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JP2007045642A - Glass cutting method and apparatus - Google Patents

Glass cutting method and apparatus Download PDF

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JP2007045642A
JP2007045642A JP2005229443A JP2005229443A JP2007045642A JP 2007045642 A JP2007045642 A JP 2007045642A JP 2005229443 A JP2005229443 A JP 2005229443A JP 2005229443 A JP2005229443 A JP 2005229443A JP 2007045642 A JP2007045642 A JP 2007045642A
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glass
laminated glass
cutting
laminated
vibration
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JP2007045642A5 (en
JP4987266B2 (en
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Hiroshi Iwamoto
洋 岩本
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates

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Abstract

【課題】 従来の貼合せガラス切断方法は、ガラスの面積が大きくなればなるほど切断装置が大型化し、製造コストが高くなる問題点があった。そこで本発明は、従来の問題点を解決して、大面積の貼合せガラスを簡単な方法および安価な装置で切断できるガラス切断方法およびその装置を提供することを課題とする。
【解決手段】 貼合せガラス１を固定する固定手段３と、貼合せガラス１の表面と裏面とに一対の切断線６を互いに対向させて形成する切断線形成手段２と、貼合せガラス１を振動させる振動手段４とを有するガラス切断装置を用いて、貼合せガラス１に切断線６を形成した後、振動手段４で貼合せガラス１を振動させることによって切断線６の直下部に垂直クラックを深く伸展させて貼合せガラス１を分断する。
【選択図】図１
PROBLEM TO BE SOLVED: A conventional laminated glass cutting method has a problem that the larger the glass area, the larger the cutting device and the higher the manufacturing cost. Then, this invention makes it a subject to solve the conventional trouble and to provide the glass cutting method which can cut | disconnect a large area laminated glass with a simple method and an inexpensive apparatus, and its apparatus.
SOLUTION: A fixing means 3 for fixing a laminated glass 1, a cutting line forming means 2 for forming a pair of cutting lines 6 on the front and back surfaces of the laminated glass 1 to face each other, and a laminated glass 1 After forming the cutting line 6 on the laminated glass 1 using a glass cutting device having the vibrating means 4 to vibrate, the vertical cracks are formed directly below the cutting line 6 by vibrating the laminated glass 1 with the vibrating means 4. Is stretched deeply to cut the laminated glass 1.
[Selection] Figure 1

Description

本発明は、２枚のガラス平板を対面させて貼り合わせた貼合せガラスを切断するガラス切断方法およびその装置に関するものである。   The present invention relates to a glass cutting method and apparatus for cutting a laminated glass that is bonded with two glass flat plates facing each other.

近年、薄型化・大画面化に適した表示装置として、プラズマディスプレイパネル・液晶ディスプレイパネル・無機ＥＬディスプレイパネル・有機ＥＬディスプレイパネル・電界放出ディスプレイパネル・発光ダイオードディスプレイパネルなどのフラットパネルディスプレイが注目され、生産量も年々増加の一途を辿っている。これらのディスプレイパネル（以下、パネルとも言う）は、電極・誘電体・リブ・発光体・カラーフィルタなどの表示素子部材を担持させた２枚の平板状ガラス基板を所望の間隙を設けて接合材で貼り合せた構成になっている。
ところで、パネルの製造工程で発生した不良品や、販売した使用済みのパネルは、従来、埋め立てなどによって廃棄処理されていた。しかし、埋め立て地の不足もさることながら、資源の有効活用・再生・再利用・省資源化など地球環境保全に対する世論の高まりもあって、パネルの再生・再利用が社会的な課題になってきている。
このような背景から、パネルの主要構成材料であるガラス基板を再利用する研究開発が活発になってきている。ガラス基板を再利用するには、ガラス基板上の表示素子部材を取り除くために、まず貼り合わされたガラス基板の貼り合わせ部を切断して、２枚のガラス基板に分離する必要がある。 In recent years, flat panel displays such as plasma display panels, liquid crystal display panels, inorganic EL display panels, organic EL display panels, field emission display panels, and light emitting diode display panels have attracted attention as display devices suitable for thinning and large screens. The production volume has been increasing year by year. These display panels (hereinafter also referred to as “panels”) are formed by joining two flat glass substrates carrying display element members such as electrodes, dielectrics, ribs, light emitters, and color filters with a desired gap therebetween. It is the composition which was pasted together.
By the way, defective products generated in the panel manufacturing process and used panels that have been sold are conventionally disposed of by landfill or the like. However, the reclamation and reuse of panels has become a social issue due to the growing public opinion on the conservation of the global environment, including the effective use, recycling, reuse and resource saving of resources, as well as the shortage of landfills. ing.
Against this background, research and development for reusing glass substrates, which are the main constituent materials of panels, has become active. In order to reuse the glass substrate, in order to remove the display element member on the glass substrate, it is necessary to first cut the bonded portion of the bonded glass substrate and separate it into two glass substrates.

