JP3790894B2

JP3790894B2 - Empty ring stitching method and apparatus

Info

Publication number: JP3790894B2
Application number: JP2001382337A
Authority: JP
Inventors: 貴義正岡
Original assignee: Yamato Sewing Machine Mfg Co Ltd
Current assignee: Yamato Sewing Machine Mfg Co Ltd
Priority date: 2001-11-08
Filing date: 2001-11-08
Publication date: 2006-06-28
Anticipated expiration: 2021-11-08
Also published as: JP2003144786A; CN1417399A; TW200302306A; CN100393929C; TWI235774B

Description

【０００１】
【発明の属する技術分野】
本発明は、例えばニットＴシャツ、アウトウェア、肌着等の袖口や脇合わせ、ブリーフやショーツ等の脇合わせなどの縫製に適用される縁かがり縫いミシンによる空環縫い込み方法及び装置に関し、詳しくは、先行縫製生地の縫い終り時に残存する空環を吸引管で吸引保持し、この空環吸引管の縫製進行方向とは逆方向への揺動により針落ち部の手前側に引張って後続縫製生地の縫い始め端の縫い目中に引き込んで縁かがり縫いミシンにより縫い込む通称、バックタック縫製を行なうことによって、縫い始め端部のほつれを防止する空環縫い込み方法及び装置に関するものである。
【０００２】
【従来の技術】
この種の空環縫い込み方法を実施する空環縫い込み装置として、従来では、図１１に示すように、針落ち部１及びこの針落ち部１を基端として縫製進行方向Ｘへ向けて突出形成された縫い目形成用爪部２を有する針板３の上部に縫製生地を該針板３上面に押圧する押え金４が設けられているとともに、針板３の上方右側部には、先行縫製生地の縫い終り時に針板３の爪部２に巻き付いた空環部分に連なる空環Ａを吸い込み切断した後、その切断空環を吸い込み方向とは逆方向へ吹き返す空環切り装置（周知であるため、図示及び詳細な構成の説明は省略する）により吹き返された空環Ａを吸引保持し、次の縫製開始に伴って縫製進行方向Ｘとは逆方向Ｙへ揺動して吸引保持した空環Ａを針落ち部１の手前側に引張って後続縫製生地の縫い始め端の縫い目中に引き込む空環吸引管５が設けられている。
【０００３】
また、押え金４の側端部には、空環押え爪６が左右位置調整自在に固定されている。この空環押え爪６は、図１２及び図１３に示すように、針板３の針落ち部１及び爪部２に対して縮小相似形状の針落ち部６ａ及び爪部６ｂを有するとともに、空環吸引管５により針落ち部１，６ａの手前側に引張られる空環Ａを押え金４の裏面側に滑り落ち移行させるような傾斜面を持つ空環ガイド部６ｃ及びこの空環ガイド部６ｃにより裏面側に滑り落ち移行された空環Ａを嵌合保持して該空環Ａを縫製進行方向Ｘと平行な姿勢で後続縫製生地の縫い始め端の縫い目中に引き込み案内する溝６ｄが形成されている。
【０００４】
上記のごとき構成からなる従来の空環縫い込み装置によれば、空環吸引管５の揺動動作により針落ち部１，６ａの手前側に引張られる空環Ａは空環押え爪６の空環ガイド部６ｃの傾斜面を滑り落ちて裏面の案内溝６ｄに嵌合保持され、この案内溝６ｄにより縫製進行方向Ｘと平行な姿勢にガイドされることになり、その結果、図１４に示すように、縁かがり縫いミシンによる後続縫製生地Ｗの縫製開始に伴い、空環Ａはその縫い始め端Ｗｅの縫い目Ｓ中で該縫い目Ｓを形成する針糸ｎｙに対しほぼ平行に引き込まれて上ルーパ糸１ｙのみで押え付けられる状態に縫い込まれることになる。
【０００５】
【発明が解決しようとする課題】
上記のような従来の空環縫い込み装置による空環縫い込み方法では、後続縫製生地Ｗの縫い始め端Ｗｅの縫い目Ｓ中に引き込まれた空環Ａが上ルーパ糸１ｙのみにより押え付けられているだけであるから、例えば縫製品、特に、滑りやすい性質の生地や糸を使用して縫製された縫製品を洗濯する場合等のように、縫製生地Ｗに激しい力が加わったとき、折角縫い込んだ空環Ａが縫い目Ｓから抜け出して縫い始め端縁Ｗｅより飛び出し風合いを損ねたり、その飛び出しに起因してバックタック縫製本来のほつれ防止機能が低下しやすくなるという問題があった。
【０００６】
本発明は上記のような実情に鑑みてなされたもので、縫い始め端の縫い目中に引き込んだ空環が洗濯時などに激しい力を受けても不測に抜け出ることがないように確実に縫い目中に縫い込み保持させることができる空環縫い込み方法及びそのような縫い込みを簡単な構成改良で実現できる空環縫い込み装置を提供することを目的としている。
【０００７】
【課題を解決するための手段】
上記目的を達成するために、本発明に係る空環縫い込み方法は、先行縫製生地の縫い終り時に吸い込まれて該先行縫製生地から切断された空環を吸引保持する空環吸引管の縫製進行方向とは逆方向への揺動動作により、切断後の空環を針落ち部の手前側に引張って後続縫製生地の縫い始め端の縫い目中に引き込んで縁かがり縫いミシンにより縫い込む空環縫い込み方法であって、
上記空環吸引管により針落ち部の手前側に引き込まれる空環の少なくとも一部を針落ち部に対して後続縫製生地の側端縁とは反対側に変位移動させて、その変位移動した空環の少なくとも一部を後続縫製生地の縫い目を形成する針糸で縫い付けることを特徴とするものである。
【０００８】
上記のような特徴を有する本発明方法によれば、先行縫製生地の縫い終り時に吸い込み切断され、かつ、空環吸引管の揺動動作によって針落ち部の手前側に引張って後続縫製生地の縫い始め端の縫い目中に引き込まれた空環はその少なくとも一部が縫い目を形成する針糸で縫い付けられているので、縫製品の洗濯時等のように、縫製生地に激しい力が加わったとしても、縫い目中に縫い込まれた空環が縫い目から抜け出ることが確実に防止され、常に良好な風合いを維持することが可能であるとともに、バックタック縫製本来のほつれ防止機能を確保することが可能である。
【０００９】
また、上記空環縫い込み方法を実施するための本発明に係る空環縫い込み装置は、先行縫製生地の縫い終り時に吸い込まれて該先行縫製生地から切断された空環を後続縫製生地の縫い始め端の縫い目中に引き込んで縁かがり縫いミシンにより縫い込むように構成されている空環縫い込み装置であって、
縫製生地を針板に押圧する押え金と、この押え金の上部に設置されて先行縫製生地から切断された空環を吸引保持するとともに後続縫製生地の縫製開始に伴って縫製進行方向とは逆方向へ揺動動作して吸引した空環を針落ち部の手前側に引張って後続縫製生地の縫い始め端の縫い目中に引き込む空環吸引管と、上記押え金の側端部に固定されて空環吸引管の揺動動作により針落ち部の手前側に引張られる空環を押え金の裏面側に移行させる空環ガイド部及びこの空環ガイド部により裏面側に移行された空環を嵌合保持して該空環の縫い目中への引き込みを案内する溝が形成された空環押え爪とを具備し、この空環押え爪裏面の引き込み用案内溝の両側で対向位置する一対の空環案内面部のうち縫製生地の側端縁からは遠い側の空環案内面部は、縫製生地の側端縁に最も近い針落ち部に対して縫製生地の側端縁とは反対側に変位されており、上記空環吸引管により針落ち部の手前側に引き込まれる空環の少なくとも一部を上記変位空環案内面部側に変位移動させる手段を設けていることを特徴とするものである。
