JP2004027463A

JP2004027463A - Method for piercing spun yarn, devicefor the same and pierced up section

Info

Publication number: JP2004027463A
Application number: JP2003101623A
Authority: JP
Inventors: Susumu Baba; 馬場　進; Hiroshi Mima; 美馬　博志; Taisuke Hatakeyama; 畠山　泰典; Takeshi Shioda; 塩田　健
Original assignee: Murata Machinery Ltd
Current assignee: Murata Machinery Ltd
Priority date: 2002-05-09
Filing date: 2003-04-04
Publication date: 2004-01-29
Anticipated expiration: 2023-04-04
Also published as: CN100507107C; JP3985716B2; CN1456721A

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for piercing spun yarns capable of simplifying the piercing work and also entangling them complicatedly each other. <P>SOLUTION: This method for piercing the spun yarns is provided by overlapping a plurality of yarns 20, 21 in the same direction, inserting the tip end part into a piercing hole 7, restraining the root side of the yarn end, making the tip end side as a free state, effecting compressed fluid on the tip end part and thereby forming a firm and small-sized pierced section 23. There is no need of untwisting the yarn end parts in advance, and also it is possible to entangling the yarn end parts complicatedly each other by untwisting the yarn end parts positioned in downstream side from the restrained position, especially positioned more downstream side than a nozzle hole 12 by the compressed air flow. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、紡績糸の糸継ぎの技術に関する。
詳細には、二本の糸の糸端において、該糸端を同方向に向けて重ね合わせ、該重なった部分に空気などの圧縮流体を作用させることにより糸継ぎを行う技術に関する。
【０００２】
【従来の技術】
従来から、糸継装置としては、フィッシャーマンノットやウィーバースノットといったノット（結び目）を形成して糸継ぎを行うノッターと呼ばれる装置や、予め二本の糸端部を解撚し、該糸端部が糸継孔内で互いに逆方向となるように重ね合わせ、該重ね合わせ部分に圧縮流体（圧縮空気など）を旋回気流として作用させることによって二本の糸端部を旋回・振動させて絡み合わせ、糸継ぎを行うスプライサーと呼ばれる装置が知られている。スプライサーに関しては特許文献１に記載の如くである。
【０００３】
【特許文献１】
特公昭６０−３９７６７号公報
【０００４】
【発明が解決しようとする課題】
ノットを形成することによる糸継方法は、該ノット部が他の部位に比べて糸の半径方向に全周にわたって突出しているため、後工程の編織工程の編針を通過する際に編針に引っかかり、断線の原因となっていた。
また、スプライサーによる継ぎ目は前記ノットと比較すると突出量が小さいが、それでも編針に引っかかることによる断線が起こる場合がある。このような編針に引っかかることによる断線は、特にニット編機など、途中で該機械を停止して、その場で糸を継ぎ直すことが容易にできない場合は、最初から作業をやり直さなければならず作業性に問題があった。
また、ノットやスプライサーによる継ぎ目は、断面積や糸の撚り状態が他の部位と異なり、手触りや染色の具合が他の部位と異なるが、スプライサーによる継ぎ目は他のものに比べて長く、編物や織物にしたときの染色ムラが目立ったり、継ぎ目部分の特性の変化が大きいという問題があった。
【０００５】
【課題を解決するための手段】
本発明の解決しようとする課題は以上の如くであり、次にこの課題を解決するための手段を説明する。
【０００６】
即ち、請求項１においては、複数の糸の先端部を同じ方向に重ね合わせ、該先端部を糸継孔内に挿入し、該先端部に圧縮流体を作用させることにより、複数の糸を連結させるものである。
【０００７】
請求項２においては、複数の糸の先端部を同じ方向に重ね合わせ、該先端部を糸継孔内に挿入し、該先端部に圧縮流体を作用させる際に、糸端の根元側を拘束し、糸端先端側をフリー状態として圧縮流体を作用させるものである。
【０００８】
請求項３においては、重ね合わせた糸端に対してほぼ直角方向に圧縮流体を作用させるものである。
【０００９】
請求項４においては、糸継孔が形成される本体部が、糸継孔の両端面を通る断面で二分割されているとともに、該糸継孔内に圧縮流体を噴出するための孔が一つ以上設けられているものである。
【００１０】
請求項５においては、糸継孔が形成される本体部が、糸継孔の両端面を通る断面で二分割されているとともに、該ニ分割された各部材を合わせて糸継ぎ孔を構成したときに、該二部材間に所定の大きさのエア逃がし用の隙間が形成されるものである。
【００１１】
請求項６においては、糸継孔が形成される本体部に、該糸継孔に糸継ぎされる二本の糸端部を引き揃えて、その端部が同じ方向を向くように横架したときに、二本の糸端の中途部を拘束する糸止め溝を設けたものである。
【００１２】
請求項７においては、糸継孔が形成される本体部に、該糸継孔に糸継ぎされる二本の糸端部を引き揃えて、その端部が同じ方向を向くように横架したときに、ニ分割された本体部が合わさった状態で二本の糸端の中途部をクランプする、クランプ部材を設けたものである。
【００１３】
請求項８においては、糸継孔が形成される本体部に、該糸継孔に糸継ぎされる二本の糸端部を引き揃えて、その端部が同じ方向を向くように横架したときに、該糸端部の先端側を切断するカッター部材を設けたものである。
【００１４】
請求項９においては、前記クランプ部材を糸継孔の一端に配置し、カッター部材を糸継孔の他端に配置したものである。
【００１５】
請求項１０においては、糸継孔の両側面に開口する二つの開口部のうち、二本の糸の根元側の開口部の断面積が他の開口部の断面積より小さくしてあるものである。
【００１６】
請求項１１においては、前記二つの開口部のうち、大きく構成された他の開口部は、糸継孔の側面に形成される排気壁と、排気壁と連通する排気孔とで構成されるものである。
【００１７】
請求項１２においては、複数の糸の繊維がランダムに絡み合った連結部と、該連結部より突出した一本のテールからなるものである。
【００１８】
【発明の実施の形態】
次に、発明の実施の形態を説明する。
【００１９】
まず、図１から図３を用いて、糸継装置の本実施の一例である糸継装置１について説明する。なお、以下の説明では、「糸」は綿、毛、麻などの天然繊維、化合繊のフィラメント糸をショートカットしたいわゆるステープルファイバ、およびこれらの混合繊維を集束した、短繊維の紡績糸を総称したものとする。また、「ファイバ」はこの紡績糸を構成する短繊維を示すものである。
【００２０】
糸継装置１は主に、本体部を構成する下部糸継部材２や上部糸継部材３、ホルダ４、固定ねじ５などからなる。下部糸継部材２には該下部糸継部材２の左右側面を貫通する孔８が穿設され、該孔８にホルダ４を下部糸継部材２に回動可能に枢着するためのホルダ軸６が遊嵌される。該ホルダ４には上部糸継部材３が固定ねじ５により螺設される。上部糸継部材３の下面には糸継溝１３および当接面１４が設けられる。
なお、本実施例ではホルダ４は下部糸継部材２に対して回動する構成であるがこれに限定するものではなく、上部糸継部材３が下部糸継部材２から離間し、後述する糸継孔７が大きく開口する構成であれば良い。また、本実施例では上部糸継部材３が固定ねじ５等の締結部材によりホルダ４に固定される構成としたが、例えば溶接や接着剤による接着など他の方法で固定してもよい。さらに、上部糸継部材３とホルダ４とを一体的に成形してもよい。
【００２１】
図２に示すように、ホルダ４を下方に回動させた状態（図２において二点鎖線で図示）では、下部糸継部材２側の当接面１０と上部糸継部材３側の当接面１４とが当接・密着する。そして下部糸継部材２側の糸継溝９と上部糸継部材３側の糸継溝１３とによって、側面断面視略円形の糸継孔７（図２において斜線で示す部位）が形成される。すなわち糸継孔７が二分割された部材（下部糸継部材２および上部糸継部材３）の合わせ面に沿って形成されている。言い換えれば、糸継孔７（本実施例では円筒形状）の両端面を通過する位置に二分割された部材の合わせ面が来るように構成されているのである。
このとき、本実施例においては下部糸継部材２側の斜面１５と上部糸継部材３側の斜面１６とは当接せず、所定の大きさの隙間１７が形成される。これは糸継孔７内の圧縮流体の流れ方を適宜コントロールするためのものであって、糸の種類、太さなどにより、該隙間１７の幅を変えたり、あるいは該隙間１７を閉塞するなどしても良い。
一方、ホルダ４を上方に回動させた状態（図２において実線で図示）では、糸継作業の際に二本の糸端部がセットされる糸継孔７は大きく開口されており、前記二本の糸端部を容易にセット可能に構成される。また、糸継孔７の一方の端部にはプレート１８が設けられる。該プレート１８には、糸止め溝１９が設けられている。
【００２２】
また、流体導入孔１１は下部糸継部材２の下面から穿設され、図示せぬエアコンプレッサーからの圧空配管が接続される。そして、流体導入孔１１の上端と糸継孔７とを連通するノズル孔１２が穿設される。
また、下部糸継部材２の前部には、ボルト締結用のボルト孔２２が上面から下面に貫通して穿設される。
【００２３】
なお、本実施例では糸継孔７は断面視略円形であるが、Ｖ字型、Ｕ字型、矩形など種々の形状とすることが可能であって、限定されない。すなわち、糸継孔の断面形状、サイズおよび長さは糸継ぎされる糸の性状（種類、ファイバ太さ、撚り方）、作用させる圧縮流体の圧力、後述するノズル孔の性状（個数、形状、配置、大きさ）などにより適宜選択するものである。
また、本実施の一例では長手方向に伸びたオーバル型のノズル孔１２を糸継孔７の長手方向に関して略中央に一個配置し、糸継ぎ孔７の中心に向けて圧縮流体を噴出させる構成であるが、形状を略円形としたり、矩形としたり、複数個配置したり、糸継孔７の長手方向に関して中心からずれた位置に配置したり、ノズル孔のサイズを変えたり、中心からずれた方向に向けて圧縮流体を噴出させるように構成しても良い。すなわち、糸の性状（種類、ファイバ太さ、撚り方）、作用させる圧縮流体の圧力、糸継孔７の断面形状あるいは長さによって適宜選択すれば良く、限定されない。
【００２４】
このように、下部糸継部材２及び上部糸継部材３に形成される糸継孔７が、ちょうどその両端面を通る断面で二分割されていることにより、従来の方法（糸継孔が設けられている部材が二分割されておらず、両端面を通る挿入溝を形成することにより糸を糸継孔に挿入する方法）に比べ、糸の挿入が容易になるだけでなく、糸の挿入を考慮した大きな挿入溝を設ける必要がないので前記隙間１７を小さくすることができ、糸継孔の密閉性が高く、糸に作用させる圧縮流体（空気などの気体）を効率よく糸に作用させることが可能である。このことは後述する継ぎ目の強度が向上する（断線しにくい）とともに、糸に作用させる圧縮流体の圧力が従来法と比較して小さい場合でも継ぎ目の強度が得られるという利点がある。
【００２５】
次に、図４から図６を用いて、本実施の糸継方法の一例を示す。
図４に示すように、糸継ぎを行う二本の糸２０・２１の糸端部を引き揃えて、その端部が同じ方向を向くように重ね合わせ、糸継溝９上に横架させる。このとき、二本の糸２０・２１の先端は、プレート１８が設けられていない方に向け、二本の糸２０・２１の中途部を糸止め溝１９に差し込む形でセットする。このようにすることにより、二本の糸２０・２１は中途部において、糸止め溝１９により緩やかに拘束された形となる。なお、二本の糸２０・２１はプレート１８が設けられた糸止め溝１９よりも根元側で、図示せぬクランプ手段によりクランプされる。
続いて、図５に示すように、ホルダ４を下方に回動させると、下部糸継部材２と上部糸継部材３とが当接面１０・１４で当接し、側面断面視略円形の糸継孔７が形成されるとともに、二本の糸２０・２１が糸継孔７の内部に貫装された状態になる。この状態で下部糸継部材２と上部糸継部材３とが離間しないようにホルダ４を固定し、流体導入孔１１に接続された図示せぬエアコンプレッサーからの圧空配管よりノズル孔１２を経て、糸継孔７内に圧縮流体（本実施例では圧縮空気）が噴出される。
【００２６】
このとき、糸継孔７の開口部は糸継装置１の両側面に位置するが、二つの開口部のうち、二本の糸２０・２１の根元側（糸２０・２１の端部が配置されている反対側）は、プレート１８により開口部の断面積が小さくなっている。
そのため、糸継孔７内に噴出された圧縮空気の多くは、糸２０・２１の端部が配置されている側に流れ、糸継孔７外部に排出される。この圧縮空気の流れにより、糸２０・２１の先端部において、ノズル孔１２より下流側に位置する部分は解撚されるとともに、互いに複雑に絡み合う。
結果として、図６に示すようにノズル孔１２に対応する部位において、小さな連結部２３（糸２０・２１の解撚されたファイバ同士が強固に絡み合った部分）が形成されるとともに、該連結部２３よりさらに先端側は、解撚されたファイバが互いに強固に絡まず、束状になったテール２４が形成される。以後、連結部２３、境界部２３ａおよびテール２４を合わせて継ぎ目３０と呼ぶ（図１３図示）。
なお、本実施例では糸２０・２１の端部は予め解撚せずに行ったが、予め解撚しておいても同様に糸継ぎを行うことが可能であることから、糸先端部の撚り状態については限定されない。ただし、予め糸端部を引っ張るなどしてある程度解撚しておくなどの処置をした後、本実施の糸継方法を用いると、圧縮流体の圧力が小さくとも強固な連結部を形成することが可能となる利点がある。
【００２７】
このように、二本の糸の先端部を同じ方向に重ね合わせ、該先端部を糸継孔内に挿入し、該先端部に圧縮流体を作用させることにより解撚・連結させるので、強固かつサイズの小さい連結部が形成可能である。また糸端部を予め解撚しておく必要がなく、作業を簡略化することが可能である。
【００２８】
なお、本実施例では二分割された部材からなる糸継装置１を用いたが、作業性はやや劣るものの、例えば一体成形された部材に同形状の糸継孔およびノズル孔を設ければ同様の効果を奏することから、使用される糸継装置は本実施例に限定されない。
【００２９】
次に、糸継装置の本実施形態における第二例について説明する。
図７、図８に示す第二例の糸継装置５１は、下部糸継部材２、上部糸継部材３、及びホルダ４等にて構成される第一例の糸継装置１に加えて、クランプ部材６８、カッター部材６９及び開閉アーム７０を設けたものであり、その他の部分は前記糸継装置１と同様の構成となっている。
【００３０】
クランプ部材６８は、前記糸継装置１のプレート１８の代わりに糸継孔７の一方の端部に配置されるクランプ板６８ａと、クランプ板６８ａが配置される側のホルダ側面４ａとで構成されている。
クランプ板６８ａには、糸端部を引き揃えて糸継溝９上に横架される二本の糸２０・２１を載置するガイド溝６８ｂが形成されている。ホルダ側面４ａの下部には、ホルダ４を上方回動して糸継溝９やガイド溝６８ｂに糸２０・２１をセットするとき等に、該糸２０・２１の通り道を確保するための切り欠き部４ｂが形成されている。
【００３１】
カッター部材６９は、糸継孔７の他方の端部に配置される下刃６９ａと上刃６９ｂとで構成されている。下刃６９ａは下部糸継部材２側に取り付けられ、上刃６９ｂは上部糸継部材３側に取り付けられており、上部糸継部材３の下部糸継部材２に対する上下回動動作に伴って、該下刃６９ａと上刃６９ｂとが開閉する。また、糸継装置５１には、ホルダ４の上面に締結部材５５にて開閉アーム７０が取り付けられており、該開閉アーム７０を把持操作することで、上部糸継部材３の下部糸継部材２に対する上下回動動作を容易に行うことが可能となっている。
【００３２】
以上の如く構成される糸継装置５１にて糸継ぎを行う場合の、クランプ部材６８及びカッター部材６９の作用について説明する。
図９、図１０に示すように、糸継ぎを行う場合には、まず下部糸継部材２を上方回動して、二本の糸２０・２１を引き揃えた状態で糸継溝９上に横架する。
