JP4048902B2 - Thread loosening device for spinning machine - Google Patents

Thread loosening device for spinning machine Download PDF

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Publication number
JP4048902B2
JP4048902B2 JP2002293465A JP2002293465A JP4048902B2 JP 4048902 B2 JP4048902 B2 JP 4048902B2 JP 2002293465 A JP2002293465 A JP 2002293465A JP 2002293465 A JP2002293465 A JP 2002293465A JP 4048902 B2 JP4048902 B2 JP 4048902B2
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Prior art keywords
yarn
slack eliminating
roller
slack
spinning machine
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JP2002293465A
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Japanese (ja)
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JP2004124333A (en
Inventor
修 平尾
健治 馬場
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Murata Machinery Ltd
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Murata Machinery Ltd
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Priority to JP2002293465A priority Critical patent/JP4048902B2/en
Priority to EP03021099A priority patent/EP1407995A3/en
Priority to CN 200710096054 priority patent/CN101033566B/en
Priority to CNB031326900A priority patent/CN1333122C/en
Publication of JP2004124333A publication Critical patent/JP2004124333A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00Forwarding filamentary material
    • B65H51/20Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • B65H51/22Reels or cages, e.g. cylindrical, with storing and forwarding surfaces provided by rollers or bars
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01HSPINNING OR TWISTING
    • D01H15/00Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
    • D01H15/002Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing for false-twisting spinning machines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/30Handled filamentary material
    • B65H2701/31Textiles threads or artificial strands of filaments

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、紡績機において、糸を紡績する紡績装置から糸を巻き取る巻取装置までの間の糸の弛みを取るための糸弛み取り装置に関するものである。
【0002】
【従来の技術】
空気式紡績機等の高速紡績機にあっては、糸欠陥箇所を検出したとき、糸欠陥箇所をカッターで切断して除去した後に、紡績装置から次々に送られてくる糸の先端とパッケージに巻き上げられた糸の後端とを糸継ぎするようになっている。この糸継ぎは、両方の糸端を停止した状態で行われるため、紡績装置から次々に送られてくる糸をスラックチューブと呼ばれる吸引管で吸引して糸の弛みを取るようにしている。ところで、最近の紡績速度の高速化に伴い、糸の弛み量が増大し、これにより吸引管が長くなるため、吸引管方式で対応するには限界が生じている。そこで、送られてくる糸を一時的に弛み取りローラに巻き付けて弛み取りすることで糸の弛みを取る糸弛み取り装置が提案されている(例えば、特許文献1参照)。
【0003】
【特許文献1】
特公平4−13272号公報
【0004】
【発明が解決しようとする課題】
しかし、前記糸弛み取り装置は、弛み取りローラにクラッチ機構または戻しピンを進退させる機構を内蔵するために構造が複雑であり、また、弛み取りローラに対する糸の巻き付け若しくは解舒が円滑にされないことがある。そこで、本発明は、これら問題を解決するために前記糸弛み取り装置を改良するものである。
【0005】
【課題を解決するための手段】
弛み取りローラに対して糸を規則正しく巻き付かせるようにするために請求項1記載の本発明が採用した手段は、紡績機の紡績装置で紡績された糸条に係合可能に配置され、糸を外周面に巻き付ける弛み取りローラと、弛み取りローラを回転駆動する駆動手段と、弛み取りローラより下流側に配置され下流側ガイドを備え、弛み取りローラの外周面の基端側へ糸を供給して巻き付けさせ、巻き付けた糸をローラ先端側から下流側ガイドへ向かって解舒する紡績機の糸弛み取り装置であって、弛み取りローラより上流側に、弛み取りローラの外周面の基端側へ接近させた位置に糸ガイド点を有する上流側ガイドを配置したことを特徴とする紡績機の糸弛み取り装置である。
本発明にあっては、弛み取りローラへの糸の供給位置が安定するため、糸を弛み取りローラに規則正しく巻き付かせることができる。
【0006】
請求項2記載の本発明が採用した手段は、前記上流側ガイドの糸ガイド点を、弛み取りローラが右回転の場合にはローラ右半分側に位置させ、弛み取りローラが左回転の場合にはローラ左半分側に位置させた請求項1記載の紡績機の糸弛み取り装置である。
本発明にあっては、弛み取りローラに対する糸の進入方向と弛み取りローラの回転方向とが近接するため、弛み取りローラへの糸の供給位置が安定して、糸を弛み取りローラに規則正しく巻き付かせることができる。
【0007】
請求項3記載の本発明が採用した手段は、前記上流側ガイドの糸ガイド点を、前記弛み取りローラの基端側に形成してローラ先端側へ向かって行く程に縮径するテーパ部の大径部側に糸が導入されるように位置させた請求項1又は2記載の紡績機の糸弛み取り装置である。
本発明にあっては、弛み取りローラのテーパ部の大径部側へ糸を供給して巻き付かせるため、巻き付いた糸がテーパ部の小径部側へ移動していくことになり、糸を弛み取りローラに規則正しく巻き付かせることができる。
【0008】
弛み取りローラに対して糸を規則正しく巻き付かせると共に、巻き付いた糸を規則正しく解舒させるために請求項4記載の本発明が採用した手段は、前記弛み取りローラの外周面を、ローラ先端側へ向かって行く程に縮径する基端側のテーパ部と、ローラ先端側の鍔部と、これらの間の同径の円柱部とを有する形状とした請求項1乃至3のいずれか1項に記載する紡績機の糸弛み取り装置である。
本発明にあっては、弛み取りローラのテーパ部へ糸を供給して巻き付かせた糸がテーパ部の小径部へ移動して同径の円柱部へ至るため、糸を弛み取りローラの円柱部へ規則正しく巻き付かせることができると共に、解舒するときに、円柱部に巻き付いた糸の全体が一度に円柱部から抜け出るのをローラ先端側の鍔部が阻止するので、最初に巻き付いた糸から順番に引き出すことができる。
【0009】
捕捉する手段の構造を簡単にするために請求項5記載の本発明が採用した手段は、前記糸を捕捉する手段として、前記ローラ先端側の鍔部の円周の一部に切欠き部を設け、該切欠き部へ移動した糸を捕捉して、弛み取りローラの基端側に対する糸の供給を開始させるようにした請求項4記載の紡績機の糸弛み取り装置である。
本発明にあっては、走行中の糸を切欠き部へ移動させて切欠き部で捕捉することで、弛み取りローラの基端側に対する糸の供給を開始できる。
【0010】
捕捉する手段が解舒の障害とならないようにするために請求項6記載の本発明が採用した手段は、前記鍔部の外周部であって、前記切欠き部に隣接する部位に面取り部を設け、前記糸が巻き付け方向と逆方向へ移動しながら前記解舒を行うとき、該面取り部で糸を案内して前記切欠き部で糸を引っ掛けないようにした請求項5記載の紡績機の糸弛み取り装置である。
本発明にあっては、巻き付け方向と逆方向へ移動しながら解舒する糸を、切欠き部で引っ掛けることのないように面取り部で案内することができる。
【0011】
糸継ぎを確実にできるようにするために請求項7記載の本発明が採用した手段は、前記紡績機に糸継装置が備えられ、糸を捕捉して前記弛み取りローラへ糸を供給するタイミングを、糸継ぎを行うために前記糸継装置で糸を停止し始めるのと同時、またはこの停止開始直後とした請求項1乃至6のいずれか1項に記載する紡績機の糸弛み取り装置である。
本発明にあっては、糸継ぎ装置で糸を停止し始めるのと同時、またはこの停止開始直後に弛み取りローラへ糸を供給して巻き付けるので、糸継ぎ装置に導かれている糸は、弛み取りローラへ引っ張られても移動することなく糸継ぎができ、また、糸継ぎ中に紡績装置から送られてくる糸は、弛み取りローラへ巻き付けられて弛みを防止できる。
【0012】
捕捉と解舒のために糸を円滑に移動させるために請求項8記載の本発明が採用した手段は、前記下流側ガイドが、ガイド中の糸を前記弛み取りローラに捕捉させる前進位置と、糸のガイド点を前記弛み取りローラ先端より前方の前記回転中心線上に位置させる後退位置との間で進退する請求項1乃至7のいずれか1項に記載する紡績機の糸弛み取り装置である。
本発明にあっては、下流側ガイドを前進位置と後退位置との間で進退させることにより、下流側ガイドでガイドしながら糸を、捕捉させる位置と捕捉させることなく解舒させる位置との間を移動させることができる。
【0013】
全体の構造を簡単にするために請求項9記載の本発明が採用した手段は、前記弛み取りローラに糸を捕捉するための引掛け具を進退自在に設け、該引掛け具は、弛み取りローラが停止時又は等速回転時には、付勢手段で弛み取りローラ内に没入して糸を捕捉できない状態となり、弛み取りローラが加速回転中には、付勢手段に抗して弛み取りローラ内から捕捉位置まで突出する状態となる請求項1又は7に記載することを特徴とする紡績機の糸弛み取り装置である。
本発明にあっては、弛み取りローラを起動させると、加速回転中に引掛け具が捕捉位置まで突出して、紡績装置から送られてくる糸を弛み取りローラに巻き付けて弛みを取ることができるため、弛み取りローラが等速回転へ至って引掛け具が捕捉できない位置へ没入するまでの間に糸継ぎを完了させることができる。また、弛み取りローラを回転させて引掛け具を出没させることで、下流側ガイドを所定位置に停止させまま、弛み取りローラに対する糸の捕捉と解舒とができる。
【0014】
解舒中また解舒後の糸の円滑な走行を確保するために請求項10記載の本発明が採用した手段は、前記下流側ガイドと巻取装置との間に、糸に張力を付加する糸張力調整装置を設けた請求項1乃至9のいずれか1項に記載の紡績機の糸弛み取り装置である。
本発明にあっては、弛み取りローラから解舒して巻取り装置へ向かって進む糸に適度の張力を付与することができる。