【００１０】
上記のような特徴構成を有する本発明装置によれば、空環吸引管により針落ち部の手前側に引張られる空環が空環押え爪のガイド部を経て該押え爪の裏面側に滑り落ち移行して引き込み用案内溝に嵌合保持された状態で、この空環の少なくとも一部が、案内溝両側の一対の空環案内面部のうち縫製生地の側端縁からは遠い側に変位されている空環案内面部側に変位移動される。これによって、空環の少なくとも一部を縫い目を形成する針糸で縫い付けることが可能となり、上述したとおり縫製品の洗濯時等のように、縫製生地に激しい力が加わったとしても、縫い目中に縫い込まれた空環が縫い目から抜け出ることを確実に防止し、常に良好な風合いを維持し、かつ、バックタック縫製本来のほつれ防止機能を確保することが可能である。また、本発明装置では、空環押え爪裏面の引き込み用案内溝の一方の案内面部を変位させるという極く簡単な構成改良を施すだけで上記のような良好な風合いを維持し、かつ、本来のほつれ防止機能を確保できる空環抜止め状態での空環縫い込み作用を確実、容易に実現することが可能である。
【００１１】
上記構成の本発明に係る空環縫い込み装置において、空環の少なくとも一部を変位空環案内面部側に変位移動させる手段としては、請求項３に記載のように、空環吸引管の揺動動作により針落ち部の手前側に引張られる空環の引張り経路に対して交差する方向に進出後退駆動移動自在に設けられた空環押込案内装置であっても、請求項４に記載のように、空環を吸引保持して該空環を針落ち部の手前側に引張る空環吸引管で兼用すべく構成したものであってもよい。このうち、特に、空環吸引管で空環の変位移動手段を兼用させるように構成する場合は、針板の右側部に広いスペースを要する進出後退駆動移動自在な空環押込案内装置を設置する必要がなくなり、装置コストの低減化及び小型化を図ることができる。
【００１２】
【発明の実施の形態】
以下、本発明の実施の形態を図面にもとづいて説明する。
図１は本発明に係る空環縫い込み方法を実施するために用いられる空環縫い込み装置を備えた縁かがり縫いミシンの概略斜視図、図２は空環縫い込み装置の主要部の拡大平面図である。なお、本発明に係る空環縫い込み装置において、図１１〜図１３に示した従来の空環縫い込み装置と共通する構成要素については同一の符号を付してそれらの説明を省略あるいは簡略化し、主として従来装置と相違する構成を中心に説明する。
【００１３】
図１において、１１は縁かがり縫いミシンＭのクロスプレートで、このクロスプレート１１の所定位置には、針落ち部１及び縫い目形成用爪部２（図２参照）を有する針板３が固定されており、縫い目形成用爪部２の基端近くの手前部には生地端切断用メス２０（図面上では可動上メス部のみを示し、固定下メス部は省略する）が設けられている。また、針板３の上部には、後述する空環押え爪６を固定した押え金４のほかに、ミシンベッド部１２に支持された針棒１３、針止め１３ａを介して上記針落ち部１に対し上下に駆動往復運動自在な針１４及び針板３の上面への縫製生地の有無を検知して縫製生地有り（暗状態）のとき、ミシンの回転を許容する生地センサー（図示省略）が設けられているとともに、針板３に対して縫製進行方向Ｘの後方右側には空環切り装置（周知であるため、図示省略）が配置され、かつ、針板３の右側部には空環吸引管５が支点回転軸１５の周りに駆動揺動自在に配置され、さらに、この空環吸引管５の手前には、ミシンベッド部１２に取付台１６を介して装着された空環押込案内装置１７が配置されている。
【００１４】
上記空環吸引管５は、図３に明示するように、空環切り装置により切断された後、吹き返される空環Ａを受け取って吸入保持する第１位置とその空環Ａの吸入保持状態で上記針板３の縫い目形成用爪部２の基端近くの手前部の生地端切断用メス２０の近傍位置に後退揺動して待機する第２位置と空環Ａの縫い込み動作の開始に伴って第２位置よりさらに縫製進行方向Ｘとは逆方向Ｙへ後退揺動して空環Ａを後続縫製生地Ｗの縫い始め端Ｗｅの縫い目中に引き込む第３位置とに亘って支点回転軸１５の周りに駆動揺動自在に構成されている。
【００１５】
また、上記押え金４の側端部に左右位置調整自在に固定されている空環押え爪６は、図４及び図５に示すように、針板３の針落ち部１及び爪部２に対して縮小相似形状の針落ち部６ａ及び爪部６ｂ、空環吸引管５により針落ち部１，６ａの手前側に引張られる空環Ａを押え金４の裏面側に滑り落ち移行させるような傾斜面を持つ空環ガイド部６ｃ及びこの空環ガイド部６ｃにより裏面側に滑り落ち移行された空環Ａを嵌合保持して該空環Ａの後続縫製生地Ｗの縫い目Ｓ中への引き込みを案内する溝６ｄを有している。この空環押え爪６裏面の引き込み用案内溝６ｄの両側で対向位置する一対の空環案内面部６ｅ，６ｆのうち縫製生地Ｗの側端縁からは遠い側の空環案内面部６ｅは、縫製生地Ｗの側端縁に最も近い針落ち部１，６ａに対して縫製生地Ｗの側端縁とは反対の左側に変位されている。
【００１６】
さらに、上記空環押込案内装置１７は、取付台１６に固定保持されたエアシリンダ１８とこのエアシリンダ１８のピストンロッド１８ａ先端に固定連結された空環押込案内具１９とからなり、空環押込案内具１９の先端には略Ｖ字形状の空環引掛部１９ａが形成されている。この空環押込案内装置１７は、通常、その押込案内具１９が図１及び図６の実線に示すように、針板３及び押え金４の斜め右上方位置に後退待機しており、上記空環吸引管５の第２位置から第３位置への揺動移動に連動して図１の矢印、図２の仮想線及び図７の実線に示すように、空環Ａの引張り経路に対して交差する斜め左下方向Ｚに進出移動することにより、先端の空環引掛部１９ａが針落ち部１，６ａの手前側に引き込まれた空環Ａの一部を空環押え爪６における変位案内面部６ｅ側に押し込んで変位移動させるように構成されている。
【００１７】
次に、上記のように構成された縁かがり縫いミシンの空環縫い込み装置による空環縫い込み方法について、図６，図７の動作状態変化図及び図８のタイミングチャートを参照して説明する。
【００１８】
先行縫製生地の縫い終り端が生地センサーを通過し該センサーが非検知（明状態）となった時点で空環切り装置が吸い込みを開始して残存する空環を吸い込むとともに、公知の糸緩め装置がＯＮして糸を緩める一方、縁かがり縫いミシンＭは予め設定された運針数に達するまで回転を続けその間に一定長さの空環が形成される。設定運針数に達すると、ミシンＭの回転が停止し、上記空環切り装置が吸い込んで空環を切断するとともに、その切断した空環を吸い込み方向とは逆方向へ吹き出し、その直後に図３の第２位置に待機していた空環吸引管５が第１位置に移動するとともに、吸い込みを開始して空環切り装置より吹き出される空環Ａを吸引保持した後、再び第２位置に揺動移動して待機すると同時に、押え金４は針板３の上面から離間するように上昇する。この状態で、ペダルをＯＦＦすることにより先行縫製生地の縫製が完了する。