従来、貼合せガラスを切断する方法としては、例えば特許文献１に開示されている方法が良く知られている。この方法は、図７〜図１０に示すように、貼合せガラスの表面にカッターホイールで切断線を形成した後、押圧手段で切断線部に衝撃力や曲げ応力を付与して切断する方法である。
まず、図７に示すように、貼合せガラスの第１ガラス基板１０１にカッターホイール１０３で所望の切断線（スクライブラインとも言う）１０５を罫書きする。つぎに、図８に示すように、貼合せガラスを反転させて、上方に向いた第２ガラス基板１０２の上方から押圧子１０４によって第１ガラス基板１０１の切断線１０５の直上部を押圧する。すると、図中の破線で示すように第１ガラス基板１０１に曲げ応力が作用し、切断線１０５の垂直方向に垂直クラックが生成して第１ガラス基板１０１が分断される。つぎに、図９に示すように、第１ガラス基板１０１の切断線１０５と対向する位置にカッターホイール１０３で切断線１０７を第２ガラス基板１０２に形成する。つぎに、図１０に示すように、貼合せガラス基板を反転させて上方に向いた第１ガラス基板１０１の上方から押圧子１０４によって第２ガラス基板１０２の切断線１０７の直上部を押圧する。すると、第２ガラス基板１０２に曲げ応力が作用し、切断線１０７の垂直方向に垂直クラックが生成して第２ガラス基板１０２が分断される。
特開平６−４８７５５号公報 Conventionally, as a method for cutting a laminated glass, for example, a method disclosed in Patent Document 1 is well known. In this method, as shown in FIGS. 7 to 10, a cutting line is formed on the surface of the laminated glass with a cutter wheel, and then the cutting line part is applied with an impact force or bending stress by a pressing means and then cut. is there.
First, as shown in FIG. 7, a desired cutting line (also referred to as a scribe line) 105 is marked on the first glass substrate 101 of the laminated glass with the cutter wheel 103. Next, as shown in FIG. 8, the laminated glass is reversed, and the upper part of the cutting line 105 of the first glass substrate 101 is pressed by the pressing element 104 from above the second glass substrate 102 facing upward. As a result, bending stress acts on the first glass substrate 101 as indicated by the broken line in the figure, and a vertical crack is generated in the direction perpendicular to the cutting line 105 to divide the first glass substrate 101. Next, as shown in FIG. 9, a cutting line 107 is formed on the second glass substrate 102 by a cutter wheel 103 at a position facing the cutting line 105 of the first glass substrate 101. Next, as shown in FIG. 10, the laminated glass substrate is inverted and the upper portion of the first glass substrate 101 facing upward is pressed by the pressing element 104 directly above the cutting line 107 of the second glass substrate 102. Then, a bending stress acts on the second glass substrate 102, a vertical crack is generated in the direction perpendicular to the cutting line 107, and the second glass substrate 102 is divided.
Japanese Patent Laid-Open No. 6-48755

しかしながら、従来のガラス切断方法は貼合せガラス基板を２回反転させる工程が必要である。したがって、ガラス基板反転装置の構成が複雑になるため、装置コストが高くなり、しかも装置が大型化する問題点があった。また、切断工数も多くなるため製造コストが高くなる問題点があった。さらに、ガラス基板を押圧して分断する際に、他方のガラス基板を介して押圧するため大きな押圧力が必要になる。したがって、大きな押圧力を発生する高価な押圧装置が必要になるため、装置コストが高くなる問題点があった。
以上に説明した通り、従来の貼合せガラス切断方法は、ガラスの面積が大きくなればなるほど切断装置が大型化し、製造コストが高くなる問題点があった。そこで本発明は、大面積の貼合せガラスを簡単な方法および安価な装置で切断できるガラス切断方法およびその装置を提供することを目的とする。 However, the conventional glass cutting method requires a step of inverting the laminated glass substrate twice. Therefore, since the configuration of the glass substrate reversing apparatus is complicated, there is a problem that the apparatus cost is increased and the apparatus is increased in size. Moreover, since the number of cutting steps increases, there is a problem that the manufacturing cost increases. Furthermore, when pressing and dividing the glass substrate, a large pressing force is required to press through the other glass substrate. Therefore, since an expensive pressing device that generates a large pressing force is required, there is a problem that the device cost increases.
As described above, the conventional laminated glass cutting method has a problem that the larger the glass area, the larger the cutting device and the higher the manufacturing cost. Therefore, an object of the present invention is to provide a glass cutting method and apparatus capable of cutting a large area laminated glass with a simple method and an inexpensive apparatus.

