EP0046119B1 - Aiguille à chas ouvrant - Google Patents

Aiguille à chas ouvrant Download PDF

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Publication number
EP0046119B1
EP0046119B1 EP81401280A EP81401280A EP0046119B1 EP 0046119 B1 EP0046119 B1 EP 0046119B1 EP 81401280 A EP81401280 A EP 81401280A EP 81401280 A EP81401280 A EP 81401280A EP 0046119 B1 EP0046119 B1 EP 0046119B1
Authority
EP
European Patent Office
Prior art keywords
needle
eye
blade
stem
needle according
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
Application number
EP81401280A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0046119A1 (fr
Inventor
Georges Jean Joseph Cahuzac
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.)
Airbus Group SAS
Original Assignee
Airbus Group SAS
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 Airbus Group SAS filed Critical Airbus Group SAS
Publication of EP0046119A1 publication Critical patent/EP0046119A1/fr
Application granted granted Critical
Publication of EP0046119B1 publication Critical patent/EP0046119B1/fr
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/02—Knitting tools or instruments not provided for in group D04B15/00 or D04B27/00
    • D04B35/08—Spring or bearded needles
    • 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
    • D03D47/22—Constructional features of the thread-engaging device on the inserters adapted for working a loop of weft part-way inserted in the shed and then straightened-out

Definitions

  • the invention relates to a needle intended for execution on textiles for operations with threads, rovings or flexible cords, composed of a barrel which bends at its end into a blade forming an eye.
  • a needle of this kind finds application in the field of weaving, and in particular in the manufacture of reinforcements by multidirectional weaving.
  • Such reinforcements are used, after impregnation with an appropriate binder, to produce structural assemblies in composite material which can be subjected to very severe mechanical and thermal stresses, for example nozzles, windows of radioelectric antennas for space shuttle, turbine blades, front points of reentry bodies, shields, etc.
  • a valve needle engages, valve open, in the structure being woven, hooks a thread and brings it through the structure, valve closed, the connection between threads being made by a chain stitch.
  • the conventional valve needle as used in the aforementioned patents comprises a head of too large appearance and dimensions which do not allow it to perform its function.
  • the risks of untimely hanging of the threads of the woven structure are multiplied not only in the event of a false maneuver, but also in normal use. Such a risk exists, for example, when the needle enters the fabric, then backs up before its head is pulled out on the opposite side.
  • valve needle In addition, it is sometimes difficult to grasp with a valve needle, having regard to its size, a high number of threads, or a significant thread and / or strand of threads since the threads grasped tend to escape before the valve closes; if it is necessary to enter a high number of threads, it is necessary to use a valve needle having a large beak causing a certain fragility in this area.
  • the most frequently used textile structure is carbon thread or wick, which is very fragile and therefore liable to be easily damaged by the movable valve.
  • the present invention relates to a needle allowing in particular the production of reinforcements of any shape by multidirectional weaving.
  • This needle which is of the type indicated at the beginning, is characterized by the fact that the terminal part of its barrel is curved into an elastic blade whose free end is normally applied against said barrel to form the eye of the needle. The eye formed between the blade and the barrel being then closed, the end of the blade can deviate from it by elastic deformation of said blade under the action of an opener to allow the introduction of wires into the eye thus opened. .
  • An opening eye needle according to the invention can be used in place of a valve needle, without having the disadvantages. This is due to the fact that the eye of the needle is normally closed, the needle being able to circulate in this state through a woven structure, in one direction as in the opposite direction, without any risk of catching the threads of the latter. .
  • the eye is only opened, by the opener, at the time and place where threads must be gripped by the needle, to be pulled for example through the woven structure, while a valve needle must cross the woven structure with the valve open to pick up threads to be grasped, without the possibility of retreating if necessary.
  • the part of the barrel of the needle facing the elastic blade is thinner than the rest of the barrel.
  • the elastic blade should be substantially rectilinear. Thanks to these provisions, a needle according to the invention present in the region of its eye opening a total section barely greater than in the region of its barrel, which promotes its penetration into the woven structure and minimizes the risks of disturbance of this one.
  • the end of the barrel forming the head of the needle is preferably shaped as a point, so as to facilitate the penetration of the needle into a woven structure, in order to grasp threads.
  • the end of the barrel can also offer a cup-shaped cavity into which the end of a metal rod which, previously incorporated into the woven structure, must be driven out by the needle.
  • a needle according to the invention avoids the unfortunate attachment of the weaving material both in normal use and in the event of a false maneuver. It allows you to grab a large number of wires or a large diameter wire, and to use a very fragile wire without damaging it. It is easy to manufacture and its constitution is such that it can present a head as thin as one may wish.
  • Fig. shows an alternative embodiment in which the head 4 of the needle 1 does not have a tip 4 ′, but a cavity 4 "of a shape adapted to that of the end of the rods which the needle must possibly push back when descending through the woven structure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Looms (AREA)
  • Knitting Machines (AREA)
  • Treatment Of Fiber Materials (AREA)
EP81401280A 1980-08-11 1981-08-10 Aiguille à chas ouvrant Expired EP0046119B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8017665 1980-08-11
FR8017665A FR2488292A1 (fr) 1980-08-11 1980-08-11 Aiguille a chas ouvrant

