KR20170121373A - Method and Apparatus for Processing the Hole of Glass Stacker - Google Patents

Abstract

A method and an apparatus for processing a hole on a glass laminate are provided. The method for processing a hole on a glass laminate comprises the following steps: preparing a glass laminate in which an upper glass substrate and a lower glass substrate are laminated; forming a first groove having a predetermined depth on the upper glass substrate by rotational force of a first grinding wheel moving up and down with respect to the upper glass substrate; forming a second groove adjacent to a boundary region between the upper glass substrate and the lower glass substrate by being lengthened by a certain depth from the bottom surface of the first groove due to the rotational force of the second grinding wheel moving up and down with respect to the first groove; separating and removing a core body of the upper glass substrate remaining in the second groove to form a mounting hole through which the lower glass substrate is exposed.

Description

TECHNICAL FIELD [0001] The present invention relates to a method for processing a hole in a glass laminate,

The present invention relates to a method and an apparatus for processing a blind hole in a glass laminate, and more particularly, to a blind hole having a blind hole-shaped mounting hole in which a bottom surface is closed to easily insert a component into a glass laminate, To a hole processing method and a processing apparatus for a glass laminate.

In general, various flat panel display devices capable of reducing weight and volume, which are disadvantages of a cathode ray tube, have been developed and popularized on the market.

As a flat panel display device, a liquid crystal display device, a plasma display panel (PDP), a field emission display device, a light emitting display device and the like are actively studied However, the liquid crystal display device is in the spotlight due to the advantages of mass production technology, ease of driving means, and realization of high image quality.

Among these displays, the LCD is polarized when the light passes through the upper polarizer using the refractive index anisotropy, dielectric anisotropy, and elasticity properties of the liquid crystal, and the liquid crystal layer having different twist and tilt degrees depending on the applied voltage. And displays information by a controlled amount of light transmitted through the lower polarizer.

LCDs are classified into passive matrix LCDs and active matrix LCDs. A typical example of an active matrix display having excellent display quality is a TFT-LCD. When a voltage is applied to a liquid crystal, It transmits voltage information.

In general, the structure of LCD can be roughly divided into BLU and LC panel. Processes for manufacturing the LCD are divided into TFT process, color filter process, cell process, and module process. do.

A TFT-LCD panel in which a glass laminate having two glass substrates laminated through the TFT process and the CF process is put into a cell process to form one panel, a panel subjected to a cell process is passed through a module process, Is finally completed.

Recently, laptops with built-in cameras for video chatting and video conferencing have been introduced as products, which require a separate space for installation of the image camera, so that the width of the lid of the notebook screen is further increased, , Which made it difficult to design various innovative designs.

Patent Document 1 discloses a glass processing apparatus for processing a hole in a glass material. However, as a conventional glass processing apparatus, a module component such as a camera module is bought into a glass laminate in which upper and lower glass substrates are stacked vertically It is difficult to precisely process a separate mounting blind hole for mounting.

(Patent Document 1) KR10-2008-0106680 A

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a glass laminate capable of easily and precisely forming a mounting hole in the form of a blind hole in which a bottom surface is closed to embed a component in a glass laminate And to provide a hole processing method and a machining apparatus of the same.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, unless further departing from the spirit and scope of the invention as defined by the appended claims. It will be possible.

As a specific means for accomplishing the above object, a preferred embodiment of the present invention provides a method of manufacturing a glass laminate, comprising: preparing a glass laminate in which an upper glass substrate and a lower glass substrate are laminated; Forming a first groove having a predetermined depth on the upper glass substrate by a rotational force of a first grinding wheel moving up and down with respect to the upper glass substrate; And a second groove adjacent to the boundary region between the upper glass substrate and the lower glass substrate is formed by a certain depth from the bottom surface of the first groove by the rotational force of the second polishing wheel which is raised and lowered with respect to the first groove step ; Separating and removing a core body of the upper glass substrate remaining in the second groove to form a mounting hole through which the lower glass substrate is exposed; And a method for processing a hole in a glass laminate.

Preferably, the forming of the first groove may include forming a first groove having an inner side and an outer side perpendicular to the horizontal bottom surface by the hollow first polishing portion provided on the first polishing wheel.

Preferably, the step of forming the second grooves may include a first and a second circumferential inclined surface extending obliquely downwardly from an outer circumferential surface of an end portion of the hollow second polishing portion provided on the second polishing wheel, Shaped second groove formed by the outer inclined surface and the inner inclined surface by the inner peripheral inclined surface which is inclined downwardly from the first inclined surface and abuts on the second inclined inclined surface.

