EP4551744A1 - Ensemble de tressage modulaire, un procédé de modification de la taille d'une machine de tressage et un procédé de tressage d'une structure tressé - Google Patents
Ensemble de tressage modulaire, un procédé de modification de la taille d'une machine de tressage et un procédé de tressage d'une structure tresséInfo
- Publication number
- EP4551744A1 EP4551744A1 EP23755119.7A EP23755119A EP4551744A1 EP 4551744 A1 EP4551744 A1 EP 4551744A1 EP 23755119 A EP23755119 A EP 23755119A EP 4551744 A1 EP4551744 A1 EP 4551744A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- modules
- braiding
- guide path
- braiding machine
- size
- 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.)
- Pending
Links
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
- D04C3/00—Braiding or lacing machines
- D04C3/02—Braiding or lacing machines with spool carriers guided by track plates or by bobbin heads exclusively
- D04C3/22—Guides or track plates
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
- D04C3/00—Braiding or lacing machines
- D04C3/02—Braiding or lacing machines with spool carriers guided by track plates or by bobbin heads exclusively
- D04C3/36—Frames
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
- D04C3/00—Braiding or lacing machines
- D04C3/40—Braiding or lacing machines for making tubular braids by circulating strand supplies around braiding centre at equal distances
Definitions
- the present invention relates to braiding machines allowing the production of braided structures, and more particularly braided tubular structures.
- a braiding machine conventionally comprises a plate having circuits, called guide paths, which intersect each other and along which yarn supply spindles connected to a drawing point of the machine are moved. These thread supply spindles therefore intersect regularly to create a braid.
- the formation of the braid can be carried out on a form, called a conformation mandrel, which moves during the formation of said braid: we then speak of “over-braiding”.
- the movement of the spindles along the guide paths is conventionally carried out by means of notched wheels driven in rotation and preferably arranged in one or more concentric circles.
- Such braiding machines are for example described in documents FR 2 804 133 and US 8 347 772.
- the present invention aims to remedy the aforementioned drawbacks by proposing a modular braiding assembly capable of adapting to the size of the braided structure to be produced.
- the invention proposes an assembly for the manufacture of braided structures of variable size, comprising:
- a braiding machine having a first size defining a first guide path on which a plurality of wire feed spindles are movable so as to participate in braiding, the first guide path being defined by an assembly of drive modules able to circulate the spindles i supply on the first guide path and first removable spacing modules of the drive modules, a first spacing module being interposed between two consecutive drive modules so as to space them by a first angular spacing, and
- - second spacing modules capable of being removably assembled with all or part of the drive modules by inserting a second spacing module between two consecutive drive modules so as to define a second guide path different from the first guide path on which the wire feed spindles are intended to be mobile in order to participate in braiding and so as to space two consecutive drive modules with a second angular spacing different from the first angular spacing, the assembly of the second spacer modules and drive modules being configured to obtain a braiding machine having a second size different from the first size.
- the proposed assembly makes it possible to produce at least two different sizes of braiding machine adapted to the manufacture of braided structures of different sizes, with a very limited footprint. Indeed, when the size of the braiding machine is no longer suitable, it can be transformed and therefore does not take up space unnecessarily.
- the use of removable spacer modules allows the braiding machine to be easily assembled and disassembled.
- the assembly further comprises a first shaping mandrel associated with the first guide path and a second shaping mandrel associated with the second guide path having a size different from the first shaping mandrel.
- a shaping mandrel makes it easier to braid the structure, the shape of the shaping mandrel providing support on and around which the wires can be braided with the desired section.
- conforming mandrels of variable size are used adapted to the size of the braided structure to be produced.
- a shaping mandrel associated with a guide path designates the shaping mandrel on which the braided wires coming from the mobile spindles rest on the guide path.
- the drive modules comprise an assembly portion on which a notched wheel is mounted, the notched wheels being configured to be driven in rotation in order to circulate the spindles of the invention. feed along the first or second guide path.