本発明によるガラス切断方法は、２枚のガラス平板を対面させて貼り合わせた貼合せガラスの表面と裏面とに一対の切断線を互いに対向させて形成する切断線形成工程と、貼合せガラスを振動させて切断線の直下に垂直クラックを生成させる振動工程とを有することを特徴とする。このような構成にすることによって、従来に比べて工数が大幅に減少するため、製造コストの低減が図れる。また、垂直クラックが深く生成されるため、分断荷重をかけなくても切断することが可能になる。さらに、切断時に発生するガラス粉あるいはガラス小片が細かくなるため、ガラス粉あるいはガラス小片によるガラス表面への損傷を防止することができる。したがって、ディスプレイパネルを解体して得たガラス基板の再利用が図れる。
また、本発明によるガラス切断方法は、振動工程において貼合せガラスを貼合せガラスの厚み方向に振動させることを特徴とする。このような構成にすることによって、短時間で貼合せガラスを分断することができる。
本発明によるガラス切断装置は、２枚のガラス平板を対面させて貼り合わせた貼合せガラスを固定する固定手段と、貼合せガラスの表面と裏面とに一対の切断線を互いに対向させて形成する切断線形成手段と、貼合せガラスを振動させる振動手段とを有することを特徴とする。このような構成にすることによって、大面積の貼合せガラスを小型かつ安価な装置で切断することができる。 A glass cutting method according to the present invention includes a cutting line forming step in which a pair of cutting lines are formed opposite to each other on a front surface and a back surface of a laminated glass which are bonded together by facing two glass flat plates, and a laminated glass. And a vibration step of generating a vertical crack directly below the cutting line. By adopting such a configuration, man-hours are greatly reduced as compared with the prior art, so that the manufacturing cost can be reduced. Further, since vertical cracks are generated deeply, it is possible to cut without applying a dividing load. Furthermore, since the glass powder or glass piece generated at the time of cutting becomes fine, damage to the glass surface by the glass powder or glass piece can be prevented. Therefore, the glass substrate obtained by disassembling the display panel can be reused.
The glass cutting method according to the present invention is characterized in that the laminated glass is vibrated in the thickness direction of the laminated glass in the vibration step. By setting it as such a structure, a laminated glass can be parted in a short time.
The glass cutting device according to the present invention forms a pair of cutting lines on the front and back surfaces of the laminated glass so as to oppose each other, and a fixing means for fixing the laminated glass bonded by facing two glass flat plates. It has a cutting line forming means and a vibrating means for vibrating the laminated glass. With such a configuration, a large-area laminated glass can be cut with a small and inexpensive apparatus.

また、本発明によるガラス切断装置は、振動手段の振動伝達部が貼合せガラスに当接されていることを特徴とする。このような構成にすることによって、小さな振動エネルギで効率良く大面積の貼合せガラスを切断することができる。   Moreover, the glass cutting device according to the present invention is characterized in that the vibration transmitting portion of the vibration means is in contact with the laminated glass. With such a configuration, a laminated glass having a large area can be efficiently cut with small vibration energy.

本発明のガラス切断方法およびガラス切断装置によれば、大面積の貼合せガラスを簡単な方法および安価な装置で切断できる効果が得られる。   According to the glass cutting method and the glass cutting device of the present invention, an effect of cutting a large area laminated glass with a simple method and an inexpensive device can be obtained.

