JP2008297677A - Fiber strand-guiding device in spinning machine - Google Patents

Fiber strand-guiding device in spinning machine Download PDF

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Publication number
JP2008297677A
JP2008297677A JP2007147177A JP2007147177A JP2008297677A JP 2008297677 A JP2008297677 A JP 2008297677A JP 2007147177 A JP2007147177 A JP 2007147177A JP 2007147177 A JP2007147177 A JP 2007147177A JP 2008297677 A JP2008297677 A JP 2008297677A
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Prior art keywords
guide
fiber bundle
piezoelectric element
spinning machine
guide member
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JP2007147177A
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Japanese (ja)
Inventor
Koji Maeda
浩司 前田
Kazuo Seiki
和夫 清木
Naoki Maruyama
直樹 丸山
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Toyota Industries Corp
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Toyota Industries Corp
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Priority to JP2007147177A priority Critical patent/JP2008297677A/en
Priority to CN2008101098336A priority patent/CN101314876B/en
Priority to DE200860000689 priority patent/DE602008000689D1/en
Priority to EP20080157270 priority patent/EP2009152B1/en
Publication of JP2008297677A publication Critical patent/JP2008297677A/en
Pending legal-status Critical Current

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    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01HSPINNING OR TWISTING
    • D01H5/00Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70Constructional features of drafting elements
    • D01H5/72Fibre-condensing guides

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
  • Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fiber strand-guiding device in a spinning machine, which is capable of increasing energy efficiency of exciting means for exciting a guiding member for guiding the fiber strand in a non-contact state and readily ensuring a space necessary for installation. <P>SOLUTION: The fiber guiding device 30 includes a guide member 31 having a guide face for narrowing the width of a fiber strand in a moving direction of the fiber strand to be guided, and exciting means 32 of vibrating the guide member 31 so as to generate acoustic pressure for preventing contact of the fiber strand onto the guide face. A vibrator 37 consisting the exciting means 32 is constituted in a form in which a piezoelectric element 34 and a mounting bracket 33 are interposed between a pair of connecting members 35 and 36. An oscillator 39 outputs voltage having a prescribed frequency to the piezoelectric element 34 so that connecting members 35 and 36 carry out vertical vibration in which the position of the mounting bracket 33 becomes a node and the position of the guide member 31 becomes a velly. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、紡機における繊維束案内装置に係り、詳しくは繊維束を非接触状態で案内する紡機の繊維束案内装置に関する。   The present invention relates to a fiber bundle guide device in a spinning machine, and more particularly to a fiber bundle guide device in a spinning machine that guides a fiber bundle in a non-contact state.

リング精紡機において、ドラフトされた繊維束を撚り掛けの前に予め集束し、むらが少ない、毛羽が少ない等の糸品質の向上を目的とした繊維束集束装置が種々提案されている。そして、繊維束の集束方法としては、機械的なガイド(コレクター)を用いる方法や、多孔ベルト(通気エプロン)上を移動する繊維束に吸引気流を作用させる方法が一般的である。   In the ring spinning machine, various fiber bundle concentrating devices have been proposed for the purpose of improving the yarn quality such that the drafted fiber bundle is preliminarily converged before twisting and there is little unevenness and less fluff. As a method for converging the fiber bundle, a method using a mechanical guide (collector) and a method of causing a suction airflow to act on the fiber bundle moving on the perforated belt (ventilated apron) are generally used.

しかし、これらの方法では、繊維束と接触して繊維束を案内するため、繊維束中の繊維配列を乱さないために、案内部材の表面の摩擦を低減させる対策が必要であり、対策を施しても経時的に性能が劣化する。この問題を解消するため、繊維束に接触せずに繊維束を案内することができ、摩耗や異物の付着によって案内面の摩耗状態が経時的に劣化するのを防止する繊維束案内装置が提案されている(特許文献1参照。)。特許文献1の繊維束案内装置では、案内すべき繊維束の移動方向に沿って繊維束の幅を狭める案内面を備えた案内部材として2枚の板をそれぞれ専用の振動子で励振させる構成が採用されている。
特開2007−9391号公報
However, in these methods, since the fiber bundle is guided in contact with the fiber bundle, it is necessary to take measures to reduce the friction on the surface of the guide member in order not to disturb the fiber arrangement in the fiber bundle. However, the performance deteriorates with time. In order to solve this problem, a fiber bundle guiding device that can guide the fiber bundle without contacting the fiber bundle and prevents the wear state of the guide surface from deteriorating due to wear or adhesion of foreign matter is proposed. (See Patent Document 1). In the fiber bundle guide device of Patent Document 1, a configuration in which two plates are each excited by a dedicated vibrator as a guide member having a guide surface that narrows the width of the fiber bundle along the moving direction of the fiber bundle to be guided. It has been adopted.
JP 2007-9391 A

ところが、特許文献1の繊維束案内装置のように、案内部材を構成する2枚の板をそれぞれ専用の振動子で励振させる構成では小型化が難しく、リング精紡機の各錘の繊維束の通過経路に案内部材を設けるスペースを確保するのが難しい。   However, as in the fiber bundle guiding device of Patent Document 1, it is difficult to reduce the size by using a structure in which the two plates constituting the guide member are excited by dedicated vibrators, and the fiber bundle of each spindle of the ring spinning machine passes through. It is difficult to secure a space for providing a guide member in the route.

そこで、図8に示すように、1つの案内部材51を1つの振動子52で励振させる構成が考えられる。この繊維束案内装置は振動子52を構成する圧電素子53に対して案内部材51が固定される側と反対側の端部において取付け用ブラケット54に取り付けられる構成である。この構成では1錘に必要な振動子52は1つで済むが、インピーダンスが高く図示しない発振器を含めた励振手段のエネルギー効率が低い。   Therefore, as shown in FIG. 8, a configuration in which one guide member 51 is excited by one vibrator 52 is conceivable. This fiber bundle guide device is configured to be attached to the mounting bracket 54 at the end opposite to the side where the guide member 51 is fixed with respect to the piezoelectric element 53 constituting the vibrator 52. In this configuration, only one vibrator 52 is required for one spindle, but the impedance is high and the energy efficiency of the excitation means including an oscillator (not shown) is low.

本発明は、前記の問題に鑑みてなされたものであって、その目的は繊維束を非接触状態で案内する案内部材を励振する励振手段のエネルギー効率を高めることができ、設置に必要なスペースを確保するのが容易になる紡機における繊維束案内装置を提供することにある。   The present invention has been made in view of the above problems, and its purpose is to increase the energy efficiency of the excitation means for exciting the guide member for guiding the fiber bundle in a non-contact state, and the space required for installation. It is an object of the present invention to provide a fiber bundle guide device in a spinning machine that makes it easy to ensure the above.

前記の目的を達成するため、請求項1に記載の発明は、上流側から下流側へと移動する繊維束の幅を狭めるように案内する紡機における繊維束案内装置であって、紡機に取り付けられた状態において、案内すべき繊維束の移動方向に沿って繊維束の幅を狭める案内面を備えた案内部材と、前記案内面に前記繊維束が接触するのを阻止する音圧を発生するように前記案内部材を振動させる励振手段とを備えている。そして、少なくとも隣接する2錘に対応する間隔で配置される前記案内部材を前記案内部材と直交する方向に延びる棒状の連結部材で連結し、前記連結部材の中間部に圧電素子を介在させて、圧電素子により前記連結部材を縦振動させるように励振する。   In order to achieve the above object, the invention described in claim 1 is a fiber bundle guide device in a spinning machine for guiding the width of a fiber bundle moving from the upstream side to the downstream side, and is attached to the spinning machine. The guide member having a guide surface that narrows the width of the fiber bundle along the moving direction of the fiber bundle to be guided, and a sound pressure that prevents the fiber bundle from contacting the guide surface. Excitation means for vibrating the guide member. And, the guide members arranged at intervals corresponding to at least two adjacent weights are connected by a rod-like connecting member extending in a direction orthogonal to the guide member, and a piezoelectric element is interposed in the intermediate portion of the connecting member, The connecting member is excited to vibrate longitudinally by a piezoelectric element.

