EP0584429B1 - Pince-fil pour une pince d'amenée et métier à pince avec pince-fil - Google Patents

Pince-fil pour une pince d'amenée et métier à pince avec pince-fil Download PDF

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Publication number
EP0584429B1
EP0584429B1 EP92810648A EP92810648A EP0584429B1 EP 0584429 B1 EP0584429 B1 EP 0584429B1 EP 92810648 A EP92810648 A EP 92810648A EP 92810648 A EP92810648 A EP 92810648A EP 0584429 B1 EP0584429 B1 EP 0584429B1
Authority
EP
European Patent Office
Prior art keywords
clamping
clamp
clamping gap
accordance
bounding
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
EP92810648A
Other languages
German (de)
English (en)
Other versions
EP0584429A1 (fr
Inventor
Anton Egloff
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.)
Gividi Italia SpA
Original Assignee
Gividi Italia SpA
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 Gividi Italia SpA filed Critical Gividi Italia SpA
Priority to DE59208612T priority Critical patent/DE59208612D1/de
Priority to EP92810648A priority patent/EP0584429B1/fr
Priority to US08/096,331 priority patent/US5415206A/en
Priority to JP21062893A priority patent/JP3602558B2/ja
Publication of EP0584429A1 publication Critical patent/EP0584429A1/fr
Application granted granted Critical
Publication of EP0584429B1 publication Critical patent/EP0584429B1/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
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/20—Constructional features of the thread-engaging device on the inserters
    • D03D47/23—Thread grippers
    • D03D47/233—Carrying grippers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/39—Cord and rope holders
    • Y10T24/3969—Sliding part or wedge

Definitions

  • the present invention relates to a thread clamp for a rapier gripper of a rapier weaving machine with a clamping gap formed by a first and second clamping member for holding the weft thread, and a rapier weaving machine with thread clamp.
  • Such thread clamps have the disadvantage that the contact areas between the clamping surface and the thread are small, as a result of which a strong local pressure is exerted on the thread. The result is that when the thread gripper is transferred to the slave gripper in the thread clamp, individual filaments remain in the clamping gap. This leads to visible defects in fabrics when continuous thread or twisted thread is processed.
  • a thread clamp according to the preamble of claim 1 is known from EP-A-0 207 533.
  • the invention has for its object to provide a thread clamp for a gripper, in which wefts with different diameters are securely held while avoiding the disadvantages mentioned.
  • the advantages of the thread clamp according to the invention are the simple construction paired with a secure holding of the weft thread by elastic deformations of the weft thread and a partial wrap around one of the clamping members.
  • the thread clamp essentially consists of a body 1 and a needle 2, which form a clamping gap 3 in order to hold a weft thread 4.
  • the body has a section 5 for receiving the needle 2, which has a convex region 6 at the front end and merges into a section 7 at the other end in order to fasten the body 1 from the top to a gripper housing (not shown).
  • a bore 8 is provided in the body 1, the peripheral surface of which forms a surface 9 delimiting the clamping gap 3.
  • the bore 8 is formed obliquely with respect to the underside of the body in such a way that the outlet opening adjoins the convex region 6 of the body 1 (FIG. 3).
  • the needle has a circular cross-sectional shape.
  • the needle 2 contains a first section 11 with which the needle 2 is fixed to the body 1, a second section 12 adjoining the first section 11 with which the needle 2 is mounted in the body 1 and one to the second section 12 Adjacent conical section 13, which tapers towards the free end and whose lateral surface forms the other surface 14 delimiting the clamping gap 3.
  • the needle 2 arranged in the through bore 8 is locked by an organ 15.
  • a spring (not shown) is provided which holds the member 15 in the locking position shown in FIG. 2. By pressing in the direction of arrow A, the organ 15 is moved against the spring force into a release position in which the needle 2 can be replaced or exchanged.
  • the needle 2 is arranged in the through-hole in such a way that the conical section 13 on the underside of the body protrudes and extends over the convex region 6 of the body 1.
  • this arrangement forms the clamping gap 3 and an inlet gap 16 preceding it.
  • the clamping gap 3 is limited on the one hand by the wall of the through hole 8 and on the other hand by the lateral surface of the conical section 13 of the needle 2. This creates a clamping gap with a curved cross-sectional shape with a continuously decreasing width in the effective direction and a continuously increasing cross-sectional contour.
  • the yarn 4 When the yarn is introduced into the nip 3, the yarn 4 is deformed, with a deformation of the yarn cross section due to the narrowing nip and a looping of the needle 2 due to the increasing cross-sectional contour of the nip occurring.
  • the clamping and the clamping point 17 are determined by a frictional force developing in the clamping gap, which is dependent on the tensile force acting on the yarn, the degree of deformation of the yarn and the degree of wrap of the conical section 13 of the needle 2 (FIG. 3). Due to the deformation of the yarn 4 and the degree of wrapping of the yarn 4, the individual fibrils of the yarn are held on the conical section 13 of the needle 2.
  • the clamping point 17 is located in such a way that a free gap section is present between the clamped yarn and the gap base.
  • This free gap section forms a free space for individual fibrils or fibers which are pulled along when the yarn is pulled out. This prevents yarn flight from remaining in the nip. This choice allows also keep yarns of different diameters in the same thread clamp.
  • the needle 2 is arranged displaceably with respect to the body 1.
  • a leaf spring 18 is fastened to section 7 of body 1 by means of a screw 19.
  • the leaf spring 18 has a bent section 20, the edge of which is intended to bear against the end face of the stop section 11.
  • the needle 6 can be replaced or exchanged if the section is brought into a release position by pressure in the direction of the arrow A.
  • FIG. 5 shows cross-sectional shapes of the conical section 13 of the needle 2, the peripheral surfaces of which form a surface delimiting the clamping gap 3.
  • This surface can be a cylindrical surface, the generatrix of which is a straight line, or a surface formed from flat partial surfaces.
  • FIG. 6 shows the arrangement of a thread clamp in a rapier head of a rapier weaving machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Claims (9)