以下、本発明の実施形態について図面を参照しながら説明する。
（実施の形態）
図１は、本発明によるガラス切断装置の一構成例の主要部を示した断面概略図である。図２から図５は、本発明によるガラス切断方法について、図１に示したガラス切断装置を用いた場合を例にして説明した図である。
図１において、１は対面する２枚のガラス平板を貼り合せた貼合せガラス、２は貼合せガラス１の表面と裏面とに切断線を同時に罫書きする切断線形成手段であって互いに対向させて設置した一対のホイールカッター、３は貼合せガラス１を固定する平台などの固定手段、４は貼合せガラス１を振動させる振動手段、５は切断線形成手段２を貼合せガラス１に押圧する押圧手段、９は２枚のガラス平板を接合させるフリットガラス・エポキシ樹脂接着剤などの接合材である。
ガラス材料としては、青板ソーダガラス・白板ガラス・石英ガラス・無アルカリの耐熱性ガラス・高歪点ガラスなど一般に良く知られているガラス材料であればいずれでも用い得る。貼合せガラス１の形態としては、図１に示したように、間隙を設けて対面するガラス平板を接合材９で接合した貼合せガラス（以下、「中空貼合せガラス」と言う）、あるいは全面を接合材で接合した空隙のない貼合せガラスのいずれでも用い得る。中でも、ディスプレイパネルのように数μｍ〜数１００μｍの間隙を設けた中空貼合せガラスは、切断の際に発生するガラス粉あるいはガラス小片が数μｍ以下になるため、ガラス粉あるいはガラス小片によるガラス表面への損傷が防止できる点で好ましい。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Embodiment)
FIG. 1 is a schematic cross-sectional view showing the main part of one configuration example of a glass cutting device according to the present invention. 2 to 5 are diagrams illustrating the glass cutting method according to the present invention, taking as an example the case where the glass cutting apparatus shown in FIG. 1 is used.
In FIG. 1, 1 is a laminated glass obtained by laminating two glass flat plates facing each other, 2 is a cutting line forming means for simultaneously scoring cutting lines on the front and back surfaces of the laminated glass 1 and facing each other. A pair of wheel cutters, 3 is a fixing means such as a flat base for fixing the laminated glass 1, 4 is a vibrating means for vibrating the laminated glass 1, 5 is pressing the cutting line forming means 2 against the laminated glass 1. The pressing means 9 is a bonding material such as frit glass / epoxy resin adhesive for bonding two glass flat plates.
As the glass material, any generally known glass material such as blue plate soda glass, white plate glass, quartz glass, non-alkali heat-resistant glass, and high strain point glass can be used. As a form of the laminated glass 1, as shown in FIG. 1, a laminated glass (hereinafter referred to as “hollow laminated glass”) in which a glass flat plate facing each other with a gap is joined with a joining material 9, or the entire surface. Any of the laminated glass having no voids bonded with a bonding material can be used. Among them, hollow laminated glass having a gap of several μm to several hundreds of μm like a display panel has a glass powder or glass piece generated at the time of cutting of several μm or less. It is preferable in that damage to the can be prevented.

カッターホイール２としては、一般に良く知られている超硬合金ホイールやダイヤモンドホイールなど一般に良く知られているものであればいずれでも適用できる。中でも超硬合金ホイールは、切断線を引いたときに均一な垂直クラックをガラスに生成させることができる点で好ましい。
固定手段３は、切断時に貼合せガラス１が動かないように固定するものであって、例えば貼合せガラス１の自重だけで固定できる場合は図１に示した平台でも良いし、もし自重だけで固定できない場合は貼合せガラス１を押さえ板あるいは万力などで挟持して固定する。尚、貼合せガラス１を挟持して固定する場合は、貼合せガラス１の平面を垂直にして固定してもよいことは勿論である。
振動手段４としては、電動式バイブレータ・空気式バイブレータ・圧電式バイブレータなどが適用できる。振動手段４の振幅・振動周波数・振動の強さ・振動時間など貼合せガラス１を振動させる振動条件は、貼合せガラス１の形態および切断線の形態などに応じて異なる。したがって、振動条件が変えられるように振動制御手段が振動手段４に具備されている。つぎに、貼合せガラス１として中空貼合せガラスを用いた場合の切断方法の一例について説明する。 As the cutter wheel 2, any generally well-known cemented carbide wheel, diamond wheel or the like can be applied. Among these, a cemented carbide wheel is preferable in that it can generate uniform vertical cracks in glass when a cutting line is drawn.
The fixing means 3 is for fixing the laminated glass 1 so that it does not move at the time of cutting. For example, when it can be fixed only by its own weight, the flat table shown in FIG. 1 may be used. If it cannot be fixed, the laminated glass 1 is clamped with a pressing plate or a vise and fixed. In addition, when pinching and fixing the laminated glass 1, it is needless to say that the plane of the laminated glass 1 may be fixed vertically.
As the vibration means 4, an electric vibrator, a pneumatic vibrator, a piezoelectric vibrator, or the like can be applied. The vibration conditions for vibrating the laminated glass 1 such as the amplitude, vibration frequency, vibration strength, and vibration time of the vibration means 4 vary depending on the form of the laminated glass 1 and the form of the cutting line. Therefore, the vibration control means is provided in the vibration means 4 so that the vibration conditions can be changed. Below, an example of the cutting method at the time of using a hollow laminated glass as the laminated glass 1 is demonstrated.

