JP3652885B2

JP3652885B2 - Rotary press folding machine

Info

Publication number: JP3652885B2
Application number: JP16360898A
Authority: JP
Inventors: 和利能見
Original assignee: Mitsubishi Heavy Industries Ltd
Current assignee: Mitsubishi Heavy Industries Ltd
Priority date: 1998-06-11
Filing date: 1998-06-11
Publication date: 2005-05-25
Anticipated expiration: 2018-06-11
Also published as: JPH11349217A

Description

【０００１】
【発明の属する技術分野】
この発明は、輪転機の折機に関するものである。
【０００２】
【従来の技術】
従来より、新聞の折り込みチラシや雑誌の口絵などの部数の多い商業印刷物は、短納期化と高品質化に対応するため、大部分がオフセット輪転機で印刷されている。これらの印刷物には、一般的にＢ列系の用紙を用い、チラシ印刷の場合、輪転機の折機から２つ折りにした折り丁、即ちＢ４判４ページの折り丁が排出され、雑誌の口絵等の印刷の場合、更に半分に折り畳んで４つ折りにした折り丁、即ちＢ５判８ページの折り丁が排出される。
図７及び図８は、この種の印刷に従来から用いられている、最も標準的なＢ縦半裁の商業用オフセット輪転機の折機を示す斜視図である。
【０００３】
これらの輪転機の折機では、図示しない印刷部で印刷された全幅の連続紙Ｗが、折機の入り口に配設されたスリッタ２によって紙の流れ方向に沿って紙幅の中央で半分に縦切りされ、こののち、半幅になった連続紙Ｗａ，Ｗｂは、それぞれ矢印方向に進み、２列になって折機の断裁・折り畳み部に入って行く。
図７に示す折機の断裁・折り畳み部は、鋸胴３１と折胴３２とくわえ胴３３より構成された公知の３胴形式のものである。また、図８に示す折機の断裁・折り畳み部は、鋸刃付き折胴４２とくわえ胴４３より構成された公知の２胴形式のものである。これらの断裁・折り畳み部の各胴の面長は、いずれも倍幅になっていて、同一面上を２列に並んで入ってきた半幅の連続紙Ｗａ，Ｗｂが同時に鋸胴３１と折胴３２間又は鋸刃付き折胴４２とくわえ胴４３間で所定寸法、即ちＢ３判の長さに切断され、次いで折胴３２とくわえ胴３３間又は鋸刃付き折胴４２とくわえ胴４３間で、この断裁線に平行に半分に折り畳まれて、Ｂ４判４ページの大きさに２つ折りされる。この２つ折りされた各折り丁Ｓａ，Ｓｂはそれぞれ１部づつ一定のピッチで搬送され、羽根車３７を経て排紙コンベヤ３８から２列になって機外に排出される。
【０００４】
【発明が解決しようとする課題】
以上説明したように、従来の商業用輪転機の折機は、各胴の面長が倍幅になっていて、断裁・折り畳み部で形成された折り丁Ｓａ，Ｓｂが１部づつ２列になって排紙コンベヤ３８から排出されるようになっているため、次のような問題点があった。
(1) 折機のフレーム間隔が広く、各胴及びローラ類の面長が長いため、機械の保守・点検に困難な部分があるほか、機械剛性を更に高めることが困難であり、輪転機の更なる高速化が望めなかった。
(2) 折り丁Ｓａ，Ｓｂは、排紙コンベヤから２列になって機外に排出されるため、スタッカや包装・結束機などの後処理機器が２系列分必要となり、輪転機を含む総合的設備投資費が嵩むとともに、広い設置スペースが必要であった。
(3) 断裁・折り畳み部で形成された２つ折りの折り丁Ｓａ，Ｓｂは、１部づつ搬送されるため、軽量紙に対しては高速になるほど排紙の乱れが生じ易く、運転速度を抑えざるを得なかった。
【０００５】
したがって本発明は、以上のような問題点を解決し、半幅の折機によって折り丁の１列排出を可能にし、経済的で作業性がよく、しかも省スペース化と高速化に対応できる輪転機の折機を提供することを目的とする。
【０００６】
【課題を解決するための手段】
上記目的を達成するため、本発明に係る輪転機の折機は、連続紙の幅方向の中央を走行方向に沿って縦切りし、２分された半幅の連続紙を所定の長さに切断し、その断裁線に平行に半分に折り畳んで折り丁を排出する輪転機の折機において、上記半幅の連続紙に対応する大きさの断裁・折り畳み手段を上下段に２組配設するとともに、これらの２組の断裁・折り畳み手段の間に折り丁重ね手段を設けてなり、上記断裁・折り畳み手段によって折り丁を形成し、該折り丁を上記折り丁重ね手段によって重ね合わせて送り出すように構成している。
上記断裁・折り畳み手段は、例えば、鋸胴と折胴とくわえ胴とを含む３胴式のものを採用することができ、一方、鋸付き折胴とくわえ胴とを含む２胴式の断裁・折り畳み手段を採用することもできる。２胴式の断裁・折り畳手段を採用する場合は、鋸胴が不要となるので、コンパクトな構造となる。
