U.S. patent application number 14/832284 was filed with the patent office on 2015-12-10 for weaving loom with side-by-side frames, weaving method using such a loom and preforms woven thereby.
This patent application is currently assigned to AIRCELLE. The applicant listed for this patent is AIRCELLE. Invention is credited to Julien Bardy, Boris Duchamp, Xavier Legrand.
Application Number | 20150354102 14/832284 |
Document ID | / |
Family ID | 48468539 |
Filed Date | 2015-12-10 |
United States Patent
Application |
20150354102 |
Kind Code |
A1 |
Bardy; Julien ; et
al. |
December 10, 2015 |
WEAVING LOOM WITH SIDE-BY-SIDE FRAMES, WEAVING METHOD USING SUCH A
LOOM AND PREFORMS WOVEN THEREBY
Abstract
The weaving loom of the present disclosure includes a warp
thread supply system, a frame type warp thread sequencing system, a
reed and a weft thread insertion system. The present disclosure
also provides a weaving method using the weaving loom. The method
includes: a step of designing a flat fabric which are multilayered
and presenting several adjacent sections in a weft direction whose
weave and layout are different; a step of designing a set of
side-by-side frames for enabling a weaving of the adjacent sections
in a continuity of a weft according to designed weaves and layouts;
and a step of carrying out the weaving.
Inventors: |
Bardy; Julien; (Beuzeville,
FR) ; Duchamp; Boris; (Lille, FR) ; Legrand;
Xavier; (Roubaix, FR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
AIRCELLE |
Gonfreville L'orcher |
|
FR |
|
|
Assignee: |
AIRCELLE
Gonfreville L'orcher
FR
|
Family ID: |
48468539 |
Appl. No.: |
14/832284 |
Filed: |
August 21, 2015 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
PCT/FR2014/050361 |
Feb 21, 2014 |
|
|
|
14832284 |
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Current U.S.
Class: |
139/56 ; 139/82;
139/91; 139/92 |
Current CPC
Class: |
D10B 2505/02 20130101;
D03C 9/06 20130101; D03C 9/0683 20130101; D03D 13/004 20130101;
D03C 9/065 20130101; D03C 13/025 20130101 |
International
Class: |
D03C 13/00 20060101
D03C013/00; D03C 9/06 20060101 D03C009/06 |
Foreign Application Data
Date |
Code |
Application Number |
Feb 22, 2013 |
FR |
1351594 |
Claims
1. A weaving loom of a kind comprising a wrap yarns supply system,
a wrap yarns sequencing system with frames, a beating reed and a
weft yarn insertion system, wherein the wrap yarns sequencing
system comprises means for driving side-by-side frames.
2. The weaving loom according to claim 1, wherein the wrap yarns
sequencing system comprises parallel sliders in which profiled
edges are engaged facing vertical uprights of facing frames.
3. The weaving loom according to claim 1, further comprising lines
of side-by-side frames, each line of frames in one row being
assigned to a weaving of one section of a fabric according to a
determined weave and/or layout by using at least partially a
continuity of a weft between various sections of the fabric.
4. The weaving loom according to claim 1, wherein the wrap yarns
sequencing system comprises a motorization which is independent,
over time and in amplitude, from a movement of the side-by-side
frames.
5. The weaving loom according to claim 1, wherein the weaving loom
comprises means for realizing singularities in at least one of
woven areas in connection with a line of frames provided for a
weaving of said at least one woven area which includes a weft
insertion system.
6. The weaving loom according to claim 5, wherein the weft
insertion system is of a shuttle type adapted to a layout of a
concerned weaving area.
7. A weaving method using a weaving loom according to claim 1, said
method comprising: a step of designing a flat fabric which are
multilayered and presenting several adjacent sections in a weft
direction whose weave and layout are different; a step of designing
a set of side-by-side frames for enabling a weaving of the adjacent
sections in a continuity of a weft according to designed weaves and
layouts; and a step of carrying out the weaving.
8. The method according to claim 7, wherein the step of designing
each fabric section produces data defining a weave and a layout
thereof used in a subsequent step of designing a line of frames
associated to said fabric section as well as their different
vertical movements which are independent over time and in
amplitude.
9. A preform woven according to the method of claim 7, comprising
several adjacent areas in the weft direction presenting different
weaves and/or layouts and which are made in one single piece.
10. The preform woven according to claim 9, wherein the preform is
used for making in a composite material, a beam of a thrust
reverser for a turbojet engine nacelle, or composite parts.
11. The preform woven according to claim 9, wherein the composite
parts are sheets, beams, guide or carrying rails.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of International
Application No. PCT/FR2014/050361, filed on Feb. 21, 2014, which
claims the benefit of FR 13/51594, filed on Feb. 22, 2013. The
disclosures of the above applications are incorporated herein by
reference.