【0015】
切断された糸が弛み取りローラに残留しないようにするために請求項11記載の本発明が採用した手段は、糸欠陥検出時に糸を切断する糸切断装置と巻取装置との間に前記弛み取りローラを設けた請求項1乃至10のいずれか1項に記載の紡績機の糸弛み取り装置である。
本発明にあっては、糸欠陥検出時に糸切断装置により糸が切断された時、弛み取りローラに巻き付いている糸が巻取装置により巻き取られることとなるため、弛み取りローラに糸が残らない。
【0016】
【発明の実施の形態】
以下、本発明に係る紡績機の糸弛み取り装置を図面に示す実施の形態に基づいて説明する。なお、本明細書において「上流」とは、糸の進行方向(走行方向)に対して上流という意味である。
【0017】
(第1の実施の形態)
図1乃至図7は本発明に係る糸弛み取り装置の第1の実施の形態を示すものであり、図1は本発明に係る糸弛み取り装置10を備えた紡績機の第1の実施の形態の主要部を示す側面図である。図2は糸弛み取り装置10の近辺を拡大して示す側面図であって、弛み取りローラ23に糸Yを弛み取りさせていない状態を示すものである。図3は糸弛み取り装置10の近辺を拡大して示す側面図であって、弛み取りローラ23に糸Yを捕捉させる直前を示すものである。図4は糸弛み取り装置10の近辺を拡大して示す斜視図であって、弛み取りローラ23に糸Yを弛み取りさせている状態を示すものである。図5は糸弛み取り装置10の近辺を拡大して示す側面図であって、弛み取りローラ23から糸Yを解舒している状態を示すものである。図6は糸弛み取り装置10の近辺を拡大して示す斜視図であって、弛み取りローラ23から糸Yを解舒している状態を示すものである。図7は弛み取りローラ23の単体を示すものであって、(A)は正面図、(B)は右側面図、(C)は(A)のc−c線で断面した断面図である。
【0018】
本実施の形態に係る紡績機1は、図1に示す如く、図面の紙面直交方向に紡績ユニットUを複数錘並設した紡績機本体2と、並設された紡績機本体2に沿って走行する糸継ぎのための作業台車3とを備えている。各紡績ユニットUは、糸道Eの上流側から下流側に沿って、ドラフト部4、紡績装置5、糸送り部6、糸吸込装置7、カッター8、糸欠陥検出器9、糸張力調整装置11及び巻取装置12を順に配置して構成されている。作業台車3は、糸継が必要な紡績ユニットUの所定位置へ移動して停止するようになっており、ノッターやスプライサー等の糸継ぎ装置17と、紡績装置5で形成された糸の端を吸引し該糸端を糸継ぎ装置17に導くための回動自在なサクションパイプ18と、巻取装置12に支持されたパッケージ16の巻き終わり糸端を吸引し該糸端を糸継ぎ装置17に導くために回動自在なサクションマウス19とを備えている。上記各紡績ユニットUには、糸弛み取り装置10が設けられている。糸弛み取り装置10は、上記通常の糸道Eから外れた位置に設けられているが、糸欠陥検出器9と糸張力調整装置11との間の糸条に係合可能になっている。
【0019】
各紡績ユニットUの前記ドラフト部4は、図1に示す如く、バックローラ4a、サードローラ4b、エプロン4cが張設されたセカンドローラ4d及びフロントローラ4eとからなる、一例として4線式のものが選択される。前記紡績装置5は、一例として、旋回気流を利用して紡績糸(以下、単に「糸」という。)Yを生成するものが選択される。前記糸送り部6は、ニップローラ6aとデリベリローラ6bとで糸Yを挟持して、下流側に送るようになっている。前記糸吸引装置7は、常時、吸引状態にあり、糸欠陥検出器9が糸Yのスラブ等の欠陥を検出した時に、カッター8で切断された紡績装置5側の糸Yを吸引口7aで吸引して除去するようになっている。
【0020】
各紡績ユニットUの前記糸弛み取り装置10は、糸継ぎ時の糸道である前記紡績機本体2の紡績装置5から前記作業台車3の糸継ぎ装置17へ至る糸道の途中に配置され、図2に示す如く、糸Yを外周面に巻き付ける弛み取りローラ23と、弛み取りローラ23を回転駆動する駆動手段24と、弛み取りローラ23より上流側に配置され、弛み取りローラ23の外周面23aの基端側Bへ接近させた上流側ガイド25と、弛み取りローラ23より下流側に配置され、弛み取りローラ23の回転中心線A上で糸Yをガイドする下流側ガイド26とを備えている。糸弛み取り装置10は、糸継ぎ時に、紡績ユニットUの紡績装置5から紡出されてくる糸Yを、図4に示すように、上流側ガイド25で弛み取りローラ23の外周面23aの基端側Bへ案内して巻き付けさせ、また、巻き付けた糸を、図5及び図6に示すように、ローラ先端側Dから下流側ガイド26へ向かって解舒するようになっている。駆動手段24は、電動モータからなり、その出力軸24aに弛み取りローラ23を取着してある。なお、駆動手段24は、図示は省略したが、糸送り部6を駆動するラインシャフトの回転動力を、伝動ベルト等を介して弛み取りローラ23に伝えて、常時回転させるようにしてもよい。
【0021】
前記上流側ガイド25は、図4に示す如く、弛み取りローラ23の外周面23aの基端側Bに、糸Yを案内するためのものである。上流側ガイド25により、弛み取りローラ23への糸Yの供給位置が安定するため、糸Yを弛み取りローラに規則正しく巻き付かせることができる。上流側ガイド25の糸を接触案内する糸ガイド点25aは、弛み取りローラ23の上方であって、弛み取りローラ23の回転方向Kが図4に示すようにローラ正面からみて右回転の場合にはローラ右半分側Rに位置させ、弛み取りローラ23が図示は省略したが左回転の場合にはローラ左半分側に位置させてある。糸弛み取り装置10は、糸ガイド点25aをこのように位置させることにより、弛み取りローラ23に対して糸Yが円滑に進入できるようになり、弛み取りローラ23への糸Yの供給位置が安定して、糸Yを弛み取りローラ23に規則正しく巻き付かせることができる。なお、弛み取りローラ23は、図2に示すように回転中心線Aをローラ先端側Dへ向かって下り傾斜して配置する場合と、図8に示すように回転中心線Aを水平状態に配置する場合とがある。
【0022】
更に、前記上流側ガイド25は、図5及び図6に示すように、その糸ガイド点25aを、弛み取りローラ23の基端側Bに形成してローラ先端側Dへ向かって行く程に縮径するテーパ部23b(図7(B)参照)の大径部側に糸Yが導入されるように位置させてある。糸弛み取り装置10は、糸ガイド点25aをこのように位置させることにより、テーパ部23bの大径部側へ糸を供給して巻き付かせるため、巻き付いた糸がテーパ部23bの小径部側へ移動していくことになり、糸Yを弛み取りローラ23に規則正しく巻き付かせることができる。
【0023】
前記下流側ガイド26は、図3及び図4に示すように、糸ガイド点26aでガイド中の糸Yを弛み取りローラ23に捕捉させる前進位置Fと、図5及び図6に示すように、糸ガイド点26aが弛み取りローラ23の先端より前方の回転中心線A上に位置する後退位置Gとの間で進退するようになっている。下流側ガイド26は、回動自在に枢支28するか、スライダー等(図示略)で回転中心線Aに沿って摺動自在に案内して、進退するようにしてある。糸弛み取り装置10は、下流側ガイド26を前進位置Fと後退位置Gとの間で進退させることにより、下流側ガイド26の糸ガイド点26aで走行中の糸Yをガイドしながら、捕捉させる位置と解舒させる位置との間を安定よく移動させることができる。
【0024】
前記弛み取りローラ23は、図7に示す如く、その外周面23aを、ローラ先端側Dへ向かって行く程に縮径する基端側Bのテーパ部23bと、ローラ先端側Dの鍔部23dと、これらの間の同径の円柱部23cとを有する形状に形成されている。弛み取りローラ23は、テーパ部23bの大径部23b−1へ糸Yを供給して巻き付かせた糸Yがテーパ部23bの小径部23b−1へ移動して同径の円柱部23cへ至るため、糸Yを円柱部23cへ規則正しく巻き付かせることができる(図4参照)と共に、解舒するときに、円柱部23cに巻き付いた糸Yの全体が一度に円柱部23cから抜け出るのをローラ先端側Dの鍔部23dが阻止するので、最初に巻き付いた糸Yから順番に引き出すことができる(図5及び図6参照)。
【0025】
更に、前記弛み取りローラ23は、図7に示す如く、糸を捕捉する手段となる切欠き部27を、ローラ先端側Dの鍔部23dの円周の一部に設け、鍔部23dへ移動した糸を切欠き部27で捕捉して(図3参照)、弛み取りローラ23の基端側に対する糸Yの供給を開始させるようになっている。切欠き部27は、ローラ先端側Dから基端側Bへ向かって凹設した略V字状からなり、回転中心線Aと平行な捕捉部27aと、切欠き部27内へ糸Yを導入し易いように回転方向Kへ傾斜した逃がし部27bとから形成されている。前記弛み取りローラ23は、下流側ガイド26を後退位置Gから前進位置Fまで移動させて、走行中の糸Yを切欠き部27内へ移動させて切欠き部27の捕捉部27aで捕捉することで、弛み取りローラ23の基端側に対する糸の供給を開始できる。
【0026】
また、前記弛み取りローラ23は、捕捉する手段となる切欠き部27が解舒の障害とならないようにするために、鍔部23dの外周部であって切欠き部27に隣接する部位に面取り部23e,23fを設け、糸Yが巻き付け方向と逆方向へ移動しながら前記解舒を行うとき、面取り部23e,23fで糸Yを案内して切欠き部27で引っ掛けないようになっている(図7参照)。弛み取りローラ23は、解舒する糸Yを面取り部23e,23fで案内して、切欠き部27で引っ掛けることのないようにして円滑に糸Yを解舒させることができる。
【0027】
前記糸弛み取り装置10において下流側ガイド26を後退位置G(図5参照)から前進位置F(図3参照)まで移動させて、走行中の糸Yを弛み取りローラ23に捕捉させるタイミングは、糸継ぎを行うために紡出側の糸Y1を前記糸継ぎ装置17(図1参照)で停止させる(クランプする)と同時、またはこの停止(クランプ)した直後としてある。このタイミングよりも早すぎると、ガイド26の移動及び弛み取りローラ23への糸巻き付けにより、糸継ぎ装置17に導かれている糸が引っ張られて糸継ぎミスを生じる。また、タイミングが遅すぎると、糸が弛み過ぎてガイド26や弛み取りローラ23への糸捕捉ミスが生じる。したがつて、このタイミングにすることで、弛み取りローラ23より下流側で糸継ぎ装置17へ導かれている糸Y1は、巻き付け中の弛み取りローラ23(図4参照)へ引っ張られても移動することなく糸継ぎができ、また、糸継ぎ中に紡績装置5から送られてくる糸Y1は、弛み取りローラ23へ巻き付けられて弛みを防止できる。
【0028】
図1に示すように、前記糸弛み取り装置10より下流側に設けられた糸張力調整装置11は、詳細図は省略したが、固定ガイドローラから離れる方向に付勢した可動ガイドローラで張力を付与する等の公知のものが選択される。前記巻取装置12は、フリクションローラ13及びクレードルアーム14を備え、クレードルアーム14で把持したボビン15をフリクションローラ11に接触させながらボビン15に糸を巻き付けてパッケージ16を形成するように構成されている。
【0029】
図1に示すように、糸継ぎのために前記作業台車3に備えられているサクションパイプ18は、枢支部20を中心に回動自在に設けられ、糸継ぎ作業の際に、先端に位置する吸引口18aを図中二点鎖線で示すように上方へ回動させて紡績装置5の糸排出口付近まで前進させ、紡出されてくる糸Yを吸引し、吸引状態のまま吸引口18aを図中実線で示すように下方へ回動させて紡績側の糸Yを糸継ぎ装置17へ導く紡績側吸引部材として機能する。サクションマウス19は、枢支部21を中心に回動自在に設けられ、糸継ぎ作業の際に、先端に位置する吸引口19aを図中二点鎖線で示すように下方へ回動させて、フリクションローラ13から離反して回転を停止しているパッケージ16の糸端を吸引して糸出しを行うとともに、吸引状態のまま吸引口19aを図中実線で示すように上方へ回動させてパッケージ側の糸Y2を糸継ぎ装置17へ導く巻取り側吸引部材として機能する。糸継ぎ装置17、サクションパイプ18及びサクションマウス19を紡績ユニットUの並設方向に沿って走行する作業台車3に設けることで、各紡績ユニットU毎に設ける必要がなく、構造が簡単である。
【0030】
前述の如く構成した紡績機1は、紡績時には、図1に示す繊維束Sをドラフト部4でドラフトした後、紡績装置5に入れて、紡績装置5内で発生している旋回気流により加撚して糸Yに生成する。その後、糸送り部6を構成するニップローラ6aとデリベリローラ6bとで糸Yを挟持して、下流側に送る。次いで、図2に示すように糸Yを糸吸引装置7の吸引口7aの前方を通過させると共に糸欠陥検出器9を挿通させ、糸弛み取り装置10の弛み取りローラ23に接触させることなく巻取装置12へ送り出し、フリクションローラ13に接触し回転しているパッケージ16に巻き上げる(図示略)。
