JP3724671B2

JP3724671B2 - Perforation processing apparatus in image forming apparatus

Info

Publication number: JP3724671B2
Application number: JP29694796A
Authority: JP
Inventors: 泰宏上條; 貴仕中里
Original assignee: Fuji Xerox Co Ltd; Fujifilm Business Innovation Corp
Current assignee: Fujifilm Business Innovation Corp
Priority date: 1996-11-08
Filing date: 1996-11-08
Publication date: 2005-12-07
Anticipated expiration: 2016-11-08
Also published as: JPH10139264A

Description

【０００１】
【発明の属する技術分野】
本発明は、たとえば複写機の後処理装置に組み込まれ画像形成後のシートにファイリング用の孔を開けるための穿孔処理装置に係り、特に穿孔によって多量に発生する穿孔クズの収容空間の嵩を小さくした穿孔処理装置に関する。
【０００２】
【従来の技術】
複写機に備えつける各種の後処理装置の中には、複写後のシートにファイリング用の孔を自動的に開けていく穿孔装置が組み込まれる。このような穿孔装置は、てシートが通過する経路に交叉する向きにパンチを穿孔方向に往復駆動可能に設けると共に、穿孔後に発生する穿孔クズを受けて収容するためのトレーを備えるというものが一般的な構成であり、その概要を図９に示す。
【０００３】
同図の（ａ）はシートの搬送方向と直交する方向に見た要部の縦断面図、同図の（ｂ）は同図（ａ）のＸ−Ｘ線矢視による縦断面図である。
【０００４】
図において穿孔処理装置にはシートＳのガイド５１ａ，５１ｂに対して直交方向に貫通する向きに進退動作する穿孔ピン５２を偏心機構を介して回転駆動源に連接し、ガイド５１ｂの下方には穿孔クズＷを収納するためのトレー５３を配置している。穿孔ピン５２はシートＳの２個所にファイリング用孔を同時に開けるために一対配置され、これらを同期させて図において昇降動作させることによって、シートＳを打ち抜く。そして、トレー５３はシートＳの搬送方向に長い形状を持ち、他の機器との干渉を避けるために出来るだけ嵩を小さくした設計となっている。
【０００５】
【発明が解決しようとする課題】
このような穿孔装置では、穿孔ピン５２による穿孔位置が固定されているので、穿孔ピン５２によって打ち抜かれた穿孔クズＷはトレー５３にただ自然に落ちていくだけなので、トレー５３内では同図の（ｂ）に示すように二つの山ができていく。このため、トレー５３の高さを大きくしていても、この山状に盛り上がった部分がトレー５３の高さを上回るようになると、穿孔ピン５２がこの山状の部分に当たって穿孔力に対する抵抗として作用する。したがって、図中の一点鎖線で示すようにトレー５３を深くすれば穿孔クズＷの収納量が増えるので、このような穿孔に対する抵抗を防止できる。
【０００６】
しかしながら、トレー５３の嵩を大きくすると他の機器との干渉によってレイアウトに支障をきたすほか、深くした場合でも穿孔ピン５２の直下が山状となって残りの谷部分は収納に余裕があるにも関わらず無駄になってしまう。また、穿孔クズＷが山状に積もるので、穿孔クズＷがトレー５３内で満杯状態になるまで放置しておくと、トレー５３を装置から引き出すときには山状に盛り上がった部分が、トレー５３の引き出し方向の反対側に崩れていって端部から溢れ出るという問題もある。
【０００７】
これに対し、たとえば実開昭６２−９２２６１号公報に記載の穿孔装置では、トレーを振動させることにより穿孔クズが山状になった部分を均すようにしたり、また実公平３−２１９１７号公報に記載のように穿孔クズを誘導する振動型のガイドを設けることによって同様に山状の堆積を均すようにしたももがある。
【０００８】
しかしながら、このような振動を利用したものでは、トレーの支持構造が複雑になってその全体の嵩が増えてしまい、結果的に他の機器との干渉を招いてしまうという問題が残る。また、トレーの振動による騒音の発生も無視できず、特に閉じたハウジング内にトレーが収納されるような構造であると、音が籠もってしまって不快感を与えかねない。
【０００９】
本発明において解決すべき課題は、トレー内に万遍なく穿孔クズを均すように分布させることによってトレーを小さくすると共にこの穿孔クズの均しのための機構による振動や騒音の発生がない穿孔処理装置を提供することにある。
【００１０】
【課題を解決するための手段】
本発明は、画像形成装置本体に付設され画像形成後に排出されるシートにファイリング用の孔を穿つための穿孔処理装置であって、シートの搬送路を貫通する向きに往復動する穿孔ピンと、この穿孔ピンによって打ち抜かれたシートの穿孔クズを受けるトレーとを備え、穿孔ピンとトレーとの間に穿孔クズをトレーに対して分散投入するための分散部材を備えてなり、（１）分散部材は、穿孔ピン側からの穿孔クズの落下流れに向けて稜線を突き出した山形状の案内面を備え、山形状の分散部材の案内面は、稜線を境として一方を急斜面とすると共に他方を緩斜面とし、分散部材の緩斜面に穿孔クズが通り抜け可能な大きさの開口を備えてなること、（２）分散部材は穿孔ピンからの穿孔クズ流れを受けてトレー側に強制分散させるように動作可能とし、その動作を制御する制御手段を備え、制御手段は、分散部材の動作の態様を予め設定された穿孔ピンによる穿孔回数毎に切替え操作可能としてなること、（３）分散部材は、穿孔ピンの配列方向に一致する軸線を持って配置され周面にスパイラル条を突き出して設けたロッドであって、このロッドの正逆回転によって穿孔ピンからの穿孔クズ流れをスパイラル条の干渉によりロッドの軸線方向へ互いに反対向きに放出可能としてなること、（４）トレーを穿孔ピンの配列方向に沿って外部に引き出し可能とすると共に、引き出し方向と逆側の端部に穿孔クズの溢れ出を回収する補助ブースを備えてなることを特徴とする。
【００１１】
【発明の実施の形態】
本発明においては、穿孔ピンが搬送路から出没する部分を含む空間を創成してトレーへの穿孔クズの案内路を形成するガイドフードを備え、このガイドフードに分散部材を備える構成とすることできる。
【００１３】
また、分散部材の稜線を穿孔ピンのほぼ中心を通る鉛直面内に含ませた配置とすることができ、穿孔ピンを互いに間隔をおいて複数配置したものでは、分散部材を穿孔ピンの数と同じとすることができる。
【００１４】
更に、分散部材の動作を制御する制御手段は、予め設定する穿孔ピンによる穿孔回数の設定及びその変更を可能な系として含むものとしてもよい。
【００１５】
また、可動式の分散部材は、穿孔ピンからの穿孔クズ流れを受けると共にその軸周りの正逆回転によってトレーへの投入方向を互いに反対向きとして放出する羽根車状とすることができる。また、分散部材をロッドとした場合、ロッドのスパイラル条の周面をトレーの上端とほぼ同一または少し下に位置させてもよい。
【００１６】
更に、分散部材の正逆回転の駆動を、シートを搬送する搬送ロールの駆動源に連接したものとすることもできる。
【００１８】
【実施例】
図１は本発明の穿孔処理装置の一実施例であって、同図の（ａ）はシートの搬送方向と直交する方向に見た要部の縦断面図、同図の（ｂ）は同図（ａ）のＡ−Ａ線矢視による縦断面図である。
【００１９】
図において、従来例で示したように、シートＳを挟んでそのパスを案内する一対のパスガイド１ａ，１ｂが複写機等の画像形成装置の用紙排出部に接続した後処理装置の内部に設けられ、ガイド１ａの上方に穿孔処理装置のパンチング駆動機構２が配置されている。このパンチング駆動機構２は、シートＳの搬送方向に間隔をおいて一対の穿孔ピン２ａ，２ｂを備え、これらの穿孔ピン２ａ，２ｂを同期して図において上下に往復動作可能としたものであり、穿孔ピン２ａ，２ｂは下側のパスガイド１ｂを突き抜けるストロークを持つ。
【００２０】
パスガイド１ｂの下面には穿孔ピン２ａ，２ｂによって打ち抜かれた穿孔クズＷを収集するためのガイドフード３を設けると共に、このガイドフード３の下側には穿孔クズＷを回収するためのトレー４を組み込む。
【００２１】
ガイドフード３は穿孔ピン２ａ，２ｂを含む長方形の範囲を区画して下端を開放した枠体状に形成され、これらのピン２ａ，２ｂのそれぞれに対応する部分には穿孔クズＷの分散ガイド３ａを設けている。これらの分散ガイド３ａは同図の（ａ）に示すようにガイドフード３の内部を横切って配置されたもので、その頂の稜線３ｂを穿孔ピン２ａ，２ｂの軸芯を通る鉛直面内に含ませた山形状の縦断面を持ち全体を一様な肉厚としたものであう。
【００２２】
同図（ｂ）において左側に一している分散ガイド３ａは、ガイドフード３の中央側に臨む面を傾斜角度が大きな急斜面３ｃとすると共に、反対側の面を傾斜が緩やかな緩斜面３ｄとしたもので、緩斜面３ｄにはその傾斜方向のほぼ中央に穿孔クズＷが通り抜けできる程度の大きさの開口３ｅを開けている。また、右配置の分散ガイド３ａも同様の構造を持つものであり、左配置のものと左右対称として形成されている。
【００２３】
トレー４は後処理装置のハウジング（図示せず）に対して同図（ｂ）の矢印方向に引き出せるように組み込まれたものであり、前板４ａ，左右の側板４ｂ，４ｃの中にガイドフード３の下端を差し込める大きさを持つ。そして、前板４ａと反対側に設ける背板４ｄはガイドフード３の下端よりも僅かに低い高さとし、この背板４ｄの手前には同じ高さの仕切板４ｅを形成し、これらの背板４ｄと仕切板４ｅとの間を補助ブース４ｆとしている。
【００２４】
以上の構成において、供給されたシートＳに対して穿孔ピン２ａ，２ｂがファイリング用孔を打ち抜くと穿孔クズＷはガイドフード３からトレー４に落とし込まれる。このとき、穿孔ピン２ａ，２ｂの真下には分散ガイド３ａの頂点である稜線３ｂが走っているので、穿孔クズＷはこの稜線３ｂを境にして同図の（ｂ）において左右に分散させられる。
【００２５】
すなわち、同図（ｂ）のいて左配置の分散ガイド３ａの上に落下してくる穿孔クズＷは稜線３ｂに当たったときの姿勢や落下の向きによって左右に振り分けられることになり、急斜面３ｃ側に沿う穿孔クズは稜線３ｂに近い部分からトレー４側に落とし込まれる。一方、緩斜面３ｄに沿う穿孔クズは稜線３ｂから離れた部分でトレー４側に落とし込まれると同時に、この緩斜面３ｄを滑り落ちる穿孔クズＷの一部は開口３ｅから直接トレー４内に落下する。
【００２６】
このように分散ガイド３ａを設けることによって、穿孔ピン２ａによって打ち抜かれた穿孔クズＷは３方向に分散させられ、穿孔ピン２ｂ側においても同様の穿孔クズＷの分散が見られる。したがって、穿孔クズＷがトレー４内に次第に積もっていくときには、同図（ｂ）に示すように主として４個の山形状の堆積として分散させられ、従来例で示したように穿孔ピン２ａ，２ｂ部分に対応する２個所が大きく盛り上がるような堆積に比べると、穿孔クズＷの堆積山を低くすることができる。そして、これらの堆積山どうしの間の谷には緩斜面３ｄの開口３ｅからも穿孔クズＷが落とし込まれるので、山と谷との間の落差も小さくなり、トレー４の中で穿孔クズＷが満たされない部分ができないように収容していくことができる。
【００２７】
このように、分散ガイド３ａはトレー４内での穿孔クズＷの高さ方向の分布を一様にしていくことができるので、トレー４内の空間の殆どを穿孔クズＷの収納に当てることができ、トレー４の高さや幅を大きくする必要がなくなる。
【００２８】
また、トレー４内が穿孔クズＷで満杯になればこれを同図（ｂ）の矢印方向に引き出して排出する。このとき、穿孔クズＷの堆積山がガイドフード３の下端よりも高いと、トレー４を引き出すに従ってガイドフード３の左端部分がこの堆積山の頂上部分をかすり取っていき、同図の一点鎖線で示すように大きな山となって仕切板４ｅ側に溜まる。
【００２９】
これに対し、トレー４を引き出すときには、この溜まった分の穿孔クズＷは最後に引き抜かれる部分となる補助ブース４ｆの中に掻き落とされる。したがって、トレー４内が過度に満杯になっていたとしても、トレー４を引き出すときには余分の穿孔クズＷは補助ブース４ｆの中に回収され、外部に漏れ出ることが防止される。
【００３０】
図２はシートＳのパスが上から下に向かう場合の例であって、先の例とはガイドフード３の形状が相違するだけであり、同じ部材については共通の符号で指示する。
【００３１】
ガイドフード３はその左側面を開放してガイド１ｂに連結されたものであり、穿孔ピン２ａ，２ｂによって打ち抜かれた穿孔クズＷを時計周りに案内するような内部空間を形成している。そして、先の例と同様にトレー４の中に少し没するように下端を位置させると共に、一対の分散ガイド３ａを配置することによって、先の例と同様にトレー４の中に溜まる穿孔クズＷの堆積山と谷との落差を小さくして充填率を高くした穿孔クズＷの回収を可能としている。
【００３２】
図３は別の例であって、分散ガイドを可動式として打ち抜かれた直後の穿孔クズを強制的に分散させる構成としたものであり、同図の（ａ）は要部の平面図、同図の（ｂ）は同図（ａ）のＣ−Ｃ線矢視による縦断面図である。なお、トレー４は先の例のものと同一である。
【００３３】
