JP3705699B2

JP3705699B2 - Thin plate holding and conveying method

Info

Publication number: JP3705699B2
Application number: JP21838898A
Authority: JP
Inventors: 健司上川; 国男宮脇; 東久安; 勝恒田宮
Original assignee: Hitachi Zosen Corp
Current assignee: Hitachi Zosen Corp
Priority date: 1998-08-03
Filing date: 1998-08-03
Publication date: 2005-10-12
Anticipated expiration: 2018-08-03
Also published as: JP2000052158A

Description

【０００１】
【発明の属する技術分野】
本発明は、例えば大型に形成されたガラス板などの薄板を保持して所定の場所まで搬送するための薄板の保持搬送方法に関する。
【０００２】
【従来の技術】
近年、ガラス板は肉薄に加工して、例えば液晶パネル基板やカラーフィルタ、あるいはＰＤＰ（プラズマディスプレイパネル）など、多様な分野で用いられている。
【０００３】
上記のような用途に用いられるガラス板は、例えば所定の大きさの矩形に加工された後、塵芥除去のために予め水洗浄された下定盤に、作業者によって載置される。その後、下定盤と上定盤の運動（回転、移動）により表面が研磨加工される。この際、ガラス板は清浄性を維持するために同時に水洗浄が行われる。
【０００４】
そして、研磨加工されたガラス板は、最終的に水洗浄された後、作業者によって持ち上げられて、次の作業を行う所定の場所まで、人的あるいは搬送機により運ばれる。この際、ガラス板は自重により撓むため、持ち上げる際や搬送の際には、損傷しないよう慎重に行う必要があるとともに機械振動や搬送時の加速度の変化にも十分に配慮しなければならない。
【０００５】
【発明が解決しようとする課題】
上記のようにガラス板は、所定の大きさに形成された後は、作業者によって下定盤に移し替えられる。あるいは、ガラス板は、研磨加工後に下定盤から作業者によって取り外される。
【０００６】
ところで近年、ガラス板はますます大型化（例えば550×650×0.7mm）している。このような肉薄で大型のガラス板を損傷させることなく搬送するのは難しい。また、研磨加工後のガラス板は、水濡れ状態にあって下定盤に密着している。このようなガラス板を下定盤から取り外す作業は、熟練者であっても難しい。
【０００７】
そこで、本発明は、上記課題を解決し得るガラス板の保持搬送方法の提供を目的とする。
【０００８】
【課題を解決するための手段】
本発明における課題解決手段は、薄板を搬送経路に沿って搬送するための搬送台に昇降自在に設けた保持部材を、前記搬送経路に設けた定盤上の載せ板の溝に挿入し、前記保持部材を互いに接近させて薄板の下面を支持させた後、前記保持部材を上昇させて定盤に載置された薄板の縁部を持ち上げ、前記薄板の縁部を持ち上げた際に定盤と薄板との間に生じる隙間から薄板剥離用部材を挿入して定盤から薄板を剥離し、前記保持部材を上昇して薄板を支持し搬送経路に沿って搬送するものである。
【０００９】
上記構成において、搬送経路に設けた定盤に載置された薄板の縁部を、薄板を前記搬送経路に沿って搬送するための搬送台に対して昇降自在に設けた保持部材で持ち上げ、薄板の縁部を持ち上げた際に定盤と薄板との間に生じる隙間から薄板剥離用部材を挿入することで定盤から薄板を剥離して、確実かつ容易に、薄板を損傷させることなく安全に搬送する。
【００１０】
また請求項２記載の課題解決手段は、定盤の搬入側に配置した搬入コンベヤの上方で保持部材で薄板を保持するとともに薄板剥離用部材で薄板をその下面で支持した状態で薄板を定盤に搬送し、定盤の上方で保持部材で薄板を保持するとともに薄板剥離用部材で薄板をその下面で支持した状態で薄板を定盤の搬出側に配置した搬出コンベヤに搬送するものである。
【００１１】
上記構成において、定盤の搬入側に配置した搬入コンベヤの上方で保持部材で薄板を保持するとともに支持体兼用の薄板剥離用部材で薄板をその下面で支持した状態で薄板を定盤に搬送し、定盤の上方で保持部材で薄板を保持するとともに薄板剥離用部材で薄板をその下面で支持した状態で薄板を定盤の搬出側に配置した搬出コンベヤに搬送する。
【００１２】
【発明の実施の形態】
以下、本発明の実施の形態を図１〜図３に基づいて説明する。本発明の実施の形態に係るガラス板（薄板の一例で、例えば矩形に形成される）１の保持搬送装置２は、搬送経路３の途中に配置した研磨装置４の下定盤５における載せ板６に対し、ガラス板１を搬入して載置し、また剥離して搬出するためのもので、下定盤５の搬入側７に搬入コンベヤ８が配置され、下定盤５の搬出側９に搬出コンベヤ１０が配置されている。
