EP0373033A1 - Nadel mit verbessertem offenem Öhr - Google Patents

Nadel mit verbessertem offenem Öhr Download PDF

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Publication number
EP0373033A1
EP0373033A1 EP89403295A EP89403295A EP0373033A1 EP 0373033 A1 EP0373033 A1 EP 0373033A1 EP 89403295 A EP89403295 A EP 89403295A EP 89403295 A EP89403295 A EP 89403295A EP 0373033 A1 EP0373033 A1 EP 0373033A1
Authority
EP
European Patent Office
Prior art keywords
needle
eye
hole
barrel
opening
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.)
Granted
Application number
EP89403295A
Other languages
English (en)
French (fr)
Other versions
EP0373033B1 (de
Inventor
Bruno Caramaschi
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 EP0373033A1 publication Critical patent/EP0373033A1/de
Application granted granted Critical
Publication of EP0373033B1 publication Critical patent/EP0373033B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21G—MAKING NEEDLES, PINS OR NAILS OF METAL
    • B21G1/00—Making needles used for performing operations
    • B21G1/02—Making needles used for performing operations of needles with eyes, e.g. sewing-needles, sewing-awls
    • B21G1/04—Making needles used for performing operations of needles with eyes, e.g. sewing-needles, sewing-awls of needles specially adapted for use in machines or tools
    • 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
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/10—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
    • D04H3/115—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically by applying or inserting filamentary binding elements

Definitions

  • the present invention relates generally to the manufacture of composite reinforcing elements by weaving or multidirectional knitting, and it relates more particularly to a lacing needle used in the final phase of this manufacture.
  • a preform is produced by laying a first series of parallel plies of threads, or fibers, on a set of removable rigid rods, perpendicular to them and intertwined with them, of a second series of plies of threads or fibers perpendicular to the threads of the first series of plies and to said rods and intertwined therewith, said rods then being driven out and successively replaced by wires introduced by means of one or more several needles, in a so-called "lacing" operation.
  • opening eye needles are used, for example of the type described in FR-A-2,488,292.
  • These needles which can be straight or curved, advantageously comprise at their end near the eye a blind axial hole constituting a housing capable of receiving a stud provided at the end of each rod, these rods being driven axially by a thrust exerted by the needle when the latter enters the preform to deposit loops of threads forming a third series of plies perpendicular to the first two.
  • each needle In its course, straight or curved, each needle first crosses the preform by pushing a rod in front of it, then grabs a needle of thread, then goes back up through the preform by replacing the rod driven by the thread. This replacement finished, the needle goes back down into the preform by a few centimeters in order to release the thread needle (dropped from the loop) and begins a new race to drive out and replace the next rod with a loop of thread.
  • the pin of the rod cannot penetrate into the hole of the needle and escapes at the start, and the rod then locks in the preform, which causes deformations and degradations of the radial and circumferential wires.
  • the needle only partially descends the rod which ends up blocking in the preform, causing the same degradations and deformations as in the previous case.
  • the nipple succeeds in penetrating the hole of the needle, but is blocked by tightening in this one, and the stem cannot be separated from the needle at the end of its downward stroke.
  • the object of the invention is therefore to remedy these drawbacks by producing a needle of the aforementioned type, the axial hole at its end cannot be filled with fiber debris and cannot be blocked, allowing perfect coupling of the rod with the needle and therefore guaranteed release of the rod after crossing the preform.
  • the subject of the invention is for this purpose an opening eye needle intended to be used in the lacing phase of the three-dimensional weaving of a composite reinforcing element, for driving out rigid rods and replacing them with loops of thread, comprising an axial blind hole at its end close to the eye, characterized in that the bottom of the said hole is open and connected to an oblique channel with respect to the barrel of the needle and opening laterally through an orifice in the vicinity of the eye, between the latter and the end of the barrel.
  • said oblique channel forms with the axis of the barrel of the needle an angle between 30 and 90 °.
  • said angle is 45 °.
  • references 1a, 1b, 1c, 1d denote a first series of plies of threads, or fibers, deposited interlaced around rigid rods 2, perpendicular to them, in a first direction
  • references 3a, 3b, 3c denote a second series of plies of threads or fibers deposited perpendicularly to said rods, in a second direction.
  • each rigid rod 2 has a lower end (not visible) removably fixed on a support (not shown) and an upper end having a part of reduced diameter, or stud 4.
  • an opening eye needle 5 of known type having at its end near the eye a blind axial hole 6 adapted to cooperate with the stud 4 of each rod 2 which s 'engages in this hole during each downward stroke of the needle 5 through the plies of threads 1a, 1b, 1c, 1d .... etc. and sheets 3a, 3b, 3c ... etc. so that the needle drives out a corresponding rod and deposits by raising a loop of thread intended to replace said rod and gripped by its opening eye, as known per se.
  • the reference 8 designates an improved needle according to the invention.
  • the needle 8 is an opening eye needle of the type described in FR-A-2,488,292, the barrel of which is curved in its terminal part in order to form an elastic blade 10, the free end 11 of which is normally applied against the barrel to form the eye 12 of the needle, and the end of the barrel adjacent to the eye has an axial hole 13.
  • the bottom of the axial hole 13 is connected to the outside by a channel 14 oblique to the axis of the barrel and opening laterally on one side of the needle relative to the eye 12, through an orifice 15.
  • This oblique channel ensures a constant evacuation of the fibrils which can be accumulated in the hole 13 as and when they penetrate therein.
  • the Applicant has found that if the angle formed by the channel 14 with the axis of the barrel of the needle was approximately 90 ° the fibrils evacuated badly and that if this angle was approximately 30 °, the fibrils evacuated well but that on the other hand the resistance of the needle was dangerously weakened. These same tests have shown that the optimum angle ensuring both satisfactory evacuation of the fibrils and not reducing the mechanical resistance of the needle was approximately 45 °.
  • the orifice 15 which is located between the eye 12 and the end of the needle, opens on one side, preferably in the direction perpendicular to that of the opening of the eye 12.
  • Machining the hole has proven to be an easy operation, which can therefore be carried out on existing needles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Woven Fabrics (AREA)
  • Looms (AREA)
  • Nonwoven Fabrics (AREA)
  • Knitting Machines (AREA)
  • Moulding By Coating Moulds (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP89403295A 1988-12-06 1989-11-28 Nadel mit verbessertem offenem Öhr Expired - Lifetime EP0373033B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8815969 1988-12-06
FR8815969A FR2639964B1 (fr) 1988-12-06 1988-12-06 Aiguille a chas ouvrant perfectionnee

