JP3878084B2 - Belt conveying device and belt conveying system - Google Patents

Belt conveying device and belt conveying system Download PDF

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Publication number
JP3878084B2
JP3878084B2 JP2002222663A JP2002222663A JP3878084B2 JP 3878084 B2 JP3878084 B2 JP 3878084B2 JP 2002222663 A JP2002222663 A JP 2002222663A JP 2002222663 A JP2002222663 A JP 2002222663A JP 3878084 B2 JP3878084 B2 JP 3878084B2
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belt
conveyance
conveying
tension
roller
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JP2004059288A (en
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靖久 望月
高宏 米山
成明 名和
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Toppan Forms Co Ltd
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Toppan Forms Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、所定の搬送体を搬送ベルトにより所定位置に搬送させるベルト搬送装置およびベルト搬送システムに関する。
【0002】
【従来の技術】
近年、所定の製造装置や加工装置では、中間製造物、加工物や最終製造物を所定の位置に搬送する場合に、搬送ベルトにより搬送するベルト搬送装置が使用されることが多い。このベルト搬送装置はベルト駆動ローラに搬送ベルトを懸架させるものであり、ベルト駆動ローラの位置を変化させた場合に当該搬送ベルトの張りが一定とされることが望まれている。
【0003】
従来、例えば、枚葉用紙や冊子の加工装置などにおいては、加工機の給紙と排紙との間の搬送を少なくとも2つのベルト駆動ローラに懸架させた搬送ベルトによって行われることが多い。例えば、用紙等を搬送ベルト上に載置させて搬送したり、また用紙等を2つの搬送ベルトで挾持して搬送することが行われる。ところで、用紙の供給装置や加工機等はその種類や当該装置の製造メーカーによっては高さが異なる場合があり、このような場合には搬送ベルトを傾斜させて設けている。
【0004】
【発明が解決しようとする課題】
しかしながら、搬送ベルトを傾斜させるためにベルト駆動ローラを上下動させると、当該搬送ベルトの張り状態が変化して当該張りを一定とさせることが困難となり、効率的な搬送を行うことができないという問題がある。従来、連続用紙の供給においてテンションをバネの付勢力を利用して調整する方法はあるが、これを搬送ベルトの張り調整に適用しても、バネの伸縮の程度によりベルトに加えられる付勢力が異なって一定の張りを維持させることができず効率的な搬送を行うことができないという問題がある。
【0005】
そこで、本発明は上記課題に鑑みなされたもので、搬送ベルトの張りを保ち、搬送効率の向上を図るベルト搬送装置およびベルト搬送システムを提供することを目的とする。
【0006】
【課題を解決するための手段】
上記課題を解決するために、請求項1の発明では、所定の搬送体を搬送ベルトにより所定の搬送先に搬送するベルト搬送装置であって、前記搬送ベルトを懸架する少なくとも2つのベルト駆動ローラと、前記ベルト駆動ローラを、垂直方向水平方向の何れかに移動させるローラ可動手段と、少なくとも前記ベルト駆動ローラを回転させて前記搬送ベルトを駆動させるベルト駆動手段と、前記ベルト駆動ローラに前記搬送ベルトが懸架されたときに当該搬送ベルトの張りを調整する張り調整手段と、所定の支持部材より前記張り調整手段に付勢部材を設け、当該付勢部材の長さを維持させるべく当該支持部材を可動させて当該張り調整手段を当該搬送ベルトに対して適性張りとさせる張り制御手段と、を有する構成とする。
【0007】
請求項2の発明では、ベルト搬送システムを、所定の搬送体を供給する搬送体供給手段と、供給される前記搬送体を受け取る搬送体受取手段と、前記搬送体供給手段と前記搬送体受取手段との間に、前記請求項1記載のベルト搬送装置が所定数配置され、当該搬送体供給手段から供給される前記搬送体を当該搬送体受取手段に搬送する搬送手段と、を有する構成とする。
【0008】
請求項3、4の発明では、「前記搬送手段は、前記ベルト搬送装置が前記搬送体を載置させて搬送させるべく所定数配置される」構成であり、
「前記搬送手段は、前記ベルト搬送装置を上下二段に配置させて前記搬送体を挾持して搬送させるべく、当該二段のベルト搬送装置が所定数配置される」構成である。
【0009】
このように、移動自在な少なくとも2つのベルト駆動ローラに懸架される搬送ベルトに対して当該搬送ベルトの張りを調整する張り調整手段に対し、支持部材より付勢部材を設け、当該付勢部材の長さを維持させるべく当該支持部材を可動させることで当該張り調整手段による搬送ベルトの張りを適正化させる。すなわち、ベルト駆動ローラが可動されて搬送ベルトの張りが変化しても付勢部材の長さが維持されることから当該搬送ベルトの張りを保つことが可能となり、テンションローラによる搬送ベルトの張りが適正化されて搬送効率の向上を図ることが可能となるものである。
【0010】
【発明の実施の形態】
以下、本発明の好ましい実施形態を図により説明する。
図1に、本発明に係るベルト搬送装置の構成図を示す。図1(A)はベルト搬送装置の原理説明図、図1(B)は張り制御手段の一例を示した概略図である。図1(A)において、ベルト搬送装置11は、ベルト駆動ローラ12,13およびテンションローラ14間に搬送ベルト16が懸架される構成のものである。ベルト駆動ローラ12,13は図2で説明する。
【0011】
