JP3717531B2

JP3717531B2 - Plate-like body deposition method and apparatus

Info

Publication number: JP3717531B2
Application number: JP21507393A
Authority: JP
Inventors: 和彦長岡; 孝良中井; 康雅羽場
Original assignee: Taihei Machinery Works Ltd
Current assignee: Taihei Machinery Works Ltd
Priority date: 1993-08-06
Filing date: 1993-08-06
Publication date: 2005-11-16
Anticipated expiration: 2020-11-16
Also published as: JPH0753107A

Description

【０００１】
【産業上の利用分野】
本発明は、コンベヤ上を前段工程から高速状態で搬送されてくる、ベニヤ単板、合板、合成樹脂板等の板状体を、堆積位置の上方において、円滑且つ正確に落下堆積させる方法及び装置に関するものである。
【０００２】
【従来の技術】
従来より、この種板状体の堆積装置としては、実公昭４９−３３７２５号公報「合板用単板自動積重ね装置」に開示されている如く、単板移送用フォークを貼上げ台の上方に対して進退自在、且つ昇降自在とし、後退限においてこのフォーク上に載置された単板を貼上げ台上方まで前進させた時、フォーク自体を下降させた後、その後退限に至る間に、ストッパに単板の後端を当接させてその後退を停止させる、いわゆるフォークによって単板を引き抜く技術が公知である。
【０００３】
また、実公昭５３−２０８６９号公報「板状体の高速堆積装置」には、板状体の下面を支持または開放可能に架設したコ字型、Ｌ字型等の開閉支持機構を、クランク機構による回転間歇機構に連係して、この回転間歇機構の１回転作動中において、搬送されてきた板状体の支持と開放の両動作を行う技術が開示されている。
【０００４】
また、実公昭５０−６１４９号公報「積込装置における単板の離脱装置」には、刺着搬送される単板をコンベヤから離脱させて堆積する技術が開示されている。即ち、針状体を植設したコンベヤの堆積位置上方において、このコンベヤ上のある位置に鋭角の傾斜角で交差する傾斜コンベヤを設置して、コンベヤの回動に伴って搬送される単板の先端が傾斜コンベヤとの交差部に至る時、単板の上面を刺着している針状体から離脱させるものである。
【０００５】
さらに、特公昭４３−１５３１８号公報「ベニヤ板の区分けおよび積重ね装置」には、ベニヤ板をその吸着搬送工程中において等級別に仕分け堆積する技術が開示されている。即ち、ベニヤ板の搬送方向にはその等級毎に各々堆積場所が設置されており、等級づけされたベニヤ板は真空吸着コンベヤによって当該堆積場所まで搬送される時、これを検知してベニヤ蹴り出し機構が作動し、吸着搬送されているベニヤ板を取り外して堆積させるものである。
【０００６】
【発明が解決しようとする課題】
しかしながら、上記記載した従来装置のうち、フォークによる単板の引き抜き動作においては、フォーク引き抜き動に伴い、後端をストッパに物理的に接当させることにより単板を現位置に停止堆積させるので、その後端の座屈、損傷の危険性があり、高速度による引き抜き動には対応し得ないことになる。
【０００７】
また、板状体の下面を支持して搬送するコンベヤ自体が、堆積位置の上方において搬送方向に対して直交方向へ開放する開閉支持機構は、開放動が支点位置から揺動する機構となるので、板状体の支持位置を堆積位置上部からある距離以上離隔する必要があり、自由落下距離を小とし得なかった。
【０００８】
また、単板を刺着搬送する場合には、その表面に刺着痕ができるばかりか、コンベヤから刺着状態を解除する場合には、鋭角の傾斜角で交差する傾斜コンベヤを設置することになるため、前記記載の開閉支持機構と同様、板状体の支持位置を堆積位置上部からある距離以上離隔する必要があり、自由落下距離を小とし得ないこととなる。
【０００９】
さらに、ベニヤ板を吸着搬送する場合には、ベニヤ板に内在する裂け、割れ、節穴等の性状によって吸着不足を補うため、吸着搬送に必要とされる以上の真空力を供給する傾向となり、また、これに伴って堆積場所にてベニヤ板の吸着解除に際し、ベニヤ蹴り出し機構の作動力を大とせざるを得ない等の不都合が生じていた。
【００１０】
【課題を解決するための手段】
本発明は叙上に鑑み、板状体の堆積位置の上方に伸長状態で待機させた伸縮コンベヤを搬送方向へ直列的に複数個配置し、最後部に位置する伸縮コンベヤの後端位置に板状体の搬入コンベヤが設置され、前記板状体は搬入コンベヤと複数個の伸縮コンベヤ上を高速回転に伴って搬送されており、機枠の上面に片持ち状に取着した前記伸縮コンベヤの可動枠には、その前部に突出して前部可動プーリを支承し、かつ、機枠には前部固定プーリと後部固定プーリを固着すると共に、前記機枠には前・後部固定プーリ間隔内の垂直線上に垂直可動枠を取着し、この垂直可動枠の下部に後部可動プーリを設置し、前記可動枠の水平面内の後退限位置において垂直可動枠が下限位置に至るように制御することで設置面積を縮小しており、前記搬入コンベヤの途上には仕分け位置が設置されて板状体を堆積位置のうちの何れかへ仕分け堆積する仕分け信号を発信し、前記仕分け信号は前記距離設定器と連係され、この距離設定器からの出力は伸縮コンベヤのベルト回動用の原動機を停止させると共に、可動枠進退用の原動機を起動させており、複数個配置した前記伸縮コンベヤ上を搬送される板状体が仕分けすべき堆積位置上方間際で減速しながら停止した後、ベルトの緊張状態を保持しながら前記可動枠進退用の原動機を駆動させて伸縮コンベヤの可動枠を急速後退させることによって板状体を引き抜き、板状体は前後部の落下誤差を小として板状体の堆積位置に落下堆積させるものである。
【００１１】
また、板状体の堆積位置の上方に伸長状態で待機させた伸縮コンベヤを搬送方向へ直列的に複数個配置し、最後部に位置する伸縮コンベヤの後端位置に板状体の搬入コンベヤが設置され、前記板状体は搬入コンベヤと複数個の伸縮コンベヤ上を高速回転に伴って搬送されており、機枠の上面に片持ち状に取着した前記伸縮コンベヤの可動枠には、その前部に突出して前部可動プーリを支承し、かつ、機枠には前部固定プーリと後部固定プーリを固着すると共に、前記機枠には前・後部固定プーリ間隔内の垂直線上に垂直可動枠を取着し、この垂直可動枠の下部に後部可動プーリを設置し、前記可動枠の水平面内の後退限位置において垂直可動枠が下限位置に至るように制御することで設置面積を縮小しており、前記板状体の堆積位置の上方には伸縮コンベヤ上を搬送される板状体の前端を検出する検出器が設置され、前記搬入コンベヤの途上には仕分け位置が設置されて板状体を堆積位置のうちの何れかへ仕分け堆積する仕分け信号を発信すると共に、この仕分け位置から発信される仕分け信号を記憶器に出力し、この記憶器に接続した前記検出器は当該板状体が仕分けすべき堆積位置上に至った時を検出すると、この検出器に前記記憶器が応答し、伸縮コンベヤのベルト回動用原動機を停止させると共に、伸縮コンベヤの可動枠進退用原動機を作動させており、複数個配置した前記伸縮コンベヤ上を搬送される板状体が仕分けすべき堆積位置上方間際で減速しながら停止した後、ベルトの緊張状態を保持しながら前記可動枠進退用の原動機を駆動させて伸縮コンベヤの可動枠を急速後退させることによって板状体を引き抜き、板状体は前後部の落下誤差を小として板状体の堆積位置に落下堆積させるものである。
【００１２】
また、前記板状体の堆積位置の上方に伸長状態で伸縮コンベヤを待機させると共に、この伸縮コンベヤに対して板状体の厚み間隔を置いて押さえコンベヤを対設し、懸回した押さえコンベヤベルトの間隔内には押圧部材を配置し、伸縮コンベヤと押さえコンベヤのベルト間隔内に板状体が介在する間は、押さえコンベヤベルトも板状体の上面に接触して、この板状体の上下面は摩擦力を享受しており、前記伸縮コンベヤの前進限位置に板状体の前端が至るときに、伸縮コンベヤと押さえコンベヤのベルトの回転速度を同期的に減速制御させながら停止させるものである。
【００１３】
また、機枠の前後に一定間隔を置いて一対の前部固定プーリと後部固定プーリを固着し、この機枠上部を案内として、前方に位置する板状体の堆積位置に対して進退自在とした可動枠には、その前部に突出して前部可動プーリを支承し、前記機枠には前・後部固定プーリ間隔内の垂直線上に垂直可動枠を取着し、この垂直可動枠の下部に後部可動プーリを設置し、各プーリ間にベルトを折り返しながら無端状に懸回し、前記可動枠の水平面内の後退限位置において垂直可動枠が下限位置に至るようにして板状体の堆積位置に対して進退する伸縮コンベヤを構成すると共に、板状体の堆積位置の上方に伸長状態で待機させた伸縮コンベヤを搬送方向へ直列的に複数個配置し、最後部に位置する伸縮コンベヤの後端位置に板状体の搬入コンベヤが設置され、前記板状体は搬入コンベヤと複数個の伸縮コンベヤ上を搬送されており、前記搬入コンベヤの途上には板状体を堆積位置のうちの何れかへ仕分け堆積するための仕分け信号を発信する仕分け位置が設置され、この仕分け信号に基づいてこの伸縮コンベヤの上を搬送される板状体を堆積位置の上方において落下堆積させるものである。
【００１４】
また、前記搬入コンベヤの前記仕分け位置から発信する仕分け信号は距離設定器と連携されており、この距離設定器からの出力は伸縮コンベヤのベルト回動用の原動機と可動枠進退用の原動機とに連携し、ベルト回動用の原動機を停止させると共に可動枠進退用の原動機を起動させて可動枠を後退させるものである。
【００１５】
また、直列的に複数個配置した前記板状体の堆積位置の上方には伸縮コンベヤ上を搬送される板状体の前端を検出する検出器を設置し、前記搬入コンベヤの前記仕分け位置から発信される板状体を堆積位置のうちの何れかへ仕分け堆積するため仕分け信号が出力される記憶器を備え、前記検出器の出力は仕分け信号を記憶した記憶器に接続し、この検出器が仕分けすべき堆積位置上に板状体が至った時を検出すると、前記記憶器はベルト回動用の原動機を停止させると共に可動枠進退用の原動機を起動させて可動枠を後退させるものである。
