JP3994559B2

JP3994559B2 - Ear forming device in loom

Info

Publication number: JP3994559B2
Application number: JP35126298A
Authority: JP
Inventors: 章史赤堀
Original assignee: Toyota Industries Corp
Current assignee: Toyota Industries Corp
Priority date: 1998-12-10
Filing date: 1998-12-10
Publication date: 2007-10-24
Anticipated expiration: 2018-12-10
Also published as: JP2000170052A

Description

【０００１】
【発明の属する技術分野】
本発明は、耳糸供給用ボビンを保持する耳糸供給用回転体と、耳糸の開口を形成する耳糸開口用回転体とをそれぞれ一方向にのみ同期回転させて耳糸を開閉口させる織機における耳形成装置に関するものである。
【０００２】
【従来の技術】
特開平３−９７９４４号公報に開示されるもじり耳形成装置では、固定された太陽歯車の同軸上に回転中心を持つ支持歯車の側面に一対の中継歯車及び一対の遊星歯車が回動可能に支持されている。中継歯車は太陽歯車及び遊星歯車の両方に噛合している。支持歯車の回転によって中継歯車が太陽歯車に噛合しながらその周囲を半周すると、遊星歯車は支持歯車上で逆方向へ１回転する。太陽歯車の周囲を公転する遊星歯車の軸にはボビンホルダが装着されており、ボビンホルダに支持されたもじり耳用のボビンの耳糸は糸張力によってボビンから引き出される。遊星歯車機構を用いた耳形成装置では部品点数が増え、構造が複雑になるという欠点がある。
【０００３】
遊星歯車機構を用いない耳形成装置が特開昭５６−５３２３４号公報に開示されている。耳糸開口用回転盤には一対のガイド孔が耳糸開口用回転盤の回転中心から同一の直径線方向に互いに離れた周辺部に形成されており、両ガイド孔に通された一対の耳糸が耳糸開口用回転盤の回転によって開閉口運動を行なう。前記一対の耳糸は耳糸供給ボビン保持用回転盤に搭載された一対のボビンから供給される。耳糸供給ボビン保持用回転盤には一対のガイド孔が耳糸供給ボビン保持用回転盤の回転中心から同一の直径線方向に互いに離れた周辺部に形成されている。両ボビンから繰り出される耳糸は、耳糸供給ボビン保持用回転盤側の一対のガイド孔を通されてから耳糸開口用回転盤側の一対のガイド孔に通される。耳糸供給ボビン保持用回転盤の回転中心線と耳糸開口用回転盤の回転中心線とは平行にしてあり、両回転盤は同一方向へ回転する。耳糸開口用回転盤のみが回転すると、耳糸供給ボビン保持用回転盤と耳糸開口用回転盤との間で一対の耳糸が捩れてしまう。そのため、耳糸供給ボビン保持用回転盤を耳糸開口用回転盤と同一方向へ回転させて前記捩れの発生防止が行われている。
【０００４】
【発明が解決しようとする課題】
特開昭５６−５３２３４号公報に開示される装置では、耳糸が回転盤の側面で交錯するために回転盤を中心軸でもって支持することができない。そのため、複数の回転ローラを回転盤の周面に接触させて回転盤を複数の回転ローラで支持する構成が採用されている。しかし、このような支持構成では、遊星歯車機構を用いた耳形成装置と比較しても部品点数を減らすことはできない。
【０００５】
本発明は、特開昭５６−５３２３４号公報に開示される装置のように耳糸供給用回転体及び耳糸開口用回転体を一方向にのみ同期回転させる耳形成装置における部品点数を減らすことを目的とする。
【０００６】
【課題を解決するための手段】
そのために本発明は、耳糸供給用ボビンを保持すると共に、回転中心軸線から互いに逆方向に離れるように設けられた一対の糸ガイド孔を有する耳糸供給用回転体と、前記耳糸供給用回転体の一対の糸ガイド孔から供給される耳糸がそれぞれ挿通される回転中心軸線から互いに逆方向に離れるように設けられた一対の糸ガイド孔を有する耳糸開口用回転体とをそれぞれ一方向にのみ同期回転させる耳形成装置を対象とし、請求項１の発明では、前記耳糸供給用回転体側の一対の糸ガイド孔のうちの一方から前記耳糸開口用回転体側の一対の糸ガイド孔のうちの一方に至る第１の糸経路と、前記耳糸供給用回転体側の一対の糸ガイド孔のうちの他方から前記耳糸開口用回転体側の一対の糸ガイド孔のうちの他方に至る第２の糸経路とを備えた耳形成装置を構成し、前記耳糸開口用回転体を貫通するように前記耳糸開口用回転体の回転中心軸線上に配置される支軸内に前記第１及び第２の糸経路を設けた。
【０００７】
耳糸開口用回転体を貫通するように前記耳糸開口用回転体の回転中心軸線上に前記第１及び第２の糸経路を設けた構成は、耳糸開口用回転体をその回転中心軸線上で支持可能とする。このような支持構成は耳形成装置の部品点数を減らす上で有効である。
【０００９】
請求項２の発明では、請求項１において、前記耳糸供給用回転体の回転中心軸線と前記耳糸開口用回転体の回転中心軸線とは平行とし、前記耳糸供給用回転体及び前記耳糸開口用回転体の一対の糸ガイド孔は前記耳糸供給用回転体及び前記耳糸開口用回転体の支軸を支持する側板を挟んで両側に配置され、前記耳糸供給用回転体と前記耳糸開口用回転体とは互いに逆方向に回転するようにした。
【００１０】
耳糸開口用回転体と耳糸供給用回転体とを互いに逆方向に回転する構成は、耳糸開口用回転体側の糸ガイド孔の周回領域と、耳糸供給用回転体側の糸ガイド孔の周回領域とを前記支軸を挟んで前記耳糸開口用回転体の回転中心軸線の方向の両側に振り分け可能となる。このような振り分けは、耳糸供給用ボビンの交換を容易にする。
【００１１】
請求項３の発明では、請求項２において、前記耳糸供給用回転体は歯車部を備えるとともに、前記耳糸供給用回転体の支軸の端部に止着されて前記歯車部と一体的に回転する耳糸供給用ガイド体を備え、前記耳糸開口用回転体は歯車部を備えるとともに、前記耳糸開口用回転体の支軸の端部に止着されて前記歯車部と一体的に回転する耳糸開口用ガイド体を備えており、前記耳糸供給用回転体の歯車部と前記耳糸開口用回転体の歯車部とは同形同大で互いに噛合するようにした。
【００１２】
耳糸供給用回転体及び耳糸開口用回転体の一方の回転力が両歯車部を介して他方に伝達され、両回転体が互いに逆方向に回転する。耳糸供給用回転体及び耳糸開口用回転体の一方の回転力を両歯車部を介して他方に伝達する構成は、機構の簡素化をもたらす。
【００１３】
【発明の実施の形態】
以下、本発明を具体化した第１の実施の形態を図１〜図６に基づいて説明する。
【００１４】
図１に示すように、織機のサイドフレーム（図示略）には駆動軸１１が回転可能に支持されており、駆動軸１１には駆動歯車１２が止着されている。駆動軸１１は、図示しない織機駆動モータから駆動力を得ている。駆動軸１１は図１に示す矢印Ｒ１の方向に回転する。
【００１５】