ガイドフード５はパスガイド１ｂに側面を連結してその下端側のみを開放した形状を持ち、その内部には一対の分散ガイド５ａ，５ｂを同図（ｂ）の矢印方向に揺動可能に配置している。これらの分散ガイド５ａ，５ｂは長方形状の平板であって、長辺部には長手方向の一端側に偏った支軸５ｃを設けてこれをガイドフード５の側壁から外に突き出し、ガイドフード５の外部にはこれらの支軸５ｃを回転駆動するための駆動ユニット６を設ける。支軸５ｃの位置は左配置の分散ガイド５ａのものでは穿孔ピン２ａに対して左側であり、右配置の分散ガイド５ｂのものでは穿孔ピン２ｂに対して右側である。
【００３４】
駆動ユニット６はモータ６ａに直結した平歯車の駆動歯車６ｂとこれに噛み合って支軸５ｃにそれぞれを連結した被動歯車６ｃ，６ｄを備えたものである。そして、コントローラによってモータ６ａの出力軸を一定の回転角度で正逆回転させることにより、分散ガイド５ａ，５ｂをそれぞれ同期させて矢印の範囲で揺動させることができる。
【００３５】
このような揺動式の分散ガイド５ａ，５ｂを持つものでは、それぞの支軸５ｃの位置が穿孔ピン２ａ，２ｂに対してずれているので、同図（ｂ）の実線の分散ガイド５ａ，５ｂの姿勢では打ち抜かれた穿孔クズＷを受け止め、その後の回動によってそれぞれ穿孔クズＷを左側及び右側に振り払うようにして分散させる。そして、一点鎖線の姿勢まで回動したときには、穿孔ピン２ａ，２ｂの下であって穿孔クズＷが落ちていく部分には分散ガイド５ａ，５ｂがないので、穿孔クズＷはそのままトレー４内に堆積する。
【００３６】
したがって、一対の分散ガイド５ａ，５ｂを同期させて揺動回転させることにより、図示のように４連の穿孔クズＷの堆積山とすることができ、先の例と同様に堆積山と谷との落差が小さい充填率の高い穿孔クズＷの回収が可能である。
【００３７】
図４は更に別の例であって、分散ガイドの回転駆動機構をシートＳの搬送機構に連接したものであり、トレー４は先の例のものと同じである。
【００３８】
図３の例と同様に下端面側のみを開放したガイドフード７の中には、その支軸７ｂを穿孔ピン２ａ，２ｂの穿孔軸線と同軸上に配置して一対の十字状の分散ガイド７ａを設けている。そして、ガイドフード７の外には平歯の駆動歯車８ａとこれに噛み合う被動歯車８ｂ，８ｃを設け、これらの被動歯車８ｂ，８ｃに支軸７ｂを連結している。
【００３９】
駆動歯車８ａには傘歯車８ａ−１を同軸上に連結し、この傘歯車８ａ−１に噛み合う駆動傘歯車９ａを設けた駆動軸９を配置する。この駆動軸９はシートＳを搬送するローラ（図示せず）を回転させる駆動機構を共通の駆動源とするものであり、この駆動機構の概要を図５に示す。
【００４０】
駆動機構１０は、分散ガイド７ａを揺動回転させるための駆動軸９と、シートＳを画像形成装置から排出して穿孔処理装置に送り込むためにシートＳのパス部分に配置したシート搬送ローラ（図示せず）を回転駆動する搬送駆動軸１０ａとに回転を伝達するもので、その駆動源としてモータ１０ｂを備えている。
【００４１】
モータ１０ｂの出力軸には駆動歯車１０ｃを取り付けてこれを搬送駆動軸１０ａの被動歯車１０ｄに噛み合わせる。また、搬送駆動軸１０ａと駆動軸１０の間には中間軸１０ｅを配置するとともにこれに電磁クラッチ１０ｆを介して歯車１０ｇを取り付け、この歯車１０ｇを駆動歯車１０ｃに噛み合わせる。更に、中間軸１０ｅには歯車１０ｈを一体的に取り付け、この歯車１０ｈと噛み合う中間歯車１０ｉを介して被動歯車１０ｊを駆動軸９に一体的に固定すると共に駆動軸９には歯車１０ｇと噛み合う歯車１０ｋを電磁クラッチ１０ｍを介して設ける。
【００４２】
このような駆動機構１０においては、電磁クラッチ１０ｆをオフ及びもう一つの電磁クラッチ１０ｍをオンとしたときには、歯車１０ｇは中間軸１０ｅに対して自由回転状態となるので、図５の（ｂ）に示すように、歯車１０ｇは図５の（ａ）の矢視Ａ方向から見て反時計周りに回転し、これに噛み合っている駆動軸９の歯車１０ｋは時計方向に回転する。このとき、電磁クラッチ１０ｍはオンとなっているので、歯車１０ｋの回転はこの電磁クラッチ１０ａを介して駆動軸９に伝達されて時計方向に回転する。
【００４３】
一方、電磁クラッチ１０ｆをオン及び他方の電磁クラッチ１０ｍをオフとしたときには、歯車１０ｇの回転が電磁クラッチ１０ｆを介して中間軸１０ｅに伝達され、図５の（ｃ）に示すように、歯車１０ｈは反時計方向に回転する。このため、中間歯車１０ｉは時計方向に回転しこれと噛み合っている被動歯車１０ｊは反時計方向して駆動軸９を回転駆動する。このとき、電磁クラッチ１０ｍはオフとなっているので、駆動軸９と歯車１０ｋとは互いに逆向きに回転する。
【００４４】
このように電磁クラッチ１０ｆ，１０ｍを交互にオン・オフすることによって、駆動軸の回転方向を反転させることができ、シートＳを搬送するローラを回転駆動する搬送駆動軸１０ａのモータ１０ｂを共通の駆動源として駆動軸９の往復回動に利用することができる。
【００４５】
図４に戻って、駆動機構１０によって駆動軸９をたとえば９０°程度の回転角度で正逆回転駆動させると、十字状の羽根を持つ分散ガイド７ａは図４の（ｂ）の矢印方向に揺動する。これによって、穿孔ピン２ａ，２ｂによって打ち抜かれた後に分散ガイド７ａの羽根どうしの間に詰まる穿孔クズＷが左右に振り分けられて放出される。したがって、先の例と同様に堆積山が４個所に造られて谷との落差が小さい穿孔クズＷの堆積とすることができ、トレー４の高さを補充しなくても十分な容量の穿孔クズＷを収納することが可能となる。
【００４６】
ここで、図４に示した例では、駆動軸９の正逆回転によって羽根車状の分散ガイド７ａを同図の（ｂ）に示すように揺動させることによって、穿孔クズＷが左右に振り分けられる。このような動作においては、穿孔クズを羽根の間に落とし込んで或る程度溜まったら一気に振り分けるようにするほうが駆動軸９を常に回転させないで済む。そこで、パンチング駆動機構２による穿孔回数をコントローラに入力するようにし、この穿孔回数をたとえば１０回程度を基準として駆動軸９を正逆回転させるようにすれば、穿孔クズを左右に振り分けることが可能となる。
【００４７】
図６はこのような穿孔回数を基準として駆動機構１０の駆動を制御するためのフローである。先にも述べたように、パンチング駆動機構２の穿孔回数をカウントして設定した回数毎に駆動機構１０による駆動軸９の正逆回転によって、溜まった穿孔クズＷを左右に定期的に振り分けることができる。すなわち、たとえば１０回の穿孔が終わると分散ガイド７ａを時計方向に回動してその向きに穿孔クズを放出し、次の１０回の穿孔が終わったときには反時計方向に回動させて穿孔クズを逆方向に放出する操作が可能である。
【００４８】
そして、分散ガイド７ａの回動方向を切り替える基準となる穿孔回数も変更できるように分散部材駆動制御穿孔数の情報を入力できる系とすることもできる。この場合では、たとえば、１０回の穿孔毎に分散ガイド７ａの回動方向を切り替えるのに代えて、２０回の穿孔毎に切り替えるような操作をすることもできる。したがって、トレー４の容量を比較的大きくとれるような条件の場合では、穿孔回数を多くしてもその収容には支障がないので、駆動軸９の回転駆動の頻度も低下し、部材の耐用性の向上が図られることになる。
【００４９】
図７は更に別の例であり、図２に示したものと同様の形状のガイドフード１１の下端側をトレー４の中に少し埋没させるように組み込み、トレー４の幅方向の中心に一致する軸線を持つ分散部材１１ａを回転自在に備えている。この分散部材１１ａはガイドフード１１の外まで突き出てモータ等の回転駆動機構（図示せず）に連接されるロッド１１ｂとその周面に螺旋状に形成されたスパイラル条１１ｃを形成したものである。
【００５０】
ロッド１１ｂはその軸線周りに正逆回転駆動されるものであり、スパイラル条１１ｃのリードはロッド１１ｂの回転角度範囲で穿孔ピン２ａ，２ｂのそれぞれの真下を中立点として同図の（ｂ）において左右方向にトラバースできる程度のものとする。そして、スパイラル条１１ｃのロッド１１ｂの突き出し長さは穿孔ピン２ａ，２ｂで打ち抜かれた穿孔クズＷを引っ掛けるのに十分でしかもトレー４中に堆積した表面を掻き取れる程度ものとする。
【００５１】
この例では、分散部材１１ａのロッド１１ｂを正逆回転させると、スパイラル条１１ｃが左右にトラバースするので、穿孔ピン２ａ，２ｂ部分から落下してくる穿孔クズＷをこのスパイラル条１１ｃに引っ掛けながら左右に振り払うことができる。したがって、図４の例の場合と同様に、トレー４中に４つの穿孔クズＷの山ができるように充填していくことができ、堆積山どうしの間の谷との落差が小さくて充填率の高い穿孔クズＷの回収が可能である。
【００５２】
穿孔クズＷがトレー４の中に溜まっていくと、図７の（ａ）に示すようにトレー４の幅方向の中央部分が最も高くなる。これは、山部分及び谷部分についても同様であり、したがって山部分の幅方向の中央が頂上となるように穿孔クズＷが堆積していく。
【００５３】
このような穿孔クズＷの堆積に対し、図８に示すように分散部材１１ａがトレー４の長手方向の全長に及んでいるので、穿孔クズＷの堆積に伴ってロッド１１ｂ及びスパイラル条１１ｃが穿孔クズＷの堆積物に触れるようになる。そして、ロッド１１ｂは正逆回転しているからその周面のスパイラル条１１ｃが堆積物の上面の掻くようになり、トレー４の幅方向にも長手方向にも穿孔クズＷの頂上部分を均していく。このため、図７の（ｂ）に示すように山と谷とに区分されているような充填に代えて、トレー４のほぼ全体を同じ高さの穿孔クズＷの堆積層とすることができ、充填率を更に高めることができる。
【００５４】
また、穿孔クズＷが満杯になっても、トレー４の上端から突き出るような堆積物の山が分散部材１１ａ自身によって抑えられるので、トレー４を引き出すときの溢れ出しも防止される。
【００５５】
【発明の効果】
本発明では、穿孔クズ流れをトレー側に向けて均等となるように分散させる分散部材を持たせているので、トレーが空の状態から満杯になるまで穿孔クズをトレーの中に一様に分散させてことができ、充填効率を高くしてトレーも小型化できる。このため、トレーが後処理装置内で占める嵩も小さくなり他の機器との干渉を抑えてレイアウトの自由度を向上させることが可能となる。
【００５６】
また、トレーを引き出し式としてこれに補助ブースを設けたものでは、穿孔クズで満杯になったときにトレーを引き出しても穿孔クズの溢れは補助ブース内に回収されるので、後処理装置の内部に穿孔クズが入り込んだりすることがなく、掃除や保守点検も簡単になる。
【図面の簡単な説明】
【図１】本発明の穿孔処理装置の一実施例であって、同図の（ａ）はシートの搬送方向と直交する方向に見た要部の縦断面図、同図の（ｂ）は同図（ａ）のＡ−Ａ線矢視による縦断面図である。
トナー供給装置の要部を示す平面図である。
【図２】シートを上から下に搬送するパスの場合の例であって、同図の（ａ）は要部の縦断面図、同図の（ｂ）は同図（ａ）のＢ−Ｂ線矢視による縦断面図である。
【図３】揺動式の分散部材を備える例であって、同図の（ａ）はその要部を示す横断面図、同図の（ｂ）は同図（ａ）のＣ−Ｃ線矢視による縦断面図である。
【図４】揺動式の十字状の羽根を分散部材として備える例であって、同図の（ａ）はその要部を示す横断面図、同図の（ｂ）は同図（ａ）のＤ−Ｄ線矢視による縦断面図である。
【図５】図４の例における駆動軸を回転駆動するための駆動系の概略図である。
【図６】図４の例における制御のフローである。
【図７】スパイラル条を持つロッドを分散部材とした例であって、同図の（ａ）は要部の縦断面図、同図の（ｂ）は同図（ａ）のＥ−Ｅ線矢視による縦断面図である。
【図８】図７の例において穿孔クズの上面を均す状態を示す図であって、同図の（ａ）は要部の縦断面図、同図の（ｂ）は同図（ａ）のＦ−Ｆ線矢視による縦断面図である。
【図９】従来例であって、同図の（ａ）は要部の縦断面図、同図の（ｂ）は同図（ａ）のＸ−Ｘ線矢視による縦断面図である。
【符号の説明】
１ａ，１ｂ：パスガイド
２：パンチング駆動機構
２ａ，２ｂ：穿孔ピン
３：ガイドフード
３ａ：分散ガイド
３ｂ：稜線
３ｃ：急斜面
３ｄ：緩斜面
３ｅ：開口
４：トレー
４ｆ：補助ブース
５：ガイドフード
５ａ，５ｂ：分散ガイド
６：駆動ユニット
７：ガイドフード
７ａ：分散ガイド
８ａ：駆動歯車
８ｂ，８ｃ：被動歯車
９：駆動軸
１０：駆動機構
１１：ガイドフード
１１ａ：分散部材
１１ｂ：ロッド
１１ｃ：スパイラル条
Ｓ：シート[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a perforation processing apparatus that is incorporated in, for example, a post-processing apparatus of a copying machine and forms a filing hole in a sheet after image formation. In particular, the volume of a housing space for perforated waste generated in large quantities due to perforation is reduced. Relates to the perforation processing apparatus.
[0002]
[Prior art]