- the invention further relates to a method for modifying the size of a braiding machine using the assembly described above, comprising:
- the invention also relates to a method of braiding a braided structure comprising:
- Figure 1 is a schematic perspective view of a first braiding machine.
- Figure 2 is a schematic top view of the braiding machine of Figure 1.
- Figure 3 is a partial schematic representation of the transformation of the first braiding machine of Figures 1 and 2 into a second braiding machine of different size. Description of embodiments
- Figures 1 and 2 schematically illustrate an example of a first braiding machine 1000 having a first size, making it possible to produce braided structures having dimensions adapted to this first size.
- the first braiding machine 1000 comprises a first plate 1 and a plurality of wire feed spindles 3.
- the first plate 1 is preferably horizontal, in order to facilitate its maintenance and that of the wire feed spindles 3. We do not However, it does not fall outside the scope of the invention if the first plate 1 is vertical or inclined.
- the first plate 1 comprises a guide path 100.
- the wire feed spindles 3 movable along this guide path 100 participate in the braiding of the braided structure.
- the guide path 100 is therefore configured to be traveled in a clockwise direction by a first plurality of zones 3, and in an anti-clockwise direction by a second plurality of zones 3.
- the guide path 100 comprises two sub-guide paths 110 and 120 which regularly intersect, the first sub-guide path 110 being configured to be traversed by the first plurality of spindles 3 and the second sub-path 120 being configured to be traversed by the second plurality of spindles 3.
- the first guide path comprises more than two sub-paths, for example if we wish to produce a braided structure comprising several layers or having a complex binding weave, such as interlock braiding.
- Each thread supply spindle 3 carries a spool of braiding threads and comprises a guide support capable of moving along the guide path 100.
- each spool of braiding threads is connected to a system of tension management and thread return.
- the braiding machine 1000 further comprises at least one drawing point located at a distance from the first plate 1, and to which the wires from the bobbins carried by the supply spindles 3 are connected along the guide path 100.
- the first braiding machine 1000 comprises a first conformation mandrel 5, which is a shape on which the intertwined threads come to rest to form the tight braid.
- the braiding machine 1000 makes it possible to carry out so-called “over-braiding” processes.
- the guide path 100 illustrated in Figures 1 and 2 is formed by an assembly of drive modules 30 and first removable spacer modules 10, a first spacer module 10 being interposed between two consecutive drive modules 30 so as to space them by a first angular spacing.
- two consecutive drive modules 30 are separated by a first removable spacer module 10.
- Each first spacer module 10 can be located between two consecutive drive modules 30.
- the drive modules 30 and the first removable spacer modules 10 are arranged alternately along the guide path 100.
- the drive modules 30 include grooves forming portions of the guide path 100. These grooves allow the passage of the guide supports of the feed spindles 3. These grooves are open towards the outside. These grooves have for example a substantially rectangular section open towards the outside. Each drive module 30 may comprise at least one groove forming a portion of the first sub-guide path 110 and at least one groove forming a portion of the second sub-guide path 120, said grooves not crossing.
- Each drive module 30 comprises two opposite assembly edges, intended to allow the assembly of said drive module 30 with the first removable spacer modules 10.
- the assembly edges of the drive modules 30 cooperate with assembly edges of the spacing modules 10, for example by inserting an element projecting from an assembly edge into a housing defined in the facing assembly edge.
- Each drive module 30 also includes a central assembly portion 31 allowing the mounting of a notched wheel 32.
- the notched wheels 32 of the drive modules 30 are configured to be rotated in order to circulate the spindles wire feed 3 along the first path of guidance 100.
- the assembly portion 31 of the drive modules 30 can take the form of a through hole allowing the passage of the axis of the notched wheel 32.
- each notched wheel 32 preferably includes four notches.
- the notched wheels 32 are preferably rotated in a well-known manner via gear trains controlled by one or more motors.
- the drive modules 30 have a rectangular shape, in order to facilitate their assembly and disassembly.
- the first removable spacer modules 10 include grooves forming portions of the guide path 100. These grooves allow the passage of the guide supports of the feed spindles 3. These grooves are open towards the outside. These grooves have for example a substantially rectangular section open towards the outside.
