JP4505890B2

JP4505890B2 - Synthetic fiber winding method and apparatus

Info

Publication number: JP4505890B2
Application number: JP24942799A
Authority: JP
Inventors: 純郎山口; 保鈴木; 弘隆中嶋; 克己園山; 一正山下; 照章西城
Original assignee: Toray Industries Inc
Current assignee: Toray Industries Inc
Priority date: 1998-09-04
Filing date: 1999-09-03
Publication date: 2010-07-21
Anticipated expiration: 2019-09-03
Also published as: JP2001139229A

Description

【０００１】
【発明の属する技術分野】
本発明は、糸条を巻き取る工程に適する。特に、合成繊維製造工程において、高速で巻取られかつ自動的に切替を行う巻取り機において特に効果を発揮する合成繊維の巻取り方法及び装置に関するものである。詳細には、糸条を糸巻き用ボビンに巻付けるに際し、前記糸条パッケージの外部で、棒状に巻かれた捨て糸となるテールバンチを巻付けないことによって、テールバンチの除去作業を不要とし、かつ高い切替成功率を維持する技術に関し、更に前記技術に付随し、テール割れのなく、かつ適正な糸長のテール糸（トランスファーテール）を形成する技術、及び巻上りパッケージの巻終りの糸端が巻上りパッケージ表層から落ちることを防止する技術に関するものである。
【０００２】
【従来の技術】
糸巻き用ボビンの自動切替え機構を持つ一般的な巻取り機について、図１、２および図３〜７を用いて説明する。
【０００３】
図１は多糸条型巻取り機の概略正面図であり、図２は多糸条型巻取り機の概略側面図である。図３〜図７は巻上がりパッケージから空ボビンへの自動切替え時の動作を１糸条について時系列的に表した概略図である。巻取装置１は、機枠に回転自在に取付けられたターレット板３と、ターレット板３に回転自在に取り付けられた２本のスピンドル４と、スピンドル４の上方に設置されたトラバース装置５と、スピンドル４に装着された糸巻き用空ボビン１６、あるいはボビンに巻取られた糸条に当接して所定の面圧を付与する接圧ローラー６と、接圧ローラー６の上方に設けられた上部糸切替え機構７と、糸条を巻上がりボビン１７から空ボビン１６に切替える際に糸道を規制するため、２本のスピンドル４の間の位置に設けられた糸道規制機構８と、糸条を空ボビン１６に巻付けるために空ボビン１６と糸道規制機構８の間に設けられた下部糸切替機構１２とにより構成されている。上述の上部糸切替え機構７は、トラバースガイドの綾振り方向に動作して、糸条を正規のトラバース領域の外に移動させ、糸条をテールバンチ巻き位置、及びテール巻き位置に案内する糸寄せガイド９、及びこれらの駆動源（図示せず）からなり、糸道規制機構８は、待機側にあった空ボビン１６が巻取り側に移動したとき、糸条が空ボビン周面に接触しないように糸道を規制し支持する糸道規制ガイド１０と、糸道を満巻きパッケージ１７の糸条巻取り表層における表層バンチの巻位置に向かって走行させる表層バンチ形成ガイド１１から成る。
【０００４】
また、下部糸切替機構１２は、糸寄せガイド９と糸道規制ガイド１０の間を走行している糸条を空ボビン１６の周面に接触させ、糸条を空ボビン１６の軸方向に移動させて空ボビン１６に設けた糸条把持部２３に把持させる巻付け用ガイド１３と、前記巻付け用ガイド１３を待機位置と巻付け位置に動作させるアーム１３´により構成されている。
【０００５】
上述のような巻取り機で、糸条を巻上がりパッケージ１７から空ボビン１６への切替えを行う場合、まずターレット板３が１８０度時計回りに回転して巻取り側にあった巻上がりパッケージ１７が待機側に移動し、さらに、待機側にあった空ボビン１６が巻取り側に移動される。
【０００６】
このとき、図３に見られるように糸道規制機構８（図示せず）の糸道規制ガイド１０はターレット板３（図示せず）の回転と連動し、糸条をトラバースガイド（図示せず）から外し、糸条が空ボビン１６周面に接触しないように糸道を規制し支持する。
【０００７】
次いで、図４のように上部糸切替え機構７の糸寄せガイド９によって糸条が正規のトラバース領域の外に搬送されると、糸道規制機構８の表層バンチ形成ガイド１１が、糸を巻上がりパッケージ１７の糸巻取り層における表層バンチの巻位置に向かって走行させる。
【０００８】
次に、図５に示すように、下部糸切替機構１２（図示せず）の巻付け用ガイド１３が空ボビン１６と、糸道規制機構８の間に移動し、上部糸切替え機構７（図示せず）の糸寄せガイド９と下部糸切替え機構８の表層バンチ形成ガイド１１によって糸道が規制されて走行している糸条が、前記巻付け用ガイド１３により空ボビン１６の周面に当接されると共に、空ボビン１６の軸方向に移動されると、空ボビン１６の端部周方向にある糸条把持部２３に導入され、把持される。前記糸条が把持されると、満巻きパッケージ１７と空ボビン１６がどちらも糸条巻取り方向に回転しているため、巻上がりパッケージ１７と空ボビン１６の間で糸条が切断されて糸条が巻上がりパッケージ１７から空ボビン１６に切替えられる。
【０００９】
そして、図６にあるように糸寄せガイド９によって糸条が空ボビンのテールバンチ巻き位置に向かって走行するように案内されているため、前記糸条は把持部を出て空ボビン１６の周面に移動し、所定の巻き位置にテールバンチが形成される。
【００１０】
次いで、図７のように所定のテールバンチ量を巻き取った後、糸寄せガイド９がボビン反対側の端部に向かって戻るのに従い、糸条はテール糸を形成しつつトラバース中心方向に向かって移動し、トラバースガイド（図示せず）に受け渡され、綾振りされて巻き取られる。
【００１１】
このように、上述したような従来の巻取り方法及び装置でボビンの自動切替を行う場合、糸条が空ボビンに切替え後、トラバース中心方向に向かって移動しようとする力に逆らって糸条をテールバンチ巻き位置上に支持する、上部糸切替え機構７にある糸寄せガイド９により、空ボビン１６に把持された糸条は、糸寄せガイド９の真下に巻取られ、必ずテールバンチが形成されることとなる。その結果、その形成されたテールバンチ巻きを後の工程で除去しなければならず、この分の作業負担が生じるという問題があった。
【００１２】
このほかに特開昭６２−２８０１７２号公報、および特公昭５７−３６２３３号公報、および特開平６−３２１４２４号公報に記載されているようなターレット型自動巻取り機があげられるが、いずれも糸条が空ボビンに切替後、トラバース中心方向に向かって移動しようとする力に逆らって糸条を支持するため、必ずテールバンチが形成され、上述の場合と同様の問題があった。
【００１３】
一方、このようなテールバンチの形成を行わない巻取装置としては、特開昭５４−１１４６７４号公報にあるようなものが知られている。
【００１４】
しかし、この装置では、空ボビン表面に周方向に延びた糸把持用の溝に糸条を導入する際の糸道は、該糸条把持用の溝に対し斜めになる。その結果、糸条の把持が確実に行われず、糸条の物性や太さの異なるさまざまな品種に対して高い切替成功率を維持するには問題があった。
【００１５】
かかる問題に対し、糸条把持用の溝に糸条を導入する際に空ボビンよりも下流側で糸条を支持する糸止め装置に斜めの溝を設ける方法、あるいは、糸止め装置を設けず、待機側に移った巻上がりパッケージの巻幅が糸条把持用の溝の真下に来るように、待機側のスピンドルをスピンドル軸方向に平行移動する方法が記載されている。これらの方法によれば、糸条把持用の溝に糸条を導入する際の糸道を糸条把持用の溝に対し平行にすることができるものの、糸止め装置に斜めの溝を設ける方法では、斜めの溝の部分で発生する摩擦力が巻取張力を下げるため切替成功率が低下するという問題があり、また、スピンドルを移動させる方法では設備構成が複雑となり設備費が過大になるという問題があった。
【００１６】
更に、たとえ前記の方法で糸条把持用の溝に糸条を導入する際の糸道を糸条把持用の溝に対し平行にするようにしても、テール糸がマルチフィラメントの状態でなく、複数の単糸毎にばらけてしまういわゆるテール割れが発生するという問題があった。テール割れは、糸条把持直後糸条が走行方向とは逆方向に逆巻きされることにより単糸毎に張力のずれが生じ、テールバンチがないため、この張力のずれた状態で即座にテール糸を巻き始めるために起こり、テール割れの発生したパッケージではテール糸繋ぎ作業が困難になるという問題がある。
【００１７】
また、このほかに、テールバンチをなくすことで後の工程でのテールバンチ除去作業が不要になるものの、巻上りパッケージの巻終りの端糸が巻上りパッケージ表層から落ちてボビン端部に巻付く現象が依然として残るため、後の工程でこの糸を除去しなければならず、結局、作業負荷が軽減されないという問題があった。
【００１８】
【発明が解決しようとする課題】
本発明の第一の目的は、糸条を糸巻き用ボビンに巻付けるに際し、パッケージの外部で捨て糸となる棒巻であるテールバンチを巻付けず、かつ糸条の物性や太さの異なるさまざまな品種の糸条についても、高い切替成功率を維持し、これらにより、後の工程ではテールバンチの除去作業を不要とし、かつ巻取りの工程も安定させることができる合成繊維の巻き取り方法を提供せんとするものである。
【００１９】
本発明の第二の目的は、第一の目的に加え、テール糸が単糸毎にばらけてしまうテール割れがなく、かつ、さまざまな品種の糸条や使用条件に応じた、テール糸繋ぎ作業に適正な長さのテール糸を安定的かつ容易に形成することができる合成繊維の巻き取り方法を提供せんとするものである。これによりパッケージ使用の際（織り・糸加工等）のテール糸繋ぎ作業を効率的に行うことができるようになるのであり、本発明の目的は、そのようなテール糸繋ぎ作業を効率的に行うことのできる合成繊維の巻き取り方法を提供せんとするものである。
【００２０】
本発明の第三の目的は、巻上りパッケージの巻終りの端糸が巻上りパッケージの表層から落ちにくい巻上がりパッケージとして巻き取ることを可能にする合成繊維の巻き取り方法を提供せんとするものである。これにより後の工程で表層から落ちてボビン端部に巻き付いた端糸の除去作業を軽減することのできる合成繊維の巻き取り方法を提供せんとするものである。
【００２１】
【課題を解決するための手段】
かかる課題を解決するため、本発明の糸条の巻取り方法は、主として次の構成を有する。すなわち、空ボビンへ糸条を巻付けるに際し、糸条を巻取るときの綾振り支点ガイドと、糸を巻取る前で左右に綾振りをするトラバース装置と、巻き取られた糸条に当接して所定の面圧を付与する接圧ロ−ラーと、綾振られて送り出されてくる糸条を交互に巻取る２本のスピンドルと、巻取り側スピンドルから、待機側のスピンドルに連続して糸条を切り替えるためにスピンドル位置を移動させる移動装置と、糸条を把持する糸条把持部に糸条を導入する糸切替装置とからなり、更に、該糸切替装置が、前記巻取り側スピンドルに装着された空ボビンに対し上流側に設けられた上部糸切替機構と、下流側に設けられた下部糸切替機構と、待機側に移った巻上がりパッケージにいたる糸条の糸道を規制する糸道規制機構とから構成され、かつ、前記上部糸切替機構が、糸条を正規のトラバース幅の範囲外へ糸寄せし、糸条を他のガイドに預けた後もとの位置に戻る糸寄せガイドと、糸寄せした糸条を預ける糸預けガイドとを備え、前記下部糸切替機構が、前記上部糸切替機構と前記糸道規制機構に規制された糸条を空ボビンの周面に接触させ、空ボビン軸方向に移動させて糸条把持部に糸条を把持させる巻付け用ガイドを備えた糸条巻取装置を用い、糸条を正規のトラバース領域の外に移動し糸条を前記上部糸切替機構と前記下部糸切替機構により糸条把持部に略平行に規制し、前記上部糸切替え機構と前記下部糸切替え機構の少なくとも一方で前記糸条把持部に移動させ、糸条が前記糸条把持部に把持切断されると共に、糸条の把持点が糸条の走行方向とは反対である空ボビンの回転方向に移行し、前記上部糸切替え機構から自動的に糸条が外れ、棒巻きであるテールバンチを形成することなくトラバース中心方向に糸条が移動し、トラバースガイドと係合した時点から正規の巻取りを開始する合成繊維の巻取り方法である。
