JP3557018B2

JP3557018B2 - sewing machine

Info

Publication number: JP3557018B2
Application number: JP26235795A
Authority: JP
Inventors: 正則林
Original assignee: ペガサスミシン製造株式会社
Priority date: 1995-09-14
Filing date: 1995-09-14
Publication date: 2004-08-25
Anticipated expiration: 2015-09-14
Also published as: JPH0975568A

Description

【０００１】
【産業上の利用分野】
この出願に係る発明（以下「本願発明」と略称する）は、スウェットパンツやトレ−ナ等の被縫製物の足首部分や袖口部分に周長の異なるゴム編み筒状リブを縫合するミシンに関するものである。
【０００２】
【従来の技術】
従来は、実開昭６１−７７９７５号により開示されているように、筒型ベッドミシンと、筒型ベッドの前後に一固定軸線を中心に回動可能な固定張力手段を配置し、該固定張力手段より下方または上方位置に上下方向に移動可能な固定張力手段との平行軸線を中心に回動可能とした可動張力手段とで構成され、ゴムテ−プ及びゴムテ−プを縫合する布の縁を両張力手段に掛け渡して内面から支持し、可動張力手段の移動によりゴムテ−プ及び布に対して内面から張力を与えた状態で縫合するものがある。
【０００３】
【発明が解決しようとする課題】
しかし、上記のような構成からなる従来の装置によってゴムテ−プと筒状布とを縫合する場合、自然状態におけるゴムテ−プの周長は筒状布の周長よりも小さいので、両張力手段の支持により少なくともゴムテ−プは緊張した状態で支持される。この種のミシンにおける搬送が送り歯と押え金との挟持によって行なわれると、筒状布側の布送り方向と交差する方向にゴムテ−プが逃げてしまうという問題があった。
【０００４】
また、上記のような構成からなる従来の装置によって縫合する場合、両張力手段によりゴムテ−プが必要以上に緊張した状態で保持されるために、縫合後におけるゴムテ−プの伸縮性が劣化してしまうという問題があった。
【０００５】
本願発明は上記のような実情に鑑みてなされたもので、オペレ−タ−がゴム編み筒状リブと筒状布とをシリンダ−ベッド部にセットし、ミシンを起動させるだけで両被縫製物を各々正確に搬送し、縫合することができるミシンを提供することを主たる目的とする。
【０００６】
【課題を解決するための手段】
上記の課題を解決するため、本願発明の請求項１に係るミシンは、ゴム編み筒状リブと筒状リブの周長より大なる周長を有する筒状布とを内側からシリンダ−ベッドによって支持し、シリンダ−ベッドに設けられた針板より出没する下送り歯で筒状リブを送るとともに、筒状布を上送り歯によっていせ込みながら送り、筒状リブと筒状布とを縫合するミシンにおいて、前記シリンダ−ベッドに対して布送り方向及び布送り方向と直交する方向に移動可能であり、シリンダ−ベッドと協働して前記筒状布を支持する生地ガイドと、生地ガイドと前記シリンダ−ベッドとの間に設けられ、布送り方向に移動可能なリブ支持台と、布送り方向と交差する軸を中心として回転可能にリブ支持台に設けられ、リブ支持台の外面より一部が突出し、その突出部と前記シリンダ−ベッドとが協働して前記筒状リブを保持するようにした複数のロ−ラと、筒状リブを前記ミシンにセットする時には、リブ支持台をシリンダ−ベッドに近接する位置とし、セット後はシリンダ−ベッドから離間する位置となるようリブ支持台を布送り方向に移動させるリブ支持台駆動手段と、筒状布を前記ミシンにセットする時には、リブ支持台から離間した位置にあって、ミシンの縫合開始とともにリブ支持台に向かって所定の速度で布送り方向に生地ガイドを移動させ、生地ガイドがリブ支持台に近接した時に、前記ミシンの縫製線から外れるよう右側に生地ガイドを移動させる生地ガイド駆動手段とを備えたことを特徴とするものである。
【０００７】
尚、前記軸において請求項２のように、該軸と布送り方向軸線の交点を中心に回動させて軸の取り付け角度を調節できるようにすることが好ましい。
【０００８】
また、本願発明の他の態様について請求項３に係るミシンは、ゴム編み筒状リブと筒状リブの周長より大なる周長を有する筒状布とを内側からシリンダ−ベッドによって支持し、シリンダ−ベッドに設けられた針板より出没する下送り歯で筒状リブを送るとともに、筒状布を上送り歯によっていせ込みながら送り、筒状リブと筒状布とを縫合するミシンにおいて、前記シリンダ−ベッドに対して布送り方向と直交する方向に移動可能であり、シリンダ−ベッドと協働して前記筒状布を支持する生地ガイドと、前記シリンダ−ベッドに対して布送り方向に移動可能なリブ支持台と、布送り方向と交差する軸を中心として回転可能にリブ支持台に設けられ、リブ支持台の外面より一部が突出し、その突出部と前記シリンダ−ベッドとが協働して前記筒状リブを保持するようにした複数のロ−ラと、筒状リブを前記ミシンにセットする時には、リブ支持台をシリンダ−ベッドに近接する位置とし、セット後はシリンダ−ベッドから離間する位置となるようリブ支持台を布送り方向に移動させるリブ支持台駆動手段と、縫合中に縫合開始端部が生地ガイドへ近接してきた時に、筒状布側とは反対の布送り方向と交差する方向に生地ガイドを移動させる生地ガイド駆動手段とを備えたことを特徴とするものである。
【０００９】
尚、前記軸において請求項４のように、該軸と布送り方向軸線の交点を中心に回動させて軸の取り付け角度を調節できるようにすることが好ましく、前記生地ガイドにおいて請求項５のように、該ガイドに対向して補助搬送ロ−ラを設け、補助搬送ロ−ラは縫製開始時に生地ガイドと協働させて筒状布を挟持し、縫合中に生地ガイド駆動手段により生地ガイドが移動する前に、生地ガイドとの挟持を解放することが好ましい。
【００１０】
【作用】
請求項１に記載の発明によれば、シリンダ−ベッドとリブ支持台とに掛け渡されたゴム編み筒状リブをリブ支持台に設けられた複数のロ−ラにより縫合中にゴム編み筒状リブの一端縁側へ一定の力が加わった状態で搬送させ、またシリンダ−ベッドと生地ガイドに掛け渡された筒状布を内面からの張力がかからないように縫合中に生地ガイドをリブ支持台に向かって移動しながら支持するとともに、生地ガイドがリブ支持台に近接した時に生地ガイドをミシンの縫製線から外れるよう右側に移動させることで筒状布を自然周長の状態でいせこみながら搬送し、これより両被縫製物を正確に縫合するように作用することとなる。
【００１１】
請求項２に記載の発明によれば、シリンダ−ベッドと協働してゴム編み筒状リブを保持する複数のロ−ラを支持している軸を軸と布送り方向軸線の交点を中心に回動させて軸の取り付け角度を調節でき、これよりゴム編み筒状リブの一端縁へかかる一定の力の加減をしてゴム編み筒状リブの搬送を安定させることができ、両被縫製物を正確に縫合するように作用することとなる。
【００１２】
請求項３に記載の発明によれば、シリンダ−ベッドとリブ支持台とに掛け渡されたゴム編み筒状リブをリブ支持台に設けられた複数のロ−ラにより縫合中にゴム編み筒状リブの一端縁側へ一定の力が加わった状態で搬送され、また縫合中シリンダ−ベッドと生地ガイドとに掛け渡された筒状布の縫合開始部が生地ガイドに近接する迄シリンダ−ベッドと生地ガイドとが協働して筒状布を支持し、縫合開始部に近接した時にミシンの縫製線から外れるよう右側に生地ガイドをに移動させることで両被縫製物の縫合の邪魔にならずに縫合するように作用することとなる。