図２に示すように、貼合せガラス１を平台３に設置し、押圧手段５によって荷重をかけながら一対のカッターホイール２を貼合せガラス１に圧接させる。尚、本図は、接合材９側の端部Ｅから距離ｌ隔てた位置に切断線６を紙面に対して鉛直方向に罫書き、接合材９部側の貼合せガラス１を切り落とす例を示している。
つぎに、図３に示すように、荷重を付与したカッターホイール２を貼合せガラス１に圧接して転動させ、所望の切断線６を罫書きする。すると、切断線６の直下部に垂直方向すなわちガラスの厚み方向のクラック（垂直クラックと言う）が生成する。垂直クラックの深さは、カッターホイール２の荷重に比例して増加する。したがって、垂直クラックが深かれば深いほど、貼合せガラス１を分断させる分断応力、すなわち貼合せガラス１を振動させる振動手段４の振動力を低減させることができる。しかし、荷重が大き過ぎると、水平方向にもクラック（水平クラックと言う）が生成する。したがって、垂直クラックが深くかつ水平クラックが発生しない荷重条件に設定することが好ましい。発明者等の実験によると、貼合せガラス１の形態およびカッターホイール２の形態などによって最適条件は異なるが、垂直クラックの深さをガラス平板の厚さの１０〜１５％程度にすると、水平クラックが発生せず、切断口の良好な切断ができた。 As shown in FIG. 2, the laminated glass 1 is placed on the flat table 3, and a pair of cutter wheels 2 are pressed against the laminated glass 1 while applying a load by the pressing means 5. In addition, this figure shows the example which cuts off the cutting glass 6 in the perpendicular direction with respect to the paper surface at the position l apart from the end E on the bonding material 9 side, and cuts the laminated glass 1 on the bonding material 9 side. ing.
Next, as shown in FIG. 3, the cutter wheel 2 to which a load is applied is pressed against the laminated glass 1 to roll, and a desired cutting line 6 is marked. Then, a crack in the vertical direction, that is, the thickness direction of the glass (called a vertical crack) is generated immediately below the cutting line 6. The depth of the vertical crack increases in proportion to the load on the cutter wheel 2. Therefore, the deeper the vertical crack, the lower the dividing stress for dividing the laminated glass 1, that is, the vibration force of the vibration means 4 for vibrating the laminated glass 1. However, if the load is too large, cracks (called horizontal cracks) are also generated in the horizontal direction. Therefore, it is preferable to set the load conditions so that the vertical crack is deep and the horizontal crack does not occur. According to the experiments by the inventors, the optimum conditions differ depending on the form of the laminated glass 1 and the form of the cutter wheel 2, but when the depth of the vertical crack is about 10 to 15% of the thickness of the glass flat plate, the horizontal crack No cutting occurred and the cutting opening was cut well.

