JP2005015170A

JP2005015170A - Sheet winding shaft device

Info

Publication number: JP2005015170A
Application number: JP2003182925A
Authority: JP
Inventors: Azuma Kawamura; 東河村; Toshifumi Kanemitsu; 利文金光
Original assignee: Hagiwara Industries Inc
Current assignee: Hagiwara Industries Inc
Priority date: 2003-06-26
Filing date: 2003-06-26
Publication date: 2005-01-20

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet winding shaft device capable of independently actuating a winding core locking means and a rotation force transmitting means without using a rubber tube. <P>SOLUTION: The sheet winding shaft comprises a winding rotation transmitting means 12 equipped with a pneumalically pressed pressure receiving member 14, and transmitting rotation force related to displacement force of the receiving member 14 from a winding rotation shaft member 2 driven to rotate to a winding portion 3 externally fitted thereto; and a winding core locking means 13 locking the winding core A externally fitted with the winding portion 3 to the winding portion 3 or releasing the locking state. An air passage 8 not related to the winding core locking means 13 is formed on a thick wall portion of the winding rotation shaft member 2. The air passage 8 makes compressed air generated outside of the winding rotation shaft member 2 directly contact with the pressure receiving member 14, thereby adding the air pressure. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、巻芯を装着してシートを巻取るシート巻取軸装置に関するものである。
【０００２】
【従来の技術】
従来、紙やプラスチックフィルム等の広幅シートを縦にスリットしてなる細幅シートをその細幅シート毎に巻き取る巻取軸装置では、多数の巻芯（通常は紙管）を巻取回転軸部材の周面に形成された巻取部にそれぞれ装着してその巻芯の上に細幅シートを巻き取っており、その巻取りが終了した後には巻芯ごと抜き取り、新たな巻芯を巻取部に装着するようにしている。したがって、巻芯を装着したり、抜き取ったりするときは巻芯は巻取回転軸部材に対してフリーであり、巻取中では巻芯は巻取部に固定されている必要がある。
【０００３】
このように必要時に巻芯を開放したり固定したりするシート巻取軸装置として、本出願人は、特許文献１に示すように、空気圧で押圧される受圧部材を具備したもので該受圧部材の変位力に関連した大きさの回転力を、駆動回転される巻取回転軸部材からこれに外嵌された巻取部に伝達するものとした巻取回転伝達手段と、前記巻取部とこれに外嵌された巻芯とを係止状態となすと共に該係止状態を空気圧の付与により解除させるものとした巻芯係止手段とを備えたものを既に提案している。
【０００４】
該提案に係るシート巻取軸装置では、巻取回転軸部材に形成された独立の空気路を通じて供給された圧縮空気がゴムチューブを膨張変形させ、該ゴムチューブの膨張変形個所が前記受圧部材に圧接して該ゴムチューブ内の空気圧に対応した押圧力を前記受圧部材に付与するのであり、これにより上記回転力伝達手段は該ゴムチューブ内の空気圧に対応した回転力を巻取回転軸部材から巻取部に伝達する。
【０００５】
【特許文献１】
特開２０００−３２７１８２号公報
【０００６】
【発明が解決しようとする課題】
上記した特許文献１に示す従来のシート巻取軸装置では、次のような問題がある。
即ち、前記回転力伝達手段により伝達される回転力の大きさは前記ゴムチューブ内に圧縮空気を供給した際の該ゴムチューブの膨縮変形力により決定されるが、該ゴムチューブはこれの外周面にワイヤを巻き付けることにより特定個所に止着されるため、その止着個所から該ゴムチューブ内の圧縮空気が漏れ出ることがあり、この場合に前記ゴムチューブは予定された押圧力を発揮することができず、シートの巻取り処理が的確に行えないことがある。
そして、前記ゴムチューブ内から漏れ出た圧縮空気が前記巻取部への巻芯の固定状態を弛緩させたり或いは予定しない有害な部品接触を生じさせるなどしてシートの巻取り処理を不可能となすこともある。
【０００７】
また前記ゴムチューブと接触する部材の製作時に生じた鋭利なエッジが前記ゴムチューブに繰り返し圧接してこれを破損させることが生じて既述と同様な弊害を生じさせるのであり、これに対処するには該エッジを除去することが必要となるが、実際上その完全な除去は極めて難しいのである。
【０００８】
さらには前記ゴムチューブが前記受圧部材の熱を伝達されて比較的早く劣化することが生じるのであり、このようにゴムチューブが劣化したときは、それがひび割れた状態となってその内方の圧縮空気が漏れ出ることが生じて、やはり既述と同様な弊害を生じさせるのである。
【０００９】
本発明は、斯かる実情に対処するため、前記巻芯係止手段と、前記回転力伝達手段とをゴムチューブを使用することなく、それぞれ独立して作動させることができるシート巻取軸装置を提供することを目的とする。
【００１０】
【課題を解決するための手段】
上記目的を達成するため、本発明は、請求項１に記載したように、空気圧により押圧される受圧部材を具備し、該受圧部材の変位力に関連した大きさの回転力を、駆動回転される巻取回転軸部材からこれに外嵌された巻取部に伝達するものとした巻取回転伝達手段と、前記巻取部にこれに外嵌された巻芯を必要に応じて係止状態としたり該係止状態を解除させるものとした巻芯係止手段とを備えたシート巻取軸において、前記巻取回転軸部材の肉厚部に前記巻芯係止手段とは関連しない空気路を形成し、該空気路は前記巻取回転軸部材の外方で生成された圧縮空気を前記受圧部材に直接に接触させて空気圧を付与する構成としている。