図３に示すように、前記サイドフレームには支持枠１３が止着されている。支持枠１３は、一対の側板１４，１５と、両側板１４，１５間に介在された複数の隔離ブロック１６と、両側板１４，１５及び隔離ブロック１６を貫通するボルト１７と、ボルト１７に螺着されたナット１８とからなる。両側板１４，１５はボルト１７とナット１８との締め付け作用によって隔離ブロック１６に圧接され、隔離ブロック１６は両側板１４，１５を互いに所定間隔に隔離する。
【００１６】
両側板１４，１５には筒状の支軸１９がラジアルベリング２０を介して回転可能に支持されており、両側板１４，１５間において支軸１９には耳糸開口用歯車２１が止着されている。両側板１４，１５には支軸２２がラジアルベリング２３を介して回転可能に支持されており、両側板１４，１５間において支軸２２には耳糸供給用歯車２４が止着されている。耳糸開口用歯車２１及び耳糸供給用歯車２４は同形同大である。図５に示すように、両歯車２１，２４は互いに噛合しており、耳糸開口用歯車２１は駆動歯車１２に噛合している。駆動軸１１の回転に伴い、耳糸開口用歯車２１は図２に示す矢印Ｒ２の方向に回転し、耳糸供給用歯車２４は図１に示す矢印Ｒ３の方向に回転する。
【００１７】
側板１５の内側方（図３において側板１５の左側）において支軸１９の端部には耳糸開口用ガイド体２５が止着されている。耳糸開口用ガイド体２５の両端部には糸ガイド孔２５１，２５２が形成されている。糸ガイド孔２５１，２５２は、耳糸開口用歯車２１の回転中心軸線Ｌ２から互いに逆方向へ等距離だけ離れた位置にある。耳糸開口用ガイド体２５は耳糸開口用歯車２１と一体的に回転する。耳糸開口用歯車２１、支軸１９及び耳糸開口用ガイド体２５は、耳糸開口用回転体を構成する。
【００１８】
図２に示すように、耳糸開口用ガイド体２５には抉り部２５３，２５４が形成されている。抉り部２５３，２５４の存在は回転中心軸線Ｌ２及び糸ガイド孔２５１，２５２を通る平面に関して耳糸開口用ガイド体２５を非対称形状にする。耳糸開口用ガイド体２５は、回転中心軸線Ｌ２を中心として１８０°の回転毎に一致する回転対称形状をしている。
【００１９】
側板１４の外側方（図３において側板１４の右側）において支軸２２の端部には耳糸供給用ガイド体２６が止着されている。耳糸供給用ガイド体２６の両端部には糸ガイド孔２６１，２６２が形成されている。糸ガイド孔２６１，２６２は、耳糸供給用歯車２４の回転中心軸線Ｌ３から互いに逆方向へ等距離だけ離れた位置にある。耳糸供給用ガイド体２６は耳糸供給用歯車２４と一体的に回転する。耳糸供給用歯車２４、支軸２２及び耳糸供給用ガイド体２６は、耳糸供給用回転体を構成する。
【００２０】
図１に示すように、耳糸供給用ガイド体２６には抉り部２６３，２６４が形成されている。抉り部２６３，２６４の存在は回転中心軸線Ｌ３及び糸ガイド孔２６１，２６２を通る平面に関して耳糸供給用ガイド体２６を非対称形状にする。耳糸供給用ガイド体２６は、回転中心軸線Ｌ３を中心として１８０°の回転毎に一致する回転対称形状をしている。
【００２１】
耳糸供給用ガイド体２６には一対の耳糸供給用のボビン２７，２８が装着されている。ボビン２７，２８から引き出される耳糸Ｔ１，Ｔ２は、張力付与器２９，３０の糸ガイド孔２９１，３０１に通されて張力を付与される。糸ガイド孔２９１を通された耳糸Ｔ１は、耳糸供給用ガイド体２６の裏側から表側へと糸ガイド孔２６１に通される。糸ガイド孔３０１に通された耳糸Ｔ２は、耳糸供給用ガイド体２６の裏側から表側へと糸ガイド孔２６２に通される。糸ガイド孔２９１，３０１から糸ガイド孔２６１，２６２に至る糸経路は最短経路である。
【００２２】
糸ガイド孔２６１，２６２に通された耳糸Ｔ１，Ｔ２は、側板１４の外側方に沿ってから支軸１９の筒内に通される。支軸１９の筒内は両耳糸Ｔ１，Ｔ２の共通経路１９１となる。共通経路１９１を通された耳糸Ｔ１は、側板１５の内側方に沿ってから耳糸開口用ガイド体２５の裏側から表側へと糸ガイド孔２５１に通される。共通経路１９１を通された耳糸Ｔ２は、側板１５の内側方に沿ってから耳糸開口用ガイド体２５の裏側から表側へと糸ガイド孔２５２に通される。共通経路１９１から糸ガイド孔２５１，２５２に至る糸経路は最短経路である。
【００２３】
図１に示すように、耳糸供給用ガイド体２６の糸ガイド孔２６１から耳糸開口用ガイド体２５側の糸ガイド孔２５１に至る耳糸Ｔ１の第１の糸経路は、糸ガイド孔２５１と織前Ｗ１との間の部分が耳糸開口用ガイド体２５の回転に伴って範囲Ｅ１にわたって変位する。耳糸供給用ガイド体２６側の糸ガイド孔２６２から耳糸開口用ガイド体２５側の糸ガイド孔２５２に至る耳糸Ｔ２の第２の糸経路は、糸ガイド孔２５１と織前Ｗ１との間の部分が耳糸開口用ガイド体２５の回転に伴って範囲Ｅ１にわたって変位する。即ち、糸ガイド孔２５１，２５２に通された耳糸Ｔ１，Ｔ２は、糸ガイド孔２５１，２５２と織布Ｗの織前Ｗ１との間で耳糸開口用歯車２１の回転に伴って開閉口運動を行なう。
【００２４】
図４に示すように、側板１４には経路差吸収用糸ガイド３１が立設されている。経路差吸収用糸ガイド３１は山型をしており、経路差吸収用糸ガイド３１の曲線部３１１は円弧である。経路差吸収用糸ガイド３１の側板１４から計った最上位位置は、耳糸供給用ガイド体２６の最上位位置（即ち、耳糸供給用ガイド体２６の糸ガイド孔２６１，２６２）よりも高い。図１に示すように、耳糸供給用ガイド体２６側の糸ガイド孔２６１から耳糸開口用ガイド体２５側の糸ガイド孔２５１に至る耳糸Ｔ１の第１の糸経路は、糸ガイド孔２６１と共通経路１９１との間の部分が耳糸供給用ガイド体２６の回転に伴って範囲Ｅ２にわたって変位する。耳糸供給用ガイド体２６側の糸ガイド孔２６２から耳糸開口用ガイド体２５側の糸ガイド孔２５２に至る耳糸Ｔ２の第２の糸経路は、糸ガイド孔２６２と共通経路１９１との間の部分が耳糸供給用ガイド体２６の回転に伴って範囲Ｅ２にわたって変位する。経路差吸収用糸ガイド３１は、支軸１９と耳糸供給用ガイド体２６との間で耳糸供給用ガイド体２６の回転に伴う耳糸Ｔ１，Ｔ２の糸経路の変位範囲Ｅ２にわたって配置されている。
【００２５】
図６（ａ），（ｅ）は最大開口状態を示し、図６（ｃ）は閉口状態を示す。図６（ｂ），（ｄ）は最大開口状態と閉口状態との中間状態を示す。
第１の実施の形態では以下の効果が得られる。
（１-1）前記第１の糸経路と第２の糸経路とは、耳糸開口用歯車２１、支軸１９及び耳糸開口用ガイド体２５からなる耳糸開口用回転体の回転中心軸線Ｌ２を貫通する共通経路１９１から分流して糸ガイド孔２５１，２５２に至る。従って、前記第１の糸経路及び第２の糸経路は、耳糸開口用ガイド体２５の回転に伴って耳糸開口用ガイド体２５の表側でのみ回転中心軸線Ｌ２と交錯し、前記第１の糸経路及び第２の糸経路が耳糸開口用ガイド体２５の裏側で回転中心軸線Ｌ２と交錯することはない。即ち、耳糸開口用回転体を貫通するように回転中心軸線Ｌ２上に共通経路１９１を設けた構成は、耳糸開口用回転体をその回転中心軸線Ｌ２上で支持可能とする。このような支持構成は耳形成装置の部品点数を減らす上で有効である。
（１-2）支軸１９は共通経路１９１の形成位置として最適である。
