EP0678611B1 - Nadelkopf und Vorrichtung zur Herstellung einer Verstärkungsplatte für einen Teil Verbundmaterial - Google Patents

Nadelkopf und Vorrichtung zur Herstellung einer Verstärkungsplatte für einen Teil Verbundmaterial Download PDF

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Publication number
EP0678611B1
EP0678611B1 EP95400732A EP95400732A EP0678611B1 EP 0678611 B1 EP0678611 B1 EP 0678611B1 EP 95400732 A EP95400732 A EP 95400732A EP 95400732 A EP95400732 A EP 95400732A EP 0678611 B1 EP0678611 B1 EP 0678611B1
Authority
EP
European Patent Office
Prior art keywords
needle
thread
stitching head
wire
machine
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
EP95400732A
Other languages
English (en)
French (fr)
Other versions
EP0678611A1 (de
Inventor
Georges 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 EP0678611A1 publication Critical patent/EP0678611A1/de
Application granted granted Critical
Publication of EP0678611B1 publication Critical patent/EP0678611B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D04H18/00—Needling machines
    • D04H18/02—Needling machines with 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
    • D04H18/00—Needling machines
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B23/00—Sewing apparatus or machines not otherwise provided for
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B55/00—Needle holders; Needle bars
    • D05B55/06—Needle guides; Needle protectors
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B29/00—Pressers; Presser feet
    • D05B29/06—Presser feet
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/02—Reinforcing materials; Prepregs