【００１３】
また、前記下定盤５の上方に、ガラス板１を搬送経路３に沿って搬送するための搬送台１１が図示しない移動装置によって所定区間、すなわち搬入コンベヤ８から搬出コンベヤ１０の上方に亘って水平方向に移動自在に設けられ、また、搬送台１１は、図示しない昇降装置によって下定盤５に対して昇降自在に構成され、さらに搬送台１１は、位置検出器の検出信号で駆動するストッパによって、下定盤５の上方位置で搬入側７および搬出側９への移動を阻止されるよう構成されている。
【００１４】
また、ガラス板１の縁部を保持して下定盤５の載せ板６に対して載置し持ち上げるための保持部材１２Ａ，１２Ｂが、前記搬送台１１に位置調節手段１３を介して昇降自在および水平方向（搬送経路３方向）に接近離間自在に取付けられている。なお前記保持部材１２Ａ，１２Ｂは、搬送台１１の両側に複数個（例えば３個）対で設けられ、各保持部材１２Ａ，１２Ｂの下端部には、ガラス板１の下面に当接する折曲形成した把持爪１４が形成されている。
【００１５】
なお、前記載せ板６には、保持部材１２Ａ，１２Ｂ同士の前後方向の離間幅に一致する所定間隔置きに溝３６が形成され、各溝３６は、保持部材１２Ａ，１２Ｂの把持爪１４の厚みより深く、把持爪１４の長さより大きく、かつ２倍程度の幅に形成されている。
【００１６】
前記位置調節手段１３は、搬送台１１の上面に設けられた支持部材１５と、この支持部材１５の端部に昇降自在に取付けられた昇降片１６と、支持部材１５をガラス板１の幅方向（搬送経路３方向）に沿って案内するためのレール１７と、前記支持部材１５をレール１７に沿って移動させるための移動装置（図示せず）および前記昇降片１６を支持部材１５に沿って昇降させるためのシリンダ装置とから構成されている。
【００１７】
また、ガラス板１の端部が前記保持部材１２Ａ，１２Ｂで下定盤５に対して持ち上げられた状態で、下定盤５とガラス板１との間に介入するガラス板剥離用の複数個のローラー１９，２０からなるローラー群２１，２２（ガラス板１剥離用部材の一例）が搬送台１１の両側に設けられ、各ローラー群２１，２２のローラー１９，２０は中心に移動杆２３Ａ，２３Ｂが貫通され、各移動杆２３Ａ，２３Ｂの端部は軸受け２４に支持されている。
【００１８】
そして、各ローラー群２１，２２を下定盤５の載せ板６に沿って搬送経路３（水平方向）に接近離間移動させるための移動装置２５が搬送台１１に設けられ、この移動装置２５は、搬送台１１の前後面に搬送経路３に沿って設けられた移動用レール２６と、各移動用レール２６に摺動自在に嵌合する摺動部材２７と、各摺動部材２７に取付けられて上下方向に伸縮するとともに前記軸受け２４にロッド２８が取付けられた昇降用シリンダ装置２９と、各昇降用シリンダ装置２９の上部にモータ台３０を介して取付けられた移動用モータ３１と、各移動用モータ３１の出力軸３２に取付けられたピニオン３３と、このピニオン３３に噛合するとともに搬送台１１の上面に搬送経路３に沿って配置されたラック３４とから構成されている。
【００１９】
上記構成の保持搬送装置２におけるガラス板１の保持搬送方法を説明する。所定の大きさおよび形状に形成されたガラス板１は、搬入コンベヤ８に載せられて下定盤５の搬入側まで搬送されて停止する。そうすると、移動装置の駆動によって、搬送台１１が搬入コンベヤ８、すなわちガラス板１の上方まで水平方向に沿って移動する。そして、ガラス板１の上方に到着した時点で停止して、昇降装置の駆動によって下降し、位置調節手段１３のシリンダ装置の駆動により昇降片１６が下降して保持部材１２Ａ，１２Ｂの把持爪１４が搬入コンベヤ８の搬送面まで下降し、移動装置の駆動により支持部材１５がレール１７に沿って移動して互いに接近し、把持爪１４がガラス板１を下面で支持する。このようにした状態で、シリンダ装置を駆動して保持部材１２Ａ，１２Ｂを上昇させるとともに昇降装置を駆動することで搬送台１１を上昇させてガラス板１を搬入コンベヤ８から持ち上げる。この状態で移動装置を駆動し、搬送台１１を搬送方向３に水平方向に移動し、下定盤５の載せ板６の真上にガラス板１が位置すると、位置検出器がこれを検出してストッパによって、搬送台１１が搬入側７および搬出側９への移動を阻止される。
【００２０】
次に、昇降装置の駆動によって搬送台１１が下降し、また保持部材１２Ａ，１２Ｂもこれに伴って下降し、位置調節手段１３のシリンダ装置の駆動により昇降片１６がさらに下降して、保持部材１２Ａ，１２Ｂの把持爪１４が載せ板６の各溝３６に上方から嵌合し、ガラス板１が載せ板６に載置される。このとき、ガラス板１は、中央から外側に広がるように載せ板６との接触面積を増すため、水濡れ状態にある載せ板６とガラス板１との間に空気層ができず、密着する。