More preferably, the step of forming the second groove may include forming an upper inclined surface at an upper end of a vertical outer surface of the first groove, the outer inclined surface extending outwardly by the first outer peripheral inclined surface.

Preferably, the step of forming the second groove may include forming an inner diameter of the first polishing portion provided at an end of the first polishing wheel relatively larger than an inner diameter of the second polishing portion provided at an end of the second polishing shaft, In forming the two grooves, the inner peripheral surface of the second polishing portion and the outer peripheral surface of the core body may be spaced apart from each other.

Preferably, the first grinding wheel includes a hollow first polishing portion provided at an end of a first wheel assembly assembled to the first spindle, and a second grinding portion provided at a first grinding portion in which the bonding material and the abrasive are mixed at a predetermined ratio, And may include a first slit formed at an interval.

Preferably, the second grinding wheel has a hollow second grinding portion provided at an end of the second spindle, and a second slit formed at a predetermined interval in the circumferential direction in the second grinding portion, . ≪ / RTI >

Further, in a preferred embodiment of the present invention, there is provided an apparatus for forming a mounting hole having a predetermined depth in a glass laminate in which an upper glass substrate and a lower glass substrate are laminated, the apparatus being mounted on a first spindle rotated by a first driving unit, A first polishing heel forming a first groove having a predetermined depth on the glass substrate; A second grinding wheel mounted on a second spindle rotated by the second driving unit and extending a certain depth from a bottom surface of the first groove to form a second groove adjacent to a boundary region between the upper glass substrate and the lower glass substrate, ; Wherein the upper glass substrate remaining in the second groove is separated and removed to form a mounting hole through which the lower glass substrate is exposed to the outside.

Preferably, the first grinding wheel includes a hollow first polishing portion provided at an end of the first wheel assembly assembled to the first spindle, and a second polishing portion provided at a first polishing portion mixed with the bonding material and the abrasive at a predetermined ratio in the circumferential direction And may include a first slit that is formed at regular intervals.

Preferably, the second polishing wheel has a hollow second polishing portion provided at an end portion of a second body to be assembled to the second spindle, and a second polishing portion having an abrasive on the outer surface thereof, And a second slit that is cut and formed.

Preferably, the hollow second polishing portion provided on the second polishing wheel includes first and second outer peripheral inclined surfaces that are inclined downwardly extended from an outer peripheral surface of the end portion, and a second outer peripheral inclined surface that is inclined downwardly from the inner peripheral surface of the end portion of the hollow second polishing portion, And an inner peripheral inclined surface which is in contact with the inclined surface.

Preferably, the hollow second polishing portion of the second polishing wheel may have a size larger than an inner diameter of the hollow first polishing portion of the first polishing wheel.

More preferably, the first angle formed by the first outer circumferential inclined surface and the inner circumferential inclined surface may be formed at an obtuse angle.

More preferably, the second angle formed by the second outer peripheral inclined surface and the inner peripheral inclined surface are formed at an acute angle.

The present invention as described above has the following effects.

(1) The first and second grooves are sequentially formed on the glass laminate in which the upper glass substrate and the lower glass substrate are stacked one on the other, and then the remaining core bodies in the second groove are separated and removed By forming the mounting groove, the load of the second grinding wheel which can not be regenerated can be reduced, and the service life can be extended.

(2) Secondary processing of the second groove by the second grinding wheel is performed after the heat generated during the first machining of the first groove by the first grinding wheel is cooled, thereby securing the cooling time by the process changeover time Thereby preventing the deformation of the glass material and increasing the product yield.

(3) Dimensional machining can be performed precisely during the secondary machining of the second groove by the second grinding wheel, and machining time can be shortened, and burrs generated at the entrance side of the mounting hole can be formed without any additional process Can be removed.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an overall schematic view showing a hole processing apparatus for a glass laminate according to a preferred embodiment of the present invention. Fig.
2 is a detailed view showing a hole processing apparatus for a glass laminate according to a preferred embodiment of the present invention.
3 is a process flow chart showing a method of processing holes in a glass laminate according to a preferred embodiment of the present invention.
4A and 4B are cross-sectional views showing first and second grinding wheels employed in a hole processing apparatus for a glass laminate according to a preferred embodiment of the present invention.
5 is a detailed view of the main part of a second grinding wheel employed in a hole processing apparatus for a glass laminate according to a preferred embodiment of the present invention.
6A and 6B are views showing the first and second polishing units of the first and second polishing wheels employed in the hole processing apparatus for a glass laminate according to a preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may obscure the subject matter of the present invention.