このように、下部糸継部材２が上方回動された状態では、ホルダ側面４ａとクランプ板６８ａのガイド溝６８ｂとの間には、切り欠き部４ｂにより糸２０・２１の通り道が確保されており、糸２０・２１は糸継溝９及びガイド溝６８ｂにより載置位置をガイドされながらも、自由に動くことが可能である。
また、カッター部材６９は開いており、下刃６９ａと上刃６９ｂとの間を糸２０・２１が通過している。
【００３３】
図１１、図１２に示すように、この状態から上部糸継部材３を下方回動すると、下部糸継部材２側のクランプ板６８ａと上部糸継部材３側のホルダ側面４ａとが、側面視にてオーバーラップして糸２０・２１の通り道がなくなる。
これにより、糸２０・２１の糸端の途中部が、クランプ部材６８を構成するクランプ板６８ａとホルダ側面４ａとにより、糸継孔７の一方の端部にて挟持される。
すなわち、ニ分割された本体部である下部糸継部材２と上部糸継部材３とが合わさった状態で、該本体部に形成された糸継孔７に糸継ぎされる二本の糸２０・２１の糸端部を引き揃えて、その端部が同じ方向を向くように横架したときに、クランプ部材６８により二本の糸端の中途部がクランプされる。
糸継溝９に横架される糸２０・２１は、クランプ部材６８によりクランプされることで、その載置位置が固定されることとなる。
【００３４】
一方、糸継孔７の他方の端部では、上部糸継部材３が下方回動されると、下部糸継部材２側の下刃６９ａと上部糸継部材３側の上刃６９ｂとが側面視にてオーバーラップするため、該下刃６９ａと上刃６９ｂとにより、糸２０・２１の糸端の先端側が切断される。
糸端の先端側が切断されることで、糸２０・２１における、クランプ部材６８によりクランプされた部分から切断された部分までの寸法を一定にすることができる。本例の場合、クランプ部材６８は糸継孔７の一端に配置され、カッター部材６９は糸継孔７の他端に配置されているので、その寸法は、ほぼ糸継孔７の長さ分の寸法となる。
【００３５】
このように、クランプ部材６８により糸２０・２１の位置が固定されること、及びカッター部材６９により糸２０・２１が一定長さにて切断されることで、糸継ぎ時の糸２０・２１の解撚度合いや絡み度合い、継ぎ目が形成される位置から糸端までの寸法等のばらつきが減少し、糸継ぎした糸２０・２１及び結び目の品質を安定させることができる。
特に、クランプ部材６８を糸継孔７の一端に配置し、カッター部材６９を糸継孔７の他端に配置することで、糸２０・２１が固定されている位置から圧縮空気が噴出するノズル孔１２までの寸法、及び該ノズル孔１２から糸端までの寸法を一定にすることができ、結び目の品質を一定とすることができる。
なお、糸継装置５１のようにクランプ部材６８を設けた場合は、前述の糸継装置１の場合ように、糸止め溝１９の根元側に、糸２０・２１をクランプするためのクランプ手段を設ける必要はない。
【００３６】
また、糸継装置５１では、下部糸継部材２における、糸継孔７のカッター部材６９配置側の端部には、糸継孔７と直交する方向に排気溝７４が形成されている。また、ホルダ４におけるカッター部材６９配置側の側面には排気孔７５が形成されている。ホルダ４を下方回動した状態で、排気溝７４と糸継孔７とが連通し、排気溝７４と排気孔７５とが連通する。
【００３７】
ホルダ４を下方回動した状態では、糸継孔７の両側部は、それぞれクランプ部材６８とカッター部材６９とで閉じられるが、糸継孔７のカッター部材６９側は、排気溝７４と排気孔７５により外部に対して大きく開口している。これに対し、糸継孔７のクランプ部材６８側は、該クランプ部材６８により閉じられているため、開口部は下部糸継部材２とクランプ部材６８との間の僅かな隙間のみとなり、カッター部材６９側に比べて小さな開口となっている。
即ち、糸継孔７の両側面の開口部の断面積は、クランプ部材６８が配置される糸２０・２１の根元側の方が、カッター部材６９が配置される糸２０・２１の先端側の方よりも小さく構成されている。
【００３８】
そのため、糸継孔７内に噴出された圧縮空気が、乱れることなく安定して、糸２０・２１の先端部が位置するカッター部材６９側へ向かって一方向に流れ、糸継孔７の外部に排出されることとなる。
この圧縮空気の乱れることのない一方向への流れにより、糸２０・２１の先端部において、ノズル孔１２より下流側に位置する部分が解撚されるとともに、互いに複雑に絡み合い、安定した継ぎ目３０を形成することが可能となっている。
【００３９】
次に、本実施の糸継方法により得られる継ぎ目について、図１３および図１４を用いて説明する。
【００４０】
従来のスプライサーによる糸継ぎの場合、図１４に示すように、糸２５・２６の糸端部を予め解撚しておき、糸端部が互いに逆向きになるように重ね合わせ、または交差させ、糸継孔内で異なる二箇所から圧縮流体（空気）を噴出させる。このとき、解撚された糸端部が、糸継孔内で糸２５・２６の撚り方向と同方向に旋回するように圧縮空気の噴出孔を形成することにより、従来のスプライサーにおける連結部２７は糸２５・２６と同方向の撚りを持つ。以後、連結部２７およびテール２５ａ・２６ａを合わせて継ぎ目３１と呼ぶ。
【００４１】
一方、図１３に示すように、本実施の糸継方法により得られた継ぎ目３０は、図１４に示すような従来のスプライサーにより得られる継ぎ目３１と比較して、幾つかの利点を有する。
【００４２】
第一に、本実施の継ぎ目３０は、予め糸２０・２１の先端部を解撚しておかなくとも、糸継ぎを行うことが可能である。これは、従来のスプライサーによる継ぎ目３１は糸と同方向に撚りを形成する必要があったため、予め解撚しておき、次に解撚された糸端部を撚り方向に旋回させることが必須条件であったことによる。一方、本実施例では、撚り方向を考慮する必要がなく、糸の側面より圧縮空気を噴出してやれば圧縮空気が当たった部分は解撚し、かつ二本の糸からのファイバがランダムに絡み合って継ぎ目３０が形成される。
さらに、圧縮空気が当たる部分より根元側の糸２０・２１は撚りが戻らないため、予め解撚しておく従来の方法に比べて、糸の長手方向に関する撚りの変化が少ないという利点もある。
【００４３】
第二に、本実施の継ぎ目３０は、従来のスプライサーによる継ぎ目３１と比べて絡み合う力が強い（より強い張力を付加しても継ぎ目で断線しない）。これは、前述したように、従来のスプライサーによる継ぎ目３１はファイバがある程度同じ方向に旋回して絡み合っているのに対し、本実施の継ぎ目３０は振動したファイバ同士がランダムに絡み合うことによる。
【００４４】
第三に、本実施の継ぎ目３０は、従来のスプライサーによる継ぎ目３１と比べて継ぎ目を小さくすることができる。これは前述の絡み合う力が強いこととも関係している。すなわち、従来のスプライサーによる継ぎ目３１では、絡み合う力が弱いため、その分糸継作業時に重なり合う糸端部の長さを大きくとる必要がある（だいたい１５ｍｍ程度）ことによる。
【００４５】
第四に、従来のスプライサーによる継ぎ目３１は、他の部位（糸２５・２６の胴体部）と比較すると、糸の周方向に略均一に膨らみ、段差が形成される。さらに、図１４に示すように、継ぎ目３１の両端の段差がある部分にはファイバが毛羽立った形状のテール２５ａ・２６ａが形成されている。例えばニット編機において編針を通過する場合、糸２５・２６は長手方向に送られ、編み針の鉤爪部に当接しつつ摺動される訳であるが、該テール２５ａ・２６ａはちょうど継ぎ目３１の両端部（糸２５・２６の胴体部と比較して段差が生じる箇所）に、糸２５・２６の摺動方向に逆らう方向に形成されている。従って、ノットが編針の鉤爪部を通過する場合に比べれば可能性はかなり低いものの、継ぎ目３１は鉤爪部を通過する際に引っかかる場合がある。
【００４６】
これに対し、本実施の継ぎ目３０は、図１３に示すように連結部２３が糸の周方向において特定の方向にのみわずかに突出した形状であり、連結部２３の突出した先端部分より毛羽立ちの少ないテール２４が形成されている。そして、糸の周方向において継ぎ目３０の突出方向の反対側は境界部２３ａとなっており、糸２０・２１が突起や段差無く糸継ぎされた状態になっている。
【００４７】
このように、本実施の継ぎ目３０は、従来のスプライサーによる継ぎ目３１と比べて継ぎ目が小さく、かつ糸の周方向において一方向にのみわずかに突出し、その先端にテール２４が形成されており、二本の糸２０・２１が平滑に連続した状態の境界部２３ａを有している。このことから、糸２０・２１がニット編機等において使用され、編針の鉤爪部を摺動しつつ通過する際にも、継ぎ目３０は境界部２３ａが該鉤爪部に当接するように旋回するので、継ぎ目２３が編針に引っかかって断線する確率が従来の継ぎ目３１に比べて低い。そして、断線の確率が格段に低下することは、断線時のやり直しが困難なニット編機において、特に有効性が高い。また、ノットや従来のスプライサーによる継ぎ目は、断面積や糸の撚り状態が他の部位と異なることから、手触りや、染色の具合が他の部位と異なるという問題があったが、本実施の継ぎ目３０は、境界部２３ａの左右で糸２０・２１の撚り状態が変化することがなく、手触りや、染色の具合への影響が小さい。また、連結部２３およびテール２４は前述した如く、ニット編機等で使用した場合、鉤爪部と当接しないように旋回するため、結果としてセーターなどの衣類等の内側に連結部２３およびテール２４が位置する形になることから、外観を損ねたり、手触りで違和感を覚えることがない。
【００４８】
【発明の効果】
本発明は、以上のように構成したので、以下に示すような効果を奏する。
【００４９】
即ち、請求項１に示す如く、複数の糸の先端部を同じ方向に重ね合わせ、該先端部を糸継孔内に挿入し、該先端部に圧縮流体を作用させることにより、複数の糸を連結させるので、
強固かつサイズの小さい連結部が形成可能である。また糸端部を予め解撚しておく必要がなく、糸継作業を簡略化することが可能である。
【００５０】
請求項２に示す如く、複数の糸の先端部を同じ方向に重ね合わせ、該先端部を糸継孔内に挿入し、該先端部に圧縮流体を作用させる際に、糸端の根元側を拘束し、糸端先端側をフリー状態として圧縮流体を作用させるので、
圧縮空気の流れにより、拘束した個所よりも下流側の糸端が、特にノズル孔より下流側に位置する部分が解撚されて、互いに複雑に絡み合うことができる。
【００５１】
請求項３に示す如く、重ね合わせた糸端に対してほぼ直角方向に圧縮流体を作用させるので、
圧縮空気の流れにより、糸の先端部が解撚されるとともに、互いに複雑に絡み合う。結果として、圧縮流体が作用する部位において、解撚されたファイバ同士が強固に絡み合った小さな連結部を形成することができる。
【００５２】
請求項４に示す如く、糸継孔が形成される本体部が、糸継孔の両端面を通る断面で二分割されているとともに、該糸継孔内に圧縮流体を噴出するための孔が一つ以上設けられているので、糸継孔が設けられている部材が二分割されておらず、両端面を通る挿入溝を形成することにより糸を糸継孔に挿入する従来の方法に比べ、糸の挿入が容易になるだけでなく、糸の挿入を考慮して大きな挿入溝を設ける必要がないので糸継孔の密閉性が高く、糸に作用させる圧縮流体（空気などの気体）を効率よく糸に作用させることが可能である。このことは後述する継ぎ目の強度が向上する（断線しにくい）とともに、糸に作用させる圧縮流体の圧力が従来法と比較して小さい場合でも継ぎ目の強度が得られるという利点がある。
【００５３】
請求項５に示す如く、糸継孔が形成される本体部が、糸継孔の両端面を通る断面で二分割されているとともに、該ニ分割された各部材を合わせて糸継ぎ孔を構成したときに、該二部材間に所定の大きさのエア逃がし用の隙間が形成されるので、糸継孔内の圧縮流体の流れ方を適宜コントロールすることができる。
【００５４】
請求項６に示す如く、糸継孔が形成される本体部に、該糸継孔に糸継ぎされる二本の糸端部を引き揃えて、その端部が同じ方向を向くように横架したときに、二本の糸端の中途部を拘束する糸止め溝を設けたので、
該糸止め溝により二本の糸端の中途部が緩やかに拘束されることとなり、圧縮空気の流れによって、拘束した個所よりも下流側の糸端が、特にノズル孔より下流側に位置する部分が解撚されて、互いに複雑に絡み合うことができる。
【００５５】
請求項７に示す如く、糸継孔が形成される本体部に、該糸継孔に糸継ぎされる二本の糸端部を引き揃えて、その端部が同じ方向を向くように横架したときに、ニ分割された本体部が合わさった状態で二本の糸端の中途部をクランプする、クランプ部材を設けたので、
糸継溝に横架される糸がクランプ部材によりクランプされ、その載置位置が固定されることとなる。
これにより、糸継ぎ時の糸の解撚度合いや絡み度合い、継ぎ目が形成される位置から糸端までの寸法等のばらつきが減少し、糸継ぎした糸及び結び目の品質を安定させることができる。
【００５６】
請求項８に示す如く、糸継孔が形成される本体部に、該糸継孔に糸継ぎされる二本の糸端部を引き揃えて、その端部が同じ方向を向くように横架したときに、該糸端部の先端側を切断するカッター部材を設けたので、
該カッター部材により糸端の先端側を切断することができ、糸における、クランプ部材によりクランプされた部分から切断された部分までの寸法を一定にすることができる。
これにより、糸継ぎ時の糸の解撚度合いや絡み度合い、継ぎ目が形成される位置から糸端までの寸法等のばらつきが減少し、糸継ぎした糸及び結び目の品質を安定させることができる。
【００５７】
請求項９に示す如く、前記クランプ部材を糸継孔の一端に配置し、カッター部材を糸継孔の他端に配置したので、
糸が固定される位置から圧縮空気が噴出するノズル孔までの寸法、及び該ノズル孔から糸端までの寸法を一定にすることができ、結び目の品質を一定とすることができる。
【００５８】
請求項１０に示す如く、糸継孔の両側面に開口する二つの開口部のうち、二本の糸の根元側の開口部の断面積が他の開口部の断面積より小さくしてあるので、糸継孔内に噴出された圧縮空気の多くは、糸の端部が配置されている側に流れ、糸継孔外部に排出されることになる。この圧縮空気の流れにより、糸の先端部において、ノズル孔より下流側に位置する部分は解撚されるとともに、互いに複雑に絡み合う。
結果として、開口部に対応する部位において、糸の解撚されたファイバ同士が強固に絡み合った小さな連結部を形成することができるとともに、該連結部よりさらに先端側は、解撚されたファイバが互いに強固に絡まず、束状になったテールを形成することができる。
【００５９】
請求項１１に示す如く、前記二つの開口部のうち、大きく構成された他の開口部は、糸継孔の側面に形成される排気壁と、排気壁と連通する排気孔とで構成されるので、糸継孔内に噴出された圧縮空気が、乱れることなく安定して、糸の先端部が位置するカッター部材側へ向かって一方向に流れ、糸継孔の外部に排出されることとなる。この圧縮空気の乱れることのない一方向への流れにより、糸の先端部において、安定した継ぎ目を形成することが可能となる。
【００６０】
請求項１２に示す如く、複数の糸の繊維がランダムに絡み合った連結部と、該連結部より突出した一本のテールからなるので、予め二本の糸の先端部を解撚しておかなくとも、糸継ぎを行うことが可能である。また、糸の長手方向に関する撚りの変化が少なく、連結部の強度が高く断線しにくい。さらに、継ぎ目を従来のスプライサーと比較して小さくすることができるとともに、連結部の突出が糸の全周方向でなく特定の方向であることから編針に引っかかって断線を起こす可能性を低減することが可能であり、断線時のやり直しが困難なニット編機において特に有効性が高い。
【図面の簡単な説明】
【図１】本実施の一例である糸継装置を示す斜視図。
【図２】本実施の一例である糸継装置を示す右側面図。
【図３】糸継部材を示す平面図。
【図４】本実施の一例である糸継方法において糸をセットした状態を示す図。
【図５】本実施の一例である糸継方法において糸継孔に糸がセットされた状態を示す図。
【図６】本実施の一例である糸継方法において糸継作業後の糸を示す図。
【図７】本実施の第二例にかかる糸継装置を示す斜視図。
【図８】同じく上部糸継部材を上方回動した状態の糸継装置を示す左側面図。
【図９】同じく上部糸継部材を上方回動した状態の糸継装置を示す右側面図。
【図１０】同じく上部糸継部材を上方回動した状態の糸継装置を示す正面図。
【図１１】同じく上部糸継部材を下方回動した状態の糸継装置を示す右側面図。
【図１２】同じく上部糸継部材を下方回動した状態の糸継装置を示す正面図。
【図１３】本実施の一例である継ぎ目を示す模式図。
【図１４】従来のスプライサーによる継ぎ目を示す模式図。
【符号の説明】
１　糸継装置
２　下部糸継部材
３　上部糸継部材
７　糸継孔
１１　流体導入孔
１２　ノズル孔
２０・２１　糸
２３　連結部
２４　テール
３０　継ぎ目[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a technology for splicing spun yarn.
More specifically, the present invention relates to a technique for piecing two yarn ends by overlapping the yarn ends in the same direction and applying a compressed fluid such as air to the overlapped portion.
[0002]
[Prior art]