【００１１】
さらに詳細には、請求項２に記載したように、空気圧により押圧される受圧部材を具備し、該受圧部材の変位力に関連した大きさの回転力を、駆動回転される巻取回転軸部材からこれに外嵌された巻取部に伝達するものとした巻取回転伝達手段と、前記巻取部とこれに外嵌された巻芯とを係止状態となしたり該係止状態を空気圧の付与により解除させるものとした巻芯係止手段とを備えたシート巻取軸において、前記巻取回転軸部材の肉厚部に第一空気路と第二空気路をそれぞれ独立した状態に形成し、該第一空気路は前記巻取回転軸部材の外方で生成された圧縮空気を前記受圧部材に直接に接触させて空気圧を付与し、第二空気路は前記巻取回転軸部材の外方で生成された圧縮空気を前記巻芯係止手段に流入させる構成としている。
【００１２】
この発明によれば、前記受圧部材は従来のゴムチューブを介することなく圧縮空気で直接に押圧されるため、圧縮空気の圧力変化に対応してその変位力が正確に変化されるようになり、したがって前記巻取回転軸部材から前記巻取部へ伝達される回転力も、圧縮空気の圧力変化に対応して正確に変化されるものとなる。
【００１３】
この際、次のように具体化するのがよいのであって、即ち、請求項３に記載したように、前記巻取部が複数形成してあり、第一空気路は前記巻取回転軸部材の中心線個所に形成した第一直状孔と該第一直状案孔から前記中心線回りの半径方向へ向かう第一半径孔を具備し、前記第二空気路は前記巻取回転軸部材の肉厚部のうち前記第一空気路の存在個所を除いた範囲内で且つ前記中心線回りの複数の略等角配置個所のそれぞれに形成された前記中心線方向へ向かう第二直状孔と、該第二直状孔から前記中心線回りの半径方向へ向かう第二半径孔とを具備した構成となす。
これによれば、前記巻取回転伝達手段と、前記巻芯係止手段とに空気圧を付与するための空気路が簡易に形成されると共に前記巻取回転軸部材の回転時の釣合性を良好となすのである。
【００１４】
【発明の実施の形態】
次に本発明を図１から図９に示す実施の形態について詳細に説明する。図１及び図２中、１はシート巻取軸装置で、該シート巻取軸装置１は図示しない駆動源からの動力を受けて回転する巻取回転軸部材２と、該巻取回転軸部材２の外周面にこれの中心線Ｘ方向に配列されて外嵌装着された複数の巻取部３とを備えていると共に、その巻取回転軸部材２の各端部側には巻取回転軸部材２を回転自在に支持する軸受部４ａ、４ｂが形成されている。この際、一方の軸受部４ａは巻取回転軸部材２を片持ち支持するに足りる支持能力を有し、また他方の軸受部４ｂは巻取回転軸部材２から必要に応じて簡便に離脱させ得るものとなされる。そして巻取回転軸部材２の一方の端部には、巻取回転軸部材２の回転中でも外方の空気供給源から任意に昇圧された圧縮空気を空気供給管を経て該巻取回転軸部材２の内方に送り込むことを可能となす２つの空気供給接続体５ａ、５ｂが取り付けられている。５ｃは図示しないモータなどの回転駆動力を巻取回転軸部材２に入力するためのプーリである。なお図１中、巻取部３はその内部構造を省略した状態で表現されている。
上記空気供給接続体５ａ、５ｂを通じて空気が送り込まれるようになされた巻取回転軸部材２においては、図３に示すように、その肉厚部に第一空気路８と第二空気路９がそれぞれ独立した状態に形成されており、第一空気路８は巻取回転軸部材２の中心線ｘ個所に形成した第一直状孔８ａと該第一直状孔８ａから前記中心線ｘ回りの半径方向へ向かう第一半径孔８ｂを具備し、第二空気路９は巻取回転軸部材２の肉厚部のうち第一空気路８の存在個所を除いた範囲内で且つ中心線ｘ回りの複数の等角配置個所ｐのそれぞれに中心線ｘ方向へ向かうように形成された第二直状孔９ａと、該第二直状孔９ａから中心線ｘ回りの半径方向へ向かう第二半径孔９ｂを具備している。
【００１５】
そして一方の空気供給接続体５ａは図示しない制御装置により適当圧に制御された圧縮空気を第一空気路８内に送り込むものとなされており、他方の空気供給接続体５ｂは特定圧力に昇圧された部品駆動用の圧縮空気を第二空気路９内に送り込むものとなされている。
【００１６】
図１、図２及び図４に示すように、上記一方の軸受部４ａは、巻取回転軸部材２に固定されたフランジ体６、巻取回転軸部材２に外嵌されてフランジ体６に固定されたスリーブ部材７、固定状態の筒状保持部材１０、該筒状保持部材１０とスリーブ部材７との間に装着されて巻取回転軸部材２を回転自在に支持するためのベアリング２１、２１などからなっている。
【００１７】
また本例のシート巻取軸装置１は、巻取回転軸部材２に多数の巻取部３を並列状態で備えていて、各巻取部３にて一つの巻芯Ａを保持し得るようになされているものである。巻取部３のそれぞれは図４〜図８に示すように、巻取回転伝達手段１２と巻芯係止手段１３と有している。そして巻取回転伝達手段１２は、巻取回転軸部材２の第一半径孔８ｂとしての第一シリンダ、径方向Ｙへ移動可能なように該シリンダ孔８ｂ内に嵌挿されている受圧部材としての第一のピストン１４、巻取回転軸部材２の周りに回転可能に設けられている支持環１５、該支持環１５の周りに位置して中心線ｘ方向に移動可能に設けられたスライド環１６、巻取部３の外周部を構成していて巻取回転軸部材２の周りに回転可能に設けられた外周環１７、該外周環１７から出没可能に設けられて突出時に巻芯Ａを固定状に係止することができるようにした係止爪１８（図８参照）、該係止爪１８を巻取回転軸部材２の中心へ向けて付勢する係止爪付勢手段１９から構成されている。
【００１８】
第一のピストン１４は、第一直状孔８ａから巻取回転軸部材２の外方に貫通され且つ巻取回転軸部材２の周方向に等間隔を取って配置された複数の第一シリンダ８ｂのそれぞれの内部に挿入され、該第一シリンダ８ｂに案内されることで巻取回転軸部材２の径方向Ｙに移動できるようになされている。そして、第一のピストン１４は第一空気路８を通じて供給される制御用の圧縮空気の圧力によって巻取回転軸部材２の径方向Ｙにおける外方に向けて押し出されるもので、第一シリンダ８ｂを覆う形で配置されている上記支持環１５の内周面に当接可能となされている。巻取部３のそれぞれは巻取回転軸部材２の周りに取り付けられた一対のベアリング２１を有しており、支持環１５は一方のベアリング２１が支持することで巻取回転軸部材２の周りに回転可能に設けられているもので、図示されているように第一シリンダ８ｂのそれぞれの外方側の開口を覆うようにして配置されている。そして、支持環１５の内周面１５ａは上記第一のピストン１４と対応するように位置されていて、上述したように径方向Ｙへ押し出されてきた第一のピストン１４の外方端面１４ａが当接できるようになされている。上記第一のピストン１４は第一直状孔８ａに送り込まれた圧縮空気の圧力が加えられることにより該支持環１５の内周面１５ａに摺接し得る状態で当接するもので、第一のピストン１４が支持環１５に当接した状態で巻取回転軸部材２が回転しているときにはその当接により支持環１５自体の自由回転（巻取回転軸部材２に対する相対的な回転）は抑制されることになるのであり、支持環１５に外部から所要以上の回転抑制力が加わることで巻取回転軸部材２に対して相対的に回転できるように設けられている。