圧電素子の片側にのみ連結部材を固定して、その連結部材を励振して縦振動させると、圧電素子の連結部材と反対側への力が無駄になる。しかし、この発明では、少なくとも2錘に対応する間隔で配置される案内部材が連結部材で連結されるとともに、連結部材の中間部に介在する圧電素子により励振されて縦振動する。そのため、圧電素子は振動のエネルギーを有効に利用して両側の連結部材を縦振動させることができる。したがって、繊維束を非接触状態で案内する案内部材を励振する励振手段のエネルギー効率を高めることができる。また、案内部材を個々に独立した励振手段で励振させる構成に比較して、設置に必要なスペースを確保するのが容易になる。   If the connecting member is fixed only on one side of the piezoelectric element and the connecting member is excited to longitudinally vibrate, the force on the side opposite to the connecting member of the piezoelectric element is wasted. However, according to the present invention, the guide members arranged at intervals corresponding to at least two spindles are connected by the connecting member, and are vibrated longitudinally by being excited by the piezoelectric element interposed in the intermediate portion of the connecting member. Therefore, the piezoelectric element can vibrate the connecting members on both sides longitudinally using the vibration energy effectively. Therefore, the energy efficiency of the excitation means for exciting the guide member that guides the fiber bundle in a non-contact state can be increased. In addition, it becomes easier to secure a space necessary for installation as compared with a configuration in which the guide members are individually excited by independent excitation means.

請求項2に記載の発明は、請求項1に記載の発明において、前記圧電素子は、前記連結部材の縦振動の節と対応する位置に設けられた取付け用ブラケットを挟んで両側に一対ずつ設けられている。この発明では、繊維束案内装置を紡機に取り付ける際の取付け用ブラケットが、連結部材の縦振動の節と対応する位置に設けられているため、取付け用ブラケットに余計な振動が伝わることなく、他部位への不要な振動の伝達及び、それに伴う余分なエネルギーの消費がない。また、圧電素子が取付け用ブラケットの両側に一対ずつ設けられているため、取付けブラケット側を接地側の電位とすることができ、接地が容易になる。   According to a second aspect of the present invention, in the first aspect of the present invention, the piezoelectric elements are provided in pairs on both sides with a mounting bracket provided at a position corresponding to the longitudinal vibration node of the connecting member. It has been. In this invention, since the mounting bracket for mounting the fiber bundle guide device to the spinning machine is provided at a position corresponding to the longitudinal vibration node of the connecting member, other vibrations are not transmitted to the mounting bracket. There is no transmission of unnecessary vibrations to the site and the associated energy consumption. In addition, since a pair of piezoelectric elements are provided on both sides of the mounting bracket, the mounting bracket side can be set to the ground side potential, and grounding is facilitated.

請求項3に記載の発明は、請求項1に記載の発明において、前記圧電素子は前記連結部材に挟まれて一対設けられ、前記圧電素子を挟んで設けられた連結部材は前記圧電素子と対向する部分において取付け用ブラケットで支持されている。この発明では、請求項2に記載の発明に比較して、圧電素子の数を容易に少なくすることができる。また、圧電素子の接地側の電位を連結部材と対向する側にすることで、取付け用ブラケットを介して接地することができる。   According to a third aspect of the present invention, in the first aspect of the invention, the piezoelectric element is provided as a pair by being sandwiched by the connecting member, and the connecting member provided by sandwiching the piezoelectric element is opposed to the piezoelectric element. The part to be supported is supported by a mounting bracket. In the present invention, the number of piezoelectric elements can be easily reduced as compared with the invention described in claim 2. Further, by setting the potential on the ground side of the piezoelectric element to the side facing the connecting member, the piezoelectric element can be grounded via the mounting bracket.

請求項4に記載の発明は、請求項1〜請求項3のいずれか一項に記載の発明において、前記案内部材は、2枚の板がスペーサを介して連結されるとともに、前記スペーサと対応する部分において励振される。案内部材として繊維束を案内するガイド部のみ一対の板部が対向する構成とし、振動子に連結されて撓み振動する大部分を1枚の板状あるいはロッド状に構成した場合、ガイド部を所望の振動状態で効率良く大きな振幅で励振させるのが難しい。しかし、この発明では、2枚の板がスペーサを介して連結されるとともに、スペーサと対応する部分において励振される。したがって、ガイド部が効率良く大きな振幅で共振され易くなる。   According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the guide member corresponds to the spacer while two plates are connected via a spacer. It is excited in the part to do. When a guide member that guides the fiber bundle as a guide member is configured so that a pair of plate portions face each other, and most of the guide plate is flexibly vibrated by being connected to a vibrator, the guide portion is desired. It is difficult to excite efficiently with a large amplitude in the vibration state. However, in the present invention, the two plates are connected via the spacer and excited at a portion corresponding to the spacer. Therefore, the guide portion is easily resonated with a large amplitude efficiently.

請求項5に記載の発明は、請求項1〜請求項4のいずれか一項に記載の発明において、前記圧電素子を挟んで設けられた連結部材には前記圧電素子と対向する面に雌ねじ部が形成され、両連結部材は前記圧電素子を遊貫するとともに両側に前記雌ねじ部と螺合する雄ねじ部を有する連結ロッドに螺合することにより前記圧電素子を挟持する状態で連結されている。この発明では、圧電素子と連結部材を対称な状態で連結することができ、振動系のインピーダンスを低減させて効率良く励振させることができる。   According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the connecting member provided with the piezoelectric element interposed therebetween has a female screw portion on a surface facing the piezoelectric element. Both connecting members are connected in a state of sandwiching the piezoelectric element by screwing into connecting rods having male threaded portions threadedly engaged with the female threaded portions on both sides while freely passing through the piezoelectric elements. In this invention, the piezoelectric element and the connecting member can be connected symmetrically, and the impedance of the vibration system can be reduced and excited efficiently.

本発明によれば、繊維束を非接触状態で案内する案内部材を励振する励振手段のエネルギー効率を高めることができ、設置に必要なスペースを確保するのが容易になる。   ADVANTAGE OF THE INVENTION According to this invention, the energy efficiency of the excitation means which excites the guide member which guides a fiber bundle in a non-contact state can be improved, and it becomes easy to ensure a space required for installation.

(第1の実施形態)
以下、本発明を精紡機に具体化した一実施形態を図1及び図2にしたがって説明する。
図1(a)に示すように、精紡機を構成するドラフト装置11は、3線式ドラフト部の繊維束進行方向下流側に最終送出ローラ対を備えた4線式の構成である。3線式ドラフト部は、フロントボトムローラ12、ミドルボトムローラ13及びバックボトムローラ14を備えている。ミドルボトムローラ13及びバックボトムローラ14は機台を構成するローラスタンド15に対して前後方向に位置調整可能に固定された支持ブラケット16,17を介して支持されている。
(First embodiment)
Hereinafter, an embodiment in which the present invention is embodied in a spinning machine will be described with reference to FIGS. 1 and 2.
As shown in FIG. 1A, the draft device 11 constituting the spinning machine has a four-wire configuration including a final delivery roller pair on the downstream side in the fiber bundle traveling direction of the three-wire draft unit. The three-wire draft unit includes a front bottom roller 12, a middle bottom roller 13, and a back bottom roller 14. The middle bottom roller 13 and the back bottom roller 14 are supported via support brackets 16 and 17 fixed to a roller stand 15 constituting the machine base so that the position of the middle bottom roller 13 and the back bottom roller 14 can be adjusted in the front-rear direction.

ウエイティングアーム20のフレーム20bには、フロントトップローラ21、ミドルトップローラ22及びバックトップローラ23が、それぞれフロントボトムローラ12、ミドルボトムローラ13及びバックボトムローラ14と対応する位置にトップローラ支持部材を介してそれぞれ支持されている。ウエイティングアーム20にはレバー20aが加圧位置と解放位置とに回動可能に配設されている。レバー20aが図1(a)に示すウエイティングアーム20のフレーム20bと当接する加圧位置に配置された状態では、ウエイティングアーム20に支持された各トップローラ21,22,23をボトムローラ12,13,14側に押圧する加圧位置(紡出位置)にロック状態で保持される。また、レバー20aが図1(a)に示す状態から上方の解放位置に回動された状態では、前記ロック状態が解除されるようになっている。   On the frame 20 b of the weighting arm 20, a front top roller 21, a middle top roller 22, and a back top roller 23 are positioned at positions corresponding to the front bottom roller 12, the middle bottom roller 13, and the back bottom roller 14, respectively. Are supported through each. A lever 20a is disposed on the weighting arm 20 so as to be rotatable between a pressure position and a release position. In a state where the lever 20a is disposed at a pressure position where the lever 20a contacts the frame 20b of the weighting arm 20 shown in FIG. 1A, the top rollers 21, 22, and 23 supported by the weighting arm 20 are moved to the bottom roller 12. , 13 and 14 are held in a locked state at the pressurizing position (spinning position). Further, when the lever 20a is rotated to the upper release position from the state shown in FIG. 1A, the locked state is released.

