JP4037169B2 - Side processing method of hard brittle plate - Google Patents

Side processing method of hard brittle plate Download PDF

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JP4037169B2
JP4037169B2 JP2002153494A JP2002153494A JP4037169B2 JP 4037169 B2 JP4037169 B2 JP 4037169B2 JP 2002153494 A JP2002153494 A JP 2002153494A JP 2002153494 A JP2002153494 A JP 2002153494A JP 4037169 B2 JP4037169 B2 JP 4037169B2
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plate
sides
tool
glass plate
processing
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JP2003340697A (en
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浩之 坂下
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Nakamura Tome Precision Industry 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

Description

【０００１】
【発明の属する技術分野】
この発明は、ディスプレイパネルの基板となるガラス板やセラミックス板その他の硬質脆性板の側辺の面取加工などを行う方法及び当該加工に用いる装置に関するものである。
【０００２】
【従来の技術】
ディスプレイパネル用のガラス基板を製造する際には、所定寸法に切断したガラス板の切断辺に残った鋭いエッジを削り落とすための面取加工や断面を円弧状にするアール加工その他の外形加工が必要となる。この種の加工は、加工するガラス板の幅寸法に合わせて配置した左右各一組の砥石群の間をガラス板を通過させることにより、両側辺を同時に加工するのが普通である。
【０００３】
図５は、面取加工を例にして従来の側辺加工方法を示したものである。まず、加工しようとするガラス板１より少し幅狭い固定台３６をテーブル（図示せず）上に固定し、ガラス板１を固定台３６上に固定する。固定されたガラス板の両側辺２は、固定台３６からはみ出して、テーブルから浮いた状態で固定される。ガラス板１には所定の２ヶ所に位置決めマーク３が設けられているので、この位置決めマーク３をカメラ４で読取り、ガラス板の側辺２の位置と傾きとを検出する。そして、ガラス板１の幅方向に対向して配置した左右各一組の砥石群５を図のＸ方向（ガラス板の幅方向）に移動して、検出された側辺の位置に合せる。更にガラス板を載置したテーブルを図のＣ方向（鉛直軸回りの回転方向）に回転して、ガラス板１の傾きを修正する。その上でテーブルを図のＹ方向（Ｘと直交する水平方向）に送ってガラス板の両側辺２、２を同時に面取加工する。
【０００４】
なお、図の面取砥石６は、ガラス板の側辺２と略平行な軸回りに回転する上砥石６ａと下砥石６ｂとを一組としたもので、上砥石６ａ及び下砥石６ｂは、それぞれ軸方向に間隔を隔てて固定した複数枚の円板砥石を備え、上下の円板砥石を互い違いに相互の間に入り込ませることにより、図６に示すように、ガラス板１の側辺２の上角２ａと下角２ｂとを同時に面取りする。なお、砥石６ａ、６ｂの回転方向は、図に矢印で示すように、ガラス板１の面の外側から端面側へと切り込む方向である。また、各砥石６ａ、６ｂの回転軸は、ガラス板の送り方向Ｙに対して僅かに傾斜しており、この傾斜角によって各円板砥石の切込量が設定されるようになっている。
【０００５】
上記のような従来方法でガラス板１の側辺加工を行うためには、次のような構造の加工装置が必要である。すなわち、ガラス板を載置固定するテーブルは、図のＹ方向に移動可能で、かつＣ方向の位置制御が可能でなければならない。左右の砥石群５は、加工するガラス板の厚さに合せてＺ方向（上下方向）に位置調整可能に装着され、かつ左右のものが各独立に位置決め可能でなければならない。
【０００６】
そして、精度の高い加工を行うためには、加工装置の精度と剛性が必要である。上記方法で側辺加工を行う従来装置は、工場の床面に据え付ける機台と、この機台上でＹ方向及びＣ方向に移動可能なテーブルと、左右の面取砥石群５を支持する通常は門形のフレームとが設けられ、そのそれぞれを十分に剛性と精度を備えたものとする必要があった。
【０００７】
上記構造の側辺加工装置は、同一機台上でガラス板の四辺の加工が可能である。すなわち、上記方法で対向する両側辺の加工を行った後、面取砥石群５を外側に開いて退避させた後、テーブルを復帰させ、更にＣ方向に９０度回転する。そして、面取砥石６を新たな両側辺の位置に合せてＸ方向に位置決めし、テーブルをＹ方向に移動することにより、ガラス板１の四辺の面取加工を行うことができる。
【０００８】
しかし、上記の方法では、テーブルの復帰及び旋回並びに面取砥石群５の退避及び再位置決めに時間がかかるため、タクトタイムが長くなるという問題が生ずる。そのため、同一寸法のガラス板を大量に加工するときは、上記構造の装置をＹ方向に２台設置して四辺加工を行うという方法が採用される。この方法では、上流側装置のテーブルからガラス板を持ち上げて下流側装置のテーブル上に降ろすという動作を行う受渡し装置が必要である。四辺を加工するときに必要なガラス板の９０度旋回は、下流側装置のテーブル旋回により行なっている。
