JP2006240948A - Method of manufacturing glass plate product by cutting out - Google Patents

Method of manufacturing glass plate product by cutting out Download PDF

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JP2006240948A
JP2006240948A JP2005061760A JP2005061760A JP2006240948A JP 2006240948 A JP2006240948 A JP 2006240948A JP 2005061760 A JP2005061760 A JP 2005061760A JP 2005061760 A JP2005061760 A JP 2005061760A JP 2006240948 A JP2006240948 A JP 2006240948A
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glass plate
line
glass
contour line
lead
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Yoichi Tajima
洋一 田島
Kazuya Fujino
一也 藤野
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Nippon Sheet Glass Co Ltd
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Nippon Sheet Glass Co Ltd
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Priority to JP2005061760A priority Critical patent/JP2006240948A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a glass disk by forming an outline on one surface of a glass plate and cutting out along the outline by causing heat distortion in which a problem that the chipping or the damage on the outline part caused by the distortion or the warpage of the glass plate occurs when the glass disk is separated from the residual glass plate is solved. <P>SOLUTION: The method is carried out by forming the outline comprising a closed curved line on one surface of the glass plate by cutting, forming a plurality of leading lines for connecting the edge of the glass plate peripheral part outside to the outline to the outside vicinity of the outline by cutting and heating the glass plate peripheral part to extend the leading line to reach the outline from the outside vicinity of the outline by heat distortion. In the heating of the glass plate, the glass plate is horizontally supported and the glass disk is separated from the glass plate by moving the glass plate peripheral part outward in the nearly horizontal direction after the leading lines reach the outline. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、ガラス板材から所望の輪郭を有するガラス板製品を切り抜きにより製造する方法に関する。 The present invention relates to a method for producing a glass sheet product having a desired contour from a glass sheet material by cutting.

ガラス板材から所望の輪郭を有するガラス板を切り抜いて、板状のガラス製品を製造する方法として、ガラス板材の表面に輪郭線およびこの輪郭線からガラス板材の周端に至る複数の引き出し線を刻みつけ、この輪郭線に沿ってガラス板材を折り割りする方法が知られている。 As a method of manufacturing a plate-shaped glass product by cutting out a glass plate having a desired contour from a glass plate material, a contour line and a plurality of lead lines extending from the contour line to the peripheral edge of the glass plate material are engraved on the surface of the glass plate material. A method of folding a glass plate material along this contour line is known.

たとえば特許文献1には、切り抜くガラス板の外周形状を決める輪郭線とガラス板材の周端と輪郭線を結ぶ切断線をガラス板に刻設し、輪郭線の内側のガラス板材部分を略水平に支持した状態で、輪郭線および切断線に熱風を吹き付けることにより熱応力を発生させ、輪郭線の外側のガラス端材部分の重量および熱風の風圧を輪郭線および切断線に作用させつつ、ガラス端材部分を下方に脱落させて分離する方法が記載されている。 For example, in Patent Document 1, a contour line that determines the outer peripheral shape of a glass plate to be cut out, and a cutting line that connects the peripheral edge of the glass plate material and the contour line are engraved on the glass plate, and the glass plate material portion inside the contour line is substantially horizontal In the supported state, thermal stress is generated by blowing hot air to the contour line and the cutting line, and the glass edge material weight and the wind pressure of the hot air are applied to the contour line and the cutting line while acting on the contour line and the cutting line. A method is described in which the material portion is dropped down and separated.

特開2004−217492JP 2004-217492 A

非特許文献1には、ガラス板の表面に切り抜くガラス板製品の外周となる裁断線と裁断線からガラス板の端部に至る引出線をつけ、裁断線の外側部分のガラス板を加熱してガラス板を切り抜く方法とその方法を実施する板ガラス整形装置が記載されている。 In Non-Patent Document 1, a cutting line that becomes the outer periphery of the glass plate product cut out on the surface of the glass plate and a leader line extending from the cutting line to the end of the glass plate are attached, and the glass plate in the outer portion of the cutting line is heated. A method for cutting out a glass plate and a plate glass shaping device for carrying out the method are described.

実開平2−1024392-102439

非特許文献1に開示されている板ガラス整形装置は、板ガラスの裁断線の内側部分を真空吸引手段により水平に支持する支持固定手段と、裁断線1の外側部分に近接または当接して裁断線外側部分の板ガラスを加熱する加熱手段とを有する装置である。そして加熱により裁断線1に沿って集中的に発生した熱ひずみによって裁断線のクラックを進展させ、裁断線1の外側周辺部のガラスを裁断線および引出線で下方に脱落、分離するという方法が記載されている。 The sheet glass shaping device disclosed in Non-Patent Document 1 includes a supporting and fixing means for horizontally supporting an inner portion of a cutting line of the sheet glass by a vacuum suction means, and an outer portion of the cutting line 1 in proximity to or in contact with the outer portion of the cutting line 1 And a heating means for heating a part of the plate glass. And the crack of a cutting line is advanced by the thermal strain which generate | occur | produced intensively along the cutting line 1 by heating, and the glass of the outer periphery part of the cutting line 1 is dropped and separated below with a cutting line and a leader line. Are listed.

非特許文献2には、切断閉曲線入りガラス板の折割装置とその装置を用いてガラス板を切り抜く方法が開示されている。 Non-Patent Document 2 discloses a glass plate folding device with a closed closed curve and a method of cutting out a glass plate using the device.

実開平5−19331Japanese Utility Model 5-19331

非特許文献2には、ガラス板材に閉曲線の切り筋1を刻設し、その後ガラス板材の端面から閉曲線に刻設された切り筋1に至る新たな切り筋23を付与し、ガラス板にベンディングの力を与えて切り筋1と切り筋23に沿って折割することにより、閉曲線に囲まれた部分のガラス板と周端部のガラス板を分離する方法が記載されている。 In Non-Patent Document 2, a cut line 1 having a closed curve is engraved on a glass plate material, and then a new cut line 23 extending from the end surface of the glass plate material to the cut line 1 engraved on the closed curve is provided, and the glass plate is bent. The method of separating the glass plate of the part enclosed by the closed curve and the glass plate of a peripheral part by giving this force and breaking along the cut line 1 and the cut line 23 is described.

