EP3450605B1 - Führungswerkzeug für rundvernadelungstisch einer textilstruktur, die aus einem ringförmigen faservorformling gebildet wird - Google Patents

Führungswerkzeug für rundvernadelungstisch einer textilstruktur, die aus einem ringförmigen faservorformling gebildet wird Download PDF

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Publication number
EP3450605B1
EP3450605B1 EP18184295.6A EP18184295A EP3450605B1 EP 3450605 B1 EP3450605 B1 EP 3450605B1 EP 18184295 A EP18184295 A EP 18184295A EP 3450605 B1 EP3450605 B1 EP 3450605B1
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EP
European Patent Office
Prior art keywords
guide rail
angular sectors
actuator
inner guide
tooling
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Application number
EP18184295.6A
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English (en)
French (fr)
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EP3450605A1 (de
Inventor
Laurent Dominguez
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.)
Safran Landing Systems SAS
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Safran Landing Systems SAS
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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

Definitions

  • the present invention relates to the general field of circular needling tables for producing needled textile structures from a helical fibrous web.
  • a circular needling table generally comprises a horizontal annular plate on which is laid a helical fibrous sheet, means (usually friction) for rotating the fibrous sheet around the vertical axis of the plate, and a needling device having a needling head extending over an angular sector of the plate and driven in relative vertical movement with respect to the plate.
  • a needling device having a needling head extending over an angular sector of the plate and driven in relative vertical movement with respect to the plate.
  • Document is also known EP 2,339,055 a needling machine in which the needling table comprises a guide tool in the form of two annular walls centered on the vertical axis of the plate and interconnected by lateral reinforcements to ensure a lateral guide of the fibrous web during its rotation about the vertical axis.
  • the present invention therefore has the main object of proposing a tooling guide which does not have the aforementioned drawbacks and which allows to evacuate the needled structure without exerting mechanical stresses.
  • a guide tool for a circular needling table of a textile structure formed from a helical fibrous sheet comprising an inner guide ramp in the shape of a circular arc, and a guide ramp.
  • outer circular arc disposed around the inner guide rail being coaxial therewith and connected thereto by radial reinforcements, the outer and inner guide ramps defining therebetween a passage for guiding the helical fibrous web under a needling head, and wherein, according to the invention, the outer guide ramp is formed of two outer guide ramp angular sectors connected to each other by an outer cylinder, the outer cylinder being able to move away from adjacent free ends of the outer guide ramp angular sectors so as to open the outer guide rail.
  • the guide tooling according to the invention is remarkable in that it is possible to open the outer guide ramp once the structure is completed, which facilitates its extraction out of the guide tooling without exercising mechanical stress on it, and therefore without risk of damaging it.
  • the outer guide ramp is held in closed position by the outer cylinder.
  • the outer cylinder may comprise a cylinder body fixed on a free end of one of the two outer guide ramp angular sectors and a rod fixed on an adjacent free end of the other outer ramp angular sector, the outer cylinder being positioned outside the outer guide ramp extending in a tangential direction thereto.
  • outer guide ramp can open by pivoting the two outer guide ramp angular sectors around opposite free ends of said outer guide ramp angular sectors.
  • the inner guide ramp is formed of two angular sectors of inner guide ramp connected to each other by an inner jack, the inner jack being adapted to bring opposite opposite ends of the angular sectors of the inner guide ramp closer to one another so as to close the inner guide ramp.
  • Closing the inner guide ramp further facilitates the extraction out of the guide tool of the needled structure once it is complete, which further reduces the risk of damaging it.
  • the inner cylinder may comprise a cylinder body fixed on one of the two inner guide ramp angular sectors and a rod fixed on the other inner ramp angular sector, the inner cylinder being positioned inside. of the inner guide ramp extending in a tangential direction thereto.
  • the inner guide ramp can be closed by pivoting the two inner guide ramp angular sectors around adjacent free ends of said inner guide ramp angular sectors.
  • the radial reinforcements may be integral with a plate positioned above the inner and outer guide ramps.
  • the plate advantageously comprises a deflector for guiding the helical fibrous web from a feed table to the passage defined by the outer and inner guide ramps.
  • the invention also relates to a circular needling table of a textile structure formed from a helical fibrous web comprising a guide tool as defined above.
  • the figure 1 illustrates a circular needling machine 2 which is intended for the needling of a textile structure, or annular preform formed from a fibrous web (or band) helical.
  • this needling machine 2 comprises a feed table 4 fibrillated needle sheet disposed above a needling table 6.