  1. Pince-fil, pour une pince d'amenée d'un métier à tisser à pinces, comportant un intervalle de serrage, constitué par un premier et un deuxième organes de serrage afin de fixer le fil de trame, caractérisé en ce que
       les premier et deuxième organes de serrage (1, 2) sont fixés, en s'engageant au moins partiellement l'un dans l'autre, de manière que les surfaces (9, 14), délimitant l'intervalle de serrage (3), du premier et du deuxième organes de serrage (1, 2) constituent un intervalle de serrage (3) dont la section transversale présente une forme arquée, d'une dimension allant en diminuant de façon continue et d'un contour allant dans la direction du tissage, intervalle de serrage (3) dans lequel un fil de trame (4), introduit en exerçant simultanément une déformation, est maintenu par frottement.
  2. Pince selon la revendication 1, caractérisée en ce que les surfaces (9, 14) délimitant l'intervalle de serrage (3) présentent une section transversale dont le contour est choisi dans le groupe des formes ronde, ovale, polygonale, en étoile ou en segments.
  3. Pince selon l'une des revendications 1 ou 2, caractérisée en ce que les surfaces (9, 14) délimitant l'intervalle de serrage (3) présentent une section transversale dont le contour est identique ou différent.
  4. Pince selon la revendication 1, caractérisée en ce que la génératrice des surfaces (9, 14) délimitant l'intervalle de serrage (3) est une droite.
  5. Pince selon la revendication 1, caractérisée en ce que les surfaces (9, 14) délimitant l'intervalle de serrage (3) sont constituées de surfaces partielles planes.
  6. Pince selon la revendication 1, caractérisée en ce que l'intervalle de serrage (3) est délimité, d'une part, par une surface concave (9) et, d'autre part, par une surface convexe (14).
  7. Pince selon la revendication 1, caractérisée en ce que le premier organe de serrage (1) présente un perçage traversant (8), qui constitue une surface (9) délimitant l'intervalle de serrage (3), et en ce que le deuxième organe de serrage (2) est une aiguille comportant un tronçon (13) allant en s'effilant et constituant l'autre surface (14) délimitant l'intervalle de serrage (3).
  8. Pince selon la revendication 1, caractérisée en ce que le premier organe et le deuxième organe de serrage (1, 2) sont disposés mobiles l'un par rapport à l'autre, afin de faciliter l'introduction et l'extraction du fil de trame (4), par une modification de la valeur de l'intervalle de serrage (3).
  9. Métier à tisser à pinces, comportant un pince-fil selon l'une des revendications 1 à 8.
EP92810648A 1992-08-25 1992-08-25 Pince-fil pour une pince d'amenée et métier à pince avec pince-fil Expired - Lifetime EP0584429B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE59208612T DE59208612D1 (de) 1992-08-25 1992-08-25 Fadenklemme für einen Bringergreifer und Greiferwebmaschine mit Fadenklemme
EP92810648A EP0584429B1 (fr) 1992-08-25 1992-08-25 Pince-fil pour une pince d'amenée et métier à pince avec pince-fil
US08/096,331 US5415206A (en) 1992-08-25 1993-07-23 Yarn clamp for a bringer gripper
JP21062893A JP3602558B2 (ja) 1992-08-25 1993-08-25 グリッパ式織機における搬送用グリッパの糸保持装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92810648A EP0584429B1 (fr) 1992-08-25 1992-08-25 Pince-fil pour une pince d'amenée et métier à pince avec pince-fil