図1(B)に示すように、上記テンションローラ14は、ベアリング等の軸受15A,15B内に回転自在に設けられもので、当該テンションローラ14および軸受15A,15Bにより張り調整手段が構成される。当該軸受15A,15Bには、コイルバネ等の付勢部材18A,18Bが設けられ、当該付勢部材18A,18Bは位置センサ19を介して所定の支持部材17に取り付けられる。位置センサ19は、上記付勢部材18A,18Bの長さを検出するのもで、その検出信号は後述のモータコントローラに送られる。
【0012】
また、上記支持部材17は可動モータ20により上下動される。一例として、当該可動モータ20の回転軸の先端にはピニオン21が取り付けられ、このピニオン21と係合するもので、垂直方向に設けられて一端が上記支持部材17と固着されたラック22により当該支持部材17を上下動させる。この可動モータ20は、モータコントローラ23により回転制御されるもので、当該モータコントローラ23は上記位置センサ19からの検出信号に基づいて当該可動モータ20の回転量を制御する。すなわち、上記支持部材17、付勢部材18A,18B、位置センサ19、可動モータ20、ピニオン21、ラック22およびモータコントローラ23により張り制御手段が構成される。なお、上記テンションローラ14をラックアンドピニオン方式で上下動させているが、これによらずに他の機械方式であってもよい。
【0013】
そこで、図2に、図1におけるベルト駆動ローラの動作原理の説明図を示す。図2(A)は各ローラを垂直方向に移動させるローラ可動手段およびベルト駆動手段の一例を示した概略図、図2(B)はベルト駆動手段によるベルト駆動の概念図である。図2(A)、(B)において、ベルト駆動ローラ12,13のそれぞれは、可動軸12A,13Aに対して例えばベアリング等により回転自在とされる。すなわち、ベルト駆動ローラ12,13間の角度による搬送ベルト16の角度で後述の搬送体の搬送角度が決定されるもので、当該ベルト駆動ローラ12,13間で懸架される搬送ベルト16の張りを上記テンションローラ14で好適とさせる。
【0014】
上記のように、ベルト駆動ローラ12,13間に角度を持たせる場合には、各ローラは垂直方向に可動されて移動される。例えば、ベルト駆動ローラ12の可動は、可動モータ31Aにより上下動され、図示しないがベルト駆動ローラ13においても可動モータ32Aにより上下動される。すなわち、可動モータ31Aの回転軸の先端にはピニオン41Aが取り付けられ、このピニオン41Aと係合するもので、垂直方向に設けられて一端が稼働軸12Aと固着されたラック43Aにより当該ベルト駆動ローラ12を上下動させる。
【0015】
また、図示しないが、上記ベルト駆動ローラ13においても同様に可動モータ32Aと、ピニオン42Aと、ラック44Aにより上下動される。これら可動モータ31A,32Aおよびピニオン41A,42Aとラック44A,45Aとによりローラ可動手段を構成する。
【0016】
なお、上記ローラ可動手段は、上記のようにラックアンドピニオン方式によらずに、他の機械的方式であってもよく、また、例えばレバーとロック機構を適宜設けることで手動によって上下動させることとしてもよいものである。
【0017】
一方、図2(A)、(B)に示すように、ベルト駆動ローラ12,13、テンションローラ14およびベルト駆動モータ51の回転軸52A(52B)との間で駆動ベルト53が懸架される。すなわち、ベルト駆動モータ51を回転させることでベルト駆動ローラ12,13およびテンションローラ14が回転され、これらに懸架されている搬送ベルト16が回転されるものである。なお、上記駆動ベルト53は、少なくともベルト駆動ローラ12,13のみに懸架させることによっても搬送ベルト16を回転させることができるものである。
【0018】
続いて、図3に、図1および図2のベルト搬送装置におけるベルト張り調整の説明図を示す。図3(A)において、ベルト駆動ローラ12,13が水平状態とされ、それにしたがって搬送ベルト16の搬送部分も水平状態とされている。このとき、テンションローラ14は、位置センサ19で長さが所定長(L)に維持された付勢部材18A(18B)からの付勢力で押圧されており、当該搬送ベルト16を適性張りとさせている。
【0019】
そこで、搬送ベルト16の搬送部分を所定角度(右上がり傾斜)にすべく、たとえばベルト駆動ローラ12をそのままとし、ベルト駆動ローラ13を上方に当該搬送部分を所定角度となるように所定量上昇させると、テンションローラ14が当該搬送ベルト16により上昇され、その上昇分だけ付勢部材18A(18B)が圧縮されて長さがたとえば「L1」となる。
【0020】
付勢部材18A(18B)の長さ「L1」は位置センサ19によって検出され、その検出信号に基づいて上記モータコントローラ23が付勢部材18A(18B)を当初の長さ「L」とさせるために支持部材17を上昇(上昇量「L−L1」)させる回転駆動量で可動モータ20を回転させる。すなわち、付勢部材18A(18B)が当初の長さ「L」となることで、長さ「L」に応じた付勢力をテンションローラ14に加えることとなり、これによって搬送ベルト16の張りを当初の張りと同じとさせるものである。
【0021】
また、図3(B)に示すように、図3(A)の初期状態より搬送ベルト16の搬送部分を所定角度(右下がり傾斜)にすべく、たとえばベルト駆動ローラ12をそのままとし、ベルト駆動ローラ13を下方に当該搬送部分を所定角度となるように所定量下降させると、テンションローラ14が当該搬送ベルト16により下降され、その下降分だけ付勢部材18A(18B)が伸長されて長さがたとえば「L2」となる。
【0022】
付勢部材18A(18B)の長さ「L2」は位置センサ19によって検出され、その検出信号に基づいて上記モータコントローラ23が付勢部材18A(18B)を当初の長さ「L」とさせるために支持部材17を下降(下降量「L2−L」)させる回転駆動量で可動モータ20を回転させる。すなわち、付勢部材18A(18B)が当初の長さ「L」となることで、長さ「L」に応じた付勢力をテンションローラ14に加えることとなり、これによって搬送ベルト16の張りを当初の張りと同じとさせるものである。
【0023】
次に、図4および図5に、本発明に係るベルト搬送装置が適用される一例の単片シート搬送加工システムの概略説明図を示す。図4において、単片シート搬送加工システム61Aは、搬送体であるたとえばシート62を供給する搬送体供給手段であるシート供給装置63が備えられる。このシート供給装置63上には、所定数の搬送体であるシート(枚葉用紙)群62Aが積み重ねられており、供給ローラ64によりシート62を枚葉ずつ供給する。この場合、例えば1枚のシート62が供給されると残りのシート群62Aが上昇して供給位置を一定とさせる。一方、当該シート62を加工する搬送体受取手段である折り装置のような加工装置65が備えられるもので、この加工装置65は、適宜搬送部65Aおよび加工部65Bを備える。