【０００９】
【発明が解決しようとする課題】
上述した従来方法で面取加工を行う従来の側辺加工装置は、加工する板材（ガラス板）を載置するテーブルをＹ方向とＣ方向に移動かつ位置決め可能に設ける必要があったため、装置が大型になり、装置コストも高くなるという問題があった。またガラス板の寸法が変わるごとにテーブル上の固定台をガラス板の寸法に合わせて交換する必要があり、段取り作業に時間がかかるという問題があった。また、従来装置ではテーブルが移動するため、これを支持する機台の面積が大きくなり、大きな設置スペースが必要になるという問題があった。更に加工スループットを向上させるために、側辺加工装置を２台設置して四辺工を行う方法では、それぞれの側辺加工装置が大型で高価になる上、両装置間に設ける受渡装置の構造も複雑になり、加工ライン全体が高価になると共に、広い設置スペースが必要になるという問題が生じていた。
【００１０】
この発明は、上記従来の加工方法を採用したときに生ずる上述のような問題点を解決することを課題としており、軽量で設置面積の小さい加工装置で板材の側辺加工を行うことが可能で、板材の寸法が変わったときの段取り作業が容易でかつこれを自動化することも容易に可能で、特に両側辺を同時加工する加工装置を２台設置して板材の四辺加工を行う際の装置構造、及び設置面積を大幅に低減することが可能な加工方法、及び当該加工法を実施するのに好適な加工装置を提供することを課題としている。
【００１１】
【課題を解決するための手段】
上記課題を解決した請求項１の発明に係る硬質脆性板の側辺加工方法は、加工する板材１の側辺と略平行な送り方向（図のＹ方向）に移動可能に設けた工具フレーム１６に、当該板材を挟んで対向する一対の工具６を前記送り方向と直交する幅方向（図のＸ方向）に個別に位置制御可能に装着し、定位置に固定した板材１に設けられた位置決めマーク３を読取って当該板材の両側辺２の位置及び傾きを検出し、検出した側辺の位置に工具６を移動して工具フレーム１６を前記送り方向に移動し、この工具フレームの移動の際に、前記検出された傾きに対応する工具６の幅方向移動を同時に行うことにより、工具６を工具フレーム１６の移動方向に対して傾斜した板材の側辺に沿って移動させるというものである。
【００１２】
請求項２の発明に係る硬質脆性板の側辺加工方法は、加工する板材１を前記幅方向両側に配置した固定台１５に、当該固定台の上面に形成した空気孔に作用する負圧空気で吸引固定し、請求項１の方法で側辺加工を行い、加工後の板材を前記空気孔に作用する加圧空気で浮上させて、前記両側の固定台の間に設けた送り装置１４で送り方向に移送するというものである。
【００１３】
また請求項３の発明に係る硬質脆性板の側辺加工方法は、請求項１又は２の方法で加工した板材を旋回装置１１上に搬送して９０度旋回し、次に請求項１又は２の方法で側辺加工を行うことにより四辺加工を行うというものである。
【００１４】
上記方法を実現する硬質脆性板の側辺加工装置は、機台１３の両側辺部に案内されて当該側辺と平行な送り方向に移動する工具フレーム１６と、当該工具フレームに前記送り方向と直交する幅方向に個別に位置制御可能に装着された一対の工具６と、前記機台１３の上面に設けた両側の固定台１５と、この固定台上面に形成されて当該上面に載置されたガラス板を吸着する負圧空気孔２７と、両側の固定台１５の間に配置されて適時送り方向に移動する送り装置１４と、ガラス板に設けられた位置決めマーク３を検出する検出器４と、前記検出器で検出された板材の傾きに対応する比例関係で工具フレーム１６の送り方向移動量と工具６の幅方向移動量とを制御する制御装置２８とを備えている。
【００１５】
好ましい構造の側辺加工装置は、上記構造を備えた側辺加工装置における両側の固定台１５が、両者の幅方向の間隔を調整自在に設けられている側辺加工装置である。
【００１６】
更に好ましい構造の側辺加工装置は、旋回装置１１を挟んで前記送り方向の上流側と下流側とに上記構造を備えた側辺加工装置が配置され、前記旋回装置は、前記幅方向両側に配置されて前記送り装置１４と同一高さで板材１を搬送する第２送り装置３１、３２と、両側の第２送り装置の間で昇降かつ旋回する旋回台３４とを備えている。
【００１７】
この発明の加工方法を実現するための加工装置は、板材を固定する固定台１５が機台１３上で送り方向に動く必要がなく、板材側辺の傾きを修正するための旋回も必要としないので、テーブルが不要となり、装置重量及び装置コストを大幅に低減できる。従来方法でのテーブルの送り方向移動に替えて、この発明の方法では工具フレーム１６の送り方向移動が必要となるが、工具フレーム１６はテーブルより送り方向寸法が小さいので、機械の設置面積を小さくできる。そして固定された板材の側辺の傾きに対する対応は、工具フレーム１６の送り移動量に合せて工具６を幅方向に微少移動させることによって行われるので、装置構造の簡略化と装置コストの低減が可能になる。
【００１８】
固定台１５を機台の幅方向両側に設けたときは、その間隔を調整可能にすることで、加工する板材１の寸法が変わったときの段取り替えが、両側の固定台１５の間隔を手動又は自動で調整することで可能になり、段取り作業の省力化ないし自動化が図れる。両側の固定台１５の間隔の調整は、両固定台１５を機台１３に設けた幅方向ガイドに摺動自在に設け、左右で逆方向かつ等リードのねじを切った送りねじを両側の固定台に螺合する構造や、左右の垂直軸回りのプーリないしスプロケットに巻回して幅方向に架設したベルトやチェーンに両側の固定台を互い違いに連結することにより、容易に実現できる。自動化するには上記送りねじないしスプロケットをモータで正逆駆動可能にしてやればよい。
【００１９】
