspecting the presence or absence of defects of the object to be inspected (G) by a third inspection body (23) provided adjacent to the second inspection body (22) in correspondence with one surface of the transfer unit (10); And < RTI ID = 0.0 >

As described above, according to the present invention,

① In a typical crack inspection system, light is emitted by the printed part of the cover glass

It is impossible to detect cracks due to the lack of transmission. However, in the present invention, this problem is solved by applying the coaxial light source method.

② By integrating various lighting systems such as coaxial illumination, backlighting, and side lighting system into one system, it is possible to inspect the crack of cover glass, and it is possible to make scratching and inspection of foreign objects as one system. have.

(3) Through the conveyance of the object to be inspected using the LM guide, there is an effect that the vibration occurring in the conveyor for conveying the object to be inspected and the slip, bump, and wave phenomenon of the object to be inspected do not occur.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a flow diagram of an embodiment of a display glass vision inspection process according to the present invention.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a display glass vision inspection method.
3 is a perspective view of an embodiment of a vision inspection apparatus to which a display glass vision inspection method according to the present invention is applied.
4 is a view showing a conventional cover-class interface crack inspection example;
5 shows a conventional 90 ° inspection system according to a surface scratch direction;
6 is an illustration of an embodiment showing surface defects due to discontinuous drive of conventional product transport.
7 is a view of one embodiment showing a problem factor according to a conventional conveyor conveying system.

Before describing in detail several embodiments of the invention, it will be appreciated that the application is not limited to the details of construction and arrangement of components set forth in the following detailed description or illustrated in the drawings. The invention may be embodied and carried out in other embodiments and carried out in various ways. It should also be noted that the device or element orientation (e.g., "front,""back,""up,""down,""top,""bottom, Expressions and predicates used herein for terms such as "left,"" right, "" lateral, " and the like are used merely to simplify the description of the present invention, Or that the element has to have a particular orientation.

The present invention has the following features in order to achieve the above object.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

According to one embodiment of the present invention,

(S100) in which the object to be inspected (G) is mounted on the mounting device of the transfer unit (10) through the mounting means; A step S200 of transferring the inspection object G through the transfer unit 10 in one direction; A step S300 of firstly inspecting the defect of the object G to be inspected by the first inspecting body 21 provided at one side of the transferring unit 10; A step (S400) of inspecting whether or not a defect of the object to be inspected (G) is secondarily detected by a second inspection object (22) provided adjacent to the first inspection object (21) while corresponding to one surface of the transfer part (10); A step (S500) of inspecting the presence or absence of defects of the object to be inspected (G) by a third inspection body (23) provided adjacent to the second inspection body (22) in correspondence with one surface of the transfer unit (10); And < RTI ID = 0.0 >

In step S300, the first camera 21a, the first lens 21b, and the first illumination 21c of the first inspection object 21 are arranged in a straight line on one surface of the object to be inspected G, , And the presence or absence of cracks, scratches, and foreign substances in the inspection object (G) is examined.

In step S400, the second camera 22a, the second lens 22b, and the second illumination 22c of the second inspection object 22 are aligned with the object G, and the second camera 22a, The second lens 22b is positioned on the front surface of the object G and the second illumination 22c is positioned on the rear surface of the object G and the inspection object G ) Is printed and the logo defect is inspected.

In step S500, the third camera 23a, the third lens 23b, and the third light 23c of the third inspected object 23 are arranged in a corresponding manner So that the inspection process is carried out and the unevenness of the inspection object G is inspected.

The process sequence of steps S300, S400, and S500 may be sequentially performed according to the arrangement order of the first, second, and third inspection objects 21, 22, Can be changed.

Hereinafter, a display glass vision inspection method according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 7. FIG.

As shown in the figure, the display glass vision inspection process according to the present invention comprises steps S100 to S500 as follows.

1. A step S100 of mounting the inspection object G to the mounting device of the transfer unit 10 through the mounting means: (For example, various kinds of glass and sheets widely used as display components, etc.) to be inspected through a conveying unit (not shown in the drawings) (10). At this time, the inspection object G to be mounted is fixedly mounted so as to be reciprocatable in the longitudinal direction of the transfer unit 10 by the transfer unit 10, and a jig for mounting the inspection object G is mounted on the transfer unit 10 It must be installed.