Definitions

  • the present invention relates to a tapping head which can be used in a machine for making a frame in plate form for a piece of composite material, formed of said reinforcement embedded in a hardened matrix, said reinforcement comprising overlapping plies of wire (in carbon, glass, boron, in particular), and a machine comprising such a stitching head.
  • a particular device comprising a tube, open to its lower end and having an opening at its part upper, for the passage of a continuous wire.
  • This head of removal allows each section of wire to be stretched between fixing points in position of its ends, materialized by pins temporarily installed in the support, made of a material that can be penetrated by said pins, like a foam of synthetic material. After formation of the superimposed layers of wire and joining of said plies together, the pins are removed of support.
  • the joining together of the whole superimposed sheets is made by stitching without knotting of a continuous thread crossing said plies and, this, using a stitching head, mounted on said machine, comprising a support carrying, on the one hand, means of binding to the machine and, on the other hand, a needle, as well that means for guiding the securing wire up to said needle.
  • the object of the present invention is to avoid these drawbacks, and relates to a stitching head, usable in a machine for the realization of a plate-shaped reinforcement for a piece of composite material, thanks to which the holding mechanical reinforcement is ensured without the need for it, for this, to make a kind of "fabric" of threads of weft and interwoven binding threads.
  • the stitching head usable in a machine for the realization of a plate-shaped reinforcement for a piece of composite material, formed of said frame embedded in a hardened matrix, said reinforcement comprising overlapping layers of thread, crossed by a thread of joining, said head comprising a support bearing, on the one hand, means of connection to the machine and, on the other hand, a needle, as well as means for guiding the thread of joining up to said needle, is remarkable, according to the invention, in that said stitching head comprises mechanical means for compacting said superimposed layers yarn associated with said needle.
  • the mechanical strength of the armature is only obtained by the friction of the securing wire on the sections of wire constituting the overlapping plies, without apply stress to said securing wire, and this thanks to the prior packing of the sheets superimposed to achieve a sufficient density of sections of wire which constitute them.
  • Said mechanical means of compaction include a presser foot operated in connection with the movement of said needle.
  • Said stitching head has a support rotary at the lower end of which is mounted said needle, associated with the presser foot.
  • said needle is hollow and said rotary support is traversed by a channel of wire guide connected to said needle.
  • said stitching head comprises a spring mechanism, controlling the presser foot, comprising a connecting bar, pushed down by a compression spring retained by a stop in contact of the needle holder.
  • said needle has an oblique through eye and is associated with a thread guide comprising a body obliquely crossed by a wire passage channel, the lower end of which is flared.
  • said stitching head comprises a mechanism for actuating the presser foot assembly, thread guide and needle, consisting of a first actuating cylinder a plate on which said assembly is mounted, a axis carrying the wire guide and a second cylinder actuating the crowbar.
  • said needle can be held on said plate, by means of a support, using of conical pliers tightened by a nut.
  • the axis carrying the thread guide can be stressed by a tension spring and retained by a stop.
  • Figure 1 shows schematically in perspective an example machine for producing a frame in the form of plate for a piece of composite material.
  • Figure 2 is a schematic sectional view illustrating a first embodiment of a stitching head according to the invention.
  • Figures 3 and 4 are views in longitudinal section of two alternative embodiments of the needle used in the stitching head of the invention.
  • Figure 5 shows, in section, a thread guide for the needle in Figure 4.
  • Figure 6 schematically illustrates a second example of production of a stitching head according to the invention provided a wire guide according to figure 5.
  • FIGS 7A to 7D schematically illustrate the process for joining the superimposed layers of the frame produced in accordance with the invention.
  • the machine 10 of FIG. 1, described in patent EP-B-0 284 497, includes a frame provided with a base 11 and vertical uprights 12, joined at their upper part by a horizontal cross 13.
  • Each vertical upright 12 has a slide 14, and a transverse bar 15 is fixed in the vicinity of its ends in slides 16 mounted in the slides 14 in which they can be immobilized by screws 17. With this arrangement, the bar 15 can be adjusted in height on the uprights 12.
  • a carriage 18 On the bar 15, is mounted a carriage 18 on which is provided a horizontal arm 19 sliding transversely and adjustable relative to the bar 15.
  • the horizontal arm 19 carries a vertical arm 20 also mounted sliding and adjustable.
  • the vertical arm 20 comprises fixing means adapted to receive a head stitching P.
  • the machine further comprises a base 22, supporting a support 6 for a frame 1, having a shape of convex plate.
  • This frame 1 can advantageously be carried out, as described elsewhere, in the requests for French patent, in the name of the plaintiff, filed on 18 April 1994 under the headings "Process and machine for the making a frame for a piece of material composite "and” Method and machine for producing a plate-shaped frame for a piece of material composite”.
  • the end 21 can be adjusted in any desired position relative to support 6, according to three orthogonal axes X, Y and Z by means of motors M1, M2 and M3 which are shown, for example, mounted on the bar 15 and at the ends of the arms 19 and 20 and entrain these along these three axes through systems known suitable for pinion and rack, worm or other.
  • FIG. 2 A first example of embodiment of a stitching head P is shown in Figure 2.
  • a support 40 mounted on the block 29 linked to the machine 10, in which is arranged a guide 41, which can rotate on bearings 42 thanks to drive means not shown, guide which is crossed by a longitudinal channel 41A for the passage of the wire F, unwound from the coils 37 (FIG. 1), and of which the lower end 41B carries the needle 33.
  • a crowbar 43 is associated with needle 33, which can be animated with a movement parallel to the longitudinal extension of the needle using a spring mechanism 44.
  • the spring mechanism 44 controlling the presser foot 43, includes link bar 45, push downwards by a compression spring 44A and retained by a stop 44B in contact with the support 40 of the needle 33, when the needle is outside the tablecloths deposited.
  • the presser foot 43 is retained by the plies and the spring 44A exerts an effort of compression on them.
  • the needle 33 can be a hollow needle, crossed by an axial channel 46, for the passage of the wire, and comprising a non-through eye 47, into which the canal opens laterally and obliquely 46.
  • the needle 33 can advantageously be as represented in FIG. 4, that is to say that it comprises an oblique through eye 48 opening into a groove longitudinal 49 of section in an arc, the depth gradually decreases away from the tip 34 of the needle and in which the thread is intended to spend.
  • the thread guide has a body 50, substantially in the form of L, crossed obliquely by a channel 51 for the passage of wire F, the lower end 51A of which is flared for allow the wire to be guided, either substantially vertical or substantially horizontal (wire F shown in dashed lines), as will be seen more in detail later.
  • a roller 52 releases the wire F while advancing in the channel 51, and jams it while moving back in the said channel. Indeed, it is the sliding of the wire which, by pulling towards the bottom, roll the roller 52 by opening the channel 51, then that a backward movement (“raising" of the wire) is blocking again the thread.
  • FIG. 6 a second example of embodiment is shown.
  • a stitching head comprising the presser foot assembly 43, thread guide 50 and needle 33 ( Figure 4).
  • a pneumatic cylinder 54 which actuates a plate 55.
  • the flange 53 carries a ball bush 56 for guiding an axis 57.
  • the plate 55 as for it carries a support 58 of the needle 33, a jack auxiliary 59, and a second sliding ball bearing 60 on axis 57.
  • the auxiliary cylinder 59 carries the presser foot 43 and a wire clamp 61 (similar to the wire guide 50) for the wire F, while the guide pin 57 carries the thread guide or wire clamp 50, being stressed by the tension spring 62 and retained by a stop 63.
  • the needle 33 is held on the support 58 using a conical clamp 64 tightened by a nut 65.
  • the descent of the needle 33 is provided by the jack 54 which descends in driving the plate 55 and therefore all the fixed parts on this one.
  • the wire F is held by the wire clamp 61 and the wire guide 50, also playing the role of wire clamp, and forms a loop ( Figure 7A).