【００２２】
また、本発明の糸条の巻取り装置は、主として次の構成を有する。すなわち、糸条を巻取るときの綾振り支点ガイドと、糸を巻取る前で左右に綾振りをするトラバース装置と、巻き取られた糸条に当接して所定の面圧を付与する接圧ロ−ラーと、綾振られて送り出されてくる糸条を交互に巻取る２本のスピンドルと、巻取り側スピンドルから、待機側のスピンドルに連続して糸条を切り替えるためにスピンドル位置を移動させる移動装置と、糸条を把持する糸条把持部に糸条を導入する糸切替装置とからなり、更に、該糸切替装置が、前記巻取り側スピンドルに装着された空ボビンに対し上流側に設けられた上部糸切替機構と、下流側に設けられた下部糸切替機構と、待機側に移った巻上がりパッケージにいたる糸条の糸道を規制する糸道規制機構とから構成され、かつ、前記上部糸切替機構が、糸条を正規のトラバース幅の範囲外へ糸寄せし、糸条を他のガイドに預けた後もとの位置に戻る糸寄せガイドと、糸寄せした糸条を預ける糸預けガイドとを備え、前記下部糸切替機構が、前記上部糸切替機構と前記糸道規制機構に規制された糸条を空ボビンの周面に接触させ、空ボビン軸方向に移動させて糸条把持部に糸条を把持させる巻付け用ガイドを備えた糸条巻取装置であり、前記空ボビンへ糸条を巻付けるに際し、糸条を正規のトラバース領域の外に移動し糸条を前記上部糸切替機構と前記下部糸切替機構により糸条把持部に略平行に規制し、前記上部糸切替機構と前記下部糸切替機構の少なくとも一方で前記糸条把持部に移動させ、糸条が前記糸条把持部に把持切断されると共に、糸条の把持点が糸条の走行方向とは反対である空ボビンの回転方向に移行し、前記上部糸切替え機構から自動的に糸条が外れ、棒巻きであるテールバンチを形成することなくトラバース中心方向に糸条が移動し、トラバースガイドと係合した時点から正規の巻取りを開始する合成繊維の巻取り装置である。
【００２３】
【発明の実施の形態】
以下、本発明の実施態様を図１２〜２０を用いて説明する。
図１２〜図１６は巻上がりパッケージから空ボビンへの自動切替え時の動作を時系列的に表した概略図であり、図１７は上部糸切替機構付近の概略正面図である。図１９は本発明の実施態様であるターレット型の多糸条巻取り装置の概略正面図、図２０は概略側面図である。まずターレット板３が１８０度時計回りに回転して巻取り側にあった巻上がりパッケージ１７が待機側に、待機側にあった空ボビン１６が巻取り側に移動される。このとき図１２に見られるように糸道規制機構８の糸道規制ガイド１０はターレット板３（図示せず）と連動し、糸条をトラバースガイド（図示せず）から綾振り方向と直交する方向に外し、糸条が空ボビン１６周面に接触しないように糸道を規制し支持する。
【００２４】
次いで、図１３のように上部糸切替え機構７の糸寄せガイド９によって糸条が正規のトラバース幅の外に搬送されると、糸道規制機構８の表層バンチ形成ガイド１１が糸道を巻上がりパッケージ１７の糸巻取り層における表層バンチの巻位置に向かって走行させる。
【００２５】
次に、図１４に示すように、糸寄せガイド９は元の位置に戻り、そのとき糸条は上部糸切替え機構７に設けられた、糸預けガイド１５に受け渡され、空ボビン１６の表面に周方向に延びる糸条把持部２３上方で支えられる。
【００２６】
次いで、図１５に示すように、下部糸切替機構１２（図示せず）の巻付け用ガイド１３が、空ボビン１６と糸道規制機構８の間に移動し、糸預けガイド１５と糸道規制機構８の表層バンチ形成ガイド１１によって糸道が規制されて走行している糸条が、前記巻付け用ガイド１３により空ボビン１６の周面に当接されると共に、空ボビン１６の軸方向に移動されると、糸道が空ボビン１６の糸条把持部２３に対し略平行に導入され把持される。前記糸条が把持されると、巻上がりパッケージ１７と空ボビン１６がどちらも糸条巻取り方向に回転しているため、巻上がりパッケージ１７と空ボビン１６の間で糸条が引っ張られ、切断されて糸条が巻上がりパッケージ１７から空ボビン１６に切替えられる。
【００２７】
この直後、切り替わった糸条は糸預けガイド１５から速やかに外れ、トラバース中心方向に移動を開始する。このように糸が自動的に糸預けガイド１５から外れるのは、図１７に示すように、糸預けガイド１５が糸切替直後の巻取機で巻取られる糸条の糸道Ｂ（破線）を横切らない位置でかつ切替直前の糸条の糸道Ｃを横切る位置に設置されているためである。
【００２８】
次に、図１６に示すように、トラバース中心方向に移動する糸条は、糸条把持部２３とトラバース領域の間に設けた抵抗ガイド１８に接触し、トラバース中心とは反対側の方向へ摩擦力を受けて移動速度を落とし、この間に所定の糸長のテール糸を形成しつつトラバース中心に向かって移動を続け、ついにはトラバースガイド（図示せず）に受け渡され、綾振りされて巻き取られる。
【００２９】
なお、本発明の実施にあたっては、特に、ターレット型自動巻取装置を使用するのがよく、さらには高速巻取りに適用するのがよい。
また、糸道規制ガイド１０は、ターレット盤３と連動せず単独の駆動機構により動作してもよいし、糸条をトラバースガイドから綾振り方向と直交する方向に外す方法については接圧ローラー６の上流に設けた糸外しガイドによってもよい。
【００３０】
また、糸条を空ボビン軸方向に移動させ糸条把持部に導入する手段としては、上部糸切替機構７と下部糸切替機構８双方にその手段を設けてもよい。
【００３１】
また、糸条を把持させる手段としては、図８のような空ボビンの管端部表面に周方向に延びる糸把持用スリット溝２３を設けた糸巻き用ボビンによるのが好ましく、隣接する糸巻き用ボビンとの境を用いて糸把持してもよく、糸巻き用ボビンの間に挿入された管状部材と、糸巻き用ボビン端部との境を用いて糸把持するなど把持できるものがあればいずれであってもよい。
【００３２】
また、テール糸の糸長を制御する手段としては、上述のようなひとつの抵抗ガイドだけによらず、図９のように複数の抵抗ガイド１８を組み合わせて使用してもよく、抵抗ガイドのうちの一つが、図１０のように回転羽根機構によるトラバース装置を構成する、綾振りの糸道に対し該回転羽根とは反対の位置に設けられたトラバース規制ガイド２１であってもよいし、抵抗ガイドのうちの一つが、切替時に糸条をトラバースガイドから綾振り方向と直交する方向に外す糸外しガイドであってもよい。更に、テール糸の糸長を制御する手段として、回転するスクリュー状の溝を用いてもよく、図１１のようにスクリュー状の溝２４を接圧ローラー６に加工してもよい。
【００３３】
また、糸条の物性や太さ等の品種条件の違いや、テール糸繋ぎを行う作業環境の違い等によりテール糸の糸長を微調整する必要が生じる場合、そのテール糸の糸長の微調整方法としては、抵抗ガイドの位置を調節移動することにより抵抗ガイドの摩擦力を変化させる方法が好ましく、更に好ましくは、２つの抵抗ガイドを糸条を挟む位置に設け、糸条走行方向の２つのガイド間の距離を変えることにより抵抗ガイドの摩擦力を変化させる方法がよく、また、抵抗ガイドを設置したうえで綾振り支点ガイドの位置を調節することにより抵抗ガイドの摩擦力を変化させる方法も好ましい。
【００３４】
また、テール割れを防止する方法としては、図１８のように糸条把持部に糸条が把持された直後に糸条が糸預けガイドから外れる位置を、スピンドル軸に直交する方向から見て糸条把持部より反綾振り側にずれた位置（例えばＡ点）にするのが好ましく、更にテール割れ防止と切替成功率の維持の双方の目的から、ボビン外径をＲ、糸条把持部に糸条が把持された直後に糸条が糸預けガイドから外れる部分の位置と糸条把持部とのスピンドル軸方向の距離をｄ（図１８に図示）としたとき、距離ｄを０．００７Ｒ≦ｄ≦０．０７Ｒの範囲とするのがより好ましい。また、ここで言う糸条把持部に糸条が把持された直後に糸条が糸預けガイドから外れる部分というのは、糸条を空ボビン軸方向に移動させ糸条把持部に導入する手段が上部糸切替機構にある場合において、糸条が糸条把持部に把持された直後に糸条が上部糸切替機構から外れる部分を含むものとする。
【００３５】
また、巻き上りパッケージの巻終りの端糸が巻上りパッケージ表層から落ちることを防止するためには、巻上がりパッケージの表層に巻かれる表層バンチの巻き位置を、スピンドル軸に直交する方向から見てパッケージ表層端面から少なくとも５ｍｍ以上内側とするのが好ましく、１０ｍｍ以上内側とするのが更に好ましく、更に２０ｍｍ以上内側としたとき顕著な効果を発揮する。
【００３６】
表層バンチの巻き位置を巻上がりパッケージ端面から少なくとも５ｍｍ以上内側に形成させる手段としては、表層バンチ形成ガイド１１の糸条を支持する位置を巻上がりパッケージ端面から少なくとも５ｍｍ以上内側の位置へ取り付けるのがよい。
【００３７】
【実施例】
以下、実施例により、本発明を具体的に説明する。
ナイロン６糸条を溶融紡糸し、巻取り速度が３０００ｍ／分で巻取る工程に供した。
巻取りには、スピンドル１本にボビン径１４０ｍｍの糸把持用スリット溝を設けた糸巻き用紙管８本を装着し、そのスピンドル２軸を装備した東レエンジニアリング（株）製ターレット型巻取機、ＫＷ−６６Ａを使用し、１個あたりのパッケージ重量が７．５ｋｇ巻き(直径が３５０ｍｍ)になるごとに自動糸切替えし、以下に記載する内容の評価１、評価２、評価３、評価４のそれぞれについて、評価を行った。
【００３８】
すなわち、評価１にては、切替成功率と満巻に巻き上がったパッケージのテール割れの状態を調査した。
すなわち、評価２にては、満巻に巻き上がったパッケージの糸把持部周辺に形成されたテール糸の糸長を調査した。
すなわち、評価３にては、テール糸の糸長の調整機能について評価した。
すなわち、評価４にては、満巻に巻き上がったパッケージの表層に形成された表層バンチ位置と、糸条パッケージの巻終わりの端糸の、パッケージ表層からの糸落ちの状態を調査した。
【００３９】
「評価１」
まず、切替成功率と満巻に巻き上がったパッケージのテール割れの状態を調査した。５０デニール、４０フィラメントの糸条を巻取る工程において、糸を預ける部分の形状が直線であり、かつ該直線部がスピンドル軸に対し直角な糸預けガイドを用い、該直線部をスピンドル軸に直交する方向からみて、紙管端部表面に周方向に延びる糸条把持部に対し１ｍｍ反綾振り側にしたもの(実施例１)、糸条把持部より５ｍｍ反綾振り側にしたもの(実施例２)、糸条把持部より９ｍｍ反綾振り側にしたもの(実施例３)、１ｍｍ綾振り側にしたもの（実施例４）、糸条把持部の真上にしたもの（実施例５）、糸条把持部より１２ｍｍ反綾振り側にしたもの(実施例６)について自動切替を行い評価した。満巻に巻き上がった糸条パッケージの切替成功率とテール割れの発生状態の評価結果を表１に併せて示す。
実施例１〜３においては、切替成功率１００％で自動切替することができ、糸割れの発生はなかった。また、実施例４、５においては、１００％の切替成功率でテール割れが多少発生した。実施例６においては、切替成功率は９５．０％でテール割れの発生はなかった。
【００４０】
【表１】