The object G to be inspected is installed so as to face the front surface (or rear surface) of the conveying unit 10 and the inspected object G installed so as to face the front surface of the conveying unit 10, (Or left, right direction) through the base 10 in the forward and backward directions.

In addition, although the LM guide is used as the conveying unit 10, various conveying devices may be used depending on the user, so long as the conveying unit 10 can stably convey the inspection target G toward one direction. It is possible to mount and fix the object G on the upper surface of the separate main frame unit 30 so that the object G can be floatingly mounted and unidirectionally conveyed without shaking.

2. Step S200 of conveying the inspection object G in one direction through the conveyance unit 10: When the inspection object G is mounted on the conveyance unit 10 through the step S100, the conveyance unit 10 is separated (Not shown) of the inspection target G to the predetermined speed and direction.

At this time, the object G to be inspected conveyed by the conveying unit 10 is stopped for a predetermined time for each position corresponding to a plurality of inspected objects to be described later, and then repeatedly transferred to the next inspected object, It is possible to continuously pass a plurality of inspected objects at a predetermined speed without stopping at a position corresponding to the inspected object during transfer of the object G through the transfer unit 10 or to transfer the inspected object G at a predetermined speed , And at a position corresponding to the inspected object, at a relatively slower speed than the predetermined speed, various methods can be selected by the user, so that the method is not limited thereto.

In addition, the speed, the stopping moment, the operation and the like of the transferring unit 10 can be controlled in real time or can be controlled in advance in the control unit.

3. In step S300, the presence or absence of defects of the object to be inspected is firstly inspected by the first inspector 21 installed on one side of the transfer part 10: The inspection object is conveyed toward the one direction of the conveyance unit 10 through the conveyance unit 10 and firstly the inspection object G corresponds to the inspection object. The inspection object is referred to as a first inspection object 21 for convenience of explanation. The first, second, and third inspection bodies 21, 22, and 23 are referred to as the inspection unit 20).

The first inspection body 21 has three configurations of the first camera 21a, the first lens 21b and the first illumination 21c, like the second and third inspection bodies 22 and 23 to be described later. And is fixed to the upper surface of the main frame unit 30 on which the transfer unit 10 is installed. As described above, a plurality of inspection bodies are spaced apart from each other and spaced apart from each other on a surface of the transfer unit 10 .

In the first inspection body 21, an illumination object 21c, a first lens 21b, and a first camera 21a correspond to the object to be inspected G, which is conveyed by the conveyance unit 10, The first inspection body 21 is a step of inspecting whether cracks, scratches or foreign substances are present on the surface of the object G to be inspected.

Of course, the information thus inspected may be transmitted to a separate control unit and stored in the database, so that the result can be monitored and identified externally (ex: information (reference information stored in advance in the control unit) Picture information, etc.) to judge whether it is defective or not), which is also applied to the second inspection member 22 and the third inspection member 23 which will be described later.

4. In operation S400, the presence or absence of a defect in the inspection object G is secondarily inspected by the second inspection body 22 provided adjacent to the first inspection body 21 in correspondence with the one surface of the transfer unit 10, The step S400 is a step for performing a secondary inspection of the object G to be inspected after completion of the first inspection process for cracks, scratches, foreign matter or the like, through the above-described step S300.

That is, the inspection object G whose inspection is completed by the first inspection body 21 is moved to the second inspection body 22 provided adjacent to the first inspection body 21 by the transfer unit 10, The inspection of the car is performed, but the defects of the print and the logo formed on the inspection object G are inspected.

In this case, the second inspection object 22 is printed and the logo is inspected on the inspection object G, so that the second inspection object 22 is moved to another second camera 22a The second lens 22b and the second illumination 22c are in line with the object to be inspected G and the second lens 22b and the second camera 22a are arranged on one surface And the second illumination 22c has a structure in which the second lens 22b and the second camera 22a are opposed to each other on the rear surface of the object G to be inspected.