しかしながら、特許文献1に記載されたガラス板の切り抜き方法によれば、熱風吹付工程において、板ガラスを輪郭線の内側部分でのみ支持し、輪郭線から端材部分を端材部分の自重および上部からの熱風の風圧により下方に脱落させて分離するので、端材部分の先端が切り抜くガラス板の端面に擦れて、ガラス板の端面にチッピング(欠け)やクラックが発生するという問題点があった。 However, according to the glass plate cutting method described in Patent Document 1, in the hot air spraying process, the plate glass is supported only at the inner portion of the contour line, and the end material portion from the contour line is measured from the weight of the end material portion and from the upper part. Therefore, there is a problem in that chipping (chips) and cracks occur on the end surface of the glass plate because the tip of the end material portion rubs against the end surface of the cut glass plate.

また、輪郭線および切断線の加熱による熱ひずみを、熱風吹き付けノズルを板ガラス上の空間で移動させながら吹き付けるので同時に発生させることが難しく、ガラス板に捻れが生じ、これによりガラス端材の脱落が部分的に行われなかったり、分離時にガラス板の端面にチッピングが生じるという問題点があった。 In addition, it is difficult to generate thermal strain due to heating of the contour line and cutting line while moving the hot air spray nozzle in the space above the plate glass, so that it is difficult to generate simultaneously, and the glass plate is twisted. There was a problem that it was not performed partially or chipping occurred on the end face of the glass plate during separation.

非特許文献1および非特許文献2に記載された方法においても、周端部のガラス板を上方向から下方向に外力を作用させて折り割るようにして分離するので、切り抜かれたガラス製品の外周端面にはチッピングやクラックが発生しやすいという問題点があった。 Even in the methods described in Non-Patent Document 1 and Non-Patent Document 2, the glass plate at the peripheral edge is separated by applying an external force from the upper direction to the lower direction so that the glass plate is broken. There was a problem that chipping and cracks were likely to occur on the outer peripheral end face.

本発明は、上記の従来技術が有していたこのような技術課題を解決するためになされた発明であって、ガラス板から所望の形状の外周を有するガラス板製品を、チッピングや傷がなどの欠点が生じないように切り抜く方法を提供することを目的とする。 The present invention was made in order to solve such technical problems of the above-described conventional technology, and a glass plate product having an outer periphery of a desired shape from a glass plate is chipped or scratched. It aims at providing the method of cutting out so that the fault of this may not arise.

本発明の請求項1は、ガラス板から所望の輪郭のガラス板製品を切り抜きにより製造する方法であって、ガラス板の一方の面に輪郭線を刻設する輪郭線刻設工程と、前記輪郭線の外側のガラス板周辺部の縁端と前記輪郭線の外側近傍とを結ぶ複数の引き出し線を刻設する引き出し線刻設工程と、前記ガラス板周辺部を加熱して引き出し線を前記輪郭線に延伸到達させる引き出し線延伸工程とを有し、前記引き出し線延伸工程では、前記ガラス板を略水平に支持して、前記加熱により発生させた熱ひずみにより前記ガラス板周辺部を外側略水平方向に前記輪郭線で分離することを特徴とする。 Claim 1 of the present invention is a method for producing a glass sheet product having a desired contour from a glass plate by cutting out, and a contour engraving step for engraving a contour line on one surface of the glass plate, and the contour A drawing line engraving step for engraving a plurality of lead lines connecting the edge of the outer periphery of the glass plate and the outer periphery of the contour line; and heating the glass plate peripheral part to draw the outline of the lead line A drawing wire drawing step for drawing and reaching the wire, and in the drawing wire drawing step, the glass plate is supported substantially horizontally, and the peripheral portion of the glass plate is substantially horizontally outside by the thermal strain generated by the heating. The direction is separated by the contour line.

請求項2は、請求項1において、ガラス板を、輪郭線内のガラス板を支持する内側支持部と内側支持部を取り囲むように配設されガラス板周辺部を加熱状態で支持する外側支持部とを有する支持台に載置して支持することを特徴とする。 A second aspect of the present invention provides the inner support portion for supporting the glass plate within the contour line and the outer support portion for supporting the peripheral portion of the glass plate in a heated state. It is mounted and supported on the support stand which has these.

請求項3は、請求項2において、外側支持部は内側支持部と隙間を隔てて配設されていることを特徴とする。 A third aspect is characterized in that, in the second aspect, the outer support portion is disposed with a gap from the inner support portion.

請求項4は、請求項2または3において、ガラス板周辺部の加熱を、外側支持部のからの伝熱により加熱することを特徴とする。 A fourth aspect is characterized in that, in the second or third aspect, the glass plate peripheral portion is heated by heat transfer from the outer support portion.

請求項5は、請求項1〜4のいずれにおいて、ガラス板周辺部を250℃以上に加熱することを特徴とする。 A fifth aspect of the present invention is characterized in that, in any one of the first to fourth aspects, the peripheral portion of the glass plate is heated to 250 ° C. or higher.

請求項6は、請求項1〜5のいずれかにおいて、引き出し線を、直線としかつ相隣り合う引き出し線の交叉角度が120度以下になるように刻設することを特徴とする。 A sixth aspect of the present invention is characterized in that, in any one of the first to fifth aspects, the lead lines are straight lines and the crossing angles of the adjacent lead lines are 120 degrees or less.

