JP2004209591A - Cutting edge installation structure for sheet cutting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutting edge installation structure for a sheet cutting device in which a cutting edge is simply and speedily attached/detached. <P>SOLUTION: A cutting edge fixing device 2 having a cutting edge 1 is fixed by a tightening bolt 5 to a front surface of a cutting edge elevation body 3 that is elevated. A grip 4 is provided at a front surface center of the cutting edge fixing device 2, through holes 16 for inserting a tightening bolt 5 are provided at the left and right of the grip 4, and screw holes for the tightening bolt 5 to be engaged are provided in the front surface of the cutting edge elevation body 3 corresponding to the through hole 16. A lock member 7 is provided to be pivotally attached at a base part to the cutting edge elevation body 3 positioned above the cutting edge fixing member 2, and locked at a tip over the cutting edge fixing device 2 to the tightening bolt 5. By operating the lock member 7 to rotate, it is movable to a lock position to be locked to the tightening bolt 5 to prohibit removal of the cutting edge fixing device 2, and a release position where it is released to be movable forward and backward of the cutting edge fixing device 2. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、セラミックグリーンシート等の柔軟なシートを切断するシート切断装置の切断刃装着構造に関する。
【０００２】
【従来の技術】
従来のセラミックグリーンシートのような柔軟なシートを切断するシート切断装置としては、例えば特許文献１或いは特許文献２に記載されたものが知られている。特許文献１に記載されたシート切断装置の切断刃装着構造は、カッターホルダの下面に形成した嵌合溝に切断刃を下側から挿入して取付ねじで固定する構造となっている。また、特許文献２に記載された切断刃装着構造は、替刃ホルダを滑動部から上方へ取り外して交換可能な構造となっている。
【０００３】
【特許文献１】
特開２０００−１１３５２０号公報
【特許文献２】
特開平０６−２９７３９３号公報
【０００４】
【発明が解決しようとする課題】
しかし、上記特許文献１に記載の構成は、切断刃を下側から挿入して取り付ける構造になっているので、切断刃の着脱を狭い空間で上下方向に行う必要があり、切断刃交換が面倒であったし、切断刃を損傷させたり作業者が手を切ったりすることがあった。
また、特許文献２に記載の構成は、替刃ホルダを滑動部から取り外し可能となっているが、替刃ホルダを装着した滑動部を左右に移動させて切断する構成であるし、滑動部を側方へ移動させてから替刃ホルダを上方へ取り外す構成であるため、シート切断装置に採用するのは難しい。
そこで、本発明は上記問題点に鑑み、簡易に且つ迅速に切断刃の着脱ができるシート切断装置の切断刃装着構造を提供することを課題とする。
【０００５】
【課題を解決するための手段】
上記課題を解決するため、請求項１の発明は、シートを切断する横長の切断刃を装着した切断刃固定具を、昇降動する切断刃昇降体に固定手段により連結固定して成るシート切断装置の切断刃装着構造であって、前記切断刃固定具は、前面に把手を有すると共に前記固定手段により背面が切断刃昇降体に密着して固定され、前記固定手段による固定を解除することで前方へ移動可能であり、前方へ移動させることで前記切断刃昇降体から離脱可能であることを特徴とする。このように構成することで、装着された切断刃固定具の上下左右に作業空間が無くても把手を掴んで手前に引き抜き操作することで簡易に且つ迅速に着脱操作できる。従って、切断刃の交換を無理なく実施できる。
【０００６】
請求項２の発明は、請求項１の発明において、固定手段が締付ボルトであり、切断刃昇降体前面の適宜位置にねじ孔を設けると共に、切断刃固定具の前記ねじ孔に対応する位置の前後方向に前記締付ボルトを貫通可能な貫通孔を設け、前記締付ボルトを切断刃昇降体に一端が連結された係止部材と前記貫通孔とを介して前記ねじ孔に螺入操作することで前記切断刃固定具を前記切断刃昇降体に着脱することを特徴とする。この構成により、締付ボルトを着脱することなく締め緩めることで切断刃固定具を着脱できるし、固定手段を簡易に且つ安価に構成できる。
【０００７】
請求項３の発明は、請求項２の発明において、係止部材は、切断刃固定具の上方に位置する切断刃昇降体に基部が軸着され、先端が切断刃固定具前面側の締付ボルトに係止し、締付ボルトに係止する係止位置と、係止を解除して切断刃固定具の前後移動を可能とした開放位置とに移動可能であることを特徴とする。この構成により、切断刃固定具の貫通孔が締付ボルトのボルト頭径に比べて十分大きくしてあっても確実に切断刃固定具を切断刃昇降体に連結固定できる。また、係止手段は回転操作により開放位置と係止位置とにワンタッチで移動操作でき、簡易な操作で済む。
【０００８】
請求項４の発明は、請求項１乃至３の何れかの発明において、切断刃昇降体に連結固定した切断刃固定具の背面に弾性圧接して、前記切断刃固定具に装着した切断刃を加熱する加熱器を備えてなることを特徴とする。この構成により、加熱器は切断刃固定具の離脱方向とは反対側に設けられるので、切断刃固定具は容易に着脱操作できるし、加熱器は弾性圧接されるので切断刃を確実に加熱でき、シート切断を良好にできる。
【０００９】
【発明の実施の形態】
以下、本発明を具体化した実施の形態を、図面に基づいて詳細に説明する。図１は本発明に係るシート切断装置の切断刃装着構造の実施形態の一例を示す正面説明図であり、図において、１は切断刃、２は切断刃１を装着する切断刃固定具、３はその切断刃固定具２を保持して切断刃１を昇降動させる切断刃昇降体、４は切断刃固定具２に固着されている把手、５は切断刃固定具２をシート切断装置の切断刃昇降体３に連結保持させる固定手段としての締付ボルト、６は切断刃昇降体３の一部を成し、切断刃固定具２の上下方向の位置決めのための位置決めレールで、切断刃昇降体３の前面に固着されている。そして７は締付ボルト５に係止して締付ボルト５と協働して切断刃固定具２を切断刃昇降体３に連結固定する固定手段としての係止部材で、特殊座金を意味している。
【００１０】