5. Step S500 of inspecting the presence or absence of defects of the object to be inspected by the third inspected object 23 provided adjacent to the second inspected object 22 in correspondence with the one surface of the transfer unit 10, In step S500, the inspection object G having been subjected to the first and second inspection processes by the first and second inspection bodies 21 and 22 is transferred to a position corresponding to the transfer unit 10, In step S500, the third inspection object 23 is inspected for the unevenness on the surface of the object G to be inspected.

At this time, the third inspected object 23 also includes a third camera 23a, a third lens 23b, and a third illuminator 23c. The third lens 23b and the third camera 23a are inspected And the third illumination 23c is disposed at a position different from the position of the third lens 23b and the third camera 23c by the third lens 23b and the third lens 23b, 3 camera 23a is arranged obliquely on the left side of one side of the inspected object G and the third illuminator 23c is disposed obliquely on one side of the specimen G) So that the irregularities of the object G to be inspected are inspected.

In addition, the steps S300, S400, and S500 may be changed in various orders depending on the order in which the users are arranged. In order to use only one of S300, S400, and S500, or two or more processes, S300, S400, and S500 are repeated so that only one or two processes selected for use may be repeated.

The inspection object G that has been subjected to the process up to step S500 described above can be removed from the transfer unit 10 through separate mounting means and divided into normal or defective and can be stored and then the transfer unit 10 performs step S100 It would be natural for the operation to return to the home position.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

10: transfer part 20: inspection part
21: first inspection body 21a: first camera
21b: first lens 21c: first illumination
22: second inspection body 22a: second inspection body
22b: second lens 22c: second illumination
23: third inspection member 23a: third camera
23b: third lens 23c: third illumination
30: main frame part G: object to be inspected

Claims

A step S100 of mounting the inspection object G on the mounting unit of the transferring unit 10 mounted on the upper surface of the main frame unit 30 and mounting the jig for mounting the inspection object G, ;
A step S200 of transferring the inspection object G through the transfer unit 10 in one direction;
A step S300 of firstly inspecting whether or not the inspection object G is defective by the first inspection body 21 provided on the one side of the transfer unit 10;
A step (S400) of inspecting whether or not a defect of the object to be inspected (G) is secondarily detected by a second inspection object (22) provided adjacent to the first inspection object (21) while corresponding to one surface of the transfer part (10);
A step (S500) of inspecting the presence or absence of defects of the object to be inspected (G3) by the third inspected object (23) provided adjacent to the second inspected object (22) in correspondence to the one surface of the transfer part Lt; / RTI >
In step S200, the transporting unit 10 transports the inspection object G toward the predetermined speed and direction through the control of the controller, and the inspection object G transported by the transporting unit 10 corresponds to a plurality of inspection objects Or the object to be inspected G is continuously conveyed through the conveying unit 10 without stopping at a position corresponding to the inspected object during the conveyance through the conveying unit 10, A plurality of inspection objects are continuously passed at a predetermined speed or the inspection object G is transported at a predetermined speed at a relatively slower speed than a predetermined speed at a position corresponding to the inspection object, The speed, the stopping moment, and the operation of the control unit 10 are controlled or preset in real time by the control unit,
In step S300, the first camera 21a, the first lens 21b, and the first illumination 21c of the first inspection object 21 are arranged in a line on one surface of the object to be inspected G , The presence or absence of cracks, scratches, and foreign substances in the inspection object G is checked,
In step S400, the second camera 22a, the second lens 22b, and the second illumination 22c of the second inspection object 22 are aligned with the object G and the second camera 22a, The second lens 22b is positioned on the front surface of the object G and the second illumination 22c is positioned on the rear surface of the object G to be inspected. Printing and logo defects are checked,
In step S500, the third camera 23a, the third lens 23b, and the third light 23c of the third inspected object 23 are disposed on the object G in an inclined manner at a predetermined angle, The process proceeds, the unevenness of the object to be inspected G is inspected,
The process sequence of steps S300, S400, and S500 is sequentially performed sequentially and the process sequence of steps S300, S400, and S500 is changed in accordance with the arrangement order of the first, second, and third inspection objects 21, 22, Wherein the method comprises the steps of:

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