【0024】
上記シート供給装置63と加工装置65との間に、上記図1(A)に示す1つのベルト搬送装置11が搬送手段として配設される。この場合、シート供給装置63におけるシート62の供給位置と、加工装置65における搬送部65Aのシート受取位置とが同じ高さである場合として、各ベルト搬送装置11の搬送ベルト15の搬送部分は水平状態で設定され、各ベルト駆動ローラ12,13も互いに水平位置とされたものである。そして、搬送ベルト16には、テンションローラ14により好適な張り状態とされている。そこで、シート供給装置63より順次供給ローラ64により供給されたシート62は、ベルト搬送装置11により搬送ベルト16上に載置されて順次搬送され、加工装置65の搬送部65上に排紙されることにより、当該加工装置65の加工部65Bで所定の加工を行うものである。
【0025】
また、図5において、単片シート搬送加工システム61Bは、加工装置66の搬送部66Aの高さがシート供給装置63の高さより高い場合、例えばベルト搬送装置11のベルト駆動ローラ12をシート供給装置63の供給位置とさせ、搬送ベルト16の搬送部分を搬送部66Aの高さまでの所定角度(右上がり傾斜)にすべく、ベルト駆動ローラ13を上方に当該搬送部分を所定角度となるように所定量上昇させ、これに応じて支持部材17を上昇させることにより、搬送ベルト16の張りを当初設定の張りとさせている。
【0026】
すなわち、シート62をシート供給装置63の供給位置より加工装置66の搬送部66Aまで搬送させるために、ベルト駆動ローラ13を上昇させても搬送ベルト16の張りを当初設定(付勢部材18A,18Bの当初の長さ)の好適な状態とさせることができるものである。そして、シート供給装置63より供給されるシート62が、ベルト搬送装置11上に載置されて搬送され、加工装置66の搬送部66A上に排紙されるものである。
【0027】
なお、図5ではシート62を右上がり方向に搬送させる場合を示しているが、右下がり方向に搬送させる場合でも同様である。また、搬送ベルト16を逆回転させることもできるものである。さらに、上記例ではシート供給装置63と加工装置66との間に1つのベルト搬送装置11を配置した場合を示したが、これら装置間の距離や、搬送軌跡によってはその数を増減させることができるものである。
【0028】
このように、ベルト駆動ローラ13が可動されて搬送ベルト16の張りが変化しても付勢部材18A,18Bの長さが維持されることから当該搬送ベルト16の張りを保つことができ、テンションローラ14による搬送ベルト16の張りが適正化されて搬送効率の向上を図ることができるものである。
【0029】
ところで、搬送体62として、上記シート(枚葉用紙)を示したが、そのほかに冊子、ICカード、ICフォーム(ICカードとされる前の状態)、フィルム、カード、プラスチック製品等であっても適用することができ、上記システムとしてこれら搬送体を供給する搬送体供給装置を備えさせ、排出先で所定の加工やスタック等を行わせる印刷装置やスタッカ等を備えさせるシステムとすることにより適用することができるものである。
【0030】
次に、図6に、単片シート搬送加工システムおける他の構成の説明図を示す。図6(A)は図4に対応したベルト搬送装置の搬送状態を示したもので、図6(B)は図5に対応したベルト搬送装置の搬送状態を示したものである。図6(A)に示すベルト搬送装置は、図4のベルト搬送機構(ベルト搬送装置11)を、互いに搬送ベルト16の搬送部分を所定間隔(シート62の厚さの間隔)で対峙させて構成させ、これをシート供給装置63と加工装置66との間に配設させたものである。ここでは、上下の各ベルト搬送装置11は、同一要素で構成させたものであり、同一の符号を付してある。
【0031】
そして、各ベルト搬送装置11,11は、テンションローラ14,14が付勢部材18A,18B(18A,18B)からの一定の付勢力で付勢されることにより好適な張りの状態とされている。すなわち、図4の例でいえば、シート供給装置63より供給されるシート62を当該ベルト搬送装置11,11の各搬送ベルト14,14に挾持させて搬送し、加工装置64の搬送部64Aに排出させるものである。
【0032】
また、図6(B)に示すベルト搬送装置は、図5のベルト搬送機構(ベルト搬送装置11)を、互いに搬送ベルト16の搬送部分を所定間隔(シート62の厚さの間隔)で対峙させて構成させ、これをシート供給装置63と加工装置66との間に配設させたものである。ここでは、上下の各ベルト搬送装置11は、同一要素で構成させたものであり、同一の符号を付してある。
【0033】
この場合、各ベルト搬送装置11,11は、図6(A)に示すベルト搬送装置11,11のベルト駆動ローラ13,13を上昇させて搬送部分を右上がり傾斜させたもので、テンションローラ14,14が付勢部材18A,18B(18A,18B)からの一定の付勢力で付勢されることにより好適な張りの状態とされている。すなわち、図5の例でいえば、シート供給装置63より供給されるシート62を当該ベルト搬送装置11,11の各搬送ベルト14,14に挾持させて加工装置66のシート供給位置より高い位置の搬送部66Aまで搬送させるものである。
【0034】
上記図6(A)、(B)に示すように搬送体を搬送ベルト16,16に挾持させて搬送させる場合であっても、上記同様にベルト駆動ローラ13,13が可動されて搬送ベルト16,16の張りが変化しても付勢部材18A,18B(18A,18B)の長さが維持されることから当該搬送ベルト16,16の張りを保つことができ、テンションローラ14,14による搬送ベルト16,16の張りが適正化されて搬送効率の向上を図ることができるものである。
【0035】
次に、図7に、本発明に係るベルト搬送装置における他の構成の説明図を示す。図7(A)〜(C)に示すベルト搬送装置11は、その基本構成は図1(A)のベルト搬送装置11と同様であるが、ベルト駆動ローラ12,13(何れかだけでもよい)を水平方向に移動可能とし、テンションローラ14(支持部材17、付勢部材18A,18Bおよび位置センサ19)を垂直方向に移動可能としたものである。この場合のベルト駆動ローラ12,13の水平可動は、例えば図2(A)に示すラックアンドピニオン方式を水平方向に移動させるべく配置させればよい。
