JP3652897B2

JP3652897B2 - Defective paper discharge device for folding machine

Info

Publication number: JP3652897B2
Application number: JP31584598A
Authority: JP
Inventors: 幸和小路
Original assignee: Mitsubishi Heavy Industries Ltd
Current assignee: Mitsubishi Heavy Industries Ltd
Priority date: 1998-11-06
Filing date: 1998-11-06
Publication date: 2005-05-25
Anticipated expiration: 2018-11-06
Also published as: JP2000143089A

Description

【０００１】
【発明の属する技術分野】
本発明は、輪転機の折機に適用され、始動時に発生する不良紙の排出装置に関するものである。
【０００２】
【従来の技術】
従来から、商業用輪転機等の一般的な折機には、図８および図９に示す如き、３胴形式または２胴形式の平行折り部を有するものが用いられている。
図８に示す折機の平行折り部３０は、鋸胴３１、折胴３２およびくわえ胴３３の３胴から構成されている。このような３胴形式の平行折り部３０では、図８に示す如く、輪転機の印刷部で印刷を施されて送り出されてくる連続紙Ｗを鋸胴３１と折胴３２との間に通している。これら胴間を通る連続紙Ｗの先端は、折胴３２の針装置１によって該折胴３２の外周面に沿って導かれ、鋸胴３１の鋸刃装置２と折胴３２の鋸刃受け３とによって所定寸法に断裁される。そして、この断裁された断裁紙の中央を折胴３２の折りブレード装置４の折りブレードがくわえ胴３３のくわえ装置５に差し込むことによって、断裁線に対して平行に半分に折り畳まれた折り丁Ｓ１が形成されるようになっている。
図９に示す折機の平行折り部４０は、鋸刃付き折り胴４４およびくわえ胴４３の２胴から構成されている。このような２胴形式の平行折り部４０では、図９に示す如く、輪転機の印刷部で印刷を施されて送り出されてくる連続紙Ｗを鋸刃付き折胴４４とくわえ胴４３との間に通している。これら胴間を通る連続紙Ｗの先端は、鋸刃付き折胴４４の針装置１によって当該折胴４４の外周面に沿って導かれ、鋸刃付き折胴４４の鋸刃装置２とくわえ胴４３の鋸刃受け３とによって所定寸法に断裁される。そして、この断裁された断裁紙の中央を鋸刃付き折胴４４の折りブレード装置４の折りブレードがくわえ胴４３のくわえ装置５に差し込むことによって、断裁線に対して平行に半分に折り畳まれた折り丁Ｓ１が形成されるようになっている。
【０００３】
上記平行折り部３０，４０で形成された折り丁Ｓ１は、図８および図９に示す如く、それぞれくわえ胴３３，４３と同じ周速で走行する上側搬送ベルト７ａおよび下側搬送ベルト７ｂ間に挟持されて搬送され、平行折り装置の羽根車８Ａを経て排紙コンベヤ９に移載され、輪転機から排出されて次工程へ送り出される。また、平行折り部３０，４０で形成された折り丁Ｓ１を更に半分に折り畳む印刷物の場合では、図８および図９に示す如く、それぞれの搬送経路に設けられている直角折り装置６のチョッパブレードを、上下側の搬送ベルト７ａ，７ｂによって搬送されてくる折り丁Ｓ１の中央に突っ込むことにより、折り丁Ｓ１の断裁線に対して直角方向へ半分に折り畳んだ折り丁Ｓ２が形成されるようになっている。この折り丁Ｓ２は、直角折り装置６の羽根車８Ｂを経て排紙コンベヤ９に移載され、輪転機から排出されて次工程へ送り出される。
【０００４】
【発明が解決しようとする課題】
ところが、上記の如き平行折り部３０，４０を用いた従来の折機にあっては、紙通し後印刷開始までの始動時に次のような問題点を内在していた。
（１）３胴形式の平行折り部３０では鋸胴３１と折胴３２との間に連続紙Ｗが紙通しされ、また、２胴形式の平行折り部４０では鋸刃付き折胴４４とくわえ胴４３との間に連続紙Ｗが紙通しされるが、いずれの方式においても、紙通し後暫くの間、印刷部を経て送り出されてくる連続紙Ｗの張力が未だ安定しておらず、蛇行したり、縦切りまたは縦折りされた左右の紙幅も不揃いの状態になっている。この状態の連続紙Ｗが、前者は鋸胴３１の鋸刃装置２と折胴３２の鋸刃受け３とによって、また、後者は鋸刃付き折胴４４の鋸刃装置２とくわえ胴４３の鋸刃受け３とによって、所定寸法に断裁される。
そして、この不揃いで歪んだ状態のまま断裁された断裁紙は、折胴３２または鋸刃付き折胴４４の折りブレード装置４と、それぞれ相対するくわえ胴３３，４３のくわえ装置５とによって、半分に折り畳まれた折り丁Ｓ１が形成され、排紙部へ送り出される。このため、始動時には変形したり、あるいは皺の生じた断裁紙や折り丁Ｓ１によって、平行折り部３０，４０で紙詰まりが発生しやすい。しかも、一旦紙詰まりが発生すると、その除去作業に多くの人手と時間を要し、生産性を阻害する要因になるばかりか、機械を損傷させるおそれがあった。
【０００５】
（２）さらに、紙通し後暫くの間、印刷部を経て送り出されてくる連続紙Ｗは低速で走行しており、また、平行折り部３０，４０から排出され、上下側の搬送ベルト７ａ，７ｂによって搬送されてくる折り丁Ｓ１の搬送速度も遅く、折り丁Ｓ１の慣性力が小さい。このため、上記（１）項の折り丁Ｓ１の状態とも関連し、折り丁Ｓ１が羽根車８Ａの底まで到達しないことになる。また、直角折り時にも、同様にして折り丁Ｓ２が羽根車８Ｂの底まで入りきらないため、羽根車８Ａ，８Ｂで紙詰まりが発生する。したがって、この紙詰まりを防止するには、上下側の搬送ベルト７ａ，７ｂによって搬送されてくる始動時の折り丁Ｓ１が羽根車８Ａ，８Ｂに入る前に、人手によって除去する作業が必要であった。
【０００６】
本発明はこのような実状に鑑みてなされたものであって、その目的は、始動時における紙詰まりを無くすと共に、不良紙の処理に人手と時間を要せず、生産性の向上を図ることが可能な折機の不良紙排出装置を提供することにある。
【０００７】
【課題を解決するための手段】
上記従来技術の有する課題を解決するために、本発明においては、複数の胴によって構成される平行折り部を有する輪転機の折機において、前記胴のうち、両者間で連続紙を断裁する第１胴および第２胴を隣接して設け、前記第１胴および第２胴のそれぞれに、断裁される連続紙を外周面に沿って移送するための針出し入れ機構を備えた針装置を設けると共に、前記第１胴および第２胴の針位置にそれぞれの針の出し入れ位置を切り替えることが可能な針出し入れ位置切り替え手段を設け、不良紙排出時、前記第１胴の前記針出し入れ位置切り替え手段により前記針出し入れ機構を作動させて針の出し入れ位置で前記針装置の針を出すと共に、前記第２胴の前記針出し入れ位置切り替え手段により前記針出し入れ機構を作動させて針の出し入れ位置で前記針装置の針を引っ込め、前記第１胴および第２胴間を通る連続紙を前記第１胴の前記針装置の針により前記第１胴の外周面に沿って移送して断裁するように構成している。
また、本発明においては、複数の胴によって構成される平行折り部を有する輪転機の折機において、前記胴のうち、連続紙を断裁する第３胴に断裁される連続紙を外周面に沿って移送するための針装置を設け、かつ前記第３胴に折りブレード出し入れ機構を備えた折りブレード装置を設けると共に、該折りブレード装置に折りブレードの出し入れ位置を切り替えることが可能な折りブレード出し入れ位置切り替え手段を設け、不良紙排出時、前記第３胴の前記折りブレード出し入れ位置切り替え手段により前記折りブレード出し入れ機構を作動させて折りブレード出し入れ位置で前記折りブレード装置の折りブレードを引っ込め、前記第３胴を通る連続紙を前記針装置の針により前記第３胴の外周面に沿って移送して断裁するように構成している。
【０００８】
【発明の実施の形態】
以下、本発明を図示の実施の形態に基づいて詳細に説明する。ここで、図１は本発明の第１実施形態に係る不良紙排出装置が適用される折機の概要を示す配置図、図２は上記折機における鋸胴の要部を一部断面にして示す側面図、図３は上記折機における折胴の要部を一部断面にして示す側面図、図４は上記折機の始動時における不良紙の排出要領を示す説明図である。
【０００９】
本発明の第１実施形態に係る商業用オフセット輪転機の折機は、図１に示す如く、印刷を施された連続紙Ｗが送り込まれてくる平行折り部１０を有しており、連続紙Ｗは印刷部を経て図示しない折機入り口の三角板またはスリッタにより半幅に縦折りまたは縦切りされて給送されるようになっている。平行折り部１０は、複数の胴、すなわち鋸胴１１（第１胴）、折胴１２（第２胴）およびくわえ胴１３よりなる３胴形式にて構成されており、連続紙Ｗは鋸胴１１と折胴１２との間で所定寸法に断裁されることによって断裁紙Ｓ０となる。そして、折り丁Ｓ１は、当該断裁紙Ｓ０を折胴１２とくわえ胴１３との間で断裁線に対して平行に半分に折り畳むことにより形成されるようになっている。