【００１９】
次に、上記空環吸引管５に吸入保持された空環Ａが該吸引管５の第２位置への揺動移動により針板３の針落ち部１よりも手前に引き込まれた状態で、次の後続縫製生地Ｗがその縫い始め端縁Ｗｅを縫製進行方向Ｘで生地端縁切断用メス２０とほぼ同一線上に位置するように針板３上にセットされ、上記生地センサーがそれを検知（暗状態）すると、押え金４が針板３の上面に当接するように下降するとともに、糸緩め装置がＯＦＦとなって糸緩めを解除し、縫製開始が可能な態勢となる。
【００２０】
この状態で、ペダルをＯＮすると、ミシンＭが回転し始めて縫製生地Ｗが縫製進行方向Ｘに向けて、その縫い始め端縁ｅが針板３の針落ち部１に到達するまで送られる。この間に針板３の縫い目形成用爪部２に巻き付いている空環Ａは、該爪部３に巻き付いたままである。
【００２１】
さらに、縫製生地Ｗが縫製進行方向Ｘに送られて、その縫い始め端縁ｅが針板３の縫い目形成用爪部２の先端付近の位置にまで達して縫い始め端縁ｅから生地端縁切断用上メス２０までの寸法が所定長さとなる位置に達したとき、ミシンＭの回転が一旦、所定時間に亘って停止されると同時に、上記空環吸引管５が第２位置から図３の第３位置に揺動移動して空環Ａを図６に明示するように、針落ち部１，６ａの手前側に引張ることになり、これによって、空環Ａは空環押え爪６における空環ガイド部６ｃにより裏面側に滑り落ち移行されて裏面の引き込み用案内溝６ｄに嵌合保持される。
【００２２】
その直後に空環押込案内装置１７が作動して空環押込具１９が図７に明示するように、斜め左下方向に進出移動し、これに伴って押込案内具１９先端の引掛部１９ａを介して空環Ａの一部が空環押え爪６裏面の案内溝６ｄを形成する一方の変位案内面部６ｅ側に押し込み変位移動されることになり、その後、空環吸引管５による空環Ａの吸引保持が解除される。
【００２３】
そして、一旦停止後のミシンＭが所定の回転に復帰することにより、後続縫製生地Ｗが縫製進行方向Ｘに送られて縫製を開始し、この縫製開始の初期の運針で生地端切断用メス２０の切断部に押し込まれた空環Ａが縫製生地Ｗの側端部と共にメス２０により切断され、その切断された空環部分が縫製生地Ｗの縫い始め端の縫い目Ｓ中に引き込まれて縫い込まれることになるが、このとき、空環Ａの一部が空環押え爪６裏面の案内溝６ｄを形成する一方の変位案内面部６ｅ側に押し込み変位移動されているので、図９に示すように、縫製生地Ｗの縫い目Ｓ中に引き込まれた空環Ａの一部Ａ１が縫い目Ｓを形成する針糸ｎｙで縫い付けられることになる。したがって、縫製品の洗濯時等のように、縫製生地Ｗに激しい力が加わったとしても、縫い目Ｓ中に縫い込まれた空環Ａが縫い目Ｓから抜け出ることが確実に防止され、常に良好な風合いが維持されるとともに、バックタック縫製本来のほつれ防止機能が確保されることになる。
【００２４】
さらに、上記のような空環縫い込み後の地縫い時の運針数が所定値に達した時点で、上記空環押込案内装置１７は、図１の実線に示す斜め右上方位置に復帰移動し、かつ、空環吸引管５は第２位置に復帰して次の空環縫い込みに備えられることになる。
【００２５】
なお、上記実施の形態では、空環Ａの一部を押え爪６裏面の案内溝６ｄの一方の変位案内面部６ｅ側に押し込み変位移動させる手段として、図１や図６，図７に示したような構成の空環押込案内装置１７を使用した例で説明したが、これに代えて、図１０に示すように、空環吸引管５の第２位置から第３位置への揺動時における先端移動軌跡が図２に示すものに比べて左寄りとなるように、支点回転軸１５の位置をエキセンカム等を用いて偏位させて、この空環吸引管５で空環Ａの一部を変位案内面部６ｅ側に押し込み変位移動させる手段を兼用すべく構成してもよい。このように空環吸引管５で空環Ａの変位移動手段を兼用すべく構成する場合は、針板３の右側部に広い設置スペースを要する空環押込案内装置１７が不要となり、装置全体のコストの低減化及び小型化を図ることができる。
【００２６】
また、空環Ａの一部を押え爪６裏面の案内溝６ｄの一方の変位案内面部６ｅ側に押し込み変位移動させる手段としては、上記の各実施の形態以外に、針板３及び押え金４の斜め右上方位置に空環吹き付けノズルを設け、このノズルから吹き出したエアを空環Ａに吹き付けるようにしたり、針板３及び押え金４の斜め左上方位置に空環吸引ノズルあるいは進出後退駆動移動自在な空環引掛け具を設置して、これら空環吸引ノズルによる空環吸引作用あるいは空環引掛け具による空環の引掛け引込み作用で空環Ａの一部を変位案内面部６ｅ側に変位移動させるように構成してもよい。
【００２７】
さらに、上記実施の形態では、２本針の縁かがり縫いミシンＭを図示したが、１本針や３本針の縁かがり縫いミシンに適用しても、上記したと同様な作用効果が奏されるものである。
【００２８】
【発明の効果】
以上のように、本発明によれば、先行縫製生地の縫い終り時に空環吸引管の揺動動作によって針落ち部の手前側に引張って後続縫製生地の縫い始め端の縫い目中に引き込まれた空環の少なくとも一部が縫い目形成用の針糸で縫い付けられるように空環を縫い込んでいるので、縫製品の洗濯時等のように、縫製生地が激しい力を受けたとしても、縫い込んだ空環が縫い目から不測に抜け出ることを確実に防止することができ、したがって、空環が縫い始め端縁より飛び出して風合いを損ねたり、その飛び出しに起因してバックタック縫製本来のほつれ防止機能を低下したりすることなく、常に良好な風合いを維持するとともに、バックタック縫製本来のほつれ防止機能を長期間に亘り確保することができるという効果を奏する。
【００２９】
また、装置的には、空環押え爪裏面の引き込み用案内溝の一方の案内面部を変位させるという極く簡単な構成改良を施すだけで上記のような良好な風合いを維持し、かつ、本来のほつれ防止機能を確保できる空環抜止め状態での空環縫い込み作用を確実、容易に実現することができるという効果を奏する。
【図面の簡単な説明】
【図１】本発明に係る空環縫い込み方法を実施するために用いられる空環縫い込み装置を備えた縁かがり縫いミシンの概略斜視図である。
【図２】同上空環縫い込み装置における主要部である針板周辺の拡大平面図である。
【図３】同上空環縫い込み装置における空環吸引管の構成及び動作を示す要部の拡大一部切欠き平面図である。
【図４】同上空環縫い込み装置における空環押え爪の構成を示す要部の拡大平面図である。
【図５】図４のＢ−Ｂ線断面図である。
【図６】同上空環縫い込み装置における空環押込案内装置の非作動状態を示す要部の拡大斜視図である。
【図７】同上空環縫い込み装置における空環押込案内装置の作動状態を示す要部の拡大斜視図である。
【図８】同上空環縫い込み装置における動作タイミングを説明するタイミングチャートである。
【図９】空環縫い込み後の縫製品の一部を拡大して示す斜視図である。
【図１０】本発明に係る空環縫い込み方法を実施するために用いられる空環縫い込み装置の変形例の主要部である針板周辺の拡大平面図である。
【図１１】従来の空環縫い込み装置における主要部である針板周辺の拡大平面図である。
【図１２】従来の空環縫い込み装置における空環押え爪の構成を示す要部の拡大平面図である。