  • the feed table 4 made of a fibrillated fibrous web may comprise a circular conveyor 8 which is centered on a vertical axis 10 and on which is disposed a fibrous web 12 to needling.
  • the fibrous web may be more precisely wound in several revolutions around the vertical axis 10 and be rotated about this axis by the circular conveyor 8.
  • the feed table 4 opens under the circular conveyor 8 to a right chute 14 which extends vertically between the circular conveyor and the needling table 6.
  • the function of this chute is to take up the web 12 which is unwound from the conveyor and to guide it vertically towards the needling table.
  • the fibrous web is brought onto a support plate 16 of the needling table 6 and is rotated about the vertical axis 10 in the same direction of rotation as the circular conveyor to pass under a needling head 18, this the last being animated by a vertical reciprocating movement by conventional means of displacement 19.
  • means for rotating the fibrous web may comprise a plurality of pairs of rollers 20 which are angularly spaced from one another.
  • Each pair of rollers 20 typically consists of a conical roll 20a forming a pressure roller in continuous contact with the fibrous web and a conical counter-roller 20b disposed in an opening of the support plate of the needling table opposite the roller. presser 20a so as to sandwich the fibrous web.
  • the support plate 16 is perforated so that the counter-rollers come into direct contact with the fibrous web deposited on this plate.
  • the needling table 6 also comprises a guide tool 22 which rests on the support plate 16. This guide tool ensures a guiding of the fibrous web during its needling.
  • the guide tooling 22 comprises an inner guide ramp 24 in the shape of a circular arc centered on the vertical axis 10, and an outer circular guide ramp 26 in the shape of an arc disposed around the guide ramp inside being coaxial.
  • the inner and outer guide ramps are connected to one another by radial reinforcements 28 and define between them a passage for guiding the helical fibrous web under the needling head of the needling table.
  • the radial reinforcements 28 are integral with a plate 29 positioned above the inner and outer guide ramps.
  • the outer guide ramp 26 is formed of two angular sectors of outer guide ramp 26a, 26b which are connected to one another by an outer cylinder 28 positioned outside the ramp of external guidance extending in a tangential direction thereto.
  • This external jack 28 is able to move the adjacent free ends 26a-1, 26b-1 of the two outer guide ramp angular sectors 26a, 26b away from one another so as to open the outer guide ramp.
  • the outer cylinder 28 comprises a cylinder body 30 which is fixed on a free end 26a-1 of one of the two outer guide ramp angular sectors (namely the outer guide ramp sector 26a on the outer guide ramps 26a-1). Figures 2 and 3 ) and a rod 32 which is fixed on an adjacent free end 26b-1 of the other outside ramp angular sector 26b.
  • the opening of the outer guide ramp thus makes it possible to facilitate the extraction of the fibrous needled structure once it has been completed outside the guide tooling 22 without exerting any mechanical stress on it, and therefore without risk of damaging it.
  • the inner guide ramp 24 is also formed of two inner guide ramp angular sectors 24a, 24b which are connected to each other by an inner cylinder 36 positioned inside the inner guide ramp extending in a tangential direction thereto.
  • This inner jack 36 is able to move the opposite free ends 24a-2, 24b-2 of the two inner guide ramp angular sectors 24a-24b close to one another so as to close the inner guide ramp.
  • the inner cylinder 36 comprises a cylinder body 38 which is fixed on one of the two inner guide ramp angular sectors (namely the inner guide rail sector 24a on the inner guide ramps). Figures 2 and 3 ) and a rod 40 which is fixed on the other angular sector of inner guide ramp 24b.
  • the inner cylinder when the inner cylinder is actuated, its rod 40 enters the cylinder body 38 so as to bring the opposite free ends 24a-2, 24b-2 of the angular sectors of the inner guide ramp to one another. way to close the inner guide rail.
  • the adjacent free ends 24a-1, 24b-1 of the inner guide ramp angular sectors they each pivot about a respective fixed pivot 42a, 42b.
  • the closure of the inner guide ramp 24 also facilitates the extraction of the fibrous structure needled after it completed out of the guide tool without exerting mechanical stress on it, and therefore without risk of 'to damage.
  • By opening the outer diameter and closing the inner diameter of the guide tool the extraction of the needled fibrous structure is considerably facilitated.
  • the plate 29 which is integral with the radial reinforcements 28 of the guide tool 22 comprises a deflector 44 which is intended to guide the fibrous web from the exit of chute 14 ( figure 1 ) to the passage defined by the outer and inner guide rails of the guide plate.
  • the needling table further comprises a conical roller 46 which is disposed at the outlet of the chute 14 at the deflector 44. This roller is more precisely positioned just above the fibrous web when it comes out of the chute so as to lead the fibrous web before passing under the needling head.
  • the support plate 16 on which the guide tool 22 is based is vertically movable under the action of motion transmission means 48 as the needling operation proceeds.
  • inner and outer cylinders used to open the outer diameter and close the inner diameter of the guide plate can be all types of actuators (pneumatic, electric, hydraulic, mechanical, manual, etc.).