【００１０】
上記平行折り部１０の下流側には、くわえ胴１３から排出されてくる折り丁Ｓ１を挟持して排紙方向へ搬送する上下一対の搬送ベルト７ａ，７ｂが配設されており、これら搬送ベルト７ａ，７ｂの途中箇所には、搬送されてくる折り丁Ｓ１を直角方向へ半分に折り畳むための直角折り装置６が設けられ、該直角折り装置６によって折り丁Ｓ２が形成されるようになっている。
一方、搬送ベルト７ａ，７ｂの下流端の下方には、当該搬送ベルト７ａ，７ｂ間に挟持されて搬送されてきた折り丁Ｓ１を回転しながら１部づつ受け取って一定間隔で排紙する平行折りの羽根車８Ａが配設されている。また、搬送ベルト７ａ，７ｂの途中箇所の下方には、直角折り装置６によって形成された折り丁Ｓ２を回転しながら１部づつ受け取って一定間隔で排紙する直角折りの羽根車８Ｂが配設されている。そして、平行折り用羽根車８Ａおよび直角折り用羽根車８Ｂの下方には、当該平行折り用羽根車８Ａまたは直角折り用羽根車８Ｂから排紙されてくる折り丁Ｓ１，Ｓ２を載せて輪転機から排出し、次工程に送り出す排紙コンベヤ９が配設されている。
【００１１】
本発明の第１実施形態の不良紙排出装置は、上記のように構成された商業用オフセット輪転機の折機の平行折り部１０に適用されるものである。すなわち、鋸胴１１には、連続紙Ｗを所定長さに断裁する２組の公知である鋸刃装置２の他に、連続紙Ｗの前縁部を引っかけて当該鋸胴１１の外周面に沿って移送するための針出し入れ機構６１Ｂを備えた針装置１Ｂと、この針装置１Ｂの針が出てくる位置を切り替えることが可能な針出し入れ位置切り替え手段６２Ｂとが設けられている。
また、折胴１２には、鋸胴１１の鋸刃装置２を受けるための公知である鋸刃受け３と、これら鋸刃装置２および鋸刃受け３によって断裁される断裁紙Ｓ０の前縁部を引っかけて当該折胴１２の外周面に沿って移送するための針出し入れ機構６１Ａを備えた針装置１Ａと、断裁紙Ｓ０の回転方向中央部に突き出てこの断裁紙Ｓ０を半分に折り畳むカム機構を備えた公知の折りブレード装置４とがそれぞれ３組づつ内蔵されている他に、針装置１Ａの針が引っ込み始める位置（抜け始める位置）を切り替えることが可能な針出し入れ位置切り替え手段６２Ａとが設けられている。
なお、くわえ胴１３には、折胴１２の折りブレード装置４によって押し込まれた断裁紙Ｓ０の折り線部をくわえるためのカム機構を備えた３組の公知のくわえ装置５が内蔵されている。
【００１２】
上記鋸胴１１の針出し入れ機構６１Ｂは、図２に示す如く、円筒状に形成した支持部材５１の外周面に枢着されるカム１５ｂと、該カム１５ｂの外周面を転動するカムフォロワ１６ｂとを備えている。支持部材５１は、フレーム５０に取付けられ、その内部には鋸胴１１の端部が回転自在に支持されている。そして、カムフォロワ１６ｂは、針装置１Ｂの針軸１８ｂの端部にアーム１４ｂを介して取付けられている。
また、鋸胴１１の針出し入れ位置切り替え手段６２Ｂは、図示しない操作パネルのスイッチ操作または輪転機の速度信号、テンション信号などによって駆動制御されるエアシリンダ１７ｂを備えている。このエアシリンダ１７ｂの本体はフレーム５０に取付けられ、ピストンロッド６４ｂの先端はカム１５ｂ側の作動部材６５ｂに連結されている。作動部材６５ｂの基端はカム１５ｂの側面に固定されている。
【００１３】
しかも、上記カム１５ｂは、針装置１Ｂの針が出始めてから引っ込み完了するまでに鋸胴１１が約１／２回転するように形成されており、図示しない操作パネルのスイッチ操作または輪転機の速度信号、テンション信号などによりエアシリンダ１７ｂおよび作動部材６５ｂを介して正・逆方向に一定角度回転移動できるように構成されている。
針装置１Ｂの針が出始める位置は、図４（Ｂ）に示す如く、鋸胴１１の鋸刃装置２と折胴１２の鋸刃受け３が出会う直前の位置Ｐ１から鋸胴１１の回転方向（矢印方向）へ約６０度回転移動した位置Ｐ２に切り替えられるように組み立てられている。
【００１４】
上記折胴１２の針出し入れ機構６１Ａは、図３に示す如く、円筒状に形成した支持部材５２の外周面に枢着されるカム１５ａと、該カム１５ａの外周面を転動するカムフォロワ１６ａとを備えている。支持部材５２は、フレーム５０に取付けられ、その内部には折胴１２の端部が回転自在に支持されている。そして、カムフォロワ１６ａは、針装置１Ａの針軸１８ａの端部にアーム１４ａを介して取り付けられている。
また、折胴１２の針出し入れ位置切り替え手段６２Ａは、図示しない操作パネルでのスイッチ操作または輪転機の速度信号などによって駆動制御されるエアシリンダ１７ａを備えている。このエアシリンダ１７ａの本体はフレーム５０に取付けられ、ピストンロッド６４ａの先端はカム１５ａ側の作動部材６５ａに連結されている。作動部材６５ａの基端はカム１５ａの側面に固定されている。
【００１５】
しかも、上記カム１５ａは、図示しない操作パネルでのスイッチ操作または輪転機の速度信号などによりエアシリンダ１７ａおよび作動部材６５ａを介して正・逆方向に一定角度回転移動できるように構成されている。
針装置１Ａの針が抜け始める位置は、図４（Ｂ）に示す如く、印刷時の基準位置Ｐ３から鋸胴１１の鋸刃装置２と折胴１２の鋸刃受け３が出会う直前の位置Ｐ１へ、カム１５ａを一定角度回転移動させることによって針抜け位置が切り替えられるように組み立てられている。
【００１６】
一方、上記鋸胴１１の下方には、鋸胴１１の外周面に沿って導かれてきた始動時の連続紙Ｗが断裁され、針装置１Ｂの針が所定位置で引っ込むことによって、鋸胴１１の外周面から落下してくる断裁紙Ｓ０を受けて機外に排出する損紙排出コンベヤ（不良紙排出手段）１９が設けられている。
なお、本第１実施形態では、鋸胴１１および折胴１２の針出し入れ機構６１Ｂ，６１Ａにおけるそれぞれのカム１５ｂ，１５ａがいずれも支持部材５１，５２に対し回転自在に取付けられているが、これらカム１５ｂ，１５ａをそれぞれの支持部材５１，５２に固着し、支持部材５１，５２をフレーム５０に対し回転自在に取付けるようにしてもよい。また、支持部材５１，５２に正規カムを固設し、この正規カムに補助カムを移動可能に取付ける方式としてもよい。
【００１７】
次に、本実施形態の不良紙排出装置の作用について説明する。
まず、図示しない操作パネルで不良紙排出の切り替えスイッチを自動にして紙通し運転を開始すると、鋸胴１１の針出し入れ位置切り替え手段６２Ｂのエアシリンダ１７ｂが針出し入れ機構６１Ｂを構成するカム１５ｂを鋸胴１１の回転方向に回転移動させて、Ｐ１の位置で針装置１Ｂの針が出る状態にする。また、折胴１２の針出し入れ位置切り替え手段６２Ａのエアシリンダ１７ａが針出し入れ機構６１Ａを構成するカム１５ａを折胴１２の回転方向に回転移動させて、針装置１Ａの針が抜け始める位置をＰ３からＰ１の手前位置へ切り替える。
この状態で、印刷部を経て折機に送り込まれてきた連続紙Ｗが鋸胴１１と折胴１２との間に入ると、図４（Ａ）に示す如く、鋸胴１１の鋸刃装置２と折胴１２の鋸刃受け３が出会うときに鋸胴１１の針装置１Ｂが針を出し、連続紙Ｗの前縁部を突き刺すが、折胴１２の針装置１Ａは針が引っ込んだ状態になっているので、連続紙Ｗは鋸胴１１の針装置１Ｂによって該鋸胴１１の外周面に沿って移送されることになる。鋸胴１１が所定角度まで回転移動して、針装置１Ｂの針が引っ込み、次の鋸刃装置２と鋸刃受け３が出合って連続紙Ｗを所定寸法に断裁する。したがって、鋸胴１１の外周面に形成された断裁紙Ｓ０は、図４（Ｃ）に示す如く、回転している損紙排出コンベヤ１９の上に落下し、このコンベヤ１９に載って自動的に機外に排出される。
【００１８】
その後、印刷部を経て折機の平行折り部１０に送られてくる連続紙Ｗの張力が次第に安定し、損紙排出コンベヤ１９上の断裁紙Ｓ０の揃いが整い、印刷可能な状態か否かを確認し、印刷可能な状態であれば、運転開始の押しボタンを押す。そして、輪転機が次第に加速され、その加速段階で設定された速度に達すると、自動的に損紙排出“切り”の信号が発信される。この信号で、鋸胴１１および折胴１２の針出し入れ位置切り替え手段６２Ｂ，６２Ａのエアシリンダ１７ｂ、１７ａが作動して、各針出し入れ機構６１Ｂ，６１Ａのカム１５ｂ，１５ａを回転移動させ、鋸胴１１の針出し位置および折胴１２の針入れ位置をそれぞれ損紙排出時の位置から印刷運転時の基準位置に切り替える。
したがって、鋸胴１１の鋸刃装置２と折胴１２の鋸刃受け３が出合う時に、折胴１２の針装置１Ａが針を出し、連続紙Ｗの前縁部を突き刺す。このとき、鋸胴１１の針装置１Ｂは針が引っ込んだ状態になっているので、連続紙Ｗは折胴１２の針装置１Ａによって折胴１２の外周面に沿って移送され、次の鋸刃装置２と鋸刃受け３が出合って連続紙Ｗを所定寸法に断裁することになる。
