EP1507907A1 - Procede et installation pour la fabrication de preformes fibreuses annulaires - Google Patents
Procede et installation pour la fabrication de preformes fibreuses annulairesInfo
- Publication number
- EP1507907A1 EP1507907A1 EP03755182A EP03755182A EP1507907A1 EP 1507907 A1 EP1507907 A1 EP 1507907A1 EP 03755182 A EP03755182 A EP 03755182A EP 03755182 A EP03755182 A EP 03755182A EP 1507907 A1 EP1507907 A1 EP 1507907A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cone
- fibers
- plate
- zone
- wall
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 29
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 239000000835 fiber Substances 0.000 claims abstract description 90
- 230000008021 deposition Effects 0.000 claims abstract description 19
- 238000012423 maintenance Methods 0.000 claims abstract description 4
- 238000000151 deposition Methods 0.000 claims description 28
- 238000009434 installation Methods 0.000 claims description 13
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000005192 partition Methods 0.000 abstract 3
- 239000002131 composite material Substances 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 7
- 239000004744 fabric Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 244000144992 flock Species 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000007833 carbon precursor Substances 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920002239 polyacrylonitrile Polymers 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
-
- 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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4209—Inorganic fibres
- D04H1/4242—Carbon fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B11/00—Making preforms
- B29B11/14—Making preforms characterised by structure or composition
- B29B11/16—Making preforms characterised by structure or composition comprising fillers or reinforcement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/12—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat
- B29C70/14—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat oriented
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
- B29C70/24—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in at least three directions forming a three dimensional structure
-
- 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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
-
- 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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
-
- 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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/498—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres entanglement of layered webs
-
- 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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/732—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay
-
- 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
- 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
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
-
- 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
- D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
- D04H3/07—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments otherwise than in a plane, e.g. in a tubular way
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
- F16D69/023—Composite materials containing carbon and carbon fibres or fibres made of carbonizable material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/748—Machines or parts thereof not otherwise provided for
- B29L2031/7482—Brakes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D2069/005—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces having a layered structure
- F16D2069/008—Layers of fibrous materials
Definitions
- the invention relates to the manufacture of annular fiber preforms, in particular porous preforms intended to constitute the reinforcement of annular parts of composite material obtained by densification of the preforms by a matrix.
- a particular field of application of the invention is the production of fibrous preforms for annular friction parts made of composite material such as clutch discs or brake discs made of thermostructural composite material.
- Such discs include a fibrous reinforcement, generally made of carbon fibers, densified by a carbon and / or ceramic matrix.
- a commonly used method for producing a fibrous reinforcement for a disc made of composite material, in particular for a brake disc made of carbon / carbon composite material (C / C), consists in making an annular preform by stacking layers of a two-dimensional fibrous texture.
- Two-dimensional fibrous textures which can be used are fabrics, unidirectional sheets of fibers, multidirectional sheets made up of several unidirectional sheets superimposed in different directions and linked together, for example by needling, layers of felt or complex textures comprising a formed layer by a fabric or a sheet on which a layer of felt or free fibers has been fixed, for example by needling.
- the strata can be superimposed flat, while being linked to each other by needling, in order to constitute a plate in which annular preforms are cut, as described for example in US Patents 4,790,052 and US 5,792,715.
- This process is commonly and satisfactorily used to make preforms of brake discs of composite material C / C, but causes a significant drop of material when cutting the preforms.
- Another known method described in document EP 0 424 988, consists in cutting ring sectors in two-dimensional layers and in forming an annular preform by superposition and needling of rings formed by juxtaposition of sectors. This process makes it possible to reduce material waste, but without eliminating it and at the cost of a more delicate production of the preforms.
- the object of the invention is to provide a method for manufacturing annular fiber preforms in a particularly simple and economical manner.
- the fibers are brought to the external surface of the perforated wall of the cone on a part of this surface which extends between two generatrices of the cone, over a length, measured along a generatrix, substantially equal to the width of the annular preform to be produced.
- the meridian planes passing through said two generators form between them an angle preferably of between 10 ° and 40 °.
- the fibers are brought to the external surface of the perforated wall of the cone by passing through a feed channel.
- the fibers are compressed after deposition on the tray.
- the fibers can be deposited on the tray in several superimposed layers. In this case, preferably, the distance between the plate and the cone is gradually increased as and when successive layers of fibers are deposited.