In various post-processing devices provided in the copying machine, a punching device for automatically opening a filing hole in the copied sheet is incorporated. Such a punching device is generally provided with a tray that can be driven to reciprocate in the punching direction in a direction crossing the path through which the sheet passes, and has a tray for receiving and storing punch scraps generated after punching. The outline is shown in FIG.
[0003]
(A) of the figure is the longitudinal cross-sectional view of the principal part seen in the direction orthogonal to the conveyance direction of a sheet | seat, (b) of the figure is a longitudinal cross-sectional view by the XX arrow of the figure (a). .
[0004]
In the figure, the punching processing apparatus is connected to a rotary drive source via a decentering mechanism with a punching pin 52 that moves forward and backward in a direction perpendicular to the guides 51a and 51b of the sheet S. A tray 53 for storing the waste W is disposed. A pair of perforation pins 52 are arranged to simultaneously open filing holes at two locations on the sheet S, and the sheet S is punched out by synchronizing them and moving them up and down in the drawing. The tray 53 has a shape that is long in the conveyance direction of the sheet S, and is designed to be as small as possible in order to avoid interference with other devices.
[0005]
[Problems to be solved by the invention]
In such a perforating apparatus, since the perforating position by the perforating pin 52 is fixed, the perforated scrap W punched out by the perforating pin 52 simply falls naturally onto the tray 53. As shown in b), two mountains are formed. For this reason, even if the height of the tray 53 is increased, when the bulged portion exceeds the height of the tray 53, the piercing pin 52 hits the ridge and acts as a resistance to the piercing force. To do. Therefore, if the tray 53 is deepened as shown by the alternate long and short dash line in the figure, the accommodation amount of the perforated scrap W increases, so that resistance to such perforation can be prevented.
[0006]
However, if the bulk of the tray 53 is increased, it interferes with the layout due to interference with other devices, and even when the tray 53 is deepened, the portion directly below the perforation pin 52 is mountain-shaped so that the remaining trough portion has room for storage. Regardless, it is wasted. Further, since the perforated lint W is piled up in a mountain shape, if the perforated litter W is left until it is full in the tray 53, when the tray 53 is pulled out from the apparatus, the portion raised in the mountain shape is pulled out of the tray 53. There is also a problem that it collapses to the opposite side of the direction and overflows from the end.
[0007]
On the other hand, for example, in the perforating apparatus described in Japanese Utility Model Publication No. 62-92261, the tray is vibrated so as to level the portion where the perforated scraps are crested, or in Japanese Utility Model Publication No. 3-21917. In some cases, a mountain-shaped pile is similarly leveled by providing a vibration-type guide for inducing perforated debris as described in.
[0008]
However, in the case of using such vibrations, the support structure of the tray becomes complicated and the overall volume thereof increases, resulting in a problem of causing interference with other devices. In addition, the generation of noise due to the vibration of the tray is not negligible. In particular, if the structure is such that the tray is housed in a closed housing, the sound may be stagnant and uncomfortable.
[0009]
The problem to be solved in the present invention is to make the tray smaller by uniformly distributing the perforated scraps in the tray and to prevent the generation of vibration and noise by the mechanism for smoothing the perforated scraps. It is to provide a processing apparatus.
[0010]
[Means for Solving the Problems]
The present invention relates to a punching processing apparatus for punching a filing hole in a sheet attached to an image forming apparatus main body and discharged after image formation, and a punching pin that reciprocates in a direction penetrating a sheet conveyance path, A tray for receiving perforation scraps of the sheet punched by the perforation pins, and a dispersion member for dispersing and introducing perforation scraps to the tray between the perforation pins and the tray, (1) The dispersion member includes a mountain-shaped guide surface that protrudes a ridge line toward the falling flow of the drilling scraps from the drill pin side, and the guide surface of the mountain-shaped dispersion member has one of the steep slopes with the ridge line as a boundary. The other side is a gentle slope, and the dispersion member is provided with an opening large enough to allow perforation scraps to pass through. (2) The dispersion member is forced to the tray side by receiving the perforation waste flow from the perforation pins. (3) The control means is configured to be operable so as to be dispersed, and is provided with a control means for controlling the operation, and the control means is capable of switching the operation mode of the dispersion member for every number of perforations by a preset perforation pin. The dispersing member is a rod that is arranged with an axis line that coincides with the direction in which the drill pins are arranged, and is provided with a spiral strip projecting on the peripheral surface. (4) The tray can be pulled out to the outside along the arrangement direction of the drill pins, and at the end opposite to the pull-out direction. Provide an auxiliary booth to collect spilled spills It is characterized by.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
In this invention, it can be set as the structure which provides the guide hood which creates the space containing the part where a piercing pin protrudes from the conveyance path, and forms the guide path of the piercing waste to a tray, and is equipped with a dispersion member in this guide hood. .