【0031】
前記糸欠陥検出器9が、糸Yのスラブ等の欠陥を検出した場合には、カッター8で糸Yを切断する。切断されたパッケージ16側の糸Yは、パッケージ16に巻き取られる。また、ドラフト部4は、バックローラ4aとサードローラ4bの回転を停止させて、サードローラ4bと、回転を続行しているセカンドローラ4dとの間で繊維束Sを切断する。この切断と前記カッター8による切断とにより分離された紡績装置5側の糸Y及び繊維束Sは、回転を続行しているセカンドローラ4dとフロントローラ4eとにより送られながら糸吸引装置7に吸引されて除去される。
【0032】
続けて、ドラフト部4の停止していたバックローラ4aとサードローラ4bを作動させて、繊維束Sを、回転を続行しているセカンドローラ4dとフロントローラ4eとによりドラフトすると共に、紡績装置5に送り込み、紡績を再開し糸Yを生成する。生成されて連続的に紡出される糸Y1の糸端は、図1に二点鎖線で示されているように、紡績機本体2の糸排出口付近に、その吸引口13aを移動させているサクションパイプ18に吸引捕捉され、その後、同図に実線で示されているように、サクションパイプ18を下方に回動させることにより、糸Y1は、糸送り部6にニップローラ6aの側方から導入されると共に、糸継ぎ装置17に導かれる。このとき、糸吸引装置7の吸引口7aは閉鎖されている。このサクションパイプ18の回動と並行して、サクションマウス19は、先端に位置する吸引口19aを同図に二点鎖線で示されているように下方へ回動させて、フリクションローラ13から離反して回転を停止しているパッケージ16の糸端を吸引して糸出しを行うと共に、吸引状態のまま吸引口19aを同図に実線で示されているように上方へ回動させて、パッケージ側の糸Y2を糸継ぎ装置17付近へ配置させる。
【0033】
糸継ぎ装置17付近に配置された紡績装置5側の糸端Y1とパッケージ16側の糸端Y2とは、糸寄せ部材(図示略)の糸寄せレバーの回動により、糸継ぎ装置17の糸継ぎ部に導入され、糸継ぎされる。糸弛み取り装置10は、この糸寄せ後に糸を停止させる動作(糸をクランプする動作)開始と同時又は微小時間後(例えば、5msec)に、下流側ガイド26を後退位置Gから前進位置Fまで移動させて、走行中の糸Y1を弛み取りローラ23に捕捉して巻き付かせ、糸継ぎ動作(ノッタヘッドの回転等)中に紡績装置5と糸継ぎ装置17との間で生じる糸Y1の弛みを、弛み取りローラ23に貯留する。もし、この下流側ガイド26の移動が糸を停止させる動作開始よりも早いと、糸継ぎ動作のときに下流側ガイド26の移動及び弛み取りローラ23への巻付けによって糸Yが弛み取りローラ23側に引っ張られ、糸継ぎの失敗となる。逆にあまり遅いと、紡績装置5から次々に紡出されてくる糸Yに弛みが生じ、弛み取りローラ23に対する糸Yの捕捉を失敗する。
【0034】
糸継ぎ動作が終了した直後は、紡績機1は、糸弛み取り装置10の下流側ガイド26を前進位置F(図4参照)から後退位置G(図6参照)まで移動させると共に、フリクションローラ13にパッケージ16を接触させて巻き取りを再開させ、糸継ぎされた糸Yを弛み取りローラ23から解舒される糸Y(図6参照)と共に、回転を再開したパッケージ16に巻き取る。弛み取りローラ23から解舒される糸Y1は、糸張力調整装置11で適度の張力が付与され、パッケージ16へ円滑に巻き取られる。解舒される糸Yをフリクションローラ13で引っ張って、弛み取りローラ23から解舒する糸速度(すなわち、パッケージ16に巻き取る糸速度)を紡績装置5から紡出した糸Yを弛み取りローラ23に巻き付ける糸速度よりも速くすることにより、弛み取りローラ23に貯留している糸の全てを解舒し、図2に示すように、弛み取りローラ23から糸Yを自然に離反させることができる。
【0035】
(第2の実施の形態)
図8は本発明に係る糸弛み取り装置を備えた紡績機の第2の実施の形態の主要部を示す側面図であり、実線イは弛み取りローラ23に糸を弛み取りさせている状態を示し、二点鎖線ロは弛み取りローラ23から糸を解舒している状態を示し、一点鎖線ハは弛み取りローラ23に糸を弛み取りさせることなく走行している状態を示すものである。
【0036】
本実施の形態が前記第1の実施の形態と大きく異なる点は、弛み取りローラ23を回転中心線Aが水平となるように配置し、弛み取りローラ23の下流側に、糸吸引装置7、カッター8及び糸欠陥検出器9を配置したことである。この相違点以外の構成は、前記第1の実施の形態と実質的に同一である。
【0037】
(第3の実施の形態)
図9乃至図12は本発明に係る糸弛み取り装置の第3の実施の形態を示すものでって、図9は紡績機の糸弛み取り装置の近辺を拡大して示す側面図であって、弛み取りローラ43のローラ本体51に糸を捕捉させる直前を示すものである。図10は、電動モータ付き弛み取りローラ43を示す平面図であって、引掛け具52を後退させた状態を示すものである。図11は図10のb−b線で断面した正面図である。図12は電動モータ付き弛み取りローラ43を示すものであって、引掛け具52を突出させた状態を示すものであり、(A)は平面図、(B)は正面図である。
【0038】
本実施の形態に係る紡績機31が前記第1の実施の形態(図1乃至図7参照)に係る紡績機1と相違する点は、各紡績ユニットUに備える糸弛み取り装置40の弛み取りローラ43と下流側ガイド46である。この相違点以外の構成は、前記第1の実施の形態と実質的に同一であり、図1乃至図7に示す符号と同一の符号は同一の構成部材等を示す。
【0039】
弛み取りローラ43は、駆動手段24で回転駆動するローラ本体51に、捕捉するための引掛け具52を進退自在に設けてある。引掛け具52は、弛み取りローラ43のローラ本体51が停止時又は等速回転時には、ローラ本体51内に先端52aがバネ等の付勢手段53の反発弾性力で没入して捕捉できない状態(図10参照)となり、弛み取りローラ43が加速回転中には、付勢手段53の反発弾性力に抗してローラ本体51内から先端52aが捕捉位置Mまで突出する状態(図12参照)となる。
【0040】
前記弛み取りローラ43は、図11及び図10に示す如く、駆動手段24を取着するブラケット等の固定部54にボールベアリング等の軸受部材55を介して回転自在に軸支したローラ本体51と、ローラ本体51の挿通孔51aに摺動自在に挿通した棒状の引掛け具52と、駆動手段24の出力軸24aに固着したボス部56と、ボス部56に揺動自在に枢支57すると共に引掛け具52の折曲げた後端52bを係止した揺動部材58と、ローラ本体51にビス等で取着60,60して揺動部材58の揺動を規制する規制部材59と、規制部材59と揺動部材58との間に配置した蔓巻きバネ等からなる付勢手段53とを備えている。付勢手段53は、引掛け具52をローラ本体51内に引き戻す方向に常時作用している。引掛け具52は、ローラ本体51の回転の接線方向に沿って摺動するようにしてある。
【0041】
前記弛み取りローラ43は、引掛け具52に生じる遠心力(引掛け具52を突出させる方向に作用する力),ローラ本体51に生じる慣性力(引掛け具52を突出させる方向に作用する力)及び付勢手段53の弾性力(引掛け具52を引き戻す方向に作用する力)の関係で、加速中のある時点で引掛け具52がローラ本体51内から捕捉位置M(図12参照)まで突出し、等速回転に近づいた時点で引掛け具52がローラ本体51内の後退位置N(図10参照)まで後退するようになる。
【0042】
前記下流側ガイド46は、図9に示す如く、弛み取りローラ43の回転中心線A上の所定位置に、糸Yをガイドする糸ガイド点46aを位置させてある。この糸ガイド点46aと上流側ガイド25の糸ガイド点25aとの間で張架状態の糸Yは、弛み取りローラ43の引掛け具52が後退位置N(図10参照)まで後退してローラ本体51内に没入しているときには、弛み取りローラ43と接触することなく下流側へ送りだされ、また、弛み取りローラ43の引掛け具52が捕捉位置M(図12参照)まで突出しているときには、引掛け具52の先端52aで捕捉されてローラ本体51の外周面51aに巻き付いて貯留される。
【0043】
前記糸弛み取り装置40は、糸継ぎのために糸継ぎ装置17(図1参照)へ至る糸Yを停止させる(クランプさせる)のと同時、またはその停止(クランプ)の直後に弛み取りローラ43を起動させると、加速回転中に引掛け具52が捕捉位置Mまで突出して、紡績装置5から送られてくる糸Yを弛み取りローラ43のローラ本体51に巻き付けて弛みを取ることができる。また、弛み取りローラ43を回転させて引掛け具52の先端52aを出没させることで、下流側ガイド46の糸ガイド点46aを所定位置に停止させまま、弛み取りローラ43に対する糸の捕捉と解舒とができる。
【0044】
糸継ぎが完了すると、ローラ本体51の外周面に巻き付いて貯留している糸が、巻取装置12(図1参照)で引っ張られて、ローラ先端側Dから下流側ガイド46へ向かって解舒する。
【0045】
前記弛み取りローラ43のローラ本体51は、図12(B)に示す如く、その外周面51aを、ローラ先端側Dへ向かって行く程に縮径する基端側Bのテーパ部51bと、ローラ先端側Dの鍔部51dと、これらの間の中間テーパ部51cとを有する形状に形成されている。中間テーパ部51cは、ローラ先端側Dへ向かって行く程に縮径しており、その縮径する度合いが基端側Bのテーパ部51bより緩やかになっている。弛み取りローラ43のローラ本体51は、上流側ガイド25から基端側Bのテーパ部51bへ供給した糸Yが中間テーパ部51cへ導かれるため、糸Yを中間テーパ部51cへ規則正しく巻き付かせることができると共に、巻き付かせた糸を中間テーパ部51cの徐々に縮径するローラ先端側Dへ向かって移動させることができ、更に解舒するときに、中間テーパ部51cに巻き付いた糸Yの全体が一度に中間テーパ部51cから抜け出るのをローラ先端側Dの鍔部51dが阻止するので、最初に巻き付いた糸Yから順番に引き出すことができる。
【0046】
【発明の効果】
請求項1記載の本発明に係る紡績機の糸弛み取り装置は、上流側ガイドで弛み取りローラへの糸の供給位置が安定するので、糸を弛み取りローラに規則正しく巻き付かせることができ、巻き付いた糸を規則正しく解舒させることができる。したがって、糸切れ等のトラブルが生じない。
【0047】
請求項2記載の本発明に係る紡績機の糸弛み取り装置は、弛み取りローラに対する糸の進入方向と弛み取りローラの回転方向とを近接させて、弛み取りローラへの糸の供給位置を安定させることで、糸を弛み取りローラに規則正しく巻き付かせることができる。
【0048】
請求項3記載の本発明に係る紡績機の糸弛み取り装置は、弛み取りローラのテーパ部の大径部側へ供給して巻き付かせた糸がテーパ部の小径部側へ移動していくことになり、糸を弛み取りローラに規則正しく巻き付かせることができる。
【0049】
請求項4記載の本発明に係る紡績機の糸弛み取り装置は、弛み取りローラに対して糸を規則正しく巻き付かせると共に、巻き付いた糸を規則正しく解舒させることができる。
【0050】
請求項5記載の本発明に係る紡績機の糸弛み取り装置は、走行中の糸を切欠き部へ移動させて捕捉することで、弛み取りローラの基端側に対する糸の供給を開始できるので、捕捉する手段の構造を簡単にできる。
【0051】
請求項6記載の本発明に係る紡績機の糸弛み取り装置は、捕捉する手段が解舒の障害とならないので、弛み取りローラから糸を円滑に解舒させることができる。
【0052】
請求項7記載の本発明に係る紡績機の糸弛み取り装置は、糸継ぎ中に紡績装置から送られてくる糸を弛み取りローラへ巻き付けて弛みを防止すると共に、糸継ぎ装置に導かれている糸を停止させた状態で糸継ぎができるため、糸継ぎが確実にできる。
【0053】
請求項8記載の本発明に係る紡績機の糸弛み取り装置は、下流側ガイドでガイドしながら糸を、捕捉させる位置と捕捉させることなく解舒させる位置との間を移動させることができるので、捕捉と解舒が円滑にできる。
【0054】
請求項9記載の本発明に係る紡績機の糸弛み取り装置は、引掛け具を出没自在に備えることで弛み取りローラに対する糸の捕捉と解舒とができるため、全体の構造を簡単にすることができる。
【0055】
請求項10記載の本発明に係る紡績機の糸弛み取り装置は、弛み取りローラから解舒して巻取り部へ向かって進む糸に適度の張力を付与することで、解舒中また解舒後の糸の円滑な走行を確保できる。