【００４１】
「評価２」
次に、満巻に巻き上がったパッケージの糸把持部周辺に形成されたテール糸の糸長の評価を、５０デニール、４０フィラメント糸条を用い、テール糸の糸長を制御する手段が図２１−１（正面図）、図２１−２（側面図）のような一つの抵抗ガイド（図２１−３）による場合（実施例７）、図２２−１（正面図）、図２２−２（側面図）に示したような寸法の２つの抵抗ガイド（図２２−３、図２２−４）の組合せによる場合（実施例８）、図１１のような接圧ローラーに加工したスクリューによる場合（実施例９）、テール糸の糸長を制御する手段を設けない場合（実施例１０）について行った。その結果が表２であり、実施例７から９においてはテール糸の糸長が８０〜１００ｃｍとテール移行作業をするのに十分かつ適正な長さであった。一方、実施例１０においてもテール糸長が２５ｃｍであった。
【００４２】
【表２】

【００４３】
「評価３」
次に、５０デニール、１７フィラメント糸条を用い、テール糸の糸長の微調整機能について評価を行った。すなわち、前記実施例７の抵抗ガイドを糸条走行方向に対し接圧ローラーに近づく方向（＋）と離れる方向（−）に４ｍｍ移動した場合（実施例１１）、前記実施例８の２つの抵抗ガイドのうち上の一つの抵抗ガイドを糸条走行方向に対し接圧ローラーに近づく方向（＋）と離れる方向（−）に４ｍｍ移動した場合（実施例１２）、前記実施例８の抵抗ガイドのうち上の一つの抵抗ガイドを図２２−１に示すガイドを固定する前板２５に対し離れる方向（＋）と近づく方向（−）に０．５ｍｍ移動した場合（実施例１３）、前記実施例８の条件で振支点ガイドの位置を糸条把持部方向（＋）と反糸条把持部方向（−）に６ｍｍ移動した場合（実施例１４）についてテール糸の糸長を測定し、基準である実施例７または８の場合(移動量０ｍｍ）と比較した。
その結果が、図２３であり、グラフは横軸が移動量、縦軸がテール糸の糸長である。実施例１１から１４の全ての場合でテール糸の糸長を変化させ、微調整できることがわかる。
【００４４】
「評価４」
次に、満巻に巻き上がったパッケージの表層に形成された表層バンチ位置と、糸条パッケージの巻終わりの端糸の、パッケージ表層からの糸落ち状態を３０デニール、１０フィラメント糸条を用い調査した。表層に形成させる表層バンチの巻位置を巻上がりパッケージ端面から５ｍｍにしたもの(実施例１５)、１０ｍｍにしたもの(実施例１６)、２０ｍｍにしたもの(実施例１７)で評価を行った。比較として、表層に形成させる表層バンチの巻位置を巻上がりパッケージ端面から１ｍｍにしたもの（実施例１８）、３ｍｍにしたもの（実施例１９）、４ｍｍにしたもの(実施例２０)で評価を行った。このように自動切替えし、満巻に巻き上がった糸条パッケージの巻終わりの端糸のパッケージ表層からの糸落ち状態の評価結果を表３に併せて示す。
【００４５】
【表３】