つぎに、図４に示すように、カッターホイール２を上昇させ、振動手段４の振動伝達部（図示していない）を切断線６に対して端部Ｅとは反対側の貼合せガラス１表面に当接させて、貼合せガラス１をガラス平面に対して垂直方向（図中の矢印Ａで示した方向）、すなわち貼合せガラス１の厚み方向に振動させる。すると、その振動力が端部Ｅ側に伝達され、端部Ｅ側も同様に垂直方向（図中の矢印Ｂで示した方向）に振動し、その振動応力によって垂直クラック７がガラス平板の裏面まで伸展して貼合せガラス１が分断される。このとき、垂直クラック７がガラス平板の裏面まで伸展する前に振動手段４を停止させ、図５に示すように押圧子８で端部Ｅ側を押圧して分断してもよい。垂直クラック７の深さをガラス平板の厚さの８０％以上にすると、押圧子８に付与する荷重を小さくできる点で好ましい。この方法は、特にガラス平板の厚さが厚い場合、具体的には２ｍｍ以上の場合に有効である。
尚、図１では、振動手段４を貼合せガラス１に当接して、貼合せガラス１を振動手段４で直接振動させたが、図６に示すように振動手段４を平台３に当接して、平台３を介して貼合せガラス１を間接的に振動させても同様の効果が得られる。この方法は、特にガラス平板の厚さが薄い場合、具体的には１ｍｍ以下の場合に有効である。例えば、板厚の厚い貼合せガラスに適した振動手段４を用いて板厚の薄い貼合せガラスに直接当接させると、振動手段４の振動力が強過ぎて水平クラックが入る不都合が生じる。このような場合に、平台３を介して薄い貼合せガラスを間接的に振動させると、振動手段４を交換せずに振動力を弱めて水平クラックの発生を防止することができる。したがって、振動手段４の位置を図１および図６に示した位置に移動可能にすると、振動手段４を変更せずに板厚の異なる各種の貼合せガラスを同一の装置で切断することができる効果が得られる。 Next, as shown in FIG. 4, the cutter wheel 2 is raised, and the surface of the laminated glass 1 on the side opposite to the end E with respect to the cutting line 6 is set to a vibration transmitting portion (not shown) of the vibration means 4. The laminated glass 1 is vibrated in the direction perpendicular to the glass plane (the direction indicated by the arrow A in the figure), that is, in the thickness direction of the laminated glass 1. Then, the vibration force is transmitted to the end portion E side, and the end portion E side similarly vibrates in the vertical direction (the direction indicated by the arrow B in the figure), and the vertical crack 7 is formed on the back surface of the glass plate by the vibration stress. And the laminated glass 1 is divided. At this time, the vibration means 4 may be stopped before the vertical crack 7 extends to the back surface of the glass flat plate, and the end E side may be pressed and divided by the pressing element 8 as shown in FIG. When the depth of the vertical crack 7 is 80% or more of the thickness of the glass flat plate, it is preferable in that the load applied to the presser 8 can be reduced. This method is particularly effective when the thickness of the glass flat plate is large, specifically when the thickness is 2 mm or more.
In FIG. 1, the vibrating means 4 is brought into contact with the laminated glass 1 and the laminated glass 1 is directly vibrated by the vibrating means 4, but the vibrating means 4 is brought into contact with the flat table 3 as shown in FIG. The same effect can be obtained by indirectly vibrating the laminated glass 1 through the flat table 3. This method is particularly effective when the thickness of the glass plate is thin, specifically when it is 1 mm or less. For example, if the vibration means 4 suitable for the laminated glass having a large thickness is used to directly contact the laminated glass having a small thickness, the vibration force of the vibrating means 4 is too strong and a problem of horizontal cracking occurs. In such a case, when the thin laminated glass is indirectly vibrated via the flat table 3, the vibration force can be weakened without causing the vibration means 4 to be exchanged, thereby preventing the occurrence of horizontal cracks. Therefore, if the position of the vibration means 4 can be moved to the position shown in FIG. 1 and FIG. 6, various types of laminated glass having different plate thicknesses can be cut with the same apparatus without changing the vibration means 4. An effect is obtained.

（具体的実施例）
下記仕様のプラズマディスプレイのパネルを図１に示したガラス切断装置で切断した。
○パネルの寸法：大きさ４２インチ（縦：５７０ｍｍ、横：９８０ｍｍ）、厚さ５．７５ｍｍ
○パネルの構成：２枚のガラス基板（板厚：２．８ｍｍ）の周囲をフリットガラス（接合幅：６〜７ｍｍ）で貼り合せたもの。フリットガラスはガラス基板の周端部から１０〜１５ｍｍの位置に形成されている。また、ガラス基板間の間隙は約０．１５ｍｍである。
○ガラス基板の材料：高歪点ガラス
このパネルを平台３に載せ、超硬合金ホイールからなるカッターホイール２を用いて、下記条件で切断線６をパネルの両面に形成した。
○カッターホイール角度：１２０〜１６５度
○カッターホイールへの荷重：５〜１０ｋｇ
○切断線６の罫書き位置：ガラス基板の端部Ｅから２０〜３５ｍｍ
その結果、切断線６の直下部に深さ０．３〜０．４ｍｍの垂直クラックが生成された。尚、水平クラックの生成は認められなかった。 (Specific examples)
A plasma display panel having the following specifications was cut with the glass cutting apparatus shown in FIG.
○ Panel dimensions: 42 inches in size (length: 570 mm, width: 980 mm), thickness 5.75 mm
O Panel configuration: Two glass substrates (plate thickness: 2.8 mm) are bonded together with frit glass (bonding width: 6 to 7 mm). The frit glass is formed at a position of 10 to 15 mm from the peripheral edge of the glass substrate. The gap between the glass substrates is about 0.15 mm.
Material of glass substrate: High strain point glass This panel was placed on a flat table 3, and cutting lines 6 were formed on both sides of the panel under the following conditions using a cutter wheel 2 made of a cemented carbide wheel.
○ Cutter wheel angle: 120 to 165 degrees ○ Load on the cutter wheel: 5 to 10 kg
○ Cutting position of cutting line 6: 20 to 35 mm from edge E of glass substrate
As a result, a vertical crack having a depth of 0.3 to 0.4 mm was generated immediately below the cutting line 6. In addition, the generation | occurrence | production of the horizontal crack was not recognized.