また、図２は切断刃固定具２を外した状態の図１の切断刃装着構造の平面説明図であり、９は切断刃昇降体３の側端部に全長に亘って設けられた案内レール、１０は切断装置のフレーム１１に設けられ、案内レール９に係合して切断刃昇降体３の昇降動を案内する長い案内子で、直動案内装置を構成している。１２は切断刃１を加熱する加熱器で、案内レール９の下端に取着されているグリス受５５に設けた板バネ２２に保持され、切断刃固定具２の下端部背面に弾力的に圧接されて切断刃１を加熱するようになっている。１３は切断するシートをワーク載置台３２上に固定するためのシート押さえ、１３ａはシート押さえ１３に形成され、切断刃１が切断動作時に通過する切断刃通過孔である。
【００１１】
切断刃１は左右に長く板状に形成され、その刃先を下に向けて切断刃固定具２に装着されている。切断刃固定具２は、図４のＢ−Ｂ線断面図に示すように、固定具本体２ａと挟持部材２ｂを備え、挟持部材２ｂにより切断刃１を挟持保持するよう形成され、ボルト１４ａにより挟持部材２ｂは固定具本体２ａに固着される。また、２ｃは切断刃固定具２を切断刃昇降体３に固定する際に位置決めレール６に係止させて上下方向の位置を位置決め操作する係止片であり、ボルト１４ｂにより固定具本体２ａに固着される。係止片２ｃには背面側に上下一対の張出部２ｅ，２ｆによって案内レール６に前側から嵌合する係合凹部２ｈが形成されている。尚、１５は切断刃固定具２の上下方向位置を位置決め操作する固定ねじで、係止片２ｃの張出部２ｅに螺合されている。固定ねじ１５は、ハンドル１５ａを回転操作して案内レール６を張出部２ｆとの間に狭持することにより切断刃固定具２の上下方向位置を位置決め固定するようになっている。
【００１２】
また、把手４は固定具本体２ａの前面中央に設けられている。固定具本体２ａには把手４の左右側の位置に切断刃昇降体３に固定するための締付ボルト５を貫通可能な貫通孔１６が設けられている。この貫通孔１６は、図３のＡ−Ａ線断面図に示すように、締付ボルト５を着脱することなく緩めるのみで切断刃固定具２を切断刃昇降体３に対して前方へ取り出すことができるように、締付ボルト５のボルト頭５ａの径より十分大きく形成されている。そして、切断刃昇降体３の貫通孔１６に対応する位置にはねじ孔１７が設けられ、締付ボルト５を前方から固定具本体２ａの貫通孔１６を通すと共にねじ孔１７に螺入し、係止部材７を係止させて締付ボルト５を締め付けることで固定具本体２ａを切断刃昇降体３に密着させて前後方向位置を位置決め固定するようになっている。即ち、切断刃固定具２は切断刃昇降体３に連結固定される。尚、締付ボルト５は他のボルトと共に六角穴付きボルトが使用されているが、把手付きボルトを用いても良い。
【００１３】
係止部材７は、基端部が位置決めレール６に軸着されて回動軸１９を構成し、先端に締付ボルト５に係止する係止部２０が形成されている。係止部２０は係止部材７の回動軸１９を中心とする下向き回動により締付ボルト５の首部５ｂを把持動作する位置に切り欠き凹部として形成されている。回転係止動作を詳しく説明すると、一対の係止部材７，７が締付ボルト５，５に係止した状態でハの字を形成するように、回動軸１９と締付ボルト５のねじ孔１７は配置され、係止部材７は互いの外方へ回転させることで自重で締付ボルト５に係止するよう構成されている。また、回動軸１９の略中間位置に保持突起２１が設けられ、係止部材７を持ち上げて逆回転させて、保持突起２１に当接させて開放状態を保持するよう構成されている。
このような係止部材７を設けることで、回転操作によるワンタッチ操作で、締付ボルト５に係止して切断刃固定具２を拘束して切断刃昇降体３に対する前方への移動を阻止する係止位置と、係止を解除して切断刃固定具２の前方への移動を許す開放位置に容易に移動操作できる。
【００１４】
加熱器１２は、図３に示すように、切断刃固定具２の切断刃１近傍の背部に接するよう設けられ、案内レール９の下端部に固着されているグリス受５５に設けられた板バネ２２の先端部に取り付けられ、板バネ２２の復元力により切断刃固定具２に圧接するよう設けられている。
【００１５】
次に、上記構成の切断刃固定具２の着脱操作を説明する。上述するように離脱操作は、締付ボルト５を僅かに緩めた後、係止部材７を持ち上げて回動し、開放位置で保持させる。そして、固定ねじ１５を緩めて把手４を持って切断刃固定具２を前方（図３に示す左方向）へ移動させる。この操作で締付ボルト５を取り外すことなく容易に且つ安全に切断刃固定具２を取り外すことができる。また、装着操作は逆に把手４を持って貫通孔１６に締付ボルト５が貫通するように、前方から押し込んで切断刃昇降体３に当接させた後、係止部材７を回動させて係止部２０を締付ボルト５に係止させる装着操作を行う。この操作で、切断刃固定具２は上部の係止片２ｃの係合凹部２ｈが位置決めレール６に嵌合して上下移動が係止され、また、係止部材７の係止部２０が締付ボルト５の首部５ｂに係止して締付ボルト頭５ａにより前後移動が係止されるため、締付ボルト５を締めなくても切断刃固定具２が落下することがない。従って、その後は把手４から手を放した状態で締付ボルト５を締めることで、切断刃固定具２を切断刃昇降体３に連結固定することができる。
【００１６】
このように、締付ボルト５を僅かに緩めて係止部材７を回動させた後、横長の切断刃を装着した切断刃固定具を把手４を持って前方に移動させて切断刃昇降体から離脱できるので、装着された切断刃固定具の上下左右に作業空間が無くても把手を掴んで手前に引き抜き操作することで容易に且つ迅速に着脱操作できる。従って、切断刃の交換をシート切断装置の外部の広い空間において治具を用いて高精度且つ安全に無理なく実施できる。また、固定手段を締付ボルトと係止部材によって構成しているので、締付ボルトを着脱することなく締付ボルトを僅かに緩めたり締めたりすることで、切断刃固定具を迅速に着脱することができる。
更に、係止部材により、切断刃固定具の締付ボルトを挿通する貫通孔がボルト頭径に比べて十分大きくても確実に切断刃固定具を切断刃昇降体に係止できる。また、係止部材の操作は、開放位置と係止位置とにワンタッチで移動操作でき、簡易な操作で済む。
また、加熱器は離脱方向とは反対側に設けられるので、切断刃固定具は加熱器を設けても容易に着脱操作できるし、加熱器は切断刃固定具に弾性圧接されるので、切断刃を確実に加熱でき、加熱することでシート切断を良好にできる。
【００１７】
図５，図６は、切断刃固定具１を切断刃昇降体３から取り外して切断刃交換治具２４に装着した状態を示している。図５は正面、図６は側面であり、図示するように、切断刃交換治具２４は、切断刃固定具２を載置する交換治具本体２４ａ、切断刃カバー２５、取っ手２６、位置決めレール２７、係止部材２８を備えている。切断刃固定具２を載置する載置部２９は、切断刃１の交換作業がし易いように傾斜面上に設けられ、取っ手２６は切断刃カバー２５に設けられている。
また、切断刃カバー２５は交換治具本体２４ａに、切断刃１を保護する保護位置と切断刃１が露出する開放位置に容易に移動できるよう軸着され、コイルバネ３０が双方の間に設置され、保護位置と開放位置の双方で状態を保持するよう形成されている。
【００１８】
このように、切断刃固定具の載置面を傾斜させて設けることで、ねじ締め等の作業がし易いし、位置決めレール２７及び係止部材２８を切断刃交換治具に備えることで、切断刃固定具２の位置決め固定をスムーズに行うことができる。更に、簡易に開放操作できる切断刃カバーを設けることで、ボルト締め作業の時には切断刃をカバーすることで、ボルト１４ａのボルト締めやボルト緩め作業等の際に切断刃に触れて怪我をするようなことがない。また、切断刃固定具を切断刃昇降体に対する着脱操作と同様の操作で切断刃交換治具に着脱操作できるので、切断刃交換作業する際に面倒な作業が発生せず、作業ミス発生の防止に効果的である。
尚、切断刃１の交換はボルト１４ａを緩めて切断刃１を左右方向へスライドさせることで交換でき、切断刃固定具２の挟持部材２ｂを取り外さずできるので、交換作業中に切断刃カバー２５を開放する必要がなく、安全に作業できる。
【００１９】