The same reference numerals are used for portions having similar functions and functions throughout the drawings.

In addition, in the entire specification, when a part is referred to as being 'connected' to another part, it may be referred to as 'indirectly connected' not only with 'directly connected' . Also, to include an element does not exclude other elements unless specifically stated otherwise, but may also include other elements.

As shown in Figs. 1 to 4, the method for manufacturing a hole in a glass laminate according to a preferred embodiment of the present invention includes steps of preparing a glass laminate 10, forming a first groove 111, A step of forming two grooves 211 and a step of separating and removing the core body to form a mounting hole 300 in the form of a blind hole capable of mounting a module component such as a camera module at an arbitrary position of the glass laminate will be.

1 and 2, a processing apparatus 1 for forming a mounting hole 300 in which a bottom surface is sealed in the glass laminate 10 includes a glass laminate 10 as an object to be processed, And a worktable 15 on which the worktable 15 is mounted.

The main body frame 20 is provided with a first motor 22 for horizontally reciprocating the reciprocating carriages 35a and 35b horizontally movably mounted on the horizontal slider 25 and the reciprocating carriages 35a and 35a May include first and second driving portions 31 and 32 for rotating the first and second spindles 33 and 34 and vertically moving the first and second grinding wheels 100 and 200, .

The first and second grinding wheels 100 and 200 are sequentially lifted up and down at the same position with respect to the glass laminate 10 mounted on the work table 15 so that the upper surface of the glass laminate 10 The mounting hole 300 can be formed to have a predetermined depth.

3A, the upper glass substrate 11 such as a TFT glass is used as an upper plate and the lower glass substrate 12 such as CF glass is used as a lower plate, Thereby restraining the structure on the workpiece.

At this time, a gap G having a predetermined size may be formed between the upper glass substrate 11 and the lower glass substrate 12.

The step of forming the first groove 111 may be performed by lowering the first polishing wheel 100 with respect to the upper glass substrate 11 in a state of being positioned directly above the glass laminate, A ring-shaped first groove 111 having a certain depth is formed on the upper surface of the upper glass substrate 11 by a first polishing part 102 provided at an end of the first polishing wheel 100 rotated at the same time, .

The first groove 111 is formed in a substantially circular ring shape on the upper glass substrate 11 in the same manner as the transverse plane of the first polishing part 102 made of a hollow cylindrical body, May be formed of inner and outer surfaces 111b and 111c perpendicular to the horizontal bottom surface 111a.

At this time, a substantially cylindrical core body 11a is formed on the inner side of the first groove 111, and a connection part having a predetermined thickness remains between the bottom surface 111a of the first groove and the core body 11a do.

4A and 6A, the first polishing wheel 100 is provided with a bonding material 102a and an abrasive material 102b at the end portion of the first wheel body 103, which is replaceably assembled at the end of the first spindle 33. [ The first polishing part 102 includes a first slit 101 formed at a predetermined interval in the circumferential direction, and a second slit 101 formed at a predetermined interval in the circumferential direction .

The first groove 111 is formed by abrading and removing a glass material by an abrasive 102b exposed on the entire surface of the first polishing part 102. In the first groove 111, The abrasive portion gradually wears and its formation length gradually becomes short, and the abrasive material 102b which is fixed to the bonding material 102a and externally exposed may be worn or damaged.

At this time, the abrasive 102b may be regenerated so as to be exposed by a regeneration process of grinding the surface of the first abrasive portion with a grinder.

The step of forming the second grooves 211 by using the second grinding wheel 200 after the first grooves 111 are formed may include forming the second grinding wheel 200 as shown in FIG. And then the second polishing wheel 200 adjacent to the first polishing wheel is positioned at the center of the first groove 111 by the horizontal movement of the reciprocating unit.

That is, the first polishing unit 202 provided at the end of the second polishing wheel 200, which is lowered with respect to the upper glass substrate 11 and simultaneously rotated in one direction, The second groove 212 is formed to extend from the bottom surface 111a of the first groove 111 by a predetermined depth to be adjacent to the boundary region between the upper glass substrate and the lower glass substrate.