最終送出ローラ対26は、ローラスタンド15に支持されたボトムニップローラ26aと、ウエイティングアーム20に支持部材を介して支持されたトップニップローラ26bとで構成されている。トップニップローラ26bはドラフト装置11のフロントトップローラ21と同様に2錘毎に、支持部材を介してウエイティングアーム20に支持されている。   The final delivery roller pair 26 includes a bottom nip roller 26a supported by the roller stand 15 and a top nip roller 26b supported by the weighting arm 20 via a support member. Similarly to the front top roller 21 of the draft device 11, the top nip roller 26b is supported by the weighting arm 20 via a support member every two spindles.

図1(a)に示すように、繊維束案内装置30は、最終送出ローラ対26とその直前のローラであるフロントボトムローラ12及びフロントトップローラ21との間に配置されている。図2(a)に示すように、繊維束案内装置30は案内部材31と、案内部材31を振動させる励振手段32とを備えている。   As shown in FIG. 1A, the fiber bundle guide device 30 is disposed between the final delivery roller pair 26 and the front bottom roller 12 and the front top roller 21 which are rollers immediately before the pair. As shown in FIG. 2A, the fiber bundle guide device 30 includes a guide member 31 and excitation means 32 that vibrates the guide member 31.

図2(a)に示すように、励振手段32は、機台への取付け用ブラケット33を挟んで両側に圧電素子34が一対ずつ設けられており、両圧電素子34を挟むように連結部材35,36が設けられている。即ち、励振手段32を構成する振動子37は、一対の連結部材35,36間に圧電素子34及び取付け用ブラケット33を挟み込んだ形で構成されている。連結部材35,36は金属製のロッドで構成されている。振動子37は所謂ランジュバン形振動子を構成し、圧電素子34は一対のリング状のピエゾ素子34a,34bを備えており、両ピエゾ素子34a,34b間にリング状の電極板38が配置されている。   As shown in FIG. 2A, the excitation means 32 is provided with a pair of piezoelectric elements 34 on both sides of the mounting bracket 33 for mounting on the machine base, and the connecting member 35 so as to sandwich both piezoelectric elements 34. , 36 are provided. That is, the vibrator 37 constituting the excitation means 32 is configured such that the piezoelectric element 34 and the mounting bracket 33 are sandwiched between the pair of connecting members 35 and 36. The connecting members 35 and 36 are made of metal rods. The vibrator 37 constitutes a so-called Langevin type vibrator, and the piezoelectric element 34 includes a pair of ring-shaped piezoelectric elements 34a and 34b, and a ring-shaped electrode plate 38 is disposed between the piezoelectric elements 34a and 34b. Yes.

図2(b)に示すように、一方の連結部材35には圧電素子34と対向する面に雌ねじ部35aが形成され、他方の連結部材36には圧電素子34と対向する面に雄ねじ部36aを有するロッド部36bが突出形成されている。そして、連結部材36の雄ねじ部36aが圧電素子34及び電極板38を遊貫し、取付け用ブラケット33の嵌合孔(図示せず)を貫通して連結部材35の雌ねじ部35aに螺合されることにより、両連結部材35,36が、圧電素子34及び電極板38を取付け用ブラケット33に締め付け固定した状態で、取付け用ブラケット33に支持されている。   As shown in FIG. 2B, one connecting member 35 has a female threaded portion 35a on the surface facing the piezoelectric element 34, and the other connecting member 36 has a male threaded portion 36a on the surface facing the piezoelectric element 34. A rod portion 36b having a protrusion is formed. The male screw portion 36a of the connecting member 36 passes through the piezoelectric element 34 and the electrode plate 38, passes through the fitting hole (not shown) of the mounting bracket 33, and is screwed into the female screw portion 35a of the connecting member 35. Thus, the connecting members 35 and 36 are supported by the mounting bracket 33 in a state where the piezoelectric element 34 and the electrode plate 38 are fastened and fixed to the mounting bracket 33.

案内部材31は、案内面31aを構成するように互いに対向して設けられた一対の板状のガイド部31bを備えるとともに、ガイド部31bが1枚の板状の支持部31cに連続する構成に形成され、支持部31cの基端で連結部材35,36の端部に取り付けられている。支持部31cは、連結部材35,36に、例えば、ろう付けで固着されている。図1(b)に示すように、一対のガイド部31bは対向面の間隔、即ち案内面31aの間隔が繊維束Fの進行方向の下流側より上流側が広くなるように形成されている。具体的には、ガイド部31bは、案内面31aの中央より上流側においては上流側程間隔が広くなるように形成されており、中央より下流側においては一定の間隔になるように形成されている。紡出条件によっても異なるが、ガイド部31bは、一対の案内面31aの下流端の間隔が1mm以下に形成されている。   The guide member 31 includes a pair of plate-like guide portions 31b provided to face each other so as to constitute the guide surface 31a, and the guide portion 31b is continuous with one plate-like support portion 31c. It is formed and attached to the ends of the connecting members 35 and 36 at the base end of the support portion 31c. The support portion 31c is fixed to the connecting members 35 and 36 by, for example, brazing. As shown in FIG. 1B, the pair of guide portions 31b are formed such that the interval between the opposing surfaces, that is, the interval between the guide surfaces 31a is wider on the upstream side than the downstream side in the traveling direction of the fiber bundle F. Specifically, the guide portion 31b is formed so that the upstream side is wider on the upstream side than the center of the guide surface 31a, and is formed at a constant interval on the downstream side from the center. Yes. Although different depending on the spinning conditions, the guide portion 31b is formed such that the distance between the downstream ends of the pair of guide surfaces 31a is 1 mm or less.

振動子37は発振器39に接続されている。電極板38は配線40aを介して発振器39と接続され、発振器39の接地端子が配線40bを介して取付け用ブラケット33に接続されている。したがって、圧電素子34は、取付け用ブラケット33に接触する面と、雄ねじ部36aが形成されたロッド部36bを介して取付け用ブラケット33に電気的に接続されている連結部材35,36に接触する面とが電位ゼロとなる状態に設けられている。そして、発振器39は、取付け用ブラケット33が振動の節に位置し、連結部材35,36の案内部材31が固着された端部が振動の腹となるように振動子37を励振させる。また、発振器39は、案内部材31を人の可聴領域より高い周波数で振動させるように振動子37を励振させる。   The vibrator 37 is connected to the oscillator 39. The electrode plate 38 is connected to the oscillator 39 via the wiring 40a, and the ground terminal of the oscillator 39 is connected to the mounting bracket 33 via the wiring 40b. Therefore, the piezoelectric element 34 contacts the connecting members 35 and 36 that are electrically connected to the mounting bracket 33 via the surface that contacts the mounting bracket 33 and the rod portion 36b in which the male screw portion 36a is formed. The surface is provided with a potential of zero. The oscillator 39 excites the vibrator 37 so that the mounting bracket 33 is positioned at the vibration node and the end portion to which the guide member 31 of the connecting members 35 and 36 is fixed becomes an antinode of vibration. Further, the oscillator 39 excites the vibrator 37 so as to vibrate the guide member 31 at a frequency higher than the human audible region.

次に前記のように構成された装置の作用を説明する。
精紡機の運転に先立って、紡出原料に合わせて、ミドルボトムローラ13及びバックボトムローラ14の位置が、支持ブラケット16,17の位置を調整することで適正な位置に調整される。ミドルトップローラ22及びバックトップローラ23の位置もミドルボトムローラ13及びバックボトムローラ14の位置に対応して調整される。
Next, the operation of the apparatus configured as described above will be described.
Prior to the operation of the spinning machine, the positions of the middle bottom roller 13 and the back bottom roller 14 are adjusted to appropriate positions by adjusting the positions of the support brackets 16 and 17 in accordance with the spinning raw material. The positions of the middle top roller 22 and the back top roller 23 are also adjusted corresponding to the positions of the middle bottom roller 13 and the back bottom roller 14.