請求項7は、輪郭線および/または前記引き出し線を、超硬合金製のホイールカッターまたはダイヤモンドカッターによる始発点の入刻と該始発点からレーザビームを走査照射による加熱により刻設することを特徴とする。 According to a seventh aspect of the present invention, the contour line and / or the lead line are engraved by engraving a starting point by a wheel cutter or a diamond cutter made of cemented carbide and heating by scanning irradiation with a laser beam from the starting point. And

本発明によれば、ガラス板周辺部の縁端と輪郭線を結ぶ引き出し線を、ガラス板周辺部の縁端と輪郭線の外側近傍の位置を刻設する引き出し線刻設工程(第1の刻設)と、ガラス板周辺部の加熱により発生させたガラスの熱ひずみにより、第1刻設で形成した引き出し線を輪郭線の外側近傍の位置から輪郭線に至るまで延伸到達させる引き出し線延伸工程(第2の刻設)の複数の工程で刻設する。第2の刻設をガラス板周辺部の加熱により行うので、複数の引き出し線が輪郭線に到達したときの熱ひずみの解消により、ガラス板周辺部が輪郭線の外側水平方向にはじき出されるように移動して、輪郭線内外のガラス板の分離が行われる。ガラス板周辺部は引き出し線で分離して個々のガラス板片になる。 According to the present invention, a lead line engraving step (first step) for engraving a position connecting the edge of the glass plate peripheral portion and the outline to the outside edge of the edge of the glass plate and the outline. Leading line stretching that stretches and reaches the lead line formed by the first carving from the position near the outside of the contour line to the contour line due to the thermal strain of the glass generated by heating the peripheral part of the glass plate It is engraved in a plurality of processes (second engraving). Since the second engraving is performed by heating the peripheral portion of the glass plate, the peripheral portion of the glass plate is ejected in the outer horizontal direction of the contour line by eliminating the thermal strain when the plurality of lead lines reach the contour line. It moves and the glass plate inside and outside the outline is separated. The peripheral part of the glass plate is separated by lead wires into individual glass plate pieces.

複数の引き出し線について第2の刻設が略同時に完了するので、輪郭線の内外のガラス板について反りや捻れが生じない。これにより輪郭線部分のガラスに欠けを生じることなく分離できる。また、引き出し線延伸工程でガラス板全体を略水平に支持するので、ガラス板周辺部は輪郭線から外側方向略水平に移動して分離される。これにより輪郭線の内側のガラス板と輪郭線外側のガラス周辺部とが分離するときに擦れることがなく、輪郭線に沿ってガラスに傷がついたりチッピングが生じたりすることがない。 Since the second engraving is completed at the same time for the plurality of lead lines, the glass plates inside and outside the contour line are not warped or twisted. Thereby, it can isolate | separate, without producing a crack in the glass of an outline part. Moreover, since the whole glass plate is supported substantially horizontally at the lead line extending | stretching process, a glass plate periphery part moves to an outer side direction substantially horizontal from a contour line, and is isolate | separated. Thus, when the glass plate inside the contour line and the glass peripheral portion outside the contour line are separated from each other, the glass plate is not rubbed, and the glass is not damaged or chipped along the contour line.

加えて、ガラス板周辺部の加熱をガラス板周辺部を支持する支持台に設けたヒータの伝熱により加熱することにより、ガラス板周辺部を均一に加熱することができ、各引き出し線について輪郭線までの延伸速度を略同じ大きさにすることができ、引き出し線を一層確実に輪郭線に同時に到達させることができる。これにより、ガラス板の熱ひずみの開放を略同時にすることができ、ガラスの捻れや反りに起因するチッピングや欠けが生じない。 In addition, by heating the periphery of the glass plate by the heat transfer of the heater provided on the support that supports the periphery of the glass plate, the periphery of the glass plate can be heated uniformly, and each lead line is contoured. The drawing speed to the line can be made substantially the same, and the lead line can reach the contour line more reliably at the same time. As a result, the thermal strain of the glass plate can be released almost simultaneously, and chipping and chipping due to glass twisting and warping do not occur.

加えて、引き出し線を直線かつ相隣り合う引き出し線の交叉角度が120度以下になるように刻設することにより、ガラス板周辺部を外側に向かって一層確実に移動させることができる。これにより輪郭線で囲まれたガラス板製品を取り出すのが一層容易になる。 In addition, by engraving the lead lines so that the crossing angle of the straight and adjacent lead lines is 120 degrees or less, the peripheral portion of the glass plate can be moved more reliably toward the outside. This makes it easier to take out the glass plate product surrounded by the outline.

以下に本発明の実施の形態について図面を用いて説明する。図1は、正方形のガラス板から円盤状のガラス板製品を切り抜くのに刻設する輪郭線および引き出し線の刻設例を示す図である。ガラス板10の一方の面の中央部に円形の輪郭線2を刻設する。この輪郭線2は、刻設手段として超硬合金製のホイールカッターやダイヤモンドカッターにより刻設する公知の方法を用いることができる。またカッターで輪郭線の始発点となる切り傷を点状に入れ、その始発点から円形状にレーザービームを走査しながら照射して、ガラスの熱ひずみにより円形状の輪郭線2を刻設してもよい。レーザービームの照射による加熱と照射した部分を冷却(水や空気の噴射などによる)する方法を採用することもできる。さらに、レーザービームの照射の代わりに、熱風を吹き付けて刻設してもよい。輪郭線2は、通常ガラス板厚み方向の一部の深さまでまたは他方の面に達するまで刻設される。 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram illustrating an engraving example of contour lines and lead lines that are engraved to cut out a disk-shaped glass sheet product from a square glass sheet. A circular contour 2 is engraved at the center of one surface of the glass plate 10. The contour line 2 may be a known method of engraving with a wheel cutter or diamond cutter made of cemented carbide as the engraving means. In addition, a cut that becomes the starting point of the contour line is put in a dot shape with a cutter, and a laser beam is irradiated while scanning the circular shape from the starting point, and a circular contour line 2 is engraved by the thermal strain of the glass. Also good. A method of heating by laser beam irradiation and a method of cooling the irradiated part (by jetting water or air) can also be employed. Further, instead of laser beam irradiation, hot air may be blown and engraved. The contour line 2 is usually engraved up to a certain depth in the thickness direction of the glass plate or until the other surface is reached.