The second groove 212 is formed in a substantially circular ring shape on the bottom surface of the first groove like the transverse plane of the second polishing portion 202 made of a hollow cylindrical body, 212 may be formed in a substantially V-shaped notch groove shape having an outer inclined surface 212a and an inner inclined surface 212b.

As a result, the substantially cylindrical core body 11a remaining inside the second groove 212 remains on the upper glass substrate until the second groove having the V-shaped notch is broken.

4b and 6b, the second polishing wheel 200 is provided with an abrasive material 202d on the outer surface of the end portion of the second wheel body 203, which is replaceably assembled to the end of the second spindle 34 The second polishing unit 202 may include a second slit 201 formed at a predetermined interval in the circumferential direction of the second polishing unit 202.

The second grooves 212 formed by the inner and outer inclined surfaces 212a and 212b are formed by abrading and removing the glass material by the abrasive material 202b fixed to the outer surface of the second polishing unit 202 will be.

5, the second polishing portion 202 includes first and second outer peripheral inclined surfaces 202a and 202b that are inclined downwardly from the outer peripheral surface of the end portion, and second and third outer peripheral inclined surfaces 202a and 202b that extend obliquely downward from the end inner peripheral surface, And an inner peripheral inclined surface 202c which is in contact with the inner peripheral surface 202b.

The first angle? 1 formed by the first outer circumferential surface 202a and the inner circumferential surface 202c is formed to be an obtuse angle relatively larger than 90 degrees and the second outer circumferential surface 202b and the inner circumferential surface The second angle? 2 at which the first and second electrodes 202c are mutually formed is preferably formed at an acute angle relatively smaller than 90 degrees.

The second outer peripheral inclined surface 202b and the inner peripheral inclined surface 202c of the second polishing portion corresponding to the bottom surface 111a of the first groove 111 form the inner and outer inclined surfaces 212a And a second groove 212 serving as a boundary line for separating the core body 11a.

In addition, an upper inclined surface 211b extending outward by the first outer peripheral inclined surface 202a is formed at the upper end of the vertical outer surface 111b of the first groove 111, It is possible to remove the burr generated in the second groove at the same time as the formation of the second groove and enlarge the entrance of the mounting hole 300 formed at the same time as the removal and removal of the core body, It is.

The inner diameter of the second polishing portion 202 is relatively larger than the inner diameter of the first polishing portion 102 so as not to contact the outer circumferential surface of the core body 11a, The inner circumferential surface of the second polishing portion 202 is not spaced apart from the outer circumferential surface of the core body 11a and is not brought into contact with each other when the second grooves 212 are formed. It is possible to prevent the pressing member 11a from being deformed and damaged.

Finally, as shown in FIG. 3C and FIG. 3D, the step of separating and removing the core body 11a may include a step of separating the core body 11a remaining inside the first groove formed by the first polishing unit And the second glass substrate is separated and removed by the second polishing unit with the second groove recessed at the bottom surface of the first groove as a boundary so that the mounting hole 300 having the predetermined depth forming the sealing surface is exposed to the outside, Lt; / RTI >

The step of separating and removing the core body may be selectively performed by an adsorption pad adsorbed on the upper surface of the core body after the second polishing wheel is lifted up or a bonding pad bonded to the upper surface of the core body.

At this time, in the operation of separating and removing the core body 11a from the upper glass substrate by the adsorption method or the bonding method, the second groove 212 made of the inner and outer inclined surfaces 212a and 212b is formed in a V shape, It is possible to maximize the concentrated load in the second groove at the time of transfer of the external force for separating and removing the core body 11a, to minimize the brake generating area, to control the processing depth, Can be minimized.

The inner peripheral surface of the mounting hole corresponding to the boundary region between the first outer peripheral inclined surface and the second outer peripheral inclined surface is provided with a step 211a formed without being polished by the first outer peripheral inclined surface.

Accordingly, the mounting hole 300 includes a slant surface 211b formed by the first outer peripheral inclined surface, a vertical outer surface 111b formed by the first polishing unit 102, a step 211a, And an outer inclined surface 212a formed by the second outer peripheral inclined surface of the second polishing portion 202. [

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. It will be apparent to those of ordinary skill in the art.