【0036】
すなわち、たとえば図7(B)に示すように、ベルト駆動ローラ12を水平方向に移動させると、テンションローラ14が当該搬送ベルト16により上昇され、その上昇分だけ付勢部材18A(18B)が圧縮される。そして、図7(C)に示すように、付勢部材18A(18B)の長さが位置センサ19によって検出され、その検出信号に基づいて上記モータコントローラ23が付勢部材18A(18B)を当初の長さとさせるために支持部材17を上昇させる回転駆動量で可動モータ20を回転させることにより、付勢部材18A(18B)が当初の長さとなり、これに応じた付勢力をテンションローラ14に加えることとなる。
【0037】
これによって搬送ベルト16の張りを当初の張りを維持させることができるものである。このことは、付勢部材18A,18Bを伸ばす方向にベルト駆動ローラ12を水平移動させた場合も同様であり、一方で、ベルト駆動ローラ13を水平移動させた場合も同様である。
【0038】
上記構成は、特に図4や図5に示す単片シート搬送加工システム61A,61Bにおいて、シート供給装置63と加工装置65,66間の距離が設置スペース上の問題で変化した場合に有効である。なお、ベルト駆動ローラ12,13は、上記のような水平移動と図1および図2で示すような垂直移動の両方を行わせることとしてもよい。また、図6に示すように搬送体を挾持させて搬送させる場合であっても適用することができるものである。
【0039】
ところで、上記実施形態では、ベルト駆動ローラ12,13の移動による付勢部材18A,18Bの長さ変化を位置センサ19によって検出する場合を示したが、上記付勢部材18A,18Bの変化を、たとえば圧力センサで検出することによっても実現することができるものである。また、上記実施形態では、ベルト搬送装置11を構成するにあたってテンションローラの他に2つのベルト駆動ローラを使用した場合を示したが、3つ以上のベルト駆動ローラで構成してもよいことはもちろんである。
【0040】
【発明の効果】
以上のように、移動自在な少なくとも2つのベルト駆動ローラに懸架される搬送ベルトに対して当該搬送ベルトの張りを調整する張り調整手段に対し、支持部材に取り付けられた付勢部材を設け、当該付勢部材の長さを維持させるべく当該支持部材を可動させることで搬送ベルトの張りを保ち、当該テンションローラによる搬送ベルトの張りを常に適正化させることにより、搬送効率の向上を図ることができるものである。
【図面の簡単な説明】
【図1】本発明に係るベルト搬送装置の構成図である。
【図2】図1におけるベルト駆動ローラの動作原理の説明図である。
【図3】図1および図2のベルト搬送装置におけるベルト張り調整の説明図である。
【図4】本発明に係るベルト搬送装置が適用される一例の単片シート搬送加工システムの概略説明図(1)である。
【図5】本発明に係るベルト搬送装置が適用される一例の単片シート搬送加工システムの概略説明図(2)である。
【図6】単片シート搬送加工システムおける他の構成の説明図である。
【図7】本発明に係るベルト搬送装置における他の構成の説明図である。
【符号の説明】
11 ベルト搬送装置
12,13 ベルト駆動ローラ
14 テンションローラ
15 軸受
16 搬送ベルト
17 支持部材
18 付勢部材
19 位置センサ
20,31,32 可動モータ
61 単片シート搬送加工システム
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a belt conveyance device and a belt conveyance system for conveying a predetermined conveyance body to a predetermined position by a conveyance belt.
[0002]
[Prior art]
In recent years, in a predetermined manufacturing apparatus and processing apparatus, when an intermediate product, a processed product, and a final product are transported to a predetermined position, a belt transport apparatus that transports by a transport belt is often used. This belt conveying device suspends the conveying belt on the belt driving roller, and it is desired that the tension of the conveying belt is made constant when the position of the belt driving roller is changed.
[0003]
2. Description of the Related Art Conventionally, for example, in a sheet processing device or a booklet processing apparatus, the transport between a paper feed and a paper discharge of a processing machine is often performed by a transport belt suspended on at least two belt drive rollers. For example, a sheet or the like is transported by being placed on a transport belt, or the sheet or the like is transported by being held by two transport belts. By the way, the height of the paper supply device, the processing machine, and the like may differ depending on the type and the manufacturer of the device, and in such a case, the conveyance belt is provided with an inclination.