【００１９】
次いで、折胴１２の折りブレード装置４が折胴１２の外周面に形成された断裁紙Ｓ０の中央部をその折りブレードでくわえ胴１３のくわえ装置５側に差し込むと、半分に折り畳まれた折り丁Ｓ１が形成される。このとき、折り畳み直前の断裁紙Ｓ０の姿勢・形状は良好になっているため、皺や紙詰まりなどが発生することはなく、折り精度の良い折り丁Ｓ１が形成される。しかも、この時点では、輪転機の速度も次第に速くなっているので、くわえ胴１３から排出され、かつ上下一対の搬送ベルト７ａ，７ｂ間に挟持されて搬送されてくる折り丁Ｓ１の慣性力も大きくなっている。
【００２０】
以上のように、本発明の第１実施形態の折機には、３胴形式の平行折り部１０の鋸胴１１に針装置１Ｂを設け、この針装置１Ｂの針が出る位置を切り替えられるようにすると共に、折胴１２の針装置１Ａの針が引っ込む位置を切り替えられるようにしている。さらに、鋸胴１１の下方には、鋸胴側で形成された始動時の断裁紙Ｓ０を機外に排出する損紙排出コンベヤ１９を設けているので、次の効果が得られる。
（１）始動時には機外から送られてくる連続紙Ｗの張力が不安定で、縦切りまたは縦折りされた左右の紙幅も不揃いの状態であるが、この状態の連続紙Ｗは折胴１２側に送られず、鋸胴１１側に導いて形成される断裁紙Ｓ０を損紙排出コンベヤ１９上に載せて機外に排出している。そして、折機に送られてくる連続紙Ｗの張力が安定し、鋸胴１１側に導いて形成される断裁紙Ｓ０の姿勢および形状が良好になった後、折胴１２とくわえ胴１３との間で折り丁Ｓ１を形成するようにしているので、不良紙による平行折り部１０での紙詰まりが発生しなくなる。したがって、従来のように紙詰まりによる除去作業が無くなり、多くの人手と時間が節減されるため、生産性が向上するばかりでなく、機械を損傷させるおそれがなくなる。
（２）それに加えて、折機に送られてくる連続紙Ｗの張力が安定し、輪転機の速度も次第に速くなった状態で、折胴１２とくわえ胴１３との間で折り丁Ｓ１を形成するようにしているので、くわえ胴１３から排出され、かつ上下一対の搬送ベルト７ａ，７ｂ間に挟持されて搬送されてくる折り丁Ｓ１の形状が良好になっている。しかも、折り丁Ｓ１の慣性力も大きくなっていることから、折り丁Ｓ１が平行折り用羽根車８Ａの底まで入り込む。また、直角折り時にも、同様にして折り丁Ｓ２が直角折り用羽根車８Ｂの底まで入り込むため、始動時における羽根車８Ａ，８Ｂでの紙詰まりが発生しなくなるほか、従来のように羽根車８Ａ，８Ｂに入る前に、人手によって除去する作業も不要となり、大幅な省人化が図れる。
【００２１】
次に、本発明を図示の第２実施形態に基づいて詳細に説明する。ここで、図５は本発明の第２実施形態に係る不良紙排出装置が適用される折機の概要を示す配置図、図６は上記折機における鋸刃付き折胴の要部を一部断面にして示す側面図、図７は上記折機の始動時における不良紙の排出要領を示す説明図である。
【００２２】
上記第１実施形態の不良紙排出装置は、３胴方式の平行折り部１０を有する折機に適用したものであるが、この第２実施形態の不良紙排出装置は、複数の胴、すなわち鋸刃付き折胴２４およびくわえ胴２３よりなる２胴形式の平行折り部２０を有する商業用オフセット輪転機の折機に適用したものであって、平行折り部２０以外の構成は第１実施形態の場合と同様である。
鋸刃付き折胴（第３胴）２４には、図５に示す如く、連続紙Ｗを所定長さに断裁する公知の鋸刃装置２と、該鋸刃装置２によって断裁される断裁紙Ｓ０の前縁部を引っかけて当該鋸刃付き折胴２４の外周面に沿って移送するためのカム機構を備えた公知の針装置１と、この針装置１によって導かれた断裁紙Ｓ０の回転方向中央部に突き出てこの断裁紙Ｓ０を半分に折り畳むための折りブレード出し入れ機構７１を備えた折りブレード装置４Ｃとをそれぞれ２組づつ内蔵している他に、この折りブレード装置４Ｃの折りブレードが出る位置を切り替えることが可能な折りブレード出し入れ位置切り替え手段７２を設けている。
また、くわえ胴２３には、鋸刃付き折胴２４の鋸刃装置２を受けるための公知の鋸刃受け３と、鋸刃付き折胴２４の折りブレードによって押し込まれた断裁紙Ｓ０の折り線部をくわえるためのカム機構を備えた公知のくわえ装置５がそれぞれ２組づつ内蔵されている。
【００２３】
上記鋸刃付き折胴２４の折りブレード出し入れ機構７１は、図６に示す如く、円筒状に形成した支持部材５３の外周面に回転自在に取付けられるカム２５と、該カム２５の外周面を転動するカムフォロワ２６とを備えている。支持部材５３は、フレーム５０に取付けられ、その内部には鋸刃付き折胴２４の端部が回転自在に支持されている。そして、カムフォロワ２６は、折りブレード装置４Ｃの折りブレード軸２８の端部にアーム２４を介して取付けられている。
また、鋸刃付き折胴２４の折りブレード出し入れ位置切り替え手段７２は、図示しない操作パネルでのスイッチ操作または輪転機の速度信号、テンション信号などによって駆動制御されるエアシリンダ２７を備えている。このエアシリンダ２７の本体はフレーム５０に取付けられ、ピストンロッド７３の先端はカム２５側の作動部材７４に連結されている。作動部材７４の基端はカム２５の側面に固定されている。
【００２４】
しかも、上記カム２５は、図示しない操作パネルでのスイッチ操作または輪転機の速度信号、テンション信号などによってエアシリンダ２７および作動部材７４を介して正・逆方向に一定角度回転移動できるように構成されている。
鋸刃付き折胴２４における折りブレード装置４Ｃの折りブレードが出る位置は、図７（Ｂ）に示す如く、鋸刃付き折胴２４の折りブレード装置４Ｃがくわえ胴２３のくわえ装置５と出合う位置Ｑ１から鋸刃付き折胴２４の回転方向に一定角度回転移動した位置Ｑ２に切り替えられるように組み立てられている。
【００２５】
一方、上記鋸刃付き折胴２４の下方には、鋸刃付き折胴２４の外周面に沿って針装置１により導かれてきた始動時の連続紙Ｗが断裁され、くわえ胴２３のくわえ装置５に押し込まれずに鋸刃付き折胴２４から落下してくる断裁紙Ｓ０を受けて機外に排出する損紙排出コンベヤ（不良紙排出手段）２９が設けられている。なお、本第２実施形態では、折りブレード出し入れ機構７１のカム２５が支持部材５３の外周面を回動する機構にしているが、この機構の他の応用例は、第１実施形態に記載のものと同じである。
【００２６】
次に、本実施形態の不良紙排出装置の作用について説明する。
まず、図示しない操作パネルで不良紙排出の切り替えスイッチを自動にして紙通し運転を開始すると、鋸刃付き折胴２４の折りブレード出し入れ位置切り替え手段７２のエアシリンダ２７が折りブレード出し入れ機構７１のカム２５を鋸刃付き折胴２４の回転方向に回転移動させて、図７（Ｂ）に示す如く、Ｑ２の位置で折りブレードが出る状態にする。
この状態で、印刷部を経て折機に送り込まれてきた連続紙Ｗが鋸刃付き折胴２４とくわえ胴２３との間に入ると、鋸刃付き折胴２４の鋸刃装置２とくわえ胴２３の鋸刃受け３が出合うときに鋸刃付き折胴２４の針装置１の針が出て連続紙Ｗの前縁部を突き刺す。連続紙Ｗは、鋸刃付き折胴２４の針によってこの胴２４の外周面に沿って移送されることになる。鋸刃付き折胴２４が所定角度まで回転移動し、この胴２４の折りブレード装置４Ｃとくわえ胴２３のくわえ装置５が出合う位置にきても、図７（Ａ）に示す如く、鋸刃付き折胴２４の折りブレードは引っ込んだ状態になっている。このため、連続紙Ｗは、くわえ折りが行われないまま、鋸刃付き折胴２４の外周面に沿って導かれ、次の鋸刃装置２と鋸刃受け３によって所定寸法に断裁される。したがって、鋸刃付き折胴２４の外周面に形成された断裁紙Ｓ０は、図７（Ｃ）に示す如く、回転している損紙排出コンベヤ２９の上に落下し、このコンベヤ２９に載って自動的に機外に排出される。
【００２７】
その後、印刷部を経て折機の平行折り部２０に送られてくる連続紙Ｗの張力が次第に安定し、損紙排出コンベヤ２９上の断裁紙Ｓ０の揃いが整い、印刷可能な状態か否かを確認し、印刷可能な状態であれば、運転開始の押しボタンを押す。そして、輪転機の速度が次第に加速され、その加速段階で設定された速度に達すると、自動的に損紙排出“切り”の信号が発信される。この信号で折りブレード出し入れ位置切り替え手段７２のエアシリンダ２７が作動して、折りブレード出し入れ機構７１のカム２５を回転移動させ、鋸刃付き折胴２４の折りブレードが出る位置を損紙排出時の位置から印刷運転時の基準位置に切り替える。
したがって、鋸刃付き折胴２４の外周面に沿って移送されていた連続紙Ｗは、鋸刃付き折胴２４の折りブレード装置４Ｃとくわえ胴２３のくわえ装置５が出合うタイミングに合わせて、連続紙Ｗの前縁部を突き刺していた針装置１の針が抜け、折りブレードが断裁長の中央部をくわえ胴２３のくわえ装置５に差し込む。