【００１３】
請求項４に記載の発明によれば、シリンダ−ベッドと協働してゴム編み筒状リブを保持する複数のロ−ラを支持している軸を軸と布送り方向軸線の交点を中心に回動させて軸の取り付け角度を調節でき、これよりゴム編み筒状リブの一端縁へかかる一定の力の加減をしてゴム編み筒状リブの搬送を安定させることができ、両被縫製物を正確に縫合するように作用することとなる。
【００１４】
請求項５に記載の発明によれば、生地ガイドの上方に配置された補助搬送ロ−ラが縫合開始時に生地ガイドと協働して筒状布を挟持し、その挟持した状態で筒状布をシリンダ−ベッド上に出没する下送り歯により搬送する。その後、縫合中に縫合開始部が生地ガイドへ近接した時に生地ガイドを生地ガイド駆動手段により筒状布側とは反対の布送り方向と交差する方向に移動させる前に、補助搬送ロ−ラが生地ガイドとの挟持を解放することで生地ガイドの移動時に筒状布にかかる抵抗を低減し、両被縫製物を正確に縫合するよう作用することとなる。
【００１５】
【実施例】
以下、本願発明の第１の実施例について、図１〜７に基づいて説明する。ここに示すミシンは、従来のシリンダ−ベッドミシンにおいて、周長の異なる異種の被縫製物の縫合用に改良を加えて用いるもので、シリンダ−ベッドミシンの基本的な機構は一部省略して説明する。
【００１６】
図１において、ミシン１は、上下動して糸を伴う針２と、針通過線ＮＬ近傍の上方に配置した被縫製物検知センサ−３（図４参照）と、押え金４と対向して針板５を上面に備えたシリンダ−ベッド６内に針２の上下動に同調して布送り方向に沿って前後上下に四運動し針板５の上面に出没する下送り歯７と布送り方向と交差する方向に左右に揺動する下ル−パ−８とが設けられ、その下ル−パ−８と針板５を挟んで上下方向に移動して運動する上ル−パ−９との協働によって布端に縁かがり縫目を形成されるように構成されると共に、布送り方向における針通過線ＮＬ手前に搬送されている両被縫製物のうち筒状布を送る上送り歯１０を設け、シリンダ−ベッド６左側へ突出する矩形の固定ア−ム１１（図４参照）を装着して形成されている。
【００１７】
ミシン１を固定した水平のミシンテ−ブル１２の下面には、布送り方向に沿って進退するように空気の供給排出により作動するピストンを内蔵したシリンダ−１３が水平に固定されている。このシリンダ−１３内のピストンから先方へ突出するロッド１４の先方端には、ミシンテ−ブル１２の側面に中間を水平軸１７により回動可能に支持された支持板１８の一端が回動可能に連結され、支持板１８の他端はリブ支持台１５の基台１６の右側に固定されている。
【００１８】
図２、３において、１５はリブ支持台である。基台１６は、シリンダ−ベッド６より上下幅が少し小さく、シリンダ−ベッド６の上下幅内で且つ平行位置に設けられている。支持台１９は、基台１６の布送り込み側に布送り出し側からネジ２０で取着され、縫製線ＳＬ（図４参照）寄りの一部の前後に筒抜け部２１を有し、シリンダ−ベッド６の上下幅と同じ直径で布送り込み側が半円筒状である。角度調整部材２２は、支持台１９の筒抜け部２１に位置付けされ、その一端が基台１６を介して調整ネジ２３により調整ネジ２３の軸線を中心として回動させて固定でき、他端は布送り方向と直交する方向に延びる軸２４を回動可能に支持する。軸２４の両端には２つのロ−ラ２５，２５がそれぞれ片止めされ、ロ−ラ２５，２５の外周の一部が支持台１９の半円筒状の外周面から突出している。前述したミシン１のシリンダ−ベッド６とリブ支持台１５とに掛け渡されたゴム編み筒状リブＲの縁がミシン１の駆動による縫合時に縫製線ＳＬ側に導かれるようゴム編み筒状リブＲの収縮作用が最も係る位置、ここでは、支持台１９の半円筒を２分割する線ＤＬ上に設けられた角度調整部材２２を中心として２分割線ＤＬに対して軸２４を１０゜から２０°程時計回りに回動させて固定された角度調整部材２２にロ−ラ２５，２５が右上斜め向きで位置決めされている（図３参照）。ロ−ラ２５の直径をシリンダ−ベッド６の上下幅よりも小さくすることで、ゴム編み筒状リブＲの周長をなるべく小径の状態且つ引っ掛からない状態で支持でき、また、ゴム編み筒状リブＲを支持台１９とロ−ラ２５，２５とで支持しているので、最小限のロ−ラ個数でゴム編み筒状リブＲを縫製線ＳＬ側に案内することができる。
実施例では基台１６と支持台１９とを分割しているが、基台１６がシリンダ−ベッド６とリブ支持台１５とに掛け渡されたゴム編み筒状リブＲに直接接触しないような構造であれば一体化されたものでもよい。
【００１９】
ミシンテ−ブル１２の上面には、図４に示すように布送り方向に沿って進退するように空気の供給排出により移動する磁石片を内蔵したロッドレスシリンダ−２６を水平に固定し、ロッドレスシリンダ−２６内の磁石片に対応して移動する案内体２７の上面に、布送り方向と直交する方向に沿って進退するように空気の供給排出により作動するピストンを内蔵したシリンダ−２８を設け、シリンダ−２８内のピストンから先方へ突出するロッド２９の先方端に生地ガイド３０を取着している。この生地ガイド３０がロッド２９を中心として回動しないようにロッド２９と平行に案内棒３１の一端を生地ガイド３０に取着し、他端は案内体２７に摺動可能に支持されている。ロッドレスシリンダ−２６内に設けられた磁石片の進退速度はロッドレスシリンダ−２６に設けた周知の速度制御機構で空気の供給排出量を調節して、縫合が開始されてから縫合開始部ＳＳがミシン１の搬送手段により生地ガイド３０の布送り込み側手前まで搬送される時間と合うようにすることで縫製中には筒状布Ｗ内側から外側への張力がかからないようにしている。
【００２０】
生地ガイド３０は、図１に詳示するようにリブ支持台１５に対してゴミ編み筒状リブＲが入る程度の隙間を開けて支持台１９の半円筒上部を覆うような高さに位置付けされている。生地ガイド３０がリブ支持台１５に近接し非作用位置である右方向に回避する時に、筒状布Ｗが生地ガイド３０の回避に伴って生地ガイド３０と一緒に移動しないように平面状の生地ガイド３０の後方部を円弧状に滑らかに下方へ屈曲させている。この屈曲面に覆い被さる筒状布Ｗに外側から内側へかかる張力が発生しても、張力が均等に分散して筒状布の縫製に影響を与えないようにしている。
【００２１】
ミシン１の手前には、布送り方向に直交する方向に沿って進退するように空気の供給排出により作動するピストンを内蔵したシリンダ−３２を水平に固定し、シリンダ−３２内のピストンから先方に突出するロッド３３の先端には生地案内３４が固定されている。シリンダ−ベッド６の針通過線ＮＬ手前の縫製線ＳＬ上に設けられた周知の布縁用切断メス（図示せず）の手前でこの生地案内３４は縫製線ＳＬに案内面を沿わせて被縫製物の布縁を切断メスが切断しないように布縁を案内する。
【００２２】
シリンダ−３２に平行して、布送り方向に直交する方向に沿って進退するように空気の供給排出により作動するピストンを内蔵したシリンダ−３５を水平に固定し、シリンダ−３５内のピストンから先方に突出するロッド３６の先端に案内片３７の一端を固定し、他端に生地外し棒３８が固定されている。縫合された両被縫製物を縫製線ＳＬから外すために、案内片３７と生地外し棒３８はシリンダ−ベッド６とリブ支持台１５との間で両被縫製物に接し縫製線ＳＬの右側から縫製線ＳＬを越えて左側まで移動する。
【００２３】
次に作用の説明をする。