更にこの両側の固定台間に送り装置１４を設けることにより、加工前又は加工後の板材を固定台１５から外れた位置まで搬送することができ、従って板材１を装置に搬送する際に板材１を固定台１５から持ち上げたり降ろしたりする動作が不要になる。そのため、旋回装置１１の構造を単純化することができ、この点における装置コストの低減も図ることができる。
【００２０】
【発明の実施の形態】
図１は、この発明の方法を実施する装置の要部を示す斜視図である。この実施例装置は、側辺加工装置を２台設置し、その間に旋回装置１１を配置した構造の、ガラス板の面取加工装置である。側辺加工装置１２ａと１２ｂとは、同一構造である。なお図中のＹ方向は送り方向、Ｘ方向は幅方向、Ｚ方向はＸ及びＺと直交する上下方向である。
【００２１】
側辺加工装置１２ａ、１２ｂは、機台１３と、この機台の上面中央に配置された送り装置１４と、この送り装置の両側に配置された固定台１５と、更にその外側に配置された面取砥石６とを備えている。
【００２２】
左右の面取砥石６は、図２に示すように、機台１３（図１）の左右に設けた工具フレーム１６に形成されたＸ方向のガイド１７に沿って摺動自在に装着されたサドル１８に、高さ調整コラム１９を介してそれぞれ装着されている。サドル１８はそれぞれの送りねじ２０に螺合されており、これらの送りねじ２０は、それぞれのサーボモータ２１に連結されている。高さ調整コラム１９は、それぞれのサドル１８にＺ方向に位置調整かつ固定自在に設けられており、この高さ調整コラムの下端内側にＹ方向の軸回りに回転駆動される上下の砥石６ａ、６ｂと、これを駆動する砥石モータ７、７が装着されている。
【００２３】
工具フレーム１６は、機台１３の側面に形成したＹ方向のガイド３５に摺動自在に案内され、それぞれＹ方向の送りねじ２４に螺合している。Ｙ方向の送りねじ２４は、サーボモータ２５によってほぼ同期して駆動される。なお工具フレームは、左右一体の門形構造のものとしてもよく、この場合には左右のサドル１８が同一の工具フレームにＸ方向に個別に駆動可能に設けられる。
【００２４】
固定台１５の上面には、多数の空気孔が設けられており、これらの空気孔は図示しない切換弁を介して加圧空気源と負圧空気源とに連結されている。図の送り装置１４は、ベルトコンベアでその上面高さは固定台１５の上面より僅かに高くなっており、かつその両端は固定台１５のＹ方向両端から外側の位置にある。ガラス板１が負圧で固定台１５に吸着されたとき、送り装置１４のベルトは、下方に僅かに撓む。固定台１５へのガラス板の吸着が解除されると、送り装置のベルト２６の弾性復帰により、ガラス板１は固定台１５の上面から僅かに持ち上げられる。このときのガラス板の固定台１５上面からの離隔を確実に行わせるために、固定台１５の空気孔２７から加圧空気を噴出する。
【００２５】
図１では省略されているが、図２に示すように、固定台１５に固定したガラス板の位置決めマーク３を読取るためのカメラ４が従来装置と同様に設けられている。工具６をＸ方向に位置決めするサーボモータ２１Ｌ、２１Ｒ及び工具フレーム１６をＹ方向に移動するサーボモータ２５は、制御装置２８でその回転量を制御されており、カメラ４の信号は、画像処理装置２９で処理されて、位置決めマーク３のＸ座標とＹ座標とが制御装置２８に入力されている。
【００２６】
上記構造の側辺加工装置１２ａ、１２ｂの面取砥石６は、図２に示すように、サドル１８に対する高さ調整コラム１９の位置を調整することにより、ガラス板１の厚さに合せてＺ方向に位置調整可能である。そして、工具フレーム１６の移動及びサドル１８の移動により、両側の砥石はＹ方向にほぼ同期して移動可能であり、かつＸ方向に個別に移動可能である。
【００２７】
ガラス板１の側辺２の加工を行うときは、図３に示すように、ガラス板１に印された２個の位置決めマーク３のＸ座標とＹ座標を読取ることにより、両マークの間隔ＷとＹ方向の偏差Ａとを演算して、工具フレーム１６を移動するときに、工具フレームの移動量Ｌとその移動量に対するサドルのＸ方向送り量ＢとがＷ：Ａ＝Ｌ：Ｂの関係になるようにサーボモータ２１及び２５を制御して、面取砥石６を固定台１５に固定されたガラス板１の傾斜した側辺２に沿って移動させる。
【００２８】
旋回装置１１は、図１に示すように、ガラス板の幅方向両側に側辺加工装置の送り装置１４と同様な送り装置３１、３２を備えている。図の例では外側と内側に同期駆動される送り装置３１、３２が設けられており、その内側の送り装置３２は、上流側のものと下流側のものとに分割して設けられている。そして、これらの送り装置３１、３２の間の位置に４本のピン３３の頭でガラス板を支えるようにした旋回台３４が設けられている。旋回台３４は、その下部に図には示されていない旋回駆動装置と昇降駆動装置とを備えており、ピン３３は旋回台３４に立設されている。
【００２９】
次に図１及び２に示した装置によるガラス板の四辺の面取加工について説明する。図示しない供給装置（ベルトコンベアやローラコンベアなど）で加工しようとするガラス板を上流側の側辺加工装置１２ａに供給し、当該装置１２ａの送り装置１４で供給されたガラス板を装置中央部に搬送して、固定台１５の空気孔２７に負圧を供給することにより、搬送されたガラス板１を固定する。次にカメラ４で位置決めマーク３を読取り、検出された側辺上流部の位置に面取砥石６を移動させる。そして、サーボモータ２５を駆動して、工具フレーム１６をＹ方向に走行させ、かつ図３で説明した比例関係でサーボモータ２１を駆動してサドル１８をＸ方向に移動させる。加工が終了したら、面取砥石６を若干外側に退避させ、固定台１５の空気孔から加圧空気を噴出して、側辺加工装置１２ａの送り装置１４と、旋回装置１１の送り装置３１、３２とを同期駆動してガラス板１を旋回装置１１の中心まで搬送する。
【００３０】
旋回装置１１の中心までガラス板が搬送されたら、送り装置１４、３１、３２を停止し、旋回台３４を上昇して９０度旋回したあと下降させる。この動作でガラス板１は旋回装置１１の中心で９０度旋回する。次に旋回装置１１の送り装置３１、３２と下流側側辺加工装置１２ｂの送り装置１４とを同時駆動してガラス板１を下流側の側辺加工装置１２ｂの中心に搬送する。以下、上流側の側辺加工装置１２ａの手順と同様な手順でガラス板の両側辺を加工する。