【００２１】
そして、ガラス板１が載せ板６に載置された時点で、両側の保持部材１２Ａ，１２Ｂを離間させる方向に移動させる。このとき、各溝３６の幅は把持爪１４の２倍程度に形成されているので、ガラス板１の両側の縁部から離れ、次に保持部材１２Ａ，１２Ｂが上昇する際に把持爪１４がガラス板１の縁部に当たることはない。
【００２２】
そして、搬送台１１を上昇させ、保持部材１２Ａ，１２Ｂを上昇させ、必要に応じて、搬送台１１を搬入側あるいは搬出側に移動し、上定盤（図示せず）と下定盤５の運動で、載せ板６に載置したガラス板１の表面に研磨加工を行う。また、表面の清浄を維持するよう水洗浄を行う。
【００２３】
次に、研磨加工を終了した後にガラス板１を持ち上げ、所定の場所まで搬送する動作を説明する。まず、下定盤５の載せ板６の真上に搬送台１１を再び位置させ、搬送台１１を下降し、保持部材１２Ａ，１２Ｂをガラス板１の幅方向に最大限に離間させた状態で下降し、その把持爪１４を溝３６に上方から挿入し、次に移動装置を駆動して支持部材１５をレール１７に沿って移動して互いに接近させ、把持爪１４でガラス板１を下面で支持する。このようにした状態で、シリンダ装置を駆動して保持部材１２Ａ，１２Ｂを上昇させると、ガラス板１の縁部が載せ板６から剥離する。
【００２４】
ここで、各昇降用シリンダ装置２９を駆動して各ローラー群２１，２２のローラー１９，２０を載せ板６の端部に当接し、移動用モータ３１を駆動してピニオン３３を回転させると、搬送台１１は水平方向への移動が阻止された状態にあるので、移動用レール２６に沿って昇降用シリンダ装置２９が互いに離間した位置から移動用モータ３１とともに接近する方向に移動し、これに伴って各ローラー群２１，２２のローラー１９，２０同士が載せ板６に沿って移動し、載せ板６とガラス板１の縁部の間の隙間からローラー１９，２０が入り込んでガラス板１を載せ板６から剥離する（持ち上げる）。なお、各ローラー群２１，２２を載せ板６とガラス板１の縁部の隙間から挿入する際、ガラス板１は縁部を持ち上げられる事により湾曲した状態にあるので、保持部材１２Ａ，１２Ｂ同士を少し離間させると、ガラス板１を損傷させることなく円滑にガラス板１を載せ板６から剥離させることができる。
【００２５】
そして、ローラー１９，２０がガラス板１下の所定の位置まで移動したら移動用モータ３１の駆動を停止して保持部材１２Ａ，１２Ｂおよびローラー群２１，２２を同期して上昇させ、ガラス板１を例えば湾曲した状態で保持し、移動装置を駆動して、搬送台１１を搬出側へ移動し、搬送台１１（ガラス板１）が搬出コンベヤ１０の上方に位置したら停止し、保持部材１２Ａ，１２Ｂおよびローラー群２１，２２を同期して下降し、ローラー群２１，２２が搬出コンベヤ１０に上方から当接し、ローラー群２１，２２および保持部材１２Ａ，１２Ｂの下降を停止し、今度は移動用モータ３１を反対方向に駆動してローラー群２１，２２同士を離間させ、載せ板６とガラス板１との間から反対方向に抜き取る。そして、保持部材１２Ａ，１２Ｂ同士をわずかに離間させながらさらに下降させ、ガラス板１が全面的に搬出コンベヤ１０に載置された時点で、保持部材１２Ａ，１２Ｂ同士を離間させ、把持爪１４をガラス板１の縁部から回避して上昇させる。そして、搬出コンベヤ１０の駆動によりガラス板１を所定の場所まで搬送する。なお、このようにガラス板１を搬出コンベヤ１０に搬送する場合、ローラー群２１，２２は、ガラス板１を下面で支持する支持体に兼用されるものである。
【００２６】
以上の動作を繰り返すことにより、順次下定盤５の載せ板６に対してガラス板を搬入し、研磨し、また下定盤５の載せ板６からガラス板１を持ち上げて搬出するものである。
【００２７】
このように、本発明の実施の形態によれば、下定盤５の載せ板６に載置されているガラス板１の縁部を保持部材１２Ａ，１２Ｂの把持爪１４で把持して持ち上げ、載せ板６とガラス板１との間の隙間からローラー１９，２０からなるローラー群２１，２２を載せ板６に沿って移動して挿入し、このローラー１９，２０でガラス板１を載せ板６に対して剥離し、把持爪１４とローラー１９，２０でガラス板１を保持して搬送するようにしたので、ガラス板１が水濡れ状態で下定盤５の載せ板６に載置されていたとしても、また大きなガラス板１であっても、熟練を要することなく、確実にガラス板１を載せ板６から持ち上げ、ガラス板１を損傷させることなく搬送することができる。
【００２８】