[0013]
Also, the ridge line of the dispersing member can be arranged in a vertical plane passing through the substantially center of the perforation pin, and in the case where a plurality of perforation pins are spaced apart from each other, the dispersive member is defined as the number of perforation pins. The same can be done.
[0014]
Furthermore, Control the movement of the dispersion member Control means , It is also possible to include as a system capable of setting and changing the number of times of drilling by the drilling pins to be set.
[0015]
In addition, the movable dispersion member is shaped like an impeller that receives the perforated scrap flow from the perforation pin and discharges the trays in opposite directions with each other by forward and reverse rotation around the axis. It can be. Also, the dispersion member is a rod In this case, the peripheral surface of the spiral strip of the rod may be positioned substantially the same as or slightly below the upper end of the tray.
[0016]
Further, the forward / reverse rotation of the dispersion member can be connected to the drive source of the transport roll that transports the sheet.
[0018]
【Example】
FIG. 1 shows an embodiment of the punching apparatus according to the present invention. FIG. 1A is a longitudinal sectional view of a main part viewed in a direction orthogonal to the sheet conveying direction, and FIG. It is a longitudinal cross-sectional view by the AA line arrow of figure (a).
[0019]
In the figure, as shown in the conventional example, a pair of path guides 1a and 1b for guiding the path with the sheet S interposed therebetween are provided inside the post-processing apparatus connected to a sheet discharge portion of an image forming apparatus such as a copying machine. The punching drive mechanism 2 of the punching processing device is arranged above the guide 1a. This punching drive mechanism 2 is provided with a pair of perforation pins 2a and 2b spaced in the conveyance direction of the sheet S, and these perforation pins 2a and 2b can be reciprocated vertically in the figure. The perforating pins 2a and 2b have a stroke that penetrates the lower path guide 1b.
[0020]
A guide hood 3 for collecting perforated scraps W punched by the perforating pins 2a and 2b is provided on the lower surface of the path guide 1b, and a tray 4 for collecting perforated scraps W is provided below the guide hood 3. Incorporate
[0021]
The guide hood 3 is formed in a frame shape that defines a rectangular area including the perforated pins 2a and 2b and has an open lower end, and a portion corresponding to each of these pins 2a and 2b has a dispersion guide 3a for perforated scraps W. Is provided. These dispersion guides 3a are arranged across the inside of the guide hood 3 as shown in (a) of the figure, and the top ridgeline 3b is in a vertical plane passing through the axis of the drilling pins 2a, 2b. It has a mountain-shaped vertical cross section that is included, and has a uniform thickness throughout.
[0022]
In the same figure (b), the dispersion guide 3a on the left side has a steep slope 3c with a large inclination angle on the surface facing the center side of the guide hood 3, and a gentle slope 3d with a gentle slope on the opposite side. Therefore, the gentle slope 3d is provided with an opening 3e having a size enough to allow the perforated scrap W to pass through substantially the center in the inclination direction. Further, the right dispersive guide 3a has the same structure, and is formed symmetrically with respect to the left disposition guide.
[0023]
The tray 4 is incorporated into the housing (not shown) of the post-processing apparatus so that it can be pulled out in the direction of the arrow in FIG. 5B, and the guide hood is placed in the front plate 4a and the left and right side plates 4b, 4c. It has a size that allows the lower end of 3 to be inserted. The back plate 4d provided on the opposite side of the front plate 4a is slightly lower than the lower end of the guide hood 3, and a partition plate 4e having the same height is formed in front of the back plate 4d. An auxiliary booth 4f is provided between 4d and the partition plate 4e.
[0024]
In the above configuration, when the punching pins 2a and 2b punch the filing holes for the supplied sheet S, the punching scraps W are dropped from the guide hood 3 onto the tray 4. At this time, since the ridge line 3b, which is the apex of the dispersion guide 3a, runs directly under the piercing pins 2a and 2b, the piercing scraps W are dispersed left and right in FIG. .
[0025]
That is, the perforated scrap W falling on the dispersion guide 3a arranged on the left side in FIG. 5B is distributed to the right and left depending on the posture when it hits the ridge 3b and the direction of the fall, and the steep slope 3c side The perforated scraps along are dropped into the tray 4 side from the portion close to the ridgeline 3b. On the other hand, the perforated scraps along the gentle slope 3d are dropped to the tray 4 side at a portion away from the ridge line 3b, and at the same time, a part of the perforated scraps W sliding down the gentle slope 3d falls directly into the tray 4 from the opening 3e. .
[0026]
By providing the dispersion guide 3a in this manner, the perforated scrap W punched out by the perforating pins 2a is dispersed in three directions, and the same perforated scrap W is also distributed on the perforated pins 2b side. Therefore, when the perforated scrap W gradually accumulates in the tray 4, it is dispersed mainly as four mountain-shaped deposits as shown in FIG. 5B, and the perforated pins 2a, 2b are shown in the conventional example. Compared with the deposition where the two portions corresponding to the portion are greatly raised, the pile of the perforated waste W can be lowered. Further, since the perforated scrap W is dropped into the valley between the piles from the opening 3e of the gentle slope 3d, the drop between the mountain and the valley is reduced, and the perforated scrap W in the tray 4 is reduced. Can be accommodated so that there is no part that is not satisfied.