次に、複数の引き出し線3a,3b,3cをガラス板周辺部4内の輪郭線と同一の面に刻設する。いずれの引き出し線3a,3b,3cもガラス周辺部4の縁端(外周)と輪郭線2の外側近傍の間に刻設する(第1の刻設)。引き出し線3は、この時点では輪郭線2とは隔離している。引き出し線3は、輪郭線2と同じように超硬合金製のホイールカッターやダイヤモンドカッターを用いる公知の方法により刻設することができる。またカッターで引き出し線の始発点になる切り傷を点状にいれ、その始発点からレーザービームを走査しながら照射して、ガラスの熱ひずみの作用により刻設してもよい。 Next, the plurality of lead lines 3 a, 3 b, 3 c are engraved on the same surface as the contour line in the glass plate peripheral part 4. Any of the lead lines 3a, 3b, 3c is engraved between the edge (outer periphery) of the glass peripheral portion 4 and the vicinity of the outside of the outline 2 (first engraving). The lead line 3 is isolated from the contour line 2 at this point. The lead wire 3 can be engraved by a known method using a cemented carbide wheel cutter or a diamond cutter in the same manner as the contour line 2. In addition, a cut which becomes the starting point of the lead line with a cutter may be put in a dot shape, and the laser beam may be irradiated while scanning from the starting point and engraved by the action of thermal strain of the glass.

通常引き出し線は直線状に刻設するが、後のガラス板の分離に支障がなければ曲線状、折れ曲がり線状、折れ線上など等の形状に刻設してもよい。引き出し線3の先端と輪郭線までの最短距離は、ガラス板の厚み、大きさ、ガラス板製品の大きさにもよるが、通常1〜5mm好ましくは2〜4mmとするのがよい。引き出し線3a,3b,3cは、複数の刻設手段を用いて同時に刻設してもよく、一つの刻設手段により順次刻設してもよい。輪郭線3a,3b,3cはガラス板厚み方向の一部または全部(他方の面に至るように)に刻設される。 Usually, the lead line is engraved in a straight line shape, but may be engraved in a shape such as a curved line, a bent line shape, a broken line, or the like as long as the separation of the subsequent glass plate is not hindered. The shortest distance from the leading end of the lead wire 3 to the contour line depends on the thickness and size of the glass plate and the size of the glass plate product, but is usually 1 to 5 mm, preferably 2 to 4 mm. The lead lines 3a, 3b, 3c may be simultaneously engraved using a plurality of engraving means, or may be sequentially engraved by one engraving means. The contour lines 3a, 3b, 3c are engraved on a part or all of the glass plate thickness direction (so as to reach the other surface).

次に、ガラス板周辺部4の端から輪郭線2の外側近傍まで設けられた引き出し線3を、輪郭線2まで延伸到達(第2の刻設)させるために、ガラス板周辺部4を加熱する。図2は、ガラス板周辺部4を加熱する方法の一実施例を説明する図である(ガラス板10は図1のA−A断面を示し、第2の刻設直前の状態を示す)。輪郭線2と引き出し線3が刻設されたガラス板を支持台5に載置する。刻設した面をヒーターに接するように載置してもよく、刻設面の反対面を支持台5に接するように載置してもよい。支持台5は、内側支持部5aと内側支持部5aを環状に取り囲み内部にヒーターが埋設された外側支持部5bとからなり、内側支持部5aと外側支持部は上部の支持面(載置面)の高さが同じであり、隙間により隔てられている。 Next, the glass plate peripheral portion 4 is heated so that the lead wire 3 provided from the end of the glass plate peripheral portion 4 to the vicinity of the outside of the contour line 2 reaches the contour line 2 (second engraving). To do. FIG. 2 is a diagram for explaining an embodiment of a method for heating the peripheral portion 4 of the glass plate (the glass plate 10 shows the AA cross section of FIG. 1 and shows a state immediately before the second engraving). A glass plate on which the contour line 2 and the lead line 3 are engraved is placed on the support base 5. The engraved surface may be placed in contact with the heater, or the opposite surface of the engraved surface may be placed in contact with the support base 5. The support 5 includes an inner support portion 5a and an outer support portion 5b that surrounds the inner support portion 5a in an annular shape and has a heater embedded therein. The inner support portion 5a and the outer support portion are upper support surfaces (mounting surfaces). ) Are the same height and are separated by a gap.

支持台5の形状および寸法は、ガラス板10の外周の形状および寸法と略同じまてはそれより大きくするのが好ましい。輪郭線が内側支持部と外側支持部の隙間に位置するようにガラス板を支持台上に載置する。円盤状のガラス板製品を切り抜くときは、内側支持部5aを環状に外側支持部5bが取り囲み、ヒーター6が外側支持部内に埋設され、その上に載置されたガラス板のガラス板周辺部4を加熱する。 It is preferable that the shape and size of the support base 5 be substantially the same as or larger than the shape and size of the outer periphery of the glass plate 10. The glass plate is placed on the support base so that the contour line is positioned in the gap between the inner support portion and the outer support portion. When cutting out a disk-shaped glass plate product, the inner support portion 5a is annularly surrounded by the outer support portion 5b, the heater 6 is embedded in the outer support portion, and the glass plate peripheral portion 4 of the glass plate placed thereon. Heat.