Conventionally, as a yarn splicing device, a device called a knotter that forms a knot (knot) such as a Fisherman knot or a Weaver knot and performs a yarn splicing, or untwists two yarn ends in advance, and the yarn end The two yarn ends are swirled and vibrated by applying a compressed fluid (compressed air or the like) as a swirling airflow to the overlapped portion so that the two yarn ends are entangled, A device called a splicer for performing piecing is known. The splicer is as described in Patent Document 1.
[0003]
[Patent Document 1]
Japanese Patent Publication No. 60-39767
[0004]
[Problems to be solved by the invention]
In the yarn joining method by forming a knot, since the knot portion protrudes over the entire circumference in the radial direction of the yarn as compared with other portions, it is caught by the knitting needle when passing through the knitting needle in the knitting process of the subsequent process, This was causing disconnection.
Further, the seam formed by the splicer has a smaller protruding amount than the knot, but may still break due to being caught on the knitting needle. The disconnection due to such a knitting needle, especially in a knitting machine, if the machine is stopped halfway and it is not easy to rejoin the yarn on the spot, the work must be restarted from the beginning. There was a problem with workability.
Also, the seams by knots and splicers differ in cross-sectional area and twisted state of yarn from other parts, and the feel and dyeing are different from other parts, but the seams by splicers are longer than other parts, There have been problems in that uneven dyeing is noticeable when woven into a woven fabric, and the characteristics of seams are largely changed.
[0005]
[Means for Solving the Problems]
The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
[0006]
That is, in the first aspect, the tips of the plurality of yarns are overlapped in the same direction, the tips are inserted into the yarn joining holes, and the compressed fluid acts on the tips to connect the plurality of yarns. It is to let.
[0007]
In the second aspect, when the tips of the plurality of yarns are overlapped in the same direction, and the tips are inserted into the yarn joining holes, and the compressed fluid acts on the tips, the root side of the yarn ends is restrained. Then, the compressed fluid acts on the yarn end tip side in a free state.
[0008]
According to the third aspect, the compressed fluid acts on the yarn ends overlapped in a direction substantially perpendicular to the yarn ends.
[0009]
According to the fourth aspect, the main body portion in which the yarn splicing hole is formed is divided into two by a cross section passing through both end surfaces of the yarn splicing hole, and one hole for ejecting a compressed fluid into the yarn splicing hole is provided. One or more are provided.
[0010]
In claim 5, the main body portion in which the yarn splicing hole is formed is divided into two by a cross section passing through both end surfaces of the yarn splicing hole, and the two divided members are combined to form a yarn splicing hole. Sometimes, a gap of a predetermined size for air release is formed between the two members.
[0011]
In claim 6, two yarn ends spliced into the yarn splicing hole are aligned with the main body portion in which the yarn splicing hole is formed, and the two yarn ends are horizontally laid so as to face the same direction. Occasionally, a thread stopper groove is provided to restrain a middle part of the two thread ends.
[0012]
In claim 7, two yarn ends spliced into the yarn splicing hole are aligned with the main body portion in which the yarn splicing hole is formed, and the two yarn ends are horizontally laid so as to face the same direction. Sometimes, a clamp member is provided which clamps the middle part of the two yarn ends in a state where the divided main parts are put together.
[0013]
In claim 8, two yarn ends spliced into the yarn splicing hole are aligned with the main body portion in which the yarn splicing hole is formed, and the two yarn ends are horizontally laid so as to face the same direction. Sometimes, a cutter member is provided for cutting the leading end side of the yarn end.
[0014]
In the ninth aspect, the clamp member is disposed at one end of the yarn splicing hole, and the cutter member is disposed at the other end of the yarn splicing hole.
[0015]
In the tenth aspect, among the two openings that are opened on both side surfaces of the yarn joining hole, the cross-sectional area of the opening at the root side of the two yarns is smaller than the cross-sectional area of the other opening. is there.
[0016]
According to claim 11, the other of the two openings, which is configured to be large, includes an exhaust wall formed on a side surface of the yarn splicing hole and an exhaust hole communicating with the exhaust wall. It is.
[0017]
In a twelfth aspect of the present invention, a plurality of yarn fibers are randomly entangled with each other, and one tail protrudes from the connection portion.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the invention will be described.
[0019]
First, a yarn splicing device 1 which is an example of the present yarn splicing device will be described with reference to FIGS. In the following description, `` yarn '' is a general term for spun yarns of cotton, wool, hemp and other natural fibers, so-called staple fibers obtained by short-cutting synthetic filament yarns, and staple fibers obtained by bundling these mixed fibers. Shall be. Further, "fiber" indicates a short fiber constituting the spun yarn.
[0020]
The yarn splicing device 1 mainly includes a lower yarn splicing member 2, an upper yarn splicing member 3, a holder 4, a fixing screw 5, and the like that constitute a main body. A hole 8 is formed in the lower yarn splicing member 2 so as to penetrate the left and right side surfaces of the lower yarn splicing member 2. A holder shaft for pivotally attaching the holder 4 to the lower yarn splicing member 2 in the hole 8. 6 is loosely fitted. The upper yarn splicing member 3 is screwed to the holder 4 by a fixing screw 5. On the lower surface of the upper yarn joining member 3, a yarn joining groove 13 and a contact surface 14 are provided.
In this embodiment, the holder 4 is configured to rotate with respect to the lower yarn splicing member 2. However, the present invention is not limited to this. The upper yarn splicing member 3 is separated from the lower yarn splicing member 2, and the What is necessary is just a structure in which the joint hole 7 opens largely. In this embodiment, the upper yarn joining member 3 is fixed to the holder 4 by a fastening member such as a fixing screw 5, but may be fixed by another method such as welding or bonding with an adhesive. Further, the upper yarn joining member 3 and the holder 4 may be integrally formed.
[0021]
As shown in FIG. 2, in a state where the holder 4 is rotated downward (shown by a two-dot chain line in FIG. 2), the contact surface 10 on the lower yarn joining member 2 side and the contact surface on the upper yarn joining member 3 side. The surface 14 abuts / adheres. The yarn splicing groove 9 of the lower yarn splicing member 2 and the yarn splicing groove 13 of the upper yarn splicing member 3 form a substantially circular yarn splicing hole 7 (a portion indicated by oblique lines in FIG. 2). . That is, the yarn splicing hole 7 is formed along the mating surface of the two divided members (the lower yarn splicing member 2 and the upper yarn splicing member 3). In other words, it is configured such that the mating surface of the two divided members comes to a position passing through both end faces of the yarn splicing hole 7 (in this embodiment, cylindrical shape).