[0027]
Thus, since the distribution guide 3a can make the distribution in the height direction of the perforated waste W in the tray 4 uniform, most of the space in the tray 4 can be applied to the storage of the perforated waste W. This eliminates the need to increase the height and width of the tray 4.
[0028]
Further, when the inside of the tray 4 is filled with perforated waste W, it is pulled out in the direction of the arrow in FIG. At this time, if the pile of piles W is higher than the lower end of the guide hood 3, the left end portion of the guide hood 3 scrapes the top of the pile as the tray 4 is pulled out. As shown, it becomes a large mountain and accumulates on the partition plate 4e side.
[0029]
On the other hand, when the tray 4 is pulled out, the accumulated perforated scrap W is scraped off into the auxiliary booth 4f which is a part to be finally pulled out. Therefore, even if the inside of the tray 4 is excessively filled, when the tray 4 is pulled out, the excess perforated scrap W is collected in the auxiliary booth 4f and is prevented from leaking outside.
[0030]
FIG. 2 shows an example in which the path of the sheet S is directed from top to bottom. Only the shape of the guide hood 3 is different from the previous example, and the same members are designated by common reference numerals.
[0031]
The guide hood 3 is connected to the guide 1b with its left side open, and forms an internal space that guides the perforated scrap W punched out by the perforating pins 2a and 2b in the clockwise direction. Then, the lower end is positioned so as to be slightly submerged in the tray 4 as in the previous example, and the pair of dispersion guides 3a is disposed, so that the perforated scrap W collected in the tray 4 as in the previous example. This makes it possible to collect the drilled swarf W having a small filling head and valley and a high filling rate.
[0032]
FIG. 3 shows another example in which the perforated scraps immediately after being punched out as a movable guide are forcibly dispersed. FIG. 3 (a) is a plan view of the main part. (B) of a figure is a longitudinal cross-sectional view by CC arrow of the figure (a). The tray 4 is the same as that in the previous example.
[0033]
The guide hood 5 has a shape in which the side surface is connected to the path guide 1b and only its lower end side is opened, and a pair of dispersion guides 5a and 5b are disposed in the inside thereof so as to be swingable in the direction of the arrow in FIG. are doing. These dispersion guides 5a and 5b are rectangular flat plates, and a long side portion is provided with a support shaft 5c that is biased toward one end in the longitudinal direction and protrudes outward from the side wall of the guide hood 5 so that the guide hood 5 A drive unit 6 for rotationally driving these support shafts 5c is provided outside. The position of the support shaft 5c is on the left side with respect to the piercing pin 2a in the case of the dispersion guide 5a arranged on the left side, and is on the right side with respect to the piercing pin 2b in the case of the dispersion guide 5b arranged on the right side.
[0034]
The drive unit 6 includes a spur gear 6b directly coupled to the motor 6a and driven gears 6c and 6d that mesh with the spur gear 6b and are connected to the support shaft 5c. Then, by rotating the output shaft of the motor 6a forward and backward at a constant rotation angle by the controller, the dispersion guides 5a and 5b can be swung in the range of the arrows in synchronization with each other.
[0035]
In such a swing type dispersion guide 5a, 5b, the position of the respective support shaft 5c is shifted with respect to the drill pins 2a, 2b. so In the position of the solid dispersion guides 5a and 5b in FIG. 5B, the punched scrap W is punched and dispersed by swinging leftward and rightward by the subsequent rotation. And when it rotates to the position of a dashed-dotted line, since there is no dispersion | distribution guide 5a, 5b under the perforation pins 2a and 2b and the perforation waste W falls, the perforation waste W remains in the tray 4 as it is. accumulate.
[0036]
Therefore, by rotating the pair of dispersion guides 5a and 5b in synchronization with each other, it is possible to form a pile of piles of four perforated scraps W as shown in the figure. It is possible to collect perforated waste W having a small filling head and a high filling rate.
[0037]
FIG. 4 shows another example in which the rotation driving mechanism of the dispersion guide is connected to the conveyance mechanism of the sheet S, and the tray 4 is the same as that of the previous example.
[0038]
As in the example of FIG. 3, in the guide hood 7 with only the lower end surface opened, the support shaft 7b is disposed coaxially with the drilling axis of the drilling pins 2a and 2b, and a pair of cross-shaped dispersion guides 7a. Is provided. Then, a spur drive gear 8a and driven gears 8b, 8c meshing therewith are provided outside the guide hood 7, and a support shaft 7b is connected to the driven gears 8b, 8c.
[0039]
A bevel gear 8a-1 is coaxially connected to the drive gear 8a, and a drive shaft 9 provided with a drive bevel gear 9a meshing with the bevel gear 8a-1 is disposed. The drive shaft 9 uses a drive mechanism that rotates a roller (not shown) that conveys the sheet S as a common drive source, and an outline of the drive mechanism is shown in FIG.
[0040]