実施例１５から１７においては、満巻に巻き上がった糸条パッケージの巻終わりの端糸がパッケージ表層から糸落ちしたものは６．３％以下であり、実施例１７では、糸落ちは０．０％であった。また、実施例１８から２０においては、満巻に巻き上がった糸条パッケージの巻終わりの端糸がパッケージ表層から糸落ちしたものは、３７．５％（実施例１８）、２２．５％（実施例１９）、１３．８％（実施例２０）と、糸落ちが若干高いレベルであった。
【００４６】
【発明の効果】
本発明の合成繊維の巻取り方法及び装置によると、糸条をボビンに巻付けるに際し、テールバンチを巻付けず、かつ糸条の太さや油剤などが異なる品種について、高い切替成功率を維持し、テール糸の単糸ばらけの抑制や適正なテール長を安定的かつ容易に形成することである。これにより、テールバンチの除去作業を不要とし、かつ巻取り工程も安定できる。
【図面の簡単な説明】
【図１】従来の技術の多糸条型糸条巻取り装置の概略正面図。
【図２】従来の技術の多糸条型糸条巻取り装置の概略側面図。
【図３】従来の技術の糸条切替え動作を示す１糸条のみの概略図。
【図４】従来の技術の糸条切替え動作を示す１糸条のみの概略図。
【図５】従来の技術の糸条切替え動作を示す１糸条のみの概略図。
【図６】従来の技術の糸条切替え動作を示す１糸条のみの概略図。
【図７】従来の技術の糸条切替え動作を示す１糸条のみの概略図。
【図８】糸把持用スリット溝を設けたボビンの概略図。
【図９】テール糸長を制御する手段が複数の抵抗ガイドを組み合わせたものの概略図。
【図１０】抵抗ガイドのうちの一つが、トラバース規制ガイドであるものの概略図。
【図１１】接圧ローラーにスクリュー状の溝を加工したものの概略図。
【図１２】本発明の糸条巻取り装置の糸条切替え動作を表す概略図。
【図１３】本発明の糸条巻取り装置の糸条切替え動作を表す概略図。
【図１４】本発明の糸条巻取り装置の糸条切替え動作を表す概略図。
【図１５】本発明の糸条巻取り装置の糸条切替え動作を表す概略図。
【図１６】本発明の糸条巻取り装置の糸条切替え動作を表す概略図。
【図１７】本発明の糸条巻取り装置の上部糸切替機構周りの位置関係を表す正面概略図。
【図１８】本発明の糸条巻取り装置の上部糸切替機構周りの位置関係を表す側面概略図。
【図１９】本発明の糸条巻取り装置の概略正面図。
【図２０】本発明の糸条巻取り装置の概略側面図。
【図２１】テール糸長を制御する手段に一つの抵抗ガイドを設けた場合を説明する図であり、図２１−１は正面図、図２１−２は側面図。
【図２２】２つの抵抗ガイドを設けた場合を説明する図であり、図２２−１は正面図、図２２−２は側面図。
【図２３】テール糸の糸長の微調整機能を評価した実施例を示したグラフ。
【符号の説明】
１糸条巻取り装置
３ターレット板
４スピンドル
５トラバース装置
６接圧ローラー
７上部糸切替え機構
８下部糸切替え機構
９糸寄せガイド
１０糸道規制ガイド
１１表層バンチ形成ガイド
１２糸巻付け機構
１３巻付け用ガイド
１５糸預けガイド
１６空ボビン
１７巻上がりパッケージ
１８抵抗ガイド
２０綾振り支点ガイド[0001]
BACKGROUND OF THE INVENTION
The present invention is suitable for a step of winding a yarn. In particular, the present invention relates to a synthetic fiber winding method and apparatus that are particularly effective in a winder that is wound at high speed and automatically switches in a synthetic fiber manufacturing process. Specifically, when the yarn is wound around the bobbin for winding the thread, the tail bunch that becomes a discarded yarn wound in a rod shape is not wound outside the yarn package, thereby eliminating the need to remove the tail bunch and high Regarding the technology for maintaining the switching success rate, the technology that forms the tail yarn (transfer tail) with no tail cracking and an appropriate yarn length, and the yarn end at the end of the winding of the winding package are attached to the technology. The present invention relates to a technique for preventing falling from the surface of the upstream package.
[0002]
[Prior art]
A general winder having an automatic switching mechanism for a bobbin for bobbin winding will be described with reference to FIGS.
[0003]
FIG. 1 is a schematic front view of a multi-thread winder, and FIG. 2 is a schematic side view of the multi-thread winder. FIG. 3 to FIG. 7 are schematic diagrams showing the operation at the time of automatic switching from a rolled-up package to an empty bobbin in a time series for one yarn. The winding device 1 includes a turret plate 3 rotatably attached to the machine frame, two spindles 4 rotatably attached to the turret plate 3, a traverse device 5 installed above the spindle 4, A bobbin 16 for winding a thread mounted on the spindle 4 or a contact roller 6 for applying a predetermined surface pressure by contacting a thread wound on the bobbin, and an upper thread provided above the contact roller 6 In order to restrict the yarn path when switching the yarn from the bobbin 17 to the empty bobbin 16 with the switching mechanism 7, the yarn path regulating mechanism 8 provided at a position between the two spindles 4, and the yarn In order to wind around the empty bobbin 16, the lower bobbin 16 and the lower thread switching mechanism 12 provided between the yarn path regulating mechanism 8 are constituted. The above-described upper yarn switching mechanism 7 operates in the traverse direction of the traverse guide, moves the yarn out of the normal traverse region, and guides the yarn to the tail bunch winding position and the tail winding position. 9 and these drive sources (not shown), and the yarn path regulating mechanism 8 prevents the yarn from coming into contact with the peripheral surface of the empty bobbin when the empty bobbin 16 on the standby side moves to the winding side. A yarn path regulation guide 10 that regulates and supports the yarn path, and a surface layer bunch formation guide 11 that travels the yarn path toward the winding position of the surface layer bunch on the yarn winding surface layer of the fully wound package 17.
[0004]
Further, the lower yarn switching mechanism 12 brings the yarn running between the yarn guide 9 and the yarn path regulating guide 10 into contact with the peripheral surface of the empty bobbin 16 and moves the yarn in the axial direction of the empty bobbin 16. The winding guide 13 is gripped by the yarn gripping portion 23 provided on the empty bobbin 16, and the arm 13 'moves the winding guide 13 to the standby position and the winding position.
[0005]
When switching the yarn from the package 17 to the empty bobbin 16 with the winding machine as described above, first the turret plate 3 is rotated 180 degrees clockwise and the winding package 17 on the winding side is firstly rotated. Moves to the standby side, and the empty bobbin 16 that was on the standby side is moved to the winding side.
[0006]
At this time, as shown in FIG. 3, the yarn path regulating guide 10 of the yarn path regulating mechanism 8 (not shown) is interlocked with the rotation of the turret plate 3 (not shown), and the yarn is traversed by a traverse guide (not shown). ), And regulate and support the yarn path so that the yarn does not contact the peripheral surface of the empty bobbin 16.
[0007]
Next, as shown in FIG. 4, when the yarn is conveyed outside the normal traverse region by the yarn guide 9 of the upper yarn switching mechanism 7, the surface layer bunch forming guide 11 of the yarn path regulating mechanism 8 winds up the yarn. It is made to travel toward the winding position of the surface layer bunch in the yarn winding layer of the package 17.
[0008]
Next, as shown in FIG. 5, the winding guide 13 of the lower thread switching mechanism 12 (not shown) moves between the empty bobbin 16 and the yarn path regulating mechanism 8, and the upper thread switching mechanism 7 (see FIG. 5). (Not shown) and the yarn running while the yarn path is regulated by the surface yarn bunch forming guide 11 of the lower yarn switching mechanism 8 is applied to the peripheral surface of the empty bobbin 16 by the winding guide 13. When they are in contact with each other and moved in the axial direction of the empty bobbin 16, they are introduced into and held by the yarn gripping portion 23 in the circumferential direction of the end of the empty bobbin 16. When the yarn is gripped, both the full-winding package 17 and the empty bobbin 16 are rotated in the yarn winding direction, so that the yarn is cut between the winding package 17 and the empty bobbin 16 and the yarn. The strip is rolled up and switched from the package 17 to the empty bobbin 16.
[0009]
Then, as shown in FIG. 6, the yarn guide 9 guides the yarn so that it travels toward the tail bunch winding position of the empty bobbin. The tail bunch is formed at a predetermined winding position.
[0010]
Next, after winding a predetermined amount of tail bunch as shown in FIG. 7, as the yarn guide 9 returns toward the end on the opposite side of the bobbin, the yarn forms a tail yarn toward the traverse center. It is moved, passed to a traverse guide (not shown), traversed and wound up.
[0011]
As described above, when the bobbin is automatically switched by the conventional winding method and apparatus as described above, after the thread is switched to the empty bobbin, the thread is moved against the force to move toward the traverse center. The yarn gripped by the empty bobbin 16 by the yarn guide 9 in the upper yarn switching mechanism 7 supported on the tail bunch winding position is wound directly under the yarn guide 9 so that a tail bunch is always formed. It becomes. As a result, there is a problem that the formed tail bunch winding must be removed in a later step, and this burden of work is generated.
[0012]
In addition, there are turret type automatic winders as described in JP-A-62-280172, JP-B-57-36233, and JP-A-6-321424. After the line is switched to the empty bobbin, the yarn is supported against the force to move toward the center of the traverse, so that the tail bunch is always formed, and there is a problem similar to that described above.
[0013]
On the other hand, as a winding device which does not form such a tail bunch, there is known one disclosed in Japanese Patent Application Laid-Open No. 54-114674.
[0014]
However, in this apparatus, the yarn path when the yarn is introduced into the thread gripping groove extending in the circumferential direction on the surface of the empty bobbin is inclined with respect to the thread gripping groove. As a result, the yarn is not reliably gripped, and there is a problem in maintaining a high switching success rate for various varieties having different physical properties and thicknesses.
[0015]
For this problem, when introducing the yarn into the yarn gripping groove, a method of providing an oblique groove in the yarn fixing device that supports the yarn downstream of the empty bobbin, or no yarn fixing device is provided. A method is described in which the stand-by-side spindle is translated in the spindle axial direction so that the winding width of the rolled-up package moved to the stand-by side is directly below the yarn gripping groove. According to these methods, although the yarn path for introducing the yarn into the yarn gripping groove can be made parallel to the yarn gripping groove, a slant groove is provided in the yarn fixing device. Then, there is a problem that the success rate of switching is lowered because the frictional force generated in the oblique groove portion lowers the winding tension, and the method of moving the spindle makes the equipment configuration complicated and the equipment cost excessive. There was a problem.