リブ支持台１５が固定ア−ム１１を有したシリンダ−ベッド６に近接した状態でゴム編み筒状リブＲをシリンダ−ベッド６とリブ支持台１５とに掛け渡し、ゴム編み筒状リブＲの縁を縫製線ＳＬに沿うようにセットする。このゴム編み筒状リブＲが検知センサ−３によって検知されると図４に示すように、リブ支持台１５がシリンダ−１３の作動により逆布送り方向に所定の距離だけ離間移動してその後停止しゴム編み筒状リブＲに収縮作用がかかった状態となる。図７に示すタイミングチャ−トでは、検知センサ−３がゴム編み筒状リブＲを検知した後時間Ｔ１後にリブ支持台１５がシリンダ−ベッド６に対して離間する位置に移動するようにしている。それから筒状布Ｗをシリンダ−ベッド６と縫製線ＳＬ上に停止している生地ガイド３０に筒状布Ｗの一部が垂下した状態で掛け渡し、筒状布Ｗの縁をゴム編み筒状リブＲの縁に沿うようにして重ねる。その後、押え金４を降下させて両被縫製物を押える。図７に示すタイミングチャ−トでは、押え信号を与えると直ちに押え金４が降下するようにしている。この状態で、例えばペダルスイッチ等を操作することにより縫合指令を出す。そして、この縫合指令とともに、ロッドレスシリンダ−２６内の磁石片を所定の速度で移動させ、これに対応して案内体２７が磁石片に追従移動し生地ガイド３０はリブ支持台１５へ近接していく。図７に示すタイミングチャ−トでは、縫合指令後直ちに生地ガイド３０を布送り方向に作動させるロッドレスシリンダ−２６の電気信号をＯＦＦにするとともに、縫合指令後Ｔ２時間後にミシン１の縫合を開始するようにしている。
【００２４】
以上に示したようにゴム編み筒状リブＲの縁をリブ支持台１５に設けたロ−ラ２５，２５により縫製線ＳＬに沿うようにして筒状布Ｗとゴム編み筒状リブＲとを縫合していくと、やがて図５（側面図は図１参照）に示すように、生地ガイド３０がリブ支持台１５に近接した状態になり、筒状布Ｗとゴム編み筒状リブＲとの縫合開始部ＳＳがロ−ラ２５，２５の手前に達すると、その時点でシリンダ−２８を作動させて、先端に生地ガイド３０が取り付けられたロッド２９を縫製線ＳＬから外れるよう右側に作動させる（図６参照）。図７に示すタイミングチャ−トでは、ミシン１が縫合を開始してからカウントされる運針数がｋ１に達したことにより、縫合開始部がロ−ラ２５，２５の手前に達した時点を知り、それに基づいてシリンダ−２８の電気信号をＯＦＦにして先端に生地ガイド３０を設けたロッド２９を収縮させている。これによって、筒状布Ｗとゴム編み筒状リブＲとの両一端縁を縫合し続けると双方の周長を一致させることができる。
【００２５】
また、筒状布Ｗとゴム編み筒状リブＲとの両一端縁を一致させるため、図７に示すタイミングチャ−トでは、ミシン１が縫合を開始してからカウントされる運針数がｋ２に達した時にシリンダ−３２の電気信号をＯＮにして、布縁用切断メス（図示せず）の手前側に配置された生地案内３４を布送り方向と直交する方向に非作用位置から作用位置である縫製線ＳＬに進出させて両被縫製物の縫合開始部の一端縁が再び切断されないようにしている。
【００２６】
また、筒状布Ｗとゴム編み筒状リブＲとの縫合後の縫糸処理について、リブ支持台１５をシリンダ−１３の作動によりシリンダ−ベッド６側へ戻してから生地外し棒３８をシリンダ−３５により作動させることによって筒状布Ｗとゴム編み筒状リブＲを縫製線ＳＬと直交する方向に押し出して両被縫製物縁に連なる空環をミシンにより発生させ、周知の糸切断装置で糸を切断できるようにしている。図７に示すタイミングチャ−トでは、ミシン１が縫合を開始してからカウントされる運針数がｋ３に達し且つ生地案内３４が布縁用切断メス手前で進出した後にシリンダ−１３の電気信号をＯＦＦにしてリブ支持台１５をシリンダ−ベッド６側へ戻し、生地案内３４の作動後からカウントされる運針数がｋ４に達した時にシリンダ−３５の電気信号をＯＮにして生地外し棒３８を作動させて両被縫製物縁に連なる空環がミシンにより発生するようにしている。
【００２７】
前述の縫糸処理後にミシンを停止し、その停止後Ｔ３時間後に押え金を上昇させて縫合した両被縫製物を取り除けるようにしている。
【００２８】
次に本願発明の第２の実施例に関する装置について図８、９及び１０に基づいて説明する。ただし、第１の実施例で用いられたものについては同一の符号を使用し、第１の実施例と構造が同じであるミシン１、リブ支持台１５、生地案内３４と生地外し棒３８については説明を省略する。
【００２９】
図８において、ミシンテ−ブル１２の上面に固定板（図示せず）をネジで固定している。この固定板に布送り方向と直交する方向に沿って進退するように空気の供給排出により作動するピストンを内蔵したシリンダ−２８を図５に示すように設け、シリンダ−内のピストンから先方へ突出するロッド２９の先方端に生地ガイド板３９を取着している。この生地ガイド板３９がロッド２９を中心として回動可能しないようにロッド２９と平行に案内棒３１の一端を生地ガイド板３９に取着し、他端は固定板に摺動可能に支持されている。生地ガイド板３９はリブ支持台１５上部でゴム編み筒状リブＲが入る程度の隙間を有した高さに位置付けされている。
【００３０】
図８、９において、４０は補助搬送ロ−ラである。ブラケット４１は、その一端がミシンテ−ブル１２上に取り付けられ、他端には上下方向に沿って進退するように空気の供給排出により作動するピストンを内蔵したシリンダ−４２が取り付けられている。シリンダ−４２内のピストンから先方へ突出するロッド４３の先方端に水平板４４が取り付けられている。水平板４４の下方に平行に板４５が配置され、板４５に一端が取着され他端が水平板４４に設けられた孔にそれぞれ摺動可能に支持された一対の案内軸４６，４６が設けられている。水平板４４が降下すると、これに連動して板４５が降下するように両板４４、４５間の一対の案内軸４６，４６にコイルバネ４７，４７がそれぞれ設けられている。調節部材４８は、その一端を板４５の下方に調節ネジ４９により調節ネジ４９の軸線を中心として回動可能に調節固定でき、他端に水平方向に回転可能に軸５０を支持している。ロ−ラ５１は、軸５０の一端に片止めされている。この補助搬送ロ−ラ４０は、前述したミシン１のシリンダ−ベッド６と生地ガイド板３９とに掛け渡された筒状布Ｗの生地ガイド板３９上部に対向して配置されている。縫合開始時にシリンダ−４２の作動により降下し、生地ガイド板３９と協働して筒状布Ｗを挟持するロ−ラ５１は、ミシン１の駆動による縫合時に筒状布Ｗが縫製線ＳＬ側に導かれるよう通常は調節部材４８を図１０に示すように調節ネジ４９を中心として布送り方向Ｌに対して１０から２０゜程反時計回りに回動させて、底面から見るとロ−ラ５１が右上斜め向きの状態となるよう調節ネジ４９により固定されている。
【００３１】
次に図１１に示すタイミングチャ−トにしたがって作用を説明する。
まず、ゴム編み筒状リブＲを固定ア−ム１１を有したシリンダ−ベッド６とリブ支持台１５とに掛け渡す。このゴム編み筒状リブＲの掛け渡しが検知センサ−３によって検知された後時間Ｔ１後にリブ支持台１５がシリンダ−ベッド６に対して離間する位置に移動するとともに、生地ガイド板３９をゴム編み筒状リブＲが掛けられたリブ支持台１５の上方で且つ縫製線ＳＬ上にシリンダ−２８の作動により移動させる。それから筒状布Ｗをシリンダ−ベッド６と縫製線ＳＬ上に停止している生地ガイド板３９に筒状布Ｗの一部が垂下した状態で掛け渡し、筒状布Ｗの縁をゴム編み筒状リブＲの縁に沿うようにして重ね、その後、押え金４を降下させて両被縫製物を押える。この状態で、例えばペダルスイッチ等を操作することにより縫合指令を出す。そして、縫合指令と同時に補助搬送ロ−ラ４０を生地ガイド板３９に支持されている筒状布Ｗ上面に接触させる。図１１に示すタイミングチャ−トでは、縫合指令後Ｔ２時間後にミシン１の縫合を開始するようにしている。
