JP2585981B2

JP2585981B2 - Method and apparatus for applying yarn tension for textile machinery

Info

Publication number: JP2585981B2
Application number: JP6517876A
Authority: JP
Inventors: 雅彦金原
Original assignee: Three D Composites Research Corp
Current assignee: Three D Composites Research Corp
Priority date: 1993-02-03
Filing date: 1994-02-03
Publication date: 1997-02-26
Anticipated expiration: 2012-02-26
Also published as: JPH08508088A

Description

【発明の詳細な説明】技術分野本発明は、繊維機械のための糸張力付与方法及びその
装置に関するものであり、特に、スクエアブレータ、マ
グナウィーブ、三次元ブレーダ等と呼ばれているような
三次元組紐を製造する繊維機械において有効に利用でき
る糸張力付与方法及びその装置に関するものである。Description: TECHNICAL FIELD The present invention relates to a method and an apparatus for applying a yarn tension to a textile machine, and in particular, to a tertiary cubic device such as a square breeder, a magna weave, or a three-dimensional braider. The present invention relates to a method and an apparatus for applying a yarn tension which can be effectively used in a textile machine for producing a braid.

背景技術特開平４−41756号公報に開示されているようなブレ
ード（組紐）方式の三次元織物用の機械、即ち、キャリ
ヤ移動面に配置した糸条のキャリヤをキャリヤ駆動機構
により同移動面内で所要の軌跡に沿って走行させ、その
キャリヤに保持させた糸条を互いに組織させて三次元織
物を製織するような織機においては、筬打ちにより糸条
の配向角を安定的に略均一化し、あるいはその配向角を
任意に制御するための配向角設定手段を設ける必要があ
る。BACKGROUND ART A blade (braid) type three-dimensional textile machine as disclosed in Japanese Patent Application Laid-Open No. 4-41756, that is, a carrier of a yarn arranged on a carrier moving surface is moved in the moving surface by a carrier driving mechanism. In a loom that runs along a required trajectory and organizes the yarns held by its carrier with each other to weave a three-dimensional woven fabric, the orientation angle of the yarns is stably made substantially uniform by beating. Or, it is necessary to provide an orientation angle setting means for arbitrarily controlling the orientation angle.

本発明者は、特願平４−180408号においても、その配
向角設定に有効な手段を提案している。ブレード方式の
三次元織機では、この種の配向角設定手段等を利用せず
に製織を進行させると、製織される織物の製織サイクル
毎の糸条の引き出し量が大きければ、配向角が小さい織
物が製織され、それが余り小さくなると実質的に三次元
織物と言えないものになる。The present inventor also proposes an effective means for setting the orientation angle in Japanese Patent Application No. 4-180408. In a blade type three-dimensional loom, if weaving is advanced without using this kind of orientation angle setting means, etc., if the amount of yarn pulled out in each weaving cycle of the woven fabric is large, the orientation angle of the woven fabric is small. Is woven, and when it is too small, it becomes virtually impossible to say a three-dimensional fabric.

一方、上記ブレード方式の三次元織機においては、特
開平２−178176号公報あるいは特公平４−47054号公報
に開示されているような糸張力付与装置を用いても、三
次元織物の配向角を上げることができる。しかし、配向
角の増加は糸張力付与装置からの糸引出し角の増加とな
り、ボビンが製織中の織物中心から遠ざかる場合は、そ
の遠ざかるためのボビンの移動により、製織のために消
費される糸長よりも多くの糸をボビンから引き出す必要
があり、またボビンが織物中心に近づく場合は、製織の
ために消費される分を差し引いても糸が余ってしまい、
ボビン側に引き戻す必要がある。そのため、以下に説明
するように、従来の糸張力付与装置では、それらに十分
に対応させることができない。On the other hand, in the blade type three-dimensional loom, even when using a yarn tension applying device as disclosed in JP-A-2-178176 or JP-B-4-47054, the orientation angle of the three-dimensional fabric can be reduced. Can be raised. However, an increase in the orientation angle results in an increase in the yarn pull-out angle from the yarn tension applying device. When the bobbin moves away from the center of the woven fabric during weaving, the movement of the bobbin to move the bobbin increases the yarn length consumed for weaving. It is necessary to pull out more yarn from the bobbin, and if the bobbin approaches the center of the fabric, the yarn will be surplus even if the amount consumed for weaving is subtracted,
It is necessary to pull back to the bobbin side. Therefore, as described below, the conventional yarn tension applying devices cannot sufficiently cope with them.

従来から知られている糸張力付与装置としては、図16
に模式的に示しているようなものが一般的である。FIG. 16 shows a conventionally known yarn tension applying device.
What is schematically shown in FIG.

同図の糸張力付与装置は、キャリヤ１の偏心位置に立
設した支持軸２に回転可能に支持されたボビン３に係合
爪を有するクラッチ４を設け、中央部を支点６としてキ
ャリヤ１上に揺動可能に支持させた揺動レバー５の先端
を、そのクラッチ４の係合爪に係合させることによりボ
ビン３の回転を拘束している。The yarn tension applying device shown in FIG. 1 is provided with a clutch 4 having an engagement claw on a bobbin 3 rotatably supported by a support shaft 2 erected at an eccentric position of the carrier 1, and a central portion serving as a fulcrum 6 on the carrier 1. The rotation of the bobbin 3 is restrained by engaging the tip of a swing lever 5 swingably supported by the clutch 4 with an engagement claw of the clutch 4.

ボビン３から解舒した糸７は、糸ガイド8,9,10を通し
て導出される。糸ガイド8,10はキャリヤ１上に固定的に
設けたものであり、糸ガイド９は、ガイド軸11に沿って
糸張力により張力スプリング12の付勢力に抗して摺動す
る摺動子13に設けたものである。この摺動子13は、張力
スプリング12が一定の付勢力で圧縮されたとき、揺動レ
バー５の一端に連結した接触子14に係合し、戻しスプリ
ング15の付勢力に抗して揺動レバー５によるボビン３の
拘束を解除するものである。The yarn 7 unwound from the bobbin 3 is led out through yarn guides 8, 9, 10. The thread guides 8 and 10 are fixedly provided on the carrier 1. The thread guide 9 is provided with a slider 13 which slides along a guide shaft 11 against the urging force of the tension spring 12 by the thread tension. It is provided in. When the tension spring 12 is compressed by a constant urging force, the slider 13 engages with the contact 14 connected to one end of the swing lever 5 and swings against the urging force of the return spring 15. This releases the restriction of the bobbin 3 by the lever 5.

したがって、ボビン３から導出されている糸７を引出
すとき、その糸に作用する力によって張力スプリング12
が一定量だけ圧縮されると、摺動子13が接触子14を押圧
してレバー５を傾動させ、その結果クラッチ４の係合爪
に対するレバー５の先端の係合が解除される、その結
果、ボビン３がクラッチ４の係合爪の１歯分だけ回転
し、それに伴って糸張力が若干低下するため、摺動子13
が張力スプリング12の付勢力で復帰すると共に、摺動レ
バー５が戻しスプリング15の付勢力により復帰し、再び
レバー５がクラッチ４に係合してボビン３の回転を拘束
する。Therefore, when the yarn 7 led out from the bobbin 3 is pulled out, the tension spring 12
Is compressed by a certain amount, the slider 13 presses the contact 14 to tilt the lever 5, and as a result, the engagement of the tip of the lever 5 with the engaging claw of the clutch 4 is released. , The bobbin 3 is rotated by one tooth of the engagement claw of the clutch 4 and the thread tension is slightly reduced accordingly.
Is returned by the urging force of the tension spring 12, the sliding lever 5 is returned by the urging force of the return spring 15, and the lever 5 is engaged with the clutch 4 again to restrict the rotation of the bobbin 3.

なお、上記張力スプリグ12に代えて、それと同様の付
勢力を糸７に作用させる重錘を用いることも一般的に知
られている。It is generally known that a weight that applies a similar urging force to the thread 7 is used instead of the tension sprig 12.

以上の従来例は、糸の引き出し角の大きな織物への対
応を可能にするものではあるが、いずれも糸の引き出し
時と引き戻し時の張力付与に同一の張力付与機構が作用
しているため、引き出し時と引き戻し時にほぼ同一の張
力が糸に作用するようになっている。但し、糸引出し時
には戻しスプリング15の付勢力に抗してクラッチ４の係
合爪からレバー５を外すための力が必要であり、引き戻
し時にはこの力の必要がないため、平均すると引き出し
時にわずかに張力が高く、引き戻し時には張力が低い傾
向がある。Although the above-mentioned conventional example enables the handling of a woven fabric having a large yarn withdrawal angle, since the same tension applying mechanism acts to apply the tension at the time of yarn withdrawal and at the time of pullback, Approximately the same tension acts on the yarn at the time of withdrawal and withdrawal. However, at the time of pulling out the thread, a force for releasing the lever 5 from the engaging claw of the clutch 4 against the urging force of the return spring 15 is required. Tension tends to be high, and tension tends to be low when pulled back.

一方、ブレード方式の三次元織物用織機における織物
と糸の関係を模式的に示すと、図17のようになる。同図
からわかるように、製織時には、織物を高密度化する方
向に張力が働く糸7aと、織物を広げて低密度化する方向
に張力が働く糸（太線）7bがある。そして、織物を高密
度化する方向に張力が働く糸は、ボビンを織物の中心か
ら外側に向けて移動させる糸、即ちボビンから繰り出さ
れる糸であり、織物を低密度化する方向に張力が働く糸
は、ボビンを織物の中心に向けて移動させる糸、即ちボ
ビンに引き戻される糸である。そのため、この２種類の
糸、つまりボビンから繰り出される糸とボビンに引き戻
される糸に張力差をつけ、繰り出される糸に高張力を、
引き戻される糸に低張力を作用させれば、高張力糸の筬
打ち効果により、一層配向角を大きく広げて織物を高密
度化することが可能になる。On the other hand, FIG. 17 schematically shows the relationship between the woven fabric and the yarn in the blade type three-dimensional weaving loom. As can be seen from the figure, at the time of weaving, there are a yarn 7a that exerts tension in the direction of increasing the density of the woven fabric and a yarn (bold line) 7b that exerts tension in the direction of expanding the woven fabric to reduce the density. The yarn that acts in the direction of increasing the density of the fabric is a yarn that moves the bobbin from the center of the fabric toward the outside, that is, the yarn that is drawn out from the bobbin, and the tension acts in the direction of decreasing the density of the fabric. The yarn is the yarn that moves the bobbin toward the center of the fabric, that is, the yarn that is pulled back to the bobbin. Therefore, a tension difference is created between the two types of yarn, that is, the yarn that is fed from the bobbin and the yarn that is pulled back to the bobbin, and a high tension is applied to the yarn that is fed.
When a low tension is applied to the yarn to be pulled back, the beating effect of the high-tensile yarn makes it possible to further widen the orientation angle and increase the density of the woven fabric.

しかしながら、上記図16に示すような糸張力付与装置
では、引き出し時と引き戻し時の糸張力がほぼ一定であ
るため、上記配向角を上げることが困難である。However, in the yarn tension applying device as shown in FIG. 16, it is difficult to increase the orientation angle because the yarn tension at the time of pulling out and at the time of pulling back are almost constant.