[0016]
Furthermore, even if the yarn path when introducing the yarn into the yarn gripping groove by the above method is parallel to the yarn gripping groove, the tail yarn is not in a multifilament state, There has been a problem that a so-called tail crack occurs in which a plurality of single yarns are scattered. Tail cracking occurs when the yarn is wound in the direction opposite to the running direction immediately after gripping the yarn, causing a tension shift for each single yarn, and there is no tail bunch. There is a problem that the tail thread joining operation becomes difficult in a package in which tail cracking occurs because winding starts.
[0017]
In addition to this, although the tail bunch removal work in the subsequent process becomes unnecessary by eliminating the tail bunch, the end yarn at the end of winding of the winding package falls off the surface of the winding package and winds around the end of the bobbin. Since it still remains, this thread has to be removed in a later process, and there is a problem that the work load is not reduced after all.
[0018]
[Problems to be solved by the invention]
The first object of the present invention is to wind a yarn around a bobbin for winding, without winding a tail bunch, which is a rod wound as a discarded yarn outside the package, and various physical properties and thicknesses of the yarn are different. We do not provide a method for winding synthetic fibers that maintains a high success rate of switching for the yarns of the varieties, which eliminates the need for tail bunch removal work in the subsequent process and stabilizes the winding process. It is what.
[0019]
The second object of the present invention is that, in addition to the first object, there is no tail cracking in which tail yarns are scattered for each single yarn, and tail yarn joining is performed in accordance with various types of yarns and usage conditions. It is an object of the present invention to provide a synthetic fiber winding method capable of stably and easily forming a tail yarn having a length suitable for work. As a result, it is possible to efficiently perform tail yarn joining work when using a package (weaving, yarn processing, etc.), and an object of the present invention is to efficiently perform such tail yarn joining work. It is intended to provide a synthetic fiber winding method that can be used.
[0020]
The third object of the present invention is to provide a synthetic fiber winding method that enables the end yarn at the end of winding of the winding package to be wound as a winding package that does not easily fall off the surface of the winding package. It is. Accordingly, the present invention is intended to provide a synthetic fiber winding method that can reduce the work of removing the end yarn that has fallen from the surface layer and wound around the end of the bobbin in a later step.
[0021]
[Means for Solving the Problems]
In order to solve this problem, the yarn winding method of the present invention mainly has the following configuration. That is, When winding the yarn around the empty bobbin, A traverse fulcrum guide for winding the yarn, a traverse device that traverses left and right before winding the yarn, and a contact pressure roller that abuts the wound yarn and applies a predetermined surface pressure And two spindles that alternately wind the yarn that is traversed and fed, and a movement that moves the spindle position to continuously switch the yarn from the take-up spindle to the stand-by spindle. And a yarn switching device that introduces the yarn into a yarn gripping portion that grips the yarn, and the yarn switching device is provided upstream of the empty bobbin mounted on the take-up spindle. Upper thread trimmer Spare machine And lower thread trimmer on the downstream side Spare machine And the yarn path of the yarn leading to the rolled-up package moved to the standby side Thread From road regulation mechanism The upper yarn switching mechanism is configured so that the yarn is moved out of the range of the normal traverse width and the yarn is moved to another guide after being returned to the original position; A yarn depositing guide for depositing the yarn, wherein the lower yarn switching mechanism makes the yarn regulated by the upper yarn switching mechanism and the yarn path regulating mechanism contact the peripheral surface of the empty bobbin, With a winding guide that allows the thread gripping part to grip the thread Using a yarn winding device , The yarn is moved out of the normal traverse region, and the yarn is regulated substantially parallel to the yarn gripping portion by the upper yarn switching mechanism and the lower yarn switching mechanism, and the upper yarn switching mechanism and the lower yarn switching mechanism At least one side is moved to the yarn gripping portion, and the yarn is gripped and cut by the yarn gripping portion, and the yarn gripping point is shifted to the rotation direction of the empty bobbin opposite to the yarn traveling direction. Shi The upper thread switching mechanism automatically disengages from the upper thread, and the thread moves toward the traverse center without forming a tail bunch that is wound by a rod, and starts normal winding from the point of engagement with the traverse guide. This is a method for winding synthetic fibers.
[0022]
The yarn winding device of the present invention mainly has the following configuration. That is, a traverse fulcrum guide when winding the yarn, a traverse device that traverses left and right before winding the yarn, and a contact pressure that abuts the wound yarn and applies a predetermined surface pressure Moves the spindle position to continuously switch the yarn from the roller, the two spindles that alternately take up the yarn that has been traversed and the winding spindle to the standby spindle. And a yarn switching device that introduces the yarn into the yarn gripping portion that grips the yarn, and further, the yarn switching device is upstream of the empty bobbin mounted on the winding-side spindle. Upper thread trimmer provided on Spare machine And lower thread trimmer on the downstream side Spare machine And the yarn path of the yarn leading to the rolled-up package moved to the standby side Thread From road regulation mechanism The upper yarn switching mechanism is configured so that the yarn is moved out of the range of the normal traverse width and the yarn is moved to another guide after being returned to the original position; A yarn depositing guide for depositing the yarn, wherein the lower yarn switching mechanism makes the yarn regulated by the upper yarn switching mechanism and the yarn path regulating mechanism contact the peripheral surface of the empty bobbin, With a winding guide that allows the thread gripping part to grip the thread Yarn winding device And The empty bobby To When winding the yarn, the yarn is moved out of the normal traverse region, and the yarn is regulated substantially parallel to the yarn gripping portion by the upper yarn switching mechanism and the lower yarn switching mechanism, and the upper yarn cutting Spare machine Structure and lower thread trimmer Spare machine The rotating direction of the empty bobbin in which at least one of the structures is moved to the yarn gripping portion, the yarn is gripped and cut by the yarn gripping portion, and the thread gripping point is opposite to the traveling direction of the yarn Migrate to And Synthesizing that the yarn is automatically removed from the upper yarn switching mechanism, the yarn moves toward the traverse center without forming a tail bunch that is a rod winding, and normal winding is started from the point of engagement with the traverse guide. This is a fiber winding device.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
12 to 16 are schematic views showing the operation at the time of automatic switching from the wound package to the empty bobbin in time series, and FIG. 17 is a schematic front view of the vicinity of the upper thread switching mechanism. FIG. 19 is a schematic front view of a turret type multi-thread winding device according to an embodiment of the present invention, and FIG. 20 is a schematic side view. First, the turret plate 3 is rotated 180 degrees clockwise to move the rolled-up package 17 on the winding side to the standby side and the empty bobbin 16 on the standby side to the winding side. At this time, as shown in FIG. 12, the yarn path regulating guide 10 of the yarn path regulating mechanism 8 is interlocked with the turret plate 3 (not shown), and the yarn is orthogonal to the traverse direction from the traverse guide (not shown). The yarn path is regulated and supported so that the yarn does not contact the peripheral surface of the empty bobbin 16.
[0024]
Next, as shown in FIG. 13, when the yarn is conveyed outside the normal traverse width by the yarn guide 9 of the upper yarn switching mechanism 7, the surface bunch forming guide 11 of the yarn path regulating mechanism 8 winds up the yarn path. It is made to travel toward the winding position of the surface layer bunch in the yarn winding layer of the package 17.
[0025]