精紡機が運転されると、繊維束Fはドラフト装置11の3線式ドラフト部でドラフトされた後、案内部材31の案内面31aを介して最終送出ローラ対26のニップ部へと案内され、最終送出ローラ対26から送出される。精紡機の運転時には、発振器39の駆動により、振動子37が案内部材31の所定の共振周波数(例えば、30kHz前後)で励振され、連結部材35,36が縦振動して連結部材35,36を介して案内部材31が撓み振動する。そして、案内面31aに繊維束Fが接触するのを阻止する音圧を発生するように案内部材31が振動され、繊維束Fは非接触状態で案内面31aと対応する位置を通過して集束され、ボトムニップローラ26a及びトップニップローラ26bのニップ点を過ぎた後、撚り掛けを受けながら下流側へ移動し、図示しないボビンに巻き取られる。最終送出ローラ対26はフロントボトムローラ12及びフロントトップローラ21の表面速度より若干速く回転され、繊維束Fは適度な緊張状態で最終送出ローラ対26のニップ点を過ぎた後、転向して撚り掛けを受けながら下流側へ移動する。   When the spinning machine is operated, the fiber bundle F is drafted by the three-line draft portion of the draft device 11, and then guided to the nip portion of the final delivery roller pair 26 through the guide surface 31a of the guide member 31, It is sent from the final delivery roller pair 26. During the operation of the spinning machine, the vibrator 37 is driven by a predetermined resonance frequency (for example, around 30 kHz) of the guide member 31 by driving the oscillator 39, and the connecting members 35 and 36 are longitudinally vibrated to connect the connecting members 35 and 36. The guide member 31 bends and vibrates. Then, the guide member 31 is vibrated so as to generate a sound pressure that prevents the fiber bundle F from contacting the guide surface 31a, and the fiber bundle F passes through a position corresponding to the guide surface 31a in a non-contact state and converges. Then, after passing the nip point of the bottom nip roller 26a and the top nip roller 26b, it moves downstream while being twisted and wound around a bobbin (not shown). The final delivery roller pair 26 is rotated slightly faster than the surface speeds of the front bottom roller 12 and the front top roller 21, and the fiber bundle F is turned and twisted after passing the nip point of the final delivery roller pair 26 in an appropriate tension state. Moves downstream while being hung.

3線式のドラフト部でドラフトされた繊維束Fは、案内面31aを通過する間に幅が1mm以下に圧縮された状態で最終送出ローラ対26へ案内されてニップ点を過ぎる。従って、繊維束案内装置30を装備しない3線式のドラフト装置が装備された精紡機に比較して、毛羽の発生や落綿が抑制されて糸質が改善される。   The fiber bundle F drafted by the three-line draft section is guided to the final delivery roller pair 26 in a state where the width is compressed to 1 mm or less while passing through the guide surface 31a, and passes the nip point. Accordingly, as compared with a spinning machine equipped with a three-wire draft device not equipped with the fiber bundle guide device 30, the generation of fluff and cotton falling is suppressed, and the yarn quality is improved.

繊維束案内装置30は、精紡機の2錘に対応する間隔で配置される案内部材31が、連結部材35,36で連結されるとともに、連結部材35,36の中間部に介在する圧電素子34により励振されて縦振動する。そして、各連結部材35,36の圧電素子34と反対側の端部に固着された両案内部材31が撓み振動されて、各一対のガイド部31bは案内面31aに対して繊維束Fが接触しないような音圧を発生する状態で超音波振動する。そのため、圧電素子34の片側にのみ連結部材を固定して、その連結部材を励振して縦振動させて1つの案内部材31を励振させる構成に比較して、圧電素子34は振動のエネルギーを有効に利用して両側の連結部材35,36を縦振動させることができる。したがって、繊維束Fを非接触状態で案内する案内部材31を励振する励振手段32のエネルギー効率を高めることができる。また、案内部材31を個々に独立した励振手段32で励振させる構成に比較して、繊維束案内装置30の設置に必要なスペースを確保するのが容易になる。   In the fiber bundle guiding device 30, guide members 31 arranged at intervals corresponding to two spindles of the spinning machine are connected by connecting members 35 and 36, and the piezoelectric element 34 interposed between the intermediate portions of the connecting members 35 and 36. Is longitudinally vibrated. Then, the guide members 31 fixed to the ends of the connecting members 35 and 36 opposite to the piezoelectric elements 34 are flexed and vibrated, and the fiber bundles F contact the guide surfaces 31a of the pair of guide portions 31b. It vibrates ultrasonically in a state where sound pressure is generated. Therefore, as compared with a configuration in which a connecting member is fixed only on one side of the piezoelectric element 34 and the connecting member is excited and longitudinally vibrated to excite one guide member 31, the piezoelectric element 34 has effective vibration energy. The connecting members 35 and 36 on both sides can be vibrated longitudinally using the above. Therefore, the energy efficiency of the excitation means 32 that excites the guide member 31 that guides the fiber bundle F in a non-contact state can be increased. Further, as compared with the configuration in which the guide members 31 are individually excited by the independent excitation means 32, it becomes easier to secure a space necessary for installing the fiber bundle guide device 30.

この実施形態によれば、以下に示す効果を得ることができる。
(1)繊維束案内装置30は、紡機に取り付けられた状態において、案内すべき繊維束Fの移動方向に沿って繊維束Fの幅を狭める案内面31aを備えた案内部材31と、案内面31aに繊維束Fが接触するのを阻止する音圧を発生するように案内部材31を振動させる励振手段32とを備えている。そして、隣接する2錘に対応する間隔で配置される案内部材31を案内部材31と直交する方向に延びる棒状の連結部材35,36で連結し、連結部材35,36の中間部に圧電素子34を介在させて、圧電素子34により連結部材35,36を縦振動させるように励振する。これにより、圧電素子34は振動のエネルギーを有効に利用して両側の連結部材35,36を振動させることができるようになる。したがって、繊維束Fを非接触状態で案内する案内部材31を励振する励振手段32のエネルギー効率を高めることができる。また、案内部材31を個々に独立した励振手段32で励振させる構成に比較して、繊維束案内装置30の設置に必要なスペースを確保するのが容易になる。
According to this embodiment, the following effects can be obtained.
(1) The fiber bundle guide device 30 includes a guide member 31 provided with a guide surface 31a that narrows the width of the fiber bundle F along the moving direction of the fiber bundle F to be guided, and a guide surface when attached to the spinning machine. Excitation means 32 is provided to vibrate the guide member 31 so as to generate a sound pressure that prevents the fiber bundle F from coming into contact with 31a. And the guide member 31 arrange | positioned by the space | interval corresponding to two adjacent spindles is connected by the rod-shaped connection members 35 and 36 extended in the direction orthogonal to the guide member 31, and the piezoelectric element 34 is intermediate | middle of the connection members 35 and 36. FIG. The coupling members 35 and 36 are excited by the piezoelectric element 34 so as to vibrate longitudinally. Accordingly, the piezoelectric element 34 can vibrate the connecting members 35 and 36 on both sides by effectively using the vibration energy. Therefore, the energy efficiency of the excitation means 32 that excites the guide member 31 that guides the fiber bundle F in a non-contact state can be increased. Further, as compared with the configuration in which the guide members 31 are individually excited by the independent excitation means 32, it becomes easier to secure a space necessary for installing the fiber bundle guide device 30.

(2)圧電素子34は、連結部材35,36の縦振動の節と対応する位置に設けられた取付け用ブラケット33を挟んで両側に一対ずつ設けられている。したがって、繊維束案内装置30が紡機に取り付けられた状態において、取付け用ブラケット33に余計な振動が伝わることがないため、他部位への不要な振動の伝達及び、それに伴う余分なエネルギーの消費がない。   (2) A pair of piezoelectric elements 34 is provided on both sides of a mounting bracket 33 provided at a position corresponding to the longitudinal vibration node of the connecting members 35 and 36. Therefore, in the state where the fiber bundle guide device 30 is attached to the spinning machine, unnecessary vibrations are not transmitted to the mounting bracket 33, so that unnecessary vibrations are transmitted to other parts, and excess energy is consumed accordingly. Absent.