FIELD
[0002] The present disclosure relates to a weaving loom a weaving
method using a weaving loom, and preforms woven thereby.
BACKGROUND
[0003] The statements in this section merely provide background
information related to the present disclosure and may not
constitute prior art.
[0004] In particular, the present disclosure applies to the
manufacture of parts made of composite materials for aeronautics,
formed of at least one fabric preform taken in polymerized resin,
such parts may be used in particular for realizing turbojet engines
nacelles.
[0005] In order to produce fabric preforms intended for realizing
composites parts such as sheets, beams and profiles such as guide
or carrying rails, it is known to realize several drapes each being
a determined weave, then assemble them by different textile methods
such as stitch or drape in order to assemble them side-by-side
before casting the resin. However, these are complex and
time-consuming operations.
SUMMARY
[0006] The present disclosure provides a weaving loom of the kind
including a wrap yarns supply system, a wrap yarns sequencing
system with frames, a beating reed and a weft yarn insertion
system. The present disclosure also provides the sequencing system
which includes means for driving side-by-side frames.
[0007] According to other features of the present disclosure:
[0008] the sequencing system includes parallel sliders wherein the
profiled edges are engaged facing vertical uprights of the facing
frames;
[0009] the loom includes lines of side-by-side frames, each line of
frames in one row being assigned to the weaving of one section of
the fabric according to a determined weave and/or layout by using
the continuity of the weft between the various fabric sections;
[0010] the sequencing system includes a motorization which is
independent, over time and in amplitude, from the movement of the
side-by-side frames;
[0011] the loom includes means for realizing singularities in at
least one of the woven areas in connection with a line of frames
provided for weaving this area which may include in particular a
weft insertion system, for example of the shuttle-type, adapted to
the layout of the concerned weaving area.
[0012] The present disclosure also concerns a weaving method using
a weaving loom according to the present disclosure. The method
includes: a step of designing a flat fabric which may be
multilayered and presenting several adjacent sections in the weft
direction whose weave and layout are different, then a step of
designing a set of side-by-side frames for enabling the weaving of
the adjacent sections in the continuity of the weft according to
the designed weaves and layouts and a step of carrying out the
weaving.
[0013] According to other features of the method according to the
present disclosure:
[0014] the step of designing each fabric section produces data
defining its weave and its layout which are used in the subsequent
step of designing a line of frames associated to said section as
well as their different vertical movements which are independent
over time and in amplitude.
[0015] The present disclosure also concerns preforms which are
woven according to the method of the present disclosure. They are
made in one single piece.
[0016] According to other features of these preforms, such a woven
preform is used for making in a composite material a beam of a
thrust reverser for a turbojet engine nacelle, composite parts such
as sheets, beams and profiles such as guide or carrying rails.
[0017] Further areas of applicability will become apparent from the
description provided herein. It should be understood that the
description and specific examples are intended for purposes of
illustration only and are not intended to limit the scope of the
present disclosure.
DRAWINGS
[0018] In order that the disclosure may be well understood, there
will now be described various forms thereof, given by way of
example, reference being made to the accompanying drawings, in
which:
[0019] FIG. 1 is a view of a weaving loom according to a known
technique of the state of the art;
[0020] FIG. 2 is an exploded view of one form of a mounting of a
frame used in a weaving loom according to the present
disclosure;
[0021] FIG. 3 represents a wraps sequencing system in a weaving
loom in another form according to the present disclosure; and
[0022] FIG. 4 schematically represents a weaving loom in another
form of the present disclosure.
[0023] The drawings described herein are for illustration purposes
only and are not intended to limit the scope of the present
disclosure in any way.
DETAILED DESCRIPTION
[0024] The following description is merely exemplary in nature and
is not intended to limit the present disclosure, application, or
uses. It should be understood that throughout the drawings,
corresponding reference numerals indicate like or corresponding
parts and features.
[0025] In FIG. 1, there is schematically represented a weaving loom
of the state of the art.
[0026] From the left to the right, the weaving loom includes a wrap
yarns supply system 1, a wrap yarns sequencing system 2 including
heddles carrying eyelets 3, the heddles being movably disposed in
frames placed one behind the other and sequentially driven with
vertical movements, a beating reed 9 and a weft yarn insertion
system 10, for example of the shuttle-type. The fabric that it
being woven 13 is driven by a feed system 14 which applies a
controlled tension on the wrap yarns 8 which come out therefrom and
which come from of the supply system 1.