（１-3）前記第１の糸経路と第２の糸経路とは、耳糸供給用ガイド体２６側の糸ガイド孔２６１，２６２から共通経路１９１へと合流する。従って、前記第１の糸経路及び第２の糸経路は、耳糸供給用ガイド体２６の回転に伴って耳糸供給用ガイド体２６の表側でのみ回転中心軸線Ｌ３と交錯し、前記第１の糸経路及び第２の糸経路が耳糸供給用ガイド体２６の裏側で回転中心軸線Ｌ３と交錯することはない。即ち、耳糸開口用回転体を貫通するように回転中心軸線Ｌ２上に共通経路１９１を設けた構成は、耳糸供給用回転体をその回転中心軸線Ｌ３上で支持可能とする。このような支持構成は耳形成装置の部品点数を減らす上で有効である。
（１-4）共通経路１９１を備えた耳糸開口用回転体と耳糸供給用回転体とを互いに逆方向に回転させる場合には、耳糸開口用ガイド体２５と耳糸供給用ガイド体２６とを支持枠１３を挟んで両側に振り分ける必要がある。即ち、耳糸開口用回転体側の糸ガイド孔２５１，２５２の周回領域と、耳糸供給用回転体側の糸ガイド孔２６１，２６２の周回領域とは、共通経路１９１を挟んで耳糸開口用回転体側の回転中心軸線Ｌ２の方向の両側に振り分けられなければならない。これは共通経路１９１と耳糸供給用ガイド体２６との間での耳糸Ｔ１，Ｔ２の捩りをなくすためである。従って、耳糸開口用ガイド体２５は前記サイドフレームの内側を向き、耳糸供給用ガイド体２６は前記サイドフレームの外側を向く。このような振り分けは、耳糸供給用ガイド体２６に装着された耳糸供給用のボビン２７，２８の交換を容易にする。
（１-5）耳糸開口用回転体の回転力が歯車部となる耳糸開口用歯車２１及び歯車部となる耳糸供給用歯車２４を介して耳糸供給用回転体に伝達され、両回転体が互いに逆方向に回転する。耳糸開口用回転体の回転を直接耳糸供給用回転体に伝達する構成は、機構の簡素化をもたらし、耳形成装置の部品点数が少なくて済む。
（１-6）張力付与器２９，３０はボビン２７，２８から引き出される耳糸Ｔ１，Ｔ２の糸経路を最初に規制する始発ガイド体となる。張力付与器２９，３０の糸ガイド孔２９１，３０１は、ボビン２７，２８から引き出される耳糸Ｔ１，Ｔ２の糸経路を最初に規制する始発糸ガイド部となる。耳糸供給用ガイド体２６の表側に装着されたボビン２７，２８から引き出される耳糸Ｔ１，Ｔ２の経路は、耳糸供給用ガイド体２６の裏側から糸ガイド孔２６１，２６２を通って耳糸供給用ガイド体２６の表側に出る必要がある。抉り部２６３，２６４の存在は糸ガイド孔２９１，３０１から糸ガイド孔２６１，２６２に至る糸経路を最短にする。抉り部２６３，２６４がないとすると糸ガイド孔２９１，３０１から糸ガイド孔２６１，２６２に至る糸経路が最短経路にならず、経路変動が生じやすい。このような経路変動は張力変動をもたらし易い。糸ガイド孔２９１，３０１から糸ガイド孔２６１，２６２に至る糸経路を最短経路とする構成は経路変動防止の上で有効である。
（１-7）共通経路１９１から分流する耳糸Ｔ１，Ｔ２の経路は、耳糸開口用ガイド体２５の裏側から糸ガイド孔２５１，２５２を通って耳糸開口用ガイド体２５の表側に出る必要がある。抉り部２５３，２５４の存在は共通経路１９１から糸ガイド孔２５１，２５２に至る糸経路を最短にする。抉り部２５３，２５４がないとすると共通経路１９１から糸ガイド孔２５１，２５２に至る糸経路が最短経路にならず、経路変動が生じやすい。このような経路変動は張力変動をもたらし易い。共通経路１９１から糸ガイド孔２５１，２５２に至る糸経路を最短経路とする構成は経路変動防止の上で有効である。
（１-8）前記第１の糸経路及び第２の糸経路における大きな経路差は張力変動をもたらし易く、張力変動は良好な耳形成を阻害する。図１に示す耳糸Ｔ１，Ｔ２の最大開口角θを２７°、糸ガイド孔２５１，２５２，２６１，２６２の公転半径を７０mm、共通経路１９１から織前Ｗ１までの距離を３００mmとした場合、本実施の形態における糸経路の最大経路は６０５mm程度、最小経路は５８０mm程度となる。この経路差は、（６０５mm−５８０mm）／６０５mm≒４．１３％である。特開昭５６−５３２３４号公報の装置では、本実施の形態と同じ条件のもとでの糸経路の最大経路は４６４mm、最小経路は４３３mm程度となる。この経路差は、（４６４mm−４３３mm）／４６４mm≒６．８％である。このような経路差の違いは共通経路１９１の有無によるものであり、耳糸開口用回転体２５の回転中心軸線Ｌ２上の共通経路１９１は、各耳糸Ｔ１，Ｔ２の経路差を少なくすることに寄与する。
（１-9）耳糸Ｔ１，Ｔ２の閉口時には糸ガイド孔２６１，２６２と共通経路１９１との間の耳糸Ｔ１，Ｔ２が経路差吸収用糸ガイド３１の曲線部３１１の左右中央を通り、耳糸供給用ガイド体２６と耳糸Ｔ１，Ｔ２との接触が回避される。耳糸Ｔ１，Ｔ２の最大開口時には糸ガイド孔２６１，２６２と共通経路１９１との間の耳糸Ｔ１，Ｔ２が経路差吸収用糸ガイド３１の曲線部３１１の左右両端部を通るが、耳糸供給用ガイド体２６と耳糸Ｔ１，Ｔ２との接触が回避される。即ち、経路差吸収用糸ガイド３１は耳糸供給用ガイド体２６と耳糸Ｔ１，Ｔ２との接触を防止する。
【００２６】
図１の最大開口状態では糸ガイド孔２６１，２６２から織前Ｗ１に至る耳糸Ｔ１，Ｔ２の経路が最長であり、図２の閉口状態では糸ガイド孔２６１，２６２から織前Ｗ１に至る耳糸Ｔ１，Ｔ２の経路が最小となる。閉口状態における糸経路は、経路差吸収用糸ガイド３１の存在によって糸ガイド孔２６１，２６２と共通経路１９１との間での屈曲が最大開口状態のときよりも大きくなる。即ち、経路差吸収用糸ガイド３１は各耳糸Ｔ１，Ｔ２の経路差を少なくすることに寄与する。
【００２７】
次に、図７の第２の実施の形態を説明する。第１の実施の形態と同じ構成部には同じ符号が付してある。
この実施の形態では、支軸１９の側板１４側の端部が側板１４から計って耳糸供給用ガイド体２６の最上位位置よりも上にあり、耳糸供給用ガイド体２６と耳糸Ｔ１，Ｔ２との接触防止が図られている。
【００２８】
次に、図８の第３の実施の形態を説明する。第１の実施の形態と同じ構成部には同じ符号が付してある。
この実施の形態では、支軸１９の側板１４側の端部の導入口１９２が略楕円形状にしてある。最大開口時には導入口１９２の長軸方向が耳糸開口用ガイド体２５の支軸２２側を向くようにしてあり、最小開口時には導入口１９２の短軸方向が耳糸開口用ガイド体２５の支軸２２側を向くようにしてある。導入口１９２のこのような形状は各耳糸Ｔ１，Ｔ２の経路差を少なくすることに寄与する。
【００２９】
次に、図９及び図１０の第４の実施の形態を説明する。第１の実施の形態と同じ構成部には同じ符号が付してある。
この実施の形態では、駆動歯車１２が耳糸供給用歯車２４に噛合しており、耳糸開口用歯車２１は耳糸供給用歯車２４の前側に配置されている。このような配置構成は耳糸Ｔ１，Ｔ２の最大開口角θを大きくする上で有効である。最大開口角θの増大は緯糸の緯入れを行い易くする。
【００３０】
本発明では以下のような実施の形態も可能である。
（１）耳糸開口用歯車２１を支軸１９に対して相対回転可能とすると共に、耳糸供給用歯車２４を支軸２２に対して相対回転可能とすること。
（２）耳糸開口用歯車２１及び耳糸供給用歯車２４を傘歯車とし、耳糸開口用ガイド体２５の回転中心軸線Ｌ２と耳糸供給用ガイド体２６の回転中心軸線Ｌ３とが交差するようにすること。