【００３１】
旋回装置１１でガラス板を旋回する間に上流側の側辺加工装置１２ａの工具フレーム１６は、上流側へ復帰移動し、次のガラス板が供給される。従って、図４に示すように、上流側と下流側の側辺加工装置１２ａ、１２ｂは、ほぼ同期して連続して送られてくる２枚のガラス板の側辺加工を並行して行うこととなり、上流側の側辺加工装置１２ａから旋回装置１１へとガラス板が搬送されるときに、下流側の側辺加工装置１２ｂから四辺を加工したガラス板が、更にその下流側に搬出されることになる。搬出されたガラス板は、適宜な搬送装置（例えばベルトコンベアやローラコンベア）で次の工程へと搬送される。
【図面の簡単な説明】
【図１】この発明による板材の固定及び搬送構造の一実施例を示す斜視図
【図２】この発明による工具の移動構造の一実施例を示す斜視図
【図３】２個の位置決めマークから板材の傾きを演算する説明図
【図４】図１の装置の動作説明図
【図５】従来の側辺加工方法の模式的な説明図
【図６】硬質脆性板の円板砥石による側辺面取加工の説明図
【符号の説明】
１ ガラス板（板材）
２ 側辺
３ 位置決めマーク
６ 砥石
11 旋回装置
13 機台
14 送り装置
15 固定台
16 工具フレーム
27 空気孔
28 制御装置
31 送り装置
32 送り装置
34 旋回台[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for chamfering a side of a glass plate, a ceramic plate, or other hard brittle plate, which is a substrate of a display panel, and an apparatus used for the processing.
[0002]
[Prior art]
When manufacturing a glass substrate for a display panel, chamfering to scrape off the sharp edges remaining on the cut edge of the glass plate cut to a predetermined size, rounding to make the section an arc, and other external processing Necessary. In this type of processing, both sides are generally processed simultaneously by passing the glass plate between a pair of left and right grinding wheels arranged in accordance with the width of the glass plate to be processed.
[0003]
FIG. 5 shows a conventional side processing method using chamfering as an example. First, a fixing base 36 slightly narrower than the glass plate 1 to be processed is fixed on a table (not shown), and the glass plate 1 is fixed on the fixing base 36. The both sides 2 of the fixed glass plate protrude from the fixing table 36 and are fixed in a state of floating from the table. Since the glass plate 1 is provided with positioning marks 3 at two predetermined positions, the positioning marks 3 are read by the camera 4 to detect the position and inclination of the side 2 of the glass plate. Then, the pair of left and right grindstone groups 5 arranged facing the width direction of the glass plate 1 are moved in the X direction (the width direction of the glass plate) in the drawing so as to match the detected position of the side. Further, the table on which the glass plate is placed is rotated in the direction C (rotation direction around the vertical axis) in the figure to correct the inclination of the glass plate 1. Then, the table is sent in the Y direction (horizontal direction orthogonal to X) in the figure to chamfer both sides 2 and 2 of the glass plate at the same time.