また、ボビン３から糸を導出するための糸ガイド10
は、キャリヤ１の中心に立設したボビン支持軸２の上方
に配置するのが、ボビン３における糸巻き量を多くし、
製織動作時のキャリヤ１の走行に伴う糸張力の変動を少
なくするうえで最も好ましいが、従来から知られている
上記図16の糸張力付与装置では、キャリヤ同志が接近し
ても互いに接触しないキャリヤ上のスペースにボビンと
張力付与機構とを配置し、その際、糸の補給のためのボ
ビン着脱時に張力付与機構が操作の邪魔にならないよう
に、ボビン支持軸２をキャリヤ中心線に対して偏心させ
ている。Further, a yarn guide 10 for leading the yarn from the bobbin 3 is provided.
Is arranged above the bobbin support shaft 2 erected at the center of the carrier 1 to increase the bobbin winding amount on the bobbin 3,
Although it is most preferable to reduce the fluctuation of the yarn tension due to the traveling of the carrier 1 during the weaving operation, the conventionally known yarn tension applying device shown in FIG. 16 does not contact the carriers even if the carriers approach each other. The bobbin and the tension applying mechanism are arranged in the upper space. At this time, the bobbin supporting shaft 2 is eccentric with respect to the carrier center line so that the tension applying mechanism does not hinder the operation when the bobbin for supplying the yarn is attached or detached. Let me.

しかしながら、このようにボビン３をキャリヤの偏心
位置に設ける構造を採用すると、その偏心量だけボビン
径が小さくなり、糸巻き量が少なくなる、しかも、張力
付与機構がボビンの横に配置されるため、ボビンの交換
等のための着脱が容易になるが、糸７がキャリヤの中心
から偏寄した位置から導出されるため、キャリヤが製織
の進行に応じて移動、回転した時に、常に一定の張力を
糸に付与できるとは限らない。However, if the structure in which the bobbin 3 is provided at the eccentric position of the carrier is adopted, the bobbin diameter is reduced by the eccentric amount, the thread winding amount is reduced, and the tension applying mechanism is arranged beside the bobbin. The bobbin can be easily attached and detached for replacement or the like, but since the thread 7 is led out from a position deviated from the center of the carrier, a constant tension is always applied when the carrier moves and rotates according to the progress of weaving. It cannot always be applied to yarn.

そこで、張力付与機構をキャリヤ１の中心に立設した
ボビン支持軸２の上に配置すると共に、ボビン３から糸
７を導出するための糸ガイド10をキャリヤ１の中心にお
いてそのボビン支持軸２の上方に配置することになる
が、この場合には、ボビン３を交換等のための着脱を何
らかの手段によって容易にする必要がある。特に、三次
元組紐等の三次元織物を製造する繊維機械においては、
多数のキャリヤをキャリヤ移動面に配置して駆動する必
要があり、糸張力付与装置の小型、小径化が要求される
ため、一層ボビンの着脱が困難になる。Therefore, the tension applying mechanism is arranged on the bobbin support shaft 2 erected at the center of the carrier 1, and a thread guide 10 for leading out the thread 7 from the bobbin 3 is provided at the center of the carrier 1 on the bobbin support shaft 2. In this case, the bobbin 3 needs to be easily attached and detached for replacement or the like by some means. In particular, in a textile machine for producing a three-dimensional fabric such as a three-dimensional braid,
Since it is necessary to drive a large number of carriers arranged on the carrier moving surface, and it is required to reduce the size and diameter of the yarn tension applying device, it becomes more difficult to attach and detach the bobbin.

発明の開示本発明の主たる目的は、上述した配向角の大きな三次
元織物を簡易に製織することを可能にするため、糸条の
繰り出し時には大きな糸張力となり、引き戻し時には、
引き戻し量が大きいが小さい糸張力を作用させるように
した糸張力付与方法及びその装置を提供することにあ
る。DISCLOSURE OF THE INVENTION The main object of the present invention is to make it possible to easily weave the three-dimensional woven fabric having a large orientation angle described above.
An object of the present invention is to provide a yarn tension applying method and a device for applying a small yarn tension with a large retraction amount.

本発明の他の目的は、キャリヤ移動面に配置した糸条
のキャリヤをキャリヤ駆動機構によりその移動面内で所
要の軌跡に沿って走行させ、そのキャリヤに保持させた
糸条を互いに組織させて三次元織物を製織する繊維機械
のための糸張力付与方法またはその装置であって、織物
の配向角を大きくする筬打ち効果を有効に発揮する手段
を提供することにある。Another object of the present invention is to cause a carrier of a yarn arranged on a carrier moving surface to travel along a required trajectory in the moving surface by a carrier driving mechanism, and to organize the yarns held by the carrier to each other. It is an object of the present invention to provide a method or apparatus for applying a yarn tension for a textile machine for weaving a three-dimensional woven fabric, which effectively provides a beating effect for increasing the orientation angle of the woven fabric.

本発明の他の目的は、上記織物の配向角を大きくでき
る筬打ち効果だけでなく、屈曲の大きな引き戻し時の糸
条の張力を下げることにより毛羽だちの減少効果が得ら
れるようにした糸張力付与手段を提供することにある。Another object of the present invention is to provide not only a beating effect capable of increasing the orientation angle of the woven fabric, but also a yarn tension in which an effect of reducing fluff is obtained by lowering the yarn tension at the time of retraction with large bending. An object is to provide an application means.

本発明の他の目的は、キャリヤ上に高張力機構と低張
力機構を設け、糸条の繰り出し時には上記高張力機構に
よる大きな糸張力を糸条に作用させ、引き戻し時には高
張力機構の引戻し限界を越えたところから低張力機構に
よる小さい糸張力を付与するようにした糸張力付与方法
及びその装置を提供することにある。Another object of the present invention is to provide a high tension mechanism and a low tension mechanism on a carrier, to apply a large yarn tension to the yarn by the high tension mechanism when the yarn is paid out, and to limit the retraction limit of the high tension mechanism when the yarn is pulled back. It is an object of the present invention to provide a yarn tension applying method and an apparatus for applying a small yarn tension by using a low tension mechanism from a point beyond the above.

本発明の他の目的は、三次元織物を製造する繊維機械
の糸張力付与装置において、キャリヤの中心に立設した
ボビン支持軸の上端に高張力機構の支持部材を容易に着
脱できるように、あるいはキャリヤに対して上記ボビン
支持軸を容易に着脱できるようにし、それによって安定
的な製織を行えると同時に、ボビンの交換を容易にした
糸張力付与装置を得ることにある。Another object of the present invention is to provide a yarn tension applying device for a textile machine for producing a three-dimensional fabric, so that a support member of a high tension mechanism can be easily attached to and detached from an upper end of a bobbin support shaft erected at the center of a carrier. Another object of the present invention is to provide a yarn tension applying device that allows the bobbin support shaft to be easily attached to and detached from a carrier, thereby enabling stable weaving and, at the same time, facilitating replacement of the bobbin.

本発明の他の目的は、高張力機構における給糸張力の
調整を簡易な手段によって行うことができ、かつ、容易
に外部からその調整状態を視認できるようにした糸張力
付与装置を得ることにある。Another object of the present invention is to provide a yarn tension applying device capable of adjusting the yarn feeding tension in a high tension mechanism by a simple means, and allowing the adjustment state to be easily visually recognized from the outside. is there.

本発明の他の目的は、上記低張力機構における戻しス
プリングの付勢力が安定的に略一定に保たれるようにし
た糸張力付与装置を得ることにある。Another object of the present invention is to provide a yarn tension applying device in which the urging force of the return spring in the low tension mechanism is stably kept substantially constant.

本発明の更に他の目的は、上述した糸条にほぼ一定の
張力を付与すると同時に、そのたるみの発生を抑制でき
る程度に引き戻しを行えるようにしたところの、故障が
少ない簡単で小型な張力付与装置を得ることにある。Still another object of the present invention is to provide a simple and compact tension applying apparatus which applies a substantially constant tension to the above-described yarn and at the same time allows the yarn to be pulled back to such an extent that the occurrence of the slack can be suppressed. To get the equipment.

上記目的を達成するため、本発明の糸張力付与方法
は、キャリヤ移動面に配置した糸条のキャリヤをキャリ
ヤ駆動機構によりその移動面内で所要の軌跡に沿って走
行させ、そのキャリヤに保持させた糸条を互いに組織さ
せて三次元織物を製織する繊維機械のために糸張力付与
方法であって、上記キャリヤ上に設けた高張力機構によ
り、ボビンから導出される糸条に対して、引き戻し量が
小さく、繰り出し張力が大きい高張力を付与し、上記キ
ャリヤとボビンとの間に設けた低張力機構により、ボビ
ンに対して、引き戻し量が大きく、繰り出し張力が小さ
い低張力のための回転を備え、糸条の繰り出し時には上
記高張力機構による大きな糸張力を糸条に作用させ、引
き戻し時には高張力機構の引戻し限界を越えたところか
ら低張力機構による小さい糸張力を付与することを特徴
とするものである。In order to achieve the above object, the yarn tension applying method of the present invention is to cause a carrier of a yarn arranged on a carrier moving surface to travel along a required trajectory in the moving surface by a carrier driving mechanism and to be held by the carrier. A yarn tensioning method for a textile machine for weaving three-dimensional fabrics by weaving the yarns together, wherein the yarn pulled out from the bobbin is pulled back by a high tension mechanism provided on the carrier. The low tension mechanism provided between the carrier and the bobbin provides a high tension with a small amount and a large feeding tension, and rotates the bobbin for a low tension with a large drawing back amount and a small feeding tension. When the yarn is paid out, the large tension is applied to the yarn by the high tension mechanism. It is characterized in applying a have thread tension.

また、本発明の糸張力付与装置は、キャリヤ移動面に
配置した糸条のキャリヤをキャリヤ駆動機構によりその
移動面内で所要の軌跡に沿って走行させ、そのキャリヤ
に保持させた糸条を互いに組織させて三次元織物を製織
する繊維機械のための糸張力付与装置であって、上記キ
ャリヤ上に、ボビンから導出される糸条に対して、引き
戻し量が小さく、繰り出し張力が大きい高張力機構を備
えると共に、上記キャリヤとボビンとの間に、引き戻し
量が大きく、繰り出し張力が小さい低張力機構を備え、
上記高張力機構は、糸条の繰り出し時に大きな糸張力を
糸条に作用させるものとし、上記低張力機構は、糸条の
引き戻し時に、高張力機構の引戻し限界を越えたところ
から小さい糸張力に糸条に作用させるものとしたことを
特徴とするものである。Further, in the yarn tension applying device of the present invention, the carrier of the yarn arranged on the carrier moving surface is caused to travel along a required trajectory in the moving surface by the carrier driving mechanism, and the yarn held by the carrier is mutually moved. What is claimed is: 1. A yarn tension applying device for a textile machine for weaving a three-dimensional fabric by weaving, comprising a high tension mechanism with a small amount of retraction and a large unreeling tension with respect to a yarn derived from a bobbin on the carrier. And a low tension mechanism between the carrier and the bobbin with a large amount of retraction and a small feeding tension.
The high-tension mechanism applies a large yarn tension to the yarn when the yarn is fed, and the low-tension mechanism reduces the yarn tension from a position beyond the retraction limit of the high-tension mechanism when the yarn is pulled back. It is characterized in that it acts on the yarn.

上記糸張力付与装置における高張力機構としては、キ
ャリヤ上のボビン支持軸に取り付けた支持部材に、ボビ
ンに設けたクラッチの爪部と係脱する爪を有する張力付
与レバーを揺動自在に支持させ、その張力付与レバーの
先端に、導出した糸条に一定の張力が作用したときに、
その糸の張力によりクラッチに対する上記爪の係合を外
す方向に張力付与レバーを傾動させる糸ガイドを設け、
該レバーの尾端に、糸条に対して高張力を作用させるた
めの高張力付与手段を作用させた構成を採用することが
でき、更にその高張力付与手段として、張力付与レバー
の端部に付勢力を作用させる張力スプリングを用いるこ
とができる。As a high tension mechanism in the thread tension applying device, a supporting member attached to a bobbin supporting shaft on the carrier is configured to swingably support a tension applying lever having a pawl that engages with and disengages from a pawl portion of a clutch provided on the bobbin. , When a certain tension acts on the drawn yarn at the tip of the tension applying lever,
A thread guide for tilting the tension applying lever in a direction to release the engagement of the claw with the clutch by the tension of the thread is provided,
At the tail end of the lever, a structure in which high tension applying means for applying high tension to the yarn can be adopted, and as the high tension applying means, the end of the tension applying lever can be used. A tension spring for applying a biasing force can be used.