【００２８】
次いで、連続紙Ｗは鋸刃付き折胴２４の鋸刃装置２とくわえ胴２３の鋸刃受け３によって所定寸法に断裁され、断裁紙Ｓ０を半分に折り畳んだ折り丁Ｓ１が形成される。このとき、折り畳み直前の連続紙Ｗの姿勢・形状は良好になっているため、皺や紙詰まりなどが発生することはなく、折り精度の良い折り丁Ｓ１が形成される。しかも、この時点では、輪転機の速度も次第に速くなってきているので、くわえ胴２３から排出され、かつ上下一対の搬送ベルト７ａ，７ｂ間に挟持されて搬送されてくる折り丁Ｓ１の慣性力も大きくなっている。
【００２９】
以上のように、本発明の第２実施形態の折機には、２胴形式の平行折り部２０の鋸刃付き折胴２４に折りブレード出し入れ機構７１のカム２５と折りブレード出し入れ位置切り替え手段７２を設け、折りブレードが出る位置を始動時と印刷運動時で切り替えられるようにしている。さらに、鋸刃付き折胴２４の下方には、始動時に形成された不揃い状態の断裁紙Ｓ０を機外に排出する損紙排出コンベヤ２９を設けているので、第１実施形態の場合と同様の効果が得られる。
【００３０】
以上、本発明の実施の形態につき述べたが、本発明は既述の実施の形態に限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々の変形および変更を加え得るものである。例えば、既述の実施の形態では、紙通し運転の開始を押しボタンを押すことにより行っているが、輪転機のテンションなどを検出することにより自動的に排出方向の切換え、印刷運転を連続（シーケンシャル）的に行うようにしてもよい。
【００３１】
【発明の効果】
上述の如く、本発明に係る折機の不良紙排出装置は、複数の胴によって構成される平行折り部を有する輪転機の折機において、前記胴のうち、両者間で連続紙を断裁する第１胴および第２胴を隣接して設け、前記第１胴および第２胴のそれぞれに、断裁される連続紙を外周面に沿って移送するための針出し入れ機構を備えた針装置を設けると共に、前記第１胴および第２胴の針位置にそれぞれの針の出し入れ位置を切り替えることが可能な針出し入れ位置切り替え手段を設け、不良紙排出時、前記第１胴の前記針出し入れ位置切り替え手段により前記針出し入れ機構を作動させて針の出し入れ位置で前記針装置の針を出すと共に、前記第２胴の前記針出し入れ位置切り替え手段により前記針出し入れ機構を作動させて針の出し入れ位置で前記針装置の針を引っ込め、前記第１胴および第２胴間を通る連続紙を前記第１胴の前記針装置の針により前記第１胴の外周面に沿って移送して断裁するように構成しているので、始動時における紙詰まりが発生しなくなり、紙詰まりによる除去作業を行わずに済み、不良紙の処理に要する人手と時間を節減でき、生産性の向上および機械の耐久性向上を図ることができる。
また、本発明に係る折機の不良紙排出装置は、複数の胴によって構成される平行折り部を有する輪転機の折機において、前記胴のうち、連続紙を断裁する第３胴に断裁される連続紙を外周面に沿って移送するための針装置を設け、かつ前記第３胴に折りブレード出し入れ機構を備えた折りブレード装置を設けると共に、該折りブレード装置に折りブレードの出し入れ位置を切り替えることが可能な折りブレード出し入れ位置切り替え手段を設け、不良紙排出時、前記第３胴の前記折りブレード出し入れ位置切り替え手段により前記折りブレード出し入れ機構を作動させて折りブレード出し入れ位置で前記折りブレード装置の折りブレードを引っ込め、前記第３胴を通る連続紙を前記針装置の針により前記第３胴の外周面に沿って移送して断裁するように構成しているので、上記発明と同様の効果を得ることができる。
【図面の簡単な説明】
【図１】本発明の第１実施形態に係る不良紙排出装置が適用される折機の概要を示す概念図である。
【図２】本発明の第１実施形態の折機における鋸胴の要部を一部断面にして示す側面図である。
【図３】本発明の第１実施形態の折機における折胴の要部を一部断面にして示す側面図である。
【図４】（Ａ）〜（Ｃ）は本発明の第１実施形態に係る折機の始動時における不良紙の排出要領を説明する概念図である。
【図５】本発明の第２実施形態に係る不良紙排出装置が適用される折機の概要を示す概念図である。
【図６】本発明の第２実施形態の折機における鋸刃付き折胴の要部を一部断面にして示す側面図である。
【図７】（Ａ）〜（Ｃ）は本発明の第２実施形態に係る折機の始動時における不良紙の排出要領を説明する概念図である。
【図８】３胴形式の平行折り部を有する従来の折機の概要を示す概念図である。
【図９】２胴形式の平行折り部を有する従来の折機の概要を示す概念図である。
【符号の説明】
１，１Ａ，１Ｂ針装置
２鋸刃装置
３鋸刃受け
４，４Ｃ折りブレード装置
５くわえ装置
６直角折り装置
７ａ，７ｂ搬送ベルト
８Ａ，８Ｂ羽根車
９排紙コンベヤ
１０，２０平行折り部
１１鋸胴（第１胴）
１２折胴（第２胴）
１３，２３くわえ胴
１４ａ，１４ｂアーム
１５ａ，１５ｂカム
１６ａ，１６ｂカムフォロワ
１７ａ，１７ｂエアシリンダ
１８ａ，１８ｂ針軸
１９，２９損紙排出コンベヤ（不良紙排出手段）
２４鋸刃付き折胴（第３胴）
２５カム
２６カムフォロワ
２７エアシリンダ
２８ブレード軸
５０フレーム
５１，５２，５３支持部材
６１Ａ，６１Ｂ針出し入れ機構
６２Ａ，６２Ｂ針出し入れ位置切り替え手段
６４ａ，６４ｂピストンロッド
６５ａ，６５ｂ作動部材
７１折りブレード出し入れ機構
７２折りブレード出し入れ位置切り替え手段
Ｗ連続紙
Ｓ０断裁紙
Ｓ１，Ｓ２折り丁[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for discharging defective paper that is applied to a rotary machine of a rotary press and is generated at the time of starting.
[0002]
[Prior art]
Conventionally, a general folding machine such as a commercial rotary press has a three-cylinder type or a two-cylinder type parallel folding part as shown in FIGS.
The parallel folding unit 30 of the folding machine shown in FIG. 8 includes three cylinders, a saw cylinder 31, a folding cylinder 32, and a holding cylinder 33. In such a three-cylinder type parallel folding section 30, as shown in FIG. 8, the continuous paper W printed and fed out by the printing section of the rotary press is passed between the saw cylinder 31 and the folding cylinder 32. ing. The leading edge of the continuous paper W passing between these cylinders is guided along the outer peripheral surface of the folding cylinder 32 by the needle device 1 of the folding cylinder 32, and the saw blade apparatus 2 of the saw cylinder 31 and the saw blade receiver 3 of the folding cylinder 32. And cut to a predetermined size. Then, by inserting the folding blade of the folding blade device 4 of the folding cylinder 32 into the holding device 5 of the holding cylinder 33 at the center of the cut cutting paper, the signature S1 folded in half parallel to the cutting line. Is to be formed.