図７〜図９はシート切断装置の切断刃清掃装置を説明するための図で、図７はシート切断装置の要部正面図、図８は平面図、図９は側面図を示している。図に示すように、切断刃固定具２は中央上部に設けられ、３１は切断刃１を清掃する切断刃清掃装置であり、図では切断刃１の左右２カ所に設置され、昇降動する切断刃固定具２が上昇位置にある状態で切断刃を清掃動作するよう設けられている。尚、３２は切断するシートを載置するワーク載置台で、案内レール８０によって前後移動可能に案内されている移動台８１に９０度旋回可能に設けられている。図は左右方向に伸びた切断刃を平行に前後２枚設けた構成を示している。また、本願においては、切断刃昇降体３に切断刃固定具２を当て付ける切断刃固定具２の背面方向を後方とし、把手４を設ける表面方向を前方としている。従って、後の切断刃１の切断刃装着構造においては、シート切断構造の後方が切断刃昇降体３の前方を意味することになる。
【００２０】
切断刃清掃装置３１は左右対称に形成され、２枚の切断刃に対して前後夫々に一対設けられている。清掃動作するアーム部は、フレーム１１に支承されている枢軸３３ａと枢軸３３ａに固着した一対のアーム３３ｂ，３３ｃから構成され、曲がり部がフレーム１１に軸着されたＬ字型の第１アーム３３と、この第１アーム３３に連結されて先端に清掃具３５が設けられ、フレーム１１に設けた支承体６０によって左右方向へ摺動自在に保持されている第２アーム３４とから成っている。なお、清掃具３５は図３，図８に示すように切断刃１の刃先に摺接させる不織布やスポンジ等の円形の軟質の清掃部材６５を塵受皿６７内に一対設けてある。
【００２１】
また、第１アーム３３下部にはアーム部を駆動するシリンダ装置３６が配置され、シリンダ装置３６のピストンロッド３６ａが第１アーム３３の下側アーム３３ｃに連結され、ピストンロッド３６ａの伸縮動により清掃具３５が図示左右に移動して清掃動作する。その際、左右一対の清掃具３５は同時に動作して切断刃１の中央部まで清掃するようにしても良いし、僅かにタイミングをずらして切断刃１の中央部を越える位置まで清掃するようにしても良い。そして、シリンダ装置３６は、左右に１つずつ配置され、夫々前後一対のアーム部を駆動するようになっている。
【００２２】
このように、切断刃清掃装置３１を切断刃１の刃先に沿う方向へ進退移動可能に配設し、清掃具３５が切断刃の刃先を一時的に清掃して待避するようにし、清掃しないときに切断刃１の端部側の側方に位置するすようにしたので、清掃しない時に切断刃の前後側から清掃装置を無くすことができ、切断刃交換や点検を容易にできる。また、清掃具３５が両側から侵入して清掃するから、切断刃の刃先を短時間に清掃できるし、前後一対の切断刃の清掃具を１つの駆動装置により進退移動可能にしたから、簡易な構成にできる。
【００２３】
また、図７，図８において、３９は切断刃高さを補正する補正装置を構成する投光器、４０は同様に補正装置を構成する受光器であり、前後に設けられた２つの第２アーム３４，３４の一方の先端部に切断刃高さ測定用のレーザ光を発する投光器３９を設け、他方の先端部にその光を受光する受光器４０を設け、切断刃１の刃先高さを正確に測定できるようにしてある。
切断刃１は、交換したり、摩耗したり、研磨したり、或いは切断作業によりボールねじ等が変形した場合に、刃先位置が変化して切断刃を昇降動作させるサーボモータ（図示せず）の回転制御によって下降される刃先高さが所定位置に正確に位置されなくなる。そのため、サーボモータの回転制御による切断刃１の刃先高さが所定位置に正確に位置されるようにサーボモータの回転制御装置のデータを補正する必要がある。そこで、このようなシート切断装置の切断刃１高さを補正する補正装置が必要となる。特に、切断刃高さ補正装置は、常に切断刃先端を所定の高さに高精度で降下させ、シートを常に均一な厚み量だけ残してハーフ切断する場合に必要である。
【００２４】
投光器３９及び受光器４０は、切断刃１高さ測定ゲージ（図示せず）がレーザ光を半分程度遮る高さ位置、例えばワーク載置台３２の上面（サーボモータ回転によって切断刃刃先高さがワーク載置台３２上面高さになる原点位置）から所定量（例えば２０ｍｍ）上方の位置に、切断刃１の刃先軌跡に対して一方側から他方側へレーザ光を投受光するよう正確に設置してある。
尚、切断刃１先端の基準高さ位置のデータを測定するための切断刃高さ測定ゲージは、所望の場所に保管しておき、測定する際に例えばワーク載置台３２に載置して使用する。
【００２５】
切断刃１を設置して作業を開始する場合、まず切断刃高さ測定ゲージ（例えば門形形状で、上壁によって遮蔽する）をレーザ光を半分程度遮るようにワーク載置台３２上に置き、そのとき受光器４０が受光する受光量の遮断割合によって、切断刃１の刃先測定のための基準高さを算定しておく。次に、サーボモータ回転によって切断刃刃先のワーク載置台３２上面から２０ｍｍ上方になる位置に移動させ、切断刃１の刃先がレーザ光を遮蔽するようにする。このとき、切断刃１の刃先がレーザ光を遮蔽する受光量の遮蔽割合を測定し、その遮蔽割合によって算定した切断刃１の刃先高さデータが基準高さに一致していれば、切断刃１の刃先高さが正確であるが、僅かに相違していればサーボモータを僅かに回転制御して一致するように修正し、その修正後の制御データが切断刃刃先の基準高さになるように補正する。
【００２６】
従って、その後はサーボモータの回転制御によって切断刃１の刃先を正確な位置に移動（下降）させることができる。切断刃高さ測定ゲージによる測定は最初だけ或いは移設後などに行えば良いが、基準高さに対する補正は、切断刃１を交換したり、摩耗したり、研磨したり、或いは切断作業によりボールねじ等が熱変形した場合等に行う。
尚、基準高さの測定は、切断刃高さ測定ゲージを用いた場合のレーザ光の遮蔽割合を記憶しておき、その遮蔽割合になるように切断刃１の刃先を移動して、そのときのサーボモータの回転制御データを基準高さデータとし、以後も切断刃高さ測定ゲージによる遮蔽割合になるように切断刃刃先を移動して、そのときのサーボモータの回転制御データを基準高さデータとなるように補正しても良い。
【００２７】
このように、切断刃高さ補正装置を設けることで、切断刃を交換したり、切断刃が摩耗したり、研磨したり、切断作業によりボールねじ等が熱変形した場合でも、切断刃先端を所定高さに移動させ、切断刃刃先が遮蔽する受光器の受光量の遮蔽割合を測定して基準高さと一致するように補正することができ、その結果、切断刃刃先を正確に下降でき、シートを常に均一な厚み量だけ残して正確にハーフ切断できる。
【００２８】
尚、上記実施形態の投光器及び受光器は、位置精度を安定させて高精度にするために双方ともシート切断装置のフレームに固定的に設けると良い。この場合、切断刃１の交換作業の邪魔にならないように図２に示す対角線位置に投光器３９ｅと受光器４０ｅを固定的に設け、切断刃１の移動軌跡を斜めに横切るようにする。こうすることで、投光器３９ｅから受光器４０ｅへ投光した状態で切断刃１を上端から下降させ、切断刃１が投光量を所定割合遮断したときの切断刃１の高さを基準高さとすることができる。
また、上記実施形態では固定手段を締付ボルト５として、切断刃固定具２を組み付けた前方から挿入操作して固着操作しているが、貫通孔１６より大きくて切断刃昇降体３に紐等の線材によって連結されている係止部材としての割り座金を締付ボルト５に抜き差しすることで、係止部材７の働きをさせることができる。
【００２９】
【発明の効果】
以上詳述したように、本発明によれば、横長の切断刃を装着した切断刃固定具を前方に移動させて切断刃昇降体から離脱できるので、装着された切断刃固定具の上下左右に作業空間が無くても把手を掴んで手前に引き抜き操作することで簡易に且つ迅速に着脱操作できる。従って、切断刃の交換を容易に実施できる。
また、切断刃固定具の貫通孔に締付ボルトを挿通させて切断刃昇降体のねじ孔に螺合しているので、締付ボルトに係止部材を係脱させることで、締付ボルトを着脱することなく切断刃固定具を簡易迅速に固定でき、取り外しも締付ボルトを螺合したまま簡易迅速に行うことができる。