また、上記糸張力付与装置における低張力機構として
は、キャリヤ上のボビン支持軸の周りにスプリング収容
室を設けて、うず巻き状の戻しスプリングを収容し、そ
の戻しスプリングの内端を、上記ボビン支持軸に回転自
在に嵌合してボビンに連結されるボビン連結部材に固定
すると共に、その戻しスプリングの外端側を、該スプリ
ングの巻上げ量が巻上げ限界を越えたときの該スプリン
グの小型化により係合を外し、その結果の巻き戻しに伴
う大径への復帰により再係合を行う係合用凹凸を介して
スプリング収容室の内周面に係合させた構成とすること
ができる。As a low tension mechanism in the yarn tension applying device, a spring accommodating chamber is provided around a bobbin support shaft on a carrier to accommodate a spiral return spring, and the inner end of the return spring is supported by the bobbin support. The return spring is fixed to a bobbin connection member rotatably fitted to a shaft and connected to a bobbin, and the outer end side of the return spring is reduced by downsizing the spring when the winding amount of the spring exceeds the winding limit. It is possible to adopt a configuration in which the engagement is released and the inner surface of the spring accommodating chamber is engaged via the engaging concave and convex portions which are re-engaged by returning to a large diameter upon rewinding as a result.

このような構成を有する糸張力付与装置においては、
糸条が引き出されると、高張力機構が作用して、張力付
与レバーの糸ガイドに挿通した糸条の作用で該レバーが
傾動し、糸条の導出量がレバーにおける吸収長の限界を
越えると、該レバーの爪がボビンのクラッチから離脱し
て糸張力によりボビンが回転し、糸条が繰り出される。
糸条の導出によりその張力が低下し、それに伴って張力
付与レバーが復帰すると、その爪がクラッチに係合して
ボビンの回転が抑止される。従って、糸条に作用する張
力と張力スプリングの付勢力のバランスにより、糸条に
は常にそのスプリング力に対応した高張力が付与され
る。In the yarn tension applying device having such a configuration,
When the yarn is pulled out, the high tension mechanism operates, the lever is tilted by the action of the yarn inserted into the yarn guide of the tension applying lever, and when the amount of the drawn out yarn exceeds the limit of the absorption length in the lever, Then, the pawl of the lever is disengaged from the clutch of the bobbin, and the bobbin is rotated by the yarn tension, so that the yarn is fed.
When the tension is reduced due to the thread being led out and the tension applying lever returns accordingly, the pawl is engaged with the clutch and the rotation of the bobbin is suppressed. Therefore, a high tension corresponding to the spring force is always applied to the yarn by the balance between the tension acting on the yarn and the urging force of the tension spring.

この高張力機構の作用により糸条が繰り出されると、
ボビンの回転により低張力機構の戻しスプリングが巻き
上げられ、その巻上げ量が巻上げ限界を越えると、戻し
スプリングの先端側とスプリング収容室の内周面との凹
凸の係合が外れ、ボビン回転方向にずれた位置で再度そ
の凹凸が係合する。When the yarn is fed out by the action of this high tension mechanism,
When the bobbin rotates, the return spring of the low tension mechanism is wound up, and when the amount of winding exceeds the winding limit, the engagement of the unevenness between the distal end side of the return spring and the inner peripheral surface of the spring accommodating chamber is released, and the bobbin rotates in the direction of rotation. The unevenness is engaged again at the shifted position.

余剰の糸条をボビンに引き戻すときには、糸条の張力
の低下に伴って高張力機構における張力付与レバーの爪
がクラッチに当たり、その間の糸条の小さい引き戻しの
後張力スプリングの力と糸張力のバランス関係が断され
る。そのため、糸条は低張力機構の戻しスプリングによ
りボビンに作用しているトルクとバランスした状態で巻
き戻される。When the excess yarn is pulled back to the bobbin, the claw of the tension applying lever in the high tension mechanism hits the clutch due to a decrease in the tension of the yarn. The relationship is broken. Therefore, the yarn is unwound in a state of being balanced with the torque acting on the bobbin by the return spring of the low tension mechanism.

このように、引き戻し量が小さく、繰り出し張力の大
きい高張力機構と、引き戻し量が大きく、繰り出し張力
が小さい低張力機構とを有効に組み合わせることによ
り、繰り出し時には大きな糸張力となり、引き戻し時に
は、大きな張力による引き戻し限界を越えたところから
小さい糸張力を作用させることができ、そのため三次元
織機において配向角の大きな三次元織物を簡易に製織す
ることが可能になる。As described above, by effectively combining the high tension mechanism having a small retraction amount and a large unwinding tension and the low tension mechanism having a large retraction amount and a small unwinding tension, a large thread tension is obtained at the time of unwinding and a large tension is obtained at the time of unwinding. A small thread tension can be applied from the position beyond the pullback limit due to the above, so that it is possible to easily weave a three-dimensional fabric having a large orientation angle in a three-dimensional loom.

さらに、上記糸張力付与装置においては、キャリヤの
中心に立設したボビン支持軸にボビンを回転自在に嵌挿
し、このボビン支持軸の先端に、ボビンから解舒して該
ボビン支持軸の上方から導出される糸条の導出ガイドを
備えた支持部材を回転不能にして着脱自在に取り付ける
ことができ、この支持部材の取り付けに際しては、該支
持部材に設けたボビン支持軸先端の嵌挿穴内に固定ピン
を架設し、ボビン支持軸の先端に上記固定ピンの径より
小幅の割溝を設けると共に、その割溝内の対向面に上記
固定ピンが嵌入する凹部を設け、この凹部内において固
定ピンを弾性的な押圧挟持状態で保持させることができ
る。Further, in the yarn tension applying device, the bobbin is rotatably inserted into a bobbin support shaft provided upright at the center of the carrier, and the bobbin support shaft is unwound from the bobbin at the tip of the bobbin support shaft from above the bobbin support shaft. A support member having a guide for leading out a thread can be detachably attached to the support member in a non-rotatable manner. When the support member is attached, the support member is fixed in a fitting hole at a tip end of a bobbin support shaft provided in the support member. A pin is erected, a split groove having a width smaller than the diameter of the fixing pin is provided at the tip of the bobbin support shaft, and a concave portion in which the fixing pin is fitted is provided on an opposing surface in the split groove. It can be held in an elastic pressing and holding state.

また、上記ボビン支持軸に対する支持部材の取り付け
に際しては、該支持部材に設けたボビン支持軸先端の嵌
挿穴内に弾性ピンを架設し、ボビン支持軸の先端部側面
に上記弾性ピンが嵌入する凹部を設け、この凹部内にお
いて弾性ボビンをボビン支持軸に弾性的に圧接させるこ
とができる。When the support member is attached to the bobbin support shaft, an elastic pin is erected in a fitting hole at the tip of the bobbin support shaft provided on the support member, and a concave portion in which the elastic pin fits into a side surface of the tip of the bobbin support shaft. And the elastic bobbin can be elastically pressed against the bobbin support shaft in the concave portion.

このように構成して、ボビン支持軸の軸頭に支持部材
に設けた嵌挿穴を圧嵌すると、上記ボビン支持軸の軸頭
または嵌挿穴内の弾性ピンが弾性的に変形しながらボビ
ン支持軸に嵌装され、軸頭に設けた凹部内に嵌挿穴内の
ピンが落ち込むことにより両者が簡易に着脱可能に連結
され、ボビン支持軸の上端に支持部材を取付けているに
もかかわらずボビンの交換を容易に行うことが可能にな
り、しかも、嵌挿穴内のピンとボビン支持軸の軸頭とが
相互に弾性的に圧接するので、ボビン支持軸に対して軸
方向及び回転方向の動きを安定的に拘束して支持部材を
連結することが可能になる。With this configuration, when the insertion hole provided in the support member is pressed into the shaft head of the bobbin support shaft, the bobbin support shaft is elastically deformed by the elastic pin in the shaft head of the bobbin support shaft or the insertion hole. The bobbin is fitted to the shaft, and the pins in the fitting holes fall into the recesses provided in the shaft head, so that the two can be easily and detachably connected to each other, and the bobbin is attached to the upper end of the bobbin supporting shaft. Can be easily exchanged, and the pin in the insertion hole and the shaft head of the bobbin support shaft are elastically pressed against each other, so that the movement in the axial direction and the rotation direction with respect to the bobbin support shaft can be prevented. It becomes possible to stably restrain and connect the support members.

一方、上記ボビンの交換のために、ボビン支持軸をキ
ャリヤの中心に回転不能にして着脱自在に立設し、この
ボビン支持軸にボビンを回転自在に嵌挿し、このボビン
支持軸の先端に、ボビンから解舒して該ボビン支持軸の
上方から導出される糸条の導出ガイドを備えた支持部材
を取り付けることができ、このキャリヤに対するボビン
支持軸の取り付けに際しては、キャリヤに設けたボビン
支持軸の嵌挿穴内にＵ型ピンを架設し、ボビン支持軸の
先端に上記Ｕ型ピンを押し拡げるテーパー部分を設ける
と共に、そのテーパー部分を越えたＵ型ピンが嵌入する
凹部を設け、この凹部内においてボビン支持軸をＵ型ピ
ンにより弾性的な押圧挟持状態で保持させることができ
る。On the other hand, in order to replace the bobbin, the bobbin support shaft is non-rotatably mounted at the center of the carrier and is detachably erected, and the bobbin is rotatably inserted into the bobbin support shaft. A support member having a guide for unwinding the yarn unwound from the bobbin and drawn out from above the bobbin support shaft can be attached. When the bobbin support shaft is attached to the carrier, the bobbin support shaft provided on the carrier is used. A U-shaped pin is erected in the fitting insertion hole, and a tapered portion for pushing and expanding the U-shaped pin is provided at the tip of the bobbin support shaft, and a concave portion for fitting the U-shaped pin beyond the tapered portion is provided. In the above, the bobbin support shaft can be held in an elastic pressing and holding state by the U-shaped pin.

このように構成すると、繊維機械の運転開始やボビン
の交換に際し、ボビンをボビン支持軸及びそれに取付け
た高張力機構の支持部材と共に取り外した状態で、糸ガ
イドに対する糸通しなどの糸条の準備を一層容易に行う
ことが可能になる。With this configuration, when the operation of the textile machine is started or the bobbin is replaced, the bobbin is removed together with the bobbin support shaft and the support member of the high tension mechanism attached to the bobbin, and preparation of a thread such as threading of the thread guide is performed. This can be performed more easily.

また、上記糸張力付与装置における高張力機構におい
ては、ボビン支持軸上の支持部材に設けたガイド軸に張
力スプリングを外嵌させ、この張力スプリングを張力付
与レバーの端部とガイド軸上に設けたバネ受けとの間に
縮設し、ガイド軸上に該バネ受けを固定するための溝を
適当な間隔で列設し、それらの溝のいずれかに弾性リン
グを介して該バネ受けを係止させ、上記レバーの端部に
作用する張力スプリングの付勢力を調整可能にすること
ができる。In the high tension mechanism of the yarn tension applying device, a tension spring is externally fitted to a guide shaft provided on a support member on a bobbin support shaft, and the tension spring is provided on an end of the tension applying lever and on the guide shaft. And grooves for fixing the spring receiver on the guide shaft are arranged at appropriate intervals on the guide shaft, and the spring receiver is engaged with one of the grooves via an elastic ring. It is possible to adjust the biasing force of the tension spring acting on the end of the lever.