[0027] The beating reed 9 extends between the wrap yarns 8 at the
outlet of the frames of the sequencing system 2 and each of its
teeth is intended to push the weft yarn 10 against the fabric that
is being woven in a reciprocating forward and backward movement 11,
12.
[0028] Synchronously with the movement of the beating reed, each
weft yarn is passed through an eyelet 3 on a heddle driven by a
frame of the sequencing system 2 in a reciprocating movement with a
determined down 4 and up 6 frequency so that the eyelet 3 that is
disposed at the top of the frame passes into a low position 5 when
a weft yarn 10 is integrated to the fabric. A new return of the
weft yarn 10 is then carried out by the weft insertion system and
the eyelet at the position 5 returns back to the top position 4
through an up movement 6 of the frame that supports it. This
description is given only but as an example of operation. Indeed,
depending on the desired weave, a determined eyelet is not
constrained to move downward or upward after each weft
insertion.
[0029] The wrap yarns are distributed along the direction of the
weft over a series of eyelets carried by the heddles in the frame.
For reasons of complexity of the movements 4, 6 of the wrap yarns,
several frames are placed one behind the other in the direction of
the wrap yarns according to a scheme that allows weaving the fabric
13 according to a determined weave.
[0030] The present disclosure also concerns the wrap yarns
sequencing system 2.
[0031] Indeed, according to the present disclosure, it is desirable
that several weaves or layouts of the fabric may be woven along a
continuous weft. A weave comprises data that define the various
movements of the frames and that select the wrap yarns and/or the
weft yarns in order to constitute the weaving. A fabric layout
comprises data that define its shaping in thickness and/or in
geometry and which also influence the definition of the frames that
are required for the weaving. The continuity of the weft yarn, or
of the various layers of weft yarns in a multilayered fabric, is a
highly desirable feature to the extent that it improves the
cohesion of the final fabric and also because it avoids the
edge-to-edge placing operations of fabrics webs of different weaves
and layouts, which are currently necessary, when it is desired to
obtain a fabric having several different weaves or layouts in the
direction of the weft.
[0032] Such an edge-to-edge placing operation of different webs may
be considered on a Jaquard-type weaving loom wherein each eyelet is
individually driven. However, it will be slower, more expensive and
carried out on a more bulky machine.
[0033] To this end, the present disclosure consists mainly in
disposing side-by-side frames, each one being driven in its own up
and down movement so that it is possible to weave, according to
determined weave and layout, a section of the final fabric in the
direction of the weft having substantially the width of the frame
assigned thereto. Of course, several frames are disposed behind
such a frame and at least some of them are disposed side-by-side
with other frames associated to another section of the fabric in
the direction of the weft.
[0034] The present disclosure lies in that the sequencing system
includes means for driving side-by-side frames. To realize such
means, the present disclosure provides sliders for the uprights of
the side-by-side frames, and a motorization that is independent
over time and in amplitude so that the provided sequencing may be
designed while taking into account the design data of the weave
and/or the layout of each adjacent section of the fabric in the
direction of the weft.
[0035] In FIG. 2, there is represented an exploded view of the
mounting of a frame used in the present disclosure.
[0036] The frame itself is composed of at least one lateral upright
21 to the left and at least one lateral upright 22 to the right
which provide the rigidity of the frame. The lateral uprights 21
and 22 are mounted by their ends on an upper rigid bar 19 and on a
lower rigid bar 20. The frame is completed by an upper heddles
support axis 17 and a lower heddles support axis 18. For
illustration, a heddle with its eyelet 16 is represented mounted
between the upper 17 and lower 18 heddles support axes. A yarn or a
set of yarns 15 is represented inside the eyelet. Of course, a
series of similar heddles and eyelets is disposed next to the
heddle 15 in the opening of the frame 17-22.
[0037] The ends of the uprights 21 and 22 are pierced with tappings
which correspond to bores at the ends of the upper 19 and lower 20
bars for receiving fastening screws which are represented with no
reference numerals. Similarly, the upper 17 and lower 18 axes are
secured to the frame by an end screw, represented with no reference
numerals at each end of the uprights inside the thus formed
frame.
[0038] Note that the leftside 21 and rightside 22 lateral uprights
are profiled so as to be able to integrate in a slider of the wrap
yarns sequencing system on the weaving loom so that, along a common
slider, two frames disposed side-by-side may slide freely along a
same slider. In one form not represented in the drawing, when
mounted in the wrap yarns sequencing system, the slider affects an
X-shaped horizontal section. Each outer profile of a rightside 22
or a leftside 21 upright of the frame according to the present
disclosure affects a profile that enables its sliding inside one of
the branches of the "X" of the section of said slider.