【００１９】
また巻芯係止手段１３は次のようになされている。即ち、巻取回転軸部材２と同心とした筒体状周面１５ｂと、該筒体状周面１５ｂに連続して巻取回転軸部材２の径方向Ｙに立ち上がる縦壁面１５ｃとからなる取付段部２２が支持環１５の外周に形成されていて、この取付段部２２に上記スライド環１６が中心線ｘ方向に移動可能に外挿されており、また支持環１５を支持している一方（図４中の右側）のベアリング２１の存在する側に位置する前記縦壁面１５ｃを中心線ｘ方向の一側における終端となし、スライド環１６がこの縦壁面１５ｃの位置で停止されるようになしている。該スライド環１６には図５に示されているように、上記縦壁面１５ｃ側を開口としたスプリング装着穴２３が周方向の適当間隔位置ごとに設けられており、スプリング装着穴２３のそれぞれに配置された付勢手段２４であるスプリングによってスライド環１６が縦壁面１５ｃ側の反対へ向けて付勢されるようになされている。また、スライド環１６の外周には周方向に等間隔を取って傾斜部２５が複数（図示の例では三つ）設けられており、それぞれの傾斜部２５の上面は前記スプリング２４の付勢方向に向けて下り傾斜状となされている。
【００２０】
上記外周環１７はこれに対応した上記一対のベアリング２１、２１により巻取回転軸部材２に対して回転可能に設けられた略筒状のものであって、図５中右側の一つのベアリング２１の外周に位置する支持環１５の取付部分にこの外周環１７の一方の周縁部が重なるようにして取付固定されると共に、外周環１７の他方の周縁部が図５中左側の一つのベアリング２１に支持されたものとなされている。このように外周環１７は支持環１５に連結されて一体化されていることから、上記第一のピストン１４が支持環１５に当接して巻取回転軸部材２と一体となって回転するときに、外周環１７も、第一のピストン１４と支持環１５との当接による摩擦力を介して第一のピストン１４と支持環１５とがスリップする状態の下で巻取回転軸部材２よりも少し遅い速度で回転するものとなる。
【００２１】
そして、該外周環１７は上記スライド環１６の傾斜部２５と対応する位置に貫通孔となされた径方向Ｙの案内孔２６を有したものとなされている。案内孔２６には上記係止爪１８が巻取回転軸部材２内にて径方向Ｙへの移動可能に内挿されており、該係止爪１８はその下端面を、図示されているようにスライド環１６における傾斜部２５と同じく上記スプリング２４の付勢方向に下り傾斜させて、前記傾斜部２５上に乗せ置き、該傾斜部２５に対して相対移動可能なように配置されている。即ち、スライド環１６が中心線ｘ方向へ移動することで係止爪１８が案内孔２６に案内された状態で巻取回転軸部材２の径方向Ｙに移動するようになされており、スライド環１６がスプリング２４の付勢方向に押し出されることで係止爪１８が外周環１７から外方に突出して、巻取部３に巻芯Ａが外嵌装着されているとき、その巻芯Ａをスプリング２４の付勢力で固定状に係止した状態となり、また前記スライド環１６が後述するように係止解除部１３の働きにより前記縦壁面１５ｃ側に移動すると係止爪１８は巻取回転軸部材２の中心方向に移動できるようになされている。
【００２２】
上記係止爪付勢手段１９は上述したようにスライド環１６が縦壁面１５ｃ側に移動するときに係止爪１８を巻取回転軸部材２の中心方向に移動させるもので、常時係止爪１８を巻取回転軸部材２の中心側に付勢するスプリングリングとなされている。該スプリングリング１９を上記外周環１７の周りに配置させることができるようにその外周環１７と前記係止爪１８とには取付溝２７が周方向に連続するように形成されていて、この取付溝２７に前記スプリングリング１９を位置させておくことで係止爪１８に対して常時付勢力が付与されている。図７及び図８においては、前記取付溝２７が外周環１７と係止爪１８とに周方向に連続する状態で設けられている状態を示しており、また、図５は係止爪１８が没しているときの状態を示している。なお、スプリングリング１９の付勢力はスライド環１６により押し上げられるときの係止爪１８の位置を変えない強さに調整されている。
【００２３】
上記係止解除部１３は、図４、図５及び図９に示すように、上記スライド環１６に関連して形成されており、該係止解除部１３は、上記スライド環１６と対向するように図５中左側である他方のベアリング２１側に位置され巻取回転軸部材２の周りに取り付けられているシリンダブロック２８と、該シリンダブロック２８において周方向に等間隔を取って配置されて（図９参照）中心線を前記中心線ｘ方向と平行となされた複数の第二シリンダ２９のそれぞれに装着されていて前記中心線ｘ方向へ移動可能となされた第二ピストン３０とからなるものである。図９中には第二シリンダ２９は６個示されてるが、８個〜１０個など任意の数となしてもよい。
【００２４】
前記シリンダブロック２８は、巻取回転軸部材２の第二空気路９から第二シリンダ２９に空気を送り込むことができるように第二直状孔９ａから外方に向けて貫通している第二半径孔９ｂに対応しており、該第二半径孔９ｂの外方端の開口部分の外方側に位置するように取り付けられている。そして、シリンダブロック２８の内周面に周回して設けられた凹溝と各第二シリンダ２９との接点において各第二シリンダ２９に通じる透孔３２を形成していて、第二直状孔９ａから第二半径孔９ｂを経て送られてきた圧縮空気の圧力が透孔３２を通って第二シリンダ２９に入るようになり、その第二シリンダ２９に送り込まれた圧縮空気の圧力によって第二ピストン３０が上記スライド環１６側へ向けて突出するようにしている。
図９はシリンダブロック２８における第二シリンダ２９の配置を示しており、この図中２８ａは、前記第二ピストン３０が移動できる状態を確保して各第二シリンダ２９の開口を閉じるカバー２８ｂを取り付けるためのビス孔を示している。
【００２５】
上記第二ピストン３０は突出してスライド環１６側に進むことで該スライド環１６と当接するようになり、圧縮空気の圧力を受けてこの第二ピストン３０がスライド環１６をスプリング２４の付勢力に抗してスプリング２４の付勢方向とは逆方向に押し込むように設けられており、スライド環１６がスプリング２４の付勢方向とは逆方向に押し込まれて移動すると、傾斜部２５も移動することから、係止爪付勢手段１９によって付勢されている係止爪１８が傾斜部２５に対して相対移動する状態で巻取回転軸部材２の中心側に向けて没するように降り、係止爪１８が巻芯Ａと係止状態であった場合にはその係止状態を解除するようにしている。
【００２６】
さらに上記第二ピストン３０に関連してスプリング３３が装着されていて、第二空気路９側から送り込まれる圧縮空気の圧力が人為操作などにより低下したときに第二ピストン３０を第二シリンダ２９の奥側（図５中左側）に押し戻して待機位置に定置するようにしている。この時、後述するようにスライド環１６がスプリング２４の付勢方向に進み出ることになって、係止爪１８が巻取回転軸部材２の径方向Ｙに向けて押し上げられることになる。なお、上記スプリング３３は設けなくてもよいものであり、この場合、第二空気路９側からの空気の圧力が低下したとき、スライド環１６を移動させるスプリング２４の付勢力により第二ピストン３０は待機位置に押し戻される。