[0004]
The chamfering grindstone 6 in the figure is a set of an upper grindstone 6a and a lower grindstone 6b that rotate about an axis substantially parallel to the side 2 of the glass plate, and the upper grindstone 6a and the lower grindstone 6b are: Each is provided with a plurality of disc grindstones fixed at intervals in the axial direction, and the upper and lower disc grindstones are alternately inserted between each other, so that the side 2 of the glass plate 1 as shown in FIG. The upper corner 2a and the lower corner 2b are chamfered simultaneously. In addition, the rotation direction of the grindstones 6a and 6b is a direction which cuts from the outer side of the surface of the glass plate 1 to an end surface side, as shown by an arrow in the figure. Moreover, the rotating shaft of each grindstone 6a, 6b is slightly inclined with respect to the feeding direction Y of the glass plate, and the cutting amount of each disc grindstone is set by this inclination angle.
[0005]
In order to perform the side processing of the glass plate 1 by the conventional method as described above, a processing apparatus having the following structure is required. That is, the table on which the glass plate is placed and fixed must be movable in the Y direction in the figure and can be controlled in the C direction. The left and right grindstone groups 5 must be mounted so that their positions can be adjusted in the Z direction (vertical direction) in accordance with the thickness of the glass plate to be processed, and the left and right grindstone groups must be independently positionable.
[0006]
And in order to perform a highly accurate process, the precision and rigidity of a processing apparatus are required. The conventional apparatus for performing side processing by the above method is a machine base that is installed on the floor of a factory, a table that can be moved in the Y direction and the C direction on the machine base, and a right and left chamfering grindstone group 5 that is normally supported. Had a gate-shaped frame, each of which had to be sufficiently rigid and accurate.
[0007]
The side processing apparatus having the above-described structure can process four sides of a glass plate on the same machine stand. That is, after processing the opposite sides on the opposite side by the above method, the chamfering grindstone group 5 is opened outward and retracted, then the table is returned and further rotated 90 degrees in the C direction. And the chamfering process of the four sides of the glass plate 1 can be performed by positioning the chamfering grindstone 6 in the X direction according to the positions of the new sides and moving the table in the Y direction.
[0008]
However, in the above method, it takes time to return and turn the table and to retract and reposition the chamfering grindstone group 5, so that there is a problem that the tact time becomes long. Therefore, when processing a large number of glass plates having the same dimensions, a method of performing four-side processing by installing two devices having the above structure in the Y direction is employed. This method requires a delivery device that performs an operation of lifting the glass plate from the table of the upstream device and lowering the glass plate onto the table of the downstream device. The 90 degree rotation of the glass plate required when processing the four sides is performed by the table rotation of the downstream apparatus.
[0009]
[Problems to be solved by the invention]
The conventional side processing apparatus that performs chamfering by the above-described conventional method needs to provide a table on which a plate material (glass plate) to be processed can be moved and positioned in the Y direction and the C direction. There is a problem that the apparatus becomes large and the apparatus cost increases. In addition, each time the size of the glass plate changes, it is necessary to replace the fixing table on the table in accordance with the size of the glass plate, and there is a problem that it takes time for the setup work. Further, in the conventional apparatus, since the table moves, there is a problem that the area of the machine base that supports the table becomes large and a large installation space is required. Furthermore, in order to further improve the processing throughput, in the method of performing the quadrilateral work by installing two side processing devices, each side processing device becomes large and expensive, and the structure of the delivery device provided between the two devices is also increased. In addition to the complexity, the entire processing line is expensive, and a large installation space is required.
[0010]
An object of the present invention is to solve the above-mentioned problems that occur when the above-described conventional processing method is adopted, and it is possible to perform side processing of a plate material with a light processing apparatus having a small installation area. , It is easy to set up when the size of the plate changes, and it is easy to automate this, especially when two sides of the processing machine are installed at the same time to process the sides of the plate. It is an object of the present invention to provide a processing method capable of significantly reducing the structure and the installation area, and a processing apparatus suitable for performing the processing method.
[0011]
[Means for Solving the Problems]
In the method of processing a side of a hard brittle plate according to the invention of claim 1 which solves the above-mentioned problem, a tool frame 16 provided so as to be movable in a feed direction (Y direction in the figure) substantially parallel to the side of the plate 1 to be processed. In addition, a pair of tools 6 that are opposed to each other with the plate material interposed therebetween are individually mounted in the width direction (X direction in the figure) perpendicular to the feed direction so as to be position-controllable, and are positioned on the plate material 1 fixed at a fixed position. The mark 3 is read to detect the position and inclination of both sides 2 of the plate, the tool 6 is moved to the detected side position, the tool frame 16 is moved in the feed direction, and the tool frame is moved. In addition, by simultaneously moving the tool 6 in the width direction corresponding to the detected inclination, the tool 6 is moved along the side of the plate material inclined with respect to the moving direction of the tool frame 16.
[0012]
The method for processing a side of a hard brittle plate according to a second aspect of the present invention is the negative pressure air acting on the air holes formed on the upper surface of the fixed base 15 in which the plate material 1 to be processed is arranged on both sides in the width direction. The side plate is processed by the method of claim 1, the processed plate material is floated by pressurized air acting on the air holes, and the feeding device 14 provided between the fixing tables on both sides is used. It moves in the feed direction.