【００１６】
また、前記板状体の堆積位置の上方で、伸長状態の前記伸縮コンベヤとの間に板状体の厚み間隔を置いて押さえコンベヤを設置し、この押さえコンベヤベルトの懸回したベルトの間隔内には押圧部材を配置し、伸縮コンベヤと押さえコンベヤのベルト間隔内に介在する板状体の上下面に摩擦力を享受させ、前記伸縮コンベヤの停止時期に同期して、前記押さえコンベヤのベルトの回転速度を同期的に減速制御させながら前記板状体を停止するものである。
【００１７】
さらに、板状体の堆積位置の上方に伸長状態で待機させた伸縮コンベヤを搬送方向へ直列的に複数個配置し、最後部に位置する伸縮コンベヤの後端位置に板状体の搬入コンベヤが設置され、前記板状体は搬入コンベヤと複数個の伸縮コンベヤ上を搬送されており、前記板状体の搬送方向の前後に隣接する各伸縮コンベヤ間に板状体を移乗させる中継コンベヤを設置し、前記中継コンベヤの前方に位置する伸縮コンベヤの搬送面を中継コンベヤの搬送面より低くしたものである。
【００１８】
【作用】
前段工程から中継コンベヤを経て搬送されてくる板状体が、中継コンベヤから伸縮コンベヤの後部上に移乗される時、伸縮コンベヤは可動枠の前進限位置である堆積位置の上方にて伸長状態で待機しており、また、この前進限位置の伸縮コンベヤに移乗された板状体は、伸縮コンベヤに懸回されたベルトの高速回転に伴って前進限位置にある伸縮コンベヤの前部に至る間際、伸縮コンベヤのベルトを減速、停止制御し、その後、ベルトの緊張状態を保持しながら可動枠を急速後退させ、伸縮コンベヤの前部に位置する可動プーリが反時計方向へ回転しながら板状体を引き抜き、板状体の前後部の落下誤差を小として堆積させるものである。
【００１９】
【実施例】
以下、本発明の方法を直接実施する装置の一実施例を、添付図面に基づいてまず構成より説明する。
機枠１の前後に搬送方向に直交して一対の軸２，３を支承させ、各軸部の両端に前、後部固定プーリ４，５を固着する。前記機枠１の上面にはスライドレール或いは図示のようなリニヤウエイ等の移動部材６が各々敷設され、各移動部材６上に前後に任意間隔を置いてリニヤブロック７を載架し、これらリニヤブロック７の前部と後部を各々連結梁８を介して連結すると共に、前後の連結梁８の両端延長上に、前記前、後部固定プーリ４，５間を結ぶ線上に位置する如く可動枠９を片持ち状に取着している。
【００２０】
この一対の可動枠９の前部に突出して前部可動プーリ１０を支承し、また、この前部可動プーリ１０の後方下部に一定の距離Ｌを置いて後部可動プーリ１１を回転自在に支承すると共に、前記各固定プーリ４，５間にこれら前後部可動プーリ１０，１１が介在するように、即ち、機枠１の後部固定プーリ５から可動枠９の前部可動プーリ１０、可動枠９の後部可動プーリ１１、機枠１の前部固定プーリ４へと順次折り返し、機枠１の後部固定プーリ５にベルト１２を無端状に、且つバランスウエイト、タイナープーリ等（図示せず）を介して緊張状態にて懸回している。
【００２１】
前記ベルト１２が懸回された後部軸３は鎖車を介してベルト回動用の原動機１３に接続され、この原動機１３の制御によってベルト１２の駆動、減速、停止を制御しておりまた、前記可動枠９の進退動を制御すべく前記機枠１間に駆動軸１４を支承し、この駆動軸１４に鎖車を介して可動枠進退用の原動機１５を接続し、伸縮コンベヤ１６を構成している。前記機枠１の前方で、前進限位置の下方には板状体１７をパレットを介して堆積する昇降台１８が設置され、昇降台１８上に堆積された板状体１７の上面高さは検出器によって常時一定になるように制御されている。尚、図１から図３の可動枠９は片持ち状であるので、板状体１７の搬送方向に直交する長さに対する制限はない。
【００２２】
また、この昇降台１８の上方には、前進限位置にある前記伸縮コンベヤ１６の高さに対して、上下方向に少なくとも板状体１７の厚み間隔を置いて押さえコンベヤ１９を設置し、この押さえコンベヤ１９の駆動、減速、停止等の制御を前記伸縮コンベヤ１６のベルト１２制御と同調させている。この押さえコンベヤ１９は、前後に一対設置されたプーリ２０間に前記ベルト１２と同様なベルト２１を懸回し、この間隔内の前後に厚み応答性能の高いエヤシリンダ、スプリング等の押圧部材２２に接続されたプーリ２３を配置し、この前後のプーリ２３間隔内に搬送方向に対して複数個の板バネ２４を各個独立させて懸吊支持し、ベルト２１を内側より一定の圧力によって付勢させている。一方、前記機枠１の上方には、前段工程から搬送される板状体１７を伸縮コンベヤ１６上へ移乗させる中継コンベヤ２５が、伸縮コンベヤ１６の上下方向へ一定の間隔を置いて設置されている。
【００２３】
しかして、可動枠進退用の原動機１５を駆動させると、後退限に位置する可動枠９は片持ち状態を保持したまま、移動部材６上をリニヤブロック７を介して前進し、前後一対に支承された前後部可動プーリ１０，１１はその間隔Ｌを保持し、且つベルト１２の緊張状態を保持したまま水平面内にて急速に移動することになり、堆積位置上方へ、即ち、伸縮コンベヤ１６の前進限位置に至り、当該位置に一旦停止させる。
【００２４】
次いで、ベルト回動用の原動機１３を駆動させることにより、前進限に位置する伸縮コンベヤ１６のベルト１２を高速にて回転させながら、中継コンベヤ２５上を前段工程から搬送されてくる板状体１７を移乗させる。従って、板状体１７はベルト１２の継続的な高速回転によって前方へ搬送され、堆積位置上方に至る時、その上部が押さえコンベヤ１９に接することになる。この時、板状体１７の前端はプーリ２３に当接することになるが、この当接時の瞬間的な衝撃力は、押圧部材２２がエヤシリンダであれば、シリンダ室後部から大気へ瞬時に放散された同量の空気がシリンダ室前部に流入することにより、また、スプリングであれば弾性復帰によって、プーリ２３自体がその衝撃に応答して上方へ退避した後、直ちに原位置へ復帰することにより、板状体１７が上部のベルト２１との非接触状態となるのを防止し、上部のベルト２１との摺接度合いを増すものである。また、各個独立した板バネ２４の作動によって回転途上のベルト２１を、板状体１７の上面に常時接触させることになる。
【００２５】
この一対のベルト１２，２１間に板状体１７が介在された時点において、上下のベルト１２，２１の回転速度を同期的に減速し始め、伸縮コンベヤ１６の前進限位置に板状体１７の前端が至る時、その回転を停止させる。この一対のベルト１２，２１間隔内に板状体１７が介在する間、板状体１７を搬送する伸縮コンベヤ１６のベルト１２のみならず、その上部に位置する押さえコンベヤ１９のベルト２１も前記記載の如く、板状体１７の上面に接触させており、その上下面はほぼ同一の摩擦力を享受できることにより、ベルト停止時において板状体１７に掛かる前方への慣性力が打ち消され、停止位置が確保されることになる。
【００２６】
上下のベルト１２，２１の回転の停止後、可動枠進退用の原動機１５を駆動させると、前進限に位置する可動枠９は前記記載と逆に、移動部材６上をリニヤブロック７を介して後退し、前後一対に支承された前、後部可動プーリ１０，１１はその間隔Ｌを保持し、且つベルト１２の緊張状態を保持したまま水平面内にて急速に移動して昇降台１８上方から退避することになり、中継コンベヤ２５から次位の板状体１７の受け入れ位置へ、即ち、伸縮コンベヤ１６の後退位置に至る。この可動枠９はその後退途上、ベルト１２の緊張状態を保持しながら急速後退しているので、伸縮コンベヤ１６の前部に位置する前部可動プーリ１０が反時計方向へ回転しながら板状体１７をその前端部分から自由落下させて引き抜き、板状体１７の前後部の落下誤差を小として堆積させるものである。以後、上記動作を繰り返すことによって、前段工程から搬送されてくる板状体１７を昇降台１８上へ順次高速にて堆積することになり、また、板状体１７の堆積量に応じて検知器が作動し、昇降台１８は前進限位置にある伸縮コンベヤ１６との任意間隔を保ちながら下降することになる。
【００２７】
尚、可動枠９の進退動によって移動する間隔Ｌは昇降台１８上に堆積される板状体１７の長さを基準に設定され、上記実施例においては、片持ち状の可動枠９の前後に水平面内にて支承された前、後部可動プーリ１０，１１間隔としているが、可動枠９はこの実施例のように片持ち状として限定されるものでなく、可動枠９の前後にリニヤブロック７を取着して移動部材６上に載架してもよい。この場合、移動部材６は可動枠９の前進限位置である堆積位置まで敷設する必要があり、板状体１７の搬送方向に直交する長さは相対向する移動部材６の間隔内に制限されることになる。また、図４に示す如く、前部固定プーリ４と後部可動プーリ５を上下方向に任意の間隔を置いて、多段に折り返しながら複数対設置することによって、水平面内における間隔Ｌを小とし得、設置面積の縮小も可能であり、この図４の２対の前部固定プーリ４０，後部固定プーリ５０と前部可動プーリ１００，後部可動プーリ１１１とすれば、水平面内における間隔はＬ／２となる。
【００２８】
また、図５に示すものは、水平面内において進退する可動枠９の間隔Ｌを垂直面内に置換するものであり、これは水平面内において進退動する可動枠９部分と、この水平面内において進退動する距離Ｌを水平面内に置換する垂直可動枠９０部分とからなる。即ち、垂直面内においても垂直線上にスライドレール或いはリニヤウエイ等の移動部材６０を敷設し、この移動部材６０上に上下に任意間隔を置いてリニヤブロック７７を載架し、これらリニヤブロック７７の上部と下部を前、後部固定プーリ４０，５０間隔内の垂直線上に位置する如く垂直可動枠９０を取着し、前記可動枠９の前部に前部可動プーリ１００を、また垂直可動枠９０の下部、或いは図示のような上部に後部可動プーリ１１１を各々設置し、可動枠９の水平面内の前進限位置において垂直可動枠９０が上限位置に、可動枠９の水平面内の後退限位置において垂直可動枠９０が下限位置に至るように制御すれば、水平面内における設置面積の大幅な縮小が可能となるものである。
【００２９】
さらに、図６に示すものは、垂直面内において進退動する後部可動プーリ１１１を水平方向に任意の間隔を置いて、多段に折り返しながら複数対設置したものであって、図５に比して垂直面内における間隔Ｌを小とし得、垂直面内の設置面積の縮小も可能であり、この図６の２対の前部固定プーリ４０、後部固定プーリ５０と、前部可動プーリ１００と後部可動プーリ１１１とすれば、水平面内における間隔はＬ／２となる。