なお、上記実施の形態では、ガラス板剥離用部材の一例としてのローラー群２１，２２は、ガラス板１を載せ板６から剥離し、搬出コンベヤ１０側に搬出する際に用いるようにしたがこれに限定されるものではなく、ガラス板１の大きさに応じて使用方法を変更することも勿論可能である。すなわち、ガラス板１が保持部材１２Ａ，１２Ｂのみでは保持不可能な大きさの場合には、載せ板６に対してガラス板１を搬入する際にも、ガラス板１を保持部材１２Ａ，１２Ｂで保持するとともにガラス板１と搬入コンベヤ８の間にローラー群２１，２２を挿入して下面で支持し、この状態で載せ板６に対してガラス板１を損傷させることなく搬入するようにもできる。この場合、ローラー群２１，２２は、ガラス板１を搬入コンベヤ８から下定盤５に搬送する際にその下面で支持する支持体に兼用されるものである。
【００２９】
また、ガラス板１が保持部材１２Ａ，１２Ｂのみで保持可能な大きさの場合、上記実施の形態と同様にしてガラス板１と載せ板６の間にローラー群２１，２２を挿入して載せ板６に沿って移動させることで、ガラス板１を載せ板６に対して単に剥離させるように用いるようにしてもよい。
【００３０】
なお、上記実施の形態では、移動装置２５は、ローラー群２１，２２が載せ板６に対して平行に移動して載せ板６とガラス板１の間に挿入するよう構成したがこれに限定されるものではなく、例えば図４に示すように、移動装置５０として、水平方向に伸縮するとともに昇降自在に構成したシリンダ装置５１を設け、このシリンダ装置５１の両側のロッド５２端部に、昇降自在な軸５３を介して互いに交叉するような杆部材５４を設け、これら各杆部材５４の下端部に複数のローラー５５ａ，５６ａからなるローラ群５５，５６を設けるよう構成してもよい。他の構成は上記実施の形態と同様である。
【００３１】
この実施の形態の場合、載せ板６とガラス板１の隙間から挿入されたローラ群５５，５６は、シリンダ装置５１の駆動によって、載せ板６に沿って円弧を描くようにして移動する。そして、この実施の形態によっても、ガラス板１が水濡れ状態で下定盤５の載せ板６に載置されていたとしても、また大きなガラス板１であっても、熟練を要することなく、確実にガラス板１を載せ板６から持ち上げ、損傷させることなく搬送することができる。
【００３２】
さらに、上記各実施の形態では、薄板としてガラス板１の例を示したが、これに限定されるものではなく、肉薄で大型の合成樹脂性板材あるいは金属製板材なども同様にして搬送することができる。
【００３３】
また、上記各実施の形態では、研磨装置４の下定盤５に対してガラス板１を持ち上げる場合を示したがこれに限定されるものではなく、研磨装置４以外のものであってもガラス板１を持ち上げ、搬送する必要がある場合に適用可能である。
【００３４】
なお、上記実施の形態では、ガラス板１剥離用部材として、ローラー１９，２０からなるローラー群２１，２２の例を示したがこれに限定されるものではなく、ローラー１９，２０からなるローラー群２１，２２の代わりに、楔状の剥離部材を用いてもよく、この場合も上記実施の形態と同様の作用効果を奏し得る。
【００３５】
【発明の効果】
以上の説明から明らかな通り、本発明によれば、載せ板の溝に挿入した保持部材により薄板の縁部を持ち上げ、薄板の縁部を持ち上げた際に定盤と薄板との間に生じる隙間から薄板剥離用部材を挿入することで定盤から薄板を剥離し、保持部材により、確実かつ容易に、薄板を損傷させることなく安全に搬送することができる。
【図面の簡単な説明】
【図１】本発明の実施の第一形態のガラス板の保持搬送装置の全体構成を示す正面図である。
【図２】同じく平面図である。
【図３】同じく側面図である。
【図４】他の実施の形態を示すガラス板の保持搬送装置における移動装置の概略構成を示す正面図である。
【符号の説明】
１ガラス板
２保持搬送装置
３搬送経路
５下定盤
６載せ板
１１搬送台
１２Ａ保持部材
１２Ｂ保持部材
１３位置調節手段
１４把持爪
１５支持部材
１９ローラー
２０ローラー
２１ローラー群
２２ローラー群
２５移動装置
２６移動用レール
２９昇降用シリンダ装置
３１移動用モータ
３３ピニオン
３４ラック[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for holding and transporting a thin plate for holding and transporting a thin plate such as a large glass plate to a predetermined place.
[0002]
[Prior art]
In recent years, glass plates have been processed to be thin and used in various fields such as liquid crystal panel substrates, color filters, and PDPs (plasma display panels).