(3)取付け用ブラケット33を挟んで両側に一対ずつ設けられた圧電素子34は、一対のリング状のピエゾ素子34a,34bを備えている。両ピエゾ素子34a,34b間にリング状の電極板38が配置されるとともに、両ピエゾ素子34a,34bの電極板38と対向する側と反対側の端部が、取付け用ブラケット33及び連結部材35,36と電気的に同電位で接続されている。そして、電極板38は配線40aを介して発振器39と接続され、発振器39の接地端子が配線40bを介して取付け用ブラケット33に接続されている。したがって、取付け用ブラケット33及び連結部材35,36が接地された状態、即ちゼロ電位の状態で紡機に容易に取り付けすることができる。   (3) A pair of piezoelectric elements 34 provided on both sides of the mounting bracket 33 includes a pair of ring-shaped piezoelectric elements 34a and 34b. A ring-shaped electrode plate 38 is disposed between the piezo elements 34a and 34b, and ends of the piezo elements 34a and 34b opposite to the electrode plate 38 are opposite to the mounting bracket 33 and the connecting member 35. , 36 are electrically connected at the same potential. The electrode plate 38 is connected to the oscillator 39 via the wiring 40a, and the ground terminal of the oscillator 39 is connected to the mounting bracket 33 via the wiring 40b. Therefore, the attachment bracket 33 and the connecting members 35 and 36 can be easily attached to the spinning machine in a grounded state, that is, in a state of zero potential.

(4)発振器39は、連結部材35,36の案内部材31が固着された側の端部が縦振動の腹となるように振動子37を縦振動させる。したがって、各案内部材31が効率良く撓み振動される。   (4) The oscillator 39 causes the vibrator 37 to vibrate longitudinally so that the end portions of the connecting members 35 and 36 on the side where the guide member 31 is fixed are antinodes of longitudinal vibration. Therefore, each guide member 31 is efficiently bent and vibrated.

(第2の実施形態)
次に第2の実施形態を、図3を参照しながら説明する。なお、第2の実施形態は、案内部材の構成が第1の実施形態と異なり、その他の構成は第1の実施形態と同様であるため、同様の部分については同一符号を付してその詳細な説明を省略する。
(Second Embodiment)
Next, a second embodiment will be described with reference to FIG. In the second embodiment, the configuration of the guide member is different from that of the first embodiment, and the other configurations are the same as those of the first embodiment. The detailed explanation is omitted.

図3(a)に示すように、案内部材41は、2枚の板42がスペーサ43を介して連結されて形成されている。具体的には、各板42は、基部42aにおいてスペーサ43を介して接合されるとともに、連結部材35,36に当接する板42と反対側の板42側から板42及びスペーサ43を貫通するボルト44が連結部材35,36の図示しないねじ穴に螺合することで連結部材35,36に締め付け固定されている。なお、図3(a)では連結部材36側の案内部材41と、発振器39と、配線40a,40bの図示を省略している。   As shown in FIG. 3A, the guide member 41 is formed by connecting two plates 42 via a spacer 43. Specifically, each plate 42 is joined via a spacer 43 at the base portion 42a, and a bolt that penetrates the plate 42 and the spacer 43 from the plate 42 side opposite to the plate 42 that contacts the connecting members 35 and 36. 44 is fastened and fixed to the connecting members 35 and 36 by being screwed into screw holes (not shown) of the connecting members 35 and 36. In FIG. 3A, the guide member 41 on the connecting member 36 side, the oscillator 39, and the wirings 40a and 40b are not shown.

図3(b)に示すように、板42は、基部42aと、基部42aより幅が狭い中間部42bと、中間部42bとほぼ直交するように延びるガイド部42cとを備えている。そして、両板42の間隔、即ち両ガイド部42cの間隔は、スペーサ43の厚さによって設定される。一対のガイド部42cは、その対向面が一対の案内面を構成し、案内面は上流側から下流側へと移動する繊維束Fの幅を狭めるように案内する。即ち、この実施形態では、案内部材41は、ガイド部42cに連続するとともに、励振手段32に連結される支持部となる中間部42b及び基部42aも2枚の板で構成されている。   As shown in FIG. 3B, the plate 42 includes a base portion 42a, an intermediate portion 42b having a narrower width than the base portion 42a, and a guide portion 42c extending so as to be substantially orthogonal to the intermediate portion 42b. The distance between both plates 42, that is, the distance between both guide portions 42 c is set by the thickness of the spacer 43. The pair of guide portions 42c form a pair of guide surfaces at the opposing surfaces, and the guide surfaces guide the fiber bundle F moving from the upstream side to the downstream side so as to narrow the width. That is, in this embodiment, the guide member 41 is continuous with the guide portion 42c, and the intermediate portion 42b and the base portion 42a, which are support portions connected to the excitation means 32, are also constituted by two plates.

ガイド部42cは、案内面を構成するその対向面の間隔が繊維束Fの進行方向下流側において一定のストレート部と、繊維束Fの進行方向上流側が広くなるように形成されたテーパ部とを備えている。なお、図3(a)では便宜上、ガイド部42cにおけるテーパ部の図示を省略している。   The guide portion 42c includes a straight portion in which the distance between the opposing surfaces constituting the guide surface is constant on the downstream side in the traveling direction of the fiber bundle F, and a tapered portion formed so that the upstream side in the traveling direction of the fiber bundle F is widened. I have. In FIG. 3A, the taper portion of the guide portion 42c is not shown for convenience.

この実施形態においても、第1の実施形態と同様に発振器39の駆動により、振動子37が案内部材41の所定の共振周波数(例えば、30kHz前後)で励振され、連結部材35,36は、連結部材35,36の案内部材31が固着された側の端部が縦振動の腹となるように縦振動し、連結部材35,36を介して案内部材41が撓み振動する。そして、ガイド部42cに繊維束Fが接触するのを阻止する音圧を発生するように案内部材41が振動され、繊維束Fは非接触状態でガイド部42cと対応する位置を通過して集束され、ボトムニップローラ26a及びトップニップローラ26bのニップ点を過ぎた後、撚り掛けを受けながら下流側へ移動し、図示しないボビンに巻き取られる。   Also in this embodiment, the vibrator 37 is excited at a predetermined resonance frequency (for example, around 30 kHz) of the guide member 41 by driving the oscillator 39 as in the first embodiment, and the connecting members 35 and 36 are connected to each other. The ends of the members 35 and 36 on the side where the guide member 31 is fixed vibrate longitudinally so that they become antinodes of longitudinal vibration, and the guide member 41 bends and vibrates via the connecting members 35 and 36. Then, the guide member 41 is vibrated so as to generate a sound pressure that prevents the fiber bundle F from coming into contact with the guide portion 42c, and the fiber bundle F converges through a position corresponding to the guide portion 42c in a non-contact state. Then, after passing the nip point of the bottom nip roller 26a and the top nip roller 26b, it moves downstream while being twisted and wound around a bobbin (not shown).

したがって、この実施形態によれば、第1の実施形態における(1)〜(4)と同様な効果の他に次の効果を得ることができる。
(5)案内部材41は、2枚の板42がスペーサ43を介して連結されるとともに、スペーサ43と対応する部分において励振される。したがって、案内部材として繊維束を案内するガイド部のみ一対の板部が対向する構造に鋳造や切削加工で形成する場合に比較して、案内部材41の製造が容易になっている。また、案内部材を、振動子に連結されて撓み振動する大部分を1枚の板状あるいはロッド状に構成した場合に比較して、ガイド部42cを所望の振動状態で効率良く大きな振幅で励振させるのが容易になる。
Therefore, according to this embodiment, the following effects can be obtained in addition to the same effects as (1) to (4) in the first embodiment.
(5) The guide member 41 is excited at a portion corresponding to the spacer 43 while the two plates 42 are connected via the spacer 43. Therefore, the guide member 41 can be easily manufactured as compared with the case where the guide member that guides the fiber bundle is formed by casting or cutting in a structure in which the pair of plate portions are opposed to each other. In addition, the guide member 42c is efficiently excited with a large amplitude in a desired vibration state as compared with the case where the guide member is configured to be largely plate-shaped or rod-shaped by being coupled to the vibrator to bend and vibrate. It is easy to make it.