つぎに、電動式バイブレータの振動伝達部を、切断線６から端部Ｅとは反対側へ１０〜２０ｍｍ離れた位置にパネルの縦方向へ引いた直線と、パネルの横方向の中心線との交点に当接して、電動式バイブレータの振動数を１０〜１０００Ｈｚにしてパネルを１〜５秒間振動させた。その結果，垂直クラック７が各ガラス基板の裏面まで伸展してパネルが分断された。このとき発生したガラス粉あるいはガラス小片の大きさを顕微鏡で測定したところ数μｍ以下であった。
パネルの残りの３辺を同様の方法で分断して、互いに分離させた２枚のガラス基板を得た。分離したガラス基板を研磨剤で研磨して、基板上の表示素子部材を除去したところ、ガラス切断時に発生したガラス粉あるいはガラス小片による傷のない良好なガラス板を得ることができた。また、このガラス板をパネルに再利用したところ、ガラス板に起因した不良は確認できなかった。 Next, the vibration transmission part of the electric vibrator is drawn by a straight line drawn in the vertical direction of the panel at a position 10 to 20 mm away from the end line E from the cutting line 6, and a horizontal center line of the panel In contact with the intersection, the vibration frequency of the electric vibrator was set to 10 to 1000 Hz, and the panel was vibrated for 1 to 5 seconds. As a result, the vertical crack 7 extended to the back surface of each glass substrate, and the panel was divided. When the size of the glass powder or glass piece generated at this time was measured with a microscope, it was several μm or less.
The remaining three sides of the panel were divided by the same method to obtain two glass substrates separated from each other. When the separated glass substrate was polished with an abrasive and the display element member on the substrate was removed, a good glass plate free from scratches caused by glass powder or glass pieces generated during glass cutting could be obtained. Moreover, when this glass plate was reused for a panel, the defect resulting from a glass plate was not able to be confirmed.

本発明によるガラス切断方法およびその装置は、ディスプレイパネルなどの中空貼合せガラスを切断した際に発生するガラス粉あるいはガラス小片でガラス表面を傷つけることがないため、中空貼合せガラスを再利用する分野に有効である。   The glass cutting method and apparatus according to the present invention do not damage the glass surface with glass powder or glass fragments generated when cutting a hollow laminated glass such as a display panel. It is effective for.

本発明によるガラス切断装置の一構成例を示した断面概略図Schematic cross-sectional view showing one configuration example of a glass cutting device according to the present invention 本発明によるガラス切断方法の一例を示した概略図Schematic showing an example of a glass cutting method according to the present invention 本発明によるガラス切断方法の一例を示した概略図Schematic showing an example of a glass cutting method according to the present invention 本発明によるガラス切断方法の一例を示した概略図Schematic showing an example of a glass cutting method according to the present invention 本発明によるガラス切断方法の一例を示した概略図Schematic showing an example of a glass cutting method according to the present invention 本発明によるガラス切断装置の他の構成例を示した断面概略図Schematic cross section showing another configuration example of the glass cutting device according to the present invention. 従来のガラス切断方法を示した図The figure which showed the conventional glass cutting method 従来のガラス切断方法を示した図The figure which showed the conventional glass cutting method 従来のガラス切断方法を示した図The figure which showed the conventional glass cutting method 従来のガラス切断方法を示した図The figure which showed the conventional glass cutting method

符号の説明Explanation of symbols

１ 貼合せガラス基板
２ カッターホイール
３ 平台
４ 振動手段
５ 押圧手段
６ 切断線
７ 垂直クラック
８ 押圧子
９ 接合料


DESCRIPTION OF SYMBOLS 1 Bonded glass substrate 2 Cutter wheel 3 Flat stand 4 Vibrating means 5 Pressing means 6 Cutting line 7 Vertical crack 8 Presser 9 Bonding material


Claims (9)