【図１３】図１２のＣ−Ｃ線断面図である。
【図１４】従来の空環縫い込み装置による空環縫い込み後の縫製品の一部を拡大して示す斜視図である。
【符号の説明】
１針落ち部
３針板
４押え金
５空環吸引管
６空環押え爪
６ｃ空環ガイド部
６ｄ空環引き込み用案内溝
６ｅ，６ｆ空環案内面部
１７空環押込案内装置
Ａ空環
Ｗ縫製生地
Ｗｅ縫い始め端
Ｓ縫い目
ｎｙ針糸[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ring stitch sewing method and apparatus using an edge stitch sewing machine, which is applied to sewing of cuffs and side-to-sides such as knit T-shirts, outwear and underwear, and side-by-sides such as briefs and shorts. The empty ring remaining at the end of the sewing of the preceding sewing fabric is sucked and held by the suction tube, and the subsequent sewing fabric is pulled by pulling the empty ring suction tube toward the front side of the needle drop portion by swinging in the direction opposite to the sewing progressing direction. The present invention relates to a blank ring stitching method and apparatus for preventing fraying at a sewing start end portion by performing back tack sewing by pulling it into a seam at the sewing start end and sewing it with an edge stitch sewing machine.
[0002]
[Prior art]
As shown in FIG. 11, conventionally, as an empty ring stitching device for performing this kind of blank stitching method, as shown in FIG. 11, the needle drop portion 1 and the needle drop portion 1 as a base end protrude toward the sewing progress direction X. A presser foot 4 is provided on the upper portion of the needle plate 3 having the formed seam forming claw portion 2 and presses the sewing fabric against the upper surface of the needle plate 3. An idle ring cutting device (known in the art) that sucks and cuts the empty ring A connected to the empty ring portion wound around the claw portion 2 of the needle plate 3 at the end of sewing of the fabric, and blows back the cut empty ring in the direction opposite to the suction direction. Therefore, the empty ring A blown back by suction is held by suction, and when the next sewing starts, the empty ring A is swung in the direction Y opposite to the sewing progress direction X and sucked and held. Pull the ring A toward the front side of the needle entry part 1 and start sewing the subsequent sewing fabric. Check ring suction tube 5 to draw in seam is provided.
[0003]
Further, an empty ring presser claw 6 is fixed to the side end of the presser foot 4 so that the left and right positions can be adjusted. As shown in FIGS. 12 and 13, the empty ring presser claw 6 includes a needle drop portion 6 a and a claw portion 6 b that are similar in size to the needle drop portion 1 and the claw portion 2 of the needle plate 3, and is An empty ring guide portion 6c having an inclined surface that causes the empty ring A, which is pulled to the near side of the needle drop portions 1 and 6a by the ring suction tube 5, to slide down to the back side of the presser foot 4 and the empty ring guide portion 6c. Thus, a groove 6d is formed for fitting and holding the hollow ring A that has been slid down to the back side and pulling the hollow ring A into the stitches at the sewing start end of the subsequent sewing fabric in a posture parallel to the sewing progress direction X. Has been.