【００３０】
図７および図８には、この伸縮コンベヤ１６を搬送方向へ直列的に複数個配置して、板状体１７の等級、種別、品質等に応じて仕分け堆積する実施例が示されている。図示例における伸縮コンベヤ１６は３個からなり、便宜上、図５にて示した垂直面内を垂直可動枠９０を介して伸縮する方式を採用し、板状体１７を堆積する昇降台１８も３台設置されている。また、後方に位置する伸縮コンベヤ１６の可動枠９の前進限位置と、その前方に位置する伸縮コンベヤ１６の後部固定プーリ５間にクリアランスがある場合、このクリアランス内に受け渡しコンベヤを設置するか、或いは後方に位置する伸縮コンベヤ１６の可動枠９の前進限位置が、その前方に位置する伸縮コンベヤ１６の後部固定プーリ５内に若干入り組んだ位置として板状体１７の前方への移乗を図るものとする。
【００３１】
図示例において、後方に位置する伸縮コンベヤ１６の可動枠９の作動位置内と、その前方に位置する伸縮コンベヤ１６の後部固定プーリ５間にはクリアランスがあるが、このクリアランスには前記記載した如き中継コンベヤ２５が介在されている。この中継コンベヤ２５は後方に位置する伸縮コンベヤ１６と同一搬送面としており、また、その後部位置は後方に位置する伸縮コンベヤ１６が板状体１７を堆積するために停止させる位置よりも少なくとも前方に位置させることになる。また、この中継コンベヤ２５の前部位置は、前方に位置する伸縮コンベヤ１６の可動枠９の作動時に少なくとも干渉しない位置としている。尚、前方に位置する伸縮コンベヤ１６の搬送面を中継コンベヤ２５の搬送面より若干低くすることによって、前方に位置する伸縮コンベヤ１６の作動状態に影響されることなく、板状体１７の前方への搬送距離を短くすることができることになり、実施例の如く搬送方向へ直列的に３台設置されている場合には、搬送面が３段階に亘って低く設定されることになる。
【００３２】
最後部に位置する伸縮コンベヤ１６の後端位置には無段変速機２６の駆動を享受する搬入コンベヤ２７が設置されており、この搬入コンベヤ２７の途上には仕分け位置２８が設置され、前段工程から搬送されてくる板状体１７の仕分けを人為的に判別するか、若しくは板状体１７の等級、性状、欠点を検知する検知器を設置し、板状体１７を３台の昇降台１８のうちの何れかへ仕分け堆積する仕分け信号２９を発信するものである。尚、この搬入コンベヤ２７と最後部に位置する伸縮コンベヤ１６の始端位置のクリアランスには、前記記載の中継コンベヤ２５を図示例の如く同様に設置するか、この搬入コンベヤ２７自体を中継コンベヤ２５とするか、或いは伸縮コンベヤ１６の後部固定プーリ５内に搬入コンベヤ２７を若干入り組ませても良い。
【００３３】
仕分け判別された板状体１７を各昇降台１８上へ仕分け堆積する制御系としては、搬入コンベヤ２７上の仕分け位置２８から各昇降台１８までのそれぞれの距離を所定距離として計測するか、或いは判別された当該板状体１７が仕分けすべき昇降台１８上に至った時を検知して、伸縮コンベヤ１６の作動系を制御することになる。具体的には前者によれば、前記無段変速機２６に搬入コンベヤ２７の駆動回転に伴うパルス量を発信するパルス発信器３０を連係し、このパルス発信器３０を前記搬入コンベヤ２７上の仕分け位置２８から各昇降台１８までのそれぞれの距離、即ち搬送方向の手前の昇降台１８から順にＳ１，Ｓ２，Ｓ３の距離がパルス量に変換されている距離設定器３１に接続する。一方、前記仕分け信号２９は前記距離設定器３１と連係され、複数個の記憶素子が内蔵された記憶器３２内へ出力され、この記憶器３２と伸縮コンベヤ１６の作動系であるベルト回動用の原動機１３並びに可動枠進退用の原動機１５と直列的に接続するものである。
【００３４】
この制御回路によれば、板状体１７の仕分け信号２９とパルス量に変換された距離設定器３１からの出力が記憶器３２に入力され、この記憶器３２内の各記憶素子がカウントアップする時、伸縮コンベヤ１６のベルト回動用の原動機１３を停止させると共に、当該記憶素子をリセットし、また、可動枠進退用の原動機１５を起動させて前進限に位置する可動枠９を後退させるものである。尚、当該板状体１７が仕分け堆積される伸縮コンベヤ１６上において、停止間際の伸縮コンベヤ１６のベルト回動速度を減速して停止位置における板状体１７の慣性を減衰させるべく、制御回路中の前記距離設定器３１に補正設定器３３を接続して、積算されるパルス量の過程で伸縮コンベヤ１６のベルト回動用の原動機１３に減速指令を複数段階に発信して板状体１７の搬送途上の位置に見合った速度制御をしてもよい。
【００３５】
また、後者の制御系としては、図９に示す如く、前記搬入コンベヤ２７上の仕分け位置２８を通過する板状体１７を、その搬送順に検出するカウンタ３４を搬入コンベヤ２７上に備え、仕分け位置２８から発信される仕分け信号２９を記憶器３２内の各記憶素子に出力する毎に、前記カウンタ３４からの検出信号３５を同期的に出力している。一方、各昇降台１８の上方には伸縮コンベヤ１６上を搬送される板状体１７の前端を検出する光電管、リミットスイッチ等の検出器３６が設置され、これらカウンタ３４、検出器３６と前記記憶器３２を接続して搬入コンベヤ２７上の仕分け位置２８において判別された当該板状体１７が仕分けすべき昇降台１８上に至った時を当該検出器３６によって検出して、伸縮コンベヤ１６の作動系を制御することになる。この時、仮に判別された板状体１７が最前部である３台目の昇降台１８上に堆積するものであれば、１台目並びに２台目に設置された検出器３６に対しては、前記記憶器３２内の当該記憶素子から１台目並びに２台目の当該伸縮コンベヤ１６の作動系に対する出力禁止信号３７が発信されており、板状体１７は継続回動する各伸縮コンベヤ１６のベルト１２上を通過することになる。
【００３６】
当該検出器３６に記憶素子が応答する時、前者の制御系と同様、伸縮コンベヤ１６のベルト回動用の原動機１３を停止させると共に、当該記憶素子をリセットし、また、可動枠進退用の原動機１５を起動させて前進限に位置する可動枠９を後退させるものである。また、前者の制御系と同様、当該板状体１７が仕分け堆積される伸縮コンベヤ１６上において、停止間際の伸縮コンベヤ１６のベルト１２回動速度を減速して停止位置における板状体１７の慣性を減衰させる場合には、前記検出器３６の手前位置に補正検出器３８を配置した補正回路を設置し、伸縮コンベヤ１６のベルト回動用の原動機１３に減速指令を複数段階に発信して板状体１７の搬送途上の位置に見合った速度制御をしてもよい。
【００３７】
尚、伸縮コンベヤ１６を搬送方向へ直列的に複数個配置して、板状体１７の等級、種別、品質等に応じて仕分け堆積するに際し、垂直面内を垂直可動枠９０を介して伸縮する方式を採用しているが、図１から図３に示す如き水平面内における方式としてもよく、また、当該昇降台１８の上方位置には可動枠９の前進限位置の伸縮コンベヤ１６の上面に接触し得る押さえコンベヤ１９を配設して、そのベルト２１の駆動、減速、停止制御を、伸縮コンベヤ１６のベルト回動用の原動機１３と同一に制御して板状体１７の上面にも下面とほぼ同一の摩擦力を享受させ、停止時における板状体１７に掛かる前方への慣性力を極限まで低減させ、停止位置の精度を保証しながら堆積作業の高速化を図ってもよい。
【００３８】
【発明の効果】
以上のように本発明によれば、板状体の堆積位置の上方に前進限状態で伸縮コンベヤを待機させ、伸縮コンベヤ上を高速回転に伴って搬送される板状体を堆積位置上方間際で減速しながら停止した後、ベルトの緊張状態を保持しながら可動枠を急速後退させることによって、伸縮コンベヤの前部に位置する可動プーリを反時計方向へ回転させて板状体を引き抜き、板状体の前後部の落下誤差を小として堆積させるので、前記記載した従来方式に比して、板状体の性状を問わず、板状体自体の損傷を防止し、堆積位置の落下距離を小とし得、さらに堆積作業をより高速化できるものである。
【００３９】
また、板状体の堆積位置の上部に板状体の上面に接触し得る押さえコンベヤを配設し、伸縮コンベヤと押さえコンベヤの各ベルトを同期的に制御させたり、この押さえコンベヤに代替して、板状体の上面に接触し得る摩擦部材を昇降自在に配設し、この伸縮コンベヤのベルトの停止時期に同期して摩擦部材を下降制御させることにより、板状体の下面ばかりかその上面にもほぼ同一の摩擦力を享受させれば、停止時において板状体に掛かる前方への慣性力を極限まで低下でき、高速堆積作業におけるより一層の停止位置精度が確保されることになる。
【００４０】
さらに、この伸縮コンベヤを搬送方向へ直列的に複数個配置して、搬入コンベヤ上を通過する板状体に対し、その等級、種別、品質等に応じた仕分け信号を発信すれば、人手を介さず、また板状体の性状を問わず、板状体自体の損傷を防止しながら、任意の堆積位置へ板状体を高速状態で仕分け堆積することが可能となる。
【図面の簡単な説明】
【図１】本発明の一実施例を示す平面図である。
【図２】図２の側面図である。
【図３】本発明の一実施例の作動説明図である。
【図４】本発明の他の実施例の作動説明図である。
【図５】本発明の他の実施例の作動説明図である。
【図６】本発明の他の実施例の作動説明図である。
【図７】本発明の他の実施例の作動説明図である。
【図８】図７の平面図である。
【図９】図７の他の実施例のブロック図である。
【符号の説明】
１…機枠、２，３…軸、４，４０…前部固定プーリ、５，５０…後部固定プーリ、６，６６…移動部材、７，７７…リニヤブロック、８…連結梁、９，９０…可動枠、１０，１００…前部可動プーリ、１１，１１１…後部可動プーリ、１２…ベルト、１３…ベルト回動用の原動機、１４…駆動軸、１５…可動枠進退用の原動機、１６…伸縮コンベヤ、１７…板状体、１８…昇降台、１９…押さえコンベヤ、２０…プーリ、２１…ベルト、２２…押圧部材、２３…プーリ、２４…板バネ、２５…中継コンベヤ、２６…無段変速機、２７…搬入コンベヤ２７、２８…仕分け位置、２９…仕分け信号、３０…パルス発信器、３１…距離設定器、３２…記憶器、３３…補正設定器、３４…カウンタ、３５…検出信号、３６…検出器、３７…出力禁止信号、３８…補正検出器。[0001]
[Industrial application fields]