このような機構によって、ガイド軸上のバネ受けを適
当な位置にある溝に弾性リングを介して固定し、高張力
機構における張力スプリングの付勢力を調整すると、給
糸張力の調整を簡易に行うことができるばかりでなく、
その調整状態を容易に外部から視認することが可能にな
る。With such a mechanism, when the spring receiver on the guide shaft is fixed to a groove at an appropriate position via an elastic ring, and the biasing force of the tension spring in the high tension mechanism is adjusted, the adjustment of the yarn feeding tension is easily performed. Not only can you do
The adjustment state can be easily visually recognized from the outside.

更にまた、上記糸張力付与装置の低張力機構において
は、うず巻き状の戻しスプリングを、巻き径の内側の剛
性が弱く、外側の剛性を大きくすることができ、この場
合に、剛性の弱い基端側スプリングの先端に、剛性の高
い先端側スプリングを連結することにより構成すること
もできる。Furthermore, in the low tension mechanism of the above-described yarn tension applying device, the spiral return spring can reduce the rigidity on the inner side of the winding diameter and increase the rigidity on the outer side. It may be configured by connecting a highly rigid distal end spring to the distal end of the side spring.

このような構成を有する低張力機構によれば、糸条の
導出によりボビンが回転して戻しスプリングが巻き上げ
られ、それが小径化するとき、該戻しスプリングで剛性
の弱い基端側は比較的容易に変形して巻き締められる
が、剛性が大きい先端側は、戻しスプリングに作用する
巻き締め力がある程度大きくなった後でなければ縮径さ
れず、そのため、戻しスプリングの全体が十分に巻き締
められてから、その先端側とスプリング収容室内周面と
の凹凸による係合が外れることになるので、戻しスプリ
ングの付勢力が安定的に略一定に保持される。According to the low tension mechanism having such a structure, when the bobbin rotates and the return spring is wound up by the lead-out of the yarn, and when the diameter of the return spring is reduced, the base end side, which is less rigid with the return spring, is relatively easy. However, the diameter of the distal end, which has high rigidity, will not be reduced unless the tightening force acting on the return spring is increased to some extent, so that the entire return spring is sufficiently wound and tightened. Thereafter, the engagement between the distal end side and the peripheral surface of the spring accommodating chamber due to unevenness is released, so that the biasing force of the return spring is stably maintained substantially constant.

図面の簡単な説明図１は、本発明に係る糸張力付与装置の実施例の側断
面図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side sectional view of an embodiment of a yarn tension applying device according to the present invention.

図２は、同一部破断平面図である。 FIG. 2 is a cutaway plan view of the same part.

図３は、上記実施例における低張力機構を示す横断面
図である。FIG. 3 is a cross-sectional view showing the low tension mechanism in the above embodiment.

図４は、同低張力機構におけるフックの離脱状態を示
す横断面図である。FIG. 4 is a cross-sectional view showing a detached state of the hook in the low tension mechanism.

図５は、上記実施例における張力調整装置の詳細を示
す要部断面図である。FIG. 5 is a sectional view of a main part showing details of the tension adjusting device in the above embodiment.

図６はＡ〜Ｃは、上記張力調整装置における弾性リン
グの構造例を示す斜視図である。FIGS. 6A to 6C are perspective views showing examples of the structure of the elastic ring in the tension adjusting device.

図７はＡ〜Ｃは、上記実施例におけるボビン支持軸と
高張力機構の支持部材との装着態様を順を追って示す要
部断面図である。FIGS. 7A to 7C are cross-sectional views of main parts sequentially showing mounting modes of the bobbin support shaft and the support member of the high tension mechanism in the above embodiment.

図８は、上記ボビン支持軸と高張力機構の支持部材と
の装着機構の他の構造例を示す要部斜視図である。FIG. 8 is a perspective view of a main part showing another structural example of a mounting mechanism of the bobbin support shaft and the support member of the high tension mechanism.

図９は、上記実施例の低張力機構における戻しスプリ
ングの構成を示す斜視図である。FIG. 9 is a perspective view showing the configuration of the return spring in the low tension mechanism of the above embodiment.

図10は、上記低張力機構の他の構造例を示す分解斜視
図である。FIG. 10 is an exploded perspective view showing another structural example of the low tension mechanism.

図11のＡ〜Ｃは、上記低張力機構における戻しスプリ
ングの異なる構成例を示す斜視図である。FIGS. 11A to 11C are perspective views showing different configuration examples of the return spring in the low tension mechanism.

図12は、上記図11Cの戻しスプリングを用いた低張力
機構の分解斜視図である。FIG. 12 is an exploded perspective view of the low tension mechanism using the return spring of FIG. 11C.

図13は、キャリヤに対してボビン支持軸を着脱可能に
した実施例の要部断面図である。FIG. 13 is a cross-sectional view of a main part of an embodiment in which a bobbin support shaft is detachable from a carrier.

図14は、同実施例におけるキャリヤの下面図である。 FIG. 14 is a bottom view of the carrier in the embodiment.

図15は、同実施例におけるボビン支持軸の取り付け構
造を説明するための要部分解斜視図である。FIG. 15 is an exploded perspective view of a main part for describing a mounting structure of a bobbin support shaft in the embodiment.

図16は、従来の一般的な糸張力付与装置の概念図であ
る。FIG. 16 is a conceptual diagram of a conventional general thread tension applying device.

図17は、ブレード方式の三次元織物用織機における織
物と糸の関係を模式的に示す説明図である。FIG. 17 is an explanatory diagram schematically showing a relationship between a woven fabric and a yarn in a blade-type three-dimensional weaving loom.

発明の実施するための最良の形態以下に、本発明に係る糸張力付与装置の実施例を、糸
張力付与方法と共に説明するが、本発明は、請求の範囲
に記載の趣旨を損なわない範囲内で設計を変更して実施
することができる。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of a yarn tension applying device according to the present invention will be described together with a yarn tension applying method. However, the present invention does not depart from the scope of the claims. Can be implemented by changing the design.

図１ないし図４は、本発明に係る糸張力付与装置の実
施例を示している。1 to 4 show an embodiment of the yarn tension applying device according to the present invention.

この糸張力付与装置は、組紐のような三次元織物を製
造する繊維機械（特開平４−41756号公報参照）におい
て有効に利用できるもので、その繊維機械において、キ
ャリヤ移動面内でキャリヤ駆動機構により所要の軌跡に
沿って走行せしめられる多数のキャリヤ20上にそれぞれ
設置され、キャリヤ20の制御された走行によりボビンに
巻かれた糸条を互いに組織させて三次元織物が製織され
る。キャリヤ20は、キャリヤ駆動機構により所定の軌跡
に沿って走行させるのに適した構造を有するもので、こ
こでは、図３及び図４において明瞭に示すように、一対
のロータ間に挟持させるための紡錘型に形成している。
なお、図１においては、紙面と直交する垂直面でのキャ
リヤの断面形状を二点鎖線で示している。This yarn tension applying device can be effectively used in a textile machine for producing a three-dimensional fabric such as a braid (see Japanese Patent Application Laid-Open No. 4-41756). Thus, the three-dimensional woven fabric is woven by arranging the yarns wound on the bobbins with each other by controlling the carrier 20 so that the yarns are installed on a plurality of carriers 20 which are driven along a required locus. The carrier 20 has a structure suitable for traveling along a predetermined trajectory by a carrier driving mechanism, and here, as clearly shown in FIGS. It is formed in a spindle shape.
In FIG. 1, the cross-sectional shape of the carrier on a vertical plane orthogonal to the paper surface is indicated by a two-dot chain line.

その構成を具体的に説明すると、この糸張力付与装置
は、引き戻し量が小さく、繰り出し張力が大きい高張力
機構21と、引き戻し量が大きく、繰り出し張力が小さい
低張力機構22とを備え、それらの機能を一つのボビン23
に同時に働かせることにより、糸条24の繰り出し時は大
きな糸張力となり、引き戻し時には、大きな張力による
引き戻し限界を越えたところから小さい張力になるよう
に制御されるものである。Specifically, the yarn tension applying device includes a high tension mechanism 21 having a small retraction amount and a large feeding tension, and a low tension mechanism 22 having a large retraction amount and a small feeding tension. Function of one bobbin 23
When the yarn 24 is fed out, the yarn tension is controlled to be large, and when the yarn 24 is pulled back, the yarn tension is controlled so as to become small from the point where the yarn exceeds the retraction limit due to the large tension.

そのような制御を行うため、上記キャリヤ20上には、
その中央にボビン支持軸26を立設し、この支持軸26に糸
条24を捲回したボビン23を回転自在に嵌挿し、そのボビ
ン23を、キャリヤ20との間に設けた低張力機構22におけ
るボビン連結部材27に、相互の係合用爪28の係合により
相対回転しないようにして接離可能に連結し、そのボビ
ン連結部材27上に支持させている。また、上記支持軸26
の上端には固定ピン29により高張力機構21における支持
部材30を連結している。In order to perform such control, on the carrier 20,
A bobbin support shaft 26 is erected at the center thereof, and a bobbin 23 around which a thread 24 is wound is rotatably inserted into the support shaft 26, and the bobbin 23 is provided between the carrier 20 and a low tension mechanism 22. Is connected to the bobbin connecting member 27 so as not to rotate relative to each other by the engagement of the engaging claws 28, and is supported on the bobbin connecting member 27. The support shaft 26
A support member 30 in the high tension mechanism 21 is connected to an upper end of the support member 30 by a fixing pin 29.

高張力機構21の支持部材30は、ボビン23の周囲まで垂
下する垂下部の下端に位置して該ボビン23から解舒した
糸条24をガイドする糸ガイド31、その糸条24を支持部材
30上の張力付与レバー34よりも上方位置でガイドする糸
ガイド32、キャリヤ20の中心上における支持部材30の先
端部において糸条24の導出をガイドする糸導出ガイド33
を備えている。The support member 30 of the high tension mechanism 21 is located at the lower end of the hanging part hanging down to the periphery of the bobbin 23, and guides the yarn 24 unwound from the bobbin 23.
A thread guide 32 for guiding the thread 24 at a position above the tension applying lever 34 on the 30; a thread deriving guide 33 for guiding the thread 24 at the tip of the support member 30 on the center of the carrier 20
It has.

上記張力付与レバー34は、中間部をピン25によって支
持部材30に揺動自在に支持させると共に、その近辺にお
いて該レバー34の揺動により上記ボビン23の端面に設け
たクラッチ35の爪部と係脱する爪36を設けている。ま
た、この張力付与レバー34の先端には、前記糸ガイド32
に対向して、爪36がクラッチ35の爪部に係合していると
きには該糸ガイド32よりもある程度下方に位置する糸ガ
イド37を備えると共に、その他端には、糸条24に高張力
を作用させるための張力スプリング38を圧接している。The tension applying lever 34 has an intermediate portion swingably supported by a support member 30 by a pin 25, and in the vicinity of the tension imparting lever 34, engages with a claw portion of a clutch 35 provided on an end surface of the bobbin 23 by swinging of the lever 34. A detachable claw 36 is provided. The thread guide 32 is attached to the tip of the tension applying lever 34.
When the claw 36 is engaged with the claw portion of the clutch 35, a thread guide 37 located somewhat below the thread guide 32 is provided, and at the other end, a high tension is applied to the thread 24. A tension spring 38 for operating the pressure spring is pressed.

張力スプリング38は、支持部材30に固定したガイド軸
39上に保持させたバネ受け40と、そのガイド軸39に遊嵌
した張力付与レバー34端部の二股部34aとの間に縮設し
たものである。この張力スプリング38は、後述するよう
に、張力付与レバー34に作用させる張力を任意に設定す
ることができるが、レバー34の揺動範囲内においてのみ
糸条24の引き戻しを行うものであるため、その引き戻し
量は比較的小さいものとなる。The tension spring 38 is a guide shaft fixed to the support member 30.
It is contracted between a spring receiver 40 held on the top 39 and a forked portion 34a at the end of a tension applying lever 34 loosely fitted on the guide shaft 39. As described later, the tension spring 38 can arbitrarily set the tension applied to the tension applying lever 34, but since the tension spring 38 pulls back the thread 24 only within the swing range of the lever 34, The amount of retraction is relatively small.