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)

Claims (9)

  1. Führungswerkzeug (22) für einen Tisch zur Rundnadelung (6) einer Textilstruktur, die aus einer schraubenförmigen Faserbahn (12) gebildet ist, umfassend:
    eine kreisbogenförmige innere Führungsrampe (24) und
    eine kreisbogenförmige äußere Führungsrampe (26), die um die innere Führungsrampe herum angeordnet und dabei zu dieser koaxial verläuft und mit letzterer durch radiale Verstärkungen (28) verbunden ist, wobei die äußere und die innere Führungsrampe zwischen sich einen Durchgang zum Führen der schraubenförmigen Faserbahn unter einem Nadelungskopf definieren,
    dadurch gekennzeichnet, dass die äußere Führungsrampe (26) von zwei äußere Führungsrampe-Winkelsektoren (26a, 26b) gebildet ist, die durch einen äußeren Zylinder (28) miteinander verbunden sind, wobei der äußere Zylinder geeignet ist, benachbarte freie Enden (26a-1, 26b-1) der Winkelsektoren der äußeren Führungsrampe voneinander zu entfernen, um die äußere Führungsrampe zu öffnen.
  2. Werkzeug nach Anspruch 1, bei dem der äußere Zylinder (28) einen Zylinderkörper (30), der an einem freien Ende von einem der beiden Winkelsektoren der äußeren Führungsrampe befestigt ist, sowie eine Stange (32) umfasst, die an einem benachbarten freien Ende des anderen Winkelsektors der äußeren Rampe befestigt ist, wobei der äußere Zylinder außerhalb der äußeren Führungsrampe sich in einer tangentialen Richtung zu dieser erstreckend angeordnet ist.
  3. Werkzeug nach einem der Ansprüche 1 und 2, bei dem die äußere Führungsrampe (26) sich durch Verschwenken der beiden Winkelsektoren der äußeren Führungsrampe um gegenüberliegende freie Enden (26a-2, 26b-2) der Winkelsektoren der äußeren Führungsrampe öffnet.
  4. Werkzeug nach einem der Ansprüche 1 bis 3, bei dem die innere Führungsrampe (24) von zwei innere Führungsrampe-Winkelsektoren (24a, 24b) gebildet ist, die durch einen inneren Zylinder (36) miteinander verbunden sind, wobei der innere Zylinder geeignet ist, gegenüberliegende freie Enden (24a-2, 24b-2) der Winkelsektoren der inneren Führungsrampe einander zu nähern, um die innere Führungsrampe zu schließen.
  5. Werkzeug nach Anspruch 4, bei dem der innere Zylinder (36) einen Zylinderkörper (38), der an einem der beiden Winkelsektoren der inneren Führungsrampe befestigt ist, sowie eine Stange (40) umfasst, die an dem anderen Winkelsektor der inneren Rampe befestigt ist, wobei der innere Zylinder innerhalb der inneren Führungsrampe sich in einer tangentialen Richtung zu dieser erstreckend angeordnet ist.
  6. Werkzeug nach einem der Ansprüche 4 und 5, bei dem die innere Führungsrampe (24) sich durch Verschwenken der beiden Winkelsektoren der inneren Führungsrampe um benachbarte freie Enden (24a-1, 24b-1) der Winkelsektoren der inneren Führungsrampe schließt.
  7. Werkzeug nach einem der Ansprüche 1 bis 6, bei dem die radialen Verstärkungen (28) mit einer Platte (29), die oberhalb der inneren und der äußeren Führungsrampe angeordnet ist, fest verbunden sind.
  8. Werkzeug nach Anspruch 7, bei dem die Platte ein Leitblech (44) aufweist, das dazu bestimmt ist, die schraubenförmige Faserbahn von einem Zuführtisch (4) in Richtung des Durchgangs, welcher durch die äußere und die innere Führungsrampe definiert ist, zu führen.
  9. Tisch zur Rundnadelung (6) einer Textilstruktur, die aus einer schraubenförmigen Faserbahn gebildet ist, umfassend ein Führungswerkzeug (22) nach einem der Ansprüche 1 bis 8.
EP18184295.6A 2017-09-01 2018-07-18 Führungswerkzeug für rundvernadelungstisch einer textilstruktur, die aus einem ringförmigen faservorformling gebildet wird Active EP3450605B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1758084A FR3070695B1 (fr) 2017-09-01 2017-09-01 Outillage de guidage pour table d'aiguilletage circulaire d'une structure textile formee a partir d'une nappe fibreuse helicoidale