- Each first removable spacer module 10 may comprise at least one groove forming a portion of the first sub-guide path 110 and at least one groove forming a portion of the second sub-guide path 120, said grooves intersecting.
- the grooves of the first spacer modules 10 are configured such that when the spacer modules 10 are mounted with the drive modules 30, the ends of the grooves of the first removable spacer modules 10 forming portions of the guide path 100 open onto the grooves of the adjacent drive modules 30 in order to form a continuous and closed guide path 100.
- the first spacer modules 10 do not include notched wheels.
- At least part of the drive modules 30 and the first removable spacer modules 10 of the braiding machine 1000 extend along a circle Ci of radius Ri around the axis A of the first braiding machine 1000. More precisely, at least part of the assembly portions 31 of the drive modules 30 are distributed over the circle Ci of radius Ri, that is to say the centers of the notched wheels 32 are distributed over the circle Ci of radius Ri.
- the first braiding machine 1000 comprises Ni drive modules 30 and Ni first removable spacer modules 10 distributed over the circle Ci of radius Ri.
- the number of modules and notched wheels represented in Figures 1 and 2 does not correspond to the number of modules and notched wheels represented in Figure 3.
- the assembly portions 31 of two successive drive modules 30 are spaced apart by a fixed distance L, that is to say that the centers of two consecutive notched wheels 32 are spaced apart by a fixed distance L.
- This distance L between two consecutive notched wheels 32 is adapted to the dimension of said notched wheels 32, in order to allow and facilitate the passage of the feed spindles 3 from a drive module 30 to the next drive module 30.
- the centers of two consecutive notched wheels 32 must be sufficiently far apart in order to avoid collision between said two wheels, but must be close enough to allow the passage of the spindles 3 from a drive module 30 to the module d next workout 30.
- the distance between the assembly portion 31 of a drive module 30 and the crossing point of the grooves of a first adjacent spacing module 10 is preferably constant along the first guide path 100, that is to say the distance between the center of a notched wheel 32 of a drive module 30 and the crossing point of the grooves of a first spacing module 10 adjacent to said module d drive 30 is preferably constant along the first guide path 100. Said distance is thus adapted to the dimension of the wheels 32 so as to avoid any collision between the wheels but to allow the passage of the spindles 3 of a module of drive 30 to the next drive module 30.
- the first braiding machine 1000 has a first size and makes it possible to braid braided structures having dimensions adapted to this first size. However, when it is desired to produce braided structures having different dimensions, the first braiding machine 1000 can be adapted in a second braiding machine 2000 having a second size different from the first size.
- the first braiding machine 1000 belongs to an assembly for the manufacture of braided structures of variable size further comprising at least second spacing modules 20.
- the first plate 1 of the first braiding machine 1000 is modified to obtain a second plate 2 corresponding to the second braiding machine 2000 to be obtained.
- the second braiding machine 2000 has a smaller size and number of drive modules 30 than the first braiding machine 1000. This of course does not depart from the scope of the invention if the second braiding machine 2000 has a larger size and number of drive modules 30 than the first braiding machine 1000.
- the second plate 2 of the second braiding machine 2000 comprises a guide path 200.
- the wire feed spindles 3 movable along this guide path 200 participate in the braiding of the braided structure.
- the guide path 200 is therefore configured to be traveled in the clockwise direction by a first plurality of zones 3, and in the counterclockwise direction by a second plurality of zones 3.
- the path guide 200 comprises two guide sub-paths 210 and 220 which regularly intersect, the first guide sub-path 210 being configured to be traversed by the first plurality of spindles 3 and the second sub-path 220 being configured to be traversed by the second plurality of spindles 3.
- the second guide path comprises more than two sub-paths, for example if we wish to produce a braided structure comprising several layers or featuring a complex weave, such as interlock braiding.
- the number of movable spindles 3 on the guide path 200 of the second braiding machine 2000 is different from the number of movable spindles 3 on the guide path 100 of the first braiding machine 1000, in order to adapt to the new dimensions of braided structures to be produced.