更に、切断刃昇降体に切断刃固定具の背面に弾性圧接する加熱器を備えるので、切断刃固定具を前方から後方へ移動させて装着することで、加熱器に圧接されて確実に加熱することができる。
【図面の簡単な説明】
【図１】本発明の実施形態の一例を示すシート切断装置の切断刃装着構造を示す正面説明図である。
【図２】図１の切断刃固定具を省略して示す水平断面図である。
【図３】図１のＡ−Ａ線断面図である。
【図４】図１のＢ−Ｂ線断面図である。
【図５】図１の切断刃固定具を切断刃交換のための治具にセットした状態の正面図である。
【図６】図５の側面図である。
【図７】シート切断装置の切断刃清掃機構を示す正面説明図である。
【図８】図７の水平断面図である。
【図９】図７の縦断面図である。
【符号の説明】
１・・切断刃、２・・切断刃固定具、３・・切断刃昇降体、４・・把手、５・・締付ボルト、７・・係止部材、１１・・フレーム、１２・・加熱器、１６・・貫通孔、１７・・ねじ孔、１９・・回動軸、２０・・係止部、２２・・板バネ。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a cutting blade mounting structure of a sheet cutting device for cutting a flexible sheet such as a ceramic green sheet.
[0002]
[Prior art]
2. Description of the Related Art As a conventional sheet cutting apparatus for cutting a flexible sheet such as a ceramic green sheet, for example, those described in Patent Document 1 or Patent Document 2 are known. The cutting blade mounting structure of the sheet cutting device described in Patent Literature 1 has a structure in which a cutting blade is inserted from below into a fitting groove formed on a lower surface of a cutter holder and fixed with a mounting screw. Further, the cutting blade mounting structure described in Patent Literature 2 has a structure in which the replacement blade holder can be removed upward from the sliding portion and replaced.
[0003]
[Patent Document 1]
JP 2000-113520 A [Patent Document 2]
Japanese Patent Application Laid-Open No. 06-297393
[Problems to be solved by the invention]
However, since the configuration described in Patent Literature 1 has a structure in which the cutting blade is inserted and attached from below, it is necessary to vertically attach and detach the cutting blade in a small space, and replacement of the cutting blade is troublesome. In some cases, the cutting blade was damaged or the operator cut his hand.
Further, the configuration described in Patent Literature 2 is configured such that the blade holder can be removed from the sliding portion, but the sliding portion on which the blade holder is mounted is moved left and right to cut the sliding portion. Since the blade holder is removed upward after being moved to the side, it is difficult to adopt it in the sheet cutting device.
In view of the above problems, an object of the present invention is to provide a cutting blade mounting structure of a sheet cutting device in which a cutting blade can be easily and quickly attached and detached.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, a first aspect of the present invention is a sheet cutting apparatus in which a cutting blade fixing tool equipped with a horizontally long cutting blade for cutting a sheet is fixedly connected to a vertically moving cutting blade elevating body by fixing means. The cutting blade mounting structure of the above, wherein the cutting blade fixture has a handle on the front surface, and the back surface is fixed in close contact with the cutting blade elevating body by the fixing means, and is released by releasing the fixing by the fixing means. , And can be separated from the cutting blade elevating body by moving it forward. With this configuration, even if there is no working space in the upper, lower, left, and right sides of the mounted cutting blade fixture, the user can easily and quickly perform the attaching / detaching operation by grasping the handle and pulling it toward the user. Therefore, the replacement of the cutting blade can be performed without difficulty.