[0003]
The glass plate used for the above uses is, for example, placed by an operator on a lower surface plate that has been processed into a rectangle of a predetermined size and then washed with water in advance for dust removal. Thereafter, the surface is polished by the movement (rotation and movement) of the lower surface plate and the upper surface plate. At this time, the glass plate is simultaneously washed with water in order to maintain cleanliness.
[0004]
The polished glass plate is finally washed with water and then lifted by an operator and carried by a person or a transporter to a predetermined place where the next operation is performed. At this time, since the glass plate bends due to its own weight, it must be carefully taken so as not to be damaged when being lifted or transported, and sufficient consideration must be given to changes in mechanical vibration and acceleration during transport.
[0005]
[Problems to be solved by the invention]
As described above, after the glass plate is formed in a predetermined size, it is transferred to the lower surface plate by the operator. Alternatively, the glass plate is removed from the lower surface plate by the operator after polishing.
[0006]
By the way, in recent years, glass plates have become increasingly larger (for example, 550 × 650 × 0.7 mm). It is difficult to transport such a thin and large glass plate without damaging it. Moreover, the glass plate after the polishing is wet and is in close contact with the lower surface plate. Even if it is an expert, it is difficult to remove such a glass plate from a lower surface plate.
[0007]
Then, this invention aims at provision of the holding | maintenance conveyance method of the glass plate which can solve the said subject.
[0008]
[Means for Solving the Problems]
The problem-solving means in the present invention is configured to insert a holding member provided in a transport table for transporting a thin plate along a transport path into a groove of a mounting plate on a surface plate provided in the transport path, and After holding the supporting members close to each other to support the lower surface of the thin plate, the holding member is raised to lift the edge of the thin plate placed on the surface plate, and when the edge of the thin plate is lifted, A thin plate peeling member is inserted from a gap generated between the thin plate and the thin plate is peeled from the surface plate, and the holding member is lifted to support the thin plate and transport it along the transport path .
[0009]
In the above configuration, the edge of the thin plate placed on the surface plate provided in the conveyance path is lifted by a holding member provided so as to be movable up and down with respect to the conveyance table for conveying the thin plate along the conveyance path. By peeling the thin plate from the surface plate by inserting a member for peeling the thin plate from the gap generated between the surface plate and the thin plate when the edge of the plate is lifted, it can be done securely and easily without damaging the thin plate Carry.
[0010]
According to a second aspect of the present invention, there is provided a problem solving means comprising: holding a thin plate with a holding member above a carry-in conveyor disposed on the carry-in side of the surface plate; and supporting the thin plate with a lower surface thereof by a thin plate peeling member. The thin plate is held by the holding member above the surface plate, and is transported to a carry-out conveyor arranged on the carry-out side of the platen with the thin plate being supported by the thin plate peeling member on the lower surface thereof.
[0011]
In the above configuration, the thin plate is held by the holding member above the carry-in conveyor arranged on the carry-in side of the surface plate, and the thin plate is transported to the surface plate in a state where the thin plate is supported by the thin plate peeling member that also serves as a support. The thin plate is held by the holding member above the surface plate, and is transported to the carry-out conveyor disposed on the carry-out side of the surface plate while the thin plate is supported on the lower surface by the thin plate peeling member.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. A holding and conveying device 2 for a glass plate (an example of a thin plate, which is formed in a rectangular shape, for example) 1 according to an embodiment of the present invention is a mounting plate 6 on a lower surface plate 5 of a polishing device 4 disposed in the middle of a conveying path 3. On the other hand, the glass plate 1 is carried in, placed, peeled off and carried out. A carry-in conveyor 8 is arranged on the carry-in side 7 of the lower surface plate 5, and a carry-out conveyor 9 on the carry-out side 9 of the lower platen 5. 10 is arranged.
[0013]
Further, above the lower surface plate 5, a transport table 11 for transporting the glass plate 1 along the transport path 3 is horizontally placed in a predetermined section, that is, from the carry-in conveyor 8 to the carry-out conveyor 10 by a moving device (not shown). The transport table 11 is configured to be movable up and down with respect to the lower surface plate 5 by a lifting device (not shown), and the transport table 11 is further driven by a stopper driven by a detection signal of the position detector. The upper surface of the lower surface plate 5 is configured to be prevented from moving to the carry-in side 7 and the carry-out side 9.
[0014]
Further, holding members 12A and 12B for holding and lifting the edge of the glass plate 1 with respect to the mounting plate 6 of the lower surface plate 5 can be moved up and down on the transport table 11 via the position adjusting means 13 and It is attached so as to be able to approach and separate in the horizontal direction (direction of the conveyance path 3). The holding members 12 A and 12 B are provided in pairs (for example, three) on both sides of the transport table 11, and the lower end portions of the holding members 12 A and 12 B are bent to contact the lower surface of the glass plate 1. A gripping claw 14 is formed.