【００３２】
以上に示したようにゴム編み筒状リブＲの縁をリブ支持台１５に設けたロ−ラ２５，２５により、また、筒状布Ｗを補助搬送ロ−ラ４０に設けたロ−ラ５１により縫製線ＳＬに沿うように案内して筒状布Ｗとゴム編み筒状リブＲとを縫合していくと、やがて図８に示すように、筒状布Ｗとゴム編み筒状リブＲとの縫合開始部が生地ガイド板３９の手前に達する。その時点でシリンダ−４２を作動させて、ロ−ラ５１が生地ガイド板３９から上方へ離間する。図１１に示すタイミングチャ−トでは、ミシン１が縫合を開始してからカウントされる運針数がｋ５に達したことにより、縫合開始部がロ−ラ５１の手前に達した時点を知り、それに基づいてシリンダ−４２の電気信号をＯＦＦにしてロッド４３を収縮させ、ロ−ラ５１を生地ガイド板３９から離間させるようにしている。その後の動作の詳細は第１の実施例と同じであるので省略する。
【発明の効果】
以上のように本願発明はゴム編み筒状リブの一端縁を正確に搬送して筒状布と縫合することができるうえ、請求項１の発明においては縫合中にいせ込みながら搬送される筒状布を自然周長の状態で支持することでゴム編み筒状リブとの縫い上がり品質を向上させることができ、また請求項２の発明においては厚みや伸縮性等の異なるゴム編み筒状リブに対応してゴム編み筒状リブを布送り方向と交差する方向に搬送する搬送力を調節することで筒状布との縫い上がり品質を向上させることができる。請求項３の発明においては縫合中にいせ込みながら搬送される筒状布を生地ガイドが邪魔しないように支持することで被縫製物同志の接触面を低減しゴム編み筒状リブとの縫い上がり品質を向上させることができ、請求項４の発明においては厚みや伸縮性等の異なるゴム編み筒状リブに対応してゴム編み筒状リブを布送り方向と交差する方向に搬送する搬送力を調節することで筒状布との縫い上がり品質を向上させることができ、請求項５の発明においては縫合中にいせ込みながら搬送される筒状布を生地ガイドと補助搬送ロ−ラとで挟持した状態で搬送することでゴム編み筒状リブとの縫い上がり品質を向上させることができる。
【図面の簡単な説明】
【図１】この発明に係わるミシンの第１実施例を示す概略側面図
【図２】図１に示すリブ支持台の構造説明図（平面図）
【図３】図１に示すリブ支持台の構造説明図（正面図）
【図４】第１実施例に示したミシンの作動状態を示す説明図
【図５】第１実施例に示したミシンの作動状態を示す説明図
【図６】第１実施例に示したミシンの作動状態を示す説明図
【図７】第１実施例に示したミシンの作動状態を示すタイミングチャ−ト
【図８】この発明に係わるミシンの第２実施例を示す概略側面図
【図９】図８に示す補助搬送ロ−ラの構造説明図（正面図）
【図１０】図８に示す補助搬送ロ−ラの構造説明図（底面図）
【図１１】第２実施例に示したミシンの作動状態を示すタイミングチャ−ト
【符号の説明】
１・・・ミシン、５・・・針板、６・・・シリンダ−ベッド、７・・・下送り歯、１０・・・上送り歯、１３・・・シリンダ−、１５・・・リブ支持台、１９・・・支持台、２２・・・角度調整部材、２３・・・調整ネジ、２４・・・軸、２５・・・ロ−ラ、２６・・・ロッドレスシリンダ−、２７・・・案内体、２８・・・シリンダ−、３０・・・生地ガイド、４０・・・補助搬送ロ−ラ、５１・・・ロ−ラ、Ｗ・・・筒状布、Ｒ・・・ゴム編み筒状リブ[0001]
[Industrial applications]
The invention according to the present application (hereinafter abbreviated as “the invention of the present application”) relates to a sewing machine that sewes rubber-knitted tubular ribs having different circumferential lengths to an ankle portion or a cuff portion of a sewing product such as a sweatpants or a trainer. It is.
[0002]
[Prior art]
Conventionally, as disclosed in Japanese Utility Model Application Laid-Open No. Sho 61-77975, a cylindrical bed sewing machine and fixed tension means rotatable around one fixed axis before and after the cylindrical bed are disposed, A fixed tension means movable vertically in a position below or above the means and a movable tension means rotatable about a parallel axis, and a rubber tape and an edge of a cloth for sewing the rubber tape. There is a type in which the rubber tape and the cloth are sewn while tension is applied to the rubber tape and the cloth by the movement of the movable tension means from the inner surface while being supported by the tension means and being supported by the inner surface.
[0003]
[Problems to be solved by the invention]
However, when the rubber tape and the tubular cloth are sewn by the conventional device having the above-described configuration, the circumferential length of the rubber tape in the natural state is smaller than the circumferential length of the tubular cloth. By this support, at least the rubber tape is supported in a tensioned state. If the conveyance in this type of sewing machine is performed by sandwiching the feed dog and the presser foot, there is a problem that the rubber tape escapes in a direction intersecting the cloth feeding direction on the cylindrical cloth side.