また、張力付与レバー34の先端に設けた糸ガイド37
は、支持部材30の糸ガイド32から該糸ガイド37及び支持
部材上の導出ガイド33を通して導出した糸条24に所定の
張力が作用したとき、糸ガイド37に挿通した糸条24によ
りレバー34を傾動させて、クラッチ35の爪部に対するレ
バー34の爪36の係合を外すためのものである。そのた
め、支持部材30の糸ガイド32,レバー34上の糸ガイド37
及び支持部材30上の導出ガイド33は、それらに挿通した
糸条24がＶ形に屈曲するように配設される。A thread guide 37 provided at the tip of the tension applying lever 34
When a predetermined tension acts on the thread 24 drawn out from the thread guide 32 of the support member 30 through the thread guide 37 and the guide 33 on the support member, the lever 34 is moved by the thread 24 inserted into the thread guide 37. This is for disengaging the pawl 36 of the lever 34 from the pawl portion of the clutch 35 by tilting. Therefore, the thread guide 32 on the support member 30 and the thread guide 37 on the lever 34
The lead-out guide 33 on the support member 30 is disposed such that the thread 24 inserted therethrough is bent in a V-shape.

一方、低張力機構22は、キャリヤ20とボビン23との間
に設けている。即ち、キャリヤ20には、図１、図３及び
図４において明瞭に示すように、それに立設した支持軸
26の周りに円筒状のスプリング収容室42を凹設し、この
スプリング収容室42内に、図９によって後述するうず巻
き状の戻しスプリング43を収容し、その戻しスプリング
43の内端を、中心の支持軸26に回転自在に外嵌したボビ
ン連結部材27の筒軸部27aに固定すると共に、外端側の
フック44をスプリング収容室42の内周面に適当な間隔で
設けたノッチ45のいずれかに係合させている。On the other hand, the low tension mechanism 22 is provided between the carrier 20 and the bobbin 23. That is, as clearly shown in FIGS. 1, 3 and 4, the carrier 20 has a support shaft
A cylindrical spring accommodating chamber 42 is recessed around 26, and a spiral return spring 43, which will be described later with reference to FIG.
An inner end of 43 is fixed to a cylindrical shaft portion 27a of a bobbin connecting member 27 rotatably fitted to a center support shaft 26, and a hook 44 on an outer end is appropriately fixed to an inner peripheral surface of the spring accommodating chamber 42. It is engaged with one of the notches 45 provided at intervals.

この戻しスプリング43は、それが糸条24の導出に伴う
ボビン23及びボビン連結部材27の回転によりボビン連結
部材27の筒軸部27a上に巻き取られたとき、ボビン連結
部材27を介してボビン23に巻き取り方向の力を作用させ
ると共に、その巻き取りがある程度進行して、戻しスプ
リング43が小径に巻き締められることにより、スプリン
グ収容室42の内面のノッチ45に係合していたフック44が
外れたとき、フック44を次のノック45に係合させて戻し
スプリング43の張力を略一定に戻すものである。When the return spring 43 is wound on the cylindrical shaft portion 27a of the bobbin connecting member 27 by the rotation of the bobbin 23 and the bobbin connecting member 27 accompanying the thread 24 being drawn out, the bobbin is connected to the bobbin via the bobbin connecting member 27. A force in the winding direction is applied to the winding 23, and the winding proceeds to some extent, and the return spring 43 is tightened to a small diameter, so that the hook 44 engaged with the notch 45 on the inner surface of the spring accommodating chamber 42. Is released, the hook 44 is engaged with the next knock 45 to return the tension of the return spring 43 to a substantially constant value.

上記構成を有する糸張力付与装置の動作について説明
すると、糸条24の引出し時には、まず、高張力機構21が
作用する。即ち、ボビン23から支持部材30の糸ガイド3
1,32、レバー34上の糸ガイド37及び支持部材30上の導出
ガイド33を通して外部に導出された糸条24に張力が作用
し、該糸条24が導出されると、糸ガイド37に作用する力
で張力付与レバー34が張力スプリング38の付勢力に抗し
て傾動し、糸条の導出量が該レバー34における吸収長の
限界を越えると、該レバー34の爪36がボビン23に設けた
クラッチ35の爪部から離脱して糸張力によりボビン23が
回転（図２において反時計方向回転）し、糸条24が繰り
出される。そして、ボビン23の回転により糸条24の張力
が低下し、それに伴って張力付与レバー34が復帰する
と、その爪36がクラッチ35の爪部に係合してボビン23の
回転が抑止される。従って、糸条24に作用する張力と張
力スプリング38の付勢力のバランスにより、糸条24には
常にそのスプリング力に対応した高張力が付与される。The operation of the yarn tension applying device having the above configuration will be described. When the yarn 24 is pulled out, first, the high tension mechanism 21 operates. That is, the yarn guide 3 of the support member 30 is moved from the bobbin 23
The tension is applied to the thread 24 led out through the thread guides 37 on the levers 34 and the support member 30 and the thread guide 37 on the lever 34. When the thread 24 is led out, it acts on the thread guide 37. When the tension applying lever 34 is tilted against the urging force of the tension spring 38 and the amount of thread drawn out exceeds the limit of the absorption length of the lever 34, the claw 36 of the lever 34 is provided on the bobbin 23. The bobbin 23 is rotated (counterclockwise rotation in FIG. 2) by the thread tension after being disengaged from the claw portion of the clutch 35, and the thread 24 is paid out. Then, when the tension of the thread 24 decreases due to the rotation of the bobbin 23 and the tension applying lever 34 returns accordingly, the claw 36 engages with the claw portion of the clutch 35, and the rotation of the bobbin 23 is suppressed. Therefore, a high tension corresponding to the spring force is always applied to the yarn 24 by the balance between the tension acting on the yarn 24 and the urging force of the tension spring 38.

この高張力機構21においては、その構造上、糸条24の
繰り出し張力は容易に大きくすることができるが、その
反面、糸条の引き戻し量は小さくなる。In the high-tension mechanism 21, due to its structure, the feeding tension of the yarn 24 can be easily increased, but on the other hand, the amount of retraction of the yarn is small.

このような高張力機構21の作用により糸条24が繰り出
される間には、ボビン23及びボビン連結部材27が図３に
おいて矢印方向に回転し、その回転により低張力機構22
の戻しスプリング43が連結部材27の筒軸部27a上に巻き
上げられ、ボビン23には逆にこの戻しスプリング43の力
が糸条の巻き上げ方向の力として作用する。そして、そ
の戻しスプリング43の巻上げが進行すると、戻しスプリ
ング43が次第に小径に巻き締められ、巻き上げ量が巻上
げ限界を越えると、図３の状態から戻しスプリング43の
外端までが小径に巻き締められて、図４に示すように、
戻しスプリング43の先端側のフック44がスプリング収容
室42の内周面のノッチ45から外れ、フック44がボビン回
転方向にずれて、次のノッチ45に係合する。その結果、
戻しスプリング43によって連結部材27及びボビン23を介
して糸条24に作用する張力は常に略一定に保持される。The bobbin 23 and the bobbin connecting member 27 rotate in the direction of the arrow in FIG. 3 while the yarn 24 is fed out by the action of the high tension mechanism 21.
The return spring 43 is wound up on the cylindrical shaft portion 27a of the connecting member 27, and the force of the return spring 43 acts on the bobbin 23 as a force in the yarn winding direction. Then, as the winding of the return spring 43 progresses, the return spring 43 is gradually wound to a small diameter. When the amount of winding exceeds the winding limit, the state from FIG. And as shown in FIG.
The hook 44 on the distal end side of the return spring 43 is disengaged from the notch 45 on the inner peripheral surface of the spring accommodating chamber 42, and the hook 44 is displaced in the bobbin rotation direction and engages with the next notch 45. as a result,
The tension acting on the thread 24 via the connecting member 27 and the bobbin 23 by the return spring 43 is always kept substantially constant.

この低張力機構22における戻しスプリング43により糸
条24に与えられる張力は、前記高張力機構21の張力スプ
リング38により糸条に与えられる張力よりも小さく設定
される。また、この低張力機構においては、うず巻き状
の戻しスプリング43を用いているため、その構造上、前
記高張力機構21に比して糸条24の引き戻し量を十分に大
きく設定することができる。The tension applied to the yarn 24 by the return spring 43 in the low tension mechanism 22 is set smaller than the tension applied to the yarn by the tension spring 38 of the high tension mechanism 21. Further, in this low tension mechanism, since the spiral return spring 43 is used, the amount of retraction of the yarn 24 can be set to be sufficiently larger than that of the high tension mechanism 21 due to its structure.

なお、糸条24の繰り出し時には、高張力機構21におけ
る張力付与レバー34の爪36がクラッチ35の爪部に係脱を
繰り返し、低張力機構22による張力は糸条24に作用しな
い。When the yarn 24 is fed, the claw 36 of the tension applying lever 34 in the high tension mechanism 21 repeatedly engages and disengages with the claw portion of the clutch 35, and the tension by the low tension mechanism 22 does not act on the yarn 24.

糸条24に弛みが生じ、その余剰の糸条がボビン23に引
き戻されるときには、まず、糸条24の張力の低下に伴っ
て、高張力機構21における張力付与レバー34の爪36が張
力スプリング38の付勢力によりクラッチ35の爪部に係合
し、それによって、張力スプリング38の付勢力と糸張力
のバランス関係が断たれる。その間に、張力付与レバー
34により糸条24の小さい引き戻しが行われるが、その引
き戻しによっても弛みがあるときには、糸条は低張力機
構22の戻しスプリング43によりボビン23に作用している
トルクとバランスし、そのトルクによりボビン23側に巻
き戻される。即ち、この引き戻し時には、高張力機構21
の引戻し限界を越えたところから低張力機構22による小
さい糸張力に制御される。When the yarn 24 is slackened and the surplus yarn is pulled back to the bobbin 23, first, as the tension of the yarn 24 decreases, the claw 36 of the tension applying lever 34 in the high tension mechanism 21 The biasing force of the tension spring 38 engages with the claw portion of the clutch 35, thereby breaking the balance between the biasing force of the tension spring 38 and the thread tension. Meanwhile, tensioning lever
The yarn 24 is slightly pulled back by 34, but when the yarn is loosened even by the pulling back, the yarn is balanced with the torque acting on the bobbin 23 by the return spring 43 of the low tension mechanism 22, and the torque causes the bobbin 23 to return. It is rewound to the 23 side. That is, at the time of this retraction, the high tension mechanism 21
Is controlled to a small thread tension by the low tension mechanism 22 from the point where the pullback limit is exceeded.

上記張力スプリング38により張力付与レバー34に作用
させる付勢力は、簡単な機構により適宜調整可能に構成
している。即ち、図１に示すように、高張力機構21にお
ける支持部材30に固定したガイド軸39には、張力スプリ
ング38のバネ受け40を位置調整可能に取り付けるため、
バネ受け40を固定するための多数の溝46を適当な間隔で
列設し、それらの溝46のうちの任意のものに、弾性リン
グ47を介してバネ受け40を係止可能とし、そのバネ受け
40の位置の変更により、上記レバー34の端部に作用する
張力スプリング38の付勢力の調整を可能にしている。The urging force applied to the tension applying lever 34 by the tension spring 38 can be appropriately adjusted by a simple mechanism. That is, as shown in FIG. 1, in order to attach the spring receiver 40 of the tension spring 38 to the guide shaft 39 fixed to the support member 30 in the high tension mechanism 21 so that the position can be adjusted,
A large number of grooves 46 for fixing the spring receiver 40 are arranged at appropriate intervals, and the spring receiver 40 can be locked in any of the grooves 46 via an elastic ring 47. received
By changing the position of 40, the biasing force of the tension spring 38 acting on the end of the lever 34 can be adjusted.