The driving mechanism 10 includes a driving shaft 9 for swinging and rotating the dispersion guide 7a, and a sheet conveying roller (see FIG. 5) disposed in a path portion of the sheet S for discharging the sheet S from the image forming apparatus and feeding it to the punching processing apparatus. Rotation is transmitted to a conveyance drive shaft 10a that rotationally drives a motor 10b as a drive source.
[0041]
A drive gear 10c is attached to the output shaft of the motor 10b and meshed with the driven gear 10d of the transport drive shaft 10a. An intermediate shaft 10e is disposed between the conveyance drive shaft 10a and the drive shaft 10, and a gear 10g is attached to the intermediate shaft 10e via an electromagnetic clutch 10f. The gear 10g is engaged with the drive gear 10c. Further, a gear 10h is integrally attached to the intermediate shaft 10e, and a driven gear 10j is integrally fixed to the drive shaft 9 via an intermediate gear 10i that meshes with the gear 10h, and a gear that meshes with the gear 10g. 10k is provided via an electromagnetic clutch 10m.
[0042]
In such a drive mechanism 10, when the electromagnetic clutch 10f is turned off and the other electromagnetic clutch 10m is turned on, the gear 10g is in a free rotation state with respect to the intermediate shaft 10e. As shown, the gear 10g rotates counterclockwise as viewed from the direction of arrow A in FIG. 5A, and the gear 10k of the drive shaft 9 meshing with the gear rotates in the clockwise direction. At this time, since the electromagnetic clutch 10m is on, the rotation of the gear 10k is transmitted to the drive shaft 9 via the electromagnetic clutch 10a and rotates clockwise.
[0043]
On the other hand, when the electromagnetic clutch 10f is turned on and the other electromagnetic clutch 10m is turned off, the rotation of the gear 10g is transmitted to the intermediate shaft 10e through the electromagnetic clutch 10f, and as shown in FIG. Rotates counterclockwise. Therefore, the intermediate gear 10i rotates in the clockwise direction, and the driven gear 10j engaged with the intermediate gear 10i rotates in the counterclockwise direction to drive the drive shaft 9 to rotate. At this time, since the electromagnetic clutch 10m is off, the drive shaft 9 and the gear 10k rotate in directions opposite to each other.
[0044]
By alternately turning on and off the electromagnetic clutches 10f and 10m in this way, the rotation direction of the drive shaft can be reversed, and the motor 10b of the transport drive shaft 10a that rotationally drives the roller that transports the sheet S is shared. It can be used for reciprocating rotation of the drive shaft 9 as a drive source.
[0045]
Returning to FIG. 4, when the drive shaft 9 is rotated forward and backward by the drive mechanism 10 at a rotation angle of about 90 °, for example, the dispersion guide 7a having the cross-shaped blades swings in the direction of the arrow in FIG. Move. As a result, perforated scraps W clogged between the blades of the dispersion guide 7a after being punched by the perforating pins 2a and 2b are distributed to the left and right and released. Therefore, as in the previous example, the piles can be formed in four places and the piles of the perforated waste W having a small drop from the valley can be formed, and the perforations having a sufficient capacity can be obtained without replenishing the height of the tray 4. It is possible to store the waste W.
[0046]
Here, in the example shown in FIG. 4, the perforated scrap W is distributed to the left and right by swinging the impeller-shaped dispersion guide 7a as shown in FIG. It is done. In such an operation, it is not always necessary to rotate the drive shaft 9 by dropping the perforated scraps between the blades and collecting them at a stroke when they accumulate to some extent. Therefore, if the number of times of punching by the punching drive mechanism 2 is input to the controller and the drive shaft 9 is rotated forward and backward based on this number of times of punching, for example, about 10 times, the drilling scraps can be distributed to the left and right. It becomes.
[0047]
FIG. 6 is a flow for controlling the driving of the driving mechanism 10 on the basis of the number of perforations. As described above, the accumulated drilling waste W is regularly distributed to the left and right by the forward / reverse rotation of the drive shaft 9 by the drive mechanism 10 every time the punching drive mechanism 2 is counted and set. Can do. That is, for example, when the tenth drilling is completed, the dispersion guide 7a is rotated clockwise to discharge the drilling scrap in that direction, and when the next tenth drilling is completed, the drilling is scraped counterclockwise. Can be released in the reverse direction.
[0048]
Then, the number of perforations of the dispersion member drive control can be changed so that the number of perforations as a reference for switching the rotation direction of the dispersion guide 7a can also be changed. information It can also be set as the system which can input. In this case, for example, instead of switching the rotation direction of the dispersion guide 7a every 10 drillings, an operation of switching every 20 drillings can be performed. Therefore, under the condition that the capacity of the tray 4 can be made relatively large, even if the number of perforations is increased, there is no hindrance to the accommodation thereof, so the frequency of rotational driving of the drive shaft 9 is also reduced, and the durability of the members is increased. Will be improved.
[0049]
FIG. 7 shows still another example, in which the lower end side of the guide hood 11 having the same shape as that shown in FIG. 2 is slightly buried in the tray 4 and coincides with the center of the tray 4 in the width direction. A dispersion member 11a having an axis is rotatably provided. The dispersion member 11a is formed by projecting to the outside of the guide hood 11 and connecting a rod 11b connected to a rotational drive mechanism (not shown) such as a motor and a spiral strip 11c formed in a spiral shape on the peripheral surface thereof. .