上記折り丁重ね手段は、上下段の断裁・折り畳み手段から排出されてくる２つの折り丁を重ね合わせて排出するためのものである。折り丁重ね手段は、受け渡し胴と紙案内装置とから構成することができる。受け渡し胴は、上段のくわえ胴と下段のくわえ胴とに隣接して配設され、これらのくわえ胴と同径及び同速度で回転することが好適である。紙案内装置は、上下段の各くわえ胴から送り出されてくる２つの折り丁が受け渡し胴の外周面で重なるように構成することが好適である。
【０００７】
また、本発明に係る輪転機の折機は、上記折り丁重ね手段が受け渡し胴と紙案内装置とを備え、該受け渡し胴は、上記断裁・折り畳み手段の各胴と等速で回転駆動され、上記紙案内装置は、上下段の断裁・折り畳み手段で形成されたそれぞれの折り丁を上記受け渡し胴の外周面上で重なるように挟持して搬送し、排紙手段の搬送ベルトに受け渡すように構成している。
上記排紙手段は、折り丁重ね手段から排出されてくる重なり合った折り丁を搬送し、機外に排出するものである。この排紙手段は、受け渡し胴から排出されてくる重ねられた折り丁を搬送する上下の搬送ベルト、羽根車及び排紙コンベヤを備えていることが好適である。
本発明に係る輪転機の折機は、上述したように、半幅の連続紙１列分に対応する大きさになっており、半幅の連続紙２列分に対応する大きさの従来の折機に比べ、フレーム間隔が狭く、各胴およびローラ類の面長が短いため、機械剛性が高くなり、輪転機の安定した高速運転が可能となるほか、機械の保守や点検が容易になる。
また、本発明に係る折機は、折り丁が２部づつ重なった状態で１列になって排出されるので、折丁が１部づつ２列になって排出される従来の折機に比べ、スタッカーや包装・結束機などの後処理機器が１系列分で済み、折機及び後処理機器の設置スペース、ランニングコストや総合的設備投資費を少なくすることができる。
さらに、本発明に係る折機は、折り丁が２部づつ重ねた状態で搬送されるので、軽量紙の印刷時にも排紙の乱れが無く、高速運転が可能になる。
【０００８】
【発明の実施の形態】
以下、本発明の実施の形態について図面を用いて詳細に説明する。
第１の実施の形態
図１〜図３は、本発明の第１実施形態に係る輪転機の折機を示している。該折機は、Ｂ縦半裁の商業用オフセット輪転機に適用したものであり、図１に示すように、上下段の断裁・折り畳み手段１０ａ，１０ｂと、折り丁重ね手段３と、排紙手段４とを備えている。また、印刷されたのち折機に送られてくる全幅の連続紙Ｗは、ドラグローラ１によって折機に引き込まれ、ドラグローラ１の中央で半分の幅にスリッタ２で走行方向に沿って縦切りされ、半幅の連続紙であるＷａ，Ｗｂに分割される。次いで、この半幅の連続紙Ｗａ，Ｗｂは、反転ローラ６０，６１及び複数のローラ群６２を経て、以下に説明する断裁・折り畳み手段１０ａ，１０ｂに送られる。
【０００９】
この断裁・折り畳み手段１０ａ，１０ｂは、半幅の連続紙Ｗａ，Ｗｂをそれぞれ版胴の周長で切断し、この断裁線に平行に半分に折り畳んで２つ折りの折り丁Ｓａ，Ｓｂを形成するものであり、それぞれ鋸胴１１ａ，１１ｂと折胴１２ａ，１２ｂとくわえ胴１３ａ，１３ｂよりなる公知の３胴形式である。
図２に示すように、各鋸胴１１ａ，１１ｂには、スリッタ２によって縦切りされた半幅の連続紙Ｗａ，Ｗｂを、走行方向に対して略直角にそれぞれ所定長さ分ずつ切断するための１組の鋸刃５を設け、各折胴１２ａ，１２ｂには、上記鋸刃５を受けるための鋸刃受け６と、鋸刃５によって切断される断裁紙の回転方向前縁部を引っかけるためのカム機構を備えた針装置７と、この断裁紙の回転方向２等分位置に突き出て、この断裁紙を半分に折り込むためのカム機構を備えた折りブレード装置８をそれぞれ２組ずつ設けている。そして、各くわえ胴１３ａ，１３ｂには、折胴１２ａ，１２ｂの折りブレード装置８によって突き出された断裁紙の折り線部をくわえるためのカム機構を備えた２組のくわえ装置９を設けている。
【００１０】
折り丁重ね手段３は、上下段の断裁・折り畳み手段１０ａ，１０ｂから排出されてくる折り丁Ｓａ，Ｓｂを重ね合わせて排出するものである。この折り丁重ね手段３は、受け渡し胴１４と紙案内装置１９とから構成されている。図３に示すように、該受け渡し胴１４は、上段のくわえ胴１３ａと下段のくわえ胴１３ｂに相接する位置に配設されており、これらのくわえ胴１３ａ，１３ｂの胴径と同一（等径）で、かつ等速で回転駆動されるように構成されており、上記紙案内装置１９は、上下段の各くわえ胴１３ａ，１３ｂから送りだされてくる折り丁Ｓａ，Ｓｂが受け渡し胴１４の外周面上で重なるように導入するために配設されている。この紙案内装置１９は、受け渡し胴１４の外周面に接触して排紙手段４への折り丁Ｓａ，Ｓｂの搬送を兼ねる上部搬送ベルト１５ａと、上段のくわえ胴１３ａの外周面と上部搬送ベルト１５ａの外周面に接触する上部紙案内ベルト１６ａと、下段のくわえ胴１３ｂの外周面と上段搬送ベルト１５ａの外周面に接触する下部紙案内ベルト１６ｂと、下部紙案内ベルト１６ｂの外周面に接触する中部紙案内ベルト１６ｃとから構成されている。
【００１１】