２枚のガラス平板を対面させて貼り合わせた貼合せガラスを切断するガラス切断方法において、
前記貼合せガラスの表面と裏面とに、一対の切断線を互いに対向させて形成する切断線形成工程と、
前記貼合せガラスを振動させて、前記切断線の直下に垂直クラックを生成させる振動工程と、
を有することを特徴とするガラス切断方法。 In the glass cutting method of cutting the laminated glass that is bonded by facing two glass flat plates,
A cutting line forming step of forming a pair of cutting lines facing each other on the front and back surfaces of the laminated glass,
Vibrating the laminated glass to generate a vertical crack directly below the cutting line; and
The glass cutting method characterized by having. 前記振動工程において、前記貼合せガラスを前記貼合せガラスの厚み方向に振動させることを特徴とする請求項１に記載のガラス切断方法。   The glass cutting method according to claim 1, wherein in the vibration step, the laminated glass is vibrated in a thickness direction of the laminated glass. 前記貼合せガラスが、前記２枚のガラス平板の間に間隙を有する中空貼合せガラスであることを特徴とする請求項１もしくは２に記載のガラス切断方法。   The glass cutting method according to claim 1 or 2, wherein the laminated glass is a hollow laminated glass having a gap between the two glass flat plates. 前記貼合せガラスがディスプレイパネルであることを特徴とする請求項３に記載のガラス切断方法。   The glass cutting method according to claim 3, wherein the laminated glass is a display panel. ２枚のガラス平板を対面させて貼り合わせた貼合せガラスを切断するガラス切断装置において、
前記貼合せガラスを固定する固定手段と、
前記貼合せガラスの表面と裏面とに、一対の切断線を互いに対向させて形成する切断線形成手段と、
前記貼合せガラスを振動させる振動手段と、
を有することを特徴とするガラス切断装置。 In a glass cutting device that cuts a laminated glass that is bonded by facing two glass flat plates,
Fixing means for fixing the laminated glass;
Cutting line forming means for forming a pair of cutting lines facing each other on the front and back surfaces of the laminated glass;
Vibration means for vibrating the laminated glass;
The glass cutting device characterized by having. 前記振動手段により、前記貼合せガラスを前記貼合せガラスの厚み方向に振動させることを特徴とする請求項５に記載のガラス切断装置。   The glass cutting apparatus according to claim 5, wherein the vibration glass vibrates the laminated glass in a thickness direction of the laminated glass. 前記振動手段の振動伝達部が前記貼合せガラスに当接されていることを特徴とする請求項６に記載のガラス切断装置。   The glass cutting device according to claim 6, wherein a vibration transmission portion of the vibration means is in contact with the laminated glass. 前記貼合せガラスが、前記２枚のガラス平板の間に間隙を有する中空貼合せガラスであることを特徴とする請求項５から７のいずれかに記載のガラス切断装置。   The glass cutting apparatus according to any one of claims 5 to 7, wherein the laminated glass is a hollow laminated glass having a gap between the two glass flat plates. 前記貼合せガラスがディスプレイパネルであることを特徴とする請求項８に記載のガラス切断装置。

The glass cutting apparatus according to claim 8, wherein the laminated glass is a display panel.

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JP2007297244A (en) * 2006-04-28 2007-11-15 Bando Kiko Co Ltd Glass plate cutting method and glass plate cutting machine
EP2138469A1 (en) * 2008-06-25 2009-12-30 BOTTERO S.p.A. Sheet glass break method and machine
JP2011231011A (en) * 2011-08-12 2011-11-17 Bando Kiko Co Ltd Method for cutting glass plate and glass plate cutting machine
CN103118998A (en) * 2010-11-19 2013-05-22 日本电气硝子株式会社 Method for producing glass film
WO2013078632A1 (en) * 2011-11-28 2013-06-06 深圳市华星光电技术有限公司 Cutting apparatus and cutting method for liquid crystal panel
WO2013127209A1 (en) * 2012-02-29 2013-09-06 京东方科技集团股份有限公司 Sliver separation device and method
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JP2007297244A (en) * 2006-04-28 2007-11-15 Bando Kiko Co Ltd Glass plate cutting method and glass plate cutting machine
EP2138469A1 (en) * 2008-06-25 2009-12-30 BOTTERO S.p.A. Sheet glass break method and machine
CN103118998A (en) * 2010-11-19 2013-05-22 日本电气硝子株式会社 Method for producing glass film
EP2570394A4 (en) * 2010-11-19 2013-12-04 Nippon Electric Glass Co Method for producing glass film
CN103118998B (en) * 2010-11-19 2015-05-20 日本电气硝子株式会社 Method for producing glass film
US9399595B2 (en) 2010-11-19 2016-07-26 Nippon Electric Glass Co., Ltd. Manufacturing method for a glass film
JP2011231011A (en) * 2011-08-12 2011-11-17 Bando Kiko Co Ltd Method for cutting glass plate and glass plate cutting machine
WO2013078632A1 (en) * 2011-11-28 2013-06-06 深圳市华星光电技术有限公司 Cutting apparatus and cutting method for liquid crystal panel
US9067327B2 (en) 2011-11-30 2015-06-30 Shenzhen China Star Optoelectronics Technology Co., Ltd. Cutting device and cutting method of a liquid crystal panel
WO2013127209A1 (en) * 2012-02-29 2013-09-06 京东方科技集团股份有限公司 Sliver separation device and method
US9195082B2 (en) 2012-02-29 2015-11-24 Boe Technology Group Co., Ltd. Break separation apparatus and break separation method

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