図５は、上記バネ受け40をガイド軸39に取り付けるた
めの構造及び挿脱操作を詳細に示すもので、例えば、バ
ネ受け40をガイド軸39の溝46に弾性リング47を介して装
着する場合には、図５中に鎖線で示すように、中心穴の
内周溝48に弾性リング47を収容したバネ受け40Aをガイ
ド軸39の軸端に圧入し、その圧入状態にあるバネ受け40
Bをそのままずらすことにより、弾性リング47が所期の
溝46に嵌入する位置まで移動させればよい。FIG. 5 shows the structure for attaching the spring receiver 40 to the guide shaft 39 and the insertion / removal operation in detail. For example, when the spring receiver 40 is attached to the groove 46 of the guide shaft 39 via the elastic ring 47. As shown by a chain line in FIG. 5, a spring receiver 40A accommodating an elastic ring 47 in an inner peripheral groove 48 of the center hole is pressed into the shaft end of the guide shaft 39, and the spring receiver 40 in the press-fitted state is inserted.
By shifting B as it is, the elastic ring 47 may be moved to a position where the elastic ring 47 fits into the intended groove 46.

弾性リング47としては、図６のＡに例示しているよう
に、ゴム等の弾性材料からなるＯリング状のリング47
A、同図Ｂに例示するように、一部に切れ目を有する弾
性金属リング47B、同図Ｃに例示するように、コイルバ
ネの両端をねじ込みにより連結してなるリング47Cなど
を用いることができる。As illustrated in FIG. 6A, an O-ring shaped ring 47 made of an elastic material such as rubber is used as the elastic ring 47.
A, as illustrated in FIG. B, an elastic metal ring 47B having a cut in a part thereof, and as illustrated in FIG. C, a ring 47C in which both ends of a coil spring are connected by screwing can be used.

高張力機構21における張力スプリング38の付勢力を調
整するには、ガイド軸39上のバネ受け40を移動し、ガイ
ド軸39上の適当な位置にある溝46に弾性リング47を介し
て固定すればよく、これによって、張力スプリング38を
縮設する張力付与レバー34の二股部34aとガイド軸39上
のバネ受け40との間の間隔が調整され、レバー34の端部
に作用する張力スプリング38の付勢力が調整される。To adjust the biasing force of the tension spring 38 in the high tension mechanism 21, the spring receiver 40 on the guide shaft 39 is moved and fixed to the groove 46 at an appropriate position on the guide shaft 39 via the elastic ring 47. As a result, the distance between the forked portion 34a of the tension applying lever 34 for contracting the tension spring 38 and the spring receiver 40 on the guide shaft 39 is adjusted, and the tension spring 38 acting on the end of the lever 34 is adjusted. Is adjusted.

このような構成は、外部からバネ受け40の位置により
その張力スプリングの付勢力の調整状態を視認でき、張
力の調整状態を確認することができる点で有利なもので
ある。Such a configuration is advantageous in that the state of adjustment of the urging force of the tension spring can be visually recognized from the position of the spring receiver 40, and the state of adjustment of the tension can be confirmed.

なお、高張力機構21としては、上述した張力スプリン
グ38を用いた構成ばかりでなく、それに代えてブレーキ
や重錘を用いたもの、あるいはその他の従来から知られ
ている各種方式のものを用いることもできる。In addition, as the high tension mechanism 21, not only the configuration using the tension spring 38 described above, but also a configuration using a brake or a weight, or other conventionally known various types can be used. Can also.

高張力機構21の支持部材30は、キャリヤ20上の支持軸
26に嵌挿したボビン23を除く機構の全体を支持し、その
ため、ボビン支持軸26の先端から支持部材30を簡易に取
り外し可能にすることにより、ボビン23の交換を容易に
行うことができる。The support member 30 of the high tension mechanism 21 is a support shaft on the carrier 20.
The entire mechanism excluding the bobbin 23 inserted into the bobbin 26 is supported. Therefore, the bobbin 23 can be easily replaced by easily removing the support member 30 from the tip of the bobbin support shaft 26.

この支持部材30をボビン支持軸26に着脱自在に取り付
けるため、図7A〜Ｃに示すように、該支持部材30には、
ボビン支持軸26の嵌挿穴50を設け、この嵌挿穴50内に、
その軸線に直交する固定ピン29を架設している。また、
ボビン支持軸26の外面にテーパーを付した軸頭26aに
は、上記固定ピン29の径よりも若干小幅の割溝51を設け
ると共に、その割溝51内の対向面に、上記固定ピン29が
嵌入する凹部52を設けている。この凹部52は、支持軸26
の分割された軸頭26aが若干弾性的に開いた状態で固定
ピン29を収容できるようにしたものであり、そのため、
凹部52内において固定ピン29が支持軸26の分割された軸
頭26aにより弾性的な押圧挟持状態で保持される。さら
に、上記軸頭26aの外周面は、挿入時の弾性変形を許容
するためにテーパー状に形成しているが、ボビン支持軸
26を完全に嵌挿穴50に挿着した状態でのがたつきを防止
するため、その時点で嵌挿穴50に嵌入する分割された軸
頭26aの分割基部26bを、嵌挿穴50に対して密嵌させてい
る。In order to detachably attach the support member 30 to the bobbin support shaft 26, as shown in FIGS.
The insertion hole 50 of the bobbin support shaft 26 is provided, and in this insertion hole 50,
A fixing pin 29 orthogonal to the axis is provided. Also,
On the shaft head 26a having a tapered outer surface of the bobbin support shaft 26, a split groove 51 having a width slightly smaller than the diameter of the fixing pin 29 is provided, and the fixing pin 29 is provided on an opposing surface in the split groove 51. A recess 52 to be fitted is provided. The recess 52 is provided on the support shaft 26.
The split shaft head 26a is configured to be able to accommodate the fixing pin 29 in a state where it is slightly elastically opened.
In the recess 52, the fixed pin 29 is held in an elastic pressing and holding state by the divided shaft head 26a of the support shaft 26. Further, the outer peripheral surface of the shaft head 26a is formed in a tapered shape to allow elastic deformation at the time of insertion.
In order to prevent rattling in a state where 26 is completely inserted into the insertion hole 50, the divided base 26b of the divided shaft head 26a to be inserted into the insertion hole 50 at that time is inserted into the insertion hole 50. It is tightly fitted.

上記固定ピン29としては、各種のピンを用いることが
でき、例えば、棒状をなす通常のピン、一部に割れ目を
有する中空状のピン、固定ピン自体が弾性的に径変化す
るようにしたものなどである。As the fixing pin 29, various pins can be used, for example, a normal pin having a rod shape, a hollow pin having a crack in a part thereof, and a fixing pin itself in which the diameter of the fixing pin itself changes elastically. And so on.

ボビン支持軸26に対して高張力機構21の支持部材30を
装着するに際しては、図7A〜Ｃに順を追って示すよう
に、ボビン支持軸26の分割された軸頭26aに高張力機構2
1の支持部材30に設けた嵌挿穴50を圧嵌すればよく、そ
れにより、ボビン支持軸26の軸頭26aが、同図Ｂに示す
ように、弾性的に変形しながら嵌挿穴50に嵌入し、同図
Ｃのように、軸頭26aに設けた一対の凹部52内に嵌挿穴5
0内の固定ピン29が落ち込むことにより、両者が連結さ
れる。この場合に、嵌挿穴50内の固定ピン29に対してボ
ビン支持軸26の軸頭26aが弾性的に圧接するので、ボビ
ン支持軸26に対して軸方向及び回転方向の動きを安定的
に拘束して支持部材30が連結される。When the support member 30 of the high tension mechanism 21 is mounted on the bobbin support shaft 26, as shown in FIGS. 7A to 7C, the high tension mechanism 2 is attached to the divided shaft head 26a of the bobbin support shaft 26.
It suffices to press-fit the insertion hole 50 provided in the first support member 30, whereby the shaft head 26a of the bobbin support shaft 26 is elastically deformed as shown in FIG. As shown in FIG. 4C, the insertion hole 5 is inserted into a pair of recesses 52 provided in the shaft head 26a.
When the fixing pin 29 in 0 is dropped, both are connected. In this case, since the shaft head 26a of the bobbin support shaft 26 is elastically pressed against the fixing pin 29 in the fitting hole 50, the movement in the axial direction and the rotation direction with respect to the bobbin support shaft 26 is stably performed. The support member 30 is connected by being restrained.

ボビン23の交換等のためにボビン支持軸26から張力制
御部21を取り外すには、その張力制御部21の支持部材30
を持って単純に引き上げればよい。したがってキャリヤ
20の中心にボビン支持軸26を立設した糸張力付与装置に
おいても、支持部材30の取り外しによりボビン23を簡単
に交換でき、しかもその交換を工具などを用いることな
く容易に行うことができる。To remove the tension control unit 21 from the bobbin support shaft 26 for replacing the bobbin 23 or the like, the support member 30 of the tension control unit 21
And simply raise it. Therefore the carrier
Even in the yarn tension applying device in which the bobbin support shaft 26 is provided upright at the center of the bobbin 20, the bobbin 23 can be easily replaced by removing the support member 30, and the replacement can be easily performed without using a tool or the like.

図８は、上記支持部材30の取付機構の他の実施例を示
している。この取付機構は、前記実施例の高張力機構21
における支持部材30の一部として構成されるＵ形状支持
部材55を備え、この支持部材55内にボビン支持軸26の嵌
挿穴56を形設し、支持部材55の両辺55aに設けたＥ形の
ピン支持穴57に、Ｓ字状に折曲した弾性ピン58を嵌装
し、嵌挿穴56の一側に弾性ピン58の中央部58aを弾性的
に変位可能に架設し、ボビン支持軸26の先端部側面に上
記弾性ピン58の中央部58aが嵌入する凹部59を設け、こ
の凹部59内において弾性ピン58をボビン支持軸26に弾性
的に圧接させている。FIG. 8 shows another embodiment of the mounting mechanism of the support member 30. This mounting mechanism is the high tension mechanism 21 of the above-described embodiment.
And a U-shaped support member 55 configured as a part of the support member 30 in which the insertion hole 56 of the bobbin support shaft 26 is formed in the support member 55 and provided on both sides 55a of the support member 55. An elastic pin 58 bent in an S-shape is fitted into the pin supporting hole 57, and a central portion 58a of the elastic pin 58 is erected on one side of the fitting insertion hole 56 so as to be elastically displaceable. A concave portion 59 into which the central portion 58a of the elastic pin 58 is fitted is provided on the side surface of the distal end of the elastic pin 58, and the elastic pin 58 is elastically pressed against the bobbin support shaft 26 in the concave portion 59.

したがって、前記実施例では支持軸26の軸頭26aが主
体的に変形するのに対し、この実施例では弾性ピン58が
変形する点で相違するが、嵌挿穴56をボビン支持軸26に
圧嵌するだけで、実質的に同様な作用で両者を結合する
ことができる。Therefore, in the above embodiment, the shaft head 26a of the support shaft 26 is mainly deformed, whereas in this embodiment, the elastic pin 58 is deformed, but the fitting hole 56 is pressed against the bobbin support shaft 26. Just by fitting, both can be connected by substantially the same action.