また、排紙手段４は、折り丁重ね手段３から排出されてくる重なり合った折り丁Ｓａ，Ｓｂを搬送し、機外に排出するものである。この排紙手段４は、受け渡し胴１４から排出されてくる重ねられた折り丁Ｓａ，Ｓｂを搬送する上下の搬送ベルト１５ａ，１５ｂと、公知の羽根車１７と排紙コンベヤ１８より構成されている。
さらに、第１実施形態に係る折機には、図２に示すように、上記搬送ベルト１５ａ，１５ｂによって搬送されてくる重ねられた２つ折りの折り丁Ｓａ，Ｓｂを、その断裁線に対して直角方向に半分に折り畳む公知の直角折り装置５０を設けている。なお、図１においては、分かり易くするために、上段搬送コンベヤ１５ａは省略してある。
【００１２】
上記構成を有する第１実施形態に係る輪転機の折機の作用を以下に示す。
第１実施形態に係る折機を用い、重ね出し、即ちＢ４判４ページの大きさに２つ折りされた折り丁Ｓａ，Ｓｂを２部づつ重ねて排出する場合について説明する。まず、図１に示すように、折機に送られてくる全幅の連続紙Ｗをドラグローラ１とスリッタ２の間に通して紙幅の中央位置で半幅に縦切りする。次に、図２に示すように、２分された片方の連続紙Ｗａを上段の鋸胴１１ａと折胴１２ａの間に通し、他方の連続紙Ｗｂを下段の鋸胴１１ｂと折胴１２ｂの間に通す紙通しを行う。
この状態に紙通しを行った後、輪転機を起動すると、印刷され２分されて送られてくる半幅の連続紙Ｗａ，Ｗｂは、それぞれ、鋸胴１１ａ，１１ｂの鋸刃５と折胴１２ａ，１２ｂの鋸刃受け６によって所定の長さ、即ちＢ３判の長さに切断され、折胴１２ａ，１２ｂの折りブレード装置８とくわえ胴１３ａ，１３ｂのくわえ装置９とによって２つ折りの折り丁、即ちＢ４判４頁の折り丁Ｓａ，Ｓｂが形成される。
【００１３】
上段の折胴１２ａとくわえ胴１３ａの間で形成された２つ折りの折り丁Ｓａは、くわえ装置９に折り線部がくわえられて、くわえ胴１３ａの外周に沿って所定角度まで回転移動し、くわえ装置９から解放される。くわえ装置９から解放された折り丁Ｓａは、図３に示すごとく、上部紙案内ベルト１６ａと上部搬送ベルト１５ａの間に挟持されて受け渡し胴１４の外周に沿って搬送される。
一方、下段の折胴１２ｂとくわえ胴１３ｂの間で形成された２つ折りの折り丁Ｓｂは、くわえ装置９に折り線部がくわえられて、くわえ胴１３ｂの外周に沿って所定角度まで回転移動し、くわえ装置９から解放される。くわえ装置９から解放された折り丁Ｓｂは、図３に示すごとく、下部紙案内ベルト１６ｂと中部紙案内ベルト１６ｃの間に挟持されてくわえ胴１３ｂの外周に沿って搬送される。
【００１４】
ここで、受け渡し胴１４と下段のくわえ胴１３ｂが接する位置の直前で上部紙案内ベルト１６ａによる拘束状態から解放される折り丁Ｓａの先端は、中部紙案内ベルト１６ｃによる拘束状態から解放される折り丁Ｓｂの先端と一致するように構成されているので、それぞれの紙案内ベルト１６ａ，１６ｃから解放された折り丁Ｓａ，Ｓｂは、それぞれの先端が揃った状態で重なり合って、上部搬送ベルト１５ａと下部紙案内ベルト１６ｂの間に挟持される。２部づつ重ね合わされた折り丁ＳａとＳｂは、この状態で一定距離搬送された後、下部紙案内ベルト１６ｂに接続している下部搬送ベルト１５ｂと上部搬送ベルト１５ａの間に挟持され、一定のピッチで搬送されて、羽根車１７を経て排紙コンベヤ１８によって機外に排出される。
【００１５】
なお、上下搬送ベルト１５ａ，１５ｂの搬送経路に設けられた直角折り装置５０を用いれば、この上下の搬送ベルト１５ａ，１５ｂの間に挟持されて搬送されてくる２部づつ重ねられた２つ折りの折り丁Ｓａ，Ｓｂは、重なり合ったまま断裁線に対して直角方向に半分に折り畳まれ、Ｂ５判８ページに４つ折りされた折り丁を２部づつ重ねた状態で排出することができる。
【００１６】
第２の実施の形態
次いで、第２の実施の形態に係る輪転機の折機について、図４〜図６を用いて説明する。第１実施形態における断裁・折り畳み手段１０ａ，１０ｂは、図４に示すように、鋸胴１１ａ，１１ｂと、折胴１２ａ，１２ｂと、くわえ胴１３ａ，１３ｂからなる３胴方式であるのに対し、第２実施形態における断裁・折り畳み手段２０ａ，２０ｂは、鋸刃付き折胴２２ａ，２２ｂとくわえ胴２３ａ，２３ｂから構成される公知の２胴方式である。図５に示すように、この鋸刃付き折胴２２ａ，２２ｂには鋸刃５と針装置７と折りブレード装置８をそれぞれ２組づつ設けており、くわえ胴２３ａ，２３ｂには、鋸刃受け６とくわえ装置９をそれぞれ２組づつ設けている。
さらに、第２本実施形態における折り丁重ね手段の紙案内装置２９は、受け渡し胴１４の外周面に接触して排紙手段への折り丁の搬送を兼ねる下部搬送ベルト２５ｂと、上段のくわえ胴２３ａの外周面と下部搬送ベルト２５ｂの外周面に接触する上部紙案内ベルト２６ａと、下段のくわえ胴２３ｂの外周面と下部搬送ベルト２５ｂの外周面に接触する下部紙案内ベルト２６ｂと、上部紙案内ベルト２６ａの外周面に接触する中部紙案内ベルト２６ｃとから構成されている。なお、図４においては、分かり易くするため、上段搬送コンベヤ２５ａを省略してある。