Publications (2)

Publication Number Publication Date
EP3450605A1 EP3450605A1 (de) 2019-03-06
EP3450605B1 true EP3450605B1 (de) 2019-10-09

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EP18184295.6A Active EP3450605B1 (de) 2017-09-01 2018-07-18 Führungswerkzeug für rundvernadelungstisch einer textilstruktur, die aus einem ringförmigen faservorformling gebildet wird

Country Status (4)

Country Link
US (1) US10781543B2 (de)
EP (1) EP3450605B1 (de)
FR (1) FR3070695B1 (de)
MY (1) MY196049A (de)

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US189353A (en) * 1877-04-10 Improvement in circular looms
US17353A (en) * 1857-05-19 Nathaniel b
US1822292A (en) * 1927-02-16 1931-09-08 Leon Jaloustre Circular loom for weaving
US3105523A (en) * 1960-04-28 1963-10-01 Borrell Joaquin Capellas Circular loom for weaving a number of separate fabrics simultaneously
US4642924A (en) * 1984-01-10 1987-02-17 Blue Bell, Inc. Embroidery hoop
US5409044A (en) * 1994-02-25 1995-04-25 Lin; Yao-Chang Circular loom having improved shuttle retention
FR2824084B1 (fr) * 2001-04-30 2003-08-01 Messier Bugatti Alimentation aiguilleteuse par bande spirale continue
US6760985B2 (en) * 2002-09-03 2004-07-13 David A. Wilson Craft hoop clamping method and apparatus
FR2869330B1 (fr) * 2004-04-23 2006-07-21 Messier Bugatti Sa Procede de fabrication de nappe fibreuse bidimensionnelle helicoidale
FR2892428B1 (fr) * 2005-10-24 2008-02-08 Messier Bugatti Sa Fabrication de structures annulaires fibreuses tridimensionnelles
FR2954357B1 (fr) 2009-12-22 2012-03-23 Messier Bugatti Machine d'aiguilletage circulaire a alimentation en nappe fibreuse par un convoyeur et une goulotte verticale
FR2954358B1 (fr) * 2009-12-23 2012-01-13 Messier Bugatti Table d'aiguilletage circulaire d'une structure textile formee a partir d'une preforme fibreuse annulaire
FR3007043B1 (fr) * 2013-06-13 2015-07-03 Messier Bugatti Dowty Dispositif d'entrainement par aiguilles d'une nappe fibreuse helicoidale a aiguilleter
US9340913B1 (en) * 2014-01-17 2016-05-17 Mansukhlal K. Gala Devices for holding fabrics during embroidering
US9719199B2 (en) 2014-05-23 2017-08-01 Goodrich Corporation System and method for transport of fibers to/from a circular needle-punching loom

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
FR3070695B1 (fr) 2019-09-13
US10781543B2 (en) 2020-09-22
MY196049A (en) 2023-03-09
EP3450605A1 (de) 2019-03-06
US20190071805A1 (en) 2019-03-07
FR3070695A1 (fr) 2019-03-08

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