[0004]
In the case of suturing with a conventional apparatus having the above-described configuration, the rubber tape is held in a state of being unnecessarily tense by the two tension means, so that the elasticity of the rubber tape after suturing deteriorates. There was a problem that would.
[0005]
The present invention has been made in view of the above-described circumstances, and an operator sets a rubber-knitted cylindrical rib and a cylindrical cloth on a cylinder-bed portion, and starts the sewing machine by simply activating the sewing machine. The main object of the present invention is to provide a sewing machine which can accurately convey and sew the sewing machines.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, a sewing machine according to claim 1 of the present invention supports a rubber knitted cylindrical rib and a cylindrical cloth having a circumferential length larger than the circumferential length of the cylindrical rib from the inside by a cylinder bed. A sewing machine that feeds a cylindrical rib with a lower feed dog that protrudes and retracts from a needle plate provided on a cylinder bed, and feeds the cylindrical cloth while squatting it with an upper feed dog to sew the cylindrical rib and the cylindrical cloth. A cloth guide that is movable with respect to the cylinder bed in a cloth feeding direction and a direction orthogonal to the cloth feeding direction, and that supports the tubular cloth in cooperation with the cylinder bed; and a cloth guide and the cylinder. -A rib support provided between the bed and movable in the cloth feed direction, and provided on the rib support so as to be rotatable about an axis intersecting with the cloth feed direction, and a part of the rib support from an outer surface thereof. Overhang, its overhang A plurality of rollers configured to cooperate with the cylinder bed to hold the cylindrical ribs, and a rib support base close to the cylinder bed when the cylindrical ribs are set on the sewing machine. And a rib support driving means for moving the rib support in the cloth feeding direction so as to be separated from the cylinder-bed after the setting, and separated from the rib support when the tubular cloth is set on the sewing machine. In the position, the cloth guide is moved in the cloth feeding direction at a predetermined speed toward the rib support with the start of sewing of the sewing machine, and when the cloth guide approaches the rib support, Right side so that it is off the sewing line of the sewing machine And a cloth guide driving means for moving the cloth guide.
[0007]
The shaft can be rotated about the intersection of the axis and the axis of the cloth feeding direction so that the mounting angle of the shaft can be adjusted. You Preferably.
[0008]
According to another aspect of the present invention, a sewing machine according to claim 3 supports a rubber knitted cylindrical rib and a cylindrical cloth having a circumferential length greater than the circumferential length of the cylindrical rib from the inside by a cylinder-bed, In a sewing machine that feeds a cylindrical rib with a lower feed dog that protrudes and disappears from a needle plate provided in a cylinder-bed, and feeds a cylindrical cloth while squatting it with an upper feed dog, and sews the cylindrical rib and the cylindrical cloth, A cloth guide that is movable with respect to the cylinder bed in a direction perpendicular to a cloth feeding direction, and that supports the cylindrical cloth in cooperation with the cylinder bed; A movable rib support and a rib support rotatably provided about an axis intersecting the cloth feeding direction, a part of the rib support protruding from the outer surface of the rib support, and the protrusion and the cylinder bed cooperate with each other. Working before A plurality of rollers configured to hold the cylindrical ribs, and a rib support base positioned at a position close to the cylinder bed when the cylindrical ribs are set on the sewing machine, and separated from the cylinder bed after the setting. A rib support driving means for moving the rib support in the cloth feeding direction so as to intersect with the cloth feeding direction opposite to the cylindrical cloth when the sewing start end approaches the cloth guide during sewing. Fabric driving means for moving the fabric guide in the direction.
[0009]
Preferably, the shaft is rotated about the intersection of the axis and the cloth feed direction axis to adjust the mounting angle of the shaft. Thus, an auxiliary transport roller is provided facing the guide, and the auxiliary transport roller cooperates with the fabric guide at the start of sewing to hold the tubular cloth, and the fabric guide is driven by the fabric guide driving means during sewing. It is preferable to release the pinching with the fabric guide before moving.
[0010]
[Action]
According to the first aspect of the present invention, the rubber-knitted tubular rib laid over the cylinder bed and the rib support is sewn by the plurality of rollers provided on the rib support during the sewing. The ribs are conveyed while a constant force is applied to one edge side of the ribs, and the cloth guide is attached to the rib support table during sewing so that tension from the inner surface is not applied to the cylindrical cloth hung between the cylinder bed and the cloth guide. While supporting the fabric guide, and when the fabric guide approaches the rib support, Right side so that it is off the sewing line of the sewing machine , The cylindrical cloth is conveyed while being sewn in the state of the natural circumference, and thereby the both fabrics act to be stitched accurately.
[0011]
According to the second aspect of the present invention, the shaft supporting the plurality of rollers holding the rubber knitted cylindrical rib in cooperation with the cylinder bed is centered on the intersection of the shaft and the cloth feed direction axis. By rotating the shaft, the mounting angle of the shaft can be adjusted, and a constant force applied to one edge of the rubber knitted tubular rib can be adjusted to stabilize the transfer of the rubber knitted tubular rib. Will act to stitch correctly.
[0012]
According to the third aspect of the present invention, the rubber knitted tubular ribs spanned between the cylinder bed and the rib support are formed by a plurality of rollers provided on the rib support while the rubber knitted tubular ribs are being sewn. The rib is conveyed with a constant force applied to one edge side of the rib, and the cylinder bed and the cloth are sewn until the sewing start portion of the tubular cloth wrapped between the cylinder bed and the cloth guide during sewing is close to the cloth guide. When the guide cooperates to support the tubular cloth and approaches the suture start Right side so that it is off the sewing line of the sewing machine By moving the fabric guide to, the stitches can be sewn without hindering the sewing of both sewing products.
[0013]
According to the fourth aspect of the present invention, the shaft supporting the plurality of rollers holding the rubber knitted tubular ribs in cooperation with the cylinder bed is centered on the intersection of the shaft and the cloth feed direction axis. By rotating the shaft, the mounting angle of the shaft can be adjusted, and a constant force applied to one edge of the rubber knitted tubular rib can be adjusted to stabilize the transfer of the rubber knitted tubular rib. Will act to stitch correctly.
[0014]
According to the fifth aspect of the present invention, the auxiliary transport roller disposed above the cloth guide cooperates with the cloth guide at the start of sewing to hold the tubular cloth, and in the state of holding the tubular cloth, Is conveyed by a lower feed dog which appears and disappears on a cylinder bed. Thereafter, when the sewing start portion approaches the cloth guide during sewing, before the cloth guide is moved by the cloth guide driving means in a direction intersecting with the cloth feeding direction opposite to the cylindrical cloth side, the auxiliary transport roller is moved. By releasing the holding of the cloth guide with the cloth guide, the resistance applied to the tubular cloth when the cloth guide is moved is reduced, so that the two fabrics can be stitched accurately.
[0015]
【Example】
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. The sewing machine shown here is a conventional cylinder-bed sewing machine that is used with an improvement for suturing different kinds of workpieces having different circumferential lengths. The basic mechanism of the cylinder-bed sewing machine is partially omitted. explain.