(6)案内部材41は、2枚の板42がスペーサ43にろう付け等で固着されて連結されるのではなく、ボルト44が板42及びスペーサ43を貫通して連結部材35,36に螺合することにより、連結部材35,36に締め付け固定されて連結されている。したがって、紡出条件の変更、例えば細番手の糸の紡出から太番手の糸の紡出への変更や紡出糸の風合い(毛羽の状態)の変更等により、ガイド部42cの間隔を変更する必要がある場合、スペーサ43の交換のみで対応することが可能になる。   (6) In the guide member 41, the two plates 42 are not fixedly connected to the spacer 43 by brazing or the like, but the bolt 44 passes through the plate 42 and the spacer 43 and is screwed to the connecting members 35 and 36. As a result, they are fastened and connected to the connecting members 35 and 36. Therefore, the interval between the guide portions 42c is changed by changing the spinning conditions, for example, changing from spinning fine yarns to spinning thick yarns or changing the texture of the spun yarn (fluff state). When it is necessary to do so, it is possible to cope with it only by exchanging the spacer 43.

実施形態は前記に限定されるものではなく、例えば、次のように構成してもよい。
○ 板状の取付け用ブラケット33を挟んで両側にそれぞれ一対の圧電素子34を設ける構成に代えて、圧電素子34が連結部材35,36に挟まれて一対設けられた構成としてもよい。例えば、図4(a),(b)に示すように、一対の圧電素子34を挟むようにして圧電素子34と連結部材35,36を連結する。詳述すると、両ピエゾ素子34a,34b間に電極板38を挟持し、これを貫通するボルトと連結部材35,36とで締め上げられた状態で、取付け用ブラケット45に支持される。
The embodiment is not limited to the above, and may be configured as follows, for example.
O Instead of the configuration in which the pair of piezoelectric elements 34 is provided on both sides of the plate-shaped mounting bracket 33, the piezoelectric elements 34 may be provided in a pair by being sandwiched between the connecting members 35 and 36. For example, as shown in FIGS. 4A and 4B, the piezoelectric element 34 and the connecting members 35 and 36 are connected so as to sandwich the pair of piezoelectric elements 34. More specifically, the electrode plate 38 is sandwiched between the piezoelectric elements 34a and 34b, and is supported by the mounting bracket 45 in a state of being tightened by bolts and connecting members 35 and 36 passing through the electrode plate 38.

取付け用ブラケット45は、連結部材35,36の周面と同じ曲率半径の円弧面46aを一対備え、両円弧面46aの間に円弧面46aより大きな曲率半径の円弧面46bが形成された本体46と、円弧面46aと同じ曲率半径の円弧面を有するとともに、ボルト48により本体46に固定される2個の固定部材47とで構成されている。そして、図4(a)に示すように、ピエゾ素子34a,34b及び電極板38が円弧面46bと対応し、連結部材35,36が円弧面46aに嵌合する状態で、固定部材47が連結部材35,36と嵌合するようにボルト48により本体46に締め付け固定される。したがって、圧電素子34及び電極板38は、本体46及び固定部材47と非接触の状態に保持される。そして、電極板38が配線40aを介して発振器39に接続され、発振器39の接地端子が配線40bを介して取付け用ブラケット33に接続される。即ち、圧電素子34は取付け用ブラケット45を介して接地される。   The mounting bracket 45 includes a pair of arc surfaces 46a having the same radius of curvature as the peripheral surfaces of the connecting members 35 and 36, and an arc surface 46b having a radius of curvature larger than the arc surface 46a is formed between the arc surfaces 46a. And an arc surface having the same radius of curvature as the arc surface 46a, and two fixing members 47 fixed to the main body 46 by bolts 48. As shown in FIG. 4A, the piezo elements 34a and 34b and the electrode plate 38 correspond to the arc surface 46b, and the fixing member 47 is connected in a state where the connecting members 35 and 36 are fitted to the arc surface 46a. The main body 46 is fastened and fixed by a bolt 48 so as to be fitted to the members 35 and 36. Therefore, the piezoelectric element 34 and the electrode plate 38 are held in a non-contact state with the main body 46 and the fixing member 47. The electrode plate 38 is connected to the oscillator 39 via the wiring 40a, and the ground terminal of the oscillator 39 is connected to the mounting bracket 33 via the wiring 40b. That is, the piezoelectric element 34 is grounded via the mounting bracket 45.

この実施形態においても、振動子37は、圧電素子34の中央部分が縦振動の節になり、連結部材35,36の案内部材41側の端部が縦振動の腹になる状態で励振されて使用される。そのため、取付け用ブラケット45に余計な振動が伝わることがないため、他部位への不要な振動の伝達及び、それに伴う余分なエネルギーの消費がない。また、圧電素子34の数が1対だけでもよくなり、圧電素子の数を容易に少なくすることができる。   Also in this embodiment, the vibrator 37 is excited in a state where the central portion of the piezoelectric element 34 becomes a node of longitudinal vibration and the end portions of the connecting members 35 and 36 on the guide member 41 side become antinodes of longitudinal vibration. used. For this reason, unnecessary vibration is not transmitted to the mounting bracket 45, so that unnecessary vibration is not transmitted to other parts, and excess energy associated therewith is not consumed. Also, only one pair of piezoelectric elements 34 is required, and the number of piezoelectric elements can be easily reduced.

○ 第1の実施形態において振動子37を構成する連結部材35,36を連結する構成は、一方の連結部材35に形成された雌ねじ部35aに他方の連結部材36形成された雄ねじ部36aを螺合する構成に限らない。例えば、図5に示すように、連結部材36にも雌ねじ部36cを形成し、両側に雄ねじ部49aを有するロッド49を介して連結部材35,36を連結する構成としてもよい。この場合、他方の連結部材36に雄ねじ部36aを有するロッド部36bを設ける構成に比較して、振動子37を精度良く左右対称にしてバランスをとることができ、両案内部材31を均等に振動させることができる。その結果、振動系のインピーダンスを低下させることができ、振動子37をより効率良く励振することができる。   In the first embodiment, the connecting members 35 and 36 constituting the vibrator 37 are connected to each other by screwing the male screw portion 36a formed on the other connecting member 36 into the female screw portion 35a formed on the one connecting member 35. It is not restricted to the structure to match. For example, as shown in FIG. 5, it is good also as a structure which forms the internal thread part 36c also in the connection member 36, and connects the connection members 35 and 36 via the rod 49 which has the external thread part 49a on both sides. In this case, as compared with the configuration in which the rod portion 36b having the male screw portion 36a is provided on the other connecting member 36, the vibrator 37 can be balanced with high accuracy and left and right, and both guide members 31 can be vibrated equally. Can be made. As a result, the impedance of the vibration system can be reduced, and the vibrator 37 can be excited more efficiently.

○ 案内部材41を2枚の板42がスペーサ43を介して連結される構成は、スペーサ43が板42と別体である構成に限らない。例えば、図6(a),(b)に示すように、両板42の基部42aにそれぞれスペーサ43を一体に突出形成してもよい。スペーサ43の厚さは、両スペーサ43の厚さの合計が、両ガイド部42cの間隔に対応する値になればよく、同じ厚さである必要はない。スペーサ43を板42と一体に形成した場合、部品点数を削減できるだけでなく、スペーサ43が別体の場合に比較して、振動系のインピーダンスを低下させることができ、より低電圧で駆動することが可能になる。   The configuration in which the two plates 42 are connected to the guide member 41 via the spacer 43 is not limited to the configuration in which the spacer 43 is separate from the plate 42. For example, as shown in FIGS. 6A and 6B, the spacers 43 may be integrally formed on the base portions 42 a of both plates 42. The thickness of the spacer 43 is not limited to the same thickness as long as the sum of the thicknesses of both the spacers 43 is a value corresponding to the distance between the two guide portions 42c. When the spacer 43 is formed integrally with the plate 42, not only the number of parts can be reduced, but also the impedance of the vibration system can be reduced compared to the case where the spacer 43 is a separate body, and the drive is performed at a lower voltage. Is possible.

○ スペーサ43を板42と一体に形成する場合、各板42に形成されたスペーサ43の先端面が互いに対向する状態で当接する構成に限らず、例えば、図6(c)に示すように、両板42の基部42aの高さの異なる位置に、両ガイド部42cの間隔に対応する厚さのスペーサ43を1個ずつ設けてもよい。また、図6(d)に示すように、一方の板42に2個のスペーサ43を突設し、他方の板42に前記2個のスペーサ43の間隔と同じ幅の1個のスペーサ43を突設してもよい。これらの場合、両板42を組み合わせて接合する際に、スペーサ43が上下方向の位置決め部としても機能する。   ○ When the spacer 43 is formed integrally with the plate 42, the configuration is not limited to the configuration in which the front end surfaces of the spacers 43 formed on each plate 42 are in contact with each other. For example, as shown in FIG. One spacer 43 having a thickness corresponding to the distance between the two guide portions 42c may be provided at a position where the heights of the base portions 42a of the two plates 42 are different. Further, as shown in FIG. 6D, two spacers 43 project from one plate 42, and one spacer 43 having the same width as the interval between the two spacers 43 is provided on the other plate 42. You may project. In these cases, when the two plates 42 are joined in combination, the spacer 43 also functions as a vertical positioning portion.