[0006]
According to a second aspect of the present invention, in the first aspect, the fixing means is a tightening bolt, and a screw hole is provided at an appropriate position on the front surface of the cutting blade elevating body, and a position corresponding to the screw hole of the cutting blade fixing tool. A through-hole through which the tightening bolt can pass is provided in the front-rear direction, and the tightening bolt is screwed into the screw hole via the locking member having one end connected to a cutting blade elevating body and the through-hole. By doing so, the cutting blade fixture is attached to and detached from the cutting blade elevating body. With this configuration, the cutting blade fixture can be attached and detached by loosening the fastening bolt without attaching and detaching it, and the fixing means can be configured simply and inexpensively.
[0007]
According to a third aspect of the present invention, in the invention of the second aspect, the locking member has a base portion pivotally attached to a cutting blade elevating body located above the cutting blade fixing device, and a front end of which is fastened to the front side of the cutting blade fixing device. It is characterized by being movable to a locking position where it is locked to a bolt and is locked to a tightening bolt, and to an open position where the locking is released and the cutting blade fixture can be moved back and forth. With this configuration, even if the through hole of the cutting blade fixture is sufficiently larger than the bolt head diameter of the tightening bolt, the cutting blade fixture can be reliably connected to and fixed to the cutting blade elevating body. Further, the locking means can be moved by one operation between the open position and the locked position by a rotation operation, so that a simple operation is sufficient.
[0008]
According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, the cutting blade attached to the cutting blade fixture is elastically pressed against a back surface of the cutting blade fixture fixedly connected to the cutting blade elevating body. It is characterized by comprising a heater for heating. With this configuration, the heater is provided on the side opposite to the detaching direction of the cutting blade fixture, so that the cutting blade fixture can be easily attached and detached, and the heater is elastically pressed so that the cutting blade can be reliably heated. The sheet can be cut well.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory front view showing an example of an embodiment of a cutting blade mounting structure of a sheet cutting device according to the present invention. In the drawing, reference numeral 1 denotes a cutting blade, 2 denotes a cutting blade fixture to which the cutting blade 1 is mounted, 3 Is a cutting blade elevating body that holds the cutting blade fixing tool 2 and moves the cutting blade 1 up and down, 4 is a handle fixed to the cutting blade fixing tool 2, and 5 is cutting the cutting blade fixing tool 2 by a sheet cutting device. A tightening bolt 6 as a fixing means for connecting and holding the blade elevating body 3 is a part of the cutting blade elevating body 3, and is a positioning rail for positioning the cutting blade fixture 2 in the vertical direction. It is fixed to the front surface of the body 3. Reference numeral 7 denotes a locking member which is a fixing means which is fixed to the fastening bolt 5 to connect and fix the cutting blade fixture 2 to the cutting blade elevating body 3 in cooperation with the fastening bolt 5, which means a special washer. ing.
[0010]
FIG. 2 is an explanatory plan view of the cutting blade mounting structure of FIG. 1 with the cutting blade fixture 2 removed, and 9 is a guide rail provided on the side end of the cutting blade elevating body 3 over the entire length. Reference numeral 10 denotes a long guide provided on the frame 11 of the cutting device and engaged with the guide rail 9 to guide the lifting and lowering movement of the cutting blade lifting / lowering body 3, which constitutes a linear guide device. Reference numeral 12 denotes a heater for heating the cutting blade 1, which is held by a leaf spring 22 provided on a grease receiver 55 attached to the lower end of the guide rail 9, and elastically presses against the back of the lower end of the cutting blade fixture 2. Then, the cutting blade 1 is heated. Reference numeral 13 denotes a sheet press for fixing the sheet to be cut on the work mounting table 32, and reference numeral 13a denotes a cutting blade passage hole formed in the sheet press 13 and through which the cutting blade 1 passes during a cutting operation.
[0011]
The cutting blade 1 is formed in a plate shape that is long in the left and right directions, and is attached to the cutting blade fixture 2 with its cutting edge facing downward. As shown in the sectional view taken along the line BB of FIG. 4, the cutting blade fixture 2 includes a fixture main body 2a and a clamping member 2b, and is formed so as to clamp and hold the cutting blade 1 with the clamping member 2b, and with bolts 14a. The holding member 2b is fixed to the fixture body 2a. Reference numeral 2c denotes a locking piece which is used to lock the cutting blade fixture 2 to the cutting blade elevating body 3 and to perform a positioning operation in the vertical direction by locking the positioning rail 6 to the fixing tool main body 2a by a bolt 14b. It is fixed. The engaging piece 2c has a pair of upper and lower projecting portions 2e and 2f formed on the rear side thereof to form an engaging concave portion 2h fitted to the guide rail 6 from the front side. Reference numeral 15 denotes a fixing screw for positioning the cutting blade fixture 2 in the vertical direction, and is screwed to the projecting portion 2e of the locking piece 2c. The fixing screw 15 rotationally operates the handle 15a to hold the guide rail 6 between the extension 2f and thereby position and fix the cutting blade fixture 2 in the vertical direction.
[0012]
The handle 4 is provided at the center of the front surface of the fixture body 2a. The fixing tool main body 2a is provided with through holes 16 at positions on the left and right sides of the handle 4 through which a tightening bolt 5 for fixing to the cutting blade elevating body 3 can pass. As shown in the cross-sectional view taken along the line AA of FIG. 3, the through-hole 16 allows the cutting blade fixture 2 to be taken out of the cutting blade elevating body 3 only by loosening the fastening bolt 5 without detaching it. Is formed sufficiently larger than the diameter of the bolt head 5a of the tightening bolt 5. A screw hole 17 is provided at a position corresponding to the through hole 16 of the cutting blade elevating body 3, and the fastening bolt 5 is passed through the through hole 16 of the fixture body 2a from the front and screwed into the screw hole 17. By locking the locking member 7 and tightening the tightening bolt 5, the fixing tool main body 2a is brought into close contact with the cutting blade elevating body 3 to position and fix the position in the front-rear direction. That is, the cutting blade fixture 2 is connected and fixed to the cutting blade elevating body 3. In addition, the bolt with a hexagonal hole is used for the fastening bolt 5 together with other bolts, but a bolt with a handle may be used.