（３）耳糸供給用回転体及び耳糸開口用回転体の一方の回転を無端状ベルトあるいは無端状チェーンを介して他方へ伝達すること。
（４）前記（３）項において、耳糸供給用回転体の回転中心軸線と耳糸開口用回転体の回転中心軸線とを平行とすると共に、両回転体を同一方向へ回転させ、耳糸供給用回転体の一対の糸ガイド孔及び耳糸開口用回転体の一対の糸ガイド孔を両回転体の同じ側面側に配置すること。
【００３１】
前記した実施の形態から把握できる請求項以外の発明について以下にその効果と共に記載する。
（１）請求項１乃至請求項３のいずれか１項において、前記耳糸供給用回転体側の一対の糸ガイド孔を有する耳糸供給用ガイド体を備えた前記耳糸供給用回転体を構成し、前記耳糸供給用ガイド体は前記耳糸供給用回転体の回転中心軸線に関して回転対称形状とし、前記耳糸供給用ガイド体は前記耳糸供給用回転体の回転中心軸線及び前記耳糸供給用回転体側の一対の糸ガイド孔を通る平面に関して非対称形状とし、前記耳糸供給用ガイド体上に始発ガイド体を設けると共に、始発ガイド体に始発糸ガイド部を設け、前記始発糸ガイド部から前記耳糸供給用回転体側の一対の糸ガイド孔までの各糸経路を最短経路とした織機における耳形成装置。
【００３２】
このような耳糸供給用ガイド体の形状は、糸ガイド孔への糸通しを容易にする。
（２）請求項１乃至請求項３のいずれか１項において、前記耳糸開口用回転体側の一対の糸ガイド孔を有する耳糸開口用ガイド体を備えた前記耳糸開口用回転体を構成し、前記耳糸開口用ガイド体は前記耳糸供給用回転体の回転中心軸線に関して回転対称形状とし、前記耳糸開口用糸ガイド体は前記耳糸供給用回転体の回転中心軸線及び前記耳糸開口用回転体側の一対の糸ガイド孔を通る平面に関して非対称形状とし、前記共通経路から前記一対の糸ガイド孔までの各糸経路を最短経路とした織機における耳形成装置。
【００３３】
このような耳糸開口用ガイド体の形状は、糸ガイド孔への糸通しを容易にする。
（３）前記（１）項において、前記耳糸供給用ガイド体と前記共通経路との間で糸経路の変位範囲にわたって経路差吸収用の経路差吸収用糸ガイドを配置した織機における耳形成装置。
【００３４】
耳糸開口用回転体の回転中心軸線上の共通経路は、各耳糸の経路差を少なくすることに寄与するが、経路差吸収用糸ガイドも各耳糸の経路差を少なくすることに寄与する
【００３５】
【発明の効果】
以上詳述したように本発明では、耳糸開口用回転体を貫通するように前記耳糸開口用回転体の回転中心軸線上に配置される支軸内に第１及び第２の糸経路を設けたので、耳糸供給用回転体及び耳糸開口用回転体を一方向にのみ同期回転させる耳形成装置における部品点数を減らし得るという優れた効果を奏する。
【図面の簡単な説明】
【図１】第１の実施の形態を示す一部破断外側面図。
【図２】閉口状態を示す一部破断内側面図。
【図３】閉口状態を示す背面図。
【図４】最大開口状態を示す底面図。
【図５】一部省略斜視図。
【図６】（ａ）は最大開口状態を示す略体側面図。（ｂ）は最大開口状態と閉口状態との中間状態を示す略体側面図。（ｃ）は閉口状態を示す略体側面図。（ｄ）は最大開口状態と閉口状態との中間状態を示す略体側面図。（ｅ）は最大開口状態を示す略体側面図。
【図７】第２の実施の形態を示す背面図。
【図８】第３の実施の形態を示す外側面図。
【図９】第４の実施の形態を示す外側面図。
【図１０】内側面図。
【符号の説明】
１９…耳糸開口用回転体を構成する支軸、１９１…共通経路、２１…耳糸開口用回転体側の歯車部となる耳糸開口用歯車、２２…耳糸供給用回転体を構成する支軸、２４…耳糸供給用回転体側の歯車部となる耳糸供給用歯車、２５…耳糸開口用回転体を構成する耳糸開口用ガイド体、２５１，２５２…耳糸開口用回転体側の糸ガイド孔、２６…耳糸供給用回転体を構成する耳糸供給用ガイド体、２６１，２６２…耳糸供給用回転体側の糸ガイド孔、２７，２８…ボビン、２９，３０…始発ガイド体となる張力付与器、２９１，３０１…始発糸ガイド部となる糸ガイド孔、３１…経路差吸収用糸ガイド、Ｔ１，Ｔ２…耳糸、Ｌ２，Ｌ３…回転中心軸線。[0001]
BACKGROUND OF THE INVENTION
The present invention opens and closes an ear thread by synchronously rotating an ear thread supplying rotating body that holds an ear thread supplying bobbin and an ear thread opening rotating body that forms an opening of the ear thread in only one direction. The present invention relates to an ear forming device in a loom.
[0002]
[Prior art]
In the muffle ear forming apparatus disclosed in Japanese Patent Laid-Open No. 3-97944, a pair of relay gears and a pair of planetary gears are rotatably supported on the side surfaces of a support gear having a rotation center on the same axis as a fixed sun gear. Has been. The relay gear meshes with both the sun gear and the planetary gear. When the relay gear meshes with the sun gear while rotating around the circumference by the rotation of the support gear, the planetary gear rotates once in the reverse direction on the support gear. A bobbin holder is attached to the shaft of the planetary gear that revolves around the sun gear, and the ear thread of the bobbin for the muzzle ear supported by the bobbin holder is pulled out from the bobbin by the thread tension. The ear forming device using the planetary gear mechanism has a drawback that the number of parts increases and the structure becomes complicated.