支持台5はステンレス、アルミニウム、青銅などの熱伝導が良好な金属で通常構成される。これによりガラス板周辺部4を急速かつ均一に加熱することができる。耐熱性緩衝材からなる保護シートを支持台5の載置面に敷いてもよい。ガラス板表面に取り扱い傷がつくのを一層確実に防止できる。外周支持台の載置面を急速に加熱することによりガラス板に熱ひずみを発生させ、引き出し線を輪郭線に至るまで延伸させる。すでに所定温度に加熱した支持台にガラス板を載せることによりガラス板周辺部4に熱ひずみを発生させ、引き出し線の延伸をはかってもよい。支持台5は、通常ガラス板10の大きさとと同じかそれより外形が大きいものが均一加熱をする上で好ましい。 The support base 5 is usually made of a metal having good heat conduction such as stainless steel, aluminum, bronze or the like. Thereby, the glass plate peripheral part 4 can be heated rapidly and uniformly. A protective sheet made of a heat-resistant buffer material may be laid on the mounting surface of the support base 5. It can prevent more reliably that the glass plate surface is damaged by handling. By rapidly heating the mounting surface of the outer peripheral support base, thermal strain is generated in the glass plate, and the lead line is extended to reach the contour line. The glass plate may be stretched by placing a glass plate on a support base that has already been heated to a predetermined temperature, thereby generating thermal strain in the peripheral portion 4 of the glass plate. In general, the support 5 is preferably the same as the glass plate 10 or larger in outer shape in order to perform uniform heating.

刻設された引き出し線3a,3b,3cは加熱されると、発生した熱ひずみを解消するために、自ら輪郭線の方向に向かって延伸する。またガラス板の厚み方向にも延伸しガラス板の他の面に達する。ガラス内に生じた熱ひずみは、引き出し線3のガラス板厚み方向への進行およびガラス板の他方の面への到達と、輪郭線に向かう延伸および輪郭線への到達を誘起する。すなわち加熱によりガラス板内に生じた熱ひずみを解消しようとする内部エネルギーは、輪郭線のガラス板厚み方向への進行を引き起こし、また輪郭線に向かう延伸を引き起こす。 When the engraved lead wires 3a, 3b, and 3c are heated, the drawn wires 3a, 3b, and 3c themselves are stretched in the direction of the contour line in order to eliminate the generated thermal strain. It also extends in the thickness direction of the glass plate and reaches the other surface of the glass plate. The thermal strain generated in the glass induces the advancement of the lead wire 3 in the thickness direction of the glass plate and the reaching of the other surface of the glass plate, stretching toward the contour line, and reaching the contour line. That is, the internal energy for eliminating the thermal strain generated in the glass plate by heating causes the contour line to progress in the thickness direction of the glass plate, and also causes stretching toward the contour line.

引き出し線が輪郭線に到達することにより、ガラス板周辺部4内に蓄積した熱ひずみは一気に開放され、ガラス板周辺部4の引き出し線で区画された各ガラス片は、分離した状態であるいは部分的に分離しない個所があっても、ガラス板製品1の外側水平方向に支持台表面に沿ってはじき出される。かくして輪郭線に沿ってガラス板製品1とガラス板周辺部4が分離される。 When the lead wire reaches the contour line, the thermal strain accumulated in the glass plate peripheral portion 4 is released at a stretch, and each glass piece partitioned by the lead wire of the glass plate peripheral portion 4 is separated or partially Even if there is a part that is not separated, the glass plate product 1 is ejected along the surface of the support table in the horizontal direction outside. Thus, the glass plate product 1 and the glass plate peripheral portion 4 are separated along the contour line.

図3は、刻設された引き出し線3のガラス板厚み方向の状態を模式的に示したガラス板の断面図である。図3(a)は、刻設した引き出し線の一部分についての模式断面図であり、加熱前の引出線はガラス板厚み方向の一部まで刻設されており、加熱により刻設面と反対側の面に至るまでガラス板の厚み方向に進行する。 FIG. 3 is a cross-sectional view of the glass plate schematically showing the state of the engraved lead wire 3 in the thickness direction of the glass plate. FIG. 3A is a schematic cross-sectional view of a part of the drawn lead line. The lead line before heating is partly engraved in the thickness direction of the glass plate and is opposite to the engraved surface by heating. It progresses in the thickness direction of the glass plate until it reaches the surface.

図3(b)は、引き出し線が刻設されていない輪郭線外側近傍における引き出し線の状態を示す模式断面図である。加熱前では引き出し線は存在しないが、加熱により初めて引き出し線がガラス板厚み方向に貫通するように形成される。図3(a)の引き出し線を刻設した部分では、加熱前に引き出し線がガラス板厚み方向にすでに貫通するように刻設されていてもかまわない。 FIG. 3B is a schematic cross-sectional view showing a state of the lead line in the vicinity of the outside of the contour line where the lead line is not engraved. There is no lead wire before heating, but the lead wire is formed so as to penetrate in the thickness direction of the glass plate only by heating. In the portion where the lead line in FIG. 3A is engraved, the lead line may be engraved so as to already penetrate in the thickness direction of the glass plate before heating.

本発明では、引き出し線の輪郭線への到達による熱ひずみの解消を、刻設した全ての引き出し線についてほぼ同時に行うことができるので、ガラス板の反りやねじれが生じない状態でガラス板の分離が行われる。引き出し線を少なくとも3本以上いれることが、ガラス板製品1からガラス板周辺部4を外側にスムースに分離する上で好ましい。本発明では引き出し線の数は、ガラス板製品の大きさ、形状により適宜定められる。引き出し線の本数の上限値はとくにないが、通常5〜6本で十分である。また引き出し線は通常、直線上に設けるが、曲線、折れ線などであってもよい。 In the present invention, since the thermal strain due to reaching the outline of the lead wire can be eliminated almost simultaneously for all the drawn lead wires, the glass plate can be separated without warping or twisting of the glass plate. Is done. It is preferable to insert at least three lead wires in order to smoothly separate the glass plate peripheral portion 4 from the glass plate product 1 to the outside. In the present invention, the number of lead wires is appropriately determined depending on the size and shape of the glass plate product. There is no particular upper limit on the number of lead lines, but 5-6 are usually sufficient. The lead line is usually provided on a straight line, but may be a curved line or a broken line.