The parallel folding section 40 of the folding machine shown in FIG. 9 is composed of two cylinders, a folding cylinder 44 with a saw blade and a holding cylinder 43. In such a two-cylinder type parallel folding section 40, as shown in FIG. 9, the continuous paper W printed by the printing section of the rotary press is fed between the folding cylinder 44 with a saw blade and the holding cylinder 43. It goes through. The leading edge of the continuous paper W passing between the cylinders is guided along the outer peripheral surface of the folding cylinder 44 by the needle device 1 of the folding cylinder 44 with a saw blade, and the saw blade apparatus 2 and the holding cylinder of the folding cylinder 44 with a saw blade. It is cut into a predetermined size by 43 saw blade receivers 3. Then, the folding blade of the folding blade device 4 of the folding cylinder 44 with the saw blade is inserted into the holding device 5 of the holding cylinder 43 at the center of the cut cutting paper, and is folded in half parallel to the cutting line. A signature S1 is formed.
[0003]
As shown in FIGS. 8 and 9, the signature S1 formed by the parallel folding portions 30 and 40 is disposed between the upper conveyor belt 7a and the lower conveyor belt 7b, which travel at the same peripheral speed as the holding cylinders 33 and 43, respectively. The paper is sandwiched and conveyed, transferred to the paper discharge conveyor 9 through the impeller 8A of the parallel folding device, discharged from the rotary press, and sent to the next process. Further, in the case of a printed matter in which the signature S1 formed by the parallel folding portions 30 and 40 is further folded in half, as shown in FIGS. 8 and 9, the chopper blade of the right-angle folding device 6 provided in each conveyance path. Is pushed into the center of the signature S1 conveyed by the upper and lower conveying belts 7a and 7b, so that a signature S2 folded in half in a direction perpendicular to the cutting line of the signature S1 is formed. It has become. The signature S2 is transferred to the paper discharge conveyor 9 through the impeller 8B of the right-angle folding device 6, discharged from the rotary press, and sent to the next process.
[0004]
[Problems to be solved by the invention]
However, in the conventional folding machine using the parallel folding parts 30 and 40 as described above, the following problems are inherent at the start-up after the paper threading until the start of printing.
(1) In the three-cylinder type parallel folding section 30, the continuous paper W is passed between the saw cylinder 31 and the folding cylinder 32, and the two-cylinder type parallel folding section 40 is combined with a folding cylinder 44 with a saw blade. Although the continuous paper W is passed through the cylinder 43, the tension of the continuous paper W fed out through the printing unit is not yet stable for a while after passing through the cylinder 43, The widths of the left and right papers meandering, vertically cut or vertically folded are also uneven. The continuous paper W in this state is the former of the saw blade device 2 of the saw drum 31 and the saw blade receiver 3 of the folding drum 32, and the latter is the saw blade device 2 of the folding drum 44 with the saw blade and the holding drum 43. It is cut into a predetermined dimension by the saw blade receiver 3.
Then, the cut paper cut in an irregular and distorted state is half by the folding blade device 4 of the folding cylinder 32 or the folding cylinder 44 with a saw blade and the holding devices 5 of the holding cylinders 33 and 43 facing each other. A signature S1 is formed, and is sent out to the paper discharge unit. For this reason, a paper jam is likely to occur at the parallel folding sections 30 and 40 due to the cut paper or signature S1 that is deformed or wrinkled at the start. Moreover, once a paper jam occurs, it takes a lot of manpower and time to remove the paper jam, which not only becomes a factor that hinders productivity, but also has a risk of damaging the machine.
[0005]
(2) Further, for a while after the paper is passed, the continuous paper W fed out through the printing section is running at a low speed, and is discharged from the parallel folding sections 30 and 40, and the upper and lower transport belts 7a, The conveyance speed of the signature S1 conveyed by 7b is also slow, and the inertial force of the signature S1 is small. For this reason, the signature S1 does not reach the bottom of the impeller 8A in relation to the state of the signature S1 in the item (1). Similarly, even when the paper is folded at right angles, the signature S2 does not completely reach the bottom of the impeller 8B, so that a paper jam occurs in the impellers 8A and 8B. Therefore, in order to prevent this paper jam, it is necessary to manually remove the signature S1 at the time of starting conveyed by the upper and lower conveying belts 7a and 7b before entering the impellers 8A and 8B. It was.
[0006]
The present invention has been made in view of such a situation, and an object of the present invention is to eliminate paper jam at the time of start-up, and to improve productivity without requiring manual labor and time for processing defective paper. An object of the present invention is to provide a defective paper discharge device for a folding machine.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problems of the prior art, in the present invention, in a rotary machine of a rotary press having a parallel folding portion constituted by a plurality of cylinders, the continuous paper is cut between both of the cylinders. A first cylinder and a second cylinder are provided adjacent to each other, and each of the first cylinder and the second cylinder is provided with a needle device having a needle insertion / removal mechanism for transferring the continuous paper to be cut along the outer peripheral surface. The first Trunk And a needle insertion / removal position switching means capable of switching the insertion / removal position of each needle to the needle position of the second body. When the defective paper is discharged, the needle loading / unloading mechanism of the first cylinder is operated by the needle loading / unloading position switching means to eject the needle of the needle device at the needle loading / unloading position, and the needle loading / unloading position of the second cylinder is switched. The needle insertion / removal mechanism is operated by means to retract the needle of the needle device at the needle insertion / removal position, and the continuous paper passing between the first and second cylinders is moved by the needle of the needle apparatus of the first cylinder. It is configured to cut along the outer circumference of one cylinder. ing.
Further, in the present invention, in the rotary machine of the rotary press having a parallel folding portion constituted by a plurality of cylinders, among the cylinders, a third cylinder for cutting continuous paper. A needle device is provided for transferring the continuous paper to be cut along the outer peripheral surface, and the third cylinder is provided with the needle device. A folding blade device having a folding blade loading / unloading mechanism is provided, and a folding blade loading / unloading position switching means capable of switching the folding blade loading / unloading position is provided in the folding blade device. When the defective paper is discharged, the folding blade loading / unloading mechanism is operated by the folding blade loading / unloading position switching means of the third cylinder to retract the folding blade of the folding blade device at the folding blade loading / unloading position, and continuously through the third cylinder. The paper is cut along the outer peripheral surface of the third drum by the needle of the needle device. ing.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail based on illustrated embodiments. Here, FIG. 1 is a layout view showing an outline of a folding machine to which the defective paper discharge device according to the first embodiment of the present invention is applied, and FIG. 2 is a partial cross-sectional view of the main part of the saw cylinder in the folding machine. FIG. 3 is a side view showing a partial section of the main part of the folding cylinder in the folding machine, and FIG. 4 is an explanatory diagram showing a procedure for discharging defective paper when the folding machine is started.
[0009]
The commercial offset rotary press according to the first embodiment of the present invention has a parallel folding section 10 into which a continuous paper W on which printing has been performed is fed, as shown in FIG. W is fed through a printing unit by being vertically folded or vertically cut in half by a triangular plate or slitter at the folding machine entrance (not shown). The parallel folding unit 10 is configured in a three-cylinder form including a plurality of cylinders, that is, a saw cylinder 11 (first cylinder), a folding cylinder 12 (second cylinder), and a holding cylinder 13, and the continuous paper W is a saw cylinder. By being cut into a predetermined dimension between 11 and the folding cylinder 12, the cut paper S0 is obtained. The signature S1 is formed by folding the cut paper S0 in half between the folding cylinder 12 and the holding cylinder 13 in parallel to the cutting line.
[0010]
A pair of upper and lower transport belts 7a and 7b that sandwich the signature S1 discharged from the gripping cylinder 13 and transport it in the paper discharge direction are disposed on the downstream side of the parallel folding section 10, and these transport belts. A right-angle folding device 6 for folding the conveyed signature S1 in half in the right-angle direction is provided in the middle of 7a, 7b, and the signature S2 is formed by the right-angle folding device 6. Yes.
On the other hand, below the downstream ends of the conveyor belts 7a and 7b, parallel folding is performed in which the signature S1 held between and conveyed by the conveyor belts 7a and 7b is rotated and received one by one and discharged at regular intervals. The impeller 8A is disposed. Further, below the middle part of the conveyor belts 7a and 7b, there is disposed a right-angle folding impeller 8B that receives one copy at a time while rotating the signature S2 formed by the right-angle folding device 6 and discharges it at regular intervals. Has been. Then, under the parallel folding impeller 8A and the right folding impeller 8B, signatures S1 and S2 discharged from the parallel folding impeller 8A or the right folding impeller 8B are placed and the rotary press. A paper discharge conveyor 9 is provided for discharging from the printer and sending it to the next process.
[0011]
The defective paper discharge device according to the first embodiment of the present invention is applied to the parallel folding portion 10 of the folding machine of the commercial offset rotary press configured as described above. That is, in addition to the two known saw blade devices 2 for cutting the continuous paper W into a predetermined length, the saw drum 11 is hooked with the front edge of the continuous paper W to the outer peripheral surface of the saw drum 11. A needle device 1B provided with a needle insertion / removal mechanism 61B for transporting along the needle and a needle insertion / removal position switching means 62B capable of switching the position where the needle of the needle device 1B comes out are provided.