[0016]
In FIG. 1, a sewing machine 1 faces a needle 2 that moves up and down with a thread, a sewing object detection sensor 3 (see FIG. 4) disposed above near a needle passing line NL, and a presser foot 4. A lower feed tooth 7 and a cloth feeder which move four times up and down in the cloth feed direction in synchronism with the vertical movement of the needle 2 in a cylinder bed 6 provided with a needle plate 5 on the upper surface thereof. A lower looper 8 which swings left and right in a direction intersecting the direction, and an upper looper 9 which moves vertically by sandwiching the lower looper 8 and the needle plate 5; And an upper feed tooth for feeding a tubular cloth out of both the sewn articles conveyed before the needle passing line NL in the cloth feed direction. 10 and is formed by mounting a rectangular fixed arm 11 (see FIG. 4) projecting to the left of the cylinder bed 6.
[0017]
On the lower surface of the horizontal sewing table 12 to which the sewing machine 1 is fixed, a cylinder 13 having a built-in piston which operates by supplying and discharging air so as to advance and retreat in the cloth feeding direction is fixed horizontally. One end of a support plate 18 rotatably supported on the side surface of the sewing machine table 12 by a horizontal shaft 17 at the forward end of a rod 14 projecting forward from a piston in the cylinder 13. The other end of the support plate 18 is connected to the right side of the base 16 of the rib support 15.
[0018]
2 and 3, reference numeral 15 denotes a rib support. The base 16 has a slightly smaller vertical dimension than the cylinder bed 6 and is provided within the vertical dimension of the cylinder bed 6 and at a parallel position. The support base 19 is attached to the cloth feed side of the base 16 with screws 20 from the cloth feed side, has a tube dropout portion 21 before and after a part near the sewing line SL (see FIG. 4), and has a cylinder bed 6. The cloth feeding side has a semi-cylindrical shape with the same diameter as the top and bottom widths of the cloth. The angle adjusting member 22 is positioned at the tube removing portion 21 of the support base 19, and one end thereof can be fixed by rotating the adjusting screw 23 about the axis of the adjusting screw 23 via the base 16, and the other end is cloth feed. A shaft 24 extending in a direction perpendicular to the direction is rotatably supported. Two rollers 25, 25 are fixed to both ends of the shaft 24, respectively, and a part of the outer periphery of the rollers 25, 25 projects from the semi-cylindrical outer peripheral surface of the support base 19. The rubber knitted tubular rib R is extended so that the edge of the rubber knitted tubular rib R bridged between the cylinder bed 6 and the rib support base 15 of the sewing machine 1 is guided to the sewing line SL when the sewing machine 1 is driven. The axis 24 is moved from 10 ° to 20 ° with respect to the dividing line DL about the angle adjusting member 22 provided on the line DL that divides the half cylinder of the support base 19 into two parts. The rollers 25, 25 are positioned obliquely in the upper right direction on the angle adjusting member 22 fixed by being rotated clockwise (see FIG. 3). By making the diameter of the roller 25 smaller than the vertical width of the cylinder bed 6, the circumferential length of the rubber knitted tubular rib R can be supported as small as possible without being caught. Since R is supported by the support base 19 and the rollers 25, 25, the rubber knitted tubular rib R can be guided to the sewing line SL with a minimum number of rollers.
In the embodiment, the base 16 and the support base 19 are divided, but the base 16 does not directly contact the rubber-knitted tubular rib R bridged between the cylinder bed 6 and the rib support base 15. If so, it may be integrated.
[0019]
On the upper surface of the sewing table 12, as shown in FIG. 4, a rodless cylinder 26 incorporating a magnet piece which moves by air supply and discharge so as to advance and retreat in the cloth feeding direction is horizontally fixed, On a top surface of a guide body 27 that moves in accordance with the magnet piece in the cylinder 26, a cylinder 28 having a built-in piston that operates by supplying and discharging air so as to advance and retreat in a direction orthogonal to the cloth feeding direction is provided. A dough guide 30 is attached to the forward end of a rod 29 projecting forward from a piston in a cylinder 28. One end of a guide rod 31 is attached to the cloth guide 30 in parallel with the rod 29 so that the cloth guide 30 does not rotate around the rod 29, and the other end is slidably supported by the guide 27. The advance / retreat speed of the magnet piece provided in the rodless cylinder 26 is adjusted by controlling the supply and discharge of air by a well-known speed control mechanism provided in the rodless cylinder 26. Is adjusted to the time when the sheet is conveyed to the cloth feeding side of the cloth guide 30 by the conveying means of the sewing machine 1 so that tension from the inside to the outside of the tubular cloth W is not applied during sewing.
[0020]
As shown in detail in FIG. 1, the cloth guide 30 is positioned at such a height as to cover the upper half of the semi-cylinder of the support base 19 with a gap large enough to allow the garbage tubular rib R to enter the rib support base 15. ing. When the fabric guide 30 is close to the rib support 15 and avoids in the right direction, which is a non-operating position, the planar fabric W is so arranged that the tubular fabric W does not move together with the fabric guide 30 along with the avoidance of the fabric guide 30. The rear portion of the guide 30 is smoothly bent downward in an arc shape. Even if a tension is applied to the tubular cloth W covering the bent surface from the outside to the inside, the tension is evenly distributed so as not to affect the sewing of the tubular cloth.
[0021]
In front of the sewing machine 1, a cylinder 32 having a built-in piston that operates by supplying and discharging air is horizontally fixed so as to advance and retreat in a direction orthogonal to the cloth feeding direction, and the cylinder 32 is moved forward from the piston in the cylinder 32. A dough guide 34 is fixed to the tip of the protruding rod 33. In front of a well-known cloth edge cutting knife (not shown) provided on the sewing line SL in front of the needle passage line NL of the cylinder bed 6, the cloth guide 34 is covered with the guide surface along the sewing line SL. The cloth edge is guided so that the cutting knife does not cut the cloth edge of the sewing product.
[0022]
A cylinder 35 with a built-in piston that operates by air supply and discharge is horizontally fixed so as to advance and retreat in a direction perpendicular to the cloth feeding direction in parallel with the cylinder 32, and the cylinder 35 is moved forward from the piston in the cylinder 35. One end of a guide piece 37 is fixed to the tip of a rod 36 protruding from the other end, and a material removing rod 38 is fixed to the other end. In order to remove both sewn stitches from the sewing line SL, the guide piece 37 and the cloth removing rod 38 contact the both stitches between the cylinder bed 6 and the rib support 15 and come into contact with the right and left of the sewing line SL. It moves to the left over the sewing line SL.
[0023]
Next, the operation will be described.
In a state where the rib support 15 is close to the cylinder bed 6 having the fixed arm 11, the rubber knitted cylindrical rib R is bridged between the cylinder bed 6 and the rib support 15 to form the rubber knitted cylindrical rib R. The edge is set along the sewing line SL. When this rubber knitted tubular rib R is detected by the detection sensor-3, as shown in FIG. 4, the rib support base 15 is moved by a predetermined distance in the reverse cloth feed direction by the operation of the cylinder-13 and then stopped. The rubber knitted tubular rib R is in a state of contraction. In the timing chart shown in FIG. 7, the rib support 15 is moved to a position separated from the cylinder bed 6 after a time T1 after the detection sensor 3 detects the rubber knitted tubular rib R. . Then, the tubular cloth W is wrapped around the cylinder bed 6 and the fabric guide 30 stopped on the sewing line SL in a state where a part of the tubular cloth W hangs down. It overlaps so that it may follow the edge of the rib R. Thereafter, the presser foot 4 is lowered to hold both the workpieces. In the timing chart shown in FIG. 7, the presser foot 4 is immediately lowered when a presser signal is given. In this state, a suture command is issued by operating, for example, a pedal switch or the like. Along with the sewing command, the magnet piece in the rodless cylinder 26 is moved at a predetermined speed, and the guide 27 follows the magnet piece in response to the movement, and the cloth guide 30 approaches the rib support base 15. To go. In the timing chart shown in FIG. 7, the electric signal of the rodless cylinder 26 for operating the cloth guide 30 in the cloth feeding direction immediately after the sewing command is turned off, and the sewing of the sewing machine 1 is started T2 hours after the sewing command. I am trying to do it.