[0039] In FIG. 3, there is schematically represented a portion of a
wrap yarns sequencing system according to the present disclosure in
one form that enables disposing two frames side-by-side.
[0040] The sequencing system of the form includes a framework 25
whose vertical dimension in the drawing is perpendicular to the
weft direction when installed on the weaving loom of the present
disclosure.
[0041] The framework 25 is constructed with uprights and
cross-pieces for its rigidity and it presents in the drawing a
front face and a rear face which are open for passage of the wrap
yarns. The other sides are, if necessary, closed by sheet metals or
a casing in order to protect the operators. Two frames to the left
27 and to the right 28 are represented side-by-side on either side
of a slider (with no reference numerals) and shared by their facing
uprights. Similarly, the leftside uprights of the leftside frame 27
and the rightside uprights of the rightside frame 28 are engaged in
sliders (not visible in the drawing) which are vertical and
parallel to the other sliders secured to the vertical uprights such
as the upright 26 of the framework 25.
[0042] Each frame 27 or 28 is driven by its own vertical cable (not
represented) secured to the upper rigid bar of each frame. Each
cable is driven by its own motor so that the vertical translational
movements 30 and 31 of each frame 27 or 28 in its sliders are fully
autonomous and freely programmable depending on the different
weaves and layouts provided for the section of the woven fabric by
the concerned frame or line of frames. The driving cables (or any
other means for driving or connecting to the motors) not
represented, are driven by motors disposed in the cover 33 above
the framework 25.
[0043] In FIG. 3, there is represented only the first row of one
frame, for the two side-by-sides frames 27, 28. The framework 25 is
designed for receiving a line of side-by-side frames in the
horizontal direction 29 from the front to the back, and which
follow the frames 27 and 28. Of course, the three sliders secured
to the framework 25 and disposed in the plane occupied by the two
side-by-side frames 27 and 28 are repeated in each plane of the
line 29 of side-by-side frames occupying the cabinet.
[0044] The number of frames of one line 29 depends only on the
requirements of the weave and layout of the section of the fabric
produced by the line of frames mounted in the framework 25, and on
those of space constraints.
[0045] In one form, the frames have an effective width of 300
millimeters and their total thickness in the direction 29 does not
exceed eight millimeters and they are constructed from standard
uprights, rigid bars and heddles axes thereby providing cost
savings and easy replacement of the components of the frames.
[0046] In another form, there is constructed a framework of wrap
yarns sequencing system containing in the direction 29, lines of 60
independent frames in the depth direction of the framework 25.
[0047] In FIG. 4, there is represented one form of a weaving loom
according to the present disclosure wherein three lines of frames
are disposed side-by-side so that three sections of the fabric are
woven with different weaves and layouts.
[0048] The sequencing system 40 presents three lines of
side-by-side frames, of which only the first frame of each line to
the left 41, at the center 42 and to the right 43, are disposed.
The shed 44 from the frames 41 to 43 is schematically represented
and the already woven fabric is visible at the front of the
drawing, presenting three sections successively in the direction of
the weft: the Woven Area 1, the Woven Area 2 and the Woven Area
3.
[0049] The mechanical assembly is designed to reduce the space
between two successive wrap yarns present in two side-by-side
frames. This arrangement provides a limited marking between the
sections in the fabric appearance.
[0050] The weaving method according to the present disclosure
consists mainly in designing a flat fabric which may be
multilayered and presenting several adjacent sections in the
direction of the weft whose weaves and layouts are different, then
in designing a set of side-by-side frames for enabling the weaving
of the adjacent sections in the continuity of the weft according to
the designed weaves and layouts, and in carrying out the weaving
using a weaving loom according to the present disclosure.
[0051] In one form, each fabric section is designed in terms of its
weave and layout so that a line of frames associated to said
section is designed and that their different vertical movements are
independent over time and in amplitude.
[0052] In another form, the weaving loom of the present disclosure
includes means for realizing singularities in at least one of the
woven areas in connection with a line of frames provided for the
weaving of this area. In particular, these means for creating
singularities may include a weft insertion system, for example of
the shuttle-type, adapted to the layout of the concerned weaving
area. An example of such the form is represented on the rightmost
woven area in FIG. 4, namely the Woven Area 3, which carries an
aperture or pocket elongated in the direction of the weft.
[0053] The woven preforms according to this method are made in one
single piece. Thus, it is no longer necessary to consider a
post-operation such as draping, assembling and consolidating (such
as tufting, sewing, etc.). Such a woven preform is used for making
in a composite material, a beam of a thrust reverser for a turbojet
engine nacelle.
[0054] Such a preform is also used for making composite parts such
as sheets, beams and profiles such as guide or carrying rails.
* * * * *