その他の構成は、第１実施形態における折機と同一であるため、説明を省略する。
【００１７】
上記構成を有する第２実施形態に係る輪転機の折機の作用を以下に説明する。第２実施形態における折機を用いて重ね出し、即ちＢ４判４ページの大きさに２つ折りされた折り丁Ｓａ，Ｓｂを２部づつ重ねて排出する場合について説明する。図４及び図５に示すように、先ず印刷されて折機に送られてくる全幅の連続紙Ｗをスリッタ２によって紙幅の中央位置で半幅に縦切りしてＷａ，Ｗｂに２分する。このうち、片方の連続紙Ｗａを上段の鋸刃付き折胴２２ａとくわえ胴２３ａの間に通し、他方の連続紙Ｗｂを下段の鋸刃付き折胴２２ｂとくわえ胴２３ｂの間に通して紙通しを行う。
この紙通しの後、輪転機を起動すると、連続紙Ｗａ，Ｗｂは、それぞれ鋸刃付き折胴２２ａ，２２ｂの鋸刃５とくわえ胴２３ａ，２３ｂの鋸刃受け６によって所定の長さ、即ちＢ３判の長さに走行方向に対して略直角に切断される。この切断後、鋸刃付き折り胴２２ａ，２２ｂの折りブレード装置８とくわえ胴２３ａ，２３ｂのくわえ装置９によって２つ折りの折り丁、即ちＢ４判４ページの折り丁Ｓａ，Ｓｂが形成される。
上段の鋸刃付き折胴２２ａとくわえ胴２３ａの間で形成された２つ折りの折り丁Ｓａは、くわえ装置９に折り線部がくわえられて、くわえ胴２３ａの外周に沿って所定角度まで回転移動する。次いで、中部紙案内ベルト２６ｃとの間に挟持されて受け渡し胴１４と接する位置へ向けてくわえ胴２３ａの外周に沿って搬送され、この間に、折り丁Ｓａはくわえ装置９から解放される。
【００１８】
一方、下段の鋸刃付き折胴２２ｂとくわえ胴２３ｂの間で形成された２つ折りの折り丁Ｓｂは、くわえ装置９に折り線部がくわえられて、くわえ胴２３ｂの外周に沿って所定角度まで回転移動し、くわえ装置９から解放される。くわえ装置９から解放された折り丁Ｓｂは、下部紙案内ベルト２６ｂと下部搬送ベルト２５ｂの間に挟持されて受け渡し胴１４の外周に沿って搬送される。
ここで、受け渡し胴１４と上段のくわえ胴２３ａが接する位置の直前で中部紙案内ベルト２６ｃによる拘束状態から解放される折り丁Ｓａの先端は、下部紙案内ベルト２６ｂによる拘束状態から解放される折り丁Ｓｂの先端と一致するように構成されているので、それぞれの紙案内ベルト２６ｂ，２６ｃから解放された折り丁Ｓａ，Ｓｂは、それぞれの先端が揃った状態で重なり合って、上部紙案内ベルト２６ａと下部搬送ベルト２５ｂの間に挟持される。２部づつ重ね合わされた折り丁Ｓａ，Ｓｂは、この状態で一定距離搬送された後、上部紙案内ベルト２６ａに接続している上部搬送ベルト２５ａと下部搬送ベルト２５ｂの間に挟持され、一定のピッチで羽根車１７に向けて搬送される。これ以降の動きは第１実施形態の場合と同じである。
第２実施形態に係る折機は、上述したように、断裁・折り畳み手段２０ａ，２０ｂが鋸刃付き折胴２２ａ，２２ｂとくわえ胴２３ａ，２３ｂとからなる２胴方式になっているため、第１実施形態に係る折機に比較して、鋸胴１１ａ，１１ｂが不要となるので、第１実施形態における折機と同じ機能がコンパクトな構造で得られる。
【００１９】
【発明の効果】
以上に述べたごとく、本発明に係る輪転機の折機は、半幅の連続紙に対応する大きさの断裁・折り畳み手段を上下段に２組設け、それぞれの断裁・折り畳み手段によって形成された２つ折りの折り丁を共通の受け渡し胴を介して重ね合わせて排出する構造になっているので、半幅の折機によって折り丁の１列排出を可能にし、経済的で作業性がよく、省スペース化と高速化に対応することができる。
【図面の簡単な説明】
【図１】本発明の第１実施形態に係る輪転機の折機全体を示す斜視図である。
【図２】図１の主要部を示す側面図である。
【図３】第１実施形態に係る折機の受け渡し胴で折り丁が重ねられる状態を示す概略図である。
【図４】本発明の第２実施形態に係る輪転機の折機全体を示す斜視図である。
【図５】図４の主要部を示す側面図である。
【図６】第２実施形態に係る折機の受け渡し胴で折り丁が重ねられる状態を示す概略図である。
【図７】従来の商業用オフセット輪転機の折機を示す斜視図である。
【図８】従来の商業用オフセット輪転機の折機を示す斜視図である。
【符号の説明】
１ドラグローラ
２スリッタ
３折り丁重ね手段
４排紙手段
５鋸刃
６鋸刃受け
７針装置
８折りブレード装置
９くわえ装置
１０ａ，１０ｂ，２０ａ，２０ｂ断裁・折り畳み手段
１１ａ，１１ｂ鋸胴
１２ａ，１２ｂ，２２ａ，２２ｂ折胴
１３ａ，１３ｂ，２３ａ，２３ｂくわえ胴
１４受け渡し胴
１５ａ，２５ａ上部搬送ベルト
１５ｂ，２５ｂ下部搬送ベルト
１６ａ，２６ａ上部紙案内ベルト
１６ｂ，２６ｂ下部紙案内ベルト
１６ｃ，２６ｃ中部紙案内ベルト
１７羽根車
１８排紙コンベヤ
１９，２９紙案内装置
５０直角折り装置
６０，６１反転ローラ
６２ローラ群
Ｗ全幅の連続紙
Ｗａ，Ｗｂ半幅の連続紙
Ｓａ，Ｓｂ折り丁[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotary machine of a rotary press.