Next, as shown in FIG. 14, the yarn shifting guide 9 returns to the original position. At that time, the yarn is transferred to the yarn depositing guide 15 provided in the upper yarn switching mechanism 7, and the surface of the empty bobbin 16. Is supported above the yarn gripping portion 23 extending in the circumferential direction.
[0026]
Next, as shown in FIG. 15, the winding guide 13 of the lower yarn switching mechanism 12 (not shown) moves between the empty bobbin 16 and the yarn path regulating mechanism 8, and the yarn deposit guide 15 and the yarn path regulation. The yarn running with its yarn path regulated by the surface layer bunch forming guide 11 of the mechanism 8 is brought into contact with the peripheral surface of the empty bobbin 16 by the winding guide 13, and in the axial direction of the empty bobbin 16. When moved, the yarn path is introduced and held substantially parallel to the yarn gripping portion 23 of the empty bobbin 16. When the yarn is gripped, both the winding package 17 and the empty bobbin 16 are rotated in the yarn winding direction, so that the yarn is pulled and cut between the winding package 17 and the empty bobbin 16. The yarn is then rolled up and switched from the package 17 to the empty bobbin 16.
[0027]
Immediately after this, the switched yarn is quickly removed from the yarn deposit guide 15 and starts moving in the direction of the traverse center. As shown in FIG. 17, the yarn is automatically detached from the yarn deposit guide 15 in this way by the yarn path B (broken line) of the yarn where the yarn deposit guide 15 is wound by the winder immediately after the yarn switching. This is because it is installed at a position that does not cross and that crosses the yarn path C of the yarn immediately before switching.
[0028]
Next, as shown in FIG. 16, the yarn moving in the traverse center direction comes into contact with the resistance guide 18 provided between the yarn gripping portion 23 and the traverse region, and friction occurs in the direction opposite to the traverse center. The movement speed is reduced by receiving the force, and while continuing to move toward the center of the traverse while forming a tail yarn of a predetermined yarn length, it is finally delivered to a traverse guide (not shown), traversed and wound. Taken.
[0029]
In carrying out the present invention, it is particularly preferable to use a turret type automatic winding device, and more preferably to high-speed winding.
Further, the yarn path regulating guide 10 may be operated by a single drive mechanism without being interlocked with the turret board 3, or the contact roller 6 for removing the yarn from the traverse guide in a direction perpendicular to the traverse direction. It is also possible to use a thread removal guide provided upstream of the thread.
[0030]
Ma As a means to move the yarn in the axial direction of the empty bobbin and introduce it to the yarn gripping part Is The means may be provided in both the upper thread switching mechanism 7 and the lower thread switching mechanism 8.
[0031]
Further, as a means for gripping the yarn, it is preferable to use a bobbin for thread winding provided with a thread gripping slit groove 23 extending in the circumferential direction on the tube end surface of the empty bobbin as shown in FIG. The thread may be gripped using a boundary between the thread and the tubular member inserted between the bobbin for winding and the end of the bobbin for thread winding. May be.
[0032]
Further, as a means for controlling the yarn length of the tail yarn, a plurality of resistance guides 18 may be used in combination as shown in FIG. One of them may be a traverse regulation guide 21 that constitutes a traverse device by a rotary blade mechanism as shown in FIG. 10 and is provided at a position opposite to the rotary blade with respect to the traverse yarn path, or a resistance. One of the guides may be a yarn removal guide that removes the yarn from the traverse guide in a direction orthogonal to the traverse direction at the time of switching. Further, as a means for controlling the yarn length of the tail yarn, a rotating screw-like groove may be used, and the screw-like groove 24 may be processed into the contact roller 6 as shown in FIG.
[0033]
Also, if it is necessary to fine-tune the tail thread length due to differences in the varieties such as the physical properties and thickness of the yarn, and the working environment where the tail thread is connected, the tail thread length must be finely adjusted. As an adjustment method, a method of changing the frictional force of the resistance guide by adjusting and moving the position of the resistance guide is preferable, and more preferably, two resistance guides are provided at positions sandwiching the yarn, and 2 in the yarn traveling direction. The method of changing the friction force of the resistance guide by changing the distance between the two guides is good, and the method of changing the friction force of the resistance guide by adjusting the position of the traverse fulcrum guide after installing the resistance guide Is also preferable.
[0034]
Further, as a method for preventing tail cracking, as shown in FIG. 18, the position where the yarn is removed from the yarn deposit guide immediately after the yarn is held by the yarn holding portion is viewed from the direction perpendicular to the spindle axis. It is preferable that the position is shifted to the side opposite to the traverse side (for example, point A), and the bobbin outer diameter is set to R and the yarn gripping part for the purpose of preventing tail cracking and maintaining the switching success rate. When the distance in the spindle axis direction between the position of the portion where the yarn is removed from the yarn deposit guide and the yarn gripping portion immediately after the yarn is gripped is d (shown in FIG. 18), the distance d is 0.007R ≦ A range of d ≦ 0.07R is more preferable. In addition, the portion where the yarn is detached from the yarn deposit guide immediately after the yarn is grasped by the yarn grasping portion is referred to as means for moving the yarn in the empty bobbin axial direction and introducing it into the yarn grasping portion. In the case of the upper yarn switching mechanism, the yarn includes a portion where the yarn is detached from the upper yarn switching mechanism immediately after the yarn is held by the yarn holding portion.
[0035]
In order to prevent the end yarn at the end of winding of the winding package from falling from the surface of the winding package, the winding position of the surface bunch wound on the surface of the winding package is viewed from the direction perpendicular to the spindle axis. The inner surface is preferably at least 5 mm or more from the end surface of the package surface, more preferably 10 mm or more, and even more preferably 20 mm or more.
[0036]
As a means for forming the winding position of the surface layer bunch at least 5 mm or more inside from the package end surface, attaching the position of the surface bunch forming guide 11 to support the yarn at least 5 mm or more inside from the package end surface. Good.
[0037]
【Example】
Hereinafter, the present invention will be described specifically by way of examples.
Nylon 6 yarn was melt-spun and subjected to a winding process at a winding speed of 3000 m / min.
For winding, a turret type winding machine manufactured by Toray Engineering Co., Ltd., equipped with two spindles with 8 spindles with a thread holding slit with a bobbin diameter of 140 mm on one spindle, KW -66A is used, and automatic thread switching is performed every time the package weight per package reaches 7.5 kg (diameter is 350 mm), and each of Evaluation 1, Evaluation 2, Evaluation 3, and Evaluation 4 described below Was evaluated.
[0038]
That is, in evaluation 1, the switching success rate and the state of tail cracking of the fully wound package were investigated.
That is, in Evaluation 2, the yarn length of the tail yarn formed around the yarn gripping portion of the fully wound package was investigated.
That is, in the evaluation 3, the tail thread adjusting function was evaluated.
That is, in evaluation 4, the surface layer bunch position formed on the surface layer of the fully wound package and the state of yarn dropping from the package surface layer of the end yarn at the end of winding of the yarn package were investigated.
[0039]
"Evaluation 1"
First, the success rate of switching and the state of tail cracking of the fully wound package were investigated. In the process of winding a yarn of 50 denier and 40 filaments, the shape of the portion for depositing the yarn is a straight line, and the straight portion is perpendicular to the spindle axis, and the straight portion is orthogonal to the spindle axis. 1 mm from the yarn gripping portion extending in the circumferential direction on the surface of the end of the paper tube (Example 1), and 5 mm from the yarn gripping portion (from the yarn gripping portion) Example 2), 9 mm away from the yarn gripping part (Example 3), 1 mm traversing side (Example 4), just above the yarn gripping part (Example 5) ), And an evaluation (Example 6) of the yarn gripping portion on the side opposite to the traverse side by 12 mm (Example 6). Table 1 also shows the evaluation results of the success rate of switching the yarn packages wound up to the full winding and the occurrence of tail cracks.
In Examples 1 to 3, automatic switching was possible with a switching success rate of 100%, and there was no occurrence of yarn cracking. In Examples 4 and 5, some tail cracks occurred with a switching success rate of 100%. In Example 6, the switching success rate was 95.0%, and no tail cracking occurred.
[0040]
[Table 1]