【0056】
請求項11記載の本発明に係る紡績機の糸弛み取り装置は、切断した糸が弛み取りローラに残留しない。
【図面の簡単な説明】
【図1】本発明に係る糸弛み取り装置を備えた紡績機の第1の実施の形態の主要部を示す側面図である。
【図2】同実施の形態において糸弛み取り装置の近辺を拡大して示す側面図であって、弛み取りローラに糸を弛み取りさせていない状態を示すものである。
【図3】同実施の形態において糸弛み取り装置の近辺を拡大して示す側面図であって、弛み取りローラに糸を捕捉させる直前を示すものである。
【図4】同実施の形態において糸弛み取り装置の近辺を拡大して示す斜視図であって、弛み取りローラに糸を弛み取りさせている状態を示すものである。
【図5】同実施の形態において糸弛み取り装置の近辺を拡大して示す側面図であって、弛み取りローラから糸を解舒している状態を示すものである。
【図6】同実施の形態において糸弛み取り装置の近辺を拡大して示す斜視図であって、弛み取りローラから糸を解舒している状態を示すものである。
【図7】第1の実施の形態の弛み取りローラの単体を示すものであって、(A)は正面図、(B)は右側面図、(C)は(A)のc−c線で断面した断面図である。
【図8】本発明に係る糸弛み取り装置を備えた紡績機の第2の実施の形態の主要部を示す側面図である。
【図9】本発明に係る糸弛み取り装置を備えた紡績機の第3の実施の形態において糸弛み取り装置の近辺を拡大して示す側面図であって、弛み取りローラに糸を捕捉させる直前を示すものである。
【図10】第3の実施の形態の電動モータ付き弛み取りローラを示す平面図あって、引掛け具を後退させた状態を示すものである。
【図11】図10のb−b線で断面した正面図である。
【図12】第3の実施の形態の電動モータ付き弛み取りローラであって引掛け具を突出させた状態を示すものであり、(A)は平面図、(B)は正面図である。
【符号の説明】
1…紡績機、2…紡績機本体、5…紡績装置、7…糸吸引装置、8…カッター、9…糸欠陥検出器、10…糸弛み取り装置、11…糸張力調整装置、17…糸継ぎ装置、23…弛み取りローラ、23a…外周面、23b…テーパー部、23c…円柱部、23d…鍔部、23e,23f…面取り部、24…駆動手段、25…上流側ガイド、26…下流側ガイド、26a…糸ガイド点、27…切欠き部、40…糸弛み取り装置、43…弛み取りローラ、46…下流側ガイド、51…ローラ本体、52…引掛け具、53…付勢手段、A…回転中心線、B…基端側、E…糸道、D…ローラ先端側
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a yarn slack eliminating device for removing slack in a yarn from a spinning device that spins the yarn to a winding device that winds the yarn in a spinning machine.
[0002]
[Prior art]
In a high-speed spinning machine such as a pneumatic spinning machine, when a yarn defect is detected, the yarn defect is cut and removed by a cutter, and then the yarn tip and package sent one after another from the spinning device are removed. The rear end of the wound yarn is spliced. Since this yarn splicing is performed in a state in which both yarn ends are stopped, the yarns sent one after another from the spinning device are sucked by a suction tube called a slack tube so as to remove the slack of the yarn. By the way, with the recent increase in spinning speed, the amount of loosening of the yarn increases, which makes the suction tube longer, so there is a limit to cope with the suction tube method. In view of this, a yarn slack eliminating device has been proposed in which the yarn fed is temporarily wound around a slack eliminating roller to remove the slack from the yarn (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Publication No. 4-13272
[0004]
[Problems to be solved by the invention]
However, the yarn slack eliminating device has a complicated structure because the slack eliminating roller has a built-in mechanism for advancing and retracting the clutch mechanism or the return pin, and winding or unwinding of the yarn to the slack eliminating roller is not facilitated. There is. Therefore, the present invention improves the yarn slack eliminating device in order to solve these problems.
[0005]
[Means for Solving the Problems]
The means employed by the present invention according to claim 1 to regularly wind the yarn around the slack eliminating roller is disposed so as to be able to engage with the yarn spun by the spinning device of the spinning machine, Is disposed on the downstream side of the slack eliminating roller, a driving means for rotationally driving the slack eliminating roller, and a slack eliminating roller. Ru A yarn slack eliminating device for a spinning machine that has a downstream guide, feeds the yarn to the proximal end of the outer peripheral surface of the slack eliminating roller, winds the wound yarn, and unwinds the wound yarn from the roller front end toward the downstream guide. The upstream side of the slack eliminating roller is moved closer to the base end side of the outer peripheral surface of the slack eliminating roller. Thread guide point at A yarn slack eliminating device for a spinning machine, characterized in that an upstream guide is arranged.
In the present invention, since the supply position of the yarn to the slack eliminating roller is stabilized, the yarn can be regularly wound around the slack eliminating roller.
[0006]
The means adopted by the present invention as defined in claim 2 is such that the yarn guide point of the upstream guide is positioned on the right half side of the roller when the slack eliminating roller is rotating clockwise, and when the slack eliminating roller is rotating counterclockwise. 2. The yarn slack eliminating device for a spinning machine according to claim 1, which is located on the left half side of the roller.
In the present invention, the thread entry direction relative to the slack eliminating roller and the rotation direction of the slack eliminating roller are Proximity Therefore, the supply position of the yarn to the slack eliminating roller is stabilized, and the yarn can be regularly wound around the slack eliminating roller.
[0007]
According to a third aspect of the present invention, there is provided a taper portion that is formed so that a yarn guide point of the upstream guide is formed on a proximal end side of the slack eliminating roller and is reduced in diameter toward the roller distal end side. The yarn slack eliminating device for a spinning machine according to claim 1 or 2, wherein the yarn is positioned so that the yarn is introduced to the large diameter portion side.
In the present invention, the yarn is fed to the large diameter side of the taper portion of the slack eliminating roller and wound, so that the wound yarn moves to the small diameter side of the taper portion, The slack eliminating roller can be wound regularly.