Publications (2)

Publication Number Publication Date
EP0373033A1 true EP0373033A1 (de) 1990-06-13
EP0373033B1 EP0373033B1 (de) 1993-05-19

Family

ID=9372618

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89403295A Expired - Lifetime EP0373033B1 (de) 1988-12-06 1989-11-28 Nadel mit verbessertem offenem Öhr

Country Status (6)

Country Link
US (1) US5038836A (de)
EP (1) EP0373033B1 (de)
JP (1) JPH02200844A (de)
CA (1) CA2003487C (de)
DE (1) DE68906659T2 (de)
FR (1) FR2639964B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2941710A1 (fr) * 2009-02-05 2010-08-06 Airbus France Procede d'assemblage par couture d'elements fibreux et dispositif pour sa mise en oeuvre.
CN108486771A (zh) * 2018-03-29 2018-09-04 武汉纺织大学 一种针织非织联合布的制备方法

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5183063A (en) * 1991-06-10 1993-02-02 Larry Lee Ringle Dental floss and pre-threaded leader
US5246040A (en) * 1992-04-09 1993-09-21 Angus Fire Armour Corporation Method and apparatus for weaving an indicia into a woven circular fabric
US5685175A (en) * 1996-02-01 1997-11-11 Flavin; James M. Thread positioner
US20050178807A1 (en) * 2004-02-12 2005-08-18 Fitzpatrick Richard M. Threading device for a mesh style equipment vest
US20090266281A1 (en) * 2008-04-25 2009-10-29 Edward M. Son Easily Thread-able Needle
CN102348842A (zh) * 2009-03-13 2012-02-08 帕梅拉·特纳 开眼式缝衣针

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH136019A (de) * 1928-12-05 1929-10-31 Pfaeuti Ernest Nadel für Strick-, Stopf- und ähnliche Maschinen.
US2633721A (en) * 1950-07-27 1953-04-07 Alfred Hofmann Needle Works In Spring beard needle and method of using same
EP0046119A1 (de) * 1980-08-11 1982-02-17 AEROSPATIALE Société Nationale Industrielle Nadel mit einem Öhr, welches geöffnet werden kann

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US272993A (en) * 1883-02-27 Half to ford
US658508A (en) * 1900-04-30 1900-09-25 George O Redpath Needle for weaving cane fabrics.
JPS5319263U (de) * 1976-07-28 1978-02-18
FR2488291B1 (fr) * 1980-08-11 1986-04-18 Aerospatiale Procede et appareillage automatique de lacage pour la realisation de pieces a armature tissee multidirectionnelle
DE3600621C1 (de) * 1986-01-11 1987-05-07 Groz & Soehne Theodor Zungennadel fuer Textilmaschinen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH136019A (de) * 1928-12-05 1929-10-31 Pfaeuti Ernest Nadel für Strick-, Stopf- und ähnliche Maschinen.
US2633721A (en) * 1950-07-27 1953-04-07 Alfred Hofmann Needle Works In Spring beard needle and method of using same
EP0046119A1 (de) * 1980-08-11 1982-02-17 AEROSPATIALE Société Nationale Industrielle Nadel mit einem Öhr, welches geöffnet werden kann

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2941710A1 (fr) * 2009-02-05 2010-08-06 Airbus France Procede d'assemblage par couture d'elements fibreux et dispositif pour sa mise en oeuvre.
CN108486771A (zh) * 2018-03-29 2018-09-04 武汉纺织大学 一种针织非织联合布的制备方法

Also Published As

Publication number Publication date
CA2003487A1 (fr) 1990-06-06
CA2003487C (fr) 1998-12-29
EP0373033B1 (de) 1993-05-19
DE68906659D1 (de) 1993-06-24
US5038836A (en) 1991-08-13
DE68906659T2 (de) 1993-08-26
FR2639964B1 (fr) 1991-01-11
JPH02200844A (ja) 1990-08-09
FR2639964A1 (fr) 1990-06-08

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