The present invention provides a method and apparatus for smoothly and accurately dropping and depositing a plate-like body such as a veneer veneer, a plywood, a synthetic resin plate, etc., which is conveyed on a conveyor at a high speed from the previous step, above a deposition position. It is about.
[0002]
[Prior art]
Conventionally, as the seed plate-like body deposition apparatus, as disclosed in Japanese Utility Model Publication No. 49-33725, “Single-plate automatic stacking device for plywood”, a single-plate transfer fork is placed above the sticking table. When the veneer mounted on the fork is advanced to the upper part of the sticking table at the retreat limit, the fork itself is lowered and then the stopper is moved to the retreat limit. A technique is known in which a single plate is pulled out by a so-called fork, in which the rear end of the single plate is brought into contact with the single plate to stop its retreat.
[0003]
Japanese Utility Model Publication No. 53-20869, “Plate-like High-Speed Deposition Device” includes a C-shaped, L-shaped open / close support mechanism in which a lower surface of the plate-like body is supported or opened, and a crank mechanism. In connection with the rotating intermittent mechanism, a technique for performing both the support and release operations of the conveyed plate-like body during one rotation of the rotating intermittent mechanism is disclosed.
[0004]
Japanese Utility Model Publication No. 50-6149, “Single Plate Separation Device for Loading Device” discloses a technique for separating a single plate to be pierced and conveyed from the conveyor and depositing it. In other words, above the stacking position of the conveyor in which the needles are planted, an inclined conveyor that intersects with a certain acute angle at a certain position on the conveyor is installed, and the single plate conveyed as the conveyor rotates. When the tip reaches the intersection with the inclined conveyor, the upper surface of the veneer is detached from the needle-like body.
[0005]
Further, Japanese Patent Publication No. 43-15318 “Veneer Plate Sorting and Stacking Device” discloses a technique for sorting and depositing veneer plates according to grade during the suction conveyance process. In other words, there is a deposition place for each grade in the conveying direction of the plywood, and when the graded plywood is conveyed to the deposition place by the vacuum suction conveyor, this is detected and the veneer kicking mechanism is Operates and removes and deposits the plywood being sucked and conveyed.
[0006]
[Problems to be solved by the invention]
However, among the conventional devices described above, in the pulling operation of the single plate by the fork, the single plate is stopped and accumulated at the current position by physically contacting the rear end with the stopper along with the fork pulling movement. There is a risk of buckling and damage at the rear end, and it cannot cope with the pulling out movement at a high speed.
[0007]
In addition, the opening / closing support mechanism in which the conveyor itself that supports and conveys the lower surface of the plate-like body opens in the direction perpendicular to the conveying direction above the deposition position is a mechanism in which the opening movement swings from the fulcrum position. The support position of the plate-like body needs to be separated from the upper part of the deposition position by a certain distance or more, and the free fall distance cannot be made small.
[0008]
In addition, when a single plate is pierced and transported, not only the surface of the stab is made, but also when releasing the stabbed state from the conveyor, an inclined conveyor that intersects at an acute angle is installed. Therefore, like the open / close support mechanism described above, the support position of the plate-like body needs to be separated from the upper part of the deposition position by a certain distance or more, and the free fall distance cannot be reduced.
[0009]
In addition, when sucking and transporting a plywood board, it tends to supply more vacuum force than is necessary for suction and transportation to compensate for insufficient suction due to the properties of tears, cracks, joint holes, etc. inherent in the plywood board. As a result, when releasing the suction of the veneer plate at the deposition site, there has been a disadvantage that the operating force of the veneer kicking mechanism has to be increased.