[0050]
The rod 11b is driven to rotate in the forward and reverse directions around its axis, and the lead of the spiral strip 11c is a neutral point in the rotational angle range of the rod 11b with the point directly below each of the perforation pins 2a and 2b as shown in FIG. It shall be such that it can be traversed in the left-right direction. The projecting length of the rod 11b of the spiral strip 11c is sufficient to catch the perforated scrap W punched by the perforating pins 2a and 2b, and can scrape the surface accumulated in the tray 4.
[0051]
In this example, when the rod 11b of the dispersion member 11a is rotated forward and backward, the spiral strip 11c traverses from side to side, so that the drilling swarf W falling from the perforation pins 2a and 2b is left and right while being hooked on the spiral strip 11c. Can be shaken off. Therefore, as in the case of the example of FIG. 4, the tray 4 can be filled so that four piles of scraps W are formed, and the drop between the valleys between the piles is small and the filling rate is low. It is possible to collect high-perforated waste W.
[0052]
When the perforated lint W accumulates in the tray 4, the central portion in the width direction of the tray 4 becomes the highest as shown in FIG. This is the same for the peak portion and the valley portion. Therefore, the perforated waste W is deposited so that the center in the width direction of the peak portion is the top.
[0053]
As shown in FIG. 8, the dispersion member 11a reaches the entire length in the longitudinal direction of the tray 4, and the rod 11b and the spiral strip 11c are perforated as the perforated waste W is deposited. You will come in contact with the deposits of Scrap W. Since the rod 11b rotates in the forward and reverse directions, the spiral strip 11c on its peripheral surface scratches the upper surface of the deposit, and the top portion of the perforated scrap W is leveled both in the width direction and in the longitudinal direction of the tray 4. To go. For this reason, instead of filling as shown in FIG. 7 (b), which is divided into peaks and valleys, almost the entire tray 4 can be formed as a piled layer of perforated litter W having the same height. The filling rate can be further increased.
[0054]
Further, even when the perforated lint W is full, the piles of deposits protruding from the upper end of the tray 4 are suppressed by the dispersion member 11a itself, so that overflow when the tray 4 is pulled out can be prevented.
[0055]
【The invention's effect】
In the present invention, since there is a dispersion member that disperses the perforated waste stream evenly toward the tray side, the perforated waste is uniformly distributed in the tray until the tray is full from the empty state. The tray can be downsized by increasing the filling efficiency. For this reason, the bulk that the tray occupies in the post-processing apparatus is reduced, and it becomes possible to improve the degree of freedom of layout by suppressing interference with other devices.
[0056]
Also, in the case where the tray is pulled out and an auxiliary booth is provided, even if the tray is pulled out when the tray is full, the overflow of the perforated scrap is collected in the auxiliary booth. There are no perforated scraps in the hood, and cleaning and maintenance inspection becomes easy.
[Brief description of the drawings]
FIG. 1 is an example of a punching processing apparatus according to the present invention, in which FIG. 1A is a longitudinal sectional view of a main part viewed in a direction orthogonal to the sheet conveying direction, and FIG. It is a longitudinal cross-sectional view by the AA arrow of the figure (a).
FIG. 3 is a plan view illustrating a main part of the toner supply device.
FIG. 2 is an example of a path for conveying a sheet from the top to the bottom, in which FIG. 2A is a longitudinal sectional view of the main part, and FIG. 2B is B- in FIG. It is a longitudinal cross-sectional view by a B line arrow.
FIG. 3 is an example provided with an oscillating dispersion member, where FIG. 3A is a cross-sectional view showing the main part, and FIG. 3B is a CC line of FIG. 3A. It is a longitudinal cross-sectional view by an arrow.
FIG. 4 is an example provided with a swinging cruciform blade as a dispersion member. FIG. 4A is a transverse cross-sectional view showing the main part, and FIG. It is a longitudinal cross-sectional view by DD arrow of no.
5 is a schematic diagram of a drive system for rotationally driving a drive shaft in the example of FIG.
6 is a control flow in the example of FIG.
7 is an example in which a rod having a spiral line is used as a dispersion member, in which (a) is a longitudinal sectional view of an essential part, and (b) is a line EE in FIG. 7 (a). It is a longitudinal cross-sectional view by an arrow.
8 is a view showing a state in which the upper surface of the perforated scraps is leveled in the example of FIG. 7, in which (a) of FIG. It is a longitudinal cross-sectional view by FF line arrow.
9A and 9B show a conventional example, in which FIG. 9A is a longitudinal sectional view of an essential part, and FIG. 9B is a longitudinal sectional view taken along line XX in FIG. 9A.
[Explanation of symbols]
1a, 1b: Pass guide
2: Punching drive mechanism
2a, 2b: perforation pins
3: Guide food
3a: Dispersion guide
3b: Ridge line
3c: Steep slope
3d: gentle slope
3e: Opening
4: Tray
4f: Auxiliary booth
5: Guide food
5a, 5b: Dispersion guide
6: Drive unit
7: Guide food
7a: Dispersion guide
8a: Drive gear
8b, 8c: driven gear
9: Drive shaft
10: Drive mechanism
11: Guide food
11a: Dispersing member
11b: Rod
11c: Spiral strip
S: Sheet