[0013]
The locking member 7 has a base end portion pivotally mounted on the positioning rail 6 to form a rotation shaft 19, and a locking portion 20 for locking to the tightening bolt 5 is formed at the distal end. The locking portion 20 is formed as a notched concave portion at a position where the locking member 7 can grip the neck portion 5b of the tightening bolt 5 by a downward rotation about the rotation shaft 19 as a center. The rotation locking operation will be described in detail. When the pair of locking members 7, 7 are locked to the tightening bolts 5, 5, a screw between the rotating shaft 19 and the tightening bolt 5 is formed. The holes 17 are arranged, and the locking members 7 are configured to be locked to the tightening bolts 5 by their own weight by rotating them outward. Further, a holding projection 21 is provided at a substantially intermediate position of the rotating shaft 19, and the locking member 7 is lifted and rotated in the reverse direction so as to abut on the holding projection 21 to hold the open state.
By providing such a locking member 7, by one-touch operation by a rotation operation, the cutting blade fixing tool 2 is locked by being locked to the tightening bolt 5 to prevent the cutting blade elevating body 3 from moving forward. It can be easily moved to a locking position and an open position where the locking is released and the cutting blade fixture 2 is allowed to move forward.
[0014]
As shown in FIG. 3, the heater 12 is provided so as to be in contact with a back portion of the cutting blade fixture 2 near the cutting blade 1, and is provided on a grease receiver 55 fixed to a lower end portion of the guide rail 9. The leaf spring 22 is attached to the tip of the cutting blade 22 and is pressed against the cutting blade fixture 2 by the restoring force of the leaf spring 22.
[0015]
Next, an operation of attaching and detaching the cutting blade fixture 2 having the above configuration will be described. As described above, in the detaching operation, after slightly loosening the tightening bolt 5, the locking member 7 is lifted and rotated to be held at the open position. Then, the fixing screw 15 is loosened, and the cutting blade fixture 2 is moved forward (to the left as shown in FIG. 3) by holding the handle 4. With this operation, the cutting blade fixture 2 can be easily and safely removed without removing the fastening bolts 5. On the contrary, the mounting operation is carried out by holding the handle 4, pushing the fastening bolt 5 from the front so as to penetrate the through-hole 16, and abutting the cutting blade elevating body 3, and then rotating the locking member 7. A mounting operation for locking the locking portion 20 to the fastening bolt 5 is performed. By this operation, the cutting blade fixture 2 is locked in the vertical movement by the engagement recess 2h of the upper locking piece 2c being fitted to the positioning rail 6, and the locking portion 20 of the locking member 7 is tightened. Since the front and rear movement is locked by the neck 5b of the mounting bolt 5 and locked by the tightening bolt head 5a, the cutting blade fixture 2 does not drop even if the tightening bolt 5 is not tightened. Therefore, the cutting blade fixture 2 can be connected and fixed to the cutting blade elevating body 3 by tightening the tightening bolts 5 with the handle 4 released.
[0016]
As described above, after the tightening bolt 5 is slightly loosened and the locking member 7 is rotated, the cutting blade fixing device equipped with the horizontally long cutting blade is moved forward with the handle 4 so that the cutting blade elevating body is moved. Therefore, even if there is no working space above, below, left and right of the mounted cutting blade fixture, it is possible to easily and quickly perform the attaching / detaching operation by grasping the handle and pulling the handle forward. Therefore, the replacement of the cutting blade can be performed with high precision and safety without difficulty using a jig in a wide space outside the sheet cutting device. Also, since the fixing means is constituted by the fastening bolt and the locking member, the cutting blade fixing tool can be quickly attached and detached by slightly loosening or tightening the fastening bolt without attaching and detaching the fastening bolt. be able to.
Furthermore, the locking member can reliably lock the cutting blade fixture to the cutting blade elevating body even if the through hole for inserting the tightening bolt of the cutting blade fixture is sufficiently larger than the bolt head diameter. In addition, the operation of the locking member can be moved with one touch between the open position and the locked position, so that a simple operation is sufficient.
In addition, since the heater is provided on the side opposite to the detaching direction, the cutting blade fixture can be easily attached and detached even if a heater is provided, and the heater is elastically pressed against the cutting blade fixture, so the cutting blade is fixed. Can be reliably heated, and the sheet can be cut well by heating.
[0017]
FIGS. 5 and 6 show a state in which the cutting blade fixture 1 is detached from the cutting blade elevating body 3 and attached to the cutting blade replacement jig 24. FIG. 5 is a front view, and FIG. 6 is a side view. As shown, the cutting blade replacement jig 24 includes a replacement jig main body 24a on which the cutting blade fixture 2 is placed, a cutting blade cover 25, a handle 26, and a positioning rail. 27, a locking member 28. A mounting portion 29 on which the cutting blade fixture 2 is mounted is provided on an inclined surface so that the cutting blade 1 can be easily replaced, and a handle 26 is provided on the cutting blade cover 25.
Further, the cutting blade cover 25 is axially mounted on the replacement jig main body 24a so as to be easily moved to a protection position for protecting the cutting blade 1 and an open position where the cutting blade 1 is exposed, and a coil spring 30 is provided between the two. , And is formed so as to maintain the state in both the protection position and the open position.
[0018]
As described above, the mounting surface of the cutting blade fixing device is provided at an inclined position, so that operations such as screw tightening are easy, and the positioning rail 27 and the locking member 28 are provided in the cutting blade replacement jig, so that cutting is performed. The positioning and fixing of the blade fixing tool 2 can be performed smoothly. Further, by providing a cutting blade cover that can be easily opened, the cutting blade is covered during the bolting work, so that the cutting blade can be injured by touching the cutting blade at the time of bolting or loosening the bolt 14a. There is nothing. In addition, since the cutting blade fixing tool can be attached to and detached from the cutting blade replacement jig by the same operation as the attaching and detaching operation to the cutting blade elevating body, troublesome work does not occur when replacing the cutting blade, and the occurrence of work errors is prevented. It is effective for
The cutting blade 1 can be replaced by loosening the bolt 14a and sliding the cutting blade 1 in the left and right direction, and without removing the holding member 2b of the cutting blade fixture 2, so that the cutting blade cover 25 can be replaced during the replacement operation. There is no need to open the door, so you can work safely.
[0019]
7 to 9 are views for explaining a cutting blade cleaning device of the sheet cutting device. FIG. 7 is a front view of a main part of the sheet cutting device, FIG. 8 is a plan view, and FIG. 9 is a side view. As shown in the figure, a cutting blade fixture 2 is provided at the upper center, and 31 is a cutting blade cleaning device that cleans the cutting blade 1. The blade fixing device 2 is provided to perform a cleaning operation on the cutting blade in a state where the blade fixing device 2 is at the raised position. Reference numeral 32 denotes a work mounting table on which a sheet to be cut is mounted. The work mounting table 32 is rotatable by 90 degrees on a movable table 81 guided by a guide rail 80 so as to be movable back and forth. The figure shows a configuration in which two front and rear cutting blades extending in the left-right direction are provided in parallel. Further, in the present application, the back direction of the cutting blade fixture 2 for applying the cutting blade fixture 2 to the cutting blade elevating body 3 is defined as rearward, and the surface direction on which the handle 4 is provided is defined as forward. Therefore, in the later cutting blade mounting structure of the cutting blade 1, the back of the sheet cutting structure means the front of the cutting blade elevating body 3.