[0010]
[Means for Solving the Problems]
In view of the above description, the present inventionA plurality of stretchable conveyors that are kept waiting in an extended state are arranged in series in the transport direction, and a plate-like object carrying conveyor is installed at the rear end position of the elastic conveyor located at the rearmost part. The movable frame of the telescopic conveyor, which is transported on a plurality of telescopic conveyors with high-speed rotation and attached to the upper surface of the machine frame in a cantilevered manner, protrudes to the front and supports the movable front pulley. In addition, a front fixed pulley and a rear fixed pulley are fixed to the machine frame, and a vertical movable frame is attached to the machine frame on a vertical line within a distance between the front and rear fixed pulleys. A rear movable pulley is installed at the bottom, and the installation area is reduced by controlling the vertical movable frame to reach the lower limit position at the retreat limit position in the horizontal plane of the movable frame. Position is installed and the plate A sorting signal for sorting and depositing to any of the positions is transmitted, and the sorting signal is linked to the distance setting device, and the output from the distance setting device stops the motor for rotating the belt of the telescopic conveyor and is movable. The prime mover for frame advancement and retreat is activated, and a plurality of the above are arranged.Plate-like body conveyed on telescopic conveyorShould be sortedAfter stopping while decelerating just above the deposition position, while maintaining the tension of the beltThe movable frame is moved forward and backward to drive the retractable conveyor.Rapidly retract the movable framePull out the plate-like body,The plate-like body has a small drop error at the front and back.Plate-likeIt is to be deposited at the deposition position.
[0011]
In addition, above the position where the plate is depositedA plurality of stretchable conveyors that are kept waiting in an extended state are arranged in series in the transport direction, and a plate-like object carrying conveyor is installed at the rear end position of the elastic conveyor located at the rearmost part. The movable frame of the telescopic conveyor, which is transported on a plurality of telescopic conveyors with high-speed rotation and attached to the upper surface of the machine frame in a cantilevered manner, protrudes to the front and supports the movable front pulley. In addition, a front fixed pulley and a rear fixed pulley are fixed to the machine frame, and a vertical movable frame is attached to the machine frame on a vertical line within a distance between the front and rear fixed pulleys. A rear movable pulley is installed at the bottom, and the installation area is reduced by controlling the vertical movable frame to reach the lower limit position at the retreat limit position in the horizontal plane of the movable frame. Above the plate is transported on the telescopic conveyor A detector for detecting the front end of the body is installed, a sorting position is installed in the middle of the carry-in conveyor, and a sorting signal for sorting and depositing the plate-like body to any of the deposition positions is transmitted, and this sorting position When the detector connected to the storage device detects when the plate has reached the deposition position to be sorted, the storage device is connected to the storage device. In response, the belt rotation motor of the telescopic conveyor is stopped and the movable frame moving motor of the telescopic conveyor is operated. After stopping while decelerating just before the upper side, the movable frame of the telescopic conveyor is rapidly retracted by driving the movable frame advancing / retreating prime mover while maintaining the tension state of the belt, thereby the plate-like body Pull-out,The plate-like body has a small drop error at the front and back.Plate-likeIt is to be deposited at the deposition position.
[0012]
Also,The stretchable conveyor is made to stand by in the extended state above the position where the plate-like body is deposited, and the presser conveyor belt is suspended by placing a plate-like body at a thickness interval with respect to the stretchable conveyor. A pressing member is arranged inside, and while the plate-like body is interposed within the belt interval between the telescopic conveyor and the holding conveyor, the holding conveyor belt also contacts the upper surface of the plate-like body, and the upper and lower surfaces of this plate-like body are When the front end of the plate-shaped body reaches the forward limit position of the telescopic conveyor, the frictional force is enjoyed, and the rotational speeds of the belts of the telescopic conveyor and the pressing conveyor are controlled while being controlled to be decelerated synchronously.
[0013]
In addition, a pair of gaps are placed at the front and back of the machine frame.frontFixed pulleyAnd fixed rear fixed pulleyThe upper part of the machine frame is used as a guide, and the movable frame can be moved forward and backward relative to the deposition position of the plate-like body located in frontProjecting at its frontSupport the front movable pulley,A vertical movable frame is attached to the machine frame on a vertical line within the space between the front and rear fixed pulleys, a rear movable pulley is installed at the lower part of the vertical movable frame, and the belt is folded endlessly between each pulley and suspended endlessly. And a retractable conveyor that moves forward and backward with respect to the stacking position of the plate-shaped body so that the vertical movable frame reaches the lower limit position at the retreat limit position in the horizontal plane of the movable frame, and above the stacking position of the plate-shaped body A plurality of telescopic conveyors that are kept in a stretched state are arranged in series in the transport direction, and a plate-like object carry-in conveyor is installed at the rear end position of the elastic conveyer located at the rearmost part. And a plurality of telescopic conveyors, and a sorting position for sending a sorting signal for sorting and depositing the plate-like body to any one of the deposition positions is installed in the middle of the carry-in conveyor. Signal Zui it is intended to drop deposited above the deposition location the plate body to be conveyed over the telescopic conveyor.
[0014]
Also,The sorting signal transmitted from the sorting position of the carry-in conveyor is linked to a distance setter, and the output from the distance setter is linked to the prime mover for rotating the belt of the telescopic conveyor and the prime mover for moving the movable frame forward and backward. The motor for rotating the belt is stopped and the motor for moving the movable frame back and forth is activated to move the movable frame backward.
[0015]
Also,A detector for detecting the front end of the plate-like member conveyed on the telescopic conveyor is installed above the stacking position of the plate-like members arranged in series, and is transmitted from the sorting position of the carry-in conveyor. A storage device for outputting a sorting signal for sorting and depositing the plate-like body at any of the deposition positions is provided, and the output of the detector is connected to a storage device storing the sorting signal, and this detector sorts the plate-like body. When detecting the time when the plate-like body has reached the deposition position, the storage unit stops the prime mover for rotating the belt and activates the prime mover for moving the movable frame back and forth to retract the movable frame.
[0016]
Also,Above the position where the plate-like body is deposited, a press conveyor is installed with a thickness interval of the plate-like body between the stretched stretchable conveyor and within the interval between the belts around which the press conveyor belt is suspended. A pressing member is arranged so that friction is exerted on the upper and lower surfaces of the plate-like body interposed within the belt interval between the telescopic conveyor and the press conveyor, and the rotation speed of the belt of the press conveyor is synchronized with the stop timing of the telescopic conveyor. The plate-like body is stopped while synchronously performing deceleration control.
[0017]
further,A plurality of stretchable conveyors placed in a stretched state are placed in series in the transport direction above the plate stacking position, and a plate-shaped carry-in conveyor is installed at the rear end position of the stretchable conveyor located at the end. The plate-like body is carried on a carry-in conveyor and a plurality of stretchable conveyors, and a relay conveyor is installed to transfer the plate-like body between the stretchable conveyors adjacent to each other before and after the plate-like body is conveyed. The transport surface of the telescopic conveyor located in front of the relay conveyor is lower than the transport surface of the relay conveyor.
[0018]
[Action]
When the plate-like body conveyed from the preceding stage via the relay conveyor is transferred from the relay conveyor onto the rear part of the telescopic conveyor, the telescopic conveyor is in an extended state above the deposition position which is the forward limit position of the movable frame. The plate-like body that is waiting and transferred to the telescopic conveyor at the forward limit position is just before reaching the front of the telescopic conveyor at the forward limit position with the high-speed rotation of the belt suspended by the telescopic conveyor. The belt of the telescopic conveyor is decelerated and stopped, and then the movable frame is rapidly retracted while maintaining the tension of the belt, and the movable pulley positioned at the front of the telescopic conveyor is rotated counterclockwise to form a plate-like body. And is deposited with a small drop error at the front and rear portions of the plate-like body.
[0019]
【Example】
In the following, an embodiment of an apparatus for directly carrying out the method of the present invention will be described from the configuration based on the attached drawings.
A pair of shafts 2 and 3 are supported on the front and rear of the machine frame 1 so as to be orthogonal to the conveying direction, and front and rear fixed pulleys 4 and 5 are fixed to both ends of each shaft portion. Moving members 6 such as slide rails or linear ways as shown are respectively laid on the upper surface of the machine casing 1, and linear blocks 7 are placed on the moving members 6 at an arbitrary interval in the front-rear direction. 7 is connected to each other via a connecting beam 8, and a movable frame 9 is positioned on both ends of the front and rear connecting beams 8 so as to be positioned on a line connecting the front and rear fixed pulleys 4 and 5. It is attached in a cantilever shape.