At this time, in the present embodiment, the slope 15 on the lower yarn splicing member 2 side does not contact the slope 16 on the upper yarn splicing member 3 side, and a gap 17 having a predetermined size is formed. This is for appropriately controlling the flow of the compressed fluid in the yarn splicing hole 7, such as changing the width of the gap 17 or closing the gap 17 depending on the type and thickness of the yarn. You may.
On the other hand, in a state where the holder 4 is rotated upward (shown by a solid line in FIG. 2), the yarn splicing hole 7 where two yarn ends are set at the time of the yarn splicing operation is largely opened. The two yarn ends can be easily set. A plate 18 is provided at one end of the yarn joining hole 7. The plate 18 is provided with a thread stopping groove 19.
[0022]
The fluid introduction hole 11 is bored from the lower surface of the lower yarn joining member 2 and connected to a compressed air pipe from an air compressor (not shown). Then, a nozzle hole 12 communicating the upper end of the fluid introduction hole 11 and the yarn splicing hole 7 is formed.
Further, a bolt hole 22 for bolt fastening is formed in a front portion of the lower yarn joining member 2 so as to penetrate from an upper surface to a lower surface.
[0023]
In the present embodiment, the yarn splicing hole 7 is substantially circular in cross section, but may be formed in various shapes such as a V-shape, a U-shape, and a rectangle, and is not limited. That is, the cross-sectional shape, size, and length of the yarn splicing hole are determined by the properties of the yarn to be spliced (type, fiber thickness, twisting method), the pressure of the compressed fluid to be applied, and the properties (number, shape, It is appropriately selected depending on (arrangement, size) and the like.
Further, in one example of the present embodiment, one oval type nozzle hole 12 extending in the longitudinal direction is arranged at substantially the center in the longitudinal direction of the yarn splicing hole 7, and the compressed fluid is jetted toward the center of the yarn splicing hole 7. However, the shape was substantially circular, rectangular, a plurality of them were arranged, the yarn splicing holes 7 were arranged at positions offset from the center in the longitudinal direction, the size of the nozzle holes was changed, or the nozzle holes were shifted from the center. The compressed fluid may be ejected in the direction. That is, it may be appropriately selected depending on the properties (type, fiber thickness, twisting method) of the yarn, the pressure of the compressed fluid to be applied, and the cross-sectional shape or length of the yarn splicing hole 7, and is not limited.
[0024]
As described above, since the yarn splicing hole 7 formed in the lower yarn splicing member 2 and the upper yarn splicing member 3 is divided into two sections at the cross-sections passing through both end surfaces, the conventional method (the yarn splicing hole is provided). The method of inserting the yarn into the yarn splicing hole by forming the insertion groove passing through both end surfaces without the divided member being divided into two parts makes the insertion of the yarn easier, as well as the insertion of the yarn. Since it is not necessary to provide a large insertion groove in consideration of the above, the gap 17 can be reduced, the sealing property of the yarn splicing hole is high, and the compressed fluid (gas such as air) acting on the yarn can efficiently act on the yarn. It is possible. This has the advantage that the strength of the seam described later is improved (the wire is hard to be broken), and the strength of the seam can be obtained even when the pressure of the compressed fluid acting on the yarn is smaller than that of the conventional method.
[0025]
Next, an example of the yarn joining method of this embodiment will be described with reference to FIGS.
As shown in FIG. 4, the yarn ends of the two yarns 20 and 21 to be spliced are aligned, overlapped so that the ends are directed in the same direction, and laid over the yarn joining groove 9. At this time, the ends of the two yarns 20 and 21 are set so that the middle portions of the two yarns 20 and 21 are inserted into the yarn fixing grooves 19 so that the plate 18 is not provided. By doing so, the two yarns 20 and 21 are gently restrained by the yarn stopping grooves 19 in the middle part. The two yarns 20 and 21 are clamped by a clamping means (not shown) at a position closer to the base than the thread stopper groove 19 provided with the plate 18.
Subsequently, as shown in FIG. 5, when the holder 4 is rotated downward, the lower yarn splicing member 2 and the upper yarn splicing member 3 abut on the abutting surfaces 10 and 14, and the yarn having a substantially circular cross-sectional side view. The splicing hole 7 is formed, and the two yarns 20 and 21 are inserted into the splicing hole 7. In this state, the holder 4 is fixed so that the lower yarn splicing member 2 and the upper yarn splicing member 3 do not separate from each other, and the compressed air piping from an air compressor (not shown) connected to the fluid introduction hole 11 passes through the nozzle hole 12. A compressed fluid (compressed air in this embodiment) is jetted into the yarn splicing hole 7.
[0026]
At this time, the openings of the yarn splicing holes 7 are located on both side surfaces of the yarn splicing device 1, but of the two openings, the root side of the two yarns 20 and 21 (the ends of the yarns 20 and 21 are arranged). On the other side, the cross-sectional area of the opening is reduced by the plate 18.
Therefore, most of the compressed air jetted into the yarn splicing hole 7 flows to the side where the ends of the yarns 20 and 21 are arranged, and is discharged outside the yarn splicing hole 7. Due to the flow of the compressed air, the portions located downstream of the nozzle holes 12 at the tips of the yarns 20 and 21 are untwisted and intertwined with each other in a complicated manner.
As a result, as shown in FIG. 6, a small connecting portion 23 (a portion where the untwisted fibers of the yarns 20 and 21 are tightly entangled) is formed at a portion corresponding to the nozzle hole 12, and the connecting portion is formed. Further on the tip side than 23, the untwisted fibers do not tightly entangle with each other, and a bundled tail 24 is formed. Hereinafter, the joint portion 23, the boundary portion 23a, and the tail 24 are collectively referred to as a joint 30 (see FIG. 13).
In this embodiment, the ends of the yarns 20 and 21 are not twisted in advance, but the yarn can be spliced in the same manner even if the yarns are untwisted in advance. The twisted state is not limited. However, if the yarn splicing method of this embodiment is used after the yarn ends are twisted to some extent by pulling in advance, a strong connecting portion can be formed even if the pressure of the compressed fluid is small. There are advantages that are possible.
[0027]
As described above, the tips of the two yarns are overlapped in the same direction, and the tips are inserted into the yarn splicing holes, and untwisted and connected by applying a compressed fluid to the tips, so that they are strong and Small connecting parts can be formed. Further, it is not necessary to untwist the yarn end in advance, and the operation can be simplified.
[0028]
In the present embodiment, the yarn splicing device 1 composed of two divided members is used. However, the workability is slightly inferior. For example, if the same shape of the yarn splicing hole and the nozzle hole is provided in the integrally molded member, the same applies. Therefore, the yarn splicing device used is not limited to the present embodiment.
[0029]
Next, a second example of this embodiment of the yarn joining device will be described.