[0004]
According to the conventional empty ring stitching device having the above-described configuration, the empty ring A that is pulled to the front side of the needle drop portions 1 and 6 a by the swinging operation of the empty ring suction pipe 5 is the empty of the empty ring presser claw 6. The inclined surface of the ring guide portion 6c slides down and is fitted and held in the guide groove 6d on the back surface, and is guided by the guide groove 6d in a posture parallel to the sewing progress direction X. As a result, as shown in FIG. Thus, with the start of sewing of the subsequent sewing fabric W by the edge stitching sewing machine, the empty ring A is pulled in substantially parallel to the needle thread ny forming the seam S in the seam S of the sewing start end We. The sewing machine is sewn into a state where it can be pressed only by the looper thread 1y.
[0005]
[Problems to be solved by the invention]
In the empty ring stitching method using the conventional empty ring stitching device as described above, the empty ring A drawn into the seam S at the sewing start end We of the subsequent sewing fabric W is pressed only by the upper looper thread 1y. When a strong force is applied to the sewing fabric W, such as when washing sewn products, especially sewn products sewn using slippery fabrics and threads, etc. There is a problem that the hollow ring A that has been pulled out of the seam S is lost from the sewing start edge We and the texture of the jump is lost, or the original fraying prevention function of back tack sewing is likely to deteriorate due to the protrusion.
[0006]
The present invention has been made in view of the above circumstances, and it is ensured that the empty ring pulled into the stitches at the sewing start end does not come out unexpectedly even when subjected to intense force during washing or the like. It is an object of the present invention to provide an empty ring stitching method that can be sewn and held, and an empty ring stitching device that can realize such stitching with a simple configuration improvement.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the empty ring stitching method according to the present invention is a method of sewing an empty ring suction pipe that sucks and holds an empty ring that is sucked at the end of sewing of the preceding sewing fabric and cut from the preceding sewing fabric. With the swinging motion in the opposite direction to the direction, pull the empty ring after cutting to the front side of the needle drop part, pull it into the stitches at the sewing start end of the subsequent sewing fabric, and sew it with the edge stitch machine. Method,
At least a part of the empty ring drawn to the front side of the needle drop portion by the empty ring suction tube is displaced to the side opposite to the side edge of the subsequent sewing fabric with respect to the needle drop portion, and the displaced empty space is moved. It is characterized in that at least a part of the ring is sewn with a needle thread that forms a seam of the subsequent sewing fabric.
[0008]
According to the method of the present invention having the above-described features, the subsequent sewing fabric is sewn by being sucked and cut at the end of the sewing of the preceding sewing fabric and pulled toward the front side of the needle drop portion by the swinging operation of the free ring suction tube. At least a part of the empty ring drawn into the seam at the start end is sewn with the needle thread that forms the seam, so if a strong force is applied to the sewing fabric, such as when washing the sewing product In addition, it is possible to reliably prevent the empty ring sewn into the seam from coming out of the seam, to maintain a good texture at all times, and to ensure the fraying prevention function inherent to back tack sewing. It is.
[0009]
In addition, an empty ring stitching device according to the present invention for carrying out the above-described empty ring stitching method includes sewing an empty ring sucked at the end of sewing of a preceding sewing fabric and cut from the preceding sewing fabric into the subsequent sewing fabric. A free ring stitching device configured to be pulled into a seam at the start end and stitched by an edge stitch sewing machine,
The presser foot that presses the sewing fabric against the needle plate and the empty ring that is installed above the presser foot and cut from the preceding sewing fabric is sucked and held, and the reverse of the sewing progress direction with the start of sewing of the subsequent sewing fabric. Fixed to the side ring of the presser foot and the empty ring suction pipe that pulls the idle ring that is swung in the direction and pulls it into the seam at the sewing start end of the subsequent sewing fabric. Fits an empty ring guide part that moves the empty ring pulled to the front side of the needle drop part by the swinging movement of the empty ring suction pipe to the back side of the presser foot and an empty ring that has been transferred to the back side by this empty ring guide part A pair of empty gripping claws formed with grooves that guide and hold the hollow ring into the seam, and are opposed to each other on both sides of the pull-in guide grooves on the back surface of the hollow ring holding claw. The ring guide surface portion of the ring guide surface portion far from the side edge of the sewing fabric is The needle drop portion closest to the side edge of the sewing fabric is displaced to the side opposite to the side edge of the sewing fabric, and at least an empty ring drawn into the front side of the needle drop portion by the empty ring suction tube. Means is provided for displacing a part of the displacement to the displacement ring guide surface side.
[0010]
According to the device of the present invention having the above-described characteristic configuration, the empty ring pulled toward the front side of the needle drop portion by the empty ring suction tube slides down to the back side of the presser claw through the guide portion of the empty ring holding claw. In a state where the guide ring is fitted and held in the pull-in guide groove, at least a part of the ring is displaced to the side farther from the side edge of the sewing fabric among the pair of ring guide surfaces on both sides of the guide groove. It is displaced and moved to the empty guide surface part side. As a result, it is possible to sew at least a part of the empty ring with the needle thread that forms the seam. Even if a strong force is applied to the sewing fabric as in the case of washing the sewing product as described above, It is possible to reliably prevent the empty ring sewn into the seam from coming out of the seam, to maintain a good texture at all times, and to ensure the original fraying prevention function of back tack sewing. Further, in the device of the present invention, the above-mentioned good texture can be maintained only by making a very simple configuration improvement by displacing one guide surface portion of the pull-in guide groove on the back surface of the empty ring presser claw, and originally It is possible to surely and easily realize the operation of stitching the empty ring in the state where the empty ring is prevented from being loosened.
[0011]
In the empty ring stitching device according to the present invention having the above-described configuration, as the means for displacing and moving at least a part of the empty ring toward the displacement empty ring guide surface portion, as described in claim 3, the empty ring suction tube is swung. The idle ring pushing guide device provided so as to be movable forward and backward in a direction intersecting with the pulling path of the idle ring pulled to the near side of the needle drop portion by the moving operation as described in claim 4. In addition, the air ring may be configured to be used as an air ring suction pipe that sucks and holds the air ring and pulls the air ring toward the front side of the needle drop portion. Among these, in particular, in the case where the empty ring suction pipe is also used as a displacement moving means for the empty ring, an empty ring pushing guide device that can move forward, backward, and move, requiring a large space, is installed on the right side of the needle plate. This eliminates the need to reduce the device cost and reduce the size.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic perspective view of an edge stitch sewing machine equipped with an empty ring stitching device used for carrying out the empty ring stitching method according to the present invention, and FIG. 2 is an enlarged plan view of a main part of the empty ring stitching device. FIG. In the empty ring stitching device according to the present invention, the same components as those in the conventional empty ring stitching device shown in FIGS. 11 to 13 are denoted by the same reference numerals, and description thereof is omitted or simplified. The description will mainly focus on the configuration different from the conventional apparatus.