[0020]
The front movable pulley 10 is supported by projecting to the front part of the pair of movable frames 9, and the rear movable pulley 11 is rotatably supported at a certain distance L at the rear lower part of the front movable pulley 10. In addition, the front and rear movable pulleys 10 and 11 are interposed between the fixed pulleys 4 and 5, that is, the front movable pulley 10 and the movable frame 9 of the movable frame 9 from the rear fixed pulley 5 of the machine frame 1. The rear movable pulley 11 and the front fixed pulley 4 of the machine frame 1 are sequentially folded back, and the belt 12 is endlessly connected to the rear fixed pulley 5 of the machine frame 1 and via a balance weight, a tie pulley, etc. (not shown). Suspended in tension.
[0021]
The rear shaft 3 around which the belt 12 is suspended is connected to a prime mover 13 for rotating the belt via a chain wheel, and the drive, deceleration, and stop of the belt 12 are controlled by the control of the prime mover 13. A drive shaft 14 is supported between the machine frames 1 in order to control the advance and retreat of the frame 9, and a movable frame advance / retreat motor 15 is connected to the drive shaft 14 via a chain wheel to constitute a telescopic conveyor 16. Yes. In front of the machine frame 1, below the forward limit position, a lift 18 for depositing the plate 17 via a pallet is installed, and the height of the upper surface of the plate 17 deposited on the lift 18 is as follows. It is controlled so as to be always constant by the detector. Since the movable frame 9 of FIGS. 1 to 3 is cantilevered, there is no restriction on the length orthogonal to the conveying direction of the plate-like body 17.
[0022]
In addition, a press conveyor 19 is installed above the elevator platform 18 with a thickness interval of at least the plate-like body 17 in the vertical direction with respect to the height of the telescopic conveyor 16 at the forward limit position. Controls such as driving, decelerating, and stopping of the conveyor 19 are synchronized with the belt 12 control of the telescopic conveyor 16. The press conveyor 19 suspends a belt 21 similar to the belt 12 between a pair of front and rear pulleys 20 and is connected to a press member 22 such as an air cylinder or a spring having high thickness response performance before and after the interval. A plurality of leaf springs 24 are independently suspended and supported in the conveyance direction within the interval between the front and rear pulleys 23, and the belt 21 is urged by a constant pressure from the inside. . On the other hand, a relay conveyor 25 for transferring the plate-like body 17 transported from the previous step onto the telescopic conveyor 16 is installed above the machine frame 1 at regular intervals in the vertical direction of the telescopic conveyor 16. Yes.
[0023]
Thus, when the prime mover 15 for moving the movable frame back and forth is driven, the movable frame 9 positioned at the retreat limit moves forward on the moving member 6 via the linear block 7 while maintaining the cantilever state, and is supported in a pair of front and rear. The front and rear movable pulleys 10 and 11 are moved rapidly in the horizontal plane while maintaining the interval L and the belt 12 is kept in a tension state. It reaches the forward limit position and stops once at that position.
[0024]
Next, by driving the motor 13 for rotating the belt, the plate-like body 17 conveyed from the preceding step on the relay conveyor 25 while rotating the belt 12 of the telescopic conveyor 16 located at the forward limit at a high speed. Transfer. Accordingly, the plate-like body 17 is conveyed forward by the continuous high-speed rotation of the belt 12, and when it reaches the upper part of the deposition position, the upper part thereof comes into contact with the holding conveyor 19. At this time, the front end of the plate-like body 17 comes into contact with the pulley 23. If the pressing member 22 is an air cylinder, the instantaneous impact force at the time of contact is instantly dissipated from the rear of the cylinder chamber to the atmosphere. When the same amount of air flows into the front part of the cylinder chamber, and if it is a spring, the pulley 23 itself returns to the original position immediately after retreating upward in response to the impact by elastic return. Thus, the plate-like body 17 is prevented from being in a non-contact state with the upper belt 21, and the degree of sliding contact with the upper belt 21 is increased. Further, the rotating belt 21 is always brought into contact with the upper surface of the plate-like body 17 by the operation of the individual plate springs 24.
[0025]
When the plate-like body 17 is interposed between the pair of belts 12 and 21, the rotational speed of the upper and lower belts 12 and 21 starts to be synchronously reduced, and the plate-like body 17 is placed at the forward limit position of the telescopic conveyor 16. When the front end reaches, the rotation is stopped. While the plate-like body 17 is interposed between the pair of belts 12 and 21, not only the belt 12 of the stretchable conveyor 16 that conveys the plate-like body 17 but also the belt 21 of the presser conveyor 19 positioned above the belt 12 is described above. Thus, the upper and lower surfaces of the plate-like body 17 are in contact with each other, and the upper and lower surfaces can enjoy substantially the same frictional force, so that the forward inertial force applied to the plate-like body 17 is canceled when the belt is stopped. Will be secured.
[0026]
After the rotation of the upper and lower belts 12 and 21 is stopped, when the prime mover 15 for moving the movable frame forward and backward is driven, the movable frame 9 positioned at the forward limit moves on the moving member 6 via the linear block 7 contrary to the above description. The rear movable pulleys 10 and 11 are moved backward in the horizontal plane while the belt 12 is kept in tension, and retracted from above the lifting platform 18 while the rear movable pulleys 10 and 11 are moved backwards and supported by a pair of front and rear. As a result, the relay conveyor 25 reaches the receiving position of the next plate-like body 17, that is, the retracted position of the telescopic conveyor 16. Since the movable frame 9 is rapidly retracted while maintaining the tension state of the belt 12 during its retreat, the front movable pulley 10 located at the front of the telescopic conveyor 16 rotates in the counterclockwise direction while being plate-shaped. 17 is freely dropped from the front end portion thereof and pulled out, and the fall error of the front and rear portions of the plate-like body 17 is reduced and accumulated. Thereafter, by repeating the above operation, the plate-like body 17 conveyed from the previous step is sequentially deposited on the lifting platform 18 at a high speed, and the detector according to the accumulation amount of the plate-like body 17. The elevator 18 is lowered while maintaining an arbitrary distance from the telescopic conveyor 16 at the forward limit position.
[0027]
Note that the distance L by which the movable frame 9 is moved forward and backward is set on the basis of the length of the plate-like body 17 deposited on the lifting platform 18, and in the above embodiment, the front and rear of the cantilevered movable frame 9 However, the movable frame 9 is not limited to a cantilever shape as in this embodiment, and a linear block is provided before and after the movable frame 9. 7 may be attached and mounted on the moving member 6. In this case, the moving member 6 needs to be laid to the accumulation position which is the forward limit position of the movable frame 9, and the length perpendicular to the conveying direction of the plate-like body 17 is limited to the interval between the opposing moving members 6. Will be. Also, as shown in FIG. 4, the front fixed pulley 4 and the rear movable pulley 5 can be set at a certain distance in the vertical direction and installed in multiple pairs while being folded back in multiple stages, thereby reducing the distance L in the horizontal plane. The installation area can be reduced, and if the two pairs of front fixed pulley 40, rear fixed pulley 50, front movable pulley 100, and rear movable pulley 111 in FIG. 4 are used, the distance in the horizontal plane is L / 2. Become.
[0028]
5 replaces the interval L of the movable frame 9 that advances and retreats in the horizontal plane with a vertical plane, which is a portion of the movable frame 9 that moves forward and backward in the horizontal plane, and advances and retreats in this horizontal plane. It consists of a vertical movable frame 90 portion that replaces the moving distance L within the horizontal plane. That is, a moving member 60 such as a slide rail or a linear way is laid on the vertical line even in the vertical plane, and a linear block 77 is placed on the moving member 60 at an arbitrary interval in the vertical direction. The vertical movable frame 90 is attached so that the lower part is positioned on the front and the vertical line within the interval between the rear fixed pulleys 40 and 50, the front movable pulley 100 is mounted on the front of the movable frame 9, and the vertical movable frame 90 is mounted. The rear movable pulley 111 is installed at the lower part or the upper part as shown in the figure, and the vertical movable frame 90 is at the upper limit position at the forward limit position in the horizontal plane of the movable frame 9, and the vertical at the backward limit position in the horizontal plane of the movable frame 9. If the movable frame 90 is controlled to reach the lower limit position, the installation area in the horizontal plane can be greatly reduced.
[0029]
Furthermore, what is shown in FIG. 6 is a configuration in which a plurality of pairs of rear movable pulleys 111 moving back and forth in a vertical plane are installed while being folded back in multiple stages at an arbitrary interval in the horizontal direction. The distance L in the vertical plane can be reduced, and the installation area in the vertical plane can be reduced. The two pairs of the front fixed pulley 40, the rear fixed pulley 50, the front movable pulley 100 and the rear portion of FIG. In the case of the movable pulley 111, the interval in the horizontal plane is L / 2.
[0030]
7 and 8 show an embodiment in which a plurality of the stretchable conveyors 16 are arranged in series in the transport direction and sorted and deposited according to the grade, type, quality, etc. of the plate-like body 17. In the illustrated example, there are three telescopic conveyors 16 and, for convenience, a method of extending and contracting within the vertical plane shown in FIG. A stand is installed. When there is a clearance between the forward limit position of the movable frame 9 of the telescopic conveyor 16 located at the rear and the rear fixed pulley 5 of the telescopic conveyor 16 located at the front, a transfer conveyor is installed within this clearance, Alternatively, the forward limit position of the movable frame 9 of the telescopic conveyor 16 located at the rear is intended to be transferred to the front of the plate-like body 17 as a position slightly intruded into the rear fixed pulley 5 of the telescopic conveyor 16 located at the front thereof. And
[0031]
In the illustrated example, there is a clearance between the operating position of the movable frame 9 of the telescopic conveyor 16 positioned at the rear and the rear fixed pulley 5 of the telescopic conveyor 16 positioned at the front thereof. This clearance is as described above. A relay conveyor 25 is interposed. This relay conveyor 25 has the same conveying surface as the telescopic conveyor 16 located at the rear, and its rear position is at least in front of the position where the telescopic conveyor 16 located at the rear stops to deposit the plate-like body 17. Will be located. Further, the front position of the relay conveyor 25 is set to a position that does not interfere at least when the movable frame 9 of the telescopic conveyor 16 positioned in front is operated. In addition, by making the conveyance surface of the telescopic conveyor 16 located in front slightly lower than the conveyance surface of the relay conveyor 25, the front of the plate-like body 17 is not affected by the operating state of the telescopic conveyor 16 located in front. When three units are installed in series in the conveyance direction as in the embodiment, the conveyance surface is set to be low over three stages.
[0032]
A carry-in conveyor 27 that enjoys driving of the continuously variable transmission 26 is installed at the rear end position of the telescopic conveyor 16 located at the rearmost part, and a sorting position 28 is installed in the middle of the carry-in conveyor 27, and the pre-stage process. Artificially discriminating the sorting of the plate-like bodies 17 conveyed from the vehicle, or installing a detector that detects the grade, properties, and defects of the plate-like bodies 17, and the plate-like bodies 17 are made up of three elevators 18. A sort signal 29 for sorting and depositing to any one of them is transmitted. In addition, in the clearance between the carry-in conveyor 27 and the start end position of the telescopic conveyor 16 located at the rearmost part, the above-described relay conveyor 25 is similarly installed as shown in the figure, or the carry-in conveyor 27 itself is connected to the relay conveyor 25. Alternatively, the carry-in conveyor 27 may be slightly inserted into the rear fixed pulley 5 of the telescopic conveyor 16.
[0033]
As a control system for sorting and depositing the plate-like bodies 17 that have been classified, the distances from the sorting position 28 on the carry-in conveyor 27 to the lifts 18 are measured as predetermined distances, or When the discriminated plate-like body 17 reaches the lifting platform 18 to be sorted, the operating system of the telescopic conveyor 16 is controlled. Specifically, according to the former, the continuously variable transmission 26 is linked to a pulse transmitter 30 that transmits a pulse amount associated with the drive rotation of the carry-in conveyor 27, and the pulse transmitter 30 is sorted on the carry-in conveyor 27. Each distance from the position 28 to each elevator 18, that is, the distance from S 1, S 2, S 3 in order from the elevator 18 in front of the transport direction is connected to a distance setting unit 31 that is converted into a pulse amount. On the other hand, the sorting signal 29 is linked to the distance setting device 31 and is output to a storage device 32 having a plurality of storage elements built in. The belt 32 is an operating system of the storage device 32 and the telescopic conveyor 16. The motor 13 is connected in series with the motor 15 for moving the frame forward and backward.
[0034]
According to this control circuit, the sorting signal 29 of the plate-like body 17 and the output from the distance setting device 31 converted into the pulse amount are input to the storage device 32, and each storage element in the storage device 32 counts up. At this time, the prime mover 13 for rotating the belt of the telescopic conveyor 16 is stopped, the memory element is reset, and the prime mover 15 for moving the movable frame forward / backward is activated to move the movable frame 9 positioned at the forward limit. is there. In the control circuit, in order to attenuate the inertia of the plate-like body 17 at the stop position by reducing the belt rotation speed of the stretchable conveyor 16 just before stopping on the stretchable conveyor 16 on which the plate-like bodies 17 are sorted and deposited. The distance setting device 31 is connected to the correction setting device 33, and in the course of the accumulated pulse amount, a deceleration command is transmitted to the motor 13 for rotating the belt of the telescopic conveyor 16 in a plurality of stages to convey the plate-like body 17. Speed control corresponding to the position on the way may be performed.
[0035]
As the latter control system, as shown in FIG. 9, a counter 34 is provided on the carry-in conveyor 27 for detecting the plate-like bodies 17 passing through the sort position 28 on the carry-in conveyor 27 in the order of conveyance. The detection signal 35 from the counter 34 is synchronously output every time the sorting signal 29 transmitted from the output 28 is output to each storage element in the storage 32. On the other hand, a detector 36 such as a photoelectric tube and a limit switch for detecting the front end of the plate-like body 17 conveyed on the telescopic conveyor 16 is installed above each elevator 18, and the counter 34, the detector 36 and the memory are installed. When the plate-like body 17 determined at the sorting position 28 on the carry-in conveyor 27 is connected to the elevator 18 to be sorted by the detector 36, the detector 36 detects the operation of the telescopic conveyor 16. The system will be controlled. At this time, if the discriminated plate-like body 17 is deposited on the third elevator 18 which is the foremost part, the detector 36 installed in the first and second units is not used. An output prohibition signal 37 for the operating system of the first and second telescopic conveyors 16 is transmitted from the storage element in the storage device 32, and the plate-like body 17 is continuously rotated. It passes over the belt 12.
[0036]
When the memory element responds to the detector 36, as in the former control system, the prime mover 13 for rotating the belt of the telescopic conveyor 16 is stopped, the memory element is reset, and the prime mover 15 for moving the movable frame back and forth. Is activated to retract the movable frame 9 located at the forward limit. Further, as with the former control system, on the stretchable conveyor 16 on which the plate-like bodies 17 are sorted and deposited, the rotational speed of the belt 12 of the stretchable conveyor 16 just before stopping is reduced, and the inertia of the plate-like body 17 at the stop position. In the case of attenuating the belt, a correction circuit in which a correction detector 38 is arranged in front of the detector 36 is installed, and a deceleration command is transmitted to the prime mover 13 for rotating the belt of the telescopic conveyor 16 in a plurality of stages. Speed control corresponding to the position of the body 17 on the way of conveyance may be performed.
[0037]
In addition, when a plurality of telescopic conveyors 16 are arranged in series in the transport direction and sorted and deposited according to the grade, type, quality, etc. of the plate-like body 17, the vertical plane is expanded and contracted via the vertical movable frame 90. Although a method is adopted, a method in a horizontal plane as shown in FIG. 1 to FIG. 3 may be adopted, and the upper position of the elevator 18 is in contact with the upper surface of the telescopic conveyor 16 at the forward limit position of the movable frame 9. The holding conveyor 19 that can be arranged is arranged, and the drive, deceleration, and stop control of the belt 21 are controlled in the same manner as the motor 13 for rotating the belt of the telescopic conveyor 16 so that the upper and lower surfaces of the plate-like body 17 are almost the same. The same frictional force may be enjoyed, the forward inertial force applied to the plate-like body 17 at the time of stopping may be reduced to the limit, and the deposition operation may be speeded up while ensuring the accuracy of the stopping position.
[0038]
【The invention's effect】
As described above, according to the present invention, the telescopic conveyor is made to stand by in the forward limit state above the stacking position of the plate-like body, and the plate-like body conveyed along with the high-speed rotation on the telescopic conveyor is just before the stacking position. After stopping while decelerating, the movable frame is rapidly retracted while maintaining the tension state of the belt, thereby rotating the movable pulley located at the front of the telescopic conveyor in the counterclockwise direction and pulling out the plate-like body. Since the deposition error is reduced with the front and rear parts of the body being reduced, damage to the plate-like body itself is prevented and the fall distance at the deposition position is reduced, regardless of the nature of the plate-like body, compared to the conventional method described above. In addition, the deposition operation can be further speeded up.
[0039]
In addition, a pressing conveyor that can contact the upper surface of the plate-like body is disposed above the plate-like body deposition position, and the belts of the expansion and contraction conveyors and the holding conveyor can be controlled synchronously. The friction member that can come into contact with the upper surface of the plate-like body is arranged so as to be movable up and down, and the friction member is controlled to descend in synchronization with the stop timing of the belt of the telescopic conveyor, so that not only the lower surface of the plate-like body but also the upper surface thereof. In addition, if substantially the same frictional force is enjoyed, the inertial force applied forward to the plate-like body at the time of stopping can be reduced to the limit, and further stopping position accuracy can be ensured in high-speed deposition work.
[0040]
Furthermore, if a plurality of telescopic conveyors are arranged in series in the transport direction and a sorting signal is sent to the plate-like body passing on the carry-in conveyor according to its grade, type, quality, etc. In addition, regardless of the properties of the plate-like body, it is possible to sort and deposit the plate-like body at an arbitrary deposition position at a high speed while preventing damage to the plate-like body itself.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of the present invention.
FIG. 2 is a side view of FIG.
FIG. 3 is an operation explanatory diagram of an embodiment of the present invention.