The yarn splicing device 51 of the second example shown in FIGS. 7 and 8 includes a yarn splicing device 1 of the first example including the lower yarn splicing member 2, the upper yarn splicing member 3, the holder 4, and the like. A clamp member 68, a cutter member 69, and an opening / closing arm 70 are provided, and the other portions have the same configuration as the yarn joining device 1.
[0030]
The clamp member 68 includes a clamp plate 68a disposed at one end of the yarn splicing hole 7 instead of the plate 18 of the yarn splicing device 1, and a holder side surface 4a on the side where the clamp plate 68a is disposed. ing.
The clamp plate 68a is formed with a guide groove 68b on which the two yarns 20 and 21 that are horizontally laid on the yarn joining groove 9 with the yarn end portions aligned are placed. A notch is provided at a lower portion of the holder side surface 4a to secure a passage for the yarns 20 and 21 when the holder 4 is rotated upward to set the yarns 20 and 21 in the yarn joining groove 9 and the guide groove 68b. The part 4b is formed.
[0031]
The cutter member 69 includes a lower blade 69a and an upper blade 69b arranged at the other end of the yarn splicing hole 7. The lower blade 69a is attached to the lower yarn splicing member 2 side, and the upper blade 69b is mounted to the upper yarn splicing member 3 side. With the vertical turning operation of the upper yarn splicing member 3 with respect to the lower yarn splicing member 2, The lower blade 69a and the upper blade 69b open and close. An opening / closing arm 70 is attached to the upper surface of the holder 4 by a fastening member 55 in the yarn splicing device 51. By gripping the opening / closing arm 70, the lower yarn splicing member 2 of the upper yarn splicing member 3 is operated. Can easily be moved up and down.
[0032]
The operation of the clamp member 68 and the cutter member 69 when the piecing is performed by the piecing device 51 configured as described above will be described.
As shown in FIGS. 9 and 10, when performing the piecing, first, the lower piecing member 2 is rotated upward so that the two yarns 20 and 21 are aligned on the piecing groove 9. Lay down.
As described above, when the lower yarn joining member 2 is rotated upward, the notches 4b secure the passages of the yarns 20 and 21 between the holder side surface 4a and the guide groove 68b of the clamp plate 68a. The yarns 20 and 21 can move freely while the placement position is guided by the yarn joining groove 9 and the guide groove 68b.
The cutter member 69 is open, and the yarns 20 and 21 pass between the lower blade 69a and the upper blade 69b.
[0033]
As shown in FIGS. 11 and 12, when the upper yarn joining member 3 is rotated downward from this state, the clamp plate 68a on the lower yarn joining member 2 side and the holder side surface 4a on the upper yarn joining member 3 side are viewed from the side. And the paths for the yarns 20 and 21 disappear.
As a result, an intermediate portion of the yarn ends of the yarns 20 and 21 is clamped at one end of the yarn joining hole 7 by the clamp plate 68a constituting the clamp member 68 and the holder side surface 4a.
That is, in a state where the lower yarn splicing member 2 and the upper yarn splicing member 3 which are the two divided main parts are put together, the two yarns 20 spliced into the yarn splicing holes 7 formed in the main body part. When the yarn ends of the yarns 21 are aligned and laid so that the ends are oriented in the same direction, the middle part of the two yarn ends is clamped by the clamp member 68.
The placement position of the yarns 20 and 21 laid in the yarn joining groove 9 is fixed by being clamped by the clamp member 68.
[0034]
On the other hand, at the other end of the yarn splicing hole 7, when the upper yarn splicing member 3 is rotated downward, the lower blade 69a on the lower yarn splicing member 2 side and the upper blade 69b on the upper yarn splicing member 3 side. In order to visually overlap, the tip ends of the yarn ends of the yarns 20 and 21 are cut by the lower blade 69a and the upper blade 69b.
By cutting the leading end side of the yarn end, the dimensions of the yarns 20 and 21 from the portion clamped by the clamp member 68 to the cut portion can be made constant. In the case of this example, the clamp member 68 is arranged at one end of the yarn splicing hole 7 and the cutter member 69 is arranged at the other end of the yarn splicing hole 7. It becomes the size of.
[0035]
As described above, the positions of the yarns 20 and 21 are fixed by the clamp member 68, and the yarns 20 and 21 are cut at a fixed length by the cutter member 69. Variations in the degree of untwisting, the degree of entanglement, and the size from the position where the seam is formed to the end of the yarn are reduced, and the quality of the spliced yarns 20 and 21 and the knot can be stabilized.
In particular, by arranging the clamp member 68 at one end of the yarn splicing hole 7 and the cutter member 69 at the other end of the yarn splicing hole 7, a nozzle from which compressed air is ejected from the position where the yarns 20 and 21 are fixed is provided. The size up to the hole 12 and the size from the nozzle hole 12 to the yarn end can be made constant, and the quality of the knot can be made constant.
In the case where the clamp member 68 is provided as in the yarn splicing device 51, a clamping means for clamping the yarns 20 and 21 is provided at the root side of the yarn fixing groove 19 as in the case of the yarn splicing device 1 described above. No need to provide.
[0036]
In the yarn splicing device 51, an exhaust groove 74 is formed in the lower yarn splicing member 2 at an end of the yarn splicing hole 7 on the cutter member 69 side, in a direction orthogonal to the yarn splicing hole 7. An exhaust hole 75 is formed on a side surface of the holder 4 on the side where the cutter member 69 is disposed. With the holder 4 rotated downward, the exhaust groove 74 and the yarn splicing hole 7 communicate with each other, and the exhaust groove 74 and the exhaust hole 75 communicate with each other.
[0037]
When the holder 4 is rotated downward, both side portions of the yarn splicing hole 7 are closed by the clamp member 68 and the cutter member 69, respectively. A large opening 75 opens to the outside. On the other hand, since the clamp member 68 side of the yarn splicing hole 7 is closed by the clamp member 68, the opening is only a slight gap between the lower yarn splicing member 2 and the clamp member 68, and the cutter member The opening is smaller than the 69 side.
That is, the cross-sectional area of the opening on both side surfaces of the yarn splicing hole 7 is such that the root side of the yarns 20 and 21 where the clamp member 68 is arranged is closer to the tip side of the yarns 20 and 21 where the cutter member 69 is arranged. It is configured smaller than one.
[0038]
Therefore, the compressed air jetted into the yarn splicing hole 7 flows in one direction toward the cutter member 69 where the tips of the yarns 20 and 21 are located, without being disturbed, and the outside of the yarn splicing hole 7 Will be discharged.
Due to the one-way flow of the compressed air without turbulence, the portions located downstream of the nozzle holes 12 at the tips of the yarns 20 and 21 are untwisted and intricately entangled with each other to form a stable seam 30. Can be formed.
[0039]
Next, the seam obtained by the yarn splicing method of the present embodiment will be described with reference to FIGS.
[0040]