[0013]
In FIG. 1, reference numeral 11 denotes a cross plate of an edge stitch sewing machine M. A needle plate 3 having a needle drop portion 1 and a seam forming claw portion 2 (see FIG. 2) is fixed to a predetermined position of the cross plate 11. A cloth edge cutting knife 20 (only the movable upper knife part is shown in the drawing, and the fixed lower knife part is omitted) is provided near the proximal end of the seam forming claw part 2. In addition to the presser foot 4 to which an empty presser foot 6 to be described later is fixed, an upper portion of the needle plate 3 is connected to the needle drop portion 1 through a needle bar 13 supported by the sewing machine bed portion 12 and a needle stopper 13a. On the other hand, a cloth sensor (not shown) that allows the sewing machine to rotate when a sewing cloth is present (dark state) by detecting the presence or absence of sewing cloth on the upper surface of the needle 14 and the needle plate 3 that can be driven to reciprocate up and down. An empty ring cutting device (not shown because it is well known) is disposed on the right rear side in the sewing progress direction X with respect to the needle plate 3, and an empty ring is provided on the right side of the needle plate 3. The suction pipe 5 is disposed so as to be freely swingable around the fulcrum rotating shaft 15, and further, in front of the empty ring suction pipe 5, an empty ring pushing guide attached to the sewing machine bed portion 12 via a mount 16. A device 17 is arranged.
[0014]
As shown in FIG. 3, the empty ring suction pipe 5 is in a first position where the empty ring A is received and sucked and held after being cut by the empty ring cutting device and in the sucked and held state of the empty ring A. To start the sewing operation of the second position where the needle plate 3 is moved back to the position near the cloth edge cutting knife 20 near the base end of the stitch forming claw portion 2 of the stitch plate 3 and waits for the sewing operation. Along with this, the fulcrum rotating shaft extends from the second position to the third position where the idle ring A is further swung back in the direction Y opposite to the sewing progress direction X and the empty ring A is drawn into the stitches at the sewing start end We of the subsequent sewing fabric W. 15 is configured to be able to swing around the drive.
[0015]
Further, as shown in FIGS. 4 and 5, the idler presser claw 6 fixed to the side end portion of the presser foot 4 so as to be adjustable in the left-right position is formed on the needle drop portion 1 and the claw portion 2 of the needle plate 3. On the other hand, the needle drop portion 6a and the claw portion 6b having a reduced similarity shape are slid down and transferred to the back side of the presser foot 4 from the empty ring A that is pulled to the front side of the needle drop portions 1 and 6a by the empty ring suction tube 5. The empty ring guide portion 6c having an inclined surface and the empty ring A that is slid down to the back side by the empty ring guide portion 6c are fitted and held, and the subsequent sewing fabric W of the empty ring A is drawn into the seam S. It has a groove 6d for guiding. Of the pair of empty ring guide surface portions 6e and 6f facing each other on both sides of the retracting guide groove 6d on the back surface of the empty ring presser claw 6, the empty ring guide surface portion 6e far from the side edge of the sewing fabric W is sewn. The needle drop portions 1, 6a closest to the side edge of the fabric W are displaced to the left side opposite to the side edge of the sewing fabric W.
[0016]
Further, the idle ring push guide device 17 includes an air cylinder 18 fixedly held on the mounting base 16 and an idle ring push guide 19 fixedly connected to the tip of the piston rod 18a of the air cylinder 18. A substantially V-shaped empty ring hooking portion 19 a is formed at the tip of the guide tool 19. As shown in the solid line in FIGS. 1 and 6, the empty ring pushing guide device 17 normally stands back and waits at an obliquely upper right position of the needle plate 3 and the presser foot 4. In conjunction with the swing movement of the ring suction tube 5 from the second position to the third position, as shown by the arrow in FIG. 1, the phantom line in FIG. 2, and the solid line in FIG. Displacement guide surface portion of the empty ring presser claw 6 by moving advancing and moving in the diagonally lower left direction Z intersecting a part of the empty ring A with the empty ring hooking portion 19a at the front end pulled in front of the needle drop portions 1 and 6a 6e is pushed and displaced.
[0017]
Next, a description will be given of an idle stitching method using the idle stitching device of the edge stitching machine configured as described above with reference to the operation state change diagrams of FIGS. 6 and 7 and the timing chart of FIG. .
[0018]
When the sewing end of the preceding sewing fabric passes through the fabric sensor and the sensor becomes non-detected (bright state), the idle ring cutting device starts sucking and sucks the remaining idle ring, and a known thread loosening device Is turned on to loosen the thread, while the edge stitch sewing machine M continues to rotate until a preset number of stitches is reached, during which a fixed length of annulus is formed. When the set number of stitches is reached, the rotation of the sewing machine M stops, the empty ring cutting device sucks and cuts the empty ring, and the cut empty ring is blown out in the direction opposite to the suction direction. The empty ring suction pipe 5 waiting at the second position moves to the first position, and after sucking and holding the empty ring A blown from the empty ring cutting device, the suction ring 5 is returned to the second position again. The presser foot 4 rises away from the upper surface of the throat plate 3 at the same time as it swings and waits. In this state, the sewing of the preceding sewing fabric is completed by turning off the pedal.
[0019]
Next, in a state in which the empty ring A sucked and held in the empty ring suction tube 5 is drawn in front of the needle drop portion 1 of the needle plate 3 by the swing movement of the suction tube 5 to the second position, The next succeeding sewing fabric W is set on the needle plate 3 so that the sewing start edge We is positioned almost on the same line as the fabric edge cutting knife 20 in the sewing progress direction X, and the fabric sensor detects it. In the dark state, the presser foot 4 is lowered so as to come into contact with the upper surface of the throat plate 3, and the thread loosening device is turned off to release the thread loosening so that sewing can be started.