【００２７】
次に上記構造のシート巻取軸装置１の使用例及び作動について説明する。
巻取部３に巻芯Ａを装着するときには、所要の圧力（例えば０．１〜０．３ＭＰａ程度）に昇圧された圧縮空気が第二空気路９に送り込まれる。そして該圧縮空気が第二空気路９から第二半径孔９ｂを経て係止解除部１３の第二シリンダ２９内に送り込まれ、第二ピストン３０が押し出される。このように押し出された状態の第二ピストン３０がスライド環１６を支持環１５の縦壁面１５ｃに押さえ付ける。これにより、スライド環１６が縦壁面１５ｃに突き当てられて位置決めされることから、係止爪１８は外周環１７の外周面の高さ位置から外方に突出する状態とはならず、案内孔２６において没した状態となって、巻芯Ａを外嵌装着し易い状態となる。
【００２８】
巻芯Ａを装着した後には第二空気路９に送り込まれる圧縮空気の圧力を下げるように操作されて、係止解除部１３における第二シリンダ２９内の空気圧が下がることから第二ピストン３０とスライド環１６とがスプリング２４の付勢方向に移動し、その付勢方向に移動する傾斜部２５により係止爪１８が巻取回転軸部材２の径方向Ｙの外方へ向けて押し上げられて案内孔２６内から外方へ突出し、巻芯Ａの内周面に当接して巻芯Ａを固定状に係止するようになる。
【００２９】
巻取回転軸部材２の第一空気路８における第一直状孔８ａ内には図示しない制御装置により圧力を制御された圧縮空気（例えば圧力が０．５〜１．５ＭＰａ程度のもの）が送り込まれるのであり、この第一直状孔８ａ内に送り込まれた圧縮空気の圧力は第一半径孔８ｂを通じて第一ピストン１４まで到達してこれの受圧面１４ｂを押圧するため、第一ピストン１４は巻取回転軸部材２の径方向Ｙにおける外方へ向けて押し上げられ、支持環１５に摺接可能な状態で圧接される。該圧接状態の下で巻取回転軸部材２がプーリ５ｃを経て外部から回転駆動力Ｔを付与されて回転されるのであり、これに関連して支持環１５及び外周環１７が巻取回転伝達手段１２を介することにより、巻取回転軸部材２の回転速度に対し適当なスリップの生じる回転速度（例えば巻取回転軸部材２の回転速度よりも毎分５０回転程度遅い速度）で回転するようになり、シートの巻取りが開始される。なお係止解除部１３は巻取回転軸部材２と一体となって回転する。
【００３０】
そして、シートの巻き取り中に巻取りの張力が所定以上に大きくなろうとすると、これを図示しないセンサが検出し、これの検出情報に基づいて図示しない制御装置が第一空気路８内に供給している圧縮空気の圧力を低下させるように制御するのであり、これにより第一ピストン１４が支持環１５を押圧する力が減少してこれらの間の摩擦力が減少するため、巻取回転伝達手段１２による伝達回転力が小さくなり、シートは必要以上の張力が加わった状態の下で巻き取られる状態を防止される。逆に、シートの巻き取り中にその巻取り張力が所定以上に小さくなろうとすると、これを前記のセンサが検出し、これの検出情報に基づいて図示しない制御装置が第一空気路８内に供給している圧縮空気の圧力を上昇させるように制御するのであり、これにより第一ピストン１４が支持環１５を押圧する力が増大してこれらの間の摩擦力が増大するため、巻取回転伝達手段１２による伝達回転力が大きくなり、シートは必要以上に小さい張力で巻き取られる状態を防止される。このように、第一空気路８内に供給された圧縮空気の圧力が直接に第一ピストン１４の受圧面１４ｂを押圧して第一ピストン１４を支持環１５に相対的な摺接変位の生じるように圧接させるため、第一空気路８に送り込まれる圧縮空気の圧力を制御することでシートの巻取り中の張力を任意大きさに調整することができる。なお、シート巻取り中のシートの張力は常に一定に保持させることも差し支えないのであるが、実際には、巻付け終了後の巻芯Ａに過大なシート巻付け圧力が作用しないようにするため、巻芯Ａへの取り径が増大するに伴って漸次に減少させるのであり、例えば巻き終わり時のシートの張力は巻き始め時のそれの凡そ５０％程度となされる。
【００３１】
シートの巻取りを終了するときは巻取回転軸部材２への回転駆動力の付与を停止させると共に第一空気路８内の空気圧を低下させ、さらに第二空気路９に圧縮空気を送り込む。第二空気路９内に送り込まれた圧縮空気の圧力は第二シリンダ２９内に伝達されて第二ピストン３０を押し変位させ、該変位がスライド環１６をスプリング２４の付勢方向とは逆方向へ移動させる。これにより、係止爪１８は巻取回転軸部材２の中心側に向けて下がり、巻芯Ａの係止状態を解除する。この後、シートを巻取った巻芯Ａを巻取部３に対し横方へずらし、シート巻取軸装置１から取り外す。
【００３２】
【発明の効果】
以上説明した本発明によれば、次のような効果が得られる。
即ち、請求項１のものによれば、従来のゴムチューブを使用しない構成としたため、ゴムチューブに起因した従来の不都合を全て解消させることができるのであり、したがって巻取回転軸部材２から巻取部３へ任意な大きさの回転力をコンパクト且つ簡易な構造により環境温度による影響などを受けることなく安定的に伝達させることができる。
【００３３】
また請求項２のものによれば、請求項１記載の発明の場合と同一の効果が得られる上に次のような効果が得られるのであって、即ち、第一空気路８や第二空気路９が巻取回転軸部材２の肉厚部に一体状に形成されるため、第一空気路８や第二空気路９を巻取回転軸部材２の内部構造を複雑化させないで形成できるほか関連部品の交換が容易に行えるものとなすことができる。
【００３４】
さらに請求項３記載のものによれば、巻取回転伝達手段１２と巻芯係止手段１３とにそれぞれ独立して空気圧を付与するための空気路８、９が巻取回転軸部材２の回転時の釣合性を損なうことなく簡易に形成されるものとなる。
【図面の簡単な説明】
【図１】本発明に係るシート巻取軸の主要部を示す側面視断面図である。
【図２】前記シート巻取軸に係りＡは一部を省略した右側面図でＢは左側面図である。
【図３】前記シート巻取軸の巻取回転軸部材に係りＡはｘ１−ｘ１部を示す断面図でＢはｘ２−ｘ２部を示す断面図である。
【図４】前記シート巻取軸の巻取部を示す断面図である。
【図５】前記巻取部の拡大断面図である。
【図６】前記シート巻取軸の巻取回転伝達手段個所の断面図である。
【図７】前記シート巻取軸の外環部と係止爪を示す説明図である。
【図８】前記シート巻取軸の係止爪とスライド環の傾斜部を示す説明図である。
【図９】前記シート巻取軸の第二シリンダ個所を示す断面図である。
【符号の説明】
２巻取回転軸部材
３巻取部
８第一空気路
８ａ第一直状孔
８ｂ第一半径孔（第一シリンダ）
９第二空気路
９ａ第二直状孔
９ｂ第二半径孔
１２巻取回転伝達手段
１３巻芯係止手段
１４受圧部材（第一ピストン）
Ａ巻芯
ｐ特定角度範囲個所
ｘ中心線[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sheet take-up shaft device that winds a sheet by mounting a winding core.