Further, the folding cylinder 12 includes a known saw blade receiver 3 for receiving the saw blade device 2 of the saw cylinder 11, and a leading edge portion of the cut paper S0 cut by the saw blade device 2 and the saw blade receiver 3. A needle device 1A provided with a needle take-in / out mechanism 61A for transporting along the outer peripheral surface of the folding cylinder 12 and a cam mechanism for protruding the cut paper S0 in half by protruding to the center in the rotational direction of the cut paper S0 In addition to three built-in known folding blade devices 4 each having a needle, a needle insertion / exit position switching means 62A capable of switching a position at which the needle of the needle device 1A starts to retract (a position at which the needle starts to retract) is provided. Is provided.
The holding cylinder 13 incorporates three sets of known holding apparatuses 5 having a cam mechanism for holding the folding line portion of the cut paper S0 pushed by the folding blade apparatus 4 of the folding cylinder 12.
[0012]
As shown in FIG. 2, the needle take-in / out mechanism 61B of the saw cylinder 11 includes a cam 15b pivotally attached to the outer peripheral surface of a cylindrical support member 51, and a cam follower 16b that rolls on the outer peripheral surface of the cam 15b. It has. The support member 51 is attached to the frame 50, and the end of the saw cylinder 11 is rotatably supported therein. The cam follower 16b is attached to the end of the needle shaft 18b of the needle device 1B via the arm 14b.
The needle insertion / exit position switching means 62B of the saw cylinder 11 includes an air cylinder 17b that is driven and controlled by a switch operation of an operation panel (not shown), a speed signal of a rotary press, a tension signal, or the like. The main body of the air cylinder 17b is attached to the frame 50, and the tip of the piston rod 64b is connected to the operating member 65b on the cam 15b side. The base end of the operating member 65b is fixed to the side surface of the cam 15b.
[0013]
In addition, the cam 15b is formed so that the saw cylinder 11 rotates about 1/2 from the start of the needle of the needle device 1B until the retraction is completed, and the switch operation of an operation panel (not shown) or the speed of the rotary press A signal, a tension signal, and the like are configured so as to be able to rotate at a predetermined angle in the forward and reverse directions via the air cylinder 17b and the operating member 65b.
As shown in FIG. 4B, the position at which the needle of the needle device 1B begins to come out is the rotational direction of the saw drum 11 from the position P1 immediately before the saw blade device 2 of the saw drum 11 and the saw blade receiver 3 of the folding drum 12 meet. It is assembled so that it can be switched to a position P2 that has been rotated about 60 degrees in the direction of the arrow.
[0014]
As shown in FIG. 3, the needle taking-in / out mechanism 61A of the folding cylinder 12 includes a cam 15a pivotally attached to the outer peripheral surface of a cylindrical support member 52, and a cam follower 16a rolling on the outer peripheral surface of the cam 15a. It has. The support member 52 is attached to the frame 50, and the end of the folding cylinder 12 is rotatably supported therein. The cam follower 16a is attached to the end of the needle shaft 18a of the needle device 1A via the arm 14a.
The needle insertion / exit position switching means 62A of the folding cylinder 12 includes an air cylinder 17a that is driven and controlled by a switch operation on an operation panel (not shown) or a speed signal of a rotary press. The main body of the air cylinder 17a is attached to the frame 50, and the tip of the piston rod 64a is connected to the operating member 65a on the cam 15a side. The base end of the operating member 65a is fixed to the side surface of the cam 15a.
[0015]
In addition, the cam 15a is configured to be able to rotate at a predetermined angle in the forward and reverse directions via the air cylinder 17a and the operating member 65a by a switch operation on an operation panel (not shown) or a speed signal of a rotary press.
As shown in FIG. 4B, the position at which the needle of the needle device 1A begins to come off is a position P1 immediately before the saw blade device 2 of the saw cylinder 11 and the saw blade receiver 3 of the folding cylinder 12 meet from the reference position P3 during printing. The needle 15 is assembled so that the needle removal position can be switched by rotating the cam 15a by a predetermined angle.
[0016]
On the other hand, below the saw cylinder 11, the continuous paper W at the time of starting guided along the outer peripheral surface of the saw cylinder 11 is cut, and the needle of the needle device 1B is retracted at a predetermined position, whereby the saw cylinder 11 is cut. A waste paper discharge conveyor (defective paper discharge means) 19 for receiving the cut paper S0 falling from the outer peripheral surface of the paper and discharging it to the outside of the machine is provided.
In the first embodiment, the cams 15b and 15a in the needle loading / unloading mechanisms 61B and 61A of the saw cylinder 11 and the folding cylinder 12 are both rotatably attached to the support members 51 and 52. The cams 15 b and 15 a may be fixed to the respective support members 51 and 52, and the support members 51 and 52 may be rotatably attached to the frame 50. Alternatively, a regular cam may be fixed to the support members 51 and 52, and an auxiliary cam may be movably attached to the regular cam.
[0017]
Next, the operation of the defective paper discharge device of this embodiment will be described.
First, when the paper threading operation is started by automatically operating the defective paper discharge changeover switch on the operation panel (not shown), the air cylinder 17b of the needle insertion / removal position switching means 62B of the saw barrel 11 saws the cam 15b constituting the needle insertion / removal mechanism 61B. The body 11 is rotated in the rotational direction so that the needle of the needle device 1B comes out at the position P1. Further, the air cylinder 17a of the needle insertion / removal position switching means 62A of the folding cylinder 12 rotates the cam 15a constituting the needle insertion / removal mechanism 61A in the rotation direction of the folding cylinder 12, and the position where the needle of the needle device 1A begins to come off is P3. To the position before P1.
In this state, when the continuous paper W fed into the folding machine through the printing unit enters between the saw cylinder 11 and the folding cylinder 12, the saw blade device 2 of the saw cylinder 11 is shown in FIG. When the saw blade receiver 3 of the folding cylinder 12 meets, the needle device 1B of the saw cylinder 11 takes out the needle and pierces the front edge of the continuous paper W, but the needle device 1A of the folding cylinder 12 is in a state in which the needle is retracted. Therefore, the continuous paper W is transported along the outer peripheral surface of the saw cylinder 11 by the needle device 1B of the saw cylinder 11. The saw body 11 rotates and moves to a predetermined angle, the needle of the needle device 1B retracts, and the next saw blade device 2 and the saw blade receiver 3 come together to cut the continuous paper W into a predetermined size. Therefore, the cut paper S0 formed on the outer peripheral surface of the saw cylinder 11 falls on the rotating waste paper discharge conveyor 19 and is automatically placed on the conveyor 19 as shown in FIG. It is discharged outside the machine.
[0018]
Thereafter, the tension of the continuous paper W sent to the parallel folding unit 10 of the folding machine through the printing unit is gradually stabilized, and the cut paper S0 on the waste paper discharge conveyor 19 is aligned, and whether or not printing is possible. If it is ready to print, press the start button. When the rotary press is gradually accelerated and reaches a speed set in the acceleration stage, a signal for discharging the waste paper is automatically transmitted. In response to this signal, the air cylinders 17b and 17a of the needle loading / unloading position switching means 62B and 62A of the saw cylinder 11 and the folding cylinder 12 are operated to rotate and move the cams 15b and 15a of the needle loading and unloading mechanisms 61B and 61A. 11 is switched from the position at which the waste paper is discharged to the reference position at the time of printing operation.
Therefore, when the saw blade device 2 of the saw drum 11 and the saw blade receiver 3 of the folding drum 12 meet, the needle device 1A of the folding drum 12 takes out the needle and pierces the front edge of the continuous paper W. At this time, since the needle device 1B of the saw cylinder 11 is in a state in which the needle is retracted, the continuous paper W is transferred along the outer peripheral surface of the folding cylinder 12 by the needle device 1A of the folding cylinder 12, and the next saw blade The apparatus 2 and the saw blade receiver 3 meet to cut the continuous paper W into a predetermined size.
[0019]
Next, when the folding blade device 4 of the folding cylinder 12 inserts the central portion of the cut paper S0 formed on the outer peripheral surface of the folding cylinder 12 into the holding device 5 side of the holding cylinder 13 with the folding blade, the folding is folded in half. Ding S1 is formed. At this time, since the posture and shape of the cutting paper S0 immediately before folding are good, the signature S1 with high folding accuracy is formed without causing wrinkles or paper jams. In addition, since the speed of the rotary press gradually increases at this point, the inertial force of the signature S1 that is discharged from the gripping cylinder 13 and held between the pair of upper and lower conveying belts 7a and 7b is also large. It has become.
[0020]
As described above, in the folding machine according to the first embodiment of the present invention, the needle device 1B is provided in the saw drum 11 of the three-cylinder type parallel folding section 10 so that the position of the needle of the needle device 1B can be switched. In addition, the position in which the needle of the needle device 1A of the folding cylinder 12 is retracted can be switched. Furthermore, since the waste paper discharge conveyor 19 for discharging the cut paper S0 at the start formed on the saw cylinder side to the outside of the machine is provided below the saw cylinder 11, the following effects can be obtained.
(1) At the time of start-up, the tension of the continuous paper W sent from outside the machine is unstable, and the widths of the left and right papers that have been vertically cut or vertically folded are not uniform. The cut paper S0 which is not sent to the side but is led to the side of the saw cylinder 11 is placed on the waste paper discharge conveyor 19 and discharged outside the machine. After the tension of the continuous paper W sent to the folding machine is stabilized and the posture and shape of the cut paper S0 formed by being guided to the saw cylinder 11 side are improved, the folding cylinder 12 and the holding cylinder 13 Since the signature S1 is formed between the two, the paper jam at the parallel folding portion 10 due to defective paper does not occur. Therefore, the removal work due to a paper jam as in the prior art is eliminated, and a lot of manpower and time are saved, so that not only productivity is improved, but there is no possibility of damaging the machine.