Claims

A punching processing apparatus attached to an image forming apparatus main body for punching a filing hole in a sheet discharged after image formation. The punching pin reciprocates in a direction penetrating the sheet conveyance path, and the punching pin strikes the punching processing apparatus. and a tray for receiving the chad of the sheet is pulled out, Ri Na includes a dispersion member for dispersing introducing perforation debris between the piercing pin and the tray against the tray, the dispersion member is perforated from perforated pin side The guide surface of the mountain-shaped dispersion member is provided with a ridge line protruding toward the falling flow of the scrap, and the guide surface of the mountain-shaped dispersion member has one side as a steep slope and the other as a gentle slope. A perforation processing apparatus in an image forming apparatus provided with an opening having a size through which perforation scraps can pass.

The image forming apparatus according to claim 1, further comprising a guide hood that creates a space including a portion where the perforating pin protrudes and emerges from the conveying path to form a guide path for perforating waste to the tray, and the guide hood includes a dispersion member. Perforation processing apparatus.

2. The punching processing apparatus in an image forming apparatus according to claim 1, wherein the ridge line of the mountain-shaped dispersion member is included in a vertical plane passing through substantially the center of the punching pin .

4. The perforation processing apparatus in an image forming apparatus according to claim 3, wherein a plurality of perforation pins are arranged at intervals, and the number of dispersing members having mountain-shaped guide surfaces is the same as the number of perforation pins .

A punching processing apparatus attached to an image forming apparatus main body for punching a filing hole in a sheet discharged after image formation. The punching pin reciprocates in a direction penetrating the sheet conveyance path, and the punching pin strikes the punching processing apparatus. A tray for receiving perforated scraps of the extracted sheet, and a dispersion member for dispersing and introducing perforated scraps into the tray between the perforated pins and the tray, and the dispersive member generates a perforated scrap flow from the perforated pins. And a control means for controlling the operation of the dispersing member so as to be forcibly distributed to the tray side. The control means can change the mode of operation of the dispersing member for each number of times of punching by a preset punch pin. perforating apparatus in the image forming apparatus comprising.

6. The perforation processing apparatus in an image forming apparatus according to claim 5, wherein the control means includes a system capable of setting and changing the number of perforations by a preset perforation pin .

The image forming apparatus according to claim 5 or 6, wherein the dispersing member has an impeller shape that receives a perforated scrap flow from the perforated pin and discharges the trays in opposite directions with each other by forward and reverse rotation about the axis . Perforation processing device.

A punching processing apparatus attached to an image forming apparatus main body for punching a filing hole in a sheet discharged after image formation. The punching pin reciprocates in a direction penetrating the sheet conveyance path, and the punching pin strikes the punching processing apparatus. And a tray for receiving punched scraps of the sheet that has been pulled out, and a dispersing member for dispersing and feeding punched scraps to the tray between the punching pins and the tray, and the dispersing member coincides with the arrangement direction of the punched pins This rod is arranged with an axial line that protrudes from the spiral surface on the circumferential surface, and the rod scrapes flow from the drill pin by the forward and reverse rotation of the rod in opposite directions in the axial direction of the rod due to the interference of the spiral line. Perforation processing device in an image forming apparatus that can be released to the surface.

9. The punching apparatus in an image forming apparatus according to claim 8 , wherein the peripheral surface of the spiral strip of the rod is positioned substantially the same as or slightly below the upper end of the tray .

10. The perforation processing apparatus in an image forming apparatus according to claim 5, wherein the forward / reverse rotation driving of the dispersion member is connected to a driving source of a conveying roll that conveys the sheet .

A punching processing apparatus attached to an image forming apparatus main body for punching a filing hole in a sheet discharged after image formation. The punching pin reciprocates in a direction penetrating the sheet conveyance path, and the punching pin strikes the punching processing apparatus. A tray for receiving punched scraps of the sheet that has been pulled out, and a dispersion member for dispersing and feeding punched scraps to the tray between the punching pins and the tray. A punching processing apparatus in an image forming apparatus comprising an auxiliary booth that is capable of being pulled out and collects overflow of punching debris at an end opposite to the pulling direction .