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Moulding By Coating Moulds (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Sewing Machines And Sewing (AREA)

Claims (8)

  1. Nadelkopf für eine Maschine zur Herstellung einer Plattenverstärkung für ein Teil aus Verbundmaterial, das aus der in einer ausgehärteten Matrix eingelagerten Verstärkung aus übereinanderliegenden Fadengelegen besteht, durch die ein Verbindungsfaden verläuft, wobei der Nadelkopf eine Halterung mit Mitteln zur Verbindung mit der Maschine und eine Nadel sowie Mittel zur Führung des Verbindungsfadens bis zur Nadel und mechanische Mittel zur Verdichtung (43, 50) der übereinanderliegenden Fadengelege hat, die mit der Nadel (33) verbunden sind, dadurch gekennzeichnet, daß
    dieser eine drehbare Halterung (41,53) hat, an deren unterem Ende die Nadel (33) angebracht ist;
    die mechanischen Verdichtungsmittel einen Nähfuß (43) haben, der mit der Nadel (33) verbunden ist und in Verbindung mit der Nadelbewegung betätigt wird, und
    Mittel (44,59) vorgesehen sind, um eine Relativbewegung des Nähfußes (43) gegenüber der Nadel (33) zu ermöglichen.
  2. Nadelkopf nach Anspruch 1,
    dadurch gekennzeichnet, daß die Nadel (33) hohl ist und daß durch die drehbare Halterung (41) ein Fadenführungskanal (41A) verläuft, der mit der Nadel verbunden ist.
  3. Nadelkopf nach Anspruch 2,
    dadurch gekennzeichnet, daß der Nadelkopf (P) einen Federmechanismus (44) zur Steuerung des Nähfußes (43) mit einer Verbindungsstange (45) hat, die durch eine Druckfeder (44A) nach unten gedrückt und durch einen Anschlag (44B) an der Halterung (40) der Nadel (33) begrenzt wird.
  4. Nadelkopf nach Anspruch 1,
    dadurch gekennzeichnet, daß die Nadel (33) ein durchgehendes schräges Nadelöhr (48) hat und mit einem Fadenführer (50) mit Gehäuse verbunden ist, durch das schräg ein Fadenführungskanal (51) verläuft, dessen unteres Ende (51A) aufgeweitet ist.
  5. Nadelkopf nach Anspruch 4,
    dadurch gekennzeichnet, daß der Nadelkopf (P) einen Mechanismus zur Betätigung der Baugruppe Nähfuß (43), Fadenführer (50) und Nadel (33) hat, der aus einem ersten Zylinder (54) zur Betätigung einer Platine (55), an der die Baugruppe angebracht ist, einer Achse (57) mit dem Fadenführer (50) und einem zweiten Zylinder (59) zur Betätigung des Nähfußes (43) besteht.
  6. Nadelkopf nach Anspruch 5,
    dadurch gekennzeichnet, daß die Nadel (33) an der Platine (55) durch eine Halterung (58) mit Hilfe einer konischen Klemme (64) gehalten wird, die durch eine Mutter (65) festgestellt wird.
  7. Nadelkopf nach Anspruch 5 oder Anspruch 6,
    dadurch gekennzeichnet, daß die Achse (57) mit dem Fadenführer (50) durch eine Zugfeder (62) beaufschlagt und durch einen Anschlag (63) begrenzt wird.
  8. Maschine zur Herstellung einer Plattenverstärkung für ein Teil aus Verbundmaterial,
    dadurch gekennzeichnet, daß sie einen Nadelkopf (P) nach einem der Ansprüche 1 bis 7 hat.
EP95400732A 1994-04-18 1995-04-03 Nadelkopf und Vorrichtung zur Herstellung einer Verstärkungsplatte für einen Teil Verbundmaterial Expired - Lifetime EP0678611B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9404584 1994-04-18
FR9404584A FR2718759B1 (fr) 1994-04-18 1994-04-18 Tête de piquage et machine pour la réalisation d'une armature en forme de plaque pour une pièce de matière composite.