(2) In addition, with the tension of the continuous paper W sent to the folding machine stabilized and the speed of the rotary press gradually increased, the signature S1 is moved between the folding cylinder 12 and the holding cylinder 13. Since it is formed, the shape of the signature S1 that is discharged from the gripping cylinder 13 and is conveyed while being sandwiched between the pair of upper and lower conveying belts 7a and 7b is good. Moreover, since the inertial force of the signature S1 is also increased, the signature S1 enters the bottom of the parallel folding impeller 8A. In addition, the signature S2 similarly enters the bottom of the right-angle folding impeller 8B during right-angle folding, so that paper jams at the impellers 8A and 8B at the time of starting do not occur, and the impeller as in the prior art Prior to entering 8A and 8B, manual removal work is not necessary, and a significant labor saving can be achieved.
[0021]
Next, the present invention will be described in detail based on the illustrated second embodiment. Here, FIG. 5 is a layout view showing an outline of a folding machine to which the defective paper discharge device according to the second embodiment of the present invention is applied, and FIG. 6 is a partial view of a main part of a folding cylinder with a saw blade in the folding machine. FIG. 7 is a side view showing the cross section, and FIG. 7 is an explanatory view showing how to discharge the defective paper when the folding machine is started.
[0022]
The defective paper discharge device according to the first embodiment is applied to a folding machine having a three-cylinder parallel folding unit 10. The defective paper discharge device according to the second embodiment has a plurality of cylinders, that is, saws. The present invention is applied to a folding machine of a commercial offset rotary press having a two-body type parallel folding part 20 composed of a bladed folding cylinder 24 and a holding cylinder 23. The configuration other than the parallel folding part 20 is the same as that of the first embodiment. Same as the case.
As shown in FIG. 5, the folding cylinder with a saw blade (third cylinder) 24 includes a known saw blade device 2 for cutting the continuous paper W into a predetermined length, and a cut paper S 0 cut by the saw blade device 2. The known needle device 1 provided with a cam mechanism for hooking the front edge portion and transferring it along the outer peripheral surface of the folding blade 24 with saw blade, and the rotation direction of the cutting paper S0 guided by the needle device 1 Two folding blade devices 4C each having a folding blade inserting / removing mechanism 71 for folding the cut sheet S0 in half are projected in the center, and the folding blades of the folding blade device 4C are provided. Folding blade loading / unloading position switching means 72 capable of switching positions is provided.
The holding cylinder 23 has a known saw blade receiver 3 for receiving the saw blade device 2 of the folding cylinder 24 with a saw blade, and a folding line of the cut paper S0 pushed by the folding blade of the folding cylinder 24 with the saw blade. Two sets of well-known holding devices 5 each having a cam mechanism for holding the portions are incorporated.
[0023]
As shown in FIG. 6, the folding blade inserting / removing mechanism 71 of the folding cylinder 24 with a saw blade includes a cam 25 that is rotatably attached to the outer peripheral surface of a cylindrical support member 53, and rotates the outer peripheral surface of the cam 25. And a cam follower 26 that moves. The support member 53 is attached to the frame 50, and an end portion of the folding cylinder 24 with a saw blade is rotatably supported therein. The cam follower 26 is attached to the end of the folding blade shaft 28 of the folding blade device 4C via the arm 24.
The folding blade insertion / exit position switching means 72 of the folding cylinder 24 with a saw blade includes an air cylinder 27 that is driven and controlled by a switch operation on an operation panel (not shown), a speed signal of a rotary press, a tension signal, or the like. The main body of the air cylinder 27 is attached to the frame 50, and the tip of the piston rod 73 is connected to the operating member 74 on the cam 25 side. The base end of the actuating member 74 is fixed to the side surface of the cam 25.
[0024]
Moreover, the cam 25 is configured to be able to rotate at a predetermined angle in the forward / reverse direction via the air cylinder 27 and the operating member 74 by a switch operation on an operation panel (not shown) or a speed signal of a rotary press, a tension signal, or the like. ing.
The position where the folding blade of the folding blade device 4C comes out in the folding cylinder 24 with saw blade is a position where the folding blade device 4C of the folding cylinder 24 with saw blade meets the holding device 5 of the holding cylinder 23 as shown in FIG. It is assembled so that it can be switched from Q1 to a position Q2 that is rotated by a certain angle in the rotational direction of the folding cylinder 24 with a saw blade.
[0025]
On the other hand, below the folding cylinder 24 with a saw blade, the continuous paper W at the time of starting guided by the needle device 1 along the outer peripheral surface of the folding cylinder 24 with a saw blade is cut, and the holding device of the holding cylinder 23 is cut. A waste paper discharge conveyor (defective paper discharge means) 29 is provided for receiving the cut paper S0 falling from the folding cylinder 24 with a saw blade without being pushed into the machine 5 and discharging it to the outside of the apparatus. In the second embodiment, the cam 25 of the folding blade insertion / removal mechanism 71 is a mechanism that rotates the outer peripheral surface of the support member 53. Other application examples of this mechanism are described in the first embodiment. Is the same.
[0026]
Next, the operation of the defective paper discharge device of this embodiment will be described.
First, when an operation panel (not shown) automatically switches a defective paper discharge switching switch to start a paper threading operation, the air cylinder 27 of the folding blade loading / unloading position switching means 72 of the folding cylinder 24 with a saw blade moves the cam of the folding blade loading / unloading mechanism 71 25 is rotated in the direction of rotation of the folding cylinder 24 with a saw blade so that the folding blade comes out at the position of Q2 as shown in FIG. 7B.
In this state, when the continuous paper W fed into the folding machine through the printing unit enters between the folding cylinder 24 with the saw blade and the holding cylinder 23, the saw blade device 2 and the holding cylinder of the folding cylinder 24 with the saw blade. When the saw blade receiver 3 of 23 meets, the needle of the needle device 1 of the folding cylinder 24 with the saw blade comes out and pierces the front edge of the continuous paper W. The continuous paper W is transferred along the outer peripheral surface of the cylinder 24 by the needle of the folding cylinder 24 with a saw blade. Even when the folding cylinder 24 with a saw blade rotates and moves to a predetermined angle and the folding blade device 4C of this cylinder 24 and the holding device 5 of the holding cylinder 23 meet each other, as shown in FIG. The folding blade of the folding cylinder 24 is in a retracted state. For this reason, the continuous paper W is guided along the outer peripheral surface of the folding cylinder 24 with a saw blade without being folded and cut to a predetermined size by the next saw blade device 2 and the saw blade receiver 3. Therefore, the cut paper S0 formed on the outer peripheral surface of the folding cylinder 24 with the saw blade falls onto the rotating waste paper discharge conveyor 29 and is placed on the conveyor 29 as shown in FIG. It is automatically discharged outside the machine.
[0027]
After that, whether the tension of the continuous paper W sent to the parallel folding unit 20 of the folding machine through the printing unit is gradually stabilized, the trimmed paper S0 on the waste paper discharge conveyor 29 is aligned, and whether or not printing is possible. If it is ready to print, press the start button. Then, when the speed of the rotary press is gradually accelerated and reaches the speed set in the acceleration stage, a signal for “cutting out” the waste paper is automatically transmitted. In response to this signal, the air cylinder 27 of the folding blade loading / unloading position switching means 72 is actuated to rotate and move the cam 25 of the folding blade loading / unloading mechanism 71, and the position where the folding blade of the folding cylinder 24 with the saw blade is ejected is determined when the waste paper is discharged. Switch from the position to the reference position during printing.
Accordingly, the continuous paper W that has been transferred along the outer peripheral surface of the folding cylinder 24 with the saw blade is continuously aligned with the timing at which the folding blade device 4C of the folding cylinder 24 with the saw blade and the holding device 5 of the holding cylinder 23 meet. The needle of the needle device 1 that has pierced the front edge of the paper W comes out, and the folding blade inserts the central portion of the cutting length into the holding device 5 of the holding cylinder 23.
[0028]
Next, the continuous paper W is cut into a predetermined size by the saw blade device 2 of the folding cylinder 24 with a saw blade and the saw blade receiver 3 of the holding cylinder 23, and a signature S1 is formed by folding the cut paper S0 in half. At this time, since the posture and shape of the continuous paper W immediately before folding are good, there is no occurrence of wrinkles or paper jams, and the signature S1 with high folding accuracy is formed. Moreover, since the speed of the rotary press is gradually increasing at this point, the inertial force of the signature S1 that is discharged from the gripper cylinder 23 and sandwiched between the pair of upper and lower conveying belts 7a and 7b is also conveyed. It is getting bigger.
[0029]
As described above, in the folding machine according to the second embodiment of the present invention, the cam 25 of the folding blade loading / unloading mechanism 71 and the folding blade loading / unloading position switching means 72 are added to the folding cylinder 24 with a saw blade of the two-fold parallel folding section 20. Is provided so that the position at which the folding blade comes out can be switched between starting and printing. Further, a broken paper discharge conveyor 29 for discharging the irregularly cut paper S0 formed at the time of starting is provided below the folding cylinder 24 with a saw blade, so that it is the same as in the case of the first embodiment. An effect is obtained.