[0041]
"Evaluation 2"
Next, the evaluation of the yarn length of the tail yarn formed around the yarn gripping portion of the fully wound package using 50 denier and 40 filament yarn and means for controlling the yarn length of the tail yarn is shown in FIG. -1 (front view), FIG. 21-2 (side view), one resistance guide (FIG. 21-3) (Example 7), FIG. 22-1 (front view), FIG. 22-2 ( In the case of a combination of two resistance guides (FIGS. 22-3 and 22-4) having dimensions as shown in the side view (Example 8), in the case of a screw processed into a contact pressure roller as shown in FIG. 11 ( Example 9) The case where no means for controlling the yarn length of the tail yarn was provided (Example 10). The results are shown in Table 2. In Examples 7 to 9, the tail yarn length was 80 to 100 cm, which was sufficient and appropriate for the tail transfer operation. On the other hand, in Example 10, the tail yarn length was 25 cm.
[0042]
[Table 2]

[0043]
"Evaluation 3"
Next, the fine adjustment function of the tail yarn length was evaluated using 50 denier and 17 filament yarns. That is, when the resistance guide of Example 7 is moved 4 mm in the direction (+) approaching the contact roller and the direction (−) away from the yarn running direction (Example 11), the two resistances of Example 8 are used. When the upper one of the guides is moved 4 mm in the direction approaching the contact roller (+) and the direction away from the contact roller (−) with respect to the yarn traveling direction (Example 12), the resistance guide of Example 8 is used. When one of the upper resistance guides moves 0.5 mm in the direction (+) away from the front plate 25 for fixing the guide shown in FIG. When the position of the fulcrum point guide is moved 6 mm in the direction of the yarn gripping part (+) and the direction of the anti-yarn gripping part (−) under the condition 8 (Example 14), the thread length of the tail thread is measured and In the case of certain Example 7 or 8 (movement amount 0 mm) Compared with.
The result is shown in FIG. 23. In the graph, the horizontal axis represents the amount of movement and the vertical axis represents the yarn length of the tail yarn. It can be seen that in all cases of Examples 11 to 14, the tail yarn length can be changed and finely adjusted.
[0044]
"Evaluation 4"
Next, the surface bunch position formed on the surface layer of the fully wound package and the thread drop state of the end yarn at the end of winding of the yarn package from the package surface are investigated using 30 denier and 10 filament yarns. did. Evaluation was carried out with a winding position of the surface bunch formed on the surface layer being 5 mm from the end face of the package (Example 15), 10 mm (Example 16), and 20 mm (Example 17). For comparison, evaluation was made with a surface bunch to be formed on the surface layer having a winding position of 1 mm from the package end face (Example 18), 3 mm (Example 19), and 4 mm (Example 20). went. Table 3 also shows the evaluation results of the thread drop state from the package surface layer of the end yarn at the end of winding of the yarn package that has been automatically switched as described above.
[0045]
[Table 3]