[0003]
An ear forming device that does not use a planetary gear mechanism is disclosed in Japanese Patent Laid-Open No. 56-53234. A pair of guide holes are formed in the peripheral part which is separated from each other in the same diameter line direction from the rotation center of the ear thread opening rotary disk, and the pair of ears passed through both guide holes is formed in the ear thread opening rotary disk. The yarn performs opening and closing movements by the rotation of the ear thread opening turntable. The pair of ear threads is supplied from a pair of bobbins mounted on an ear thread supply bobbin holding rotating disk. The ear thread supply bobbin holding turntable is formed with a pair of guide holes at peripheral portions separated from each other in the same diameter line direction from the rotation center of the ear thread supply bobbin holding turntable. The ear threads fed out from both bobbins pass through a pair of guide holes on the ear thread supply bobbin holding rotating disk side and then through a pair of guide holes on the ear thread opening rotating disk side. The rotation center line of the ear thread supply bobbin holding rotating disk and the rotation center line of the ear thread opening rotating disk are parallel to each other, and both rotating disks rotate in the same direction. When only the ear thread opening rotary disk rotates, the pair of ear threads twists between the ear thread supply bobbin holding rotary disk and the ear thread opening rotary disk. Therefore, the twist generation is prevented by rotating the ear thread supply bobbin holding rotating disk in the same direction as the ear thread opening rotating disk.
[0004]
[Problems to be solved by the invention]
In the apparatus disclosed in Japanese Patent Laid-Open No. 56-53234, the rotating disk cannot be supported by the central axis because the ear threads cross on the side surface of the rotating disk. Therefore, a configuration is adopted in which a plurality of rotating rollers are brought into contact with the peripheral surface of the rotating disk and the rotating disk is supported by the plurality of rotating rollers. However, with such a support configuration, the number of parts cannot be reduced as compared with an ear forming device using a planetary gear mechanism.
[0005]
The present invention reduces the number of parts in an ear forming device that synchronously rotates the ear thread supplying rotator and the ear thread opening rotator in only one direction, as in the device disclosed in Japanese Patent Laid-Open No. 56-53234. With the goal.
[0006]
[Means for Solving the Problems]
For this purpose, the present invention provides an ear thread supplying rotary body that holds a ear thread supplying bobbin and has a pair of thread guide holes provided so as to be separated from each other in the opposite directions from the rotation center axis. One ear thread opening rotating body having a pair of thread guide holes provided so as to be spaced apart from each other in the opposite directions from the rotation center axis line through which the ear thread supplied from the pair of thread guide holes of the rotating body is inserted. In the invention, the pair of yarn guides on the ear thread opening rotator side from one of the pair of thread guide holes on the ear thread supply rotator side is provided. A first yarn path leading to one of the holes, and the other of the pair of yarn guide holes on the ear thread opening rotor from the other of the pair of thread guide holes on the ear thread supply rotor With a second thread path leading to The first and second thread paths are provided in a support shaft that is arranged on a rotational center axis of the ear thread opening rotator so as to pass through the ear thread opening rotator. .
[0007]
In the configuration in which the first and second thread paths are provided on the rotation center axis of the ear thread opening rotator so as to penetrate the ear thread opening rotator, the ear thread opening rotator is arranged on the rotation center axis. It can be supported on the line. Such a support structure is effective in reducing the number of parts of the ear forming device.
[0009]
請 In Motomeko 2 of the invention, Oite to claim 1, wherein the parallel to the rotation center of the selvage shedding rotator and the rotation center axis of the selvage feeding rotary member, the selvage feeding rotary member And a pair of thread guide holes of the ear thread opening rotator are disposed on both sides of the ear thread supplying rotator and a side plate supporting a supporting shaft of the ear thread opening rotator, The rotating body and the ear thread opening rotating body were rotated in opposite directions.
[0010]
The configuration in which the ear thread opening rotator and the ear thread supply rotator are rotated in the opposite directions are the rotation region of the thread guide hole on the ear thread opening rotator side and the thread guide hole on the ear thread supply rotator side. It is possible to distribute the circumferential region to both sides in the direction of the rotation center axis of the ear thread opening rotator with the support shaft interposed therebetween. Such distribution facilitates replacement of the ear thread supply bobbins.
[0011]
According to a third aspect of the present invention, in the second aspect , the ear thread supplying rotator includes a gear portion, and is fixed to an end portion of a support shaft of the ear thread supplying rotator so as to be integrated with the gear portion. The ear thread opening rotating body includes a gear portion, and is fixed to an end of a support shaft of the ear thread opening rotating body so as to be integrated with the gear portion. And the gear portion of the ear thread supply rotating body and the gear portion of the ear thread opening rotating body have the same shape and the same size and mesh with each other .
[0012]
The rotational force of one of the ear thread supplying rotator and the ear thread opening rotator is transmitted to the other through both gear portions, and both rotators rotate in opposite directions. The configuration in which the rotational force of one of the ear thread supplying rotator and the ear thread opening rotator is transmitted to the other through both gear portions provides simplification of the mechanism.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
[0014]
As shown in FIG. 1, a drive shaft 11 is rotatably supported on a side frame (not shown) of the loom, and a drive gear 12 is fixed to the drive shaft 11. The drive shaft 11 obtains a driving force from a loom drive motor (not shown). The drive shaft 11 rotates in the direction of the arrow R1 shown in FIG.
[0015]
As shown in FIG. 3, a support frame 13 is fixed to the side frame. The support frame 13 includes a pair of side plates 14, 15, a plurality of isolation blocks 16 interposed between the side plates 14, 15, bolts 17 penetrating the side plates 14, 15 and the isolation block 16, and screws to the bolts 17. It consists of a worn nut 18. The side plates 14 and 15 are pressed against the isolation block 16 by the tightening action of the bolts 17 and nuts 18, and the isolation block 16 isolates the side plates 14 and 15 from each other at a predetermined interval.
[0016]
A cylindrical support shaft 19 is rotatably supported on the side plates 14 and 15 via a radial belling 20, and an ear thread opening gear 21 is fixed to the support shaft 19 between the side plates 14 and 15. ing. A support shaft 22 is rotatably supported on the side plates 14 and 15 via a radial belling 23, and an ear thread supply gear 24 is fixed to the support shaft 22 between the side plates 14 and 15. The ear thread opening gear 21 and the ear thread supplying gear 24 have the same shape and size. As shown in FIG. 5, both the gears 21 and 24 mesh with each other, and the ear thread opening gear 21 meshes with the drive gear 12. As the drive shaft 11 rotates, the ear thread opening gear 21 rotates in the direction of arrow R2 shown in FIG. 2, and the ear thread supply gear 24 rotates in the direction of arrow R3 shown in FIG.
[0017]
On the inner side of the side plate 15 (left side of the side plate 15 in FIG. 3), an ear thread opening guide body 25 is fixed to the end of the support shaft 19. Thread guide holes 251 and 252 are formed at both ends of the ear thread opening guide body 25. The yarn guide holes 251 and 252 are located at a distance from the rotation center axis L2 of the ear yarn opening gear 21 by an equal distance in the opposite direction. The ear thread opening guide body 25 rotates integrally with the ear thread opening gear 21. The ear thread opening gear 21, the support shaft 19, and the ear thread opening guide body 25 constitute an ear thread opening rotating body.