[0024]
As described above, the tubular cloth W and the rubber-knitted tubular rib R are formed so that the edge of the rubber-knitted tubular rib R is along the sewing line SL by the rollers 25, 25 provided on the rib support base 15. As the sewing is performed, as shown in FIG. 5 (see FIG. 1 for a side view), the cloth guide 30 is brought close to the rib support 15 and the cylindrical cloth W and the rubber knitted cylindrical rib R are connected to each other. When the sewing start portion SS reaches the position just before the rollers 25, 25, the cylinder 28 is actuated at that time, and the rod 29 having the fabric guide 30 attached to the tip is actuated to the right so as to be disengaged from the sewing line SL. (See FIG. 6). In the timing chart shown in FIG. 7, when the number of stitches counted since the sewing machine 1 started sewing has reached k1, it is known that the sewing start portion has reached just before the rollers 25, 25. Based on this, the electric signal of the cylinder 28 is turned off, and the rod 29 provided with the fabric guide 30 at the tip is contracted. In this way, if the both ends of the tubular cloth W and the rubber knitted tubular rib R are continuously sewn, the circumferential lengths of both can be matched.
[0025]
In order to make both ends of the cylindrical cloth W and the rubber knitted cylindrical rib R coincide with each other, in the timing chart shown in FIG. 7, the number of stitches counted after the sewing machine 1 starts sewing is k2. When it reaches the position, the electric signal of the cylinder 32 is turned on, and the cloth guide 34 disposed on the front side of the cloth cutting knife (not shown) is moved from the non-operation position to the operation position in a direction orthogonal to the cloth feeding direction. It is advanced to a certain sewing line SL to prevent one end edge of the sewing start portion of both sewing objects from being cut again.
[0026]
Further, regarding the sewing process after the sewing of the tubular cloth W and the rubber knitted tubular rib R, the rib support base 15 is returned to the cylinder bed 6 side by the operation of the cylinder 13, and then the cloth removing rod 38 is moved to the cylinder 35. , The cylindrical cloth W and the rubber knitted cylindrical rib R are extruded in a direction orthogonal to the sewing line SL to generate an empty ring connected to both sewing object edges by a sewing machine, and the thread is cut by a known thread cutting device. We can cut it. In the timing chart shown in FIG. 7, after the sewing machine 1 starts sewing, the number of needle movements counted reaches k3 and the cloth guide 34 advances before the cloth scalpel knife before the electric signal of the cylinder 13 is transmitted. Turn OFF, return the rib support base 15 to the cylinder bed 6 side, and when the number of hand movements counted after the operation of the cloth guide 34 reaches k4, turn on the electric signal of the cylinder 35 and operate the cloth removal rod 38. In this way, an empty ring connected to both edges of the workpiece is generated by the sewing machine.
[0027]
After the sewing process described above, the sewing machine is stopped, and after T3 hours after the stop, the presser foot is raised to remove both stitched sewing materials.
[0028]
Next, an apparatus according to a second embodiment of the present invention will be described with reference to FIGS. However, the same reference numerals are used for those used in the first embodiment, and the sewing machine 1, the rib support 15, the cloth guide 34, and the cloth removing rod 38 having the same structure as those of the first embodiment are used. Description is omitted.
[0029]
8, a fixing plate (not shown) is fixed to the upper surface of the sewing table 12 with screws. As shown in FIG. 5, a cylinder 28 having a built-in piston which operates by supplying and discharging air is provided on the fixing plate so as to advance and retreat in a direction perpendicular to the cloth feeding direction as shown in FIG. A dough guide plate 39 is attached to the forward end of the rod 29 to be cut. One end of the guide rod 31 is attached to the dough guide plate 39 in parallel with the rod 29 so that the dough guide plate 39 cannot rotate around the rod 29, and the other end is slidably supported by the fixed plate. I have. The cloth guide plate 39 is positioned above the rib support base 15 at a height having a gap enough to receive the rubber knitted tubular rib R.
[0030]
8 and 9, reference numeral 40 denotes an auxiliary transport roller. The bracket 41 has one end mounted on the sewing machine table 12 and the other end mounted with a cylinder 42 having a built-in piston which operates by air supply and discharge so as to advance and retreat in the vertical direction. A horizontal plate 44 is attached to a forward end of a rod 43 that projects forward from a piston in a cylinder -42. A plate 45 is disposed in parallel below the horizontal plate 44, and a pair of guide shafts 46, 46 having one end attached to the plate 45 and the other end slidably supported by holes provided in the horizontal plate 44, respectively. Is provided. Coil springs 47, 47 are provided on a pair of guide shafts 46, 46 between the two plates 44, 45, respectively, so that when the horizontal plate 44 is lowered, the plate 45 is lowered in conjunction therewith. The adjustment member 48 can be adjusted and fixed at one end below the plate 45 by an adjustment screw 49 so as to be rotatable around the axis of the adjustment screw 49, and has a shaft 50 supported at the other end so as to be rotatable in the horizontal direction. The roller 51 is fixed to one end of the shaft 50. The auxiliary transport roller 40 is arranged opposite to the upper portion of the cloth guide plate 39 of the tubular cloth W which is stretched between the cylinder bed 6 of the sewing machine 1 and the cloth guide plate 39. At the start of sewing, the cylinder 51 is lowered by the operation of the cylinder 42 and cooperates with the fabric guide plate 39 to hold the tubular cloth W. Usually, the adjusting member 48 is rotated counterclockwise about 10 to 20 degrees with respect to the cloth feeding direction L about the adjusting screw 49 as shown in FIG. 51 is fixed by an adjusting screw 49 so as to be inclined obliquely to the upper right.
[0031]
Next, the operation will be described with reference to the timing chart shown in FIG.
First, the rubber knitted tubular rib R is laid over the cylinder bed 6 having the fixing arm 11 and the rib support 15. After a time T1 after the detection of the bridging of the rubber knitted tubular ribs R by the detection sensor 3, the rib support 15 moves to a position separated from the cylinder bed 6, and the cloth guide plate 39 is knitted with rubber. The cylinder is moved by the operation of the cylinder -28 above the rib support base 15 on which the cylindrical rib R is hung and on the sewing line SL. Then, the tubular cloth W is wrapped around the cylinder bed 6 and the cloth guide plate 39 stopped on the sewing line SL in a state where a part of the tubular cloth W hangs down, and the edge of the tubular cloth W is rubbed with a rubber knitting tube. After overlapping along the edges of the ribs R, the presser foot 4 is lowered to hold both sewn articles. In this state, a suture command is issued by operating, for example, a pedal switch or the like. Then, at the same time as the sewing command, the auxiliary transport roller 40 is brought into contact with the upper surface of the tubular cloth W supported by the cloth guide plate 39. In the timing chart shown in FIG. 11, the sewing of the sewing machine 1 is started T2 hours after the suturing command.