○ 1つの振動子が2錘に対応する間隔で配置された2つの案内部材31,41を同時に振動させる構成に限らず、1つの振動子が2錘に対応する間隔で配置された3つ以上の案内部材31を振動させる構成にしてもよい。例えば、図7に示すように、1つの振動子37で4錘分の案内部材31を振動させる構成としてもよい。振動子37は左右対称に形成され、第1の実施形態における連結部材35,36に加えて、2錘の間隔に対応する長さの連結部材50が案内部材31の支持部31cを挟んで連結部材35,36に連結されている。なお、図7では連結部材36側の案内部材31と、発振器39と、配線40a,40bと連結部材50の図示を省略している。案内部材31の支持部31cと連結部材35,36,50とは、例えば、ろう付けで固着されている。振動子37が案内部材31の所定の共振周波数(例えば、30kHz前後)で励振された際、連結部材35,36,50の案内部材31が固着された側の端部が縦振動の腹となるように、連結部材35,36,50の太さや形状が設定される。したがって、連結部材35,36を介して案内部材31が効率良く撓み振動する。この場合、部品点数をより削減することができる。なお、案内部材31に代えて、2枚の板42がスペーサ43を介して接合された構成の案内部材41を用いてもよい。   ○ Not limited to a configuration in which two vibrators 31 and 41 arranged at intervals corresponding to two spindles are vibrated simultaneously, three or more one vibrator arranged at intervals corresponding to two spindles The guide member 31 may be configured to vibrate. For example, as shown in FIG. 7, the guide member 31 for four spindles may be vibrated by one vibrator 37. The vibrator 37 is formed symmetrically, and in addition to the connecting members 35 and 36 in the first embodiment, a connecting member 50 having a length corresponding to the interval between the two spindles is connected across the support portion 31c of the guide member 31. The members 35 and 36 are connected. In FIG. 7, the guide member 31, the oscillator 39, the wirings 40a and 40b, and the connecting member 50 on the connecting member 36 side are not shown. The support part 31c of the guide member 31 and the connecting members 35, 36, and 50 are fixed by brazing, for example. When the vibrator 37 is excited at a predetermined resonance frequency (for example, around 30 kHz) of the guide member 31, the ends of the connecting members 35, 36, 50 on the side where the guide member 31 is fixed become antinodes of longitudinal vibration. In this way, the thickness and shape of the connecting members 35, 36, 50 are set. Therefore, the guide member 31 efficiently bends and vibrates via the connecting members 35 and 36. In this case, the number of parts can be further reduced. Instead of the guide member 31, a guide member 41 having a configuration in which two plates 42 are joined via a spacer 43 may be used.

○ 1つの振動子37に4錘以上と対応するように案内部材31,41を設ける場合、取付け用ブラケット33を圧電素子34に挟持された状態で振動子37の中央に設ける構成に代えて、圧電素子34と別の位置で振動子37が縦振動する際の節となる位置に設けてもよい。この場合、取付け用ブラケット33を2箇所に設けた方が安定した状態で支持することができる。   In the case where the guide members 31 and 41 are provided so as to correspond to four or more spindles in one vibrator 37, instead of the configuration in which the mounting bracket 33 is sandwiched between the piezoelectric elements 34 and provided in the center of the vibrator 37, You may provide in the position used as the node when the vibrator | oscillator 37 vibrates longitudinally in a position different from the piezoelectric element 34. In this case, it is possible to support the mounting brackets 33 in a stable state by providing the mounting brackets 33 at two locations.

○ ガイド部42cは、側面の形状が、入口側及び出口側の幅(高)が中央部より小さい形状に限らず、入口から出口まで一定の幅であってもよい。
○ 振動子37を励振させる際、必ずしも連結部材35,36,50の案内部材31,41と接合される位置が縦振動の腹になる状態で励振させる構成に限らず、連結部材35,36,50の案内部材31,41と接合される位置が縦振動の腹からずれた位置であってもよい。しかし、腹と一致する位置の方が小さな駆動エネルギーで案内部材31,41を所望の振動状態で振動させることができる。連結部材35,36,50の案内部材31,41と接合される位置を縦振動の腹からずらす場合、隣接する腹と節の距離の20%以内が好ましい。
The guide part 42c is not limited to a shape in which the width (height) of the inlet side and the outlet side is smaller than that of the central part, and the guide part 42c may have a constant width from the inlet to the outlet.
○ When the vibrator 37 is excited, the connecting members 35, 36, 50 are not limited to the configuration in which the positions where the connecting members 35, 36, 50 are joined to the guide members 31, 41 become longitudinal antinodes. The position where the 50 guide members 31 and 41 are joined may be a position shifted from the antinodes of longitudinal vibration. However, the guide members 31 and 41 can be vibrated in a desired vibration state with a smaller driving energy at a position that coincides with the antinode. When the positions where the connecting members 35, 36, 50 are joined to the guide members 31, 41 are shifted from the antinodes of longitudinal vibration, it is preferably within 20% of the distance between adjacent antinodes.

○ 案内部材31,41を連結部材35,36,50にろう付けで固着する代わりに、半田付けや接着剤で固着したり、ボルトで締め付け固定したりしてもよい。
○ 励振手段32は圧電素子34を用いて構成された振動子37に代えて、磁歪素子や超磁歪素子を用いて振動子37を構成してもよい。
O Instead of fixing the guide members 31, 41 to the connecting members 35, 36, 50 by brazing, they may be fixed by soldering, an adhesive, or fastened with bolts.
The exciter 32 may be configured as a vibrator 37 using a magnetostrictive element or a giant magnetostrictive element instead of the vibrator 37 configured using the piezoelectric element 34.

○ 繊維束案内装置30は、所謂コンパクト糸と呼ばれる高品質の糸を紡出するため、最終送出ローラ対26とその直前のローラ(フロントボトムローラ12及びフロントトップローラ21)との間に配置されて使用されるものに限らない。例えば、精紡機のドラフト装置において、繊維束案内装置30をバックローラとエプロンが巻き掛けられたミドルローラとの間に配置して使用するようにしてもよい。精紡機においては、現在のドラフトより高いドラフトで紡出を行いたいという要望もある。しかし、現在のドラフト装置ではそのドラフトを達成するためにバックローラとミドルローラとの間のドラフトを高めると、バックローラとミドルローラとの間において繊維束の幅が拡がり、拡がったままの状態で繊維束がミドルローラに進入するため、良好なドラフトを行うことができないという問題がある。しかし、前記のような構成の繊維束案内装置30をバックローラとミドルローラとの間に配置することにより、エプロンが巻き掛けられたミドルローラに繊維束が入る前に、繊維束の幅が所望の幅に狭められる。したがって、従来に比較してバックゾーンでのドラフトを高めて、全体としてのドラフトを高めるようにドラフト装置を駆動しても、エプロンゾーンでのドラフトが良好に行われる。   The fiber bundle guide device 30 is arranged between the final delivery roller pair 26 and the immediately preceding rollers (the front bottom roller 12 and the front top roller 21) in order to spin a high-quality yarn called a so-called compact yarn. It is not limited to what is used. For example, in a drafting device of a spinning machine, the fiber bundle guide device 30 may be disposed between a back roller and a middle roller around which an apron is wound. In the spinning machine, there is a demand for spinning at a draft higher than the current draft. However, in the current draft device, when the draft between the back roller and the middle roller is increased in order to achieve the draft, the width of the fiber bundle is widened between the back roller and the middle roller, Since the fiber bundle enters the middle roller, there is a problem that good drafting cannot be performed. However, by arranging the fiber bundle guiding device 30 having the above-described configuration between the back roller and the middle roller, the width of the fiber bundle is desired before the fiber bundle enters the middle roller around which the apron is wound. The width is narrowed. Therefore, even if the draft device is driven so that the draft in the back zone is increased and the draft as a whole is increased as compared with the prior art, the draft in the apron zone is performed well.