[0002]
[Prior art]
Conventionally, most commercial prints such as newspaper leaflets and magazine cutouts have been printed mostly on web offset presses in order to meet short delivery times and high quality. These printed materials generally use B row paper, and in the case of flyer printing, a folded bi-fold signature, that is, a B4 size 4-page signature, is ejected, and the magazine's mouthpiece. In the case of printing, etc., a signature that is further folded in half and folded into four, that is, a B5 size 8-page signature is discharged.
FIGS. 7 and 8 are perspective views showing the most standard B-rotary commercial web offset presses conventionally used for this type of printing.
[0003]
In these rotary presses, the full width continuous paper W printed by a printing section (not shown) is vertically halved at the center of the paper width along the paper flow direction by the slitter 2 disposed at the entrance of the folding machine. The continuous papers Wa and Wb that have been cut and then half-width proceed in the direction of the arrows, respectively, and enter the cutting / folding part of the folding machine in two rows.
The cutting / folding portion of the folding machine shown in FIG. 7 is a known three-cylinder type constituted by a saw cylinder 31, a folding cylinder 32, and a holding cylinder 33. Further, the cutting / folding portion of the folding machine shown in FIG. 8 is a known two-cylinder type constituted by a folding cylinder 42 with a saw blade and a holding cylinder 43. The surface lengths of the cylinders of these cutting / folding parts are both double-width, and the half-width continuous papers Wa and Wb which are entered in two rows on the same surface are simultaneously saw cylinder 31 and folding cylinder. 32 or between the folding cylinder 42 with a saw blade and the holding cylinder 43, and is cut to a predetermined size, that is, a B3 length, and then between the folding cylinder 32 and the holding cylinder 33 or between the folding cylinder 42 with a saw blade and the holding cylinder 43. The sheet is folded in half in parallel to the cutting line and folded in half to a size of 4 pages of B4 size. Each of the folded signatures Sa and Sb is conveyed at a constant pitch one by one, and is discharged from the discharge conveyor 38 through the impeller 37 into two rows.
[0004]
[Problems to be solved by the invention]
As described above, in the conventional commercial rotary press, the surface length of each cylinder is doubled, and the signatures Sa and Sb formed by the cutting / folding portions are arranged in two rows one by one. Since the paper is discharged from the paper discharge conveyor 38, there are the following problems.
(1) Since the frame interval of the folding machine is wide and the surface length of each cylinder and rollers is long, there are some parts that are difficult to maintain and inspect the machine, and it is difficult to further increase the machine rigidity. I could not expect further speedup.
(2) Since the signatures Sa and Sb are ejected out of the machine in two rows from the delivery conveyor, two lines of post-processing equipment such as a stacker, packaging and binding machine are required, and a total including the rotary press The capital investment cost increased and a large installation space was required.
(3) Since the two-fold signatures Sa and Sb formed at the cutting / folding part are conveyed one by one, the paper discharge is more likely to be disturbed at higher speeds for lightweight paper, and the operation speed is reduced. I had to.
[0005]
Accordingly, the present invention solves the above-described problems, enables one-line ejection of signatures by a half-width folding machine, is economical, has good workability, and can cope with space saving and high speed. The purpose is to provide a folding machine.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the rotary machine of the rotary press according to the present invention longitudinally cuts the center of the continuous paper in the width direction along the running direction, and cuts the half-width continuous paper into a predetermined length. In the rotary machine of the rotary press that folds in half parallel to the cutting line and discharges the signature, two sets of cutting and folding means having a size corresponding to the half-width continuous paper are arranged in the upper and lower stages, A signature stacking means is provided between these two sets of cutting / folding means, a signature is formed by the cutting / folding means, and the signature is overlapped by the signature stacking means and sent out. doing.
As the cutting / folding means, for example, a three-cylinder type including a saw cylinder, a folding cylinder and a holding cylinder can be adopted, while a two-cylinder cutting / folding means including a folding cylinder with a saw and a holding cylinder is adopted. Folding means can also be employed. When a two-cylinder cutting / folding means is employed, a saw cylinder is not required, and the structure is compact.
The signature stacking means is for overlapping and discharging two signatures discharged from the upper and lower cutting / folding means. The signature stacking means can be composed of a transfer cylinder and a paper guide device. It is preferable that the transfer cylinder is disposed adjacent to the upper holding cylinder and the lower holding cylinder and rotates at the same diameter and speed as these holding cylinders. The paper guide device is preferably configured such that two signatures fed from the upper and lower holding cylinders overlap each other on the outer peripheral surface of the transfer cylinder.
[0007]
Further, in the rotary machine of the rotary press according to the present invention, the signature stacking means includes a transfer cylinder and a paper guide device, and the transfer cylinder is rotationally driven at a constant speed with each cylinder of the cutting / folding means, The paper guide device conveys the signatures formed by the upper and lower trimming / folding means so as to overlap each other on the outer peripheral surface of the delivery cylinder, and delivers it to the conveyor belt of the paper ejection means. It is composed.