支持台5を構成する内側支持部と外側支持部は、それらの支持面(ガラス板を載置する面)が同じレベル(同一高さ)にする。これにより、ガラス板を輪郭線で分離するときのガラス板周辺部の垂直成分の移動、脱落がなくなり、水平方向の移動になる。これにより輪郭線で分離後のガラス板製品の端面が擦れて、チッピングや傷が発生するのを防止できる。 The inner support portion and the outer support portion constituting the support base 5 have their support surfaces (surfaces on which the glass plate is placed) at the same level (same height). Thereby, when the glass plate is separated by the contour line, the vertical component does not move or drop off in the peripheral portion of the glass plate, and the movement is in the horizontal direction. Thereby, it can prevent that the end surface of the glass plate product after isolation | separation is rubbed with a contour line, and a chipping and a damage | wound generate | occur | produce.

支持台5を構成する内側支持部5aと外側支持部5bは連続していてもよく、支持台として一体構造であっても差し支えない。内側支持部5aと外側支持部5bは、その間に隙間をあけて配設すると、両者は熱的により遮断されるので好ましい。このとき内側支持部5aの載置面7を強制冷却して、内側支持部上のガラス板と外側支持部上のガラス板との温度差をより大きくしてもよい。 The inner support portion 5a and the outer support portion 5b constituting the support base 5 may be continuous, or may be an integral structure as the support base. It is preferable to arrange the inner support portion 5a and the outer support portion 5b with a gap between them because they are thermally blocked. At this time, the mounting surface 7 of the inner support portion 5a may be forcibly cooled to further increase the temperature difference between the glass plate on the inner support portion and the glass plate on the outer support portion.

ガラス板の厚みが約0.7mm程度であれば、約250℃以上に外側支持部5bの載置面7(したがってガラス板が略250℃)を加熱することにより、ガラス板の分離を迅速に行うことができる。またガラス板の厚みが約1mm以上であれば、外側支持部5bの載置面7を400℃以上に加熱することにより、ガラス板の分離を迅速に行うことができる。 If the thickness of the glass plate is about 0.7 mm, the glass plate can be quickly separated by heating the mounting surface 7 of the outer support portion 5b to about 250 ° C. or higher (therefore, the glass plate is about 250 ° C.). It can be carried out. Moreover, if the thickness of a glass plate is about 1 mm or more, a glass plate can be isolate | separated rapidly by heating the mounting surface 7 of the outer side support part 5b to 400 degreeC or more.

加熱は、より大きい熱ひずみを発生させ、かつ切り抜き加工時間を短縮する上で、急速加熱するのが好ましい。たとえば支持台の載置面を室温から250℃まで20〜40秒程度で加熱して、輪郭線および引き出し線の刻設から2〜3分程度の短時間でガラス板製品をガラス板から切り抜くことができる。また、加熱された支持台に刻設が終わったガラス板を載置する場合、ガラスの分離は支持台に載置後約30秒程度で分離できる。 The heating is preferably rapid heating in order to generate a larger thermal strain and shorten the cutting time. For example, the mounting surface of the support base is heated from room temperature to 250 ° C. in about 20 to 40 seconds, and the glass plate product is cut out from the glass plate in a short time of about 2 to 3 minutes from the engraving of the contour line and the lead line. Can do. In addition, when a glass plate that has been engraved is placed on a heated support table, the glass can be separated in about 30 seconds after being placed on the support table.

ガラス板10からガラス板製品1を取り出すには、分離後内側支持部1を上方向に外側支持部4より競り上がらせまたは下降させて取り出すのがよい。 In order to take out the glass plate product 1 from the glass plate 10, it is preferable to take out the inner support 1 after being separated from the outer support 4 by raising or lowering the inner support 1 upward.

本発明の実施の対象となるガラス板は、特にその組成について制限されない。ガラスとして、ソーダ石灰珪酸ガラス、硼珪酸ガラス、アルミノ硼珪酸ガラス、無アルカリガラスなどを例示できる。また、ガラスの用途上の分類からプラズマディスプレイ用ガラス、TFT液晶表示用ガラスなどのフラットディスプレイ用ガラス、磁気記録媒体用ガラスなどを例示することができる。これらのガラスは、いずれも加熱することにより熱ひずみを発生させることができ、それによりガラス組成により定まる線膨張係数などの物理的性質により、適切な温度に加熱することに切り抜くことができる。 The glass plate used as the object of implementation of this invention is not restrict | limited especially about the composition. Examples of the glass include soda lime silicate glass, borosilicate glass, alumino borosilicate glass, and alkali-free glass. Moreover, glass for plasma display, glass for flat displays, such as glass for TFT liquid crystal display, glass for magnetic recording media etc. can be illustrated from the classification | category on the use of glass. Any of these glasses can generate thermal strain by heating, and can be cut out by heating to an appropriate temperature due to physical properties such as a linear expansion coefficient determined by the glass composition.

本発明の実施の対象となるガラス板の厚みについては特に限定されないが、0.5mm〜2.0mm程度の比較的厚みが薄いガラス板に適している。以下に本発明を実施例により詳述する。 Although it does not specifically limit about the thickness of the glass plate used as the object of implementation of this invention, It is suitable for the glass plate with comparatively thin thickness of about 0.5 mm-2.0 mm. Hereinafter, the present invention will be described in detail with reference to examples.