In the case of splicing by a conventional splicer, as shown in FIG. 14, the yarn ends of the yarns 25 and 26 are untwisted in advance, and the yarn ends are overlapped or crossed so that the yarn ends are opposite to each other. Compressed fluid (air) is ejected from two different locations in the yarn splicing hole. At this time, the untwisted yarn end is formed in the spout hole of the compressed air so as to turn in the same direction as the twisting direction of the yarns 25 and 26 in the yarn splicing hole, thereby forming the connecting portion 27 in the conventional splicer. Has a twist in the same direction as the yarns 25 and 26. Hereinafter, the joint 27 and the tails 25a and 26a are collectively referred to as a joint 31.
[0041]
On the other hand, as shown in FIG. 13, the seam 30 obtained by the yarn splicing method of this embodiment has several advantages as compared with the seam 31 obtained by the conventional splicer as shown in FIG.
[0042]
First, the seam 30 of the present embodiment can perform piecing without first untwisting the ends of the yarns 20 and 21. This is because the seam 31 by the conventional splicer had to be twisted in the same direction as the yarn, so it was necessary to untwist in advance and then turn the untwisted yarn end in the twisting direction. Because it was. On the other hand, in the present embodiment, it is not necessary to consider the twisting direction, and if compressed air is blown from the side surface of the yarn, the portion hit by the compressed air is untwisted, and fibers from the two yarns are randomly entangled. A seam 30 is formed.
Furthermore, since the twist of the yarns 20 and 21 on the root side from the portion where the compressed air hits does not return, there is an advantage that the change in the twist in the longitudinal direction of the yarn is small as compared with the conventional method of untwisting in advance.
[0043]
Secondly, the seam 30 of the present embodiment has a stronger entanglement force than the seam 31 formed by the conventional splicer (the seam does not break at the seam even when a stronger tension is applied). This is because, as described above, the seam 31 of the conventional splicer is such that the fibers are swirled and entangled in the same direction to some extent, whereas the seam 30 of the present embodiment is such that the vibrated fibers are entangled randomly.
[0044]
Third, the seam 30 of the present embodiment can be smaller than the seam 31 formed by a conventional splicer. This is related to the strong entanglement described above. That is, in the seam 31 formed by the conventional splicer, since the entanglement force is weak, it is necessary to increase the length of the overlapping yarn end portion (about 15 mm) at the time of the yarn splicing operation.
[0045]
Fourth, the seam 31 formed by the conventional splicer swells substantially uniformly in the circumferential direction of the yarn as compared with other portions (the body portion of the yarns 25 and 26), and a step is formed. Further, as shown in FIG. 14, tails 25a and 26a are formed in portions where both ends of the seam 31 have a step, in which the fibers are fluffy. For example, when passing through a knitting needle in a knitting machine, the yarns 25 and 26 are fed in the longitudinal direction and slid while abutting on the claw portions of the knitting needle. It is formed in a portion (a portion where a step is generated as compared with the body portion of the yarns 25 and 26) in a direction opposite to the sliding direction of the yarns 25 and 26. Therefore, the seam 31 may be caught when passing through the claw portion, although the possibility is considerably lower than when the knot passes through the claw portion of the knitting needle.
[0046]
On the other hand, the joint 30 of the present embodiment has a shape in which the connecting portion 23 slightly protrudes only in a specific direction in the circumferential direction of the yarn as shown in FIG. A small tail 24 is formed. In the circumferential direction of the yarn, the side opposite to the direction in which the seam 30 protrudes is a boundary portion 23a, and the yarns 20 and 21 are spliced without any protrusions or steps.
[0047]
As described above, the seam 30 according to the present embodiment has a smaller seam than the seam 31 formed by the conventional splicer, and slightly protrudes in only one direction in the circumferential direction of the yarn, and the tail 24 is formed at the end thereof. The yarns 20 and 21 have a boundary portion 23a in a state where they are smoothly continuous. For this reason, even when the yarns 20 and 21 are used in a knit knitting machine or the like and slide through the claw portion of the knitting needle, the seam 30 pivots so that the boundary portion 23a comes into contact with the claw portion. The probability that the seam 23 is caught by the knitting needle and breaks is lower than that of the conventional seam 31. The fact that the probability of disconnection is significantly reduced is particularly effective in a knitting knitting machine in which it is difficult to start over at the time of disconnection. In addition, the seams formed by knots and conventional splicers had a problem that the feel and dyeing conditions were different from those of other parts because the cross-sectional area and the twisting state of the yarn were different from those of other parts. In 30, the twisted state of the yarns 20 and 21 does not change on the left and right sides of the boundary portion 23 a, and the influence on the feel and the state of dyeing is small. Further, as described above, when the connecting portion 23 and the tail 24 are used in a knitting knitting machine or the like, the connecting portion 23 and the tail 24 are rotated so as not to come into contact with the claw portion. Since there is no shape, the appearance is not impaired and the user does not feel uncomfortable by touch.
[0048]
【The invention's effect】
The present invention is configured as described above, and has the following effects.
[0049]
That is, as described in claim 1, the tip portions of the plurality of yarns are overlapped in the same direction, the tip portions are inserted into the yarn joining holes, and the compressed fluid acts on the tip portions. Because they are linked,
A strong and small-sized connecting portion can be formed. Further, it is not necessary to untwist the yarn end in advance, and the yarn joining operation can be simplified.
[0050]
As described in claim 2, when the tip portions of the plurality of yarns are overlapped in the same direction, and the tip portions are inserted into the yarn splicing hole, and the compressed fluid acts on the tip portions, the root side of the yarn end is positioned at the bottom. As the compressed fluid acts by restraining and setting the yarn end tip side to free state,
Due to the flow of the compressed air, the yarn end downstream of the constrained portion, particularly the portion located downstream of the nozzle hole, is untwisted and can be intertwined with each other in a complicated manner.
[0051]
As described in claim 3, the compressed fluid acts on the yarn ends superposed in a direction substantially perpendicular to the yarn ends.
Due to the flow of compressed air, the ends of the yarns are untwisted and intertwined with each other. As a result, a small connection portion where the untwisted fibers are tightly entangled with each other can be formed at a portion where the compressed fluid acts.
[0052]