- the second braiding machine 2000 further comprises at least one drawing point located at a distance from the second plate 2, and to which the wires from the bobbins carried by the mobile feed spindles 3 are connected along the guide path 200.
- the second braiding machine 1000 comprises a second shaping mandrel having dimensions different from the first shaping mandrel 5 of the first braiding machine 1000, in order to adapt to the new dimensions of braided structures to be produced.
- the guide path 200 is formed by an assembly of drive modules 30 and second removable spacer modules 20, a second spacer module 20 being interposed between two drive modules 30 consecutive so as to space them by a second angular spacing different from the first angular spacing.
- two consecutive drive modules 30 are separated by a second removable spacer module 20.
- Each second spacer module 20 can be located between two consecutive drive modules 30.
- the drive modules 30 and the second removable spacer modules 20 are arranged alternately along the second guide path 200.
- the assembly edges of the drive modules 30 cooperate with assembly edges of the spacing modules 20, for example by inserting an element projecting from an assembly edge into a housing defined in the edge of assembly facing.
- the drive modules 30 of the second braiding machine 2000 are identical to the modules d drive 30 of the first braiding machine 1000.
- the second braiding machine 2000 does not include first spacer modules 10.
- the second removable spacer modules 20 include grooves forming portions of the guide path 200. These grooves allow the passage of the guide supports of the feed spindles 3. These grooves are open towards the outside. These grooves have for example a substantially rectangular section open towards the outside.
- Each second removable spacer module 20 may comprise at least one groove forming a portion of the first sub-guide path 210 and at least one groove forming a portion of the second sub-guide path 220, said grooves intersecting.
- the grooves of the second spacer modules 20 are configured so that when the spacer modules 20 are mounted with the drive modules 30, the ends of the grooves of the second removable spacer modules 20 forming portions of the guide path 200 open onto the grooves of the adjacent drive modules 30 in order to form a continuous and closed guide path 200.
- the second spacer modules 20 do not include notched wheels.
- At least part of the drive modules 30 and the second removable spacer modules 20 of the second braiding machine 2000 extend along a circle C2 of radius R 2 around the axis A of the second braiding machine 2000. More precisely, at least part of the assembly portions 31 of the drive modules 30 are distributed over the circle C 2 of radius R 2 , that is to say that the centers of the notched wheels 32 are distributed over the circle C 2 of radius R 2 .
- the second braiding machine 2000 comprises N 2 drive modules 30 and N 2 second removable spacer modules 20 distributed over the circle C 2 of radius R 2 .
- the number N 2 of drive modules 30 of the second braiding machine 2000 is different from the number Ni of drive modules 30 of the first braiding machine 1000, in order to adapt to the difference in dimensions of the braided structure to achieve.
- the assembly portions 31 of two successive drive modules 30 of the second braiding machine 2000 are spaced at a distance close to the spacing distance L between the assembly portions 31 of two modules of 30 successive drives of the first braiding machine 1000.
- the centers of two consecutive notched wheels 32 of the second braiding machine 2000 can be spaced by a distance of between 90% and 110% of the spacing distance L between the centers of two consecutive notched wheels 32 of the first braiding machine 1000. Consequently, the notched wheels 32 used in the first braiding machine 1000 can be used in the second braiding machine 2000 while ensuring easy guidance of the spindles 3 between the drive modules 30.
- the distance between the assembly portion 31 of a drive module 30 and the crossing point of the grooves of a second adjacent spacing module 20 is preferably constant along the second guide path 200, that is to say the distance between the center of a notched wheel 32 of a drive module 30 and the crossing point of the grooves of a second spacing module 20 adjacent to said module d drive 30 is preferably constant along the second guide path 100.
- Said distance is thus preferably close to the distance between the assembly portion 31 of a drive module 30 and the crossing point of the grooves of a first adjacent spacing module 10, that is to say close to the distance between the center of a notched wheel 32 of a drive module 30 and the crossing point of the grooves of a first module spacer 10 adjacent to said drive module 30.