[0020]
The cutting blade cleaning devices 31 are formed symmetrically, and a pair of front and rear cutting blade cleaning devices are provided for two cutting blades. The cleaning arm includes a pivot 33a supported by the frame 11 and a pair of arms 33b and 33c fixed to the pivot 33a. The L-shaped first arm 33 has a bent portion pivotally attached to the frame 11. And a second arm 34 connected to the first arm 33 and provided with a cleaning tool 35 at the distal end, and slidably held in the left and right direction by a support body 60 provided on the frame 11. As shown in FIGS. 3 and 8, the cleaning tool 35 has a pair of circular soft cleaning members 65 such as a nonwoven fabric and a sponge which are slidably brought into contact with the cutting edge of the cutting blade 1 in a dust tray 67.
[0021]
Further, a cylinder device 36 for driving the arm portion is disposed below the first arm 33, and a piston rod 36a of the cylinder device 36 is connected to the lower arm 33c of the first arm 33, and the piston rod 36a expands and contracts for cleaning. The tool 35 moves left and right in the figure to perform a cleaning operation. At this time, the pair of left and right cleaning tools 35 may be operated simultaneously to clean the central portion of the cutting blade 1, or may be slightly shifted to clean the position beyond the central portion of the cutting blade 1. May be. The cylinder devices 36 are arranged one by one on the left and right sides, and each drive a pair of front and rear arms.
[0022]
As described above, the cutting blade cleaning device 31 is disposed so as to be able to advance and retreat in the direction along the cutting edge of the cutting blade 1, and the cleaning tool 35 temporarily cleans the cutting edge of the cutting blade to evacuate. The cleaning device is located on the side of the end portion of the cutting blade 1 so that the cleaning device can be eliminated from the front and rear sides of the cutting blade when cleaning is not performed, and replacement and inspection of the cutting blade can be facilitated. Also, since the cleaning tool 35 enters from both sides and cleans, the cutting edge of the cutting blade can be cleaned in a short time, and the cleaning tool of the pair of front and rear cutting blades can be moved forward and backward by one driving device, so that it is simple. Can be configured.
[0023]
7 and 8, reference numeral 39 denotes a light projector constituting a correction device for correcting the height of the cutting blade, and reference numeral 40 denotes a light receiver similarly constituting a correction device, and two second arms 34 provided in front and rear. , 34 is provided with a light emitter 39 for emitting a laser beam for measuring the height of the cutting blade, and a light receiver 40 for receiving the light is provided at the other distal end, so that the cutting edge height of the cutting blade 1 can be accurately determined. It can be measured.
When the cutting blade 1 is replaced, worn, polished, or a ball screw or the like is deformed by the cutting operation, the position of the cutting edge is changed and a servomotor (not shown) for raising and lowering the cutting blade is operated. The cutting edge height lowered by the rotation control is not accurately positioned at a predetermined position. Therefore, it is necessary to correct the data of the rotation control device of the servomotor so that the cutting edge height of the cutting blade 1 by the rotation control of the servomotor is accurately positioned at a predetermined position. Therefore, a correction device for correcting the height of the cutting blade 1 of such a sheet cutting device is required. In particular, the cutting blade height correction device is necessary when the cutting blade tip is always lowered to a predetermined height with high precision, and the sheet is always half-cut while leaving a uniform thickness.
[0024]
The light emitter 39 and the light receiver 40 are positioned at a height where the cutting blade 1 height measuring gauge (not shown) blocks the laser light by about half, for example, the upper surface of the work table 32 (the height of the cutting blade edge is increased by the rotation of the servomotor. At a position above a predetermined amount (for example, 20 mm) from the origin position at which the height of the mounting table 32 is equal to the height of the upper surface of the mounting table 32, the laser beam is accurately installed so as to project and receive laser light from one side to the other side with respect to the cutting edge trajectory of the cutting blade 1. is there.
The cutting blade height measuring gauge for measuring the data of the reference height position of the tip of the cutting blade 1 is stored in a desired place, and is used, for example, by mounting it on the work mounting table 32 when measuring. I do.
[0025]
When the work is started by installing the cutting blade 1, first, a cutting blade height measuring gauge (for example, a gate shape, which is shielded by an upper wall) is placed on the work mounting table 32 so as to block the laser light by about half. At this time, the reference height for measuring the cutting edge of the cutting blade 1 is calculated based on the cutoff ratio of the amount of light received by the light receiver 40. Next, the cutting blade 1 is moved to a position 20 mm above the upper surface of the work table 32 by the rotation of the servomotor so that the cutting blade 1 blocks the laser beam. At this time, the cutting ratio of the amount of light received by the cutting edge of the cutting blade 1 to block the laser beam is measured, and if the cutting edge height data of the cutting blade 1 calculated based on the shielding ratio matches the reference height, the cutting edge is determined. If the height of the cutting edge is accurate, but slightly different, the servomotor is slightly controlled to correct the rotation so that they match, and the corrected control data becomes the reference height of the cutting edge. Correction as follows.
[0026]
Accordingly, thereafter, the cutting edge of the cutting blade 1 can be moved (down) to an accurate position by the rotation control of the servomotor. The measurement with the cutting blade height measuring gauge may be performed only at the beginning or after relocation, but the correction to the reference height is performed by replacing the cutting blade 1, wearing, polishing, or cutting the ball screw. This is performed when the thermal deformation of the device occurs.
In the measurement of the reference height, the shielding ratio of the laser beam when the cutting blade height measurement gauge is used is stored, and the cutting edge of the cutting blade 1 is moved so as to have the shielding ratio. The rotation control data of the servo motor is used as the reference height data.Then, the cutting edge is moved so that the cutting ratio becomes the shielding ratio by the cutting blade height measurement gauge, and the rotation control data of the servo motor at that time is used as the reference height. The correction may be made to be data.
[0027]
Thus, by providing the cutting blade height correction device, even if the cutting blade is replaced, the cutting blade is worn out, polished, or the ball screw or the like is thermally deformed by the cutting operation, the cutting blade tip can be removed. Moved to a predetermined height, the cutting edge can be corrected to match the reference height by measuring the shielding ratio of the amount of light received by the light receiver that the cutting edge shields, as a result, the cutting edge can be lowered accurately, Half-cutting can be performed accurately while always leaving the sheet with a uniform thickness.