[0002]
[Prior art]
Conventionally, in a take-up shaft device that winds a narrow sheet obtained by vertically slitting a wide sheet such as paper or plastic film for each narrow sheet, a large number of cores (usually paper tubes) are wound around a take-up rotary shaft. Each is mounted on a winding part formed on the peripheral surface of the member, and the narrow sheet is wound on the winding core. After the winding is completed, the whole winding core is taken out and a new winding core is wound. It is intended to be attached to the handle. Therefore, when the winding core is attached or removed, the winding core is free with respect to the winding rotary shaft member, and the winding core needs to be fixed to the winding portion during winding.
[0003]
As described above, as disclosed in Patent Document 1, the present applicant has a pressure receiving member that is pressed by air pressure as a sheet winding shaft device that opens and fixes the winding core when necessary. A winding rotation transmitting means for transmitting a rotational force having a magnitude related to the displacement force of the winding from a winding rotary shaft member that is driven and rotated to a winding portion that is externally fitted thereto, and the winding portion; There has already been proposed one provided with a core locking means for setting the outer core fitted on the outer core to a locked state and releasing the locked state by applying air pressure.
[0004]
In the sheet take-up shaft device according to the proposal, compressed air supplied through an independent air passage formed in the take-up rotary shaft member causes the rubber tube to expand and deform, and the expansion and deformation portion of the rubber tube serves as the pressure receiving member. The pressure receiving member is pressed to apply a pressing force corresponding to the air pressure in the rubber tube to the pressure receiving member, whereby the rotational force transmitting means applies a rotational force corresponding to the air pressure in the rubber tube from the winding rotary shaft member. Transmit to the winding unit.
[0005]
[Patent Document 1]
JP 2000-327182 A
[0006]
[Problems to be solved by the invention]
The conventional sheet take-up shaft device shown in Patent Document 1 has the following problems.
That is, the magnitude of the rotational force transmitted by the rotational force transmitting means is determined by the expansion / contraction deformation force of the rubber tube when compressed air is supplied into the rubber tube. Since the wire is wound around the surface and fixed at a specific location, the compressed air in the rubber tube may leak from the fixed location, and in this case, the rubber tube exhibits a predetermined pressing force. In some cases, the sheet winding process cannot be performed accurately.
And the compressed air leaking out from the rubber tube makes the winding of the sheet impossible by loosening the fixed state of the core to the winding unit or causing unintended harmful component contact. Sometimes it does.
[0007]
In addition, the sharp edge generated when the member that contacts the rubber tube is repeatedly pressed against the rubber tube to cause damage to the rubber tube, causing the same adverse effects as described above. Need to remove the edge, but in practice its complete removal is extremely difficult.
[0008]
Furthermore, the rubber tube is deteriorated relatively quickly when the heat of the pressure receiving member is transmitted. When the rubber tube deteriorates in this way, it is cracked and compressed inward. Air leaks out and causes the same harmful effects as described above.
[0009]
In order to cope with such a situation, the present invention provides a sheet take-up shaft device capable of independently operating the winding core locking means and the rotational force transmitting means without using a rubber tube. The purpose is to provide.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, a pressure receiving member pressed by air pressure is provided, and a rotational force having a magnitude related to the displacement force of the pressure receiving member is driven and rotated. A winding rotation transmitting means for transmitting from the winding rotary shaft member to the winding portion fitted to the winding rotary shaft member, and a winding state fitted to the winding portion to the winding portion, if necessary. An air passage that is not related to the core locking means in the thick portion of the winding rotary shaft member. , And the air passage is configured to apply compressed air generated outside the winding rotary shaft member directly to the pressure receiving member to apply air pressure.
[0011]
More specifically, as described in claim 2, a take-up rotating shaft member that includes a pressure-receiving member that is pressed by air pressure, and that is driven and rotated by a rotational force having a magnitude related to the displacement force of the pressure-receiving member. The winding rotation transmitting means for transmitting to the winding part fitted to the winding part, and the winding part and the winding core fitted to the winding part are brought into a locked state, or the locked state is pneumatically changed. In the sheet take-up shaft provided with the winding core locking means that is to be released by applying the first air passage and the second air passage to the thick portion of the take-up rotary shaft member, respectively, in an independent state The first air passage applies compressed air generated by contacting the pressure receiving member directly with the compressed air generated outside the winding rotary shaft member, and the second air passage is provided with the winding rotary shaft member. The configuration is such that compressed air generated outside flows into the core locking means.
[0012]
According to this invention, since the pressure receiving member is directly pressed by compressed air without using a conventional rubber tube, the displacement force is accurately changed in response to the pressure change of the compressed air, Accordingly, the rotational force transmitted from the take-up rotating shaft member to the take-up portion is also accurately changed corresponding to the pressure change of the compressed air.
[0013]
At this time, it is better to embody as follows, that is, as described in claim 3, a plurality of the winding portions are formed, and the first air passage is the winding rotary shaft member. A first straight hole formed at a center line portion of the first radial hole and a first radial hole extending from the first straight plan hole in a radial direction around the center line, and the second air passage is the winding rotary shaft member The second straight hole formed in each of a plurality of substantially equiangularly arranged locations around the center line within a range excluding the location where the first air passage exists in the thick portion of And a second radial hole that extends from the second straight hole in the radial direction around the center line.
According to this, an air path for applying air pressure to the winding rotation transmission means and the core locking means is simply formed, and the balance of the winding rotary shaft member during rotation is improved. It will be good.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Next, the embodiment of the present invention shown in FIGS. 1 to 9 will be described in detail. 1 and 2, reference numeral 1 denotes a sheet take-up shaft device. The sheet take-up shaft device 1 receives a power from a drive source (not shown) and rotates, and the take-up rotary shaft member. 2 is provided with a plurality of winding portions 3 that are arranged in the direction of the center line X and fitted on the outer peripheral surface thereof, and each end of the winding rotary shaft member 2 is wound and rotated. Bearing portions 4a and 4b for rotatably supporting the shaft member 2 are formed. At this time, one bearing portion 4a has a supporting capability sufficient to support the winding rotary shaft member 2 in a cantilever manner, and the other bearing portion 4b can be easily detached from the winding rotary shaft member 2 as required. To be gained. Then, at one end of the take-up rotary shaft member 2, compressed air, which is arbitrarily pressurized from an external air supply source, is supplied to the take-up rotary shaft member 2 through an air supply pipe even while the take-up rotary shaft member 2 is rotating. Two air supply connectors 5a and 5b that can be fed inward are attached. Reference numeral 5 c denotes a pulley for inputting a rotational driving force such as a motor (not shown) to the winding rotary shaft member 2. In FIG. 1, the winding unit 3 is expressed with its internal structure omitted.