[0020]
When the pedal is turned on in this state, the sewing machine M starts to rotate and the sewing fabric W is fed in the sewing progress direction X until the sewing start edge e reaches the needle drop portion 1 of the needle plate 3. During this time, the empty ring A wound around the stitch forming claw portion 2 of the needle plate 3 remains wound around the claw portion 3.
[0021]
Further, the sewing fabric W is sent in the sewing progressing direction X, and the sewing start edge e reaches the position near the tip of the stitch forming claw portion 2 of the needle plate 3 and the sewing edge from the sewing start edge e to the fabric edge. When the dimension of the upper knife 20 for cutting reaches a position where the predetermined length is reached, the rotation of the sewing machine M is once stopped for a predetermined time, and at the same time, the empty suction pipe 5 is moved from the second position to the position shown in FIG. As shown in FIG. 6, the ring A is pulled toward the front side of the needle drop portions 1 and 6a. The air ring guide portion 6c slides down to the rear surface side and is fitted and held in the rear guide groove 6d.
[0022]
Immediately after that, the empty ring push guide device 17 is actuated and the empty ring push tool 19 moves obliquely in the lower left direction as clearly shown in FIG. 7, and accordingly, via the hooking portion 19a at the tip of the push guide 19 Thus, a part of the empty ring A is pushed and displaced toward the one displacement guide surface part 6e forming the guide groove 6d on the back surface of the empty ring presser claw 6, and then the empty ring A is moved by the empty ring suction pipe 5. Suction hold is released.
[0023]
Then, once the sewing machine M that has been stopped returns to a predetermined rotation, the subsequent sewing fabric W is sent in the sewing progress direction X and sewing is started. The fabric edge cutting knife 20 is moved by the initial hand movement at the start of sewing. The empty ring A pushed into the cutting portion of the sewing fabric is cut by the knife 20 together with the side end portion of the sewing fabric W, and the cut empty ring portion is drawn into the seam S at the sewing start end of the sewing fabric W and is sewn. However, at this time, a part of the empty ring A is pushed and displaced toward the one displacement guide surface portion 6e forming the guide groove 6d on the back surface of the empty ring presser claw 6, so as shown in FIG. Furthermore, a part A1 of the empty ring A drawn into the seam S of the sewing fabric W is sewn with the needle thread ny that forms the seam S. Therefore, even when a strong force is applied to the sewing fabric W, such as when washing the sewing product, the empty ring A sewn in the seam S is reliably prevented from coming out of the seam S, and is always good. The texture is maintained and the original fraying prevention function of back tack sewing is ensured.
[0024]
Further, when the number of stitches at the time of the ground sewing after the above-mentioned empty ring sewing reaches a predetermined value, the above-mentioned empty ring pushing guide device 17 returns to the diagonally upper right position shown by the solid line in FIG. And the empty ring suction pipe 5 returns to the second position and is prepared for the next empty ring stitching.
[0025]
In the above embodiment, as a means for pushing and displacing a part of the empty ring A toward the one displacement guide surface 6e side of the guide groove 6d on the back surface of the presser claw 6, the means shown in FIG. 1, FIG. 6, and FIG. Although the example using the empty ring pushing guide device 17 having such a configuration has been described, instead of this, as shown in FIG. 10, the empty ring suction pipe 5 is swung from the second position to the third position. The position of the fulcrum rotating shaft 15 is deviated using an eccentric cam or the like so that the tip movement locus is on the left side compared with that shown in FIG. You may comprise so that it may serve as the means to push and displace to the guide surface part 6e side. In this way, when the empty ring suction tube 5 is configured to also serve as the displacement moving means of the empty ring A, the empty ring pushing guide device 17 requiring a large installation space on the right side of the needle plate 3 is not required, and Cost reduction and size reduction can be achieved.
[0026]
In addition to the above embodiments, the needle plate 3 and the presser foot 4 may be used as means for pushing and displacing a part of the empty ring A toward the one displacement guide surface portion 6e of the guide groove 6d on the back surface of the presser claw 6. An air ring spray nozzle is provided at an obliquely upper right position of the nozzle so that air blown from the nozzle is blown to the air ring A, or an air ring suction nozzle or advancing and retracting drive at an obliquely upper left position of the throat plate 3 and presser foot 4. A movable empty ring hook is installed, and a part of the empty ring A is moved to the displacement guide surface part 6e side by the empty ring suction action by the empty ring suction nozzle or the empty ring hook action by the empty ring hook. You may comprise so that it may displace to.
[0027]
Furthermore, although the two-needle edge stitching machine M is illustrated in the above embodiment, the same effects as described above can be achieved even when applied to a one-needle or three-needle edge stitching machine. Is.
[0028]
【The invention's effect】
As described above, according to the present invention, at the end of the sewing of the preceding sewing fabric, it is pulled into the stitches at the sewing start end of the subsequent sewing fabric by pulling to the near side of the needle drop portion by the swinging operation of the free ring suction tube. Since the empty ring is sewn so that at least a part of the empty ring can be sewn with the needle thread for forming the stitches, even if the fabric is subjected to intense force, such as when washing the sewing product, Therefore, it is possible to reliably prevent the empty ring from accidentally coming out of the seam. While maintaining a good texture at all times without deteriorating the function, the fraying prevention function inherent in back tack sewing can be secured over a long period of time.
[0029]
Moreover, in terms of the device, the above-mentioned good texture can be maintained only by making a very simple configuration improvement of displacing one guide surface portion of the pull-in guide groove on the back surface of the empty ring presser claw, and originally It is possible to reliably and easily realize the operation of stitching the empty ring in a state where the empty ring is prevented from being loosened.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic perspective view of an edge stitch machine provided with an empty ring stitching device used for carrying out an empty ring stitching method according to the present invention.
FIG. 2 is an enlarged plan view of the periphery of a needle plate, which is a main part of the above-described empty ring stitching device.
FIG. 3 is an enlarged partially cutaway plan view of the main part showing the configuration and operation of the empty ring suction pipe in the empty ring stitching device.
FIG. 4 is an enlarged plan view of a main part showing the configuration of an empty ring presser claw in the empty ring stitching device.
5 is a cross-sectional view taken along line BB in FIG.
FIG. 6 is an enlarged perspective view of a main part showing a non-operating state of an empty ring pushing guide device in the empty ring stitching device.
FIG. 7 is an enlarged perspective view of the main part showing the operating state of the empty ring push-in guide device in the empty ring stitching device.
FIG. 8 is a timing chart for explaining operation timings in the above-described empty ring stitching device.
FIG. 9 is an enlarged perspective view showing a part of the sewn product after empty ring sewing.