以下の技術的思想(発明)は前記実施形態から把握できる。
(1)請求項2に記載の発明において、前記連結部材は第1端部が前記圧電素子に接合され、第2端部が前記案内部材に接合されている。
The following technical idea (invention) can be understood from the embodiment.
(1) In the invention according to claim 2, the connecting member has a first end joined to the piezoelectric element and a second end joined to the guide member.

(2)請求項2又は前記技術的思想(1)に記載の発明において、前記対を成す圧電素子は、前記連結部材と接合する側及び前記取付け用ブラケットと接合する側が電位ゼロになるように設けられている。   (2) In the invention described in claim 2 or the technical idea (1), the piezoelectric element forming the pair is configured such that the side joining the connecting member and the side joining the mounting bracket have a potential of zero. Is provided.

(3)請求項4に記載の発明において、前記スペーサは前記2枚の板と別体に形成され、ボルトを介して前記連結部材に締め付け固定されることで互いに連結状態に保持される。   (3) In the invention according to claim 4, the spacer is formed separately from the two plates, and is held in a connected state by being fastened and fixed to the connecting member via a bolt.

(4)請求項1〜請求項5及び前記技術的思想(1)〜(3)のいずれか一項に記載の繊維束案内装置が、最終送出ローラ対とその直前のローラとの間に配置されている精紡機のドラフト装置。   (4) The fiber bundle guide device according to any one of claims 1 to 5 and the technical ideas (1) to (3) is disposed between a final delivery roller pair and a roller immediately before the pair. The spinning machine draft equipment.

(5)請求項1〜請求項5及び前記技術的思想(1)〜(3)のいずれか一項に記載の繊維束案内装置が、エプロンが巻き掛けられたミドルローラとバックローラとの間に配置されている精紡機のドラフト装置。   (5) The fiber bundle guide device according to any one of claims 1 to 5 and the technical ideas (1) to (3) is provided between a middle roller and a back roller around which an apron is wound. The drafting machine of the spinning machine which is arranged in.

(a)は第1の実施形態におけるドラフト装置の側面図、(b)はトップ側から見た案内部材とボトムローラの関係を示す概略図。(A) is a side view of the draft device in a 1st embodiment, (b) is a schematic diagram showing the relation between a guide member and a bottom roller seen from the top side. (a)は繊維束案内装置の正面図、(b)は振動子の分解正面図。(A) is a front view of a fiber bundle guide device, (b) is an exploded front view of a vibrator. (a)は第2の実施形態の繊維束案内装置の部分正面図、(b)は板の側面図。(A) is a partial front view of the fiber bundle guide apparatus of 2nd Embodiment, (b) is a side view of a board. 別の実施形態を示し、(a)は取付け用ブラケット、圧電素子、連結部材等の関係を示す模式平面図、(b)は取付け用ブラケットの分解斜視図。4A and 4B are schematic plan views showing the relationship between a mounting bracket, a piezoelectric element, a connecting member, and the like, and FIG. 5B is an exploded perspective view of the mounting bracket. 別の実施形態の連結部材の連結構成を示す模式図。The schematic diagram which shows the connection structure of the connection member of another embodiment. (a)は別の実施形態の案内部材を構成する板の側面図、(b)〜(d)はそれぞれ別の実施形態の案内部材の正面図。(A) is a side view of the board which comprises the guide member of another embodiment, (b)-(d) is a front view of the guide member of another embodiment, respectively. 別の実施形態の繊維束案内装置の部分模式正面図。The partial model front view of the fiber bundle guide apparatus of another embodiment. 案内部材及び振動子が1個の繊維束案内装置の模式図。The schematic diagram of a fiber bundle guide apparatus with one guide member and vibrator.

符号の説明Explanation of symbols

F…繊維束、30…繊維束案内装置、31,41…案内部材、31a…案内面、32…励振手段、33,45…取付け用ブラケット、34…圧電素子、35,36,50…連結部材、35a,36c…雌ねじ部、36a,49a…雄ねじ部、42…板、43…スペーサ。   F ... Fiber bundle, 30 ... Fiber bundle guide device, 31, 41 ... Guide member, 31a ... Guide surface, 32 ... Excitation means, 33, 45 ... Mounting bracket, 34 ... Piezoelectric element, 35, 36, 50 ... Connection member , 35a, 36c ... female screw portion, 36a, 49a ... male screw portion, 42 ... plate, 43 ... spacer.

Claims (5)

上流側から下流側へと移動する繊維束の幅を狭めるように案内する紡機における繊維束案内装置であって、
紡機に取り付けられた状態において、案内すべき繊維束の移動方向に沿って繊維束の幅を狭める案内面を備えた案内部材と、
前記案内面に前記繊維束が接触するのを阻止する音圧を発生するように前記案内部材を振動させる励振手段とを備え、
少なくとも隣接する2錘に対応する間隔で配置される前記案内部材を前記案内部材と直交する方向に延びる棒状の連結部材で連結し、前記連結部材の中間部に圧電素子を介在させて、圧電素子により前記連結部材を縦振動させるように励振する紡機における繊維束案内装置。
A fiber bundle guide device in a spinning machine for guiding the width of a fiber bundle moving from the upstream side to the downstream side,
A guide member having a guide surface that narrows the width of the fiber bundle along the moving direction of the fiber bundle to be guided in a state of being attached to the spinning machine;
Excitation means for vibrating the guide member to generate a sound pressure that prevents the fiber bundle from contacting the guide surface;
The guide members arranged at intervals corresponding to at least two adjacent spindles are connected by a rod-like connecting member extending in a direction orthogonal to the guide member, and a piezoelectric element is interposed in an intermediate portion of the connecting member, thereby A fiber bundle guide device in a spinning machine that excites the connecting member to vibrate longitudinally.
前記圧電素子は、前記連結部材の縦振動の節と対応する位置に設けられた取付け用ブラケットを挟んで両側に一対ずつ設けられている請求項1に記載の紡機における繊維束案内装置。   2. The fiber bundle guide device for a spinning machine according to claim 1, wherein the piezoelectric elements are provided in pairs on both sides with a mounting bracket provided at a position corresponding to the longitudinal vibration node of the connecting member. 前記圧電素子は前記連結部材に挟まれて一対設けられ、前記圧電素子を挟んで設けられた連結部材は前記圧電素子と対向する部分において取付け用ブラケットで支持されている請求項1に記載の紡機における繊維束案内装置。   2. The spinning machine according to claim 1, wherein a pair of the piezoelectric elements are sandwiched between the coupling members, and the coupling members disposed between the piezoelectric elements are supported by a mounting bracket at a portion facing the piezoelectric elements. Fiber bundle guide device. 前記案内部材は、2枚の板がスペーサを介して連結されるとともに、前記スペーサと対応する部分において励振される請求項1〜請求項3のいずれか一項に記載の紡機における繊維束案内装置。   The fiber guide apparatus for a spinning machine according to any one of claims 1 to 3, wherein the guide member is connected to two plates via a spacer and excited at a portion corresponding to the spacer. . 前記圧電素子を挟んで設けられた連結部材には前記圧電素子と対向する面に雌ねじ部が形成され、両連結部材は前記圧電素子を遊貫するとともに両側に前記雌ねじ部と螺合する雄ねじ部を有する連結ロッドに螺合することにより前記圧電素子を挟持する状態で連結されている請求項1〜請求項4のいずれか一項に記載の紡機における繊維束案内装置。   The connecting member provided with the piezoelectric element interposed therebetween has a female screw portion formed on a surface facing the piezoelectric element, and both connecting members loosely penetrate the piezoelectric element and are screwed with the female screw portion on both sides. The fiber bundle guide device in the spinning machine according to any one of claims 1 to 4, wherein the piezoelectric element is connected in a state where the piezoelectric element is sandwiched by being screwed to a connecting rod having a pin.
JP2007147177A 2007-06-01 2007-06-01 Fiber strand-guiding device in spinning machine Pending JP2008297677A (en)

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JP2007147177A JP2008297677A (en) 2007-06-01 2007-06-01 Fiber strand-guiding device in spinning machine
CN2008101098336A CN101314876B (en) 2007-06-01 2008-05-29 Fiber cluster guide apparatus for spinning machine
DE200860000689 DE602008000689D1 (en) 2007-06-01 2008-05-30 Device for guiding fiber bundles for a spinning machine
EP20080157270 EP2009152B1 (en) 2007-06-01 2008-05-30 Fiber bundle guiding device for a spinning machine

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