[0008]
The means employed by the present invention according to claim 4 to regularly wind the yarn around the slack eliminating roller and to unwind the wound yarn regularly, Said A shape having a taper portion on the base end side that reduces the outer peripheral surface of the slack eliminating roller toward the roller front end side, a flange portion on the roller front end side, and a cylindrical portion having the same diameter therebetween. did It is described in any one of Claims 1 thru | or 3. This is a yarn slack eliminating device for a spinning machine.
In the present invention, the yarn that is wound by supplying the yarn to the taper portion of the slack eliminating roller moves to the small diameter portion of the taper portion and reaches the cylindrical portion of the same diameter. It can be wound regularly around the part, and when unwinding, the collar on the roller tip side prevents the whole thread wound around the cylinder part from coming out of the cylinder part at a time. Can be withdrawn in order.
[0009]
In order to simplify the structure of the catching means, the means adopted by the present invention according to claim 5 is a means for catching the yarn, wherein a notch is formed in a part of the circumference of the collar portion on the roller front end side. 5. The yarn slack eliminating device for a spinning machine according to claim 4, wherein the yarn slack removing device is provided to capture the yarn moved to the notch and start supplying the yarn to the proximal end side of the slack eliminating roller.
In the present invention, the supply of the yarn to the base end side of the slack eliminating roller can be started by moving the running yarn to the notch and capturing it at the notch.
[0010]
In order to prevent the capturing means from becoming an obstacle to unraveling, the means adopted by the present invention according to claim 6 is a peripheral portion of the flange portion, and a chamfered portion is provided at a portion adjacent to the notch portion. The spinning machine according to claim 5, wherein when the unwinding is performed while the yarn moves in a direction opposite to the winding direction, the yarn is guided by the chamfered portion and is not caught by the notched portion. This is a yarn slack eliminating device.
In the present invention, the yarn to be unwound while moving in the direction opposite to the winding direction can be guided by the chamfered portion so as not to be caught by the notch portion.
[0011]
The means employed by the present invention according to claim 7 to ensure the yarn splicing is: The spinning machine is equipped with a yarn splicing device, The timing of capturing and supplying the yarn to the slack eliminating roller is set at the same time as or immediately after the stop of the yarn by the yarn splicing device to perform the yarn splicing. It is described in any one of Claims 1 thru | or 6. This is a yarn slack eliminating device for a spinning machine.
In the present invention, since the yarn is supplied to the slack eliminating roller and wound at the same time when the yarn splicing device starts to stop or immediately after the start of the stop, the yarn guided to the splicing device is slackened. Even if it is pulled to the take-up roller, the yarn can be spliced without moving, and the yarn sent from the spinning device during the yarn splicing can be wound around the slack take-off roller to prevent the slack.
[0012]
The means employed by the present invention according to claim 8 to smoothly move the yarn for capturing and unwinding is: Said The downstream guide advances and retreats between a forward position where the yarn in the guide is captured by the slack eliminating roller and a retreat position where the guide point of the yarn is positioned on the rotation center line in front of the leading end of the slack eliminating roller. It is described in any one of Claims 1 thru | or 7. This is a yarn slack eliminating device for a spinning machine.
In the present invention, by moving the downstream guide forward and backward between the forward position and the backward position, while guiding with the downstream guide, between the position where the yarn is captured and the position where the thread is unwound without being captured. Can be moved.
[0013]
In order to simplify the overall structure, the means adopted by the present invention according to claim 9 is: Said For slack removal roller Thread A hooking tool for catching is provided so as to be able to advance and retreat.When the slack eliminating roller stops or rotates at a constant speed, the hooking tool is immersed in the slack eliminating roller by the urging means and cannot catch the yarn. While the slack eliminating roller is accelerating, the slack eliminating roller protrudes from the slack eliminating roller to the capture position against the biasing means. Claim 1 or 7 This is a yarn slack eliminating device for a spinning machine.
In the present invention, when the slack eliminating roller is activated, the hooking tool protrudes to the capture position during the acceleration rotation, and the slack can be removed by winding the yarn sent from the spinning device around the slack eliminating roller. Therefore, the piecing can be completed before the slack eliminating roller reaches constant speed rotation and is immersed in a position where the hooking tool cannot be captured. Further, by rotating the slack eliminating roller and causing the hooking tool to appear and retract, the yarn can be captured and unwound from the slack eliminating roller while the downstream guide is stopped at a predetermined position.
[0014]
In order to ensure smooth running of the yarn during unwinding and after unwinding, the means adopted by the present invention according to claim 10 is characterized in that the downstream guide And winding The yarn slack eliminating device for a spinning machine according to any one of claims 1 to 9, wherein a yarn tension adjusting device for applying tension to the yarn is provided between the yarn taking device and the take-up device.
In the present invention, an appropriate tension can be applied to the yarn that is unwound from the slack eliminating roller and proceeds toward the winding device.
[0015]
In order to prevent the cut yarn from remaining on the slack eliminating roller, the means employed by the present invention according to claim 11 is a yarn cutting device for cutting a yarn when a yarn defect is detected. And winding The yarn slack eliminating device for a spinning machine according to any one of claims 1 to 10, wherein the slack eliminating roller is provided between the yarn taking device and the take-off device.
In the present invention, when the yarn is cut by the yarn cutting device when the yarn defect is detected, the yarn wound around the slack eliminating roller is taken up by the winding device, so that the yarn remains on the slack eliminating roller. Absent.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a yarn slack eliminating device for a spinning machine according to the present invention will be described based on an embodiment shown in the drawings. In the present specification, “upstream” means upstream with respect to the traveling direction (traveling direction) of the yarn.
[0017]
(First embodiment)
1 to 7 show a first embodiment of a yarn slack eliminating device according to the present invention. FIG. 1 shows a first embodiment of a spinning machine provided with a yarn slack eliminating device 10 according to the present invention. It is a side view which shows the principal part of a form. FIG. 2 is an enlarged side view showing the vicinity of the yarn slack eliminating device 10, and shows a state where the yarn Y is not loosened by the slack eliminating roller 23. FIG. 3 is an enlarged side view showing the vicinity of the yarn slack eliminating device 10 and shows a state immediately before the slack eliminating roller 23 captures the yarn Y. FIG. FIG. 4 is an enlarged perspective view showing the vicinity of the yarn slack eliminating device 10 and shows a state in which the yarn Y is loosened by the slack eliminating roller 23. FIG. 5 is an enlarged side view showing the vicinity of the yarn slack eliminating device 10, and shows a state where the yarn Y is unwound from the slack eliminating roller 23. FIG. 6 is an enlarged perspective view showing the vicinity of the yarn slack eliminating device 10, and shows a state where the yarn Y is unwound from the slack eliminating roller 23. 7A and 7B show a single body of the slack eliminating roller 23, where FIG. 7A is a front view, FIG. 7B is a right side view, and FIG. 7C is a cross-sectional view taken along line cc of FIG. .
[0018]
As shown in FIG. 1, the spinning machine 1 according to the present embodiment travels along a spinning machine body 2 in which a plurality of spinning units U are juxtaposed in a direction orthogonal to the drawing sheet, and the spinning machine body 2 arranged in parallel. And a work carriage 3 for piecing. Each spinning unit U includes a draft unit 4, a spinning device 5, a yarn feeding unit 6, a yarn suction device 7, a cutter 8, a yarn defect detector 9, and a yarn tension adjusting device from the upstream side to the downstream side of the yarn path E. 11 and the winding device 12 are arranged in order. The work carriage 3 moves to a predetermined position of the spinning unit U that requires yarn splicing and stops, and sucks the yarn splicing device 17 such as a knotter or splicer and the yarn end formed by the spinning device 5. A rotatable suction pipe 18 for guiding the yarn end to the yarn joining device 17 and a winding end yarn end of the package 16 supported by the winding device 12 are sucked to guide the yarn end to the yarn joining device 17. Therefore, a rotatable suction mouse 19 is provided. Each spinning unit U is provided with a yarn slack eliminating device 10. The yarn slack eliminating device 10 is provided at a position deviated from the normal yarn path E, but can be engaged with a yarn between the yarn defect detector 9 and the yarn tension adjusting device 11.
[0019]
As shown in FIG. 1, the draft section 4 of each spinning unit U is composed of a back roller 4a, a third roller 4b, a second roller 4d on which an apron 4c is stretched, and a front roller 4e. Is selected. For example, the spinning device 5 is selected to generate a spun yarn (hereinafter simply referred to as “yarn”) Y using a swirling airflow. The yarn feeding section 6 is configured to sandwich the yarn Y between the nip roller 6a and the delivery roller 6b and send it to the downstream side. The yarn suction device 7 is always in a suction state, and when the yarn defect detector 9 detects a defect such as a slab of the yarn Y, the yarn Y on the spinning device 5 side cut by the cutter 8 is drawn through the suction port 7a. It is designed to be removed by suction.
[0020]
The yarn slack eliminating device 10 of each spinning unit U is disposed in the middle of a yarn path from the spinning device 5 of the spinning machine body 2 that is a yarn path at the time of yarn splicing to the yarn splicing device 17 of the working carriage 3. As shown in FIG. 2, the slack eliminating roller 23 for winding the yarn Y around the outer peripheral surface, the driving means 24 for rotationally driving the slack eliminating roller 23, and the outer peripheral surface of the slack eliminating roller 23 disposed upstream of the slack eliminating roller 23. An upstream guide 25 that is close to the proximal end B of 23a, and a downstream guide 26 that is disposed downstream of the slack eliminating roller 23 and guides the yarn Y on the rotation center line A of the slack eliminating roller 23. ing. As shown in FIG. 4, the yarn slack eliminating device 10 causes the upstream guide 25 to remove the base of the outer peripheral surface 23a of the slack eliminating roller 23 from the spinning device 5 of the spinning unit U during yarn splicing. As shown in FIGS. 5 and 6, the wound yarn is unwound from the roller front end D toward the downstream guide 26 as shown in FIGS. 5 and 6. The driving means 24 is composed of an electric motor, and a slack eliminating roller 23 is attached to the output shaft 24a. Although not shown, the driving means 24 may transmit the rotational power of the line shaft that drives the yarn feeding section 6 to the slack eliminating roller 23 via a transmission belt or the like, so that the driving means 24 is always rotated.