前記低張力機構22を構成するうず巻き状の戻しスプリ
ング43は、図３及び図４に示すように、その内端をボビ
ン連結部材27の筒軸部27aに固定し、外端側にスプリン
グ収容室42の内周面のノッチ45に係合するフック44を設
けているが、このフックは、図９に明瞭に示すように、
戻しスプリング43の切り起しによって形成したフック61
とすることができる。As shown in FIGS. 3 and 4, the spiral-shaped return spring 43 constituting the low-tension mechanism 22 has an inner end fixed to the cylindrical shaft portion 27a of the bobbin connecting member 27, and a spring housing chamber on the outer end side. A hook 44 is provided which engages a notch 45 on the inner peripheral surface of 42. This hook, as clearly shown in FIG.
Hook 61 formed by raising and returning return spring 43
It can be.

また、図10に示すように、戻しスプリング43と同様な
うず巻き状の戻しスプリング62に切欠き穴63を設け、キ
ャリヤ20に設けたスプリング収容室64の内周面にその切
欠き穴63を係合させる適数のフック65を設けることもで
きる。低張力機構をこのように構成しても、その動作は
前記実施例と同様である。いずれにしても、戻しスプリ
ング43,62の外端部とスプリング収容室42,64の内面との
間に、戻しスプリングの外端部が巻き締めにより縮径し
たときに互いの係合が外れるような係合用凹凸を設け、
しかもその係合が外れたときの巻き戻しに伴って戻しス
プリングが大径へ復帰したときに、その係合用凹凸が再
係合を行うようなものであればよい。Also, as shown in FIG. 10, a notch hole 63 is provided in a spiral wound return spring 62 similar to the return spring 43, and the notch hole 63 is engaged with an inner peripheral surface of a spring accommodating chamber 64 provided in the carrier 20. An appropriate number of hooks 65 to be combined may be provided. Even if the low tension mechanism is configured in this manner, its operation is the same as that of the above-described embodiment. In any case, between the outer ends of the return springs 43, 62 and the inner surfaces of the spring accommodating chambers 42, 64, the outer ends of the return springs are disengaged from each other when the diameter thereof is reduced by winding. Providing irregular engagement irregularities,
In addition, it is sufficient that the engaging concave and convex portions re-engage when the return spring returns to a large diameter with the rewinding when the engagement is released.

このような戻しスプリング43,62は、その内端を連結
したボビン連結部材27の筒軸部27aの回転により巻き上
げられるとき、最初に、巻き径が拡大してスプリング収
容室42,64の内周面に密着していた戻しスプリングが、
内端側から次第に縮径し、最終的にその戻しスプリング
の外端が小径化して、戻しスプリングの外端部とスプリ
ング収容室内との凹凸による係合が外れるようであれ
ば、戻しスプリングによる糸条の引き戻し量を大きくす
ることができるが、ボビン連結部材27の筒軸部27aの回
転により戻しスプリングの径が常に全体的に小さくなる
ように巻き上げられると、全体が十分に巻き締められる
前に上記凹凸による係合が外れる可能性がある。When the return springs 43 and 62 are wound up by the rotation of the cylindrical shaft portion 27a of the bobbin connecting member 27 having their inner ends connected, first, the winding diameter is enlarged and the inner circumferences of the spring housing chambers 42 and 64 are increased. The return spring that was in close contact with the surface,
If the diameter of the return spring gradually decreases from the inner end side and finally the outer end of the return spring is reduced in diameter, and the outer end of the return spring and the spring receiving chamber become disengaged due to unevenness, the thread by the return spring is used. Although it is possible to increase the amount of retraction of the strip, if it is wound up so that the diameter of the return spring is always reduced as a whole by rotation of the cylindrical shaft portion 27a of the bobbin connecting member 27, before the whole is sufficiently wound up There is a possibility that the engagement due to the unevenness may be released.

このような問題は、図11A〜Ｃによって以下に説明す
るように、巻き径の内側の剛性を弱く、外側の剛性を大
きくした戻しスプリングを用いることにより解消するこ
とができる。Such a problem can be solved by using a return spring whose rigidity inside the winding diameter is weak and whose rigidity outside the winding diameter is increased, as described below with reference to FIGS.

図11A,Bは、それを実現するための基本的構成を示す
もので、図11Aの戻しスプリング71では、板厚が一定の
板バネにおける基端側（巻き上げ時の内端側）の板巾を
小さく、先端側にいくに従ってその板巾を大きくし、そ
れによって戻しスプリング71における巻き径の内側の剛
性を弱く、外側の剛性を大きく形成している。この戻し
スプリング71の先端部には、スプリング収容室内に列設
した凸部（図12により後述）に係合する多数の係合孔72
を列設している。また、図11Bの戻しスプリング73で
は、板巾が一定の板バネにおける基端側の板厚を小さ
く、先端側にいくに従ってその板厚を大きくし、それに
よって戻しスプリング73における巻き径の内側の剛性を
弱く、外側の剛性を大きく形成している。そして、この
戻しスプリング73の先端部にも、同様にスプリング収容
室内の凸部に係合する多数の係合孔74を列設している。FIGS. 11A and 11B show a basic configuration for realizing this. In the return spring 71 shown in FIG. 11A, the width of the base end side (the inner end side at the time of winding up) of a leaf spring having a constant thickness is shown. And the plate width is increased toward the distal end, thereby reducing the rigidity inside the winding diameter of the return spring 71 and increasing the rigidity outside. At the distal end of the return spring 71, there are provided a large number of engaging holes 72 which engage with convex portions (described later with reference to FIG. 12) arranged in the spring accommodating chamber.
Are arranged. Further, in the return spring 73 of FIG. 11B, the plate width at the base end side of the plate spring having a constant plate width is reduced, and the plate thickness is increased toward the distal end side, whereby the inside of the winding diameter of the return spring 73 is reduced. The rigidity is low and the outside rigidity is large. A large number of engagement holes 74 are also provided at the distal end of the return spring 73 to similarly engage with the projections in the spring accommodating chamber.

さらに、図11C及び図12の例では、剛性の小さい基端
側スプリング75aの先端に、剛性の高い先端側スプリン
グ75bを連結し、これによって、巻き径の内側の剛性を
弱く、外側の剛性を大きくした戻しスプリング75を形成
している。そして、先端側スプリング75bには、図11A,
同Ｂの場合と同様に、スプリング収容室内の凸部に係合
する多数の係合孔76を列設している。また、その先端側
スプリング75bの基端には係合頭78を設け、それを基端
側スプリング75aの先端に列設した係止孔77のいずれか
に通して、その孔縁に係止させ、これによって、全体的
な長さをある程度調整しながら、戻しスプリング75の基
端側と先端側の剛性を適切に設定できるようにしてい
る。しかしながら、この基端側スプリング75aと先端側
スプリング75bとは、例えば溶接で連結するなど、任意
の手段で連結することもできる。Further, in the examples of FIGS. 11C and 12, a distal end spring 75b having high rigidity is connected to the distal end of the proximal spring 75a having low rigidity, whereby the internal rigidity of the winding diameter is reduced and the external rigidity is reduced. An enlarged return spring 75 is formed. 11A and 11B.
Similarly to the case B, a number of engagement holes 76 are arranged in a row to engage with the convex portions in the spring accommodating chamber. Further, an engagement head 78 is provided at the base end of the distal side spring 75b, and is passed through one of the locking holes 77 arranged at the distal end of the base side spring 75a to be locked at the edge of the hole. Thus, the rigidity of the return spring 75 at the proximal end and the distal end can be appropriately set while adjusting the overall length to some extent. However, the proximal spring 75a and the distal spring 75b can be connected by any means, for example, by welding.

図12は、上記図11Cの戻しスプリング75を用いる場合
の低張力機構の構成を示すもので、キャリヤ20を構成す
るキャリヤ本体81にボビン支持軸82を立設すると共に、
その支持軸82にボビン連結部材の筒軸部83aを回転自在
に支持させ、キャリヤ本体81とその上に固定的に取り付
けるケーシング84との間にスプリング収容室85を形成
し、このスプリング収容室85に戻しスプリング75を収容
するように構成している。戻しスプリング75は、その基
端側スプリング75aの基端を上記筒軸部83aに連結し、う
ず巻き状に捲回してその先端に連結した剛性の高い先端
側スプリング75bをスプリング収容室85の内周面に圧接
させているが、そのスプリング収容室85の内周面には、
先端側スプリング75bに列設した多数の係合孔76が嵌入
する多数の角錐台形の突子86を、上記係合孔76と同一ピ
ッチで列設している。FIG. 12 shows a configuration of a low tension mechanism when the return spring 75 of FIG. 11C is used, and a bobbin support shaft 82 is erected on a carrier main body 81 constituting the carrier 20,
The support shaft 82 rotatably supports the cylindrical shaft portion 83a of the bobbin connecting member, and a spring accommodating chamber 85 is formed between the carrier body 81 and a casing 84 fixedly mounted thereon. The spring 75 is configured to be housed. The return spring 75 connects the base end of the base end side spring 75a to the cylindrical shaft portion 83a, and winds it in a spiral shape to form a highly rigid front end side spring 75b connected to the front end of the inner circumference of the spring accommodating chamber 85. Surface, but on the inner peripheral surface of the spring storage chamber 85,
A large number of truncated pyramid-shaped protrusions 86 into which the large number of engagement holes 76 arranged in the tip side spring 75b are fitted are arranged at the same pitch as the engagement holes 76.

従って、前記図１〜４の実施例と同様に、糸条の導出
により、ボビン及び図示を省略したボビン連結部材を介
してその筒軸部83aが回転し、その回転に伴う戻しスプ
リング75の巻き上げにより該戻しスプリング75が小径化
し、その巻上げ量が巻上げ限界を越えると、先端側スプ
リング75bの係合孔76がスプリング収容室85の内周面に
設けた角錐台形の突子86から外れ、戻しスプリング75が
それ自体の付勢力で巻き戻し方向に回転する。これに伴
って、戻しスプリング75の径は大きくなり、先端側スプ
リング75bの係合孔76がボビン回転方向に１ピッチだけ
ずれて、それらの係合孔76が再び隣接する突子86に係合
し、戻しスプリング75の付勢力が若干低下してもとの状
態に復帰する。Accordingly, similarly to the embodiment shown in FIGS. 1 to 4, the thread is led out to rotate the cylindrical shaft portion 83a via the bobbin and a bobbin connecting member (not shown), and the return spring 75 is wound up with the rotation. When the return spring 75 is reduced in diameter and the amount of winding exceeds the winding limit, the engaging hole 76 of the tip side spring 75b is disengaged from the truncated pyramid-shaped protrusion 86 provided on the inner peripheral surface of the spring accommodating chamber 85. The spring 75 rotates in the rewind direction by its own biasing force. Accordingly, the diameter of the return spring 75 increases, and the engaging holes 76 of the distal spring 75b are shifted by one pitch in the bobbin rotation direction, and the engaging holes 76 again engage with the adjacent protrusions 86. Then, even if the urging force of the return spring 75 slightly decreases, the state returns to the original state.

この場合に、上記基端側スプリング75aの剛性を小さ
く、先端側スプリング75bの剛性の高くしているので、
剛性の弱い基端側スプリング75aは比較的容易に変形し
て巻き締められるが、剛性が大きい先端側スプリング75
bは、基端側スプリング75aからの力がある程度大きくな
った後でなければ縮径のための大きな変形を行うことが
なく、そのため、戻しスプリング75の全体が十分に巻き
締められてから、先端側スプリング75bの係合孔76がボ
ビン回転方向に１ピッチだけずれ動いて各係合孔76が隣
接突子86に係合することになり、戻しスプリング75の付
勢力が安定的に略一定に保持される。In this case, the rigidity of the proximal spring 75a is small and the rigidity of the distal spring 75b is high.
The proximal spring 75a, which has low rigidity, is relatively easily deformed and tightened, but the distal spring 75, which has high rigidity, is relatively rigid.
b does not undergo large deformation for diameter reduction until after the force from the proximal side spring 75a has increased to some extent, so that the entire return spring 75 is fully wound and tightened. The engagement holes 76 of the side springs 75b are shifted by one pitch in the bobbin rotation direction, and each engagement hole 76 is engaged with the adjacent projection 86, so that the biasing force of the return spring 75 is stably and substantially constant. Will be retained.