Publications (2)

Publication Number Publication Date
EP0584429A1 EP0584429A1 (fr) 1994-03-02
EP0584429B1 true EP0584429B1 (fr) 1997-06-11

Family

ID=8211971

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92810648A Expired - Lifetime EP0584429B1 (fr) 1992-08-25 1992-08-25 Pince-fil pour une pince d'amenée et métier à pince avec pince-fil

Country Status (4)

Country Link
US (1) US5415206A (fr)
EP (1) EP0584429B1 (fr)
JP (1) JP3602558B2 (fr)
DE (1) DE59208612D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7482291B2 (en) 2005-03-18 2009-01-27 Saint-Gobain Technical Fabrics Canada, Ltd. Low profile reinforcing tape
CN101668885B (zh) * 2007-02-26 2011-10-05 必佳乐有限公司 片梭织机及设在该片梭织机上的送纬片梭和偏转引导装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0811712B1 (fr) * 1996-06-07 2000-04-05 Sulzer Textil Ag Pince-fil pour griffe d'amenée et griffe d'amenée avec un tel pince-fil
EP0864679B1 (fr) * 1997-03-14 2002-12-18 Sulzer Textil AG Pince de griffe pour une griffe d'amenée et métier à tisser avec une pince de griffe
JP5410777B2 (ja) * 2009-02-16 2014-02-05 津田駒工業株式会社 インサートレピア
JP2010255147A (ja) * 2009-04-28 2010-11-11 Tsudakoma Corp キャリアレピア

Family Cites Families (17)

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Publication number Priority date Publication date Assignee Title
US3125978A (en) * 1964-03-24 Self-aligning chock
US104654A (en) * 1870-06-21 Improved clothes-pin
US864937A (en) * 1906-11-17 1907-09-03 Charles Gaston Thompson Clothes-line fastener.
CH71306A (de) * 1915-04-23 1916-05-16 Arnold Kuendig Zusammenklappbarer Stiefelzieher
US2281204A (en) * 1940-12-04 1942-04-28 American Paper Tube Co Magnetic tension device
GB727988A (en) * 1952-04-01 1955-04-13 Ferroconcrete Lancashire Ltd Improvements in or relating to gripping devices for releasably holding an end of a wire or the like whilst the latter is under tension
FR1159796A (fr) * 1956-09-12 1958-07-02 Pince à linge indémontable en une seule pièce
CH525983A (de) * 1970-01-16 1972-07-31 Fischer Ag Brugg Georg Schussgarn-Auszuggreifer für eine Webmaschine
CH508075A (de) * 1970-06-04 1971-05-31 Saurer Ag Adolph Garnhalteeinrichtung an einem Schussfadeneintragsorgan einer Webmaschine
ES400984A1 (es) * 1972-03-04 1975-02-01 Desveus Duran Perfeccionamientos en la construccion de maquinas de tejer sin lanzadera.
FR2218412B1 (fr) * 1973-02-20 1976-09-10 Lebocey Industrie
US4553294A (en) * 1979-04-10 1985-11-19 Larsen Walter L Clip-type hook fastening device
GB2071253A (en) * 1980-03-07 1981-09-16 Amf Inc Tweezer wedge device
JPS57134382A (en) * 1981-01-08 1982-08-19 Tosutado Reimondo Cleat tightly mooring mooring rope
BE902141A (nl) * 1985-04-09 1985-10-09 Picanol Nv Verbeterde grijpers voor weefmachines.
EP0457718B1 (fr) * 1990-05-16 1994-07-06 Sulzer RàœTi Ag Pince de griffe pour métiers à tisser
US5307751A (en) * 1992-07-02 1994-05-03 David Shell Device for releaseably connecting rope ends in tension

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7482291B2 (en) 2005-03-18 2009-01-27 Saint-Gobain Technical Fabrics Canada, Ltd. Low profile reinforcing tape
US8828537B2 (en) 2005-03-18 2014-09-09 Saint-Gobain Adfors Canada, Ltd. Low profile reinforcing tape
CN101668885B (zh) * 2007-02-26 2011-10-05 必佳乐有限公司 片梭织机及设在该片梭织机上的送纬片梭和偏转引导装置

Also Published As

Publication number Publication date
DE59208612D1 (de) 1997-07-17
US5415206A (en) 1995-05-16
EP0584429A1 (fr) 1994-03-02
JP3602558B2 (ja) 2004-12-15
JPH07118994A (ja) 1995-05-09

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