FIG. 4 is an operation explanatory diagram of another embodiment of the present invention.
FIG. 5 is an operation explanatory diagram of another embodiment of the present invention.
FIG. 6 is an operation explanatory view of another embodiment of the present invention.
FIG. 7 is an operation explanatory diagram of another embodiment of the present invention.
8 is a plan view of FIG. 7. FIG.
9 is a block diagram of another embodiment of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Machine frame, 2,3 ... Shaft, 4,40 ... Front fixed pulley, 5,50 ... Rear fixed pulley, 6,66 ... Moving member, 7, 77 ... Linear block, 8 ... Connecting beam, 9,90 ... movable frame, 10, 100 ... front movable pulley, 11, 111 ... rear movable pulley, 12 ... belt, 13 ... primary motor for belt rotation, 14 ... drive shaft, 15 ... primary motor for moving / retracting movable frame, 16 ... extension / contraction Conveyor, 17 ... plate-like body, 18 ... lifting platform, 19 ... holding conveyor, 20 ... pulley, 21 ... belt, 22 ... pressing member, 23 ... pulley, 24 ... leaf spring, 25 ... relay conveyor, 26 ... continuously variable transmission 27 ... Carrying conveyor 27, 28 ... Sorting position, 29 ... Sorting signal, 30 ... Pulse transmitter, 31 ... Distance setting device, 32 ... Memory, 33 ... Correction setting device, 34 ... Counter, 35 ... Detection signal, 36 ... Detector, 37 ... Output prohibition signal , 38 ... correction detector.

Claims

A plurality of stretchable conveyors placed in a stretched state are placed in series in the transport direction above the plate stacking position, and a plate-shaped carry-in conveyor is installed at the rear end position of the stretchable conveyor located at the end. The plate-like body is conveyed along with a high-speed rotation on a carry-in conveyor and a plurality of telescopic conveyors,
The movable frame of the telescopic conveyor, which is cantilevered on the upper surface of the machine frame, protrudes to the front to support the front movable pulley, and the machine frame has a front fixed pulley and a rear fixed pulley. At the same time, a vertical movable frame is attached to the machine frame on a vertical line within the distance between the front and rear fixed pulleys, a rear movable pulley is installed below the vertical movable frame, and the movable frame is retracted in the horizontal plane. The installation area is reduced by controlling the vertical movable frame to reach the lower limit position at the limit position,
A sorting position is installed in the middle of the carry-in conveyor to send a sorting signal for sorting and depositing the plate-like body to any of the deposition positions, and the sorting signal is linked to the distance setting device. The output from the motor stops the prime mover for rotating the belt of the telescopic conveyor and activates the prime mover for moving the frame forward and backward.
After the plate-like body conveyed on the plurality of telescopic conveyors arranged is stopped while decelerating just above the deposition position to be sorted , the prime mover for moving the movable frame is driven while maintaining the tension of the belt the movable frame of the telescoping conveyor pulling the plate-like body by Rukoto is rapidly retracted, the deposition of the plate-like body plate-like body, characterized in that the dropping deposited deposition position of the plate member from falling error of the front and rear portions as small Method.

A plurality of stretchable conveyors placed in a stretched state are placed in series in the transport direction above the plate stacking position, and a plate-shaped carry-in conveyor is installed at the rear end position of the stretchable conveyor located at the end. The plate-like body is conveyed along with a high-speed rotation on a carry-in conveyor and a plurality of telescopic conveyors,
The movable frame of the telescopic conveyor, which is cantilevered on the upper surface of the machine frame, protrudes to the front to support the front movable pulley, and the machine frame has a front fixed pulley and a rear fixed pulley. At the same time, a vertical movable frame is attached to the machine frame on a vertical line within the distance between the front and rear fixed pulleys, a rear movable pulley is installed below the vertical movable frame, and the movable frame is retracted in the horizontal plane. The installation area is reduced by controlling the vertical movable frame to reach the lower limit position at the limit position ,
A detector for detecting the front end of the plate-like body conveyed on the telescopic conveyor is installed above the plate-like body deposition position, and a sorting position is installed in the middle of the carry-in conveyor to deposit the plate-like body. A sorting signal for sorting and depositing to any one of the positions is transmitted, and a sorting signal transmitted from the sorting position is output to a storage device. The detector connected to the storage device sorts the plate-like body. When the time when it reaches the accumulation position is detected, the memory responds to this detector, stops the belt rotating prime mover of the telescopic conveyor, and activates the movable frame advance / retreat prime mover of the telescopic conveyor,
After the plate-like body conveyed on the plurality of telescopic conveyors arranged is stopped while decelerating just above the accumulation position to be sorted, the prime mover for driving the movable frame is driven while maintaining the tension of the belt. A method of depositing a plate-like body, wherein the plate-like body is pulled out by rapidly retreating the movable frame of the telescopic conveyor, and the plate-like body is dropped and deposited at a deposition position of the plate-like body with a small drop error at the front and rear portions. .

The stretchable conveyor is made to stand by in a stretched state above the position where the plate-like body is deposited, and the holding conveyor belt is provided with a thickness of the plate-like body spaced from the stretchable conveyor, and the interval between the suspended conveyor belts suspended. A pressing member is arranged inside, and while the plate-like body is interposed within the belt interval between the telescopic conveyor and the holding conveyor, the holding conveyor belt also contacts the upper surface of the plate-like body, and the upper and lower surfaces of this plate-like body are Enjoys friction,
3. When the front end of the plate-like body reaches the advance limit position of the telescopic conveyor, the rotational speed of the belt of the telescopic conveyor and the press conveyor is stopped while synchronously controlling the deceleration. A method for depositing plates.

A pair of front fixed pulley and rear fixed pulley are fixed at regular intervals before and after the machine frame, and the upper part of the machine frame is used as a guide to move forward and backward with respect to the deposition position of the plate-like body located in front. The frame projects to the front and supports the front movable pulley. The machine frame has a vertical movable frame mounted on a vertical line within the space between the front and rear fixed pulleys. A movable pulley is installed, and the belt is folded endlessly between each pulley and suspended endlessly so that the vertical movable frame reaches the lower limit position in the retracted limit position in the horizontal plane of the movable frame with respect to the deposition position of the plate-like body. together constituting the telescopic conveyors to advance and retreat Te,
A plurality of stretchable conveyors placed in a stretched state are placed in series in the transport direction above the plate stacking position, and a plate-shaped carry-in conveyor is installed at the rear end position of the stretchable conveyor located at the end. The plate-like body is conveyed on a carry-in conveyor and a plurality of telescopic conveyors, and a sorting signal for sorting and depositing the plate-like body to any one of the deposition positions is transmitted on the way of the carry-in conveyor. An apparatus for depositing plate-like bodies, wherein a sorting position is installed, and a plate-like body conveyed on the telescopic conveyor is dropped and deposited above the deposition position based on the sorting signal .

The sorting signal transmitted from the sorting position of the carry-in conveyor is linked to a distance setter, and the output from the distance setter is linked to the prime mover for rotating the belt of the telescopic conveyor and the prime mover for moving the movable frame forward and backward. 5. The plate-like body deposition apparatus according to claim 4, wherein the belt rotating prime mover is stopped and the movable frame advancing / retreating prime mover is activated to retract the movable frame .

A detector for detecting the front end of the plate-like body conveyed on the telescopic conveyor is installed above the stacking position of the plate-like body arranged in a plurality of places in series, and is transmitted from the sorting position of the carry-in conveyor. A storage device for outputting a sorting signal for sorting and depositing the plate-like body at any of the deposition positions is provided, and the output of the detector is connected to a storage device storing the sorting signal, and this detector sorts the plate-like body. When detecting when the plate-like body has reached the deposition position, the storage device stops the motor for rotating the belt and activates the motor for moving the movable frame backward to retract the movable frame. Item 5. The plate-like body deposition apparatus according to Item 4 .

Above the position where the plate-like body is deposited, a press conveyor is installed with a thickness interval of the plate-like body between the stretched stretchable conveyor and within the interval between the belts around which the press conveyor belt is suspended. A pressing member is arranged so that friction is exerted on the upper and lower surfaces of the plate-like body interposed within the belt interval between the telescopic conveyor and the press conveyor, and the rotation speed of the belt of the press conveyor is synchronized with the stop timing of the telescopic conveyor. The plate-shaped body deposition apparatus according to claim 4 , wherein the plate-shaped body is stopped while the speed is controlled synchronously .

A plurality of stretchable conveyors placed in a stretched state are placed in series in the transport direction above the plate stacking position, and a plate-shaped carry-in conveyor is installed at the rear end position of the stretchable conveyor located at the end. The plate-like body is carried on a carry-in conveyor and a plurality of stretchable conveyors, and a relay conveyor is installed to transfer the plate-like body between the stretchable conveyors adjacent to each other before and after the plate-like body is conveyed. The plate-shaped body deposition apparatus according to any one of claims 4 to 7, wherein a transport surface of an extendable conveyor positioned in front of the relay conveyor is lower than a transport surface of the relay conveyor .