[0018]
As shown in FIG. 2, the ear thread opening guide body 25 is formed with twisted portions 253 and 254. The presence of the twisted portions 253 and 254 makes the ear thread opening guide body 25 asymmetrical with respect to a plane passing through the rotation center axis L2 and the thread guide holes 251 and 252. The ear thread opening guide body 25 has a rotationally symmetric shape that coincides with each rotation of 180 ° about the rotation center axis L2.
[0019]
On the outer side of the side plate 14 (on the right side of the side plate 14 in FIG. 3), an ear thread supply guide body 26 is fastened to the end of the support shaft 22. Thread guide holes 261 and 262 are formed at both ends of the ear thread supply guide body 26. The yarn guide holes 261 and 262 are located at an equal distance from the rotation center axis L3 of the ear yarn supplying gear 24 in the opposite directions. The ear thread supply guide body 26 rotates integrally with the ear thread supply gear 24. The ear thread supplying gear 24, the support shaft 22, and the ear thread supplying guide body 26 constitute an ear thread supplying rotary body.
[0020]
As shown in FIG. 1, the ear thread supply guide body 26 is formed with turn portions 263 and 264. The presence of the twisted portions 263 and 264 makes the ear thread supply guide body 26 asymmetrical with respect to a plane passing through the rotation center axis L3 and the thread guide holes 261 and 262. The ear thread supply guide body 26 has a rotationally symmetric shape that coincides with each rotation of 180 ° about the rotation center axis L3.
[0021]
The ear thread supply guide body 26 is equipped with a pair of ear thread supply bobbins 27 and 28. The ear threads T1 and T2 drawn from the bobbins 27 and 28 are passed through the thread guide holes 291 and 301 of the tension applicators 29 and 30, and are given tension. The ear thread T1 passed through the thread guide hole 291 is passed through the thread guide hole 261 from the back side of the ear thread supply guide body 26 to the front side. The ear thread T2 passed through the thread guide hole 301 is passed through the thread guide hole 262 from the back side of the ear thread supply guide body 26 to the front side. The yarn path from the yarn guide holes 291 and 301 to the yarn guide holes 261 and 262 is the shortest path.
[0022]
The ear threads T1 and T2 passed through the thread guide holes 261 and 262 are passed through the outer side of the side plate 14 into the cylinder of the support shaft 19. The inside of the cylinder of the support shaft 19 becomes a common path 191 for both ear threads T1, T2. The ear thread T1 passed through the common path 191 is passed through the thread guide hole 251 from the back side to the front side of the ear thread opening guide body 25 along the inner side of the side plate 15. The ear thread T2 passed through the common path 191 is passed through the thread guide hole 252 from the back side to the front side of the ear thread opening guide body 25 along the inner side of the side plate 15. The yarn path from the common path 191 to the yarn guide holes 251 and 252 is the shortest path.
[0023]
As shown in FIG. 1, the first thread path of the ear thread T1 from the thread guide hole 261 of the ear thread supply guide body 26 to the thread guide hole 251 on the ear thread opening guide body 25 side is the thread guide hole 251. The portion between the woven fabric W1 and the woven fabric W1 is displaced over the range E1 as the ear thread opening guide body 25 rotates. The second thread path of the ear thread T2 from the thread guide hole 262 on the ear thread supply guide body 26 side to the thread guide hole 252 on the ear thread opening guide body 25 side is between the thread guide hole 251 and the pre-weaving W1. The intermediate portion is displaced over the range E1 as the ear thread opening guide body 25 rotates. That is, the ear threads T1 and T2 passed through the thread guide holes 251 and 252 are opened and closed in accordance with the rotation of the ear thread opening gear 21 between the yarn guide holes 251 and 252 and the pre-weaving W1 of the woven fabric W. Do exercise.
[0024]
As shown in FIG. 4, a path difference absorbing yarn guide 31 is erected on the side plate 14. The path difference absorbing yarn guide 31 has a mountain shape, and the curved portion 311 of the path difference absorbing thread guide 31 is an arc. The uppermost position measured from the side plate 14 of the path difference absorbing thread guide 31 is higher than the uppermost position of the ear thread supply guide body 26 (that is, the thread guide holes 261 and 262 of the ear thread supply guide body 26). . As shown in FIG. 1, the first thread path of the ear thread T1 from the thread guide hole 261 on the ear thread supply guide body 26 side to the thread guide hole 251 on the ear thread opening guide body 25 side is the thread guide hole. A portion between the H.261 and the common path 191 is displaced over a range E <b> 2 as the ear thread supply guide body 26 rotates. The second thread path of the ear thread T2 from the thread guide hole 262 on the ear thread supply guide body 26 side to the thread guide hole 252 on the ear thread opening guide body 25 side is the thread guide hole 262 and the common path 191. The intermediate portion is displaced over the range E2 as the ear thread supply guide body 26 rotates. The path difference absorbing thread guide 31 is disposed between the support shaft 19 and the ear thread supply guide body 26 over the displacement range E2 of the thread path of the ear threads T1, T2 as the ear thread supply guide body 26 rotates. ing.
[0025]
6A and 6E show the maximum open state, and FIG. 6C shows the closed state. 6B and 6D show an intermediate state between the maximum opening state and the closing state.
The following effects can be obtained in the first embodiment.
(1-1) The first thread path and the second thread path are the rotation center axis lines of the ear thread opening rotating body including the ear thread opening gear 21, the support shaft 19, and the ear thread opening guide body 25. The flow is diverted from the common path 191 penetrating L2 and reaches the yarn guide holes 251 and 252. Accordingly, the first thread path and the second thread path intersect with the rotation center axis L2 only on the front side of the ear thread opening guide body 25 as the ear thread opening guide body 25 rotates, and the first thread path and the second thread path intersect with each other. The second thread path and the second thread path do not cross the rotation center axis L2 on the back side of the ear thread opening guide body 25. That is, the configuration in which the common path 191 is provided on the rotation center axis L2 so as to penetrate the ear thread opening rotator enables the ear thread opening rotator to be supported on the rotation center axis L2. Such a support structure is effective in reducing the number of parts of the ear forming device.
(1-2) The support shaft 19 is optimal as a position where the common path 191 is formed.
(1-3) The first thread path and the second thread path merge from the thread guide holes 261 and 262 on the ear thread supply guide body 26 side to the common path 191. Accordingly, the first yarn path and the second yarn path intersect with the rotation center axis L3 only on the front side of the ear yarn supply guide body 26 as the ear yarn supply guide body 26 rotates, and the first yarn path and the second yarn path intersect with each other. The second thread path and the second thread path do not cross the rotation center axis L3 on the back side of the ear thread supply guide body 26. That is, the configuration in which the common path 191 is provided on the rotation center axis L2 so as to penetrate the ear thread opening rotator enables the ear thread supply rotator to be supported on the rotation center axis L3. Such a support structure is effective in reducing the number of parts of the ear forming device.
(1-4) When the ear thread opening rotator and the ear thread supply rotator provided with the common path 191 are rotated in opposite directions, the ear thread opening guide body 25 and the ear thread supply guide body. 26 to both sides of the support frame 13. In other words, the rotation region for the ear yarn opening 251 and 252 on the side of the ear thread opening rotator and the rotation region of the yarn guide hole 261 and 262 on the side of the ear thread supplying rotator sandwich the common path 191. It must be distributed to both sides in the direction of the rotation center axis L2 on the body side. This is to eliminate twisting of the ear threads T1 and T2 between the common path 191 and the ear thread supply guide body 26. Therefore, the ear thread opening guide body 25 faces the inside of the side frame, and the ear thread supply guide body 26 faces the outside of the side frame. Such distribution facilitates replacement of the ear thread supply bobbins 27 and 28 attached to the ear thread supply guide body 26.