[0021]
The upstream guide 25 is for guiding the yarn Y to the base end side B of the outer peripheral surface 23a of the slack eliminating roller 23 as shown in FIG. Since the upstream side guide 25 stabilizes the supply position of the yarn Y to the slack eliminating roller 23, the yarn Y can be regularly wound around the slack eliminating roller. The yarn guide point 25a that contacts and guides the yarn of the upstream guide 25 is above the slack eliminating roller 23, and when the rotation direction K of the slack eliminating roller 23 is clockwise when viewed from the front of the roller as shown in FIG. Is positioned on the right half side R of the roller, and the slack eliminating roller 23 is not shown in the figure but is positioned on the left half side of the roller in the case of left rotation. The yarn slack eliminating device 10 allows the yarn Y to smoothly enter the slack eliminating roller 23 by positioning the yarn guide point 25a in this way, and the supply position of the yarn Y to the slack eliminating roller 23 is determined. It is possible to stably wind the yarn Y around the slack eliminating roller 23 regularly. The slack eliminating roller 23 is arranged with the rotation center line A inclined downward toward the roller front end D as shown in FIG. 2 and the rotation center line A arranged in a horizontal state as shown in FIG. There is a case to do.
[0022]
Further, as shown in FIGS. 5 and 6, the upstream guide 25 is formed so that the yarn guide point 25 a is formed on the proximal end side B of the slack eliminating roller 23 and is reduced toward the roller distal end D. The yarn Y is positioned so as to be introduced to the large diameter portion side of the taper portion 23b (see FIG. 7B). Since the yarn slack eliminating device 10 positions the yarn guide point 25a in this manner, the yarn is supplied to the large diameter portion side of the taper portion 23b to be wound, so that the wound yarn is on the small diameter portion side of the taper portion 23b. As a result, the yarn Y can be regularly wound around the slack eliminating roller 23.
[0023]
As shown in FIGS. 3 and 4, the downstream guide 26 has a forward position F at which the loosening roller 23 captures the yarn Y being guided at the yarn guide point 26 a, and as shown in FIGS. 5 and 6. The yarn guide point 26a advances and retreats between a retracted position G positioned on the rotation center line A ahead of the tip of the slack eliminating roller 23. The downstream guide 26 is pivotally supported 28, or is slidably guided along the rotation center line A with a slider or the like (not shown) so as to advance and retreat. The yarn slack eliminating device 10 causes the downstream guide 26 to move forward and backward between the forward position F and the backward position G, thereby capturing the traveling yarn Y while guiding it at the thread guide point 26a of the downstream guide 26. It is possible to stably move between the position and the position to be solved.
[0024]
As shown in FIG. 7, the slack eliminating roller 23 has a base end B taper portion 23b whose outer peripheral surface 23a is reduced in diameter toward the roller front end side D, and a flange portion 23d on the roller front end side D. And a cylindrical portion 23c having the same diameter between them. The slack eliminating roller 23 supplies the yarn Y to the large-diameter portion 23b-1 of the taper portion 23b and the yarn Y wound is moved to the small-diameter portion 23b-1 of the taper portion 23b to the cylindrical portion 23c having the same diameter. Therefore, the yarn Y can be regularly wound around the cylindrical portion 23c (see FIG. 4), and when unwinding, the entire yarn Y wound around the cylindrical portion 23c is pulled out from the cylindrical portion 23c at a time. Since the flange portion 23d on the roller front end side D blocks, the yarn Y wound around first can be pulled out in order (see FIGS. 5 and 6).
[0025]
Further, as shown in FIG. 7, the slack eliminating roller 23 is provided with a notch 27 serving as a means for catching the yarn in a part of the circumference of the collar 23d on the roller front end D, and moves to the collar 23d. The cut yarn 27 is captured by the cutout portion 27 (see FIG. 3), and supply of the yarn Y to the proximal end side of the slack eliminating roller 23 is started. The notch 27 has a substantially V-shape that is recessed from the roller front end D toward the base end B, and introduces the yarn Y into the notch 27 and the catch 27 a parallel to the rotation center line A. In order to facilitate this, it is formed from an escape portion 27b inclined in the rotation direction K. The slack eliminating roller 23 moves the downstream guide 26 from the retreat position G to the advance position F, moves the running yarn Y into the notch 27, and is captured by the catch 27a of the notch 27. Thus, the supply of the yarn to the proximal end side of the slack eliminating roller 23 can be started.
[0026]
Further, the slack eliminating roller 23 is chamfered at a portion adjacent to the notch 27 on the outer peripheral portion of the flange 23d so that the notch 27 serving as a capturing means does not become an obstacle to unraveling. When the unwinding is performed while the yarn Y moves in the direction opposite to the winding direction, the yarn Y is guided by the chamfered portions 23e and 23f and is not caught by the notch 27. (See FIG. 7). The slack eliminating roller 23 can guide the yarn Y to be unwound by the chamfered portions 23e and 23f and smoothly unwind the yarn Y without being caught by the notch 27.
[0027]
In the yarn slack eliminating device 10, the downstream guide 26 is moved from the retreat position G (see FIG. 5) to the advance position F (see FIG. 3) and the traveling yarn Y is captured by the slack eliminating roller 23. The yarn Y1 on the spinning side is stopped (clamped) by the yarn splicing device 17 (see FIG. 1) in order to perform the yarn splicing, or immediately after the stop (clamping). If the timing is too early, the yarn guided to the yarn splicing device 17 is pulled by the movement of the guide 26 and the yarn winding around the slack eliminating roller 23, and a yarn splicing error occurs. On the other hand, if the timing is too late, the yarn is too slack and a yarn catching error on the guide 26 or the slack eliminating roller 23 occurs. Therefore, at this timing, the yarn Y1 guided to the yarn splicing device 17 on the downstream side of the slack eliminating roller 23 moves even if it is pulled by the slack eliminating roller 23 (see FIG. 4) being wound. The yarn Y1 can be spliced without sag, and the yarn Y1 sent from the spinning device 5 during the piecing can be wound around the slack eliminating roller 23 to prevent the slack.
[0028]
As shown in FIG. 1, the yarn tension adjusting device 11 provided on the downstream side of the yarn slack eliminating device 10 is not shown in detail, but tension is applied by a movable guide roller biased away from the fixed guide roller. A known one such as giving is selected. The winding device 12 includes a friction roller 13 and a cradle arm 14, and is configured to wind a thread around the bobbin 15 while the bobbin 15 gripped by the cradle arm 14 is in contact with the friction roller 11 to form a package 16. Yes.
[0029]
As shown in FIG. 1, a suction pipe 18 provided in the work carriage 3 for piecing is provided so as to be rotatable about a pivotal portion 20, and is located at the tip during the piecing operation. The suction port 18a is rotated upward as indicated by a two-dot chain line in the drawing to advance to the vicinity of the yarn discharge port of the spinning device 5, the spun yarn Y is sucked, and the suction port 18a is kept sucked. As shown by a solid line in the figure, it functions as a spinning side suction member that rotates downward to guide the spinning side yarn Y to the splicing device 17. The suction mouse 19 is provided so as to be rotatable about the pivotal support portion 21, and when the yarn splicing operation is performed, the suction port 19 a positioned at the tip is rotated downwardly as indicated by a two-dot chain line in the drawing, and the friction is applied. The yarn end of the package 16 which is separated from the roller 13 and stops rotating is sucked to remove the yarn, and the suction port 19a is rotated upward as indicated by the solid line in the sucked state so that the package side Functions as a winding-side suction member that guides the yarn Y2 to the yarn splicing device 17. By providing the yarn splicing device 17, the suction pipe 18, and the suction mouth 19 on the work carriage 3 that travels along the direction in which the spinning units U are arranged, it is not necessary to provide each spinning unit U, and the structure is simple.
[0030]
In the spinning machine 1 configured as described above, the fiber bundle S shown in FIG. 1 is drafted by the drafting unit 4 and then placed in the spinning device 5 and twisted by the swirling airflow generated in the spinning device 5 at the time of spinning. Thus, the yarn Y is generated. Thereafter, the yarn Y is sandwiched between the nip roller 6a and the delivery roller 6b constituting the yarn feeding section 6 and sent to the downstream side. Next, as shown in FIG. 2, the yarn Y is passed through the front of the suction port 7 a of the yarn suction device 7 and the yarn defect detector 9 is inserted so that the yarn Y is wound without being brought into contact with the slack eliminating roller 23 of the yarn slack eliminating device 10. The sheet is fed to the take-up device 12 and is wound up on a rotating package 16 in contact with the friction roller 13 (not shown).
[0031]
When the yarn defect detector 9 detects a defect such as a slab of the yarn Y, the cutter 8 cuts the yarn Y. The cut yarn Y on the package 16 side is wound around the package 16. The draft section 4 stops the rotation of the back roller 4a and the third roller 4b, and cuts the fiber bundle S between the third roller 4b and the second roller 4d that continues to rotate. The yarn Y and the fiber bundle S on the spinning device 5 side separated by this cutting and the cutting by the cutter 8 are sucked by the yarn suction device 7 while being fed by the second roller 4d and the front roller 4e that continue to rotate. To be removed.
[0032]
Subsequently, the back roller 4a and the third roller 4b that have stopped the draft section 4 are operated, and the fiber bundle S is drafted by the second roller 4d and the front roller 4e that continue to rotate, and the spinning device 5 The spinning is resumed and the yarn Y is generated. The yarn end of the yarn Y1 that is generated and continuously spun is moved in the vicinity of the yarn discharge port of the spinning machine body 2 as shown by a two-dot chain line in FIG. As shown by the solid line in the drawing, the yarn Y1 is introduced into the yarn feed section 6 from the side of the nip roller 6a by rotating the suction pipe 18 downward as shown by the solid line in FIG. And is guided to the yarn splicing device 17. At this time, the suction port 7a of the yarn suction device 7 is closed. In parallel with the rotation of the suction pipe 18, the suction mouth 19 rotates the suction port 19 a located at the tip downward as indicated by a two-dot chain line in FIG. Then, the yarn end of the package 16 which has stopped rotating is sucked to remove the yarn, and the suction port 19a is rotated upward as indicated by the solid line in the drawing state to The side yarn Y2 is arranged in the vicinity of the yarn splicing device 17.
[0033]
The yarn end Y1 on the spinning device 5 side and the yarn end Y2 on the package 16 side disposed near the yarn joining device 17 are rotated by a yarn gathering lever (not shown) of the yarn gathering member (not shown). It is introduced into the joint and spliced. The yarn slack eliminating device 10 moves the downstream guide 26 from the retracted position G to the advanced position F simultaneously with the start of the operation to stop the yarn after the yarn gathering (operation to clamp the yarn) or after a minute time (for example, 5 msec). The traveling yarn Y1 is captured and wound around the slack eliminating roller 23, and the yarn Y1 loosens between the spinning device 5 and the yarn splicing device 17 during the yarn splicing operation (rotation of the knotter head, etc.). Is stored in the slack eliminating roller 23. If the movement of the downstream guide 26 is earlier than the start of the operation for stopping the yarn, the yarn Y is slackened by the movement of the downstream guide 26 and wound around the slack eliminating roller 23 during the yarn splicing operation. Pulled to the side, failing to splice. On the other hand, if it is too slow, the yarn Y spun one after another from the spinning device 5 is slackened, and the yarn Y cannot be captured by the slack eliminating roller 23.