縦横寸法が各250mm、厚みが0.7mmのTFT液晶表示用ガラス板を図2の断面図で示す直径が200mmの内側支持部とそれを囲む一辺が280mmの正方形の外側支持部からなる支持台の上に載置した。支持台の載置面には耐熱性の緩衝性保護シートを被せた。直径200mmの円形の輪郭線を、超硬合金製のカッターホイールで始発点として約3mmの長さの予備亀裂を刻設し、そこから炭酸ガスレーザービームの照射とそれに引き続く照射点を噴射水により冷却する公知の熱応力割断の方法で、円形の輪郭線を刻設した。輪郭線は内側支持部および外側支持部を同時回転させて円形に刻設した。また輪郭線を内側支持部と外側支持部の隙間に位置するようにし、ほぼ全周にわたってガラス板の反対面まで到達させた。 A TFT liquid crystal display glass plate having vertical and horizontal dimensions of 250 mm each and a thickness of 0.7 mm, a support base comprising an inner support portion having a diameter of 200 mm and a square outer support portion having a side of 280 mm surrounding the glass support plate shown in the sectional view of FIG. Placed on the top. The mounting surface of the support base was covered with a heat-resistant buffering protective sheet. A preliminary crack with a length of about 3 mm is engraved on the circular contour line with a diameter of 200 mm as a starting point with a cemented carbide cutter wheel. The carbon dioxide laser beam irradiation and the subsequent irradiation point are then sprayed with water. A circular outline was engraved by a known thermal stress cleaving method for cooling. The contour line was engraved in a circular shape by simultaneously rotating the inner support portion and the outer support portion. In addition, the contour line was positioned in the gap between the inner support portion and the outer support portion, and reached the opposite surface of the glass plate over almost the entire circumference.

次に、引き出し線を刻設した。引き出し線の刻設は輪郭線と同じようにして、超合金製カッターホイールで約3mmの長さの始発点をつくり、そこから炭酸ガスレーザの照射によりガラス板の縁端まで直線状に刻設した。このような引き出し線を3本、隣り合う引き出し線の交叉角度が約120度になるように刻設した。なおこの始発点は輪郭線から最短距離で3mm離れた輪郭線の外側のガラス板表面に刻設した。 Next, a lead line was engraved. The lead wire was engraved in the same way as the contour line, and a starting point of about 3 mm in length was made with a superalloy cutter wheel, and from there it was engraved in a straight line to the edge of the glass plate by irradiation with a carbon dioxide laser. . Three such lead lines were engraved so that the crossing angle between adjacent lead lines was about 120 degrees. This starting point was engraved on the surface of the glass plate outside the contour line at a distance of 3 mm at the shortest distance from the contour line.

次にガラス板上の水分をぬぐい取り、外側支持部の載置面直下に埋設されたヒーターのスイッチをオンにして一気に(約30秒後)載置面が250℃になるように昇温した。3本の輪郭線がほぼ同時に瞬間的に輪郭線に延伸到達して、輪郭線より外側のガラス部材が3つに分離してガラス円板から外側にはじき出されるようにして分離した。その後内側支持部をリフター(図2には図示されていない)で上昇させ、ガラス円盤を内側支持部から取り上げガラス板の切り抜き作業を完了した。得られたガラス円盤の外周にはチッピング(欠け)や傷が見あたらず、また切断面の面方向はガラス板主表面と垂直方向であった。 Next, the moisture on the glass plate was wiped off, the heater embedded under the mounting surface of the outer support portion was turned on, and the temperature was raised so that the mounting surface reached 250 ° C. (after about 30 seconds). . The three contour lines reached the contour line instantaneously almost at the same time, and the glass member outside the contour line was separated into three so as to be ejected outward from the glass disk. Thereafter, the inner support portion was raised by a lifter (not shown in FIG. 2), and the glass disk was picked up from the inner support portion to complete the glass plate cutting operation. Chipping (chips) and scratches were not found on the outer periphery of the obtained glass disk, and the surface direction of the cut surface was perpendicular to the main surface of the glass plate.

厚みが1.0mmである場合、加熱温度を400℃にすることにより、厚みが0.7mmのガラス板と同じように、外周にチッピングや傷がないガラス円盤を得ることができた。 When the thickness was 1.0 mm, by setting the heating temperature to 400 ° C., a glass disk having no chipping or scratches on the outer periphery could be obtained in the same manner as a glass plate having a thickness of 0.7 mm.

上記の実施例では、支持台上で輪郭線の刻設、引き出し線の刻設、加熱(引き出し線の輪郭線への延伸到達)をこの順に行ったが、引き出し線の刻設後、輪郭線を刻設し、その後加熱を行ってもよい。また輪郭線と引き出し線をガラス板の同じ面に刻設したが、それらを反対面に刻設してもよい。 In the above embodiment, engraving of the contour line, engraving of the lead line, and heating (reaching reaching the contour line of the lead line) were performed in this order on the support base. May be engraved and then heated. Further, although the contour line and the lead line are engraved on the same surface of the glass plate, they may be engraved on the opposite surface.

また上記の実施例では、支持台に載置したガラス板に輪郭線および引き出し線を刻設後、加熱を開始して熱応力を発生させたが、輪郭線と引き出し線を刻設したガラス板を、予め所定温度に加熱した支持台上に載置することによりガラス板を加熱してもよい。このときのガラス板の支持台に接する面は、刻設面でもあってもよく刻設面と反対の面であってもよい。また、刻設する輪郭線は所望のガラス板製品1の輪郭となる閉曲線であればよく、円形に制限されない。さらに切り抜くガラス板製品の外周形状によっては、加熱可能な支持台と加熱しない支持台の数および配置関係を適当に組み合わせた支持台を用いて、1枚のガラス板から複数のガラス板製品を同時に切り抜くことも可能である。 In the above embodiment, the engraving line and the lead line are engraved on the glass plate placed on the support base, and then heating is started to generate thermal stress. The glass plate may be heated by placing it on a support base heated to a predetermined temperature in advance. The surface in contact with the glass plate support at this time may be an engraved surface or a surface opposite to the engraved surface. The contour line to be engraved may be a closed curve that is the contour of the desired glass sheet product 1 and is not limited to a circle. Furthermore, depending on the outer peripheral shape of the glass plate product to be cut out, a plurality of glass plate products can be simultaneously formed from one glass plate using a support table in which the number and arrangement relationship of the support table that can be heated and the non-heated support table are appropriately combined. It is also possible to cut out.

本発明はガラス板からガラス板製品を切り抜くのに利用される The present invention is used to cut glass plate products from glass plates.