As described in claim 4, the main body portion in which the yarn splicing hole is formed is divided into two by a cross section passing through both end surfaces of the yarn splicing hole, and a hole for ejecting a compressed fluid into the yarn splicing hole is provided. Since one or more are provided, the member provided with the yarn splicing hole is not divided into two, and compared to the conventional method of inserting the yarn into the yarn splicing hole by forming an insertion groove passing through both end surfaces In addition to facilitating the insertion of the yarn, there is no need to provide a large insertion groove in consideration of the insertion of the yarn. It is possible to efficiently act on the yarn. This has the advantage that the strength of the seam described later is improved (the wire is hard to be broken), and the strength of the seam can be obtained even when the pressure of the compressed fluid acting on the yarn is smaller than that of the conventional method.
[0053]
As described in claim 5, the main body portion in which the yarn splicing hole is formed is divided into two by a cross section passing through both end surfaces of the yarn splicing hole, and the two divided members are combined to form a yarn splicing hole. When this is done, a gap for air release having a predetermined size is formed between the two members, so that the flow of the compressed fluid in the yarn splicing hole can be appropriately controlled.
[0054]
As shown in claim 6, two yarn ends to be spliced into the yarn splicing hole are aligned with the main body portion in which the yarn splicing hole is formed, and the two yarn ends are oriented horizontally in the same direction. Since the thread stop groove that restrains the middle of the two thread ends was provided when
The middle portion of the two yarn ends is gently restrained by the yarn stopping groove, and the flow of the compressed air causes the yarn end downstream of the restrained portion to be located particularly downstream of the nozzle hole. Can be untwisted and intertwined with each other in a complicated manner.
[0055]
As shown in claim 7, two yarn ends spliced to the yarn splicing hole are aligned with the main body portion in which the yarn splicing hole is formed, and the two yarn ends are oriented horizontally in the same direction. Since the clamp member is provided to clamp the middle part of the two yarn ends when the two divided body parts are
The yarn suspended in the yarn joining groove is clamped by the clamp member, and the mounting position is fixed.
Thereby, the degree of untwisting and entanglement of the yarn at the time of splicing, and variations in dimensions from the position where the seam is formed to the end of the yarn are reduced, and the quality of the spliced yarn and the knot can be stabilized.
[0056]
As shown in claim 8, two yarn ends to be spliced into the yarn splicing hole are aligned with the main body portion in which the yarn splicing hole is formed, and the two yarn ends are oriented horizontally in the same direction. Since the cutter member that cuts the tip end of the yarn end was provided when
The tip end of the yarn end can be cut by the cutter member, and the dimension of the yarn from the portion clamped by the clamp member to the cut portion can be made constant.
Thereby, the degree of untwisting and entanglement of the yarn at the time of splicing, and variations in dimensions from the position where the seam is formed to the yarn end are reduced, and the quality of the spliced yarn and the knot can be stabilized.
[0057]
As described in claim 9, the clamp member is disposed at one end of the yarn splicing hole, and the cutter member is disposed at the other end of the yarn splicing hole.
The dimension from the position where the yarn is fixed to the nozzle hole from which the compressed air is ejected, and the size from the nozzle hole to the yarn end can be made constant, and the quality of the knot can be made constant.
[0058]
According to the tenth aspect, among the two openings that are opened on both side surfaces of the yarn joining hole, the cross-sectional area of the opening at the root side of the two yarns is smaller than the cross-sectional area of the other opening. Most of the compressed air injected into the yarn splicing hole flows to the side where the end of the yarn is arranged, and is discharged to the outside of the yarn splicing hole. Due to the flow of the compressed air, the portion located downstream of the nozzle hole at the tip of the yarn is untwisted and intertwined with each other.
As a result, in the portion corresponding to the opening, a small connection portion in which the untwisted fibers of the yarn are tightly entangled can be formed, and the untwisted fiber is further advanced from the connection portion. The bundled tails can be formed without being tightly entangled with each other.
[0059]
According to another aspect of the present invention, of the two openings, the other large opening is formed of an exhaust wall formed on a side surface of the yarn splicing hole and an exhaust hole communicating with the exhaust wall. Therefore, the compressed air ejected into the yarn splicing hole flows in one direction toward the cutter member side where the tip of the yarn is positioned stably without being disturbed, and is discharged outside the yarn splicing hole. Become. This one-way flow of the compressed air without turbulence makes it possible to form a stable seam at the leading end of the yarn.
[0060]
As shown in claim 12, since a plurality of yarn fibers are composed of a connecting portion randomly intertwined and a single tail projecting from the connecting portion, the ends of the two yarns need not be untwisted in advance. In both cases, piecing can be performed. In addition, the change in twist in the longitudinal direction of the yarn is small, and the strength of the connecting portion is high, and disconnection is difficult. Furthermore, the seam can be made smaller than that of the conventional splicer, and the possibility that the connecting portion protrudes from the knitting needle in a specific direction instead of the entire circumferential direction of the yarn and cause a disconnection can be reduced. This is particularly effective in a knitting knitting machine in which it is difficult to redo when a wire breaks.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a yarn joining device according to an embodiment of the present invention.
FIG. 2 is a right side view showing the yarn splicing device according to the embodiment.
FIG. 3 is a plan view showing a yarn joining member.
FIG. 4 is a view showing a state in which a yarn is set in the yarn joining method according to the embodiment.
FIG. 5 is a view showing a state in which a yarn is set in a yarn splicing hole in the yarn splicing method according to the embodiment.
FIG. 6 is a view showing a yarn after a yarn joining operation in the yarn joining method according to the embodiment.
FIG. 7 is a perspective view showing a yarn splicing device according to a second embodiment of the present invention.
FIG. 8 is a left side view showing the yarn splicing device with the upper yarn splicing member rotated upward.
FIG. 9 is a right side view showing the yarn splicing device in a state where the upper yarn splicing member is rotated upward.
FIG. 10 is a front view showing the yarn splicing device with the upper yarn splicing member rotated upward.
FIG. 11 is a right side view showing the yarn splicing device with the upper yarn splicing member rotated downward.
FIG. 12 is a front view showing the yarn splicing device with the upper yarn splicing member rotated downward.
FIG. 13 is a schematic view showing a joint according to an example of the present embodiment.
FIG. 14 is a schematic view showing a seam formed by a conventional splicer.
[Explanation of symbols]
1 Yarn splicing device
2 Lower thread joining member
3 Upper yarn splicing member
7 Yarn joint hole
11 Fluid introduction hole
12 nozzle holes
20 ・ 21 yarn
23 Connecting part
24 tail
30 seams