In the winding rotary shaft member 2 in which air is sent through the air supply connectors 5a and 5b, as shown in FIG. 3, the first air passage 8 and the second air passage 9 are formed in the thick portion. The first air passage 8 is formed in an independent state, and the first air passage 8 is formed around the center line x from the first straight hole 8a formed in the center line x of the winding rotary shaft member 2 and the first straight hole 8a. And the second air passage 9 is within the range excluding the existence of the first air passage 8 in the thick portion of the winding rotary shaft member 2 and the center line x. A second straight hole 9a formed in each of a plurality of surrounding equiangular locations p so as to extend in the direction of the center line x, and a second direction extending from the second straight hole 9a in the radial direction around the center line x. A radial hole 9b is provided.
[0015]
One air supply connector 5a is configured to send compressed air controlled to an appropriate pressure by a control device (not shown) into the first air passage 8, and the other air supply connector 5b is boosted to a specific pressure. Compressed air for driving the components is sent into the second air passage 9.
[0016]
As shown in FIGS. 1, 2, and 4, the one bearing portion 4 a has a flange body 6 fixed to the winding rotary shaft member 2, and is externally fitted to the winding rotary shaft member 2 to be attached to the flange body 6. A fixed sleeve member 7, a fixed cylindrical holding member 10, a bearing 21 that is mounted between the cylindrical holding member 10 and the sleeve member 7 and rotatably supports the winding rotary shaft member 2; It consists of 21 etc.
[0017]
Further, the sheet winding shaft device 1 of this example includes a large number of winding portions 3 arranged in parallel on the winding rotary shaft member 2 so that one winding core A can be held by each winding portion 3. It has been made. As shown in FIGS. 4 to 8, each of the winding sections 3 has a winding rotation transmission means 12 and a core locking means 13. The winding rotation transmission means 12 is a first cylinder as the first radial hole 8b of the winding rotary shaft member 2, and a pressure receiving member fitted into the cylinder hole 8b so as to be movable in the radial direction Y. The first piston 14, the support ring 15 provided rotatably around the winding rotary shaft member 2, and the slide ring provided around the support ring 15 and movable in the center line x direction 16, an outer peripheral ring 17 that constitutes an outer peripheral portion of the winding unit 3 and is rotatably provided around the winding rotary shaft member 2; A locking claw 18 (see FIG. 8) that can be locked in a fixed manner, and a locking claw biasing means 19 that biases the locking claw 18 toward the center of the winding rotary shaft member 2. It is configured.
[0018]
The first piston 14 passes through the first straight hole 8 a to the outside of the winding rotary shaft member 2 and is arranged at equal intervals in the circumferential direction of the winding rotary shaft member 2. The rotary shaft member 2 is inserted into each of the 8b and is guided by the first cylinder 8b so that it can move in the radial direction Y of the winding rotary shaft member 2. The first piston 14 is pushed outward in the radial direction Y of the winding rotary shaft member 2 by the pressure of compressed air for control supplied through the first air passage 8, and the first cylinder 8b Can be brought into contact with the inner peripheral surface of the support ring 15 arranged so as to cover the inner surface of the support ring 15. Each of the winding units 3 has a pair of bearings 21 attached around the winding rotary shaft member 2, and the support ring 15 is supported by one bearing 21 so that the winding ring 3 is surrounded around the winding rotary shaft member 2. As shown in the drawing, each of the first cylinders 8b is disposed so as to cover the opening on the outer side. The inner peripheral surface 15a of the support ring 15 is positioned so as to correspond to the first piston 14, and the outer end surface 14a of the first piston 14 pushed out in the radial direction Y as described above is formed. It is made to come into contact. The first piston 14 comes into contact with the inner peripheral surface 15a of the support ring 15 in a state where it can come into sliding contact with the pressure of the compressed air fed into the first straight hole 8a. When the take-up rotary shaft member 2 is rotating with 14 in contact with the support ring 15, free rotation of the support ring 15 itself (relative rotation with respect to the take-up rotary shaft member 2) is suppressed by the contact. In other words, the support ring 15 is provided so as to be able to rotate relative to the take-up rotary shaft member 2 by applying an excessive rotation suppression force to the support ring 15 from the outside.
[0019]
Moreover, the core locking means 13 is made as follows. That is, an attachment comprising a cylindrical peripheral surface 15b concentric with the winding rotary shaft member 2 and a vertical wall surface 15c rising in the radial direction Y of the winding rotary shaft member 2 continuously to the cylindrical peripheral surface 15b. A step portion 22 is formed on the outer periphery of the support ring 15, and the slide ring 16 is extrapolated to the mounting step portion 22 so as to be movable in the direction of the center line x, and also supports the support ring 15. The vertical wall surface 15c located on the side where the bearing 21 is present (on the right side in FIG. 4) is formed as a terminal end on one side in the center line x direction so that the slide ring 16 is stopped at the position of the vertical wall surface 15c. There is no. As shown in FIG. 5, the slide ring 16 is provided with spring mounting holes 23 each having an opening on the side of the vertical wall surface 15 c at appropriate intervals in the circumferential direction. The slide ring 16 is urged toward the opposite side of the vertical wall surface 15c by a spring which is the urging means 24 arranged. In addition, a plurality of inclined portions 25 (three in the illustrated example) are provided on the outer periphery of the slide ring 16 at equal intervals in the circumferential direction, and the upper surface of each inclined portion 25 is the biasing direction of the spring 24. It is inclined downward toward.
[0020]
The outer peripheral ring 17 has a substantially cylindrical shape rotatably provided to the take-up rotary shaft member 2 by the pair of bearings 21 and 21 corresponding thereto, and is one bearing 21 on the right side in FIG. Is attached and fixed so that one peripheral edge portion of the outer peripheral ring 17 overlaps with an attachment portion of the support ring 15 located on the outer periphery of the outer peripheral ring 17 and the other peripheral edge portion of the outer peripheral ring 17 is one bearing 21 on the left side in FIG. It has been supported by. Since the outer ring 17 is connected to and integrated with the support ring 15 in this way, when the first piston 14 contacts the support ring 15 and rotates integrally with the winding rotary shaft member 2. In addition, the outer peripheral ring 17 is also removed from the winding rotary shaft member 2 under a state in which the first piston 14 and the support ring 15 slip through frictional force caused by contact between the first piston 14 and the support ring 15. Will rotate at a slightly slower speed.