In Examples 15 to 17, the end yarn at the end of winding of the full-wound yarn package dropped from the package surface was 6.3% or less, and in Example 17, the yarn drop was 0. 0%. In Examples 18 to 20, 37.5% (Example 18), 22.5% (the end yarn at the end of winding of the fully wound yarn package was dropped from the surface layer of the package) In Example 19), 13.8% (Example 20), the thread drop was a slightly high level.
[0046]
【The invention's effect】
According to the synthetic fiber winding method and apparatus of the present invention, when winding the yarn around the bobbin, the tail bunch is not wound, and for the varieties having different yarn thickness, oil agent, etc., a high switching success rate is maintained, This is to suppress the tail yarn breakage of the tail yarn and to form an appropriate tail length stably and easily. This eliminates the need to remove the tail bunch and stabilizes the winding process.
[Brief description of the drawings]
FIG. 1 is a schematic front view of a conventional multi-thread type yarn winding device.
FIG. 2 is a schematic side view of a conventional multi-thread type yarn winding device.
FIG. 3 is a schematic view of only one yarn showing a conventional yarn changing operation.
FIG. 4 is a schematic view of only one yarn showing a conventional yarn switching operation.
FIG. 5 is a schematic view of only one yarn showing a conventional yarn switching operation.
FIG. 6 is a schematic view of only one yarn showing a conventional yarn switching operation.
FIG. 7 is a schematic view of only one yarn showing a conventional yarn switching operation.
FIG. 8 is a schematic view of a bobbin provided with a thread gripping slit groove.
FIG. 9 is a schematic view of a combination of a plurality of resistance guides as means for controlling the tail yarn length.
FIG. 10 is a schematic view of one of the resistance guides being a traverse regulation guide.
FIG. 11 is a schematic view of a contact roller in which a screw-like groove is processed.
FIG. 12 is a schematic diagram showing a yarn switching operation of the yarn winding device of the present invention.
FIG. 13 is a schematic diagram showing a yarn switching operation of the yarn winding device of the present invention.
FIG. 14 is a schematic diagram showing a yarn switching operation of the yarn winding device of the present invention.
FIG. 15 is a schematic diagram showing a yarn switching operation of the yarn winding device of the present invention.
FIG. 16 is a schematic diagram showing a yarn switching operation of the yarn winding device of the present invention.
FIG. 17 is a schematic front view showing the positional relationship around the upper yarn switching mechanism of the yarn winding device of the present invention.
FIG. 18 is a schematic side view showing the positional relationship around the upper yarn switching mechanism of the yarn winding device of the present invention.
FIG. 19 is a schematic front view of the yarn winding device of the present invention.
FIG. 20 is a schematic side view of the yarn winding device of the present invention.
FIGS. 21A and 21B are diagrams illustrating a case where one resistance guide is provided in the means for controlling the tail yarn length, FIG. 21-1 is a front view, and FIG. 21-2 is a side view.
22A and 22B are diagrams illustrating a case where two resistance guides are provided, FIG. 22A is a front view, and FIG. 22B is a side view.
FIG. 23 is a graph showing an example in which the fine adjustment function of the tail yarn length is evaluated.
[Explanation of symbols]
1 Yarn winding device
3 Turret plate
4 Spindle
5 Traverse device
6 Contacting roller
7 Upper thread switching mechanism
8 Lower thread switching mechanism
9 Thread guide
10 Yarn Path Regulation Guide
11 Surface Bunch Formation Guide
12 Yarn winding mechanism
13 Guide for winding
15 Yarn deposit guide
16 empty bobbins
17 roll-up package
18 Resistance guide
20 Traverse fulcrum guide

Claims

When winding a yarn around an empty bobbin, a traverse fulcrum guide when winding the yarn, a traverse device traversing left and right before winding the yarn, and a predetermined surface in contact with the wound yarn The contact pressure roller for applying pressure, the two spindles for alternately winding the yarn fed out by traversing, and the yarn from the take-up spindle to the standby spindle are continuously switched. A moving device that moves the spindle position and a yarn switching device that introduces the yarn into the yarn gripping portion that grips the yarn, and the yarn switching device is mounted on the winding-side spindle. to regulate the upper thread sWITCHING Organization, which is provided on the upstream side with respect to the empty bobbin, and the lower yarn switching exchange Organization, which is provided on the downstream side, the yarn path of the yarn leading to the take-up package, which was transferred to the waiting side It is composed of a yarn path regulating mechanism, and the upper yarn switching device However, there is a yarn guide that returns the yarn to the original position after the yarn is moved out of the range of the normal traverse width, the yarn is stored in another guide, and a yarn storage guide that stores the yarn that has been transferred. The lower yarn switching mechanism is configured to bring the yarn regulated by the upper yarn switching mechanism and the yarn path regulating mechanism into contact with the peripheral surface of the empty bobbin and move it in the axial direction of the empty bobbin to move the yarn to the yarn gripping portion. There use a yarn winding apparatus having a winding guide which grip the strip, yarn gripping the yarn to move the yarn out of the normal traverse region and the upper yarn switching mechanism by the lower yarn switching mechanism And is moved to the thread gripping part at least one of the upper thread switching mechanism and the lower thread switching mechanism, the thread is gripped and cut by the thread gripping part, and the thread is gripped. The upper part moves in the direction of rotation of the empty bobbin whose point is opposite to the direction of travel of the yarn, The yarn is automatically removed from the switching mechanism, the yarn moves toward the traverse center without forming a tail bunch that is a rod winding, and normal winding starts from the point of engagement with the traverse guide. Synthetic fiber winding method.

From the time when the yarn is gripped by the yarn gripping part and started to be wound on the surface of the bobbin for winding, the length of the tail yarn wound up from the time it moves toward the traverse center and enters the normal traverse region is The synthetic fiber winding method according to claim 1, wherein the synthetic fiber winding method is controlled to be 10 cm or more and 200 cm or less.

The synthetic fiber winding according to claim 1 or 2, wherein when the yarn moves in the traverse center direction, the yarn length of the tail yarn is controlled by a resistance guide that contacts the yarn and gives a frictional resistance. How to take.

When moved out of the normal traverse area yarn, yarn is to regulate the yarn path so as not to contact the empty bobbin circumference, according to any of claims 1 to 3, characterized in that the support Synthetic fiber winding method.

A traverse fulcrum guide when winding the yarn, a traverse device traversing left and right before winding the yarn, and a contact pressure roller that abuts the wound yarn and applies a predetermined surface pressure Two spindles that alternately take up the yarn that is traversed and sent out, and a moving device that moves the spindle position in order to continuously switch the yarn from the take-up spindle to the stand-by spindle. The yarn switching device for introducing the yarn into the yarn gripping portion for gripping the yarn, and the yarn switching device is further provided upstream of the empty bobbin mounted on the winding-side spindle. an upper yarn sWITCHING Organization, is composed of a lower thread sWITCHING Organization provided downstream, and a yarn path regulating mechanism that regulates the yarn path of the yarn leading to the winding up package moved to the standby side, and The upper thread switching mechanism allows the yarn to have a normal traverse width. A yarn gathering guide that returns to the original position after depositing the yarn in another guide and a yarn deposit guide that deposits the yarn that has been gathered, and the lower yarn switching mechanism includes: A winding guide is provided in which the yarn regulated by the upper yarn switching mechanism and the yarn path regulating mechanism is brought into contact with the peripheral surface of the empty bobbin and moved in the axial direction of the empty bobbin so that the yarn grasping portion grasps the yarn. When winding the yarn around the empty bobbin, the yarn is moved out of the normal traverse region, and the yarn is gripped by the upper yarn switching mechanism and the lower yarn switching mechanism. And is moved to the thread gripping part at least one of the upper thread switching mechanism and the lower thread switching mechanism, the thread is gripped and cut by the thread gripping part, and the thread is gripped. The point moves in the direction of rotation of the empty bobbin, which is opposite to the running direction of the yarn, The yarn is automatically removed from the part yarn switching mechanism, and the yarn moves in the direction of the traverse center without forming a tail bunch that is a rod winding, and normal winding is started from the point of engagement with the traverse guide. A synthetic fiber winding device.

When the yarn is gripped by the yarn gripping part and started to be wound on the surface of the bobbin for winding, the length of the tail yarn wound up from the time it moves toward the traverse center and enters the normal traverse region The synthetic fiber winding device according to claim 5, further comprising a control unit configured to control to 10 cm or more and 200 cm or less.

The synthetic fiber winding according to claim 5 or 6 , wherein when the yarn moves in the traverse center direction, the yarn length of the tail yarn is controlled by a resistance guide that comes into contact with the yarn and gives friction resistance. Take-off device.

The said resistance guide is comprised by the combination of at least 2 or more resistance guide, The winding apparatus of the synthetic fiber of Claim 7 characterized by the above-mentioned.

Claim 7 wherein one of the resistance guide, characterized in that the said rotary vane with respect to the yarn path of the traverse constituting the traverse device according rotary vane mechanism is a traverse regulating guide provided in the opposite position Or a synthetic fiber winding device according to 8.

The yarn path regulating mechanism is capable of regulating and supporting the yarn path so that the yarn does not come into contact with the peripheral surface of the empty bobbin when the yarn moves outside the normal traverse region. Item 10. The synthetic fiber winding device according to any one of Items 5 to 9 .