Publications (2)

Publication Number Publication Date
EP0046119A1 EP0046119A1 (fr) 1982-02-17
EP0046119B1 true EP0046119B1 (fr) 1984-05-16

Family

ID=9245073

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81401280A Expired EP0046119B1 (fr) 1980-08-11 1981-08-10 Aiguille à chas ouvrant

Country Status (6)

Country Link
US (1) US4555918A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0046119B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5761742A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA1196206A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3163640D1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2488292A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2639964B1 (fr) * 1988-12-06 1991-01-11 Aerospatiale Aiguille a chas ouvrant perfectionnee
US6036300A (en) 1992-02-26 2000-03-14 Canon Kabushiki Kaisha Method for recording image and apparatus therefor and recorded matter by such an apparatus
US5685175A (en) * 1996-02-01 1997-11-11 Flavin; James M. Thread positioner
CN104073970B (zh) * 2014-06-30 2016-08-24 常州市第八纺织机械有限公司 一种钩针

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE431371C (de) * 1926-07-08 Schubert & Salzer Maschinen Hakennadel fuer Wirkmaschinen
CH136019A (de) * 1928-12-05 1929-10-31 Pfaeuti Ernest Nadel für Strick-, Stopf- und ähnliche Maschinen.
US2202945A (en) * 1939-03-16 1940-06-04 Torrington Co Method of making spring beard needles
US2403961A (en) * 1944-08-18 1946-07-16 Vanity Fair Mills Inc Knitting machine needle and means for operating same
US2626514A (en) * 1950-07-19 1953-01-27 Alfred Hofmann Needle Works In Knitting needle
US2633721A (en) * 1950-07-27 1953-04-07 Alfred Hofmann Needle Works In Spring beard needle and method of using same
DE1217540B (de) * 1963-02-27 1966-05-26 Groz & Soehne Theodor Strickmaschinennadel
IT1012628B (it) * 1974-05-20 1977-03-10 Comez Spa Ago automatico a becco laterale per telai a crochet raschel ra schel catena e similari
FR2395340A1 (fr) * 1977-06-20 1979-01-19 Aerospatiale Procede et machine de tissage tridimensionnel pour la realisation d'armatures tissees de revolutions creuses
FR2488291B1 (fr) * 1980-08-11 1986-04-18 Aerospatiale Procede et appareillage automatique de lacage pour la realisation de pieces a armature tissee multidirectionnelle

Also Published As

Publication number Publication date
DE3163640D1 (en) 1984-06-20
FR2488292A1 (fr) 1982-02-12
EP0046119A1 (fr) 1982-02-17
US4555918A (en) 1985-12-03
FR2488292B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1985-04-12
CA1196206A (fr) 1985-11-05
JPS5761742A (en) 1982-04-14
JPS6332904B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1988-07-01

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