- the value of the radius R 2 of the circle C 2 over which the N 2 drive modules 30 of the second braiding machine 2000 are distributed can correspond to between 90% and 110% of the value of the previous expression.
- the transformation of the first braiding machine 1000 having a first size into a second braiding machine 2000 having a second size different from the first size is carried out by dismantling the first braiding machine 1000 so as to separate the drive modules 30 and the first spacer modules 10.
- the first spacer modules 10 are set aside.
- all or part of the drive modules 30 are mounted with the second spacing modules 20 so as to define the second guide path 200 and obtain the second braiding machine 2000 of different size.
- Additional drive modules 30 not belonging to the first braiding machine 1000 can be used to produce the second braiding machine 2000 when the latter has a larger size.
- the assembly for the manufacture of braided structures of variable size also includes third spacing modules capable of being removably assembled with all or part of the drive modules 30 by inserting a third spacing module between two consecutive drive modules 30 so as to define a third guide path different from the first and second guide paths 100 and 200 on which the wire feed spindles 3 are mobile in order to participate in braiding, and so as to space two consecutive drive modules 30 with a third angular spacing different from the first and second angular spacings, the assembly of the third spacing modules and the drive modules 30 being configured to obtain a braiding machine having a third size different from the first and second braiding machine sizes.
- the assembly for the manufacture of braided structures of variable size can include other pluralities of spacing modules each allowing the production of braiding machines having a different size.
- bond used in the present application can designate a single thread or a single fiber, but can also designate a wick or a braid.
- the threads may be carbon fibers, ceramic fibers, or a mixture of carbon fibers and ceramic fibers.
- the braided structure according to the method of the invention can be a fibrous structure, which could possibly be consolidated or densified by a matrix in order to form the fibrous reinforcement of a part made of composite material.
- the braided structure according to the process of the invention can thus form, for example, all or part of the fibrous reinforcement of a part made of composite material for the automobile, aeronautics or space industries.
- the braided structure obtained could form, for example, the fibrous reinforcement of a divergent or a rocket engine nozzle.
- the braided structure according to the method of the invention can also allow the formation of straps or ropes.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2206814A FR3137690B1 (fr) | 2022-07-05 | 2022-07-05 | Ensemble de tressage modulaire |
| PCT/FR2023/050989 WO2024009022A1 (fr) | 2022-07-05 | 2023-06-28 | Ensemble de tressage modulaire, un procédé de modification de la taille d'une machine de tressage et un procédé de tressage d'une structure tressé |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4551744A1 true EP4551744A1 (fr) | 2025-05-14 |
Family
ID=83594392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23755119.7A Pending EP4551744A1 (fr) | 2022-07-05 | 2023-06-28 | Ensemble de tressage modulaire, un procédé de modification de la taille d'une machine de tressage et un procédé de tressage d'une structure tressé |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4551744A1 (fr) |
| FR (1) | FR3137690B1 (fr) |
| WO (1) | WO2024009022A1 (fr) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5067525A (en) * | 1988-12-28 | 1991-11-26 | Three-D Composites Research Corporation | Three-dimensional fabric woven by interlacing threads with rotor driven carriers |
| FR2804133B1 (fr) | 2000-01-20 | 2002-04-05 | Inst Textile De France | Machine de tressage perfectionnee |
| US8347772B2 (en) | 2008-01-08 | 2013-01-08 | Triaxial Structures, Inc. | Machine for alternating tubular and flat braid sections and method of using the machine |
| WO2014143917A1 (fr) * | 2013-03-15 | 2014-09-18 | A&P Technology, Inc. | Machine de tressage pouvant être configurée rapidement |
-
2022
- 2022-07-05 FR FR2206814A patent/FR3137690B1/fr active Active
-
2023
- 2023-06-28 EP EP23755119.7A patent/EP4551744A1/fr active Pending
- 2023-06-28 WO PCT/FR2023/050989 patent/WO2024009022A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| FR3137690B1 (fr) | 2024-07-12 |
| WO2024009022A1 (fr) | 2024-01-11 |
| FR3137690A1 (fr) | 2024-01-12 |
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