[0015]
In addition, grooves 36 are formed in the mounting plate 6 at predetermined intervals corresponding to the separation width in the front-rear direction of the holding members 12A and 12B, and each groove 36 has a thickness of the gripping claws 14 of the holding members 12A and 12B. It is formed deeper, larger than the length of the gripping claw 14 and about twice as wide.
[0016]
The position adjusting means 13 includes a support member 15 provided on the upper surface of the carriage 11, a lifting piece 16 attached to an end of the support member 15 so as to be movable up and down, and the support member 15 in the width direction of the glass plate 1. A rail 17 for guiding along the (conveyance path 3 direction), a moving device (not shown) for moving the support member 15 along the rail 17, and the elevating piece 16 along the support member 15. And a cylinder device for moving up and down.
[0017]
In addition, a plurality of glass plate peeling rollers that intervene between the lower surface plate 5 and the glass plate 1 in a state where the end portion of the glass plate 1 is lifted with respect to the lower surface plate 5 by the holding members 12A and 12B. The roller groups 21 and 22 (an example of the glass plate 1 peeling member) composed of 19 and 20 are provided on both sides of the transport table 11, and the rollers 19 and 20 of the roller groups 21 and 22 have moving rods 23A and 23B at the center. The end of each moving rod 23A, 23B is supported by a bearing 24.
[0018]
A moving device 25 for moving the roller groups 21 and 22 toward and away from the conveying path 3 (horizontal direction) along the placing plate 6 of the lower surface plate 5 is provided on the conveying table 11. A moving rail 26 provided along the conveying path 3 on the front and rear surfaces of the conveying table 11, a sliding member 27 slidably fitted to each moving rail 26, and attached to each sliding member 27. An elevating cylinder device 29 that extends in the vertical direction and has a rod 28 attached to the bearing 24; a moving motor 31 that is attached to the upper portion of each elevating cylinder device 29 via a motor base 30; A pinion 33 attached to the output shaft 32 of the motor 31 and a rack 34 that meshes with the pinion 33 and is disposed on the upper surface of the transport table 11 along the transport path 3.
[0019]
A method for holding and conveying the glass plate 1 in the holding and conveying apparatus 2 having the above configuration will be described. The glass plate 1 formed in a predetermined size and shape is placed on the carry-in conveyor 8 and conveyed to the carry-in side of the lower surface plate 5 and stopped. If it does so, the conveyance stand 11 will move along the horizontal direction to the upper part of the carrying-in conveyor 8, ie, the glass plate 1, by the drive of a moving apparatus. Then, it stops when it reaches above the glass plate 1 and descends by driving the lifting device, and the lifting piece 16 descends by driving the cylinder device of the position adjusting means 13 and the gripping claws 14 of the holding members 12A, 12B. Descends to the conveying surface of the carry-in conveyor 8, the support member 15 moves along the rail 17 by driving the moving device, and approaches the mutual, and the gripping claws 14 support the glass plate 1 on the lower surface. In this state, the cylinder device is driven to raise the holding members 12 A and 12 B and the lifting device is driven to raise the transport table 11 and lift the glass plate 1 from the carry-in conveyor 8. In this state, the moving device is driven to move the transport table 11 in the horizontal direction in the transport direction 3, and when the glass plate 1 is positioned directly above the mounting plate 6 of the lower surface plate 5, the position detector detects this. The stopper 11 prevents the carriage 11 from moving to the carry-in side 7 and the carry-out side 9.
[0020]
Next, the carriage 11 is lowered by the driving of the lifting device, and the holding members 12A and 12B are also lowered accordingly, and the lifting piece 16 is further lowered by the driving of the cylinder device of the position adjusting means 13, thereby holding the holding member. The gripping claws 14 of 12A and 12B are fitted into the grooves 36 of the mounting plate 6 from above, and the glass plate 1 is mounted on the mounting plate 6. At this time, since the glass plate 1 increases the contact area with the mounting plate 6 so as to spread outward from the center, an air layer is not formed between the mounting plate 6 and the glass plate 1 which are in a wet state, and is closely attached. .
[0021]
And when the glass plate 1 is mounted in the mounting plate 6, it moves to the direction which separates holding member 12A, 12B of both sides. At this time, since the width of each groove 36 is about twice that of the gripping claws 14, the gripping claws 14 are separated from the edges on both sides of the glass plate 1 and then the holding members 12 A and 12 B are lifted. It does not hit the edge of the glass plate 1.
[0022]
And the conveyance stand 11 is raised, holding member 12A, 12B is raised, the conveyance stand 11 is moved to the carrying-in side or the carrying-out side as needed, and the movement of the upper surface plate (not shown) and the lower surface plate 5 is carried out. Then, the surface of the glass plate 1 placed on the placing plate 6 is polished. In addition, water cleaning is performed to maintain the surface cleanness.