[0013]
Further, in the method of processing a side of a hard and brittle plate according to the invention of claim 3, the plate material processed by the method of claim 1 or 2 is conveyed onto the turning device 11 and turned 90 degrees, and then turned to claim 1 or 2. The four sides are processed by performing the side processing by this method.
[0014]
Sides machining apparatus of the hard matter brittle plate you realize the above method, the tool frame 16 which is guided by the both side portions of the machine base 13 moves to the side edges and parallel to the feed direction, the feed to the tool frame A pair of tools 6 mounted so as to be individually position-controllable in a width direction orthogonal to the direction, fixed bases 15 on both sides provided on the upper surface of the machine base 13, and formed on the upper surface of the fixed base and mounted on the upper surface. A negative pressure air hole 27 that adsorbs the placed glass plate, a feeding device 14 that is disposed between the fixed bases 15 on both sides and moves in a timely feeding direction, and a detection that detects the positioning mark 3 provided on the glass plate. And a control device 28 for controlling the amount of movement in the feed direction of the tool frame 16 and the amount of movement in the width direction of the tool 6 in a proportional relationship corresponding to the inclination of the plate material detected by the detector.
[0015]
A side processing apparatus having a preferable structure is a side processing apparatus in which the fixing bases 15 on both sides of the side processing apparatus having the above-described structure are provided so that the distance in the width direction thereof can be adjusted.
[0016]
A side processing device having a more preferable structure is provided with side processing devices having the above-described structure on the upstream side and the downstream side in the feed direction with the swivel device 11 interposed therebetween, and the swivel device is disposed on both sides in the width direction. Second feed devices 31 and 32 that are disposed and transport the plate 1 at the same height as the feed device 14 and a swivel base 34 that moves up and down and swivels between the second feed devices on both sides are provided.
[0017]
In the processing apparatus for realizing the processing method of the present invention, the fixing base 15 for fixing the plate material does not need to move in the feed direction on the machine base 13 and does not need to turn to correct the inclination of the side of the plate material. As a result, a table becomes unnecessary, and the weight of the apparatus and the cost of the apparatus can be greatly reduced. The method of the present invention needs to move in the feed direction of the tool frame 16 instead of moving in the feed direction of the table in the conventional method. However, since the tool frame 16 has a smaller feed direction dimension than the table, the installation area of the machine is reduced. it can. And the correspondence to the inclination of the side of the fixed plate material is performed by slightly moving the tool 6 in the width direction in accordance with the feed movement amount of the tool frame 16, so that the structure of the apparatus is simplified and the cost of the apparatus is reduced. It becomes possible.
[0018]
When provided with solid Jodai 15 on both sides in the width direction of the machine frame is that it allows adjusting the spacing setup change when the dimensions of the plate 1 to be processed is changed, the distance between the opposite sides of the fixing base 15 This can be done by adjusting manually or automatically, and labor saving or automation of the setup work can be achieved. To adjust the distance between the fixing bases 15 on both sides, the fixing bases 15 are slidably provided on a width direction guide provided on the machine base 13, and a feed screw that is threaded in the opposite direction on the left and right sides and with equal leads is fixed on both sides. This can be easily realized by a structure that is screwed to the base, or by alternately connecting the fixing bases on both sides to a belt or chain that is wound around pulleys or sprockets around the left and right vertical axes and is installed in the width direction. In order to automate, the feed screw or sprocket can be driven forward and backward by a motor.
[0019]
Further, by providing the feeding device 14 between the fixed bases on both sides, the plate material before or after processing can be transported to a position disengaged from the fixed base 15, so that the plate material 1 is transported when the plate material 1 is transported to the apparatus. The operation of lifting or lowering the battery from the fixed base 15 becomes unnecessary. Therefore, it is possible to simplify the structure of the swivel device 11, it can also be achieved a reduction in apparatus cost at this point.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a perspective view showing a main part of an apparatus for carrying out the method of the present invention . The example device has established two side edges processing apparatus, the structure in which the turning device 11 therebetween, a chamfering apparatus for a glass plate. The side processing devices 12a and 12b have the same structure. In the figure, the Y direction is the feed direction, the X direction is the width direction, and the Z direction is the vertical direction orthogonal to X and Z.
[0021]
The side processing devices 12a and 12b are a machine base 13, a feeding device 14 arranged at the center of the upper surface of the machine base, a fixing table 15 arranged on both sides of the feeding device, and further arranged on the outside thereof. A chamfering grindstone 6 is provided.
[0022]
As shown in FIG. 2, the left and right chamfering grindstones 6 are saddles that are slidably mounted along guides 17 in the X direction formed on tool frames 16 provided on the left and right of the machine base 13 (FIG. 1). 18 are respectively mounted via height adjustment columns 19. The saddles 18 are screwed into the respective feed screws 20, and these feed screws 20 are connected to the respective servo motors 21. The height adjustment columns 19 are provided on the respective saddles 18 so as to be position-adjustable and fixed in the Z direction, and upper and lower grindstones 6a that are rotationally driven around the axis in the Y direction inside the lower end of the height adjustment column. 6b and grindstone motors 7 and 7 for driving the same are mounted.