[0021]
The outer peripheral ring 17 has a guide hole 26 in the radial direction Y formed as a through hole at a position corresponding to the inclined portion 25 of the slide ring 16. The locking claw 18 is inserted into the guide hole 26 so as to be movable in the radial direction Y within the take-up rotary shaft member 2, and the lower end surface of the locking claw 18 is shown in the drawing. Similarly to the inclined portion 25 in the slide ring 16, it is inclined downward in the urging direction of the spring 24 and placed on the inclined portion 25 so as to be movable relative to the inclined portion 25. That is, as the slide ring 16 moves in the center line x direction, the locking claw 18 is moved in the radial direction Y of the take-up rotary shaft member 2 while being guided by the guide hole 26. When 16 is pushed out in the biasing direction of the spring 24, the locking claw 18 protrudes outward from the outer peripheral ring 17, and when the core A is fitted on the winding portion 3, the core A is When the slide ring 16 is moved to the side of the vertical wall surface 15c by the action of the lock release portion 13 as will be described later, the lock claw 18 becomes the take-up rotating shaft. It can be moved in the center direction of the member 2.
[0022]
The locking claw urging means 19 moves the locking claw 18 toward the center of the take-up rotary shaft member 2 when the slide ring 16 moves toward the vertical wall surface 15c as described above. It is a spring ring that urges 18 to the center side of the winding rotary shaft member 2. A mounting groove 27 is formed in the outer ring 17 and the locking claw 18 so as to be continuous in the circumferential direction so that the spring ring 19 can be arranged around the outer ring 17. By locating the spring ring 19 in the groove 27, an urging force is always applied to the locking claw 18. 7 and 8 show a state in which the mounting groove 27 is provided on the outer peripheral ring 17 and the locking claw 18 in a circumferentially continuous state, and FIG. It shows the state when it is dead. The urging force of the spring ring 19 is adjusted so as not to change the position of the locking claw 18 when pushed up by the slide ring 16.
[0023]
As shown in FIGS. 4, 5, and 9, the lock release portion 13 is formed in association with the slide ring 16, and the lock release portion 13 faces the slide ring 16. 5 is located on the other bearing 21 side on the left side in FIG. 5 and is mounted around the take-up rotary shaft member 2, and is arranged at equal intervals in the circumferential direction in the cylinder block 28 ( 9) The second piston 30 is mounted on each of the plurality of second cylinders 29 whose center line is parallel to the center line x direction and is movable in the center line x direction. is there. Although six second cylinders 29 are shown in FIG. 9, any number such as eight to ten may be used.
[0024]
The cylinder block 28 penetrates outward from the second straight hole 9a so that air can be fed from the second air passage 9 of the winding rotary shaft member 2 to the second cylinder 29. It corresponds to the radial hole 9b, and is attached so as to be located on the outer side of the opening portion at the outer end of the second radial hole 9b. And the through-hole 32 which leads to each 2nd cylinder 29 in the contact of the ditch | groove provided around the inner peripheral surface of the cylinder block 28 and each 2nd cylinder 29 is formed, The 2nd straight hole 9a The pressure of the compressed air sent through the second radial hole 9b enters the second cylinder 29 through the through hole 32, and the pressure of the compressed air sent to the second cylinder 29 causes the second piston 30 protrudes toward the slide ring 16 side.
FIG. 9 shows the arrangement of the second cylinder 29 in the cylinder block 28. In this figure, 28a is attached with a cover 28b that secures a state in which the second piston 30 can move and closes the opening of each second cylinder 29. The screw hole for this is shown.
[0025]
The second piston 30 protrudes toward the slide ring 16 and comes into contact with the slide ring 16. The second piston 30 receives the pressure of the compressed air, and the second piston 30 makes the slide ring 16 an urging force of the spring 24. On the contrary, it is provided so as to be pushed in the direction opposite to the urging direction of the spring 24, and when the slide ring 16 is pushed and moved in the direction opposite to the urging direction of the spring 24, the inclined portion 25 also moves. Then, the locking claw 18 biased by the locking claw biasing means 19 descends so as to sink toward the center side of the take-up rotary shaft member 2 in a state of moving relative to the inclined portion 25. When the pawl 18 is in the locked state with the core A, the locked state is released.
[0026]
Further, a spring 33 is attached in relation to the second piston 30, and when the pressure of the compressed air fed from the second air passage 9 side is lowered by an artificial operation or the like, the second piston 30 is moved to the second cylinder 29. It is pushed back to the back side (left side in FIG. 5) and placed at the standby position. At this time, as will be described later, the slide ring 16 advances in the urging direction of the spring 24, and the locking claw 18 is pushed up in the radial direction Y of the winding rotary shaft member 2. The spring 33 does not have to be provided. In this case, when the pressure of the air from the second air passage 9 is reduced, the second piston 30 is urged by the urging force of the spring 24 that moves the slide ring 16. Is pushed back to the standby position.
[0027]
Next, a usage example and operation of the sheet take-up shaft device 1 having the above structure will be described.
When the winding core 3 is attached to the winding unit 3, compressed air whose pressure has been increased to a required pressure (for example, about 0.1 to 0.3 MPa) is sent into the second air passage 9. And this compressed air is sent into the 2nd cylinder 29 of the latch release part 13 via the 2nd radial hole 9b from the 2nd air path 9, and the 2nd piston 30 is extruded. The second piston 30 thus pushed out presses the slide ring 16 against the vertical wall surface 15 c of the support ring 15. As a result, the slide ring 16 is positioned against the vertical wall surface 15c, so that the locking claw 18 does not protrude outward from the height position of the outer peripheral surface of the outer peripheral ring 17, and the guide hole It will be in the state which fell in 26, and will be in the state which is easy to carry out external fitting mounting | wearing of the core A.
[0028]
After the winding core A is mounted, the pressure of the compressed air sent into the second air passage 9 is operated so that the air pressure in the second cylinder 29 at the unlocking portion 13 is lowered. The slide ring 16 moves in the biasing direction of the spring 24, and the locking claw 18 is pushed up outward in the radial direction Y of the winding rotary shaft member 2 by the inclined portion 25 that moves in the biasing direction. It protrudes outward from the inside of the guide hole 26 and comes into contact with the inner peripheral surface of the core A to lock the core A in a fixed manner.
[0029]
Compressed air (for example, having a pressure of about 0.5 to 1.5 MPa) whose pressure is controlled by a control device (not shown) in the first straight hole 8a in the first air passage 8 of the winding rotary shaft member 2. Since the pressure of the compressed air sent into the first straight hole 8a reaches the first piston 14 through the first radial hole 8b and presses the pressure receiving surface 14b thereof, the first piston 14 Is pushed upward in the radial direction Y of the winding rotary shaft member 2 and is pressed against the support ring 15 in a slidable state. Under this pressure contact state, the take-up rotary shaft member 2 is rotated by applying a rotational driving force T from the outside through the pulley 5c, and the support ring 15 and the outer ring 17 are related to the take-up rotation transmission. By means of the means 12, it rotates at a rotational speed at which an appropriate slip occurs with respect to the rotational speed of the winding rotary shaft member 2 (for example, a speed slower than the rotational speed of the winding rotary shaft member 2 by about 50 revolutions per minute). Then, the winding of the sheet is started. Note that the locking release portion 13 rotates integrally with the winding rotary shaft member 2.