[0023]
Next, an operation of lifting the glass plate 1 after the polishing process and transporting it to a predetermined place will be described. First, the transport table 11 is positioned again immediately above the mounting plate 6 of the lower surface plate 5, the transport table 11 is lowered, and the holding members 12 A and 12 B are lowered in the state of being maximally separated in the width direction of the glass plate 1. Then, the gripping claws 14 are inserted into the grooves 36 from above, and then the moving device is driven to move the support members 15 along the rails 17 so as to approach each other. The gripping claws 14 support the glass plate 1 on the lower surface. To do. In this state, when the cylinder device is driven to raise the holding members 12 A and 12 B, the edge of the glass plate 1 is peeled off from the mounting plate 6.
[0024]
Here, when each lifting cylinder device 29 is driven to bring the rollers 19 and 20 of each roller group 21 and 22 into contact with the end of the mounting plate 6, and the pinion 33 is rotated by driving the moving motor 31. Since the carriage 11 is prevented from moving in the horizontal direction, the lifting cylinder device 29 moves along the moving rail 26 from a position away from each other in a direction approaching with the moving motor 31. Accordingly, the rollers 19 and 20 of each of the roller groups 21 and 22 move along the mounting plate 6, and the rollers 19 and 20 enter from the gap between the mounting plate 6 and the edge of the glass plate 1 to move the glass plate 1. Peel from the mounting plate 6 (lift). In addition, when inserting each roller group 21 and 22 from the clearance gap between the mounting plate 6 and the edge of the glass plate 1, since the glass plate 1 is in the curved state by raising an edge, holding members 12A and 12B are mutually Is slightly separated, the glass plate 1 can be smoothly peeled from the mounting plate 6 without damaging the glass plate 1.
[0025]
And if the rollers 19 and 20 move to the predetermined position under the glass plate 1, the drive of the motor 31 for movement will be stopped, the holding members 12A and 12B, and the roller groups 21 and 22 will be raised synchronously, and the glass plate 1 will be moved. For example, it holds in a curved state, drives the moving device, moves the transport table 11 to the carry-out side, stops when the transport table 11 (glass plate 1) is positioned above the carry-out conveyor 10, and holds the holding members 12A and 12B. And the roller groups 21 and 22 are lowered synchronously, the roller groups 21 and 22 come into contact with the carry-out conveyor 10 from above, and the lowering of the roller groups 21 and 22 and the holding members 12A and 12B is stopped. 31 is driven in the opposite direction to separate the roller groups 21 and 22 from each other, and is extracted from between the placing plate 6 and the glass plate 1 in the opposite direction. Then, the holding members 12A, 12B are further lowered while being slightly separated from each other, and when the glass plate 1 is entirely placed on the carry-out conveyor 10, the holding members 12A, 12B are separated from each other, and the gripping claws 14 are moved. It avoids and raises from the edge of the glass plate 1. FIG. And the glass plate 1 is conveyed to a predetermined place by the drive of the carry-out conveyor 10. In addition, when conveying the glass plate 1 to the carry-out conveyor 10 in this way, the roller groups 21 and 22 are used also as a support body which supports the glass plate 1 on the lower surface.
[0026]
By repeating the above operation, the glass plate is sequentially carried into the mounting plate 6 of the lower surface plate 5 and polished, and the glass plate 1 is lifted and unloaded from the mounting plate 6 of the lower surface plate 5.
[0027]
As described above, according to the embodiment of the present invention, the edge portion of the glass plate 1 placed on the placing plate 6 of the lower surface plate 5 is grasped by the grasping claws 14 of the holding members 12A and 12B, lifted, and placed. A roller group 21, 22 consisting of rollers 19, 20 is moved and inserted along the mounting plate 6 from the gap between the plate 6 and the glass plate 1, and the glass plate 1 is mounted on the mounting plate 6 with these rollers 19, 20. On the other hand, since the glass plate 1 is held and transported by the gripping claws 14 and the rollers 19 and 20, the glass plate 1 is placed on the mounting plate 6 of the lower surface plate 5 in a wet state. Moreover, even if it is the big glass plate 1, without requiring skill, the glass plate 1 can be reliably lifted from the mounting plate 6, and can be conveyed without damaging the glass plate 1. FIG.
[0028]
In the embodiment described above, the roller groups 21 and 22 as an example of the glass plate peeling member are used when the glass plate 1 is peeled from the loading plate 6 and carried out to the carry-out conveyor 10 side. Of course, the method of use can be changed according to the size of the glass plate 1. That is, when the glass plate 1 has a size that cannot be held only by the holding members 12A and 12B, the glass plate 1 is held by the holding members 12A and 12B even when the glass plate 1 is carried into the mounting plate 6. While being held, roller groups 21 and 22 are inserted between the glass plate 1 and the carry-in conveyor 8 and supported on the lower surface, and in this state, the glass plate 1 can be carried in without being damaged. . In this case, the roller groups 21 and 22 are also used as supports that are supported on the lower surface of the glass plate 1 when it is transported from the carry-in conveyor 8 to the lower surface plate 5.