[0034]
Immediately after the yarn splicing operation is completed, the spinning machine 1 moves the downstream guide 26 of the yarn slack eliminating device 10 from the forward position F (see FIG. 4) to the backward position G (see FIG. 6), and the friction roller 13 Winding is resumed by bringing the package 16 into contact therewith, and the spliced yarn Y is wound around the package 16 that has been rotated again together with the yarn Y (see FIG. 6) unwound from the loosening roller 23. The yarn Y1 unwound from the slack eliminating roller 23 is given a proper tension by the yarn tension adjusting device 11, and is smoothly wound around the package 16. The yarn Y to be unwound is pulled by the friction roller 13, and the yarn speed at which the yarn Y is unwound from the slack eliminating roller 23 (that is, the yarn speed to be wound around the package 16) is spun from the spinning device 5. By making it faster than the yarn speed wound around the yarn, all of the yarn stored in the slack eliminating roller 23 can be unwound and the yarn Y can be naturally separated from the slack eliminating roller 23 as shown in FIG. .
[0035]
(Second Embodiment)
FIG. 8 is a side view showing the main part of the second embodiment of the spinning machine equipped with the yarn slack eliminating device according to the present invention, and the solid line “a” indicates a state in which the slack removing roller 23 is slackening the yarn. The two-dot chain line B shows the state where the yarn is unwound from the slack eliminating roller 23, and the one-dot chain line C shows a state where the slack removing roller 23 runs without causing the yarn to loosen.
[0036]
The present embodiment is greatly different from the first embodiment in that the slack eliminating roller 23 is disposed so that the rotation center line A is horizontal, and the yarn suction device 7 is disposed on the downstream side of the slack eliminating roller 23. That is, the cutter 8 and the yarn defect detector 9 are arranged. The configuration other than this difference is substantially the same as that of the first embodiment.
[0037]
(Third embodiment)
9 to 12 show a third embodiment of the yarn slack eliminating device according to the present invention, and FIG. 9 is an enlarged side view showing the vicinity of the yarn slack eliminating device of the spinning machine. 3 shows the state immediately before the roller body 51 of the slack eliminating roller 43 captures the yarn. FIG. 10 is a plan view showing the slack eliminating roller 43 with an electric motor, and shows a state in which the hooking tool 52 is retracted. FIG. 11 is a front view taken along line bb of FIG. FIG. 12 shows the slack eliminating roller 43 with an electric motor, which shows a state in which the hooking tool 52 is projected, (A) is a plan view, and (B) is a front view.
[0038]
The spinning machine 31 according to the present embodiment is different from the spinning machine 1 according to the first embodiment (see FIGS. 1 to 7) in that the yarn slack eliminating device 40 provided in each spinning unit U is loosened. A roller 43 and a downstream guide 46. The configuration other than this difference is substantially the same as that of the first embodiment, and the same reference numerals as those shown in FIGS. 1 to 7 denote the same constituent members.
[0039]
The slack eliminating roller 43 is provided with a catcher 52 for catching on a roller body 51 that is rotationally driven by the driving means 24 so as to be able to advance and retreat. When the roller body 51 of the slack eliminating roller 43 stops or rotates at a constant speed, the hook 52 is in a state where the tip 52a is immersed in the roller body 51 by the repulsive elastic force of the urging means 53 such as a spring and cannot be captured ( When the slack eliminating roller 43 is accelerating and rotating, the tip 52a protrudes from the roller body 51 to the capture position M against the repulsive elastic force of the biasing means 53 (see FIG. 12). Become.
[0040]
As shown in FIGS. 11 and 10, the slack eliminating roller 43 includes a roller main body 51 rotatably supported on a fixing portion 54 such as a bracket for attaching the driving means 24 via a bearing member 55 such as a ball bearing. The rod-like hooking tool 52 slidably inserted into the insertion hole 51 a of the roller body 51, the boss portion 56 fixed to the output shaft 24 a of the driving means 24, and the boss portion 56 are pivotally supported 57. In addition, a swinging member 58 that holds the bent rear end 52b of the hooking tool 52, and a regulating member 59 that restricts the swinging of the swinging member 58 by attaching 60, 60 to the roller body 51 with screws or the like. And an urging means 53 including a vine spring disposed between the regulating member 59 and the swinging member 58. The urging means 53 always acts in the direction in which the hooking tool 52 is pulled back into the roller body 51. The hook 52 is slid along the tangential direction of rotation of the roller body 51.
[0041]
The slack eliminating roller 43 has a centrifugal force (force acting in the direction in which the hook 52 is projected) generated in the hook 52 and an inertial force (force acting in the direction in which the hook 52 is projected) generated in the roller body 51. ) And the elastic force of the urging means 53 (force acting in the direction in which the hook 52 is pulled back) at a certain point during acceleration, the hook 52 is caught from the inside of the roller body 51 at the capture position M (see FIG. 12) The hook 52 is retracted to the retracted position N (see FIG. 10) in the roller main body 51 when it approaches the constant speed rotation.
[0042]
As shown in FIG. 9, the downstream guide 46 has a yarn guide point 46 a for guiding the yarn Y at a predetermined position on the rotation center line A of the slack eliminating roller 43. In the tensioned yarn Y between the yarn guide point 46a and the yarn guide point 25a of the upstream guide 25, the hook 52 of the slack eliminating roller 43 moves back to the retracted position N (see FIG. 10). When it is immersed in the main body 51, it is fed downstream without contacting the slack eliminating roller 43, and the hooking tool 52 of the slack eliminating roller 43 protrudes to the capture position M (see FIG. 12). Sometimes, it is caught by the tip 52a of the hook 52, wound around the outer peripheral surface 51a of the roller body 51, and stored.
[0043]
The yarn slack eliminating device 40 stops or clamps the yarn Y reaching the yarn splicing device 17 (see FIG. 1) for yarn splicing or immediately after the stop (clamping). Is activated, the hook 52 protrudes to the capture position M during the acceleration rotation, and the yarn Y sent from the spinning device 5 can be wound around the roller body 51 of the slack eliminating roller 43 to remove the slack. Further, by rotating the slack eliminating roller 43 and causing the tip 52a of the hooking tool 52 to protrude and retract, the yarn guide point 46a of the downstream guide 46 is stopped at a predetermined position, and the yarn is captured and unbound from the slack eliminating roller 43. You can do it.
[0044]
When the yarn splicing is completed, the yarn wound around and stored on the outer peripheral surface of the roller body 51 is pulled by the winding device 12 (see FIG. 1), and is unwound from the roller front end D toward the downstream guide 46. To do.
[0045]
As shown in FIG. 12B, the roller body 51 of the slack eliminating roller 43 includes a taper portion 51b on the base end side B whose diameter decreases toward the roller front end side D, and a roller. It is formed in a shape having a flange portion 51d on the distal end side D and an intermediate taper portion 51c therebetween. The intermediate taper portion 51c is reduced in diameter toward the roller front end D, and the degree of diameter reduction is gentler than that of the taper portion 51b on the base end side B. The roller body 51 of the slack eliminating roller 43 causes the yarn Y supplied from the upstream guide 25 to the taper portion 51b on the base end side B to be guided to the intermediate taper portion 51c, so that the yarn Y is regularly wound around the intermediate taper portion 51c. In addition, the wound yarn can be moved toward the roller tip side D where the diameter of the intermediate taper portion 51c is gradually reduced, and when further unwinding, the yarn Y wound around the intermediate taper portion 51c Since the collar portion 51d on the roller front end side D prevents the entire thread from coming out of the intermediate taper portion 51c at a time, the yarn Y wound around first can be pulled out in order.
[0046]
【The invention's effect】
In the yarn slack eliminating device for a spinning machine according to the present invention of claim 1, since the supply position of the yarn to the slack eliminating roller is stabilized by the upstream guide, the yarn can be regularly wound around the slack eliminating roller, The wound thread can be unwound regularly. Therefore, troubles such as thread breakage do not occur.
[0047]
According to a second aspect of the present invention, there is provided a yarn slack eliminating device for a spinning machine comprising: a yarn entering direction with respect to a slack eliminating roller; and a rotation direction of the slack eliminating roller. Proximity Thus, by stabilizing the supply position of the yarn to the slack eliminating roller, the yarn can be regularly wound around the slack eliminating roller.
[0048]
In the yarn slack eliminating device for a spinning machine according to the third aspect of the present invention, the yarn supplied and wound around the tapered portion of the slack eliminating roller moves toward the small diameter portion of the tapered portion. As a result, the yarn can be regularly wound around the slack eliminating roller.
[0049]
The yarn slack eliminating device for a spinning machine according to the fourth aspect of the present invention is capable of regularly winding the yarn around the slack eliminating roller and unwinding the wound yarn regularly.
[0050]
The yarn slack eliminating device for a spinning machine according to the fifth aspect of the present invention can start supplying yarn to the base end side of the slack eliminating roller by moving and capturing the running yarn to the notch. The structure of the capturing means can be simplified.
[0051]
In the yarn slack eliminating device for a spinning machine according to the sixth aspect of the present invention, since the capturing means does not become an obstacle to unwinding, the yarn can be smoothly unwound from the slack eliminating roller.
[0052]
According to a seventh aspect of the present invention, there is provided a yarn slack eliminating device for a spinning machine in which a yarn sent from the spinning device is wound around a slack eliminating roller during yarn splicing to prevent slack, and is guided to the yarn splicing device. Since the yarn can be spliced while the existing yarn is stopped, the splicing can be reliably performed.
[0053]
In the yarn slack eliminating device for a spinning machine according to the eighth aspect of the present invention, the yarn can be moved between the position to be caught and the position to be unwound without being caught while being guided by the downstream guide. Smooth capture and unwinding.
[0054]
The yarn slack eliminating device for a spinning machine according to the ninth aspect of the present invention simplifies the overall structure since the yarn catching and unwinding of the slack eliminating roller can be performed by providing the hooking tool so as to be freely retractable. be able to.
[0055]
A yarn slack eliminating device for a spinning machine according to a tenth aspect of the present invention provides an appropriate tension to the yarn that is unwound from the slack eliminating roller and proceeds toward the winding portion, so that the yarn is unwound or unwound. Smooth running of the subsequent yarn can be ensured.
[0056]
In the yarn slack eliminating device for a spinning machine according to the eleventh aspect of the present invention, the cut yarn does not remain on the slack eliminating roller.