図1は、本発明の円盤状のガラス板を切り抜くのに刻設する輪郭線および引き出し線の刻設例を示す図である。FIG. 1 is a diagram showing an engraving example of contour lines and lead lines that are engraved to cut out the disk-shaped glass plate of the present invention. 図2は、本発明のガラス板を加熱する方法の一実施例を説明する図である。FIG. 2 is a view for explaining an embodiment of a method for heating a glass plate of the present invention. 図3は、本発明の刻設された引き出し線のガラス板厚み方向の状態を模式的に示す図である。FIG. 3 is a diagram schematically showing the state of the engraved lead wire of the present invention in the thickness direction of the glass plate.

符号の説明Explanation of symbols

1:ガラス板製品
2:輪郭線
3a,3b,3c:引き出し線
4:ガラス板周辺部
5:支持台
5a:内側支持部
5b:外側支持部
6:ヒーター
7:載置面
10:ガラス板


1: Glass plate product 2: Contour lines 3a, 3b, 3c: Lead wire 4: Glass plate peripheral portion 5: Support base 5a: Inner support portion 5b: Outer support portion 6: Heater 7: Mounting surface 10: Glass plate


Claims (7)

ガラス板から所望の輪郭のガラス板製品を切り抜きにより製造する方法において、ガラス板の一方の面に輪郭線を刻設する輪郭線刻設工程と、前記輪郭線の外側のガラス板周辺部の縁端と前記輪郭線の外側近傍とを結ぶ複数の引き出し線を刻設する引き出し線刻設工程と、前記ガラス板周辺部を加熱して引き出し線を前記輪郭線に延伸到達させる引き出し線延伸工程とを有し、前記引き出し線延伸工程では、前記ガラス板を略水平に支持して、前記加熱により発生させた熱ひずみにより前記ガラス板周辺部を外側略水平方向に前記輪郭線で分離することを特徴とするガラス板製品の切り抜き製造方法。 In a method for producing a glass plate product having a desired contour from a glass plate by cutting out, a contour line engraving step for engraving a contour line on one surface of the glass plate, and an edge of the periphery of the glass plate outside the contour line A lead line engraving step for engraving a plurality of lead lines connecting an end and the vicinity of the outside of the contour line; and a lead line stretching step for heating the periphery of the glass plate and extending the lead line to the contour line. And in the lead wire stretching step, the glass plate is supported substantially horizontally, and the peripheral portion of the glass plate is separated by the contour line in the substantially horizontal direction by the thermal strain generated by the heating. A cut-out manufacturing method for glass sheet products. 前記ガラス板を、前記輪郭線内のガラス板を支持する内側支持部と前記内側支持部を取り囲むように配設され前記ガラス板周辺部を加熱状態で支持する外側支持部とを有する支持台に載置して支持することを特徴とする請求項1に記載のガラス板製品の切り抜き製造方法。 A support base having an inner support portion for supporting the glass plate within the contour line and an outer support portion disposed so as to surround the inner support portion and supporting the peripheral portion of the glass plate in a heated state. 2. The cutout manufacturing method for a glass plate product according to claim 1, wherein the glass plate product is mounted and supported. 前記外側支持部は、前記内側支持部と隙間を隔てて配設されていることを特徴とする請求項2に記載のガラス板製品の切り抜き製造方法。 The said outer side support part is arrange | positioned with the said inner side support part and the clearance gap, The cutout manufacturing method of the glass plate product of Claim 2 characterized by the above-mentioned. 前記ガラス板周辺部の加熱を、前記外側支持部からの伝熱により加熱することを特徴とする請求項2または3に記載のガラス板製品の切り抜き製造方法。 The glass plate product cutout manufacturing method according to claim 2 or 3, wherein the glass plate peripheral portion is heated by heat transfer from the outer support portion. 前記ガラス板周辺部を250℃以上に加熱することを特徴とする請求項1〜4のいずれかに記載のガラス板製品の切り抜き製造方法。 The glass plate product cutout manufacturing method according to any one of claims 1 to 4, wherein the peripheral portion of the glass plate is heated to 250 ° C or higher. 前記引き出し線を直線とし、かつ相隣り合う引き出し線の交叉角度が120度以下になるように刻設することを特徴とする請求項1〜5のいずれかに記載のガラス板製品の切り抜き製造方法。 6. The glass sheet product cutout manufacturing method according to any one of claims 1 to 5, wherein the lead line is a straight line and the crossing angle between adjacent lead lines is 120 degrees or less. . 前記輪郭線および/または前記引き出し線を、超硬合金製のホイールカッターまたはダイヤモンドカッターによる始発点の入刻と該始発点からレーザビームを走査しながら照射する加熱により刻設することを特徴とする請求項1〜6のいずれかに記載のガラス板製品の切り抜き製造方法。


The contour line and / or the lead-out line are engraved by engraving a starting point with a wheel cutter or diamond cutter made of cemented carbide and heating by irradiating a laser beam from the starting point. The cut-out manufacturing method of the glass plate product in any one of Claims 1-6.


JP2005061760A 2005-03-07 2005-03-07 Method of manufacturing glass plate product by cutting out Pending JP2006240948A (en)

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JP2010006672A (en) * 2008-06-30 2010-01-14 Sanyo Electric Co Ltd Method for processing glass substrate and solar cell watch manufactured using cut glass substrate formed thereby
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JP2011140423A (en) * 2010-01-08 2011-07-21 Nippon Electric Glass Co Ltd Method for cutting glass sheet and cutting device
JP2011178575A (en) * 2010-02-26 2011-09-15 Hightech Engineering Kk Method for cutting glass sheet into mirror shape
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US10035724B2 (en) 2013-02-25 2018-07-31 Corning Incorporated Methods of manufacturing a thin glass pane
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US11713271B2 (en) 2013-03-21 2023-08-01 Corning Laser Technologies GmbH Device and method for cutting out contours from planar substrates by means of laser
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