Publications (2)

Publication Number Publication Date
EP0678611A1 EP0678611A1 (de) 1995-10-25
EP0678611B1 true EP0678611B1 (de) 1999-06-30

Family

ID=9462200

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95400732A Expired - Lifetime EP0678611B1 (de) 1994-04-18 1995-04-03 Nadelkopf und Vorrichtung zur Herstellung einer Verstärkungsplatte für einen Teil Verbundmaterial

Country Status (6)

Country Link
US (1) US5515798A (de)
EP (1) EP0678611B1 (de)
JP (1) JP3805810B2 (de)
CA (1) CA2147039C (de)
DE (1) DE69510492T2 (de)
FR (1) FR2718759B1 (de)

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FR2718758B1 (fr) * 1994-04-18 1996-06-14 Aerospatiale Procédé et machine pour la réalisation d'une armature pour une pièce de matière composite.
US6198983B1 (en) 1997-12-22 2001-03-06 Mcdonnell Douglas Corporation Table-driven software architecture for a stitching system
US6128545A (en) * 1997-12-22 2000-10-03 Mcdonnell Douglas Corporation Automated apparatus and method of generating native code for a stitching machine
US5931107A (en) * 1997-12-22 1999-08-03 Mcdonnell Douglas Corporation Advanced stitching head for making stitches in a textile article having variable thickness
US5915317A (en) * 1997-12-22 1999-06-29 Thrash; Patrick J. Automated gantry-type stitching system
US5953231A (en) * 1997-12-22 1999-09-14 Mcdonnell Douglas Corporation Automated quality control for stitching of textile articles
FR2779749B1 (fr) * 1998-06-10 2000-08-11 Aerospatiale Armature fibreuse pour piece de matiere composite, ainsi que procede et dispositif pour sa realisation
US6196145B1 (en) * 1998-11-17 2001-03-06 Albany International Techniweave, Inc. Yarn insertion mechanism
US6467149B2 (en) * 2000-12-07 2002-10-22 The Goodyear Tire & Rubber Company Apparatus for injecting materials into a composite
KR100623706B1 (ko) * 2004-06-18 2006-09-19 (주) 인브로 재봉기계
IL163135A (en) * 2004-07-21 2010-02-17 Yair Eilam Sewing machine for stitching with a composite thread
IL163209A (en) * 2004-07-26 2009-08-03 Yair Eilam A sewing machine needle for sewing with a complex thread
DE102007027758B4 (de) 2007-06-16 2011-02-10 Bruno Peter Verfahren zum Vorkeimen von Saatgut
FR2941710B1 (fr) * 2009-02-05 2011-03-18 Airbus France Procede d'assemblage par couture d'elements fibreux et dispositif pour sa mise en oeuvre.
FR2956416B1 (fr) * 2010-02-18 2012-06-15 Michelin Soc Tech Aiguille pour l'insertion d'un fil dans un pneumatique
US8663770B2 (en) 2011-04-28 2014-03-04 Zin Technologies, Inc. Bonded and stitched composite structure
US9115584B2 (en) 2012-04-24 2015-08-25 General Electric Company Resistive band for turbomachine blade
DE102014014961A1 (de) * 2014-10-14 2016-04-14 Airbus Defence and Space GmbH Vorrichtung sowie Verfahren
CN108035081B (zh) * 2017-10-27 2021-01-15 浙江仙都缝制设备有限公司 一种缝被机机针精确移动装置
CN109137355B (zh) * 2018-01-24 2021-01-01 浙江钧晟新材料科技有限公司 一种交替扎刺式手持电动刺针
CN112226919B (zh) * 2020-10-10 2022-05-20 兰溪市志祥工艺品有限公司 一种具有护针机构的高效型缝纫机

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Also Published As

Publication number Publication date
EP0678611A1 (de) 1995-10-25
US5515798A (en) 1996-05-14
CA2147039C (fr) 2005-06-21
DE69510492D1 (de) 1999-08-05
JPH07300765A (ja) 1995-11-14
DE69510492T2 (de) 1999-11-18
FR2718759A1 (fr) 1995-10-20
FR2718759B1 (fr) 1996-06-14
CA2147039A1 (fr) 1995-10-19
JP3805810B2 (ja) 2006-08-09

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