[0030]
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made without departing from the scope of the present invention. is there. For example, in the above-described embodiment, the paper threading operation is started by pressing a push button, but the discharge direction is automatically switched and the printing operation is continuously performed by detecting the tension of the rotary press ( It may be performed sequentially.
[0031]
【The invention's effect】
As described above, the faulty paper discharge device for a folding machine according to the present invention is a rotary machine folding machine having a parallel folding portion constituted by a plurality of cylinders, wherein the continuous paper is cut between both of the cylinders. A first cylinder and a second cylinder are provided adjacent to each other, and each of the first cylinder and the second cylinder is provided with a needle device having a needle insertion / removal mechanism for transferring the continuous paper to be cut along the outer peripheral surface. The first Trunk And a needle insertion / removal position switching means capable of switching the insertion / removal position of each needle to the needle position of the second body. When the defective paper is discharged, the needle loading / unloading mechanism of the first cylinder is operated by the needle loading / unloading position switching means to pull out the needle of the needle device at the needle loading / unloading position, and the needle loading / unloading position of the second cylinder is switched. The needle insertion / removal mechanism is operated by means to retract the needle of the needle device at the needle insertion / removal position, and the continuous paper passing between the first cylinder and the second cylinder is moved by the needle of the needle apparatus of the first cylinder. It is configured to cut along the outer circumference of one cylinder. This eliminates paper jams at start-up, eliminates the need to remove paper jams, saves labor and time required to handle defective paper, and improves productivity and machine durability. be able to.
The defective paper discharge device for a folding machine according to the present invention may be a third cylinder for cutting continuous paper among the cylinders in a folding machine of a rotary press having a parallel folding portion constituted by a plurality of cylinders. A needle device is provided for transferring the continuous paper to be cut along the outer peripheral surface, and the third cylinder is provided with the needle device. A folding blade device having a folding blade loading / unloading mechanism is provided, and a folding blade loading / unloading position switching means capable of switching a folding blade loading / unloading position is provided in the folding blade device. When the defective paper is discharged, the folding blade loading / unloading mechanism is operated by the folding blade loading / unloading position switching means of the third cylinder, and the folding blade of the folding blade device is retracted at the folding blade loading / unloading position. The paper is cut along the outer peripheral surface of the third drum by the needle of the needle device. Therefore, the same effect as the above invention can be obtained.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram showing an outline of a folding machine to which a defective paper discharge device according to a first embodiment of the present invention is applied.
FIG. 2 is a side view showing a partial cross section of the main part of the saw cylinder in the folding machine according to the first embodiment of the present invention.
FIG. 3 is a side view showing a partial cross section of a main part of a folding cylinder in the folding machine according to the first embodiment of the present invention.
FIGS. 4A to 4C are conceptual diagrams for explaining a defective paper discharge procedure when the folding machine according to the first embodiment of the present invention is started.
FIG. 5 is a conceptual diagram showing an outline of a folding machine to which a defective paper discharge device according to a second embodiment of the present invention is applied.
FIG. 6 is a side view showing a partial cross section of a main part of a folding cylinder with a saw blade in a folding machine according to a second embodiment of the present invention.
FIGS. 7A to 7C are conceptual diagrams for explaining a defective paper discharge procedure at the time of starting the folding machine according to the second embodiment of the present invention.
FIG. 8 is a conceptual diagram showing an outline of a conventional folding machine having a three-body type parallel folding section.
FIG. 9 is a conceptual diagram showing an outline of a conventional folding machine having a two-body type parallel folding section.
[Explanation of symbols]
1,1A, 1B Needle device
2 Saw blade device
3 Saw blade holder
4,4C folding blade device
5 Mouth device
6 Right angle folding device
7a, 7b Conveyor belt
8A, 8B impeller
9 Paper delivery conveyor
10,20 Parallel fold
11 Saw cylinder (first cylinder)
12 Folding body (2nd body)
13, 23
14a, 14b arm
15a, 15b cam
16a, 16b Cam follower
17a, 17b Air cylinder
18a, 18b Needle shaft
19, 29 Waste paper discharge conveyor (defective paper discharge means)
24 Folding cylinder with saw blade (third cylinder)
25 cams
26 Cam Follower
27 Air cylinder
28 Blade shaft
50 frames
51, 52, 53 Support member
61A, 61B Needle insertion / removal mechanism
62A, 62B Needle entry / exit position switching means
64a, 64b piston rod
65a, 65b Actuating member
71 Folding blade insertion / removal mechanism
72 Folding blade insertion / removal position switching means
W Continuous paper
S0 cutting paper
S1, S2 signature

Claims

複数の胴によって構成される平行折り部を有する輪転機の折機において、前記胴のうち、両者間で連続紙を断裁する第１胴および第２胴を隣接して設け、前記第１胴および第２胴のそれぞれに、断裁される連続紙を外周面に沿って移送するための針出し入れ機構を備えた針装置を設けると共に、前記第１胴および第２胴の針位置にそれぞれの針の出し入れ位置を切り替えることが可能な針出し入れ位置切り替え手段を設け、不良紙排出時、前記第１胴の前記針出し入れ位置切り替え手段により前記針出し入れ機構を作動させて針の出し入れ位置で前記針装置の針を出すと共に、前記第２胴の前記針出し入れ位置切り替え手段により前記針出し入れ機構を作動させて針の出し入れ位置で前記針装置の針を引っ込め、前記第１胴および第２胴間を通る連続紙を前記第１胴の前記針装置の針により前記第１胴の外周面に沿って移送して断裁するように構成したことを特徴とする折機の不良紙排出装置。In the rotary machine of the rotary press having a parallel folding part constituted by a plurality of cylinders, a first cylinder and a second cylinder for cutting continuous paper between the cylinders are provided adjacent to each other, and the first cylinder and Each of the second cylinders is provided with a needle device having a needle insertion / removal mechanism for transferring the continuous paper to be cut along the outer peripheral surface, and each needle is provided at the needle position of the first cylinder and the second cylinder. A needle loading / unloading position switching means capable of switching the loading / unloading position is provided , and when the defective paper is discharged, the needle loading / unloading mechanism is operated by the needle loading / unloading position switching means of the first cylinder so that the needle device is in the needle loading / unloading position. The needle is withdrawn and the needle loading / unloading mechanism is operated by the needle loading / unloading position switching means of the second cylinder to retract the needle of the needle device at the needle loading / unloading position. Defective sheet discharge device for a folding machine of the continuous sheet, characterized by being configured so as to cut and transported along the outer peripheral surface of the first cylinder by the needle of the needle device of the first cylinder that.

上記第１胴の下方には、該第１胴の針装置の針が引っ込んだ後、上記第１胴の外周面から落下してくる断裁紙を受けて機外に排出する不良紙排出手段が配設されていることを特徴とする請求項１に記載の折機の不良紙排出装置。Below the first cylinder, there is a defective paper discharging means for receiving the cut paper falling from the outer peripheral surface of the first cylinder after the needle of the needle device of the first cylinder is retracted and discharging it to the outside of the machine. The defective paper discharge device for a folding machine according to claim 1, wherein the paper is discharged.

複数の胴によって構成される平行折り部を有する輪転機の折機において、前記胴のうち、連続紙を断裁する第３胴に断裁される連続紙を外周面に沿って移送するための針装置を設け、かつ前記第３胴に折りブレード出し入れ機構を備えた折りブレード装置を設けると共に、該折りブレード装置に折りブレードの出し入れ位置を切り替えることが可能な折りブレード出し入れ位置切り替え手段を設け、不良紙排出時、前記第３胴の前記折りブレード出し入れ位置切り替え手段により前記折りブレード出し入れ機構を作動させて折りブレード出し入れ位置で前記折りブレード装置の折りブレードを引っ込め、前記第３胴を通る連続紙を前記針装置の針により前記第３胴の外周面に沿って移送して断裁するように構成したことを特徴とする折機の不良紙排出装置。 Needle device for transferring continuous paper cut to a third cylinder for cutting continuous paper among the cylinders along an outer peripheral surface in a folding machine of a rotary press having a parallel folding portion constituted by a plurality of cylinders. the provided, and said together with the third providing folding blade device with a folding blade out mechanism to the body, providing a folding blade out position switching means capable of switching the out position of the folding blade in該折Ri blade device, defective paper At the time of discharge, the folding blade loading / unloading mechanism is operated by the folding blade loading / unloading position switching means of the third cylinder to retract the folding blade of the folding blade device at the folding blade loading / unloading position, and the continuous paper passing through the third cylinder is folding machine, characterized by being configured to transfer to be cut along the outer peripheral surface of the third cylinder by a needle of the needle device not Paper discharge device.

上記第３胴の下方には、該第３胴の針装置の針が引っ込んだ後、上記第３胴の外周面から落下してくる断裁紙を受けて機外に排出する不良紙排出手段が配設されていることを特徴とする請求項３に記載の折機の不良紙排出装置。Below the third cylinder, there is a defective paper discharge means for receiving the cut paper falling from the outer peripheral surface of the third cylinder and discharging it to the outside after the needle of the needle device of the third cylinder is retracted. The defective paper discharge device for a folding machine according to claim 3, wherein the defective paper discharge device is provided.