[0029]
When the glass plate 1 has a size that can be held only by the holding members 12A and 12B, the roller groups 21 and 22 are inserted between the glass plate 1 and the mounting plate 6 in the same manner as in the above-described embodiment. The glass plate 1 may be used so as to be simply peeled from the mounting plate 6 by being moved along the direction 6.
[0030]
In the above-described embodiment, the moving device 25 is configured such that the roller groups 21 and 22 move in parallel to the mounting plate 6 and are inserted between the mounting plate 6 and the glass plate 1, but are not limited thereto. For example, as shown in FIG. 4, as the moving device 50, a cylinder device 51 that is configured to expand and contract in the horizontal direction and freely move up and down is provided, and can be raised and lowered at the ends of the rods 52 on both sides of the cylinder device 51. It is also possible to provide a flange member 54 that crosses each other via a shaft 53 and to provide a roller group 55, 56 composed of a plurality of rollers 55 a, 56 a at the lower end of each flange member 54. Other configurations are the same as those of the above embodiment.
[0031]
In the case of this embodiment, the roller groups 55 and 56 inserted from the gap between the mounting plate 6 and the glass plate 1 move in a circular arc along the mounting plate 6 by driving the cylinder device 51. Even in this embodiment, even if the glass plate 1 is placed on the mounting plate 6 of the lower surface plate 5 in a wet state, even if the glass plate 1 is a large glass plate 1, the skill is not required. The glass plate 1 can be lifted from the mounting plate 6 and transported without being damaged.
[0032]
Furthermore, in each said embodiment, although the example of the glass plate 1 was shown as a thin plate, it is not limited to this, A thin and large synthetic resin board | plate material or metal board | plate materials etc. are conveyed similarly. Can do.
[0033]
Moreover, in each said embodiment, the case where the glass plate 1 was lifted with respect to the lower surface plate 5 of the grinding | polishing apparatus 4 was shown, but it is not limited to this, Even if it is things other than the grinding | polishing apparatus 4, a glass plate Applicable when it is necessary to lift and transport 1.
[0034]
In the above embodiment, the example of the roller groups 21 and 22 including the rollers 19 and 20 has been shown as the glass plate 1 peeling member. However, the present invention is not limited thereto, and the roller group including the rollers 19 and 20 is not limited thereto. Instead of 21 and 22, a wedge-shaped peeling member may be used, and in this case, the same function and effect as in the above embodiment can be obtained.
[0035]
【The invention's effect】
As apparent from the above description, according to the present invention, it loaded lifting the edges of the sheet by the inserted holding member in the groove of the plate Chiage, between the surface plate and the thin plate when lifted edge of the sheet The thin plate peeling member is inserted from the generated gap to peel the thin plate from the surface plate, and the holding member can securely and easily transport the thin plate without damaging it.
[Brief description of the drawings]
FIG. 1 is a front view showing an overall configuration of a glass sheet holding and conveying apparatus according to a first embodiment of the present invention.
FIG. 2 is a plan view of the same.
FIG. 3 is a side view of the same.
FIG. 4 is a front view showing a schematic configuration of a moving device in a glass plate holding and conveying device showing another embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Glass plate 2 Holding | maintenance conveying apparatus 3 Conveyance path | route 5 Lower surface plate 6 Loading board 11 A conveyance stand 12A Holding member 12B Holding member 13 Position adjustment means 14 Grip claw 15 Support member 19 Roller 20 Roller 21 Roller group 22 Roller group 25 Moving apparatus 26 Movement Rail 29 Lifting cylinder device 31 Moving motor 33 Pinion 34 Rack

Claims

Inserting a holding member provided in a transport table for transporting a thin plate along a transport path so as to be movable up and down, into a groove of a mounting plate on a surface plate provided in the transport path,
After holding the holding members close to each other and supporting the lower surface of the thin plate, the holding member is raised to lift the edge of the thin plate placed on the surface plate,
When the edge of the thin plate is lifted, a thin plate peeling member is inserted from a gap generated between the surface plate and the thin plate to peel the thin plate from the surface plate,
The holding member is raised to support the thin plate and transport along the transport path.
Thin plate holding and conveying method.

While holding the thin plate with the holding member above the carry-in conveyor arranged on the carry-in side of the surface plate, the thin plate is conveyed to the surface plate with the thin plate peeling member supporting the thin plate on its lower surface,
Hold the thin plate with the holding member above the surface plate and convey the thin plate to the carry-out conveyor arranged on the carry-out side of the platen with the thin plate peeling member supporting the thin plate on its lower surface.
The thin plate holding and conveying method according to claim 1.

The thin plate peeling member is a roller group, and the roller group is moved close to each other to peel the thin plate from the surface plate.
The thin plate holding and conveying method according to claim 1 or 2.

Use a roller group consisting of a roller with a moving rod penetrated in the center and the end of the moving rod supported by a bearing.
The thin plate holding and conveying method according to claim 3.