Claims

A spun yarn, wherein a plurality of yarns are connected by overlapping tip portions of a plurality of yarns in the same direction, inserting the tip portions into a yarn splicing hole, and applying a compressed fluid to the tip portions. Splicing method.

The tips of a plurality of yarns are overlapped in the same direction, and the tips are inserted into the yarn splicing holes. When a compressed fluid is applied to the tips, the root side of the yarn end is restrained, and the yarn end tip side The spliced yarn splicing method according to claim 1, wherein the compressed fluid is caused to act in a free state.

3. The splicing method for spun yarn according to claim 1, wherein the compressed fluid acts on the overlapped yarn end in a direction substantially perpendicular to the yarn end.

The main body portion in which the yarn splicing hole is formed is divided into two by a cross section passing through both end surfaces of the yarn splicing hole, and one or more holes for ejecting a compressed fluid are provided in the yarn splicing hole. A yarn splicing device for spun yarn.

When the main body portion in which the yarn splicing hole is formed is divided into two by a cross section passing through both end surfaces of the yarn splicing hole, and when the two divided members are combined to form a yarn splicing hole, the two members are 5. The splicing device for spun yarn according to claim 4, wherein a gap for air release having a predetermined size is formed therebetween.

When the two yarn ends spliced into the yarn splicing hole are aligned with the main body portion in which the yarn splicing hole is formed, and the two yarn ends are horizontally laid so that the ends face in the same direction, the two yarn ends are aligned. 6. The splicing device for spun yarn according to claim 4, wherein a yarn stopping groove for restraining a middle portion of the yarn end is provided.

When the two yarn ends to be spliced into the yarn splicing hole are aligned in the main body portion where the yarn splicing hole is formed, and the yarn ends are horizontally laid so as to face in the same direction, the two parts are divided. The yarn splicing device for spun yarn according to claim 4 or 5, further comprising a clamp member that clamps a middle portion of the two yarn ends in a state where the main bodies are joined.

When two yarn ends to be spliced into the yarn splicing hole are aligned with the main body portion in which the yarn splicing hole is formed, and the yarn ends are laid horizontally so that the ends are oriented in the same direction, The splicing device for spun yarn according to any one of claims 4 to 7, further comprising a cutter member for cutting a tip end side of the portion.

The yarn splicing device according to claim 8, wherein the clamp member is disposed at one end of the yarn splicing hole, and the cutter member is disposed at the other end of the yarn splicing hole.

The cross-sectional area of the opening at the root side of the two yarns is smaller than the cross-sectional area of the other opening, of the two openings that open on both side surfaces of the yarn splicing hole. The splicing device for spun yarn according to any one of claims 8 to 8.

The other of the two openings, which is configured to be large, includes an exhaust wall formed on a side surface of the yarn splicing hole and an exhaust hole communicating with the exhaust wall. The splicing device for spun yarn according to claim 10.

A seam comprising a connecting portion in which fibers of a plurality of yarns are intertwined at random and a single tail protruding from the connecting portion.