The paper discharge means conveys the overlapping signatures discharged from the signature stacking means and discharges them outside the apparatus. The paper discharge means preferably includes upper and lower conveyor belts, an impeller, and a paper discharge conveyor for conveying the stacked signatures discharged from the transfer cylinder.
As described above, the rotary machine of the rotary press according to the present invention has a size corresponding to one row of half-width continuous paper, and has a size corresponding to two rows of half-width continuous paper. Compared to the above, since the frame interval is narrow and the surface length of each cylinder and rollers is short, the mechanical rigidity becomes high, the rotary press can be stably operated at high speed, and the maintenance and inspection of the machine becomes easy.
In addition, the folding machine according to the present invention is ejected in a row with two copies of the signatures overlapped, so that the folding machine is ejected in two rows of the signatures one by one. In addition, a single line of post-processing equipment such as a stacker, packaging / bundling machine, and the like, installation space for the folding machine and post-processing equipment, running cost, and overall capital investment can be reduced.
Furthermore, since the folding machine according to the present invention is transported in a state in which the signatures are stacked two by two, there is no disturbance of paper discharge even when printing lightweight paper, and high speed operation is possible.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
First embodiment Fig. 1 to Fig. 3 show a folding machine of a rotary press according to a first embodiment of the present invention. The folding machine is applied to a B vertical half-cut commercial offset rotary press, and as shown in FIG. 1, upper and lower cutting / folding means 10a, 10b, signature stacking means 3, and paper discharge means. 4 is provided. Further, the full width continuous paper W sent to the folding machine after being printed is drawn into the folding machine by the drag roller 1, and is longitudinally cut along the running direction by the slitter 2 to a half width at the center of the drag roller 1, The paper is divided into Wa and Wb which are half-width continuous paper. Next, the half-width continuous papers Wa and Wb are sent to the cutting and folding means 10a and 10b described below through the reversing rollers 60 and 61 and the plurality of roller groups 62.
[0009]
This cutting / folding means 10a, 10b cuts half-width continuous papers Wa, Wb along the circumference of the plate cylinder, and folds them in half in parallel to the cutting line to form folded signatures Sa, Sb. These are known three-cylinder types each consisting of saw cylinders 11a, 11b, folding cylinders 12a, 12b, and holding cylinders 13a, 13b.
As shown in FIG. 2, half-width continuous papers Wa and Wb longitudinally cut by the slitter 2 are cut into the respective saw cylinders 11a and 11b by predetermined lengths substantially perpendicular to the running direction. A pair of saw blades 5 are provided, and each folding cylinder 12a, 12b is hooked with a saw blade receiver 6 for receiving the saw blade 5 and a leading edge in the rotational direction of the cut paper cut by the saw blade 5. Two sets of each of the needle device 7 provided with the cam mechanism and the folding blade device 8 provided with a cam mechanism for folding the cut paper in half, protruding in a bisecting position in the rotation direction of the cut paper are provided. Yes. Each of the holding cylinders 13a and 13b is provided with two sets of holding apparatuses 9 each having a cam mechanism for holding the folding line portion of the cut paper protruding by the folding blade apparatus 8 of the folding cylinders 12a and 12b. .
[0010]
The signature stacking means 3 superimposes and discharges the signatures Sa and Sb discharged from the upper and lower cutting / folding means 10a and 10b. The signature stacking means 3 includes a transfer cylinder 14 and a paper guide device 19. As shown in FIG. 3, the transfer cylinder 14 is disposed at a position adjacent to the upper holding cylinder 13a and the lower holding cylinder 13b, and has the same diameter as the holding cylinders 13a and 13b (etc.). The paper guide device 19 is configured such that the signatures Sa and Sb fed from the upper and lower holding cylinders 13a and 13b are transferred to the transfer cylinder 14. It arrange | positions in order to introduce | transduce so that it may overlap on the outer peripheral surface. This paper guiding device 19 is in contact with the outer peripheral surface of the transfer cylinder 14 and is also used for conveying the signatures Sa and Sb to the paper discharge means 4, and the outer peripheral surface of the upper holding cylinder 13a and the upper conveying belt. The upper paper guide belt 16a that contacts the outer peripheral surface of 15a, the lower paper guide belt 16b that contacts the outer peripheral surface of the lower holding cylinder 13b and the outer peripheral surface of the upper transport belt 15a, and the outer peripheral surface of the lower paper guide belt 16b And a middle paper guide belt 16c.
[0011]
The paper discharge means 4 conveys the overlapping signatures Sa and Sb discharged from the signature stacking means 3 and discharges them outside the apparatus. The paper discharge means 4 includes upper and lower transport belts 15a and 15b for transporting the stacked signatures Sa and Sb discharged from the transfer cylinder 14, a known impeller 17 and a paper discharge conveyor 18. .
Furthermore, in the folding machine according to the first embodiment, as shown in FIG. 2, the folded folding signatures Sa and Sb conveyed by the conveying belts 15a and 15b are separated from the cutting line. A known right angle folding device 50 for folding in half in the perpendicular direction is provided. In FIG. 1, the upper transport conveyor 15a is omitted for the sake of clarity.
[0012]
The operation of the rotary press folding machine according to the first embodiment having the above-described configuration will be described below.
A case will be described in which the folding machine according to the first embodiment is used to superimpose, that is, to fold and discharge the signatures Sa and Sb that are folded in two to a size of 4 pages of B4 size. First, as shown in FIG. 1, the full width continuous paper W sent to the folding machine is passed between the drag roller 1 and the slitter 2 and cut into half widths at the center position of the paper width. Next, as shown in FIG. 2, one of the two continuous papers Wa is passed between the upper saw cylinder 11a and the folding cylinder 12a, and the other continuous paper Wb is passed between the lower saw cylinder 11b and the folding cylinder 12b. Do the paper thread through.