[0032]
As described above, the edges of the rubber knitted tubular ribs R are provided by the rollers 25, 25 provided on the rib support base 15, and the tubular cloth W is provided on the auxiliary transport roller 40 by the rollers 51. When the tubular cloth W and the rubber-knitted tubular rib R are sewn by guiding along the sewing line SL, the tubular cloth W and the rubber-knitted tubular rib R are eventually formed as shown in FIG. The sewing start portion reaches just before the fabric guide plate 39. At that time, the cylinder 42 is operated, and the roller 51 is separated upward from the cloth guide plate 39. In the timing chart shown in FIG. 11, when the number of stitches counted from the start of sewing of the sewing machine 1 has reached k5, it is known that the sewing start portion has reached just before the roller 51. Based on this, the electric signal of the cylinder 42 is turned off, the rod 43 is contracted, and the roller 51 is separated from the cloth guide plate 39. The details of the subsequent operation are the same as in the first embodiment, and a description thereof will be omitted.
【The invention's effect】
As described above, according to the present invention, it is possible to accurately convey one end edge of the rubber knitted tubular rib and sew it with the tubular cloth. By supporting the cloth in a natural circumferential state, the quality of sewing with the rubber knitted tubular rib can be improved. In the invention of claim 2, the rubber knitted tubular rib having different thickness and elasticity can be used. Correspondingly, by adjusting the conveying force for conveying the rubber knitted cylindrical rib in a direction intersecting the cloth feeding direction, it is possible to improve the quality of sewing with the cylindrical cloth. According to the third aspect of the present invention, the cylindrical cloth conveyed while being sewn during the stitching is supported so that the cloth guide does not disturb, so that the contact surface between the sewing objects is reduced, and the sewing with the rubber knitted cylindrical rib is completed. According to the invention of claim 4, the transport force for transporting the rubber knitted tubular ribs in a direction intersecting with the cloth feeding direction corresponding to the rubber knitted tubular ribs having different thicknesses and elasticities can be improved. The quality of sewing with the tubular cloth can be improved by adjusting it. According to the fifth aspect of the present invention, the tubular cloth conveyed while being sewn during sewing is held between the cloth guide and the auxiliary conveying roller. By transporting in a state in which the rubber rib is knitted, the quality of sewing with the rubber knitted tubular rib can be improved.
[Brief description of the drawings]
FIG. 1 is a schematic side view showing a first embodiment of a sewing machine according to the present invention.
FIG. 2 is a structural explanatory view (plan view) of the rib support shown in FIG. 1;
FIG. 3 is a structural explanatory view (front view) of the rib support shown in FIG. 1;
FIG. 4 is an explanatory view showing an operation state of the sewing machine shown in the first embodiment.
FIG. 5 is an explanatory diagram showing an operation state of the sewing machine shown in the first embodiment.
FIG. 6 is an explanatory diagram showing an operation state of the sewing machine shown in the first embodiment.
FIG. 7 is a timing chart showing an operation state of the sewing machine shown in the first embodiment;
FIG. 8 is a schematic side view showing a second embodiment of the sewing machine according to the present invention.
FIG. 9 is a structural explanatory view (a front view) of the auxiliary transport roller shown in FIG. 8;
10 is a structural explanatory view of the auxiliary transport roller shown in FIG. 8 (bottom view).
FIG. 11 is a timing chart showing an operation state of the sewing machine shown in the second embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Sewing machine, 5 ... Needle plate, 6 ... Cylinder bed, 7 ... Lower feed dog, 10 ... Upper feed dog, 13 ... Cylinder, 15 ... Rib support Table, 19 ... Support base, 22 ... Angle adjusting member, 23 ... Adjustment screw, 24 ... Shaft, 25 ... Roller, 26 ... Rodless cylinder, 27 ...・ Guiding body, 28 ・・・ Cylinder, 30 ・・・ Dough guide, 40 ・・・ Auxiliary transport roller, 51 ・・・ Roller, W ・・・ Cylindrical cloth, R ・・・ Rubber knitting Tubular rib

Claims

A rubber-knitted cylindrical rib and a cylindrical cloth having a circumferential length larger than the circumferential length of the cylindrical rib are supported from the inside by a cylinder bed, and the cylinder is formed by a lower feed dog that protrudes and retracts from a needle plate provided on the cylinder bed. In the sewing machine which feeds the cylindrical ribs and sews the cylindrical cloth with the upper feed dog, and sews the cylindrical ribs and the cylindrical cloth, the cloth feeding direction and the cloth feeding direction are orthogonal to the cylinder-bed. A fabric guide supporting the cylindrical cloth in cooperation with a cylinder bed, and a rib support provided between the fabric guide and the cylinder bed and movable in a cloth feeding direction. And a rib support is provided rotatably about an axis intersecting the cloth feeding direction, a part of which protrudes from the outer surface of the rib support, and the protrusion and the cylinder-bed cooperate to form the cylindrical member. Hold ribs When the plurality of rollers and the cylindrical ribs are set on the sewing machine, the rib support is set to a position close to the cylinder bed, and after the setting, the rib support is set to a position separated from the cylinder bed. A rib support driving means for moving in the cloth feeding direction, and when the tubular cloth is set on the sewing machine, at a position separated from the rib support, at a predetermined speed toward the rib support with the start of sewing of the sewing machine. A sewing machine comprising : a cloth guide driving means for moving the cloth guide in the cloth feeding direction, and moving the cloth guide to the right side so as to deviate from the sewing line of the sewing machine when the cloth guide approaches the rib support. .

2. The sewing machine according to claim 1, wherein the shaft is rotatable around an intersection of the shaft and an axis of the cloth feeding direction to adjust a mounting angle of the shaft.

A rubber-knitted cylindrical rib and a cylindrical cloth having a circumferential length larger than the circumferential length of the cylindrical rib are supported from the inside by a cylinder bed, and the cylinder is formed by a lower feed dog that protrudes and retracts from a needle plate provided on the cylinder bed. In the sewing machine that feeds the cylindrical ribs and sews the cylindrical cloth with the upper feed dog, and sews the cylindrical ribs and the cylindrical cloth, the sewing machine can move in the direction perpendicular to the cloth feeding direction with respect to the cylinder-bed. A cloth guide that supports the tubular cloth in cooperation with the cylinder bed, a rib support that is movable in the cloth feeding direction with respect to the cylinder bed, and an axis that intersects the cloth feeding direction. A plurality of rotatable members rotatably provided on the rib support, partially protruding from the outer surface of the rib support, and the protruding portion and the cylinder bed cooperating to hold the cylindrical rib. And the cylindrical rib When setting the sewing machine to the sewing machine, the rib support table is set at a position close to the cylinder-bed, and after the setting, the rib support table driving means for moving the rib support table in the cloth feeding direction so as to be separated from the cylinder-bed, A sewing machine , comprising : a cloth guide driving means for moving the cloth guide to the right side so as to be disengaged from the sewing line of the sewing machine when the sewing start end approaches the cloth guide during suturing.

4. The sewing machine according to claim 3, wherein the shaft can be rotated about an intersection of the shaft and an axis of the cloth feeding direction to adjust a mounting angle of the shaft.

The fabric guide is provided with an auxiliary transport roller facing the guide, the auxiliary transport roller cooperates with the fabric guide at the start of sewing to hold the tubular cloth, and a fabric guide driving means during suturing. 4. The sewing machine according to claim 3, wherein the pinching of the cloth guide with the cloth guide is released before the cloth guide moves.