[0028]
It is preferable that both the light projector and the light receiver of the above embodiment are fixedly provided on the frame of the sheet cutting device in order to stabilize the positional accuracy and increase the accuracy. In this case, the light emitter 39e and the light receiver 40e are fixedly provided at diagonal positions shown in FIG. 2 so as not to hinder the replacement operation of the cutting blade 1, and obliquely cross the movement locus of the cutting blade 1. By doing so, the cutting blade 1 is lowered from the upper end in a state where light is emitted from the light projector 39e to the light receiver 40e, and the height of the cutting blade 1 when the cutting blade 1 interrupts a predetermined amount of light is set as the reference height. be able to.
In the above embodiment, the fixing means is the fastening bolt 5 and the fixing operation is performed by inserting and fixing the cutting blade fixing tool 2 from the front where the cutting blade fixing tool 2 is assembled. The function of the locking member 7 can be performed by inserting and removing the split washer as the locking member connected by the wire material with the tightening bolt 5.
[0029]
【The invention's effect】
As described in detail above, according to the present invention, the cutting blade fixing tool equipped with the horizontally long cutting blade can be moved forward and detached from the cutting blade elevating body, so that it can be moved up, down, left and right of the mounted cutting blade fixing tool. Even if there is no working space, it is possible to easily and quickly perform the attaching / detaching operation by grasping the handle and pulling it toward the user. Therefore, the cutting blade can be easily replaced.
In addition, since the tightening bolt is inserted into the through hole of the cutting blade fixture and is screwed into the screw hole of the cutting blade elevating body, the locking member is disengaged from the tightening bolt so that the tightening bolt is removed. The cutting blade fixture can be easily and quickly fixed without being detached, and can be easily and quickly removed with the fastening bolt screwed.
Furthermore, since the cutting blade elevating body is provided with a heater that elastically presses against the back surface of the cutting blade fixture, the cutting blade fixture is moved from the front to the rear, and is mounted, so that the cutting blade fixture is pressed against the heater and reliably heated. be able to.
[Brief description of the drawings]
FIG. 1 is an explanatory front view showing a cutting blade mounting structure of a sheet cutting device showing an example of an embodiment of the present invention.
FIG. 2 is a horizontal sectional view showing the cutting blade fixing device of FIG.
FIG. 3 is a sectional view taken along line AA of FIG. 1;
FIG. 4 is a sectional view taken along line BB of FIG. 1;
FIG. 5 is a front view showing a state where the cutting blade fixing device of FIG. 1 is set on a jig for exchanging the cutting blade.
FIG. 6 is a side view of FIG. 5;
FIG. 7 is an explanatory front view showing a cutting blade cleaning mechanism of the sheet cutting device.
FIG. 8 is a horizontal sectional view of FIG. 7;
FIG. 9 is a longitudinal sectional view of FIG. 7;
[Explanation of symbols]
1. Cutting blade, 2. Cutting blade fixture, 3. Cutting blade elevating body, 4. Handle, 5. Bolt, 7. Bolt, 7. Locking member, 11. Frame, 12. Heating Container, 16 through hole, 17 screw hole, 19 rotating shaft, 20 locking part, 22 leaf spring.

Claims (4)

シートを切断する横長の切断刃を装着した切断刃固定具を、昇降動する切断刃昇降体に固定手段により連結固定して成るシート切断装置の切断刃装着構造であって、
前記切断刃固定具は、前面に把手を有すると共に前記固定手段により背面が切断刃昇降体に密着して固定され、前記固定手段による固定を解除することで前方へ移動可能であり、前方へ移動させることで前記切断刃昇降体から離脱可能であることを特徴とするシート切断装置の切断刃装着構造。A cutting blade mounting structure of a sheet cutting device, wherein a cutting blade fixing device equipped with a horizontally long cutting blade for cutting a sheet is connected and fixed to a cutting blade elevating body that moves up and down by fixing means,
The cutting blade fixture has a handle on the front surface, and the back surface is fixed in close contact with the cutting blade elevating body by the fixing means, and can be moved forward by releasing the fixing by the fixing means, and can move forward. The cutting blade mounting structure of the sheet cutting device, wherein the cutting blade can be detached from the cutting blade elevating body. 固定手段が締付ボルトであり、切断刃昇降体前面の適宜位置にねじ孔を設けると共に、切断刃固定具の前記ねじ孔に対応する位置の前後方向に前記締付ボルトを貫通可能な貫通孔を設け、前記締付ボルトを切断刃昇降体に一端が連結された係止部材と前記貫通孔とを介して前記ねじ孔に螺入操作することで前記切断刃固定具を前記切断刃昇降体に着脱する請求項１記載のシート切断装置の切断刃装着構造。The fixing means is a tightening bolt, and a screw hole is provided at an appropriate position on the front surface of the cutting blade elevating body, and a through hole capable of penetrating the tightening bolt in a front-rear direction at a position corresponding to the screw hole of the cutting blade fixture. The fastening bolt is screwed into the screw hole via a locking member having one end connected to a cutting blade elevating body and the through hole, so that the cutting blade fixture is connected to the cutting blade elevating body. The cutting blade mounting structure of the sheet cutting device according to claim 1, which is attached to and detached from the sheet cutting device. 係止部材は、切断刃固定具の上方に位置する切断刃昇降体に基部が軸着され、先端が切断刃固定具前面側の締付ボルトに係止し、締付ボルトに係止する係止位置と、係止を解除して切断刃固定具の前後移動を可能とした開放位置とに移動可能である請求項２記載のシート切断装置の切断刃装着構造。The locking member includes a cutting blade elevating body positioned above the cutting blade fixture, a base of which is pivotally mounted, and a distal end which is engaged with a fastening bolt on the front side of the cutting blade fixture, and which is engaged with the fastening bolt. 3. The cutting blade mounting structure for a sheet cutting apparatus according to claim 2, wherein the cutting blade mounting structure is movable to a stop position and an open position where the locking is released and the cutting blade fixture is moved forward and backward. 切断刃昇降体に連結固定した切断刃固定具の背面に弾性圧接して、前記切断刃固定具に装着した切断刃を加熱する加熱器を備えてなる請求項１乃至３の何れかに記載のシート切断装置の切断刃装着構造。The heating device according to any one of claims 1 to 3, further comprising: a heater that elastically presses the back surface of the cutting blade fixture fixedly connected to the cutting blade elevating body and heats the cutting blade mounted on the cutting blade fixture. The cutting blade mounting structure of the sheet cutting device.

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