FIG. 10 is an enlarged plan view of the vicinity of a needle plate, which is a main part of a modified example of the empty ring stitching device used for carrying out the empty ring stitching method according to the present invention.
FIG. 11 is an enlarged plan view of the periphery of a needle plate, which is a main part of a conventional empty ring stitching device.
FIG. 12 is an enlarged plan view of a main part showing a configuration of an empty ring presser claw in a conventional empty ring stitching device.
13 is a cross-sectional view taken along the line CC of FIG.
FIG. 14 is an enlarged perspective view showing a part of the sewn product after the blank ring stitching by the conventional blank ring stitching device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Needle drop part 3 Needle plate 4 Presser foot 5 Empty ring suction pipe 6 Empty ring holding claw 6c Empty ring guide part 6d Empty ring retracting guide groove 6e, 6f Empty ring guide surface part 17 Empty ring pushing guide device A Empty ring W Sewing Fabric Wet Start end S Seam ny Needle thread

Claims

先行縫製生地の縫い終り時に吸い込まれて該先行縫製生地から切断された空環を吸引保持する空環吸引管の縫製進行方向とは逆方向への揺動動作により、切断後の空環を針落ち部の手前側に引張って後続縫製生地の縫い始め端の縫い目中に引き込んで縁かがり縫いミシンにより縫い込む空環縫い込み方法であって、
上記空環吸引管により針落ち部の手前側に引き込まれる空環の少なくとも一部を針落ち部に対して後続縫製生地の側端縁とは反対側に変位移動させて、その変位移動した空環の少なくとも一部を後続縫製生地の縫い目を形成する針糸で縫い付けることを特徴とする空環縫い込み方法。The empty ring after cutting is needled by the swinging movement of the empty ring suction pipe that sucks and holds the empty ring that is sucked and cut from the preceding sewing material at the end of sewing of the preceding sewing material in the direction opposite to the sewing progress direction. A free ring stitching method in which a pulling is performed on the front side of the falling part, pulled into the stitches at the sewing start end of the subsequent sewing fabric, and sewn by an edge stitch sewing machine,
At least a part of the empty ring drawn to the front side of the needle drop portion by the empty ring suction tube is displaced to the side opposite to the side edge of the subsequent sewing fabric with respect to the needle drop portion, and the displaced empty space is moved. An empty ring stitching method characterized in that at least a part of a ring is sewn with a needle thread that forms a seam of a subsequent sewing fabric.

先行縫製生地の縫い終り時に吸い込まれて該先行縫製生地から切断された空環を後続縫製生地の縫い始め端の縫い目中に引き込んで縁かがり縫いミシンにより縫い込むように構成されている空環縫い込み装置であって、
縫製生地を針板に押圧する押え金と、この押え金の上部に設置されて先行縫製生地から切断された空環を吸引保持するとともに後続縫製生地の縫製開始に伴って縫製進行方向とは逆方向へ揺動動作して吸引した空環を針落ち部の手前側に引張って後続縫製生地の縫い始め端の縫い目中に引き込む空環吸引管と、上記押え金の側端部に固定されて空環吸引管の揺動動作により針落ち部の手前側に引張られる空環を押え金の裏面側に移行させる空環ガイド部及びこの空環ガイド部により裏面側に移行された空環を嵌合保持して該空環の縫い目中への引き込みを案内する溝が形成された空環押え爪とを具備し、
この空環押え爪裏面の引き込み用案内溝の両側で対向位置する一対の空環案内面部のうち縫製生地の側端縁からは遠い側の空環案内面部は、縫製生地の側端縁に最も近い針落ち部に対して縫製生地の側端縁とは反対側に変位されており、
上記空環吸引管により針落ち部の手前側に引き込まれる空環の少なくとも一部を上記変位空環案内面部側に変位移動させる手段を設けていることを特徴とする空環縫い込み装置。Annular stitching configured to draw in an empty ring which is sucked at the end of sewing of the preceding sewing fabric and cut from the preceding sewing fabric into a stitch at the sewing start end of the subsequent sewing fabric and is sewn by an edge stitch sewing machine. Device
The presser foot that presses the sewing fabric against the needle plate and the empty ring that is installed on the upper part of the presser foot and is cut from the preceding sewing fabric is sucked and held, and the reverse of the sewing progress direction with the start of sewing of the subsequent sewing fabric. Is fixed to the side end of the presser foot, and the idler suction pipe that pulls the idled ring that swings in the direction toward the front side of the needle drop part and pulls it into the seam at the sewing start end of the subsequent sewing fabric. Fits an empty ring guide part that moves the empty ring pulled to the front side of the needle drop part by the swinging movement of the empty ring suction pipe to the back side of the presser foot and an empty ring that has been transferred to the back side by this empty ring guide part An empty ring presser claw formed with a groove for holding and guiding the drawing of the empty ring into the seam;
Of the pair of empty ring guide surface portions facing each other on both sides of the pull-in guide groove on the back surface of the empty ring presser claw, the empty ring guide surface portion farthest from the side edge of the sewing fabric is the closest to the side edge of the sewing fabric. It is displaced to the side opposite to the side edge of the sewing fabric with respect to the near needle drop part,
An empty-ring stitching device comprising means for displacing and moving at least a part of an empty ring drawn toward the front side of the needle drop portion by the empty-ring suction tube toward the displacement empty-ring guide surface portion.

上記空環の少なくとも一部を変位空環案内面側に変位移動させる手段が、空環吸引管の揺動動作により針落ち部の手前側に引張られる空環の引張り経路に対して交差する方向に進出後退駆動移動自在に設けられた空環押込案内装置である請求項２に記載の空環縫い込み装置。A direction in which the means for displacing and moving at least a part of the empty ring toward the displacement empty ring guide surface crosses the pulling path of the empty ring that is pulled to the near side of the needle drop portion by the swinging operation of the empty ring suction pipe. 3. An empty ring stitching device according to claim 2, wherein the empty ring pushing guide device is provided so as to be movable forward and backward.

上記空環の少なくとも一部を変位空環案内面側に変位移動させる手段が、空環を吸引保持して該空環を針落ち部の手前側に引張る空環吸引管で兼用すべく構成されている請求項２に記載の空環縫い込み装置。The means for displacing and moving at least a part of the empty ring toward the displacement empty ring guide surface side is configured to serve as an empty ring suction tube that sucks and holds the empty ring and pulls the empty ring toward the front side of the needle drop portion. The ring stitching device according to claim 2.