上述した実施例にいては、図１、図7A〜Ｃ及び図８等
から明らかなように、キャリヤ20の中心にボビン支持軸
26を固定的に立設し、このボビン支持軸26にボビン23を
回転自在に嵌挿して、ボビン支持軸26の先端に高張力機
構21の支持部材30を着脱自在に取り付けているが、図13
〜15に示す実施例のように、キャリヤ20の中心にボビン
支持軸26を回転不能にして着脱自在に立設し、ボビン23
をボビン支持軸26や高張力機構の支持部材と共にキャリ
ヤ20から着脱自在とすることができる。なお、図13で
は、高張力機構やその支持部材の構成、支持部材とボビ
ン支持軸との取付構造などの図示を省略しているが、こ
の実施例では支持部材とボビン支持軸とを固定的に連結
する点を除いて上記実施例と実質的に同じ構成を備える
ことになる。In the embodiment described above, the bobbin support shaft is provided at the center of the carrier 20, as is apparent from FIGS.
The bobbin 23 is rotatably inserted into the bobbin support shaft 26, and the support member 30 of the high tension mechanism 21 is detachably attached to the tip of the bobbin support shaft 26. 13
As in the embodiments shown in FIGS. 15 to 15, the bobbin support shaft 26 is non-rotatably mounted at the center of the
Can be detached from the carrier 20 together with the bobbin support shaft 26 and the support member of the high tension mechanism. In FIG. 13, the illustration of the structure of the high tension mechanism and its supporting member, the mounting structure of the supporting member and the bobbin supporting shaft, and the like are omitted, but in this embodiment, the supporting member and the bobbin supporting shaft are fixed. Except that it is connected to the above-described embodiment.

図13〜15に示す実施例の構成について具体的に説明す
ると、この実施例では、キャリヤ20を構成するキャリヤ
本体91内に、ボビン支持軸92を着脱自在に取り付けるた
めの嵌挿穴93を設け、キャリヤ本体91の底部において
は、その嵌挿穴93の周りに両端部内側えぐり取られた長
円形の溝94を凹設し、Ｕ字状に折曲したＵ型ピン95をそ
の溝94内に容易に離脱しないように嵌装して、該Ｕ型ピ
ン95をその両脚部95aが嵌挿穴93を挟むようにして溝94
内に架設している。一方、ボビン支持軸92の先端には、
両側面に上記Ｕ型ピン95の両脚部95aを押し拡げるテー
パー部96を設けると共に、そのテーパー部分96を越えた
Ｕ型ピン95の脚部95aが嵌入する凹部97を設け、ボビン
支持軸92の挿着時に、この凹部97内においてＵ型ピン95
の脚部95aによりボビン支持軸92ボビン支持軸を弾性的
な押圧挟持状態で保持させている。なお、この実施例に
おける低張力機構22の構成は、図12に示した場合と実質
的に同一である。The configuration of the embodiment shown in FIGS. 13 to 15 will be specifically described.In this embodiment, a fitting hole 93 for detachably attaching a bobbin support shaft 92 is provided in a carrier main body 91 constituting the carrier 20. At the bottom of the carrier body 91, an oval groove 94 which is cut out inside at both ends is recessed around the insertion hole 93, and a U-shaped pin 95 bent in a U-shape is inserted into the groove 94. The U-shaped pin 95 is inserted into the groove 94 so that its legs 95a sandwich the insertion hole 93.
It is erected inside. On the other hand, at the tip of the bobbin support shaft 92,
A tapered portion 96 is provided on both sides to push and expand both legs 95a of the U-shaped pin 95, and a concave portion 97 is provided for fitting the leg 95a of the U-shaped pin 95 beyond the tapered portion 96. At the time of insertion, the U-shaped pin 95
The bobbin support shaft 92 is held in an elastic pressing state by the leg portions 95a. Note that the configuration of the low tension mechanism 22 in this embodiment is substantially the same as that shown in FIG.

このように構成すると、繊維機械の運転開始やボビン
23の交換に際し、ボビン23をボビン支持軸92及びそれに
取付けた高張力機構の支持部材などと共にキャリヤ本体
91から取り外して、糸ガイドに対する糸通しなどの糸条
の準備を行うことができ、その際、ボビン支持軸92にボ
ビン23を保持させた状態で作業を行うことができるの
で、上記糸条の準備を一層容易に行うことが可能にな
る。With this configuration, the start of operation of the textile machine and the bobbin
When replacing the 23, the bobbin 23 is attached to the carrier body together with the bobbin support shaft 92 and the support member of the high tension mechanism attached thereto.
The thread can be removed from the thread guide 91 to prepare a thread such as a thread for the thread guide. At this time, the operation can be performed while the bobbin 23 is held on the bobbin support shaft 92. Preparation can be performed more easily.

フロントページの続き (31)優先権主張番号特願平5 −90835 (32)優先日平５(1993)３月25日 (33)優先権主張国日本（ＪＰ） (56)参考文献特開平２−182953（ＪＰ，Ａ) 特開平２−264055（ＪＰ，Ａ) 特開平４−50345（ＪＰ，Ａ) 特開平４−41756（ＪＰ，Ａ) 特開平３−19947（ＪＰ，Ａ) 特公平４−47054（ＪＰ，Ｂ２) 実公昭52−36062（ＪＰ，Ｙ１) 米国特許4312261（ＵＳ，Ａ)Continued on the front page (31) Priority claim number Japanese Patent Application No. Hei 5-90835 (32) Priority date Hei 5 (1993) March 25 (33) Priority claim country Japan (JP) (56) References JP JP-A-2-129553 (JP, A) JP-A-2-264055 (JP, A) JP-A-4-50345 (JP, A) JP-A-4-41756 (JP, A) JP-A-3-19947 (JP, A A) Japanese Patent Publication No. 4-47054 (JP, B2) Japanese Utility Model Publication No. 52-36062 (JP, Y1) US Pat. No. 4,123,261 (US, A)

Claims

(57) [Claims]

1. A three-dimensional woven fabric in which a carrier of a yarn arranged on a carrier moving surface is caused to travel along a required trajectory in the moving surface by a carrier driving mechanism, and the yarns held by the carrier are organized into one another. A yarn tension applying method for a textile machine for weaving a yarn, wherein a high tension mechanism provided on the carrier reduces a high tension with a small amount of retraction and a large feeding tension with respect to a yarn led out from a bobbin. The low tension mechanism provided between the carrier and the bobbin provides a large tension with respect to the bobbin and a rotation for low tension with a small unreeling tension, and the high tension mechanism when the yarn is unreeled. A large thread tension is applied to the yarn, and at the time of retraction, a small thread tension is applied by a low tension mechanism from a point beyond the retraction limit of the high tension mechanism. Method for imparting yarn tension to textile machinery.

2. A three-dimensional woven fabric in which a carrier of a yarn arranged on a carrier moving surface is caused to travel along a required trajectory in the moving surface by a carrier driving mechanism, and the yarns held by the carrier are organized into one another. A yarn tension applying device for a textile machine for weaving, comprising a high tension mechanism on the carrier, which has a small pullback amount and a large feeding tension with respect to a yarn led out from a bobbin, and Between the bobbin and
A low tension mechanism having a large amount of retraction and a small unreeling tension is provided.The high tension mechanism applies a large thread tension to the yarn when the yarn is unreeled. A yarn tension applying device for a textile machine, wherein a small yarn tension is applied to a yarn from a position beyond a retraction limit of a high tension mechanism.

3. A high tension mechanism in the yarn tension applying device according to claim 2, wherein the support member attached to the bobbin support shaft on the carrier is provided with a claw that is engaged with and disengaged from a claw portion of a clutch provided on the bobbin. When a certain tension of the derived thread acts on the tip of the tension applying lever, the above-mentioned claw is disengaged from the clutch by the tension of the thread. A thread guide for tilting the tension applying lever in the direction, and a high tension applying means for applying a high tension to the yarn at the other end of the lever. Yarn tension applying device.

4. The fiber according to claim 3, wherein a tension spring for applying an urging force to an end of the tension applying lever is used as the high tension applying means. Yarn tensioning device for machines.

5. A low tension mechanism in the yarn tension applying device according to any one of claims 2 to 3, wherein a spring accommodating chamber is provided around a bobbin support shaft on the carrier to form a spiral winding. A return spring is accommodated, an inner end of the return spring is rotatably fitted to the bobbin support shaft, and is fixed to a bobbin connecting member connected to the bobbin. When the winding amount exceeds the winding limit, the spring is disengaged by reducing the diameter of the spring, and is re-engaged by returning to the large diameter following the unwinding as a result. A yarn tension applying device for a textile machine, which is engaged with an inner peripheral surface.

6. The yarn tension applying device according to claim 2, wherein the bobbin is rotatably inserted into a bobbin support shaft erected at the center of the carrier. A support member provided with a thread guide that unwinds from the bobbin and is drawn out from above the bobbin support shaft, is non-rotatably attached and detachably attached. Tension applying device.

7. The yarn tension applying device according to claim 6, wherein a fixing pin is erected in a fitting hole at a tip of the bobbin support shaft provided on the bobbin support shaft when the support member is attached to the bobbin support shaft. A split groove having a width smaller than the diameter of the fixing pin is provided at the end of the bobbin support shaft, and a concave portion is provided on the opposing surface in the split groove so that the fixing pin fits therein. A yarn tension applying device for a textile machine, which is held in a sandwiched state.

8. The yarn tension applying device according to claim 6, wherein, when the support member is attached to the bobbin support shaft, an elastic pin is erected in a fitting hole at a tip of the bobbin support shaft provided on the support member. A concave portion in which the elastic pin fits in a side surface of a tip end portion of the bobbin supporting shaft, and the elastic pin is elastically pressed against the bobbin supporting shaft in the concave portion. apparatus.

9. The yarn tension applying device according to claim 2, wherein the bobbin support shaft is non-rotatably mounted at the center of the carrier so as to be detachably erected, and the bobbin is mounted on the bobbin support shaft. A fiber rotatably fitted thereto, and a support member provided with a guide for unwinding the yarn unwound from the bobbin and leading out from above the bobbin support shaft is attached to a tip of the bobbin support shaft. Yarn tensioning device for machines.

10. The bobbin support shaft according to claim 9, wherein a U-shaped pin is erected in a fitting hole of the bobbin support shaft provided on the carrier when the bobbin support shaft is attached to the carrier. A tapered portion for pushing and expanding the U-shaped pin is provided at the end of the U-shaped pin, and a concave portion for fitting the U-shaped pin beyond the tapered portion is provided. In this concave portion, the bobbin support shaft is elastically pressed and clamped by the U-shaped pin. A yarn tension applying device for a textile machine, characterized by being held by:

11. A yarn tension applying device according to claim 4, wherein a tension spring is fitted over a guide shaft provided on a support member on the bobbin support shaft, and the tension spring is connected to an end of a tension applying lever. And a groove for fixing the spring receiver on the guide shaft are arranged at an appropriate interval, and an elastic ring is inserted into any of those grooves. Wherein the spring receiver is locked to adjust the biasing force of the tension spring acting on the end of the lever.

12. The textile machine according to claim 5, wherein the spiral return spring has a lower rigidity inside the winding diameter and a higher rigidity outside. Tension applying device for

13. The thread tension applying device according to claim 12, wherein the helical return spring is connected to a distal end of a weaker rigid proximal end spring by a rigid distal end spring. A yarn tension applying device for a textile machine, comprising: