KR101264263B1

KR101264263B1 - A method for grinding egdgs of a thin glass plate

Info

Publication number: KR101264263B1
Application number: KR1020100051062A
Authority: KR
Inventors: 박재훈; 김표언
Original assignee: 주식회사 라미넥스
Priority date: 2010-05-31
Filing date: 2010-05-31
Publication date: 2013-05-22
Also published as: WO2011152646A2; KR20110131563A; WO2011152646A3

Abstract

TECHNICAL FIELD The present invention relates to a processing method and apparatus for thin glass, and more particularly, to a heat treatment method and an apparatus for processing an edge of thin glass.
The thin glass processing method of the present invention is characterized by processing the edges of the thin glass by passing the thin glass over the flame.
The method according to the present invention can prevent the glass from being broken during the grinding process, and can prevent the glass powder generated during the grinding process from contaminating the process. In addition, the strength of the grinding surface is improved after processing.

Description

Method and apparatus for grinding edges of glass sheets {A METHOD FOR GRINDING EGDGS OF A THIN GLASS PLATE}

TECHNICAL FIELD The present invention relates to a processing method and apparatus for thin glass, and more particularly, to a heat treatment method and an apparatus for processing an edge of thin glass.

As disclosed in WO 2005/044512, to process glass sheets requiring surface finishing, such as those used in flat panel display devices, generally requires cutting the glass sheet to the desired shape and then grinding and / Or polishing to remove sharp edges.

This method of holding, processing and transporting glass sheets has several disadvantages. First, the particles generated during corner finishing can be the main source of contamination on the surface of the glass sheet. Thus, glass sheets require extensive cleaning and drying at the end of the finishing process to clean and wash the generated particles. Of course, the additional steps of cleaning and drying at the end of the finish impact the basic cost of the finish line and increase the manufacturing cost. In addition, particles and chips caught between the belt and the glass sheet can seriously damage the surface of the glass sheet. Often, this damage can cause a series of machining steps to stop and result in a poor machining rate because the number of products that can be shipped to the customer is reduced.

In order to prevent this, Korean application No. 10-2006-7009339 discloses an encapsulation device for supporting two surfaces of glass and a processing device for processing an edge close to two supported surfaces of a material located on the first side of the encapsulation device. Wherein the encapsulation device discloses a device that substantially prevents particles and other contaminants that occur when the processing device processes an edge of a material from touching two surfaces of a material located on a second side of the encapsulation device. Doing.

In addition, the Republic of Korea Patent Application No. 10-2007-0047784 discloses a device for grinding the corner by going in the form of a diamond grinding wheel provided in the grinding device to cross.

In addition, in Korean Patent Application No. 10-2001-0085114, while chamfering a glass substrate using a diamond wheel, a nozzle is installed adjacent to the chamfering process, blown through the nozzle to blow powder, and fine particles generated during chamfering processing. Disclosed is a method of sucking compressed air containing glass particles.

However, since these methods are to process the corners using grinding or chamfering, it is inevitable that the generation of the glass powder can not be avoided, and also problems such as cracks on the corners in the grinding process, surface scratches due to glass dust, It is inevitable that various problems such as a problem of exposure are encountered.

Accordingly, there is a continuing need for a new processing method and apparatus that can prevent the generation of such glass dust.

The problem to be solved in the present invention is to provide a new processing method that can prevent the generation of glass powder generated during the corner processing of the thin glass.

Another problem to be solved by the present invention is to provide a new device that can be processed without grinding the edge of the thin glass.

In order to solve the problem as described above, the present invention is characterized in that the thin glass is passed through the upper flame, the edge of the thin glass to be processed by melting the edge of the flame.

In the present invention, the flame is a flame generated by combustion of combustion gas, preferably a gas between C1-C8, more preferably butane gas.

In the present invention, the flame is preferably a flame in a uniform form, more preferably a flame in which the combustion gas discharged through the porous plate is burned. In the practice of the present invention, it is preferable that the porous plate is a porous ceramic plate prepared by sintering ceramic particles into a plate shape.

Although not theoretically limited, when the flame passes through the thin glass, the oxygen at the bottom of the thin glass is exhausted and the flame at the bottom of the thin glass is turned off, and the flame at the corner of the thin glass rises up the side of the thin glass. The side edges, in particular the edges, are melted, and when the thin glass passes, the flame is again formed where the flame is extinguished.

In the present invention, the thin glass may be subjected to a preheating process of heating or cooling a predetermined temperature in order to adjust the degree of melting of the edge in the flame processing process, and after passing through the flame may be cooled by a slow cooling process. .

In the present invention, it is preferable that the thin glass is fixedly moved to a moving member that moves the flame top so as to pass through the flame top while maintaining a uniform height. The moving member is more preferably moved after fixing the upper surface by adsorbing so as not to interfere with the flame formed along the side of the thin glass.

In another embodiment of the present invention, the thin glass is a glass of a small size. It is also possible to pass through the top of the flame using air injected from one side in a state of being supported by the pressure of the gas ejected through the porous plate.

In one aspect of the present invention, the edge processing apparatus of the thin glass is a porous plate to which combustion gas is discharged to the surface, a gas supply device for supplying combustion gas to the porous plate, the glass substrate is fixed to pass over the flame of the porous plate It comprises a mobile device.

In the present invention, the fixing device of the glass substrate is in close contact with the upper surface of the glass substrate and fixed to the chamfering portion and the chamfering portion connected to the moving member, the fixed foot capable of selectively adjusting the upper and lower height, and the fixing foot porous It consists of a moving means moving in parallel along the plate.

In the present invention, the processing apparatus may optionally further include a preheating chamber or a cooling chamber at the front and rear ends of the apparatus.

In the present invention, the thin glass is glass for display, preferably thin glass for mobile phone display.

In one aspect, the present invention provides a laminated glass for display, characterized in that the edges of at least a part of the edge is molten.

In the thin glass according to the present invention, the edge forms a molten surface to form an impact resistant edge as compared to the ground edge.

The thin glass processing process according to the present invention does not go through the grinding process because the edge of the edge is heated by the flame to melt, it is possible to prevent the process of the generation of glass dust. This makes it possible to omit the steps necessary for suctioning, removing and washing the glass branches.

In addition, the processed glass according to the present invention is melted without grinding the edges of the corners to increase the strength, it can provide a glass resistant to external impact.

1 is a process chart showing a corner processing process of the glass substrate according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line AA ′ of FIG. 1.
3 is a cross-sectional view showing a state before and after processing of the edge of the glass substrate according to an embodiment of the present invention.

Hereinafter, embodiments will be described in detail with reference to the drawings. The following examples are described in detail, but it should be noted by those skilled in the art that they are not intended to limit the invention but merely to illustrate the invention.

The glass processing process of the present invention is shown in a cross-sectional view taken along line AA ′ of FIG. 1 of FIG. 1 and a cross-sectional view showing a state before and after the processing of the edge of the glass substrate of FIG.

As shown in Figures 1 to 3, the glass substrate 100 in the present invention is a glass substrate having a rectangular parallelepiped shape in the form of a plate, the edge portion before processing has a sharp edge.

As shown in FIG. 1, the glass substrate 100 passes through the porous plate 200 having a flame formed on the surface thereof, and the edges thereof are melted to process sharp edges.

The porous plate 200 may be manufactured by pressing and sintering ceramic particles of various sizes in a plate shape, and a plurality of fine pores may be formed on the surface to uniformly discharge the combustion gas.

Combustion gas plate 300 is formed below the porous plate 200, and the combustion gas plate 300 is empty inside, a combustion gas pipe 301 for supplying combustion gas to one side is connected, and a combustion gas pipe 301 is attached with a control valve 303 that can adjust the flow rate of the combustion gas. The type of combustion gas may be selected by those skilled in the art in consideration of the heat amount, the maximum combustion temperature, and the like of the combustion gas, and preferably butane gas.

The gas emitted from the surface of the porous plate 200 is burned by the flame 210, and the flame on the porous plate 200 is directly under the surface 230 of the glass substrate 200 when passing through the glass substrate 100. In this case, the flame is turned off due to lack of oxygen, and the edge portion 240 of the glass substrate 200 rises up the side of the glass substrate 200 to melt the upper edge 220 of the glass substrate 100. After the glass substrate 200 passes, the flame is ignited again.

The glass substrate 100 is chamfered by the vacuum from the supply plate 410 by the moving member 400, and moves with the movement of the moving member 400. The moving speed of the moving member 400 may be determined in accordance with the time required for the edge of the glass substrate 100 to melt in the flame.

The distance between the glass substrate 100 and the porous plate 200 is that the flame on the porous plate 200 is turned off when the flame on the porous plate 200 passes through the glass substrate 100 so that the surface of the glass substrate 100 is not exposed to the flame. It is good to maintain the height, and can be determined in consideration of the size of the glass substrate 100 and the combustion gas. For example, when the butane gas is burned to process a glass substrate of about 4 inches used for a mobile phone, the distance between the plate and the substrate is preferably about 1-10 mm.

The glass substrate 100 passes through the porous plate 200 and is cornered, and then is cooled slowly in the storage plate 500. The storage plate 500 may be maintained at a constant temperature to prevent quenching. In addition, the glass substrate 100 may be supplied after being preheated in the supply plate 410 at a predetermined temperature to facilitate the melt processing of the corner while passing through the porous plate 200.

FIG. 2 is a cross-sectional view taken along the line AA ′ of FIG. 1, and as shown in FIG. 2, the flame rises along the left and right sides of the advancing direction of the glass substrate 200 to process the edges.

3 is a view showing before and after corners of the glass substrate 100, the edge of the glass substrate 100 is selectively removed by the heat of the flame to form a surface 700 that is removed by melting at the corner.

Claims

Combusting fuel gas discharged through the porous plate to form a flame on the surface of the porous plate; And
Passing a glass plate over the flame of the porous plate, while melting the edge of the glass plate with the flame while maintaining the distance between the glass plate and the porous plate at a height where the flame is extinguished directly below the glass plate;
Glass plate edge processing method comprising a.

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The method according to claim 1, wherein the flame is a combustion flame of a hydrocarbon gas having 1 to 8 carbon atoms.

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A porous plate in which fuel gas is released and burned to form a flame on the surface; And means for fixing and moving the glass plate to the upper portion of the porous plate, and passing the glass plate over the flame of the porous plate by means of fixing and moving the glass plate, wherein the distance between the glass plate and the porous plate is increased. A glass plate edge processing apparatus, characterized in that the edge of the glass plate is melt-processed while maintaining at a height that the flame is extinguished directly below the glass plate.

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