[0030]
If the take-up tension becomes greater than a predetermined value during the take-up of the sheet, this is detected by a sensor (not shown) and a control device (not shown) supplies the first air passage 8 based on the detected information. The pressure is controlled so as to reduce the pressure of the compressed air, so that the force with which the first piston 14 presses the support ring 15 is reduced, and the frictional force between them is reduced. The rotational force transmitted by the means 12 is reduced, and the sheet is prevented from being wound under a state where an excessive tension is applied. On the contrary, if the take-up tension is reduced to a predetermined value or more during the take-up of the sheet, the sensor detects this, and a control device (not shown) enters the first air passage 8 based on the detected information. The pressure is controlled so as to increase the pressure of the compressed air being supplied. As a result, the force with which the first piston 14 presses the support ring 15 increases, and the frictional force between them increases. The transmission rotational force by the transmission means 12 is increased, and the sheet is prevented from being wound with a tension smaller than necessary. In this way, the pressure of the compressed air supplied into the first air passage 8 directly presses the pressure receiving surface 14b of the first piston 14 and the first piston 14 is displaced relative to the support ring 15 in a sliding contact. Therefore, the tension during the winding of the sheet can be adjusted to an arbitrary magnitude by controlling the pressure of the compressed air sent into the first air passage 8. Note that the tension of the sheet during winding of the sheet may be kept constant at all times, but actually, in order to prevent an excessive sheet winding pressure from acting on the core A after the winding is finished. As the take-up diameter to the winding core A increases, the sheet tension is gradually reduced. For example, the tension of the sheet at the end of winding is about 50% of that at the start of winding.
[0031]
When finishing the winding of the sheet, the application of the rotational driving force to the winding rotary shaft member 2 is stopped, the air pressure in the first air passage 8 is lowered, and the compressed air is further fed into the second air passage 9. The pressure of the compressed air sent into the second air passage 9 is transmitted into the second cylinder 29 to push and displace the second piston 30, and the displacement reverses the direction in which the slide ring 16 is biased by the spring 24. Move to. Thereby, the latching claw 18 is lowered toward the center side of the winding rotary shaft member 2, and the latching state of the winding core A is released. Thereafter, the core A around which the sheet is wound is shifted laterally with respect to the winding unit 3 and is removed from the sheet winding shaft device 1.
[0032]
【The invention's effect】
According to the present invention described above, the following effects can be obtained.
That is, according to the first aspect of the present invention, since the conventional rubber tube is not used, all the conventional disadvantages caused by the rubber tube can be eliminated. A rotational force of an arbitrary size can be stably transmitted to the unit 3 without being affected by the environmental temperature by a compact and simple structure.
[0033]
Further, according to the second aspect, the same effect as in the case of the first aspect of the invention can be obtained and the following effect can be obtained, that is, the first air passage 8 and the second air. Since the passage 9 is formed integrally with the thick portion of the winding rotary shaft member 2, the first air passage 8 and the second air passage 9 can be formed without complicating the internal structure of the winding rotary shaft member 2. Other related parts can be easily exchanged.
[0034]
Further, according to the third aspect of the present invention, the air passages 8 and 9 for independently applying air pressure to the winding rotation transmitting means 12 and the core locking means 13 are provided to rotate the winding rotary shaft member 2. It is easily formed without impairing the balance of time.
[Brief description of the drawings]
FIG. 1 is a side sectional view showing a main part of a sheet take-up shaft according to the present invention.
FIG. 2 is a right side view of the sheet winding shaft with part A omitted and B is a left side view.
FIGS. 3A and 3B are cross-sectional views showing a x1-x1 portion and B is a cross-sectional view showing a x2-x2 portion of the take-up rotation shaft member of the sheet take-up shaft.
FIG. 4 is a cross-sectional view showing a winding portion of the sheet winding shaft.
FIG. 5 is an enlarged cross-sectional view of the winding unit.
FIG. 6 is a cross-sectional view of a winding rotation transmission means portion of the sheet winding shaft.
FIG. 7 is an explanatory view showing an outer ring portion and a locking claw of the sheet winding shaft.
FIG. 8 is an explanatory view showing a locking claw of the sheet take-up shaft and an inclined portion of the slide ring.
FIG. 9 is a cross-sectional view showing a second cylinder portion of the sheet take-up shaft.
[Explanation of symbols]
2 Winding rotary shaft member
3 Winding part
8 First air passage
8a 1st straight hole
8b 1st radius hole (1st cylinder)
9 Second air passage
9a Second straight hole
9b Second radius hole
12 Winding rotation transmission means
13 winding core locking means
14 Pressure receiving member (first piston)
A winding core
p Specific angle range
x Center line

Claims

A pressure receiving member that is pressed by air pressure, and transmitting a rotational force having a magnitude related to a displacement force of the pressure receiving member from a winding rotary shaft member that is driven to rotate to a winding portion that is externally fitted to the winding rotary shaft member A winding rotation transmitting means, and a winding core locking means for setting the winding core fitted to the winding portion to a locked state or releasing the locked state as necessary. In the sheet take-up shaft device, an air path that is not related to the core locking means is formed in the thick portion of the take-up rotary shaft member, and the air path is generated outside the take-up rotary shaft member. A sheet take-up shaft device, wherein the compressed air is directly brought into contact with the pressure receiving member to apply air pressure.

A pressure receiving member that is pressed by air pressure, and transmitting a rotational force having a magnitude related to a displacement force of the pressure receiving member from a winding rotary shaft member that is driven to rotate to a winding portion that is externally fitted to the winding rotary shaft member A winding rotation transmitting means, and a winding core locking means that locks the winding portion and the core fitted around the winding portion and releases the locking state by applying air pressure; In the sheet take-up shaft device, the first air path and the second air path are formed in the thick portion of the take-up rotary shaft member in an independent state, and the first air path is formed by the take-up rotary shaft. Compressed air generated outside the member is brought into direct contact with the pressure receiving member to apply air pressure, and the second air path sends compressed air generated outside the winding rotary shaft member to the winding core member. A sheet winding shaft device, wherein the sheet winding shaft device is caused to flow into a stopping means.

A plurality of the winding portions are formed, and the first air path is a first straight hole formed at a center line portion of the winding rotary shaft member and a radial direction around the center line from the first straight plan hole The second air passage is within a range excluding the presence of the first air passage in the thick portion of the winding rotary shaft member, and a plurality of around the center line A second straight hole formed in each of the substantially equiangular locations and extending in the center line direction; and a second radial hole extending from the second straight hole in the radial direction around the center line. The sheet take-up shaft device according to claim 2.