(1-5) The rotational force of the ear thread opening rotator is transmitted to the ear thread supplying rotator via the ear thread opening gear 21 serving as the gear part and the ear thread supplying gear 24 serving as the gear part. The rotating bodies rotate in opposite directions. The configuration in which the rotation of the ear thread opening rotator is directly transmitted to the ear thread supply rotator provides simplification of the mechanism, and the number of parts of the ear forming device can be reduced.
(1-6) The tension applicators 29 and 30 serve as initial guide bodies that first regulate the thread paths of the ear threads T1 and T2 drawn from the bobbins 27 and 28. The yarn guide holes 291 and 301 of the tension applicators 29 and 30 serve as initial yarn guide portions that first regulate the yarn paths of the ear threads T1 and T2 drawn from the bobbins 27 and 28. The path of the ear threads T1 and T2 drawn out from the bobbins 27 and 28 attached to the front side of the ear thread supply guide body 26 passes through the thread guide holes 261 and 262 from the back side of the ear thread supply guide body 26, and the ear threads. It is necessary to go out to the front side of the supply guide body 26. The presence of the twisted portions 263 and 264 minimizes the yarn path from the yarn guide holes 291 and 301 to the yarn guide holes 261 and 262. Without the twisted portions 263 and 264, the yarn path from the yarn guide holes 291 and 301 to the yarn guide holes 261 and 262 is not the shortest path, and path variation is likely to occur. Such path variations tend to cause tension variations. A configuration in which the yarn path from the yarn guide holes 291 and 301 to the yarn guide holes 261 and 262 is the shortest path is effective in preventing path fluctuation.
(1-7) The path of the ear threads T1 and T2 diverted from the common path 191 passes from the back side of the ear thread opening guide body 25 through the thread guide holes 251 and 252 to the front side of the ear thread opening guide body 25. There is a need. The presence of the twisted portions 253 and 254 shortens the yarn path from the common path 191 to the yarn guide holes 251 and 252. Without the twisted portions 253 and 254, the yarn path from the common path 191 to the yarn guide holes 251 and 252 is not the shortest path, and path fluctuations are likely to occur. Such path variations tend to cause tension variations. A configuration in which the yarn path from the common path 191 to the yarn guide holes 251 and 252 is the shortest path is effective in preventing path fluctuation.
(1-8) A large path difference between the first thread path and the second thread path tends to cause tension fluctuation, and the tension fluctuation inhibits good ear formation. When the maximum opening angle θ of the ear threads T1, T2 shown in FIG. 1 is 27 °, the revolution radius of the yarn guide holes 251, 252, 261, 262 is 70 mm, and the distance from the common path 191 to the pre-weaving W1 is 300 mm, In the present embodiment, the maximum path of the yarn path is about 605 mm, and the minimum path is about 580 mm. This path difference is (605 mm−580 mm) / 605 mm≈4.13%. In the apparatus disclosed in Japanese Patent Laid-Open No. 56-53234, the maximum path of the yarn path under the same conditions as the present embodiment is about 464 mm and the minimum path is about 433 mm. This path difference is (464 mm-433 mm) / 464 mm≈6.8%. This difference in path difference is due to the presence or absence of the common path 191. The common path 191 on the rotation center axis L2 of the ear thread opening rotator 25 reduces the path difference between the ear threads T1 and T2. Contribute to.
(1-9) When the ear threads T1 and T2 are closed, the ear threads T1 and T2 between the thread guide holes 261 and 262 and the common path 191 pass through the left and right centers of the curved portion 311 of the path difference absorbing thread guide 31, Contact between the ear thread supply guide body 26 and the ear threads T1, T2 is avoided. When the ear threads T1 and T2 are fully opened, the ear threads T1 and T2 between the thread guide holes 261 and 262 and the common path 191 pass through both left and right ends of the curved portion 311 of the path difference absorbing thread guide 31. Contact between the supply guide body 26 and the ear threads T1, T2 is avoided. That is, the path difference absorbing thread guide 31 prevents the ear thread supplying guide body 26 from contacting the ear threads T1, T2.
[0026]
In the maximum opening state of FIG. 1, the path of the ear threads T1, T2 from the yarn guide holes 261, 262 to the pre-weaving W1 is the longest, and in the closed state of FIG. 2, the ears extending from the yarn guide holes 261, 262 to the pre-weaving W1. The path of the threads T1, T2 is minimized. The yarn path in the closed state is larger than that in the maximum open state due to the presence of the path difference absorbing thread guide 31 than in the maximum open state between the thread guide holes 261 and 262 and the common path 191. That is, the path difference absorbing yarn guide 31 contributes to reducing the path difference between the ear threads T1 and T2.
[0027]
Next, a second embodiment of FIG. 7 will be described. The same components as those in the first embodiment are denoted by the same reference numerals.
In this embodiment, the end of the support shaft 19 on the side plate 14 side is above the uppermost position of the ear thread supply guide body 26 as measured from the side plate 14, and the ear thread supply guide body 26 and the ear thread T1. , T2 is prevented from contacting.
[0028]
Next, a third embodiment of FIG. 8 will be described. The same components as those in the first embodiment are denoted by the same reference numerals.
In this embodiment, the introduction port 192 at the end of the support shaft 19 on the side plate 14 side has a substantially elliptical shape. The long axis direction of the introduction port 192 is directed toward the support shaft 22 side of the ear thread opening guide body 25 at the maximum opening, and the short axis direction of the introduction port 192 is supported by the ear thread opening guide body 25 at the minimum opening. It faces the shaft 22 side. Such a shape of the inlet 192 contributes to reducing the path difference between the ear threads T1 and T2.
[0029]
Next, a fourth embodiment shown in FIGS. 9 and 10 will be described. The same components as those in the first embodiment are denoted by the same reference numerals.
In this embodiment, the drive gear 12 meshes with the ear thread supply gear 24, and the ear thread opening gear 21 is arranged on the front side of the ear thread supply gear 24. Such an arrangement is effective in increasing the maximum opening angle θ of the ear threads T1, T2. Increasing the maximum opening angle θ facilitates the weft insertion.
[0030]
In the present invention, the following embodiments are also possible.
(1) The ear thread opening gear 21 can be rotated relative to the support shaft 19, and the ear thread supply gear 24 can be rotated relative to the support shaft 22.
(2) The ear thread opening gear 21 and the ear thread supplying gear 24 are bevel gears, and the rotation center axis L2 of the ear thread opening guide body 25 and the rotation center axis L3 of the ear thread supplying guide body 26 intersect. To do so.
(3) The rotation of one of the ear thread supplying rotator and the ear thread opening rotator is transmitted to the other via an endless belt or an endless chain.
(4) In the above item (3), the rotation center axis of the ear thread supplying rotator and the rotation center axis of the ear thread opening rotator are made parallel to each other, and both the rotators are rotated in the same direction. The pair of thread guide holes of the supplying rotator and the pair of thread guide holes of the ear thread opening rotator are disposed on the same side surface of both rotators.
[0031]
Inventions other than the claims that can be grasped from the above-described embodiment will be described together with the effects thereof.