11: upper glass substrate
12: Lower glass substrate
10: Glass laminate
31 and 32:
33, 34: 1st and 2nd spindles
100: first grinding wheel
101: first slit
102: first polishing section
103: first wheel body
111: 1st home
200: second grinding wheel
201: second slit
202: second polishing section
202a and 202b: first and second outer peripheral inclined surfaces
202c: inner peripheral inclined surface
203: second wheel body
212: 2nd home

Claims (14)

Preparing a glass laminate in which an upper glass substrate and a lower glass substrate are laminated;
Forming a first groove having a predetermined depth on the upper glass substrate by a rotational force of a first grinding wheel moving up and down with respect to the upper glass substrate;
And a second groove adjacent to the boundary region between the upper glass substrate and the lower glass substrate is formed by a certain depth from the bottom surface of the first groove by the rotational force of the second polishing wheel which is raised and lowered with respect to the first groove step ;
Separating and removing a core body of the upper glass substrate remaining in the second groove to form a mounting hole through which the lower glass substrate is exposed; Wherein the glass laminate is a glass laminate. The method according to claim 1,
Wherein the forming of the first groove comprises forming a first groove having an inner side and an outer side perpendicular to the horizontal bottom surface by the hollow first polishing portion provided on the first grinding wheel Method of processing holes in a sieve. The method according to claim 1,
The forming of the second groove may include a first and a second outer circumferential sloping surface extending obliquely downward from the outer circumferential surface of the end portion of the hollow second polishing portion provided on the second polishing wheel, And a second notch-like groove formed by an outer inclined surface and an inner inclined surface is formed by an inner peripheral inclined surface extending in contact with the second outer peripheral inclined surface. The method of claim 3,
Wherein the step of forming the second groove comprises forming an upper inclined surface extending outwardly from the first outer peripheral inclined surface at the upper end of the vertical outer surface of the first groove. The method according to claim 1,
The forming of the second groove may include forming an inner diameter of a first polishing portion provided at an end of the first polishing wheel to be larger than an inner diameter of a second polishing portion provided at an end of the second polishing wheel, Wherein the inner circumferential surface of the second polishing portion and the outer circumferential surface of the core body are spaced apart from each other. The method according to claim 1,
The first grinding wheel includes a hollow first polishing portion provided at an end portion of the first wheel to be assembled to the first spindle, and a second polishing portion provided at a predetermined distance in the circumferential direction in the first polishing portion mixed with the bonding material and the abrasive at a predetermined ratio And a first slit that is formed in an incision. The method according to claim 1,
The second grinding wheel may include a second hollow grinding portion provided at an end of the second spindle and a second slit formed at a predetermined interval in the circumferential direction at a second grinding portion to which an abrasive is fixed, Wherein the glass laminate is a glass laminate. An apparatus for forming a mounting hole having a predetermined depth in a glass laminate in which an upper glass substrate and a lower glass substrate are laminated,
A first polishing heel mounted on a first spindle rotated by the first driving unit to form a first groove having a predetermined depth on the upper glass substrate;
A second grinding wheel mounted on a second spindle rotated by the second driving unit and extending a certain depth from a bottom surface of the first groove to form a second groove adjacent to a boundary region between the upper glass substrate and the lower glass substrate, ; / RTI >
Wherein the upper glass substrate remaining in the second groove is separated and removed to form a mounting hole through which the lower glass substrate is exposed to the outside. 9. The method of claim 8,
The first grinding wheel has a hollow first polishing part provided at an end of the first wheel assembly assembled to the first spindle and a first grinding part having a certain interval in the circumferential direction And a first slit which is cut and formed. 9. The method of claim 8,
The second polishing wheel has a hollow second polishing portion provided at an end portion of a second body to be assembled to the second spindle, and a second polishing portion having an abrasive on the outer surface, And a second slit formed in the glass laminate. 9. The method of claim 8,
Wherein the hollow second polishing portion provided on the second polishing wheel has a first and a second outer peripheral inclined surfaces that are inclined downwardly extended from an outer peripheral surface of the end portion and a second and a third peripheral inclined surfaces extending downwardly from the inner peripheral surface of the end portion of the hollow second polishing portion and contacting the second peripheral inclined surface And the inner circumferential inclined surface. 9. The method of claim 8,
Wherein the hollow second polishing portion provided on the second polishing wheel is provided with a size relatively larger than an inner diameter of the hollow first polishing portion provided on the first polishing wheel. 12. The method of claim 11,
Wherein the first angle formed by the first outer peripheral inclined surface and the inner peripheral inclined surface are formed at obtuse angles. 12. The method of claim 11,
The second angle formed by the second outer circumferential surface and the inner circumferential surface may be formed at an acute angle. Wherein the glass layered body has a hole formed therein.

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