When the rotary press is started after the paper is threaded in this state, the half-width continuous papers Wa and Wb which are printed and divided and sent are the saw blade 5 and the folding cylinder 12a of the saw cylinders 11a and 11b, respectively. , 12b is cut into a predetermined length, that is, a length of B3 size, and is folded in half by the folding blade device 8 of the folding cylinders 12a, 12b and the holding device 9 of the holding cylinders 13a, 13b. That is, the four-page B4 size signatures Sa and Sb are formed.
[0013]
The folded signature Sa formed between the upper folding cylinder 12a and the holding cylinder 13a has a folding line portion added to the holding apparatus 9, and rotates to a predetermined angle along the outer periphery of the holding cylinder 13a. It is released from the holding device 9. The signature Sa released from the holding device 9 is sandwiched between the upper paper guide belt 16a and the upper transport belt 15a and transported along the outer periphery of the transfer cylinder 14 as shown in FIG.
On the other hand, the folded signature Sb formed between the lower folding cylinder 12b and the holding cylinder 13b is rotated by a predetermined angle along the outer periphery of the holding cylinder 13b, with the folding line portion being held by the holding apparatus 9. And released from the holding device 9. As shown in FIG. 3, the signature Sb released from the holding device 9 is sandwiched between the lower paper guide belt 16b and the middle paper guide belt 16c and is conveyed along the outer periphery of the holding cylinder 13b.
[0014]
Here, the front end of the signature Sa released from the restrained state by the upper paper guide belt 16a immediately before the position where the transfer drum 14 and the lower holding drum 13b contact each other is folded from the restrained state by the middle paper guide belt 16c. Since it is configured so as to coincide with the leading end of the stake Sb, the signatures Sa and Sb released from the respective paper guide belts 16a and 16c overlap with each other with the leading ends aligned with the upper conveying belt 15a. It is sandwiched between the lower paper guide belts 16b. The signatures Sa and Sb overlapped in two parts are conveyed by a certain distance in this state, and then sandwiched between the lower conveyance belt 15b and the upper conveyance belt 15a connected to the lower paper guide belt 16b, The paper is conveyed at a pitch and is discharged out of the apparatus by a paper discharge conveyor 18 through an impeller 17.
[0015]
In addition, if the right-angle folding device 50 provided in the conveying path of the upper and lower conveying belts 15a and 15b is used, the two-fold folded two-pieces that are sandwiched and conveyed between the upper and lower conveying belts 15a and 15b are stacked. The signatures Sa and Sb are folded in half in a direction perpendicular to the cutting line while being overlapped, and the signatures folded in four on the B5 size 8 pages can be discharged in a state where two copies are overlapped.
[0016]
Second embodiment Next, a rotary machine of a rotary press according to a second embodiment will be described with reference to Figs. The cutting / folding means 10a, 10b in the first embodiment, as shown in FIG. 4, is a three-cylinder system composed of saw cylinders 11a, 11b, folding cylinders 12a, 12b, and holding cylinders 13a, 13b. The cutting / folding means 20a, 20b in the second embodiment is a known two-cylinder system composed of folding cylinders 22a, 22b with saw blades and holding cylinders 23a, 23b. As shown in FIG. 5, the folding blades 22a and 22b with saw blades are provided with two sets of saw blades 5, needle devices 7 and folding blade devices 8, respectively, and the holding drums 23a and 23b have saw blade receivers. 6 and two holding devices 9 are provided.
Further, the paper guiding device 29 of the signature stacking means in the second embodiment includes a lower transport belt 25b that contacts the outer peripheral surface of the transfer cylinder 14 and also serves to transport the signature to the paper discharge means, and an upper holding cylinder. The upper paper guide belt 26a that contacts the outer peripheral surface of the lower conveyance belt 25b, the lower paper guide belt 26b that contacts the outer peripheral surface of the lower holding belt 23b and the outer peripheral surface of the lower conveyance belt 25b, and the upper paper It comprises a middle paper guide belt 26c that contacts the outer peripheral surface of the guide belt 26a. In FIG. 4, the upper transport conveyor 25a is omitted for the sake of clarity.
The other configuration is the same as that of the folding machine in the first embodiment, and thus the description thereof is omitted.
[0017]
The operation of the rotary press folding machine according to the second embodiment having the above configuration will be described below. A case will be described in which the folding is performed by using the folding machine in the second embodiment, that is, the signatures Sa and Sb folded in half to the size of 4 pages of B4 size are overlapped and ejected two by two. As shown in FIGS. 4 and 5, first, the full width continuous paper W that is printed and sent to the folding machine is vertically cut into half widths at the center position of the paper width by the slitter 2, and divided into Wa and Wb. Among these, one continuous paper Wa is passed between the upper folding cylinder 22a with the saw blade and the holding cylinder 23a, and the other continuous paper Wb is passed between the lower folding cylinder 22b with the saw blade and the holding cylinder 23b. Thread through.
When the rotary press is started after the web threading, the continuous papers Wa and Wb have a predetermined length by the saw blade 5 of the folding cylinders 22a and 22b with saw blades and the saw blade receiver 6 of the holding cylinders 23a and 23b, respectively. It is cut at a right angle to the running direction to a B3 size length. After this cutting, the folding blade device 8 of the folding cylinders 22a, 22b with saw blades and the holding device 9 of the holding cylinders 23a, 23b form folded signatures, that is, B4 size 4-page signatures Sa, Sb.