[0004]
[Problems to be solved by the invention]
However, if the belt drive roller is moved up and down to incline the conveyor belt, the tension state of the conveyor belt changes and it becomes difficult to make the tension constant, and efficient conveyance cannot be performed. There is. Conventionally, there is a method of adjusting the tension using the biasing force of the spring in the continuous paper supply, but even if this is applied to the tension adjustment of the conveying belt, the biasing force applied to the belt is not enough depending on the degree of expansion and contraction of the spring. There is a problem that a constant tension cannot be maintained differently and efficient conveyance cannot be performed.
[0005]
Accordingly, the present invention has been made in view of the above problems, and an object thereof is to provide a belt conveyance device and a belt conveyance system that maintain the tension of the conveyance belt and improve the conveyance efficiency.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, in the invention of claim 1, a belt conveying device that conveys a predetermined conveying body to a predetermined conveying destination by a conveying belt, wherein at least two belt driving rollers for suspending the conveying belt are provided. Roller moving means for moving the belt driving roller in either the vertical direction or the horizontal direction , belt driving means for driving the conveying belt by rotating at least the belt driving roller, and conveying the belt driving roller to the belt driving roller. Tension adjusting means for adjusting the tension of the conveyor belt when the belt is suspended, and a biasing member provided on the tension adjusting means from a predetermined support member, and the support member to maintain the length of the biasing member And tension control means for making the tension adjusting means suitable for the conveyor belt.
[0007]
According to a second aspect of the present invention, the belt transport system includes a transport body supply means for supplying a predetermined transport body, a transport body receiving means for receiving the supplied transport body, the transport body supply means, and the transport body receiving means. A predetermined number of the belt conveying devices according to claim 1 and a conveying unit configured to convey the conveying member supplied from the conveying member supply unit to the conveying member receiving unit. .
[0008]
In the inventions of claims 3 and 4, "the conveying means is arranged in a predetermined number so that the belt conveying device places and conveys the conveying body",
“The conveying means is configured such that a predetermined number of the two-stage belt conveying devices are arranged so that the belt conveying devices are arranged in two upper and lower stages to hold and convey the conveying body”.
[0009]
Thus, a biasing member is provided from the support member to the tension adjusting means for adjusting the tension of the conveyor belt with respect to the conveyor belt suspended by at least two movable belt drive rollers. By moving the support member to maintain the length, the tension of the conveyor belt by the tension adjusting means is optimized. That is, even if the belt driving roller is moved and the tension of the conveyor belt changes, the length of the biasing member is maintained, so that the tension of the conveyor belt can be maintained, and the tension of the conveyor belt by the tension roller is maintained. It is made appropriate to improve the conveyance efficiency.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a configuration diagram of a belt conveyance device according to the present invention. FIG. 1A is a diagram illustrating the principle of the belt conveyance device, and FIG. 1B is a schematic diagram illustrating an example of a tension control unit. In FIG. 1A, the belt conveying device 11 has a configuration in which a conveying belt 16 is suspended between belt driving rollers 12 and 13 and a tension roller 14. The belt driving rollers 12 and 13 will be described with reference to FIG.
[0011]
As shown in FIG. 1B, the tension roller 14 is rotatably provided in bearings 15A and 15B such as bearings, and the tension roller 14 and the bearings 15A and 15B constitute tension adjusting means. . The bearings 15A and 15B are provided with biasing members 18A and 18B such as coil springs, and the biasing members 18A and 18B are attached to a predetermined support member 17 via a position sensor 19. The position sensor 19 detects the length of the urging members 18A and 18B, and the detection signal is sent to a motor controller described later.
[0012]
The support member 17 is moved up and down by the movable motor 20. As an example, a pinion 21 is attached to the tip of the rotating shaft of the movable motor 20 and is engaged with the pinion 21. The rack 22 is provided in a vertical direction and has one end fixed to the support member 17. The support member 17 is moved up and down. The rotation of the movable motor 20 is controlled by a motor controller 23, and the motor controller 23 controls the amount of rotation of the movable motor 20 based on a detection signal from the position sensor 19. That is, the support member 17, the urging members 18A and 18B, the position sensor 19, the movable motor 20, the pinion 21, the rack 22 and the motor controller 23 constitute a tension control means. The tension roller 14 is moved up and down by the rack and pinion method, but other mechanical methods may be used instead.
[0013]
FIG. 2 is an explanatory diagram of the operation principle of the belt driving roller in FIG. FIG. 2A is a schematic diagram showing an example of roller moving means and belt driving means for moving each roller in the vertical direction, and FIG. 2B is a conceptual diagram of belt driving by the belt driving means. 2A and 2B, each of the belt driving rollers 12 and 13 is rotatable with respect to the movable shafts 12A and 13A, for example, by a bearing or the like. That is, the conveyance angle of the conveyance body described later is determined by the angle of the conveyance belt 16 by the angle between the belt drive rollers 12 and 13, and the tension of the conveyance belt 16 suspended between the belt drive rollers 12 and 13 is determined. The tension roller 14 is suitable.
[0014]
As described above, when an angle is provided between the belt driving rollers 12 and 13, each roller is moved and moved in the vertical direction. For example, the belt drive roller 12 is moved up and down by a movable motor 31A, and although not shown, the belt drive roller 13 is also moved up and down by a movable motor 32A. That is, a pinion 41A is attached to the tip of the rotating shaft of the movable motor 31A, and engages with the pinion 41A. The belt driving roller is provided by a rack 43A provided in the vertical direction and having one end fixed to the operating shaft 12A. 12 is moved up and down.