[0023]
The tool frame 16 is slidably guided by a guide 35 in the Y direction formed on the side surface of the machine base 13, and is screwed into a feed screw 24 in the Y direction. The feed screw 24 in the Y direction is driven almost synchronously by the servo motor 25. The left and right saddles 18 may be individually driven in the X direction on the same tool frame.
[0024]
A large number of air holes are provided on the upper surface of the fixed base 15, and these air holes are connected to a pressurized air source and a negative pressure air source via a switching valve (not shown). The feeding device 14 shown in the figure is a belt conveyor and the height of the upper surface thereof is slightly higher than the upper surface of the fixing table 15, and both ends thereof are located on the outer side from both ends of the fixing table 15 in the Y direction. When the glass plate 1 is attracted to the fixed base 15 with a negative pressure, the belt of the feeding device 14 is slightly bent downward. When the adsorption of the glass plate to the fixing table 15 is released, the glass plate 1 is slightly lifted from the upper surface of the fixing table 15 by the elastic return of the belt 26 of the feeding device. At this time, in order to ensure separation of the glass plate from the upper surface of the fixed base 15, pressurized air is ejected from the air holes 27 of the fixed base 15.
[0025]
Although omitted in FIG. 1, as shown in FIG. 2, a camera 4 for reading the positioning mark 3 of the glass plate fixed to the fixed base 15 is provided in the same manner as the conventional apparatus. The servo motors 21L and 21R for positioning the tool 6 in the X direction and the servo motor 25 for moving the tool frame 16 in the Y direction are controlled by the control device 28, and the signal from the camera 4 is an image processing device. 29, the X coordinate and the Y coordinate of the positioning mark 3 are input to the control device 28.
[0026]
As shown in FIG. 2, the chamfering grindstone 6 of the side processing devices 12 a and 12 b having the above-described structure adjusts the position of the height adjustment column 19 with respect to the saddle 18 to match the thickness of the glass plate 1. The position can be adjusted in the direction. Then, by the movement of the tool frame 16 and the movement of the saddle 18, the grindstones on both sides can move substantially in synchronization with the Y direction and can move individually in the X direction.
[0027]
When processing the side 2 of the glass plate 1, as shown in FIG. 3, by reading the X and Y coordinates of the two positioning marks 3 marked on the glass plate 1, the distance W between the two marks is determined. When the tool frame 16 is moved by calculating Y and the deviation A in the Y direction, the movement amount L of the tool frame and the X-direction feed amount B of the saddle with respect to the movement amount are in a relationship of W: A = L: B. The servo motors 21 and 25 are controlled so that the chamfering grindstone 6 is moved along the inclined side 2 of the glass plate 1 fixed to the fixed base 15.
[0028]
As shown in FIG. 1, the turning device 11 includes feeding devices 31 and 32 similar to the feeding device 14 of the side processing device on both sides of the glass plate in the width direction. In the illustrated example, feeding devices 31 and 32 that are driven synchronously on the outside and the inside are provided, and the inside feeding device 32 is divided into an upstream device and a downstream device. A swivel base 34 is provided at a position between the feeding devices 31 and 32 so that the glass plate is supported by the heads of the four pins 33. The swivel base 34 is provided with a swivel drive device and a lift drive device not shown in the drawing at the lower part thereof, and the pins 33 are erected on the swivel stand 34.
[0029]
Next, chamfering of the four sides of the glass plate by the apparatus shown in FIGS. 1 and 2 will be described. A glass plate to be processed by a supply device (not shown) (belt conveyor, roller conveyor, etc.) is supplied to the upstream side processing device 12a, and the glass plate supplied by the feeding device 14 of the device 12a is supplied to the central portion of the device. The conveyed glass plate 1 is fixed by conveying and supplying negative pressure to the air holes 27 of the fixing table 15. Next, the positioning mark 3 is read by the camera 4, and the chamfering grindstone 6 is moved to the detected position on the upstream side. Then, the servo motor 25 is driven to cause the tool frame 16 to travel in the Y direction, and the servo motor 21 is driven in the proportional relationship described in FIG. 3 to move the saddle 18 in the X direction. When the processing is completed, the chamfering grindstone 6 is slightly retracted to the outside, the pressurized air is ejected from the air holes of the fixed base 15, and the feeding device 14 of the side processing device 12a, the feeding device 31 of the swiveling device 11, 32 is synchronously driven to transport the glass plate 1 to the center of the turning device 11.
[0030]
When the glass plate is conveyed to the center of the turning device 11, the feeding devices 14, 31, and 32 are stopped, the turning table 34 is raised, turned 90 degrees, and then lowered. By this operation, the glass plate 1 turns 90 degrees at the center of the turning device 11. Next, the feeding devices 31 and 32 of the turning device 11 and the feeding device 14 of the downstream side processing apparatus 12b are simultaneously driven to convey the glass plate 1 to the center of the downstream side processing apparatus 12b. Thereafter, both sides of the glass plate are processed in the same procedure as that of the upstream side processing apparatus 12a.