The folded signature Sa formed between the upper folding cylinder 22a with a saw blade and the holding cylinder 23a is rotated by a predetermined angle along the outer periphery of the holding cylinder 23a with the folding line portion being held by the holding apparatus 9. Moving. Next, the paper is sandwiched between the middle paper guide belt 26 c and conveyed along the outer periphery of the holding cylinder 23 a toward the position where it comes into contact with the transfer cylinder 14. During this time, the signature Sa is released from the holding apparatus 9.
[0018]
On the other hand, the folded signature Sb formed between the lower-stage folding cylinder 22b with a saw blade and the holding cylinder 23b has a folding line portion added to the holding apparatus 9, and a predetermined angle along the outer periphery of the holding cylinder 23b. And is released from the holding device 9. The signature Sb released from the holding device 9 is nipped between the lower paper guide belt 26b and the lower conveyance belt 25b and conveyed along the outer periphery of the transfer cylinder 14.
Here, the front end of the signature Sa released from the restrained state by the middle paper guide belt 26c immediately before the position where the transfer drum 14 and the upper holding drum 23a contact each other is folded from the restrained state by the lower paper guide belt 26b. Since it is configured so as to coincide with the leading end of the stake Sb, the signatures Sa and Sb released from the respective paper guide belts 26b and 26c overlap with each other in a state where the respective leading ends are aligned, and the upper paper guide belt 26a. And the lower conveyor belt 25b. The signatures Sa and Sb overlapped in two parts are conveyed by a certain distance in this state, and then sandwiched between the upper conveyance belt 25a and the lower conveyance belt 25b connected to the upper paper guide belt 26a, It is conveyed toward the impeller 17 at a pitch. The subsequent movements are the same as in the first embodiment.
In the folding machine according to the second embodiment, as described above, the cutting / folding means 20a, 20b is a two-cylinder system including the folding cylinders 22a, 22b with saw blades and the holding cylinders 23a, 23b. Compared with the folding machine according to the first embodiment, the saw cylinders 11a and 11b are not necessary, and thus the same function as the folding machine in the first embodiment can be obtained with a compact structure.
[0019]
【The invention's effect】
As described above, the rotary machine of the rotary press according to the present invention is provided with two sets of cutting / folding means having a size corresponding to half-width continuous paper in the upper and lower stages, and formed by the respective cutting / folding means. The structure is such that folded signatures are stacked and ejected via a common transfer cylinder, so that a single row of signatures can be ejected by a half-width folding machine, which is economical, easy to work with and saves space. It can cope with speeding up.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an entire folder of a rotary press according to a first embodiment of the present invention.
FIG. 2 is a side view showing the main part of FIG. 1;
FIG. 3 is a schematic view showing a state in which signatures are stacked on the transfer cylinder of the folding machine according to the first embodiment.
FIG. 4 is a perspective view showing the entire folding machine of a rotary press according to a second embodiment of the present invention.
5 is a side view showing the main part of FIG. 4;
FIG. 6 is a schematic view showing a state in which signatures are stacked on the transfer cylinder of the folding machine according to the second embodiment.
FIG. 7 is a perspective view showing a folder of a conventional commercial web offset press.
FIG. 8 is a perspective view showing a folder of a conventional commercial offset rotary press.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Drag roller 2 Slitter 3 Folding means 4 Discharge means 5 Saw blade 6 Saw blade receiver 7 Needle device 8 Folding blade device 9 Holding devices 10a, 10b, 20a, 20b Cutting and folding means 11a, 11b Saw cylinders 12a, 12b, 22a, 22b Folding cylinders 13a, 13b, 23a, 23b Holding cylinders 14 Transfer cylinders 15a, 25a Upper conveying belts 15b, 25b Lower conveying belts 16a, 26a Upper paper guiding belts 16b, 26b Lower paper guiding belts 16c, 26c Middle paper guiding belts 17 Impeller 18 Discharge conveyor 19, 29 Paper guide device 50 Right angle folding device 60, 61 Reverse roller 62 Roller group W Full width continuous paper Wa, Wb Half width continuous paper Sa, Sb Signature

Claims

連続紙の幅方向の中央を走行方向に沿って縦切りし、これによって得られた半幅の連続紙を走行方向と略直角に切断したのち、その断裁線に略平行に半分に折り畳んで折り丁を排出する輪転機の折機において、上記半幅の連続紙に対応する大きさの断裁・折り畳み手段を上記折機の上段と下段に配設するとともに、該断裁・折り畳み手段の間に折り丁重ね手段を設けてなり、上記断裁・折り畳み手段によって折り丁を形成し、該折り丁を上記折り丁重ね手段によって重ね合わせて送り出すように構成し、上記折り丁重ね手段が受け渡し胴と紙案内装置とを備え、該受け渡し胴は、上記断裁・折り畳み手段の各胴と等速で回転駆動され、上記紙案内装置は、上下段の断裁・折り畳み手段で形成されたそれぞれの折り丁を上記受け渡し胴の外周面上で重なるように挟持して搬送するように構成したことを特徴とする輪転機の折機。Cut the center of the continuous paper in the width direction along the running direction, cut the half-width continuous paper obtained in this way approximately at right angles to the running direction, and then fold it in half in parallel to the cutting line. In the folding machine of the rotary press that discharges paper, cutting and folding means having a size corresponding to the half-width continuous paper are arranged in the upper and lower stages of the folding machine, and the signatures are stacked between the cutting and folding means. A signature is formed by the cutting / folding means, and the signature is overlapped and sent out by the signature stacking means. The signature stacking means includes a transfer cylinder, a paper guide device, and the like. The transfer cylinder is driven to rotate at a constant speed with each cylinder of the cutting / folding means, and the paper guide device transfers each signature formed by the upper and lower cutting / folding means to the transfer cylinder. Outer peripheral surface Folding machine of a rotary press, characterized by being configured to carry clamped to overlap with.