[0015]
Although not shown, the belt drive roller 13 is similarly moved up and down by the movable motor 32A, the pinion 42A, and the rack 44A. These movable motors 31A, 32A, pinions 41A, 42A and racks 44A, 45A constitute roller movable means.
[0016]
The roller moving means may be other mechanical methods instead of the rack and pinion method as described above, and may be manually moved up and down by appropriately providing a lever and a lock mechanism, for example. It is good.
[0017]
On the other hand, as shown in FIGS. 2A and 2B, the drive belt 53 is suspended between the belt drive rollers 12 and 13, the tension roller 14, and the rotation shaft 52 </ b> A (52 </ b> B) of the belt drive motor 51. That is, by rotating the belt drive motor 51, the belt drive rollers 12, 13 and the tension roller 14 are rotated, and the conveying belt 16 suspended from these is rotated. The driving belt 53 can also rotate the conveying belt 16 by being suspended only at least by the belt driving rollers 12 and 13.
[0018]
Next, FIG. 3 shows an explanatory diagram of belt tension adjustment in the belt conveyance device of FIGS. 1 and 2. In FIG. 3A, the belt drive rollers 12 and 13 are in a horizontal state, and the conveyance portion of the conveyance belt 16 is also in a horizontal state accordingly. At this time, the tension roller 14 is pressed by the urging force from the urging member 18A (18B) whose length is maintained at the predetermined length (L) by the position sensor 19, and the conveying belt 16 is appropriately stretched. ing.
[0019]
Therefore, in order to set the conveying portion of the conveying belt 16 to a predetermined angle (inclining to the right), for example, the belt driving roller 12 is left as it is, and the belt driving roller 13 is moved upward by a predetermined amount so that the conveying portion becomes a predetermined angle. Then, the tension roller 14 is raised by the conveyor belt 16, and the urging member 18A (18B) is compressed by that amount, and the length becomes, for example, “L1”.
[0020]
The length “L1” of the biasing member 18A (18B) is detected by the position sensor 19, and the motor controller 23 sets the biasing member 18A (18B) to the initial length “L” based on the detection signal. Then, the movable motor 20 is rotated by a rotational drive amount that raises the support member 17 (the amount of increase “L-L1”). That is, when the urging member 18A (18B) has the initial length “L”, an urging force corresponding to the length “L” is applied to the tension roller 14, thereby tensioning the conveyor belt 16 at the beginning. It is the same as the tension.
[0021]
Further, as shown in FIG. 3B, for example, the belt driving roller 12 is left as it is to drive the belt so that the conveying portion of the conveying belt 16 has a predetermined angle (inclined to the right) from the initial state of FIG. When the roller 13 is lowered downward by a predetermined amount so that the conveying portion has a predetermined angle, the tension roller 14 is lowered by the conveying belt 16, and the urging member 18A (18B) is extended by the amount corresponding to the lowered amount. Becomes “L2”, for example.
[0022]
The length “L2” of the biasing member 18A (18B) is detected by the position sensor 19, and the motor controller 23 sets the biasing member 18A (18B) to the initial length “L” based on the detection signal. Then, the movable motor 20 is rotated by a rotational drive amount that lowers the support member 17 (lowering amount “L2-L”). That is, when the urging member 18A (18B) has the initial length “L”, an urging force corresponding to the length “L” is applied to the tension roller 14, thereby tensioning the conveyor belt 16 at the beginning. It is the same as the tension.
[0023]
Next, FIGS. 4 and 5 are schematic explanatory views of an example single-piece sheet conveyance processing system to which the belt conveyance device according to the present invention is applied. In FIG. 4, the single-piece sheet conveyance processing system 61 </ b> A includes a sheet supply device 63 that is a conveyance body supply unit that supplies a sheet 62 that is a conveyance body. On this sheet supply device 63, a predetermined number of sheet (sheet-fed paper) groups 62A which are conveying members are stacked, and the sheet 62 is supplied sheet by sheet by a supply roller 64. In this case, for example, when one sheet 62 is supplied, the remaining sheet group 62A is raised to make the supply position constant. On the other hand, a processing device 65 such as a folding device that is a transport body receiving means for processing the sheet 62 is provided. The processing device 65 includes a transport unit 65A and a processing unit 65B as appropriate.
[0024]
Between the sheet supply device 63 and the processing device 65, one belt conveyance device 11 shown in FIG. 1A is disposed as a conveyance means. In this case, assuming that the supply position of the sheet 62 in the sheet supply device 63 and the sheet receiving position of the conveyance unit 65A in the processing device 65 are the same height, the conveyance portion of the conveyance belt 15 of each belt conveyance device 11 is horizontal. The belt driving rollers 12 and 13 are also set in a horizontal position. The conveyor belt 16 is in a suitable tension state by the tension roller 14. Accordingly, the sheets 62 sequentially supplied from the sheet supply device 63 by the supply roller 64 are placed on the conveyance belt 16 by the belt conveyance device 11 and sequentially conveyed, and are discharged onto the conveyance unit 65 of the processing device 65. Thus, the predetermined processing is performed by the processing unit 65B of the processing device 65.
[0025]
In FIG. 5, when the height of the conveyance unit 66 </ b> A of the processing device 66 is higher than the height of the sheet supply device 63, the single-piece sheet conveyance processing system 61 </ b> B uses, for example, the belt driving roller 12 of the belt conveyance device 11. 63, the belt drive roller 13 is moved upward so that the conveyance portion is at a predetermined angle so that the conveyance portion of the conveyance belt 16 is at a predetermined angle up to the height of the conveyance portion 66A. By raising the fixed amount and raising the support member 17 accordingly, the tension of the conveyor belt 16 is set to the initially set tension.