[Brief description of the drawings]
FIG. 1 is a side view showing a main part of a spinning machine having a yarn slack eliminating device according to a first embodiment of the present invention.
FIG. 2 is an enlarged side view showing the vicinity of the yarn slack eliminating device in the same embodiment, and shows a state where the yarn is not slack removed by the slack eliminating roller.
FIG. 3 is an enlarged side view showing the vicinity of the yarn slack eliminating device in the same embodiment, and shows a state immediately before the slack removing roller catches the yarn.
FIG. 4 is an enlarged perspective view showing the vicinity of the yarn slack eliminating device in the same embodiment, and shows a state in which the slack removing roller is slackening the yarn.
FIG. 5 is an enlarged side view showing the vicinity of the yarn slack eliminating device in the same embodiment, and shows a state where the yarn is unwound from the slack eliminating roller.
6 is an enlarged perspective view showing the vicinity of the yarn slack eliminating device in the same embodiment, and shows a state where the yarn is unwound from the slack eliminating roller. FIG.
FIGS. 7A and 7B show a single body of the slack eliminating roller according to the first embodiment, in which FIG. 7A is a front view, FIG. 7B is a right side view, and FIG. 7C is a cc line in FIG. FIG.
FIG. 8 is a side view showing a main part of a second embodiment of a spinning machine including a yarn slack eliminating device according to the present invention.
FIG. 9 is an enlarged side view showing the vicinity of a yarn slack eliminating device in a third embodiment of a spinning machine equipped with a yarn slack eliminating device according to the present invention, in which a yarn is caught by a slack eliminating roller. Indicates just before.
FIG. 10 is a plan view showing a slack eliminating roller with an electric motor according to a third embodiment, and shows a state in which a hooking tool is retracted.
11 is a front view taken along line bb of FIG.
12A and 12B show a slack eliminating roller with an electric motor according to a third embodiment in a state in which a hooking tool is protruded, where FIG. 12A is a plan view and FIG. 12B is a front view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Spinning machine, 2 ... Spinning machine main body, 5 ... Spinning device, 7 ... Yarn suction device, 8 ... Cutter, 9 ... Yarn defect detector, 10 ... Yarn slack eliminating device, 11 ... Yarn tension adjusting device, 17 ... Yarn Jointing device, 23 ... slack eliminating roller, 23a ... outer peripheral surface, 23b ... taper part, 23c ... cylindrical part, 23d ... collar part, 23e, 23f ... chamfering part, 24 ... drive means, 25 ... upstream guide, 26 ... downstream Side guide, 26a ... thread guide point, 27 ... notch, 40 ... thread slack eliminating device, 43 ... slack eliminating roller, 46 ... downstream guide, 51 ... roller body, 52 ... hooking tool, 53 ... biasing means , A ... rotation center line, B ... proximal end side, E ... yarn path, D ... roller tip side

Claims (11)

紡績機の紡績装置で紡績された糸条に係合可能に配置され、糸を外周面に巻き付ける弛み取りローラと、弛み取りローラを回転駆動する駆動手段と、弛み取りローラより下流側に配置され下流側ガイドを備え、弛み取りローラの外周面の基端側へ糸を供給して巻き付けさせ、巻き付けた糸をローラ先端側から下流側ガイドへ向かって解舒する紡績機の糸弛み取り装置であって、弛み取りローラより上流側に、弛み取りローラの外周面の基端側へ接近させた位置に糸ガイド点を有する上流側ガイドを配置したことを特徴とする紡績機の糸弛み取り装置。It is arranged to be able to engage with the yarn spun by the spinning device of the spinning machine, and is arranged on the downstream side of the slack eliminating roller for winding the yarn around the outer peripheral surface, the driving means for rotationally driving the slack eliminating roller, and the slack eliminating roller. that includes a downstream guide, let wound and supplies the yarn to the proximal end side of the outer peripheral surface of the slack eliminating roller, wrapped yarn roller tip spinning machine for unwinding toward the downstream guide from the side of the yarn slack eliminating device An upstream guide having a yarn guide point is disposed on the upstream side of the slack eliminating roller at a position close to the base end side of the outer peripheral surface of the slack eliminating roller. apparatus. 前記上流側ガイドの糸ガイド点を、弛み取りローラが右回転の場合にはローラ右半分側に位置させ、弛み取りローラが左回転の場合にはローラ左半分側に位置させた請求項1記載の紡績機の糸弛み取り装置。The thread guide point of the upstream guide is positioned on the right half side of the roller when the slack eliminating roller rotates clockwise, and is positioned on the left half side of the roller when the slack eliminating roller rotates counterclockwise. Thread spinning device for spinning machines. 前記上流側ガイドの糸ガイド点を、前記弛み取りローラの基端側に形成してローラ先端側へ向かって行く程に縮径するテーパ部の大径部側に糸が導入されるように位置させた請求項1又は2記載の紡績機の糸弛み取り装置。A position where the yarn guide point of the upstream guide is formed on the base end side of the slack eliminating roller and the yarn is introduced to the large diameter portion side of the taper portion which decreases in diameter toward the roller front end side. The yarn slack eliminating device for a spinning machine according to claim 1 or 2, wherein 前記弛み取りローラの外周面を、ローラ先端側へ向かって行く程に縮径する基端側のテーパ部と、ローラ先端側の鍔部と、これらの間の同径の円柱部とを有する形状とした請求項1乃至3のいずれか1項に記載する紡績機の糸弛み取り装置。 The shape which has the taper part of the base end side which diameter-reduces the outer peripheral surface of the said slack removal roller so that it goes to the roller front end side, the collar part of a roller front end side, and the cylindrical part of the same diameter between these The yarn slack eliminating device for a spinning machine according to any one of claims 1 to 3 . 前記糸を捕捉する手段として、前記ローラ先端側の鍔部の円周の一部に切欠き部を設け、該切欠き部へ移動した糸を捕捉して、弛み取りローラの基端側に対する糸の供給を開始させるようにした請求項4記載の紡績機の糸弛み取り装置。As a means for catching the yarn, a notch is provided in a part of the circumference of the collar on the tip side of the roller, the yarn moved to the notch is caught, and the yarn against the proximal end side of the slack eliminating roller The yarn slack eliminating device for a spinning machine according to claim 4, wherein the supply of the yarn is started. 前記鍔部の外周部であって、前記切欠き部に隣接する部位に面取り部を設け、前記糸が巻き付け方向と逆方向へ移動しながら前記解舒を行うとき、該面取り部で糸を案内して前記切欠き部で糸を引っ掛けないようにした請求項5記載の紡績機の糸弛み取り装置。A chamfered portion is provided on the outer peripheral portion of the collar portion adjacent to the notch portion, and when the unwinding is performed while the yarn moves in the direction opposite to the winding direction, the yarn is guided by the chamfered portion. The yarn slack eliminating device for a spinning machine according to claim 5, wherein the yarn is not caught at the notch. 前記紡績機に糸継装置が備えられ、糸を捕捉して前記弛み取りローラへ糸を供給するタイミングを、糸継ぎを行うために前記糸継装置で糸を停止し始めるのと同時、またはこの停止開始直後とした請求項1乃至6のいずれか1項に記載する紡績機の糸弛み取り装置。 The spinning machine is equipped with a yarn splicing device, and the timing for capturing the yarn and supplying the yarn to the slack eliminating roller is the same as when the yarn splicing device starts to stop the yarn to perform the splicing, or this The yarn slack eliminating device for a spinning machine according to any one of claims 1 to 6, wherein the yarn slack eliminating device is immediately after the stop is started. 前記下流側ガイドが、ガイド中の糸を前記弛み取りローラに捕捉させる前進位置と、糸のガイド点を前記弛み取りローラ先端より前方の前記回転中心線上に位置させる後退位置との間で進退する請求項1乃至7のいずれか1項に記載する紡績機の糸弛み取り装置。 The downstream guide advances and retreats between a forward position where the yarn in the guide is captured by the slack eliminating roller and a retreat position where the guide point of the yarn is positioned on the rotation center line ahead of the leading end of the slack eliminating roller. The yarn slack eliminating device for a spinning machine according to any one of claims 1 to 7 . 前記弛み取りローラに糸を捕捉するための引掛け具を進退自在に設け、該引掛け具は、弛み取りローラが停止時又は等速回転時には、付勢手段で弛み取りローラ内に没入して糸を捕捉できない状態となり、弛み取りローラが加速回転中には、付勢手段に抗して弛み取りローラ内から捕捉位置まで突出する状態となる請求項1又は7に記載することを特徴とする紡績機の糸弛み取り装置。Provided retractably a hooking tool for capturing the yarn to the slack eliminating roller, the cited hanger, during slack eliminating roller rotation stop time or constant velocity, and sinks into the slack eliminating the roller urging means 8. The yarn according to claim 1 or 7, wherein the yarn cannot be captured and the slack eliminating roller protrudes from the slack eliminating roller to the capture position against the biasing means during the acceleration rotation. Thread loosening device for spinning machines. 前記下流側ガイドと巻取装置との間に、糸に張力を付加する糸張力調整装置を設けた請求項1乃至9のいずれか1項に記載の紡績機の糸弛み取り装置。Spinning machine the yarn slack eliminating device described in any one of claims 1 to 9 provided with a thread tension adjusting device for adding tension to the yarn between the downstream guide and the winder. 糸欠陥検出時に糸を切断する糸切断装置と巻取装置との間に前記弛み取りローラを設けた請求項1乃至10のいずれか1項に記載の紡績機の糸弛み取り装置。Spinning machine the yarn slack eliminating device according to any one of the slack eliminating claims 1 to 10 roller is provided between the yarn cutting device and the winding device for cutting a yarn when a yarn defect detection.
JP2002293465A 2002-10-07 2002-10-07 Thread loosening device for spinning machine Expired - Fee Related JP4048902B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2002293465A JP4048902B2 (en) 2002-10-07 2002-10-07 Thread loosening device for spinning machine
EP03021099A EP1407995A3 (en) 2002-10-07 2003-09-18 Yarn slack eliminating device for spinning machine
CN 200710096054 CN101033566B (en) 2002-10-07 2003-09-30 Yarn relaxation eliminating device used for spinning machine
CNB031326900A CN1333122C (en) 2002-10-07 2003-09-30 Yarn relaxation eliminating device used for spinning machine

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JP2002293465A JP4048902B2 (en) 2002-10-07 2002-10-07 Thread loosening device for spinning machine

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JP2004124333A JP2004124333A (en) 2004-04-22
JP4048902B2 true JP4048902B2 (en) 2008-02-20

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CN101033566B (en) 2010-05-26
CN1333122C (en) 2007-08-22

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