EP0550752B1 - Peigne pour metier rapide - Google Patents

Peigne pour metier rapide Download PDF

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Publication number
EP0550752B1
EP0550752B1 EP91916946A EP91916946A EP0550752B1 EP 0550752 B1 EP0550752 B1 EP 0550752B1 EP 91916946 A EP91916946 A EP 91916946A EP 91916946 A EP91916946 A EP 91916946A EP 0550752 B1 EP0550752 B1 EP 0550752B1
Authority
EP
European Patent Office
Prior art keywords
reed
blades
reed blades
groups
films
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91916946A
Other languages
German (de)
English (en)
Other versions
EP0550752A4 (fr
EP0550752A1 (fr
Inventor
Yukio Miya
Shigeru Kizaki
Osamu Sugiyama
Akiteru Hatayama
Yoshitsugu Shibuya
Mitsugu Enomoto
Koichi Naoi
Yuji Fukazawa
Takanori Nanya
Shotaro Shimizu
Hiroshi Tagawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Publication of EP0550752A1 publication Critical patent/EP0550752A1/fr
Publication of EP0550752A4 publication Critical patent/EP0550752A4/xx
Application granted granted Critical
Publication of EP0550752B1 publication Critical patent/EP0550752B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/60—Construction or operation of slay
    • D03D49/62—Reeds mounted on slay
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/27—Drive or guide mechanisms for weft inserting
    • D03D47/277—Guide mechanisms
    • D03D47/278—Guide mechanisms for pneumatic looms

Definitions

  • the present invention relates to a reed for a high-speed loom and, more particularly, to a reed for a high-speed loom which has reed blades coated with a hard film in order to increase the wear resistance of the reed blades constituting the reed.
  • a reed as a component of a loom is used to align and press the warps and wefts, respectively, of the loom, thereby straightening the weave pattern.
  • the reed is constituted by arranging a large number of reed blades comprising thin metal plates parallel to each other at small gaps, and fixing the reed blades by a frame comprising right and left side master blades and upper and lower metal side portions.
  • reed blades made of a stainless steel are generally used.
  • wear of the reed blades is severe, and the wear resistance of the reed blades -poses an important problem.
  • a hard film which has an excellent wear resistance e.g., a hard chrome plating film, a ceramic film (Japanese Patent Laid-Open No. 60-52658) made of tungsten carbide, titanium carbide, titanium nitride or the like, and a chrome oxide film (Japanese Patent Laid-Open No. 61-245346, and U.S.P. No. 4,822,662).
  • a hard chrome plating film is formed by electroplating.
  • the hard chrome plating film has poor wear resistance as well as poor adhesive properties and corrosion resistance.
  • a ceramic film is formed in accordance with PVD (Physical Vapor Deposition), CVD (Chemical Vapor Deposition), flame spraying, or the like.
  • PVD Physical Vapor Deposition
  • CVD Chemical Vapor Deposition
  • flame spraying or the like.
  • the ceramic film has poor adhesive properties and it causes softening of the base material upon a high temperature treatment.
  • a chrome oxide film is formed thermochemically and has an effect when it is formed on reed blades and applied to a polyester fibre.
  • the chrome oxide film does not povide a sufficient effect when it is formed on the reed blades and applied to a natural or new material fiber.
  • Wear of the reed blades is a phenomenon in which the types of fibers, frictional force, vibration characteristics of the reed, and the like are closely related to each other in a complex manner. It is known that a hard film having a high surface hardness does not always provide a good effect. Accordingly, although a hard film matched with the types of fibers, the operating speed of the loom, and other conditions is employed, it provides an improvement in durability of only about 2 to 5 times that of a stainless steel base material not coated with a hard film.
  • JP-U-61-59688 teaches the coating of reed blades with a wear resistant material and JP-A-2100969 teaches diamond-like carbon (DLC) film as a wear resistant coating for elements exposed to friction from running yarns.
  • DLC diamond-like carbon
  • an object of the present invention to provide a reed blade suitable to many types of fibers, ranging from a natural fiber to a synthetic and new material fibers, and having a remarkably improved durability at a relatively low cost.
  • a diamond-like carbon film (to be referred to as a DLC film hereinafter) is formed on a portion ofa reed blade requiring a highest wear resistance.
  • a stainless steel is used as the base material of the reed blade
  • an intermediate layer comprising e.g. a titanium carbide layer is interposed between the base material and the DLC film to improve the adhesive properties.
  • reed blades each coated with a DLC film are arranged in the vicinities of the two sides of the reed where wear progresses most quickly, and reed blades each coated with a hard film requiring a relatively low cost, or non-coated reed blades are arranged in the central portion of the reed, thereby uniforming the wear amount of the reed blades throughout the entire reed. As a result, an improvement in total durability is realized at a relatively low cost.
  • the DLC film employed in the present invention is a hydrogen-coupled amorphous carbon film and is introduced in, e.g., L. P. Anderson, A Review of Recent Work On Hard i-C Films , Thin solid Films , 86 (1981), pp. 193 - 200.
  • a DLC film exhibits a large hardness next to diamond, a large thermal conductivity of about 5 times that of copper, and a very small coefficient of friction. These characteristics are utilized in the slidable surfaces of mechanical components and the like. Since the large tensile strength and small internal friction of the DLC film realize vibration characteristics suitable to acoustic appliances, a DLC film is also formed on a diaphragm of a loudspeaker and the like. Not much is known regarding the behavior of the DLC film in the wear mechanism of a reed blade driven at a high speed. However, not only the large surface hardness and small coefficient of friction but also the thermal conductivity and vibration characteristics are assumed to contribute to improvement in durability of the reed blade.
  • Fig. 1 is a front view of a reed as the target of the present invention and the prior art
  • Fig. 2 is a plan view of a flat reed blade as the target of the present invention and the prior art
  • Fig. 3 is a plan view of a modified reed blade as the target of the present invention and the prior art
  • Fig. 4 is a sectional view of the main part of a reed blade according to an embodiment of the present invention
  • Fig. 5 is a partially cutaway front view of a reed according to another embodiment of the present invention
  • Fig. 6 is a graph showing the relationship between the position and wear amount of the reed blades in the present invention and the prior art.
  • Fig. 6 is a graph schematically showing the relationship between the position and wear amount of the reed blades under average operating conditions of a high-speed loom for three types of reed blades.
  • the axis of abscissa represents the position of a reed blade by way of the number of reed blades counted from a side portion of the reed.
  • a curve ADHM indicates the wear amount of reed blade made of a non-coated stainless steel base material
  • a curve BEFKN indicates the wear amount of reed blades coated with hard chrome plating films
  • a curve CGL indicates the wear amount of reed blades coated with DLC films according to the present invention.
  • the service life of the reed is determined by the wear of the outermost (1st) reed blades which are worn most, as described above.
  • the wear amount of the outermost reed blades is decreased to half from A to B. Since this wear amount B corresponds to a wear amount D of the non-coated 30th reed blades, the wear amount of the entire reed can be decreased to a level of B or less by coating the 1st to 30th reed blades with hard chrome plating films.
  • the service life of the entire reed is not prolonged.
  • the wear amount of the outermost reed blades is greatly decreased from A to C.
  • This wear amount C corresponds to a wear amount H of the non-coated 110th reed blades. Therefore, in order to obtain a sufficiently high effect by forming DLC films, the reed blades must be coated at least up to the 110th ones with the DLC films.
  • the DLC film improves the durability of the reed remarkably, it has a sufficiently high practicality depending on the weaving conditions.
  • To combine a DLC film with other hard films is also a very effective means.
  • the wear amount C of the outermost reed blades coated with the DLC films corresponds to a wear amount F of the 45th reed blades coated with hard chrome plating films. Therefore, when DLC films are formed on the 1st to 45th reed blades and hard chrome plating films are formed on the 46th to 110th reed blades, the same practical effect as that obtained when LCD films are formed on all the reed blades can be obtained. In this manner, when a plurality of hard films having different coating costs and wear resistances are combined to uniform wear of the reed blades throughout the entire reed, the durability of the reed can be remarkably improved at a relatively low cost.
  • Fig. 1 is a front view of a reed as the target of the present invention and the prior art.
  • a reed 10 holds a large number of reed blades 20 at predetermined gaps with a frame 16 constituted by upper and lower metal side portions 12 and right and left side master blades 14.
  • the reed blades 20 comprise thin metal plates and have a shape as shown in Fig. 2 or 3.
  • a reed blade 20A shown in Fig. 2 is a simple belt-shaped one called a flat reed blade.
  • a reed blade 20B shown in Fig. 3 is called a profiled reed blade and used in a water jet loom or air jet loom.
  • a hatched portion 22A or 22B shown in Fig. 2 or 3 i.e., the central portion of the reed blade is the maximum wear portion which is worn most.
  • part of the reed blade at least including this portion is coated with a DLC film.
  • a stainless steel is generally used as the base material of the reed blade.
  • a DLC film is directly formed on the surface of the stainless steel, sufficiently high adhesive properties cannot be obtained, and the object of the present invention cannot be attained.
  • an intermediate film is interposed between the stainless steel base material and the DLC film to improve the adhesive properties.
  • a two-layered film having a chromium (Cr) or titanium (Ti) lower layer exhibiting good adhesive properties with the stainless steel, and a silicon (Si) upper layer exhibiting good adhesive properties with the DLC film, and a carbide film of, e.g., titanium (Ti), zirconium (Zr), and hafnium (Hf) are effective.
  • a titanium carbide film Japanese Patent Laid-Open No. 64-79372
  • Fig. 4 is a sectional view of the main part of the maximum wear portion 22B of the reed blade 20B shown in Fig. 3.
  • a titanium carbide film is formed as an intermediate layer 26 on the surface of a base material 24 made of a stainless steel, and a DLC film 28 is formed on the surface of the intermediate layer 26.
  • the titanium carbide film can be formed in accordance with plasma CVD in a vacuum chamber in which a hydrocarbon gas is introduced.
  • Fig. 5 is a front view of a reed showing the arranged state of reed blades according to another embodiment of the present invention.
  • Reed blades 20 are divided into first, second, and third groups 201, 202, and 203 sequentially from the groups close to master blades 14 on two sides toward the center.
  • Each first group 201 is a group of reed blades each obtained by forming a DLC film on the surface of a stainless steel base material through an intermediate layer
  • each second group 202 is a group of reed blades each obtained by forming a hard film different from the DLC film on the surface of a stainless steel base material
  • each third group 203 is a group of reed blades each made of a non-coated stainless steel base material.
  • Table 1 shows the result of a durability test wherein standard weaving was performed by a high-speed loom by using a cotton yarn which is the most general as the fiber.
  • Comparative Example 1 when weaving was executed under predetermined conditions by using a conventional reed made of only the stainless steel base material, defects such as end breakage and raising of the woven fabric occurred after an operation of about 12 hours. The ratio of durability was calculated from the operating time until a defect occurred by using the result of this reed as a reference value of 1.0 for the durability.
  • Comparative Example 2 in the conventional reed in which hard chrome plating films are formed on the reed blades on the two sides of the reed that correspond to 10% of all the reed blades, the durability is increased to twice or more.
  • Comparative Example 3 in a conventional reed in which chrome oxide (Cr2O3) films are formed on the reed blades on the two sides of the reed that correspond to 20% of all the reed blades, the durability is increased to about three times or more.
  • Example 1 in the reed of the present invention in which DLC films are formed on the reed blades corresponding to 40% of all the reed blades from the side portions, the durability is increased to about seven times.
  • Example 2 three groups of reed blades made of a stainless steel are arranged in a reed.
  • DLC films are formed on the reed blades of the side portions of the reed which correspond to 10% of all the reed blades and on which the largest frictional force acts.
  • reed blades coated with chrome oxide films and reed blades coated with hard chrome plating films are arranged.
  • each third group corresponding to 60% of the central portion of the reed reed blades made of a stainless steel base material are arranged.
  • a durability similar to that obtained in the Example 1 can be obtained, and the cost can be decreased to half.
  • to uniform the wear amount throughout the whole reed by adopting a plurality of types of hard films is a means effective in decreasing the cost.
  • Example 3 in the reed of the present invention in which DLC films are formed on the reed blades corresponding to 70% of all the reed blades from the side portions of the reed, the durability is remarkably improved. Furthermore, as shown in Example 4, when both DLC films and hard chrome plating films are used, the cost can be decreased.
  • a fiber on which a fine ceramic powder having a special function is applied together with a fabric size is attracting attention as a functional new material fabric.
  • Comparative Example 6 when such a new material fabric is woven into a fabric by using conventional stainless steel reed blades, a defect occurs within a very short period of time, and thus a practical operation using this fiber is impossible.
  • Comparative Example 7 a reed in which titanium nitride (TiN) films known as ultra-hard films are formed on all the reed blades is used. In this case, however, the wear amount of the reed blades is large to cause a defect within 2 to 3- hours. Therefore, the operability is poor, and the operating efficiency of the loom is very low.
  • TiN titanium nitride
  • Example 5 when the reed of the present invention in which DLC films are formed on all the reed blades is used, a continuous operation of 8 hours is possible, and no problem occurs in the weaving operability.
  • reed blades coated with DLC films are arranged in the vicinities of the two side portions of the reed and reed blades coated with titanium nitride films are arranged at the central portion of the reed, a similar effect can be obtained while decreasing the cost.

Abstract

Un film de carbone diamanté (DLC) est déposé sur les dents d'un peigne faisant partie d'un métier rapide, à l'endroit où l'on souhaite que les dents présentent la résistance à l'usure la plus élevée. Lorsqu'on utilise de l'acier inoxydable comme matériau de base des dents, le film DLC est appliqué à travers une couche intermédiaire comprenant, par exemple, une couche de carbure de titane. Les dents du peigne recouvertes d'une couche DLC sont situées aux extrémités latérales du peigne qui sont susceptibles de subir une forte usure et, dans la partie médiane du peigne, les dents recouvertes d'un film dur relativement économique ou non traitées sont situées de sorte que les degrés d'usure soient uniformes pour l'ensemble de dents, afin de réduire les coûts. Le peigne ci-décrit peut être utilisé en combinaison avec différents types de fibres, telles que des fibres naturelles, des fibres synthétiques et des fibres provenant de nouveaux matériaux, et la durabilité du peigne est accrue de manière considérable à moindre coût.

Claims (6)

  1. Peigne (10) pour métier à grande vitesse, dans lequel un grand nombre de lames de peigne (20) ayant chacune une mince plaque métallique formée d'acier inoxydable comme métal de base, sont placées parallèlement les unes aux autres avec des espaces prédéterminés et sont fixées et maintenues dans un cadre (16) comprenant des lames principales droite et gauche (14) et des parties métalliques supérieure et inférieure (12), caractérisé en ce que, dans l'hypothèse où plusieurs lames de peigne adjacentes aux lames principales forment une paire de premiers groupes (201) de lames externes de peigne, et où plusieurs lames de peigne adjacentes aux premiers groupes de lames externes de peigne forment une paire de seconds groupes (202) de lames internes de peigne, chaque lame de chacun des premiers groupes de lames externes de peigne est revêtue d'un film DLC dans une partie au moins comprenant une partie d'usure maximale, si bien que l'amplitude d'usure d'une lame la plus externe de peigne de chacun des premiers groupes de lames externes de peigne correspond pratiquement à l'amplitude d'usure d'une lame la plus externe de peigne de chacun des seconds groupes de lames internes de peigne.
  2. Peigne pour métier à grande vitesse selon la revendication 1, caractérisé en ce que le film DLC est supporté par une couche intermédiaire.
  3. Peigne pour métier à grande vitesse selon la revendication 2, caractérisé en ce que la couche intermédiaire est une couche de carbure de titane.
  4. Peigne pour métier à grande vitesse selon la revendication 1, caractérisé en ce que les lames de peigne du second groupe sont en outre divisées en plusieurs groupes, et les lames de peigne des groupes divisés sont revêtues de films durs de types différents.
  5. Peigne pour métier à grande vitesse selon la revendication 1, caractérisé en ce que les lames de peigne d'un troisième groupe (203) qui sont formées uniquement d'acier inoxydable sont disposées afin qu'elles soient adjacentes aux lames de peigne du second groupe.
  6. Peigne pour métier à grande vitesse selon la revendication 1 ou 3, caractérisé en ce que des types différents de films durs sont sélectionnés dans le groupe comprenant des films de composés durs d'oxyde, de carbure ou de nitrure et des films ayant un dépôt de chrome dur.
EP91916946A 1990-09-28 1991-09-26 Peigne pour metier rapide Expired - Lifetime EP0550752B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP10186590 1990-09-28
JP101865/90U 1990-09-28
JP11933890 1990-11-16
JP119338/90U 1990-11-16
PCT/JP1991/001310 WO1992006234A1 (fr) 1990-09-28 1991-09-26 Peigne pour metier rapide

Publications (3)

Publication Number Publication Date
EP0550752A1 EP0550752A1 (fr) 1993-07-14
EP0550752A4 EP0550752A4 (fr) 1994-01-26
EP0550752B1 true EP0550752B1 (fr) 1996-04-10

Family

ID=26442641

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91916946A Expired - Lifetime EP0550752B1 (fr) 1990-09-28 1991-09-26 Peigne pour metier rapide

Country Status (6)

Country Link
EP (1) EP0550752B1 (fr)
JP (1) JP2953673B2 (fr)
KR (1) KR940010803B1 (fr)
DE (1) DE69118705T2 (fr)
HK (1) HK22297A (fr)
WO (1) WO1992006234A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10331503A1 (de) * 2003-07-10 2005-02-10 Maschinenfabrik Rieter Ag Fadenleitelement zum Führen von Fäden

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5447181A (en) * 1993-12-07 1995-09-05 Daido Hoxan Inc. Loom guide bar blade with its surface nitrided for hardening
DE4480113T1 (de) * 1993-12-22 1996-12-05 Citizen Watch Co Ltd Zähne für ein Blatt in einer Hochgeschwindigkeitswebmaschine (Webstuhl) und ein Verfahren zur Herstellung derselben
CN1037987C (zh) * 1993-12-23 1998-04-08 大同北产株式会社 带有渗氮的硬化表面的织机导纱梳栉筘片
DE4429943C1 (de) * 1994-08-24 1996-02-22 Dornier Gmbh Lindauer Verfahren zur Standzeiterhöhung von Webblattlamellen
JPH0987810A (ja) * 1995-09-27 1997-03-31 Nikko Kinzoku Kk 自動織機部品用Ｆｅ−Ｃｒ−Ｎｉ系合金
DE19635736C2 (de) * 1996-09-03 2002-03-07 Saxonia Umformtechnik Gmbh Diamantähnliche Beschichtung
FR2776310A1 (fr) * 1998-03-19 1999-09-24 Icbt Diederichs Sa Peigne pour machine a tisser
WO2005021851A1 (fr) * 2003-09-03 2005-03-10 Nv Bekaert Sa Lance a revetement dur
JP4922662B2 (ja) * 2006-05-17 2012-04-25 トーヨーエイテック株式会社 機械部品及びその製造方法
CN102719976A (zh) * 2012-07-06 2012-10-10 常熟市方园纺织器材厂 用于织布机钢筘的筘梁
CN103820930B (zh) * 2014-03-18 2015-04-29 湖州市千金丝织厂 一种可变异形筘
EP3792382B1 (fr) 2019-09-10 2024-02-07 Groz-Beckert KG Peigne doté d'une pluralité de lamelles

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JPS5460146A (en) * 1977-10-20 1979-05-15 Nippon Catalytic Chem Ind Germ bed cultivating method of edible mushroom
JPS5473964A (en) * 1977-11-15 1979-06-13 Teijin Ltd Weaving reed and production thereof
JPS6052658A (ja) * 1983-08-26 1985-03-25 大阪富士工業株式会社 金筬およびその製造方法
JPS6159688U (fr) * 1984-09-20 1986-04-22
JPS6191354A (ja) * 1984-10-11 1986-05-09 Canon Inc 耐摩耗性多層膜付き母材
JPS61102535U (fr) * 1984-12-13 1986-06-30
JP2515281B2 (ja) * 1985-04-17 1996-07-10 株式会社東芝 筬
JPS62103367A (ja) * 1985-10-28 1987-05-13 Nippon Telegr & Teleph Corp <Ntt> 炭素膜の合成方法
JPS62199851A (ja) * 1986-02-20 1987-09-03 旭化成株式会社 筬
JP2623611B2 (ja) * 1987-11-17 1997-06-25 株式会社ニコン 硬質炭素膜被覆を施した金属基体
JPH02100969A (ja) * 1988-10-07 1990-04-12 Idemitsu Petrochem Co Ltd 糸道

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10331503A1 (de) * 2003-07-10 2005-02-10 Maschinenfabrik Rieter Ag Fadenleitelement zum Führen von Fäden

Also Published As

Publication number Publication date
KR930702569A (ko) 1993-09-09
KR940010803B1 (ko) 1994-11-16
HK22297A (en) 1997-02-27
EP0550752A4 (fr) 1994-01-26
JP2953673B2 (ja) 1999-09-27
DE69118705D1 (de) 1996-05-15
EP0550752A1 (fr) 1993-07-14
DE69118705T2 (de) 1996-10-02
WO1992006234A1 (fr) 1992-04-16

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