[0026]
That is, in order to convey the sheet 62 from the supply position of the sheet supply device 63 to the conveyance unit 66A of the processing device 66, even if the belt driving roller 13 is raised, the tension of the conveyance belt 16 is initially set (biasing members 18A and 18B). (The original length) can be in a suitable state. The sheet 62 supplied from the sheet supply device 63 is placed on the belt conveyance device 11 and conveyed, and is discharged onto a conveyance unit 66A of the processing device 66.
[0027]
FIG. 5 shows the case where the sheet 62 is conveyed in the right upward direction, but the same applies to the case where the sheet 62 is conveyed in the right downward direction. Further, the conveyor belt 16 can be rotated in the reverse direction. Furthermore, although the case where one belt conveying device 11 is disposed between the sheet supply device 63 and the processing device 66 has been described in the above example, the number can be increased or decreased depending on the distance between these devices or the conveying trajectory. It can be done.
[0028]
In this way, even when the belt driving roller 13 is moved and the tension of the conveyor belt 16 changes, the length of the biasing members 18A and 18B is maintained, so that the tension of the conveyor belt 16 can be maintained. The tension of the conveyor belt 16 by the roller 14 is optimized, and the efficiency of conveyance can be improved.
[0029]
By the way, although the said sheet | seat (sheet-fed paper) was shown as the conveyance body 62, even if it is a booklet, IC card, IC form (state before being made into an IC card), a film, a card, a plastic product, etc. It can be applied, and is applied by providing a transport body supply device that supplies these transport bodies as the system, and a system that includes a printing device, a stacker, or the like that performs predetermined processing or stacking at a discharge destination. It is something that can be done.
[0030]
Next, FIG. 6 shows an explanatory diagram of another configuration in the single-piece sheet conveyance processing system. 6A shows the conveyance state of the belt conveyance device corresponding to FIG. 4, and FIG. 6B shows the conveyance state of the belt conveyance device corresponding to FIG. The belt conveyance device shown in FIG. 6A is configured by the belt conveyance mechanism (belt conveyance device 11) of FIG. 4 with the conveyance portions of the conveyance belt 16 facing each other at a predetermined interval (the interval of the thickness of the sheet 62). This is disposed between the sheet supply device 63 and the processing device 66. Here, the upper and lower belt conveyors 11 are constituted by the same elements, and are given the same reference numerals.
[0031]
Each of the belt conveying devices 11 and 11 is in a suitable tension state by the tension rollers 14 and 14 being urged by a constant urging force from the urging members 18A and 18B (18A and 18B). . That is, in the example of FIG. 4, the sheet 62 supplied from the sheet supply device 63 is conveyed while being held by the conveyance belts 14 and 14 of the belt conveyance devices 11 and 11, and is conveyed to the conveyance unit 64 </ b> A of the processing device 64. It is what is discharged.
[0032]
In the belt conveyance device shown in FIG. 6B, the belt conveyance mechanism (belt conveyance device 11) in FIG. 5 causes the conveyance portions of the conveyance belt 16 to face each other at a predetermined interval (the thickness interval of the sheet 62). This is configured between the sheet supply device 63 and the processing device 66. Here, the upper and lower belt conveyors 11 are constituted by the same elements, and are given the same reference numerals.
[0033]
In this case, each of the belt conveying devices 11 and 11 is configured to raise the belt driving rollers 13 and 13 of the belt conveying devices 11 and 11 shown in FIG. , 14 is urged by a constant urging force from the urging members 18A, 18B (18A, 18B), thereby providing a suitable tension state. In other words, in the example of FIG. 5, the sheet 62 supplied from the sheet supply device 63 is held between the conveyance belts 14 and 14 of the belt conveyance devices 11 and 11 and is positioned higher than the sheet supply position of the processing device 66. It conveys to the conveyance part 66A.
[0034]
As shown in FIGS. 6A and 6B, the belt driving rollers 13 and 13 are moved in the same manner as described above even when the conveyance body is held by the conveyance belts 16 and 16 and conveyed. The tension of the urging members 18A and 18B (18A and 18B) is maintained even if the tension of the belts 16 and 16 changes, so that the tension of the conveyor belts 16 and 16 can be maintained. The tension of the belts 16 and 16 can be optimized and the conveyance efficiency can be improved.
[0035]
Next, FIG. 7 shows an explanatory diagram of another configuration in the belt conveyance device according to the present invention. The basic configuration of the belt conveyance device 11 shown in FIGS. 7A to 7C is the same as that of the belt conveyance device 11 in FIG. 1A, but the belt drive rollers 12 and 13 (any one may be used). The tension roller 14 (support member 17, urging members 18A and 18B and position sensor 19) can be moved in the vertical direction. The horizontal movement of the belt drive rollers 12 and 13 in this case may be arranged to move the rack and pinion system shown in FIG. 2A in the horizontal direction, for example.
[0036]
That is, for example, as shown in FIG. 7B, when the belt driving roller 12 is moved in the horizontal direction, the tension roller 14 is raised by the conveyor belt 16, and the urging member 18A (18B) is compressed by that amount. Is done. Then, as shown in FIG. 7C, the length of the biasing member 18A (18B) is detected by the position sensor 19, and based on the detection signal, the motor controller 23 initially moves the biasing member 18A (18B). When the movable motor 20 is rotated by a rotational drive amount that raises the support member 17 so that the length of the urging member 18 becomes longer, the urging member 18A (18B) becomes the initial length, and the urging force corresponding to this is applied to the tension roller 14. Will be added.
[0037]
As a result, the initial tension of the conveyor belt 16 can be maintained. This is the same when the belt drive roller 12 is horizontally moved in the direction in which the urging members 18A and 18B are extended, and the same is true when the belt drive roller 13 is horizontally moved.