[0031]
The tool frame 16 of the side processing device 12a on the upstream side returns to the upstream side while the glass plate is swung by the swiveling device 11, and the next glass plate is supplied. Therefore, as shown in FIG. 4, the side processing devices 12a and 12b on the upstream side and the downstream side perform side processing of two glass plates that are sent continuously in a substantially synchronized manner in parallel. Thus, when the glass plate is conveyed from the upstream side processing device 12a to the turning device 11, the glass plate having four sides processed from the downstream side processing device 12b is further carried to the downstream side. It will be. The unloaded glass plate is conveyed to the next step by an appropriate conveying device (for example, a belt conveyor or a roller conveyor).
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a plate fixing and conveying structure according to the present invention. FIG. 2 is a perspective view showing an embodiment of a tool moving structure according to the present invention. FIG. 4 is a diagram for explaining the operation of the apparatus shown in FIG. 1. FIG. 5 is a diagram for explaining a conventional side processing method. FIG. 6 is a diagram showing a side of a hard brittle plate by a disc grindstone. Illustration of chamfering [Explanation of symbols]
1 Glass plate (plate material)
2 Side 3 Positioning mark 6 Grinding wheel
11 Swivel device
13 units
14 Feeder
15 Fixed base
16 Tool frame
27 Air hole
28 Control unit
31 Feeder
32 Feeder
34 swivel

Claims (3)

工具(6)として加工する板材(1)の側辺と略平行な軸回りに回転する上砥石６ａと下砥石６ｂとを一組として当該上砥石６ａ及び下砥石６ｂの複数枚の円板砥石を互い違いに相互の間に入り込ませることにより、当該側辺(2)の上角(2a)と下角(2b)とを同時に面取りする面取砥石を用い、前記側辺と略平行な送り方向に移動可能に設けた工具フレーム(16)に、当該板材を挟んで対向する左右一対の前記工具(6)を高さ調整コラム(19)を介して前記送り方向と直交する幅方向に個別に位置制御可能に装着し、定位置に固定した板材(1)に設けられた２個の位置決めマーク(3)の間隔Ｗと前記送り方向の偏差Ａとを読取って当該板材の両側辺(2)の位置及び傾きを検出し、検出した側辺の位置に工具(6)を移動して工具フレーム(16)を前記送り方向に移動し、この工具フレームの移動の際に、当該工具フレームの移動量Ｌとその移動量に対する工具(6)の前記幅方向送り量ＢとがＷ：Ａ＝Ｌ：Ｂの関係になるように工具(6)の幅方向移動を同時に行うことにより、工具(6)を工具フレーム(16)の移動方向に対して傾斜した板材の側辺に沿って移動させることにより当該板材の両側辺を同時加工することを特徴とする、硬質脆性板の側辺加工方法。  A plurality of disc grindstones of the upper grindstone 6a and the lower grindstone 6b as a set of the upper grindstone 6a and the lower grindstone 6b rotating about an axis substantially parallel to the side of the plate material (1) to be processed as the tool (6). By using a chamfering grindstone that chamfers the upper corner (2a) and the lower corner (2b) of the side (2) at the same time in a feed direction that is substantially parallel to the side. A pair of left and right tools (6) opposed to each other with the plate member interposed therebetween are individually positioned in a width direction perpendicular to the feed direction via a height adjustment column (19) on a tool frame (16) provided so as to be movable. The distance W between the two positioning marks (3) provided on the plate (1) that is mounted in a controllable manner and fixed at a fixed position and the deviation A in the feed direction are read, and the both sides (2) of the plate are read. The position and inclination are detected, the tool (6) is moved to the position of the detected side, and the tool frame (16) is moved in the feed direction. Tool 6 so that the movement amount L of the tool frame and the feed amount B in the width direction of the tool 6 with respect to the movement amount have a relationship of W: A = L: B. Simultaneously moving both sides of the plate by moving the tool (6) along the sides of the plate inclined with respect to the direction of movement of the tool frame (16). A method for processing a side of a hard brittle plate. 加工する板材(1)を前記幅方向両側に配置した固定台(15)に、当該固定台の上面に形成した空気孔に作用する負圧空気で吸引固定し、請求項１の方法で側辺加工を行い、加工後の板材を前記空気孔に作用する加圧空気で浮上させて、前記両側の固定台の間に設けた送り装置(14)で前記送り方向に移送することを特徴とする、硬質脆性板の側辺加工方法。  The plate material (1) to be processed is sucked and fixed to the fixing bases (15) arranged on both sides in the width direction by negative pressure air acting on the air holes formed on the upper surface of the fixing base, and the sides are processed by the method of claim 1. Processing is performed, and the processed plate material is levitated with pressurized air acting on the air holes, and is transferred in the feeding direction by a feeding device (14) provided between the fixed bases on both sides. Side processing method for hard and brittle plates. 請求項１又は２の方法で加工した板材を旋回装置(11)上に搬送して９０度旋回し、次に請求項１又は２の方法で側辺加工を行うことにより四辺加工を行う、硬質脆性板の側辺加工方法。  A plate material processed by the method of claim 1 or 2 is conveyed on a turning device (11) and turned 90 degrees, and then the side processing is performed by the method of claim 1 or 2 to perform four-side processing. Side processing method for brittle plates.
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