(1) The ear thread supplying rotator including the ear thread supplying guide body having a pair of thread guide holes on the ear thread supplying rotator side according to any one of claims 1 to 3. The ear thread supply guide body has a rotationally symmetric shape with respect to the rotation center axis of the ear thread supply rotary body, and the ear thread supply guide body includes the rotation center axis of the ear thread supply rotary body and the ear thread. An asymmetric shape with respect to a plane passing through the pair of yarn guide holes on the supply rotating body side, and an initial guide body is provided on the ear yarn supply guide body, and an initial yarn guide portion is provided on the initial guide body, and the initial yarn guide portion An ear forming device in a loom having each yarn path from the ear thread supply rotating body side to the pair of thread guide holes as a shortest path.
[0032]
Such a shape of the ear thread supply guide body facilitates threading into the thread guide hole.
(2) The ear thread opening rotating body according to any one of claims 1 to 3 , comprising an ear thread opening guide body having a pair of thread guide holes on the ear thread opening rotating body side. The ear thread opening guide body has a rotationally symmetric shape with respect to the rotational center axis of the ear thread supplying rotator, and the ear thread opening thread guide body includes the rotational center axis of the ear thread supplying rotator and the ear threads. An ear forming apparatus in a loom having an asymmetric shape with respect to a plane passing through a pair of yarn guide holes on the yarn opening rotating body side, and having each yarn path from the common path to the pair of thread guide holes as a shortest path.
[0033]
Such a shape of the ear thread opening guide body facilitates threading into the thread guide hole.
(3) The ear forming device in the loom according to the item (1), wherein a path difference absorbing thread guide for path difference absorption is disposed between the ear thread supplying guide body and the common path over a displacement range of the thread path. .
[0034]
The common path on the rotation center axis of the ear thread opening rotator contributes to reducing the path difference of each ear thread, but the path difference absorbing thread guide also contributes to reducing the path difference of each ear thread. [0035]
【The invention's effect】
As described above in detail, in the present invention, the first and second thread paths are provided in the support shaft arranged on the rotation center axis of the ear thread opening rotator so as to penetrate the ear thread opening rotator. Since it is provided, it is possible to reduce the number of parts in the ear forming device that synchronously rotates the ear thread supplying rotator and the ear thread opening rotator only in one direction.
[Brief description of the drawings]
FIG. 1 is a partially broken outer side view showing a first embodiment.
FIG. 2 is a partially broken inner side view showing a closed state.
FIG. 3 is a rear view showing a closed state.
FIG. 4 is a bottom view showing a maximum opening state.
FIG. 5 is a partially omitted perspective view.
FIG. 6A is a schematic side view showing a maximum opening state. (B) is a schematic side view showing an intermediate state between a maximum open state and a closed state. (C) is a schematic side view showing a closed state. (D) is a schematic side view showing an intermediate state between the maximum open state and the closed state. (E) is a schematic side view showing the maximum opening state.
FIG. 7 is a rear view showing the second embodiment.
FIG. 8 is an outer side view showing a third embodiment.
FIG. 9 is an outer side view showing a fourth embodiment.
FIG. 10 is an inner side view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 19 ... The spindle which comprises the rotator for ear thread opening, 191 ... Common path | route, 21 ... The gear for ear thread opening used as the gear part by the side of the rotator for ear thread opening, 22 ... The support which comprises the rotator for ear thread supply Axis 24: Ear thread supply gear serving as a gear portion on the ear thread supply rotator side 25: Ear thread opening guide body constituting the ear thread opening rotator 251, 252 ... Ear thread opening rotor side Thread guide hole, 26... Ear thread supply guide body constituting the ear thread supply rotator, 261, 262... Thread guide hole on the ear thread supply rotator side, 27, 28... Bobbin, 29, 30. Tension applicator 291, 301... Yarn guide hole serving as a starting yarn guide portion, 31... Path difference absorbing yarn guide, T 1, T 2, ear yarn, L 2, L 3.

Claims

耳糸供給用ボビンを保持すると共に、回転中心軸線から互いに逆方向に離れるように設けられた一対の糸ガイド孔を有する耳糸供給用回転体と、前記耳糸供給用回転体の一対の糸ガイド孔から供給される耳糸がそれぞれ挿通される回転中心軸線から互いに逆方向に離れるように設けられた一対の糸ガイド孔を有する耳糸開口用回転体とをそれぞれ一方向にのみ同期回転させる耳形成装置において、
前記耳糸供給用回転体側の一対の糸ガイド孔のうちの一方から前記耳糸開口用回転体側の一対の糸ガイド孔のうちの一方に至る第１の糸経路と、前記耳糸供給用回転体側の一対の糸ガイド孔のうちの他方から前記耳糸開口用回転体側の一対の糸ガイド孔のうちの他方に至る第２の糸経路とを備え、
前記第１及び第２の糸経路が前記耳糸開口用回転体を貫通するように前記耳糸開口用回転体の回転中心軸線上に配置される支軸内に設けられる織機における耳形成装置。An ear thread supplying rotator that holds a bobbin for supplying ear threads and has a pair of thread guide holes provided so as to be separated from the rotation center axis in opposite directions, and a pair of threads of the rotators for supplying ear threads The ear thread opening rotator having a pair of thread guide holes provided so as to be separated from the rotation center axis line through which the ear thread supplied from the guide hole is inserted is rotated in only one direction. In the ear forming device,
A first thread path extending from one of the pair of thread guide holes on the ear thread supply rotator side to one of the pair of thread guide holes on the ear thread opening rotator side; and the ear thread supply rotation A second thread path extending from the other of the pair of thread guide holes on the body side to the other of the pair of thread guide holes on the ear thread opening rotating body side,
An ear forming device in a loom provided in a support shaft disposed on a rotation center axis of the ear thread opening rotator so that the first and second thread paths penetrate the ear thread opening rotator.

前記耳糸供給用回転体の回転中心軸線と前記耳糸開口用回転体の回転中心軸線とは平行であり、前記耳糸供給用回転体及び前記耳糸開口用回転体の一対の糸ガイド孔は前記耳糸供給用回転体及び前記耳糸開口用回転体の支軸を支持する側板を挟んで両側に配置され、前記耳糸供給用回転体と前記耳糸開口用回転体とは互いに逆方向に回転する請求項１に記載の織機における耳形成装置。 It is parallel to the rotation center of the selvage shedding rotator and the rotation center axis of the selvage feeding rotary body, a pair of yarn guide hole of the selvage feeding rotary member and the selvage shedding rotator Are disposed on both sides of a side plate that supports a supporting shaft of the ear thread supplying rotator and the ear thread opening rotator, and the ear thread supplying rotator and the ear thread opening rotator are opposite to each other. The ear forming device in the loom according to claim 1, wherein the ear forming device rotates in a direction .

前記耳糸供給用回転体は歯車部を備えるとともに、前記耳糸供給用回転体の支軸の端部に止着されて前記歯車部と一体的に回転する耳糸供給用ガイド体を備え、前記耳糸開口用回転体は歯車部を備えるとともに、前記耳糸開口用回転体の支軸の端部に止着されて前記歯車部と一体的に回転する耳糸開口用ガイド体を備えており、前記耳糸供給用回転体の歯車部と前記耳糸開口用回転体の歯車部とは同形同大で互いに噛合する請求項２に記載の織機における耳形成装置。 The ear thread supplying rotator includes a gear part, and includes an ear thread supplying guide body that is fixed to an end of a support shaft of the ear thread supplying rotator and rotates integrally with the gear part, The ear thread opening rotator includes a gear part, and an ear thread opening guide body fixed to an end of a support shaft of the ear thread opening rotator and rotating integrally with the gear part. cage, the ear forming apparatus in looms according to claim 2 which mesh with each other in the same shape and size and the gear portion of the selvage shedding rotator and gear portion of the selvage feeding rotary body.