[0038]
The above configuration is particularly effective when the distance between the sheet supply device 63 and the processing devices 65 and 66 changes due to a problem in the installation space in the single-piece sheet conveyance processing systems 61A and 61B shown in FIGS. . The belt driving rollers 12 and 13 may perform both the horizontal movement as described above and the vertical movement as shown in FIGS. Moreover, even if it is a case where it conveys a conveyance body as shown in FIG. 6, it can apply.
[0039]
By the way, in the said embodiment, although the case where the length change of biasing member 18A, 18B by the movement of the belt drive rollers 12 and 13 was detected by the position sensor 19 was shown, the change of said biasing member 18A, 18B is shown. For example, it can be realized by detecting with a pressure sensor. Further, in the above-described embodiment, the case where two belt drive rollers are used in addition to the tension roller in configuring the belt conveyance device 11 has been described, but it is needless to say that the belt conveyance device 11 may be configured by three or more belt drive rollers. It is.
[0040]
【The invention's effect】
As described above, an urging member attached to the support member is provided for the tension adjusting means for adjusting the tension of the conveyor belt with respect to the conveyor belt suspended by at least two movable belt drive rollers. By moving the support member to maintain the length of the urging member, the tension of the conveyor belt is maintained, and the tension of the conveyor belt by the tension roller is always optimized, thereby improving the conveyance efficiency. Is.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a belt conveyance device according to the present invention.
FIG. 2 is an explanatory diagram of an operation principle of the belt driving roller in FIG.
FIG. 3 is an explanatory diagram of belt tension adjustment in the belt conveyance device of FIGS. 1 and 2;
FIG. 4 is a schematic explanatory view (1) of an example single-piece sheet conveyance processing system to which a belt conveyance device according to the present invention is applied.
FIG. 5 is a schematic explanatory diagram (2) of an example single-piece sheet conveyance processing system to which the belt conveyance device according to the present invention is applied.
FIG. 6 is an explanatory diagram of another configuration in the single-piece sheet conveyance processing system.
FIG. 7 is an explanatory diagram of another configuration of the belt conveyance device according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Belt conveying apparatus 12, 13 Belt drive roller 14 Tension roller 15 Bearing 16 Conveying belt 17 Support member 18 Biasing member 19 Position sensor 20, 31, 32 Movable motor 61 Single piece sheet conveying processing system

Claims (4)

所定の搬送体を搬送ベルトにより所定の搬送先に搬送するベルト搬送装置であって、
前記搬送ベルトを懸架する少なくとも2つのベルト駆動ローラと、
前記ベルト駆動ローラを、垂直方向水平方向の何れかに移動させるローラ可動手段と、
少なくとも前記ベルト駆動ローラを回転させて前記搬送ベルトを駆動させるベルト駆動手段と、
前記ベルト駆動ローラに前記搬送ベルトが懸架されたときに当該搬送ベルトの張りを調整する張り調整手段と、
所定の支持部材より前記張り調整手段に付勢部材を設け、当該付勢部材の長さを維持させるべく当該支持部材を可動させて当該張り調整手段を当該搬送ベルトに対して適性張りとさせる張り制御手段と、
を有することを特徴とするベルト搬送装置。
A belt transport device that transports a predetermined transport body to a predetermined transport destination by a transport belt,
At least two belt drive rollers for suspending the conveyor belt;
Roller moving means for moving the belt driving roller in either the vertical direction or the horizontal direction;
Belt driving means for driving at least the belt driving roller to drive the conveying belt;
Tension adjusting means for adjusting the tension of the conveyor belt when the conveyor belt is suspended from the belt driving roller;
A tension member is provided on the tension adjusting means from a predetermined support member, and the tension member is moved to maintain the length of the biasing member so that the tension adjusting means is properly tensioned to the conveyor belt. Control means;
A belt conveyance device comprising:
所定の搬送体を供給する搬送体供給手段と、
供給される前記搬送体を受け取る搬送体受取手段と、
前記搬送体供給手段と前記搬送体受取手段との間に、前記請求項1記載のベルト搬送装置が所定数配置され、当該搬送体供給手段から供給される前記搬送体を当該搬送体受取手段に搬送する搬送手段と、
を有することを特徴とするベルト搬送システム。
A carrier supply means for supplying a predetermined carrier;
A carrier receiving means for receiving the supplied carrier;
A predetermined number of belt conveyance devices according to claim 1 are arranged between the conveyance body supply means and the conveyance body reception means, and the conveyance body supplied from the conveyance body supply means is used as the conveyance body reception means. Conveying means for conveying;
A belt conveyance system comprising:
請求項2記載のベルト搬送システムであって、前記搬送手段は、前記ベルト搬送装置が前記搬送体を載置させて搬送させるべく所定数配置されることを特徴とするベルト搬送システム。3. The belt conveyance system according to claim 2, wherein a predetermined number of the conveyance means are arranged so that the belt conveyance device places and conveys the conveyance body. 請求項2記載のベルト搬送システムであって、前記搬送手段は、前記ベルト搬送装置を上下二段に配置させて前記搬送体を挾持して搬送させるべく、当該二段のベルト搬送装置が所定数配置されることを特徴とするベルト搬送システム。3. The belt conveying system according to claim 2, wherein the conveying means includes a predetermined number of the two-stage belt conveying devices so that the belt conveying devices are arranged in two upper and lower stages and the conveying body is held and conveyed. A belt conveyance system characterized by being arranged.
JP2002222663A 2002-07-31 2002-07-31 Belt conveying device and belt conveying system Expired - Fee Related JP3878084B2 (en)

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