- the fibers deposited on the plate are linked together to form a manipulable fibrous preform.
- the fibers can be bonded together by needling.
- the object of the invention is also to provide an installation making it possible to implement the method defined above.
- a rotating support plate - a rotating feed cone around its axis, having an outer wall of conical shape surrounding a chamber and pierced with multiple perforations, the cone being arranged above the plate with a generator extending in the vicinity of the outer surface of the plateau and substantially parallel thereto, in a zone for depositing the fibers on the plateau;
- the fiber supply means can be formed by a fiber supply channel which extends between a breaker device and the feed zone of the cone. At least in its part adjacent to the cone, the feed channel advantageously has a trapezoidal section.
- at least one conical compression roller is disposed above the support plate, downstream of the zone for depositing the fibers on the plate.
- a needling device is disposed above the support plate, downstream of the zone for depositing the fibers on the plate.
- the distance between the support plate and the feed cone can be variable.
- FIG. 1 shows the successive steps of an embodiment of a method according to the invention
- FIG. 2 is a very schematic perspective view of an embodiment of an installation according to the invention
- Figure 3 is a partial side elevational view of the installation of Figure 2;
- Figure 4 is a longitudinal sectional view showing, on an enlarged scale, the supply cone of the installation of Figures 2 and 3;
- FIG. 5 is a sectional view along the plane VV of Figure 3. Detailed description of an embodiment of the invention
- the invention is not however limited to this application and can be used for the production of all annular fibrous textures.
- the fibers intended for the production of a preform are staple fibers, for example in the form of flock or felt (step 1 of the method in FIG. 1).
- the fibers are made of carbon or of carbon precursor, for example of preoxidized polyacrylonitrile (PAN).
- the felts or flocks 10 are deposited in layer on a conveyor 12 which brings them to a breaker device 20.
- the breaker device 20 comprises two metal breaker rollers 22, 24 arranged parallel to the one to the other and in the immediate vicinity of each other.
- the rollers 22, 24 are rotated in opposite directions at relatively high speed (several thousand revolutions / minute). Thanks to the multiple reliefs in the form of points or claws formed on their peripheral surface, the rollers 22, 24 carry out a dissociation of the fibers from the felts or flocks which are brought by the conveyor 10 above the interval between the rollers (step 2 of the process).
- the dissociated fibers are in the form of free fibers. These are projected out of the breaker device thanks to the kinetic energy imparted by contact with the rollers and by the air entrained by the rollers.
- the dissociated fibers enter a channel 30 which extends between the outlet of the breaker device 20 and the external surface of the wall of a rotary cone 40 (step 3 of the method).
- the channel 30 (FIGS. 2, 3 and 5) ends with a part 32 in the form of a nozzle which can be produced in one piece with the rest of the channel or be formed by a separate piece connected to the rest of the channel.
- the nozzle 32 has a substantially trapezoidal section and ends with an opening 34 defining a zone for feeding the cone 40 with fibers.
- the cone 40 is hollow and its peripheral wall 42 is provided with a multitude of perforations 44 at least in a frustoconical part 42a extending between two transverse planes.
- the nozzle 32 opens through the opening 34 near the frustoconical perforated part 42a, the zone for feeding the fiber cone being delimited by the shape of the opening 34 and extending between two generators of the cone and between two planes transverse over a distance L measured along a generatrix of the cone.
- the cone 40 which is described below in detail with reference to Figures 4 and 5, has an internal chamber 46 surrounded by the frustoconical wall 42a. By vacuum established in the chamber 46, the fibers brought into the cone feed zone are pressed against the outer surface of the frustoconical part 42a. The cone 40 is driven in rotation about its axis, so that the fibers held by suction on its surface are transported to a deposition zone on a support plate 70 in the form of a disc or crown (step 4 of the method ).
- the plate 70 is driven in rotation about its vertical axis 72 connected to a drive motor (not shown).
- the cone 40 has a horizontal generator which extends above and near the upper surface of the plate 70. The maintenance of the fibers on the cone 40 by vacuum is interrupted in the deposition zone, so that the fibers transported by the cone 40 is deposited on the crown 70 (step 5 of the method).
- the fibers 10 are compacted by means of at least one cone 88 exerting a compressive force (step 6 of the method).
- the cone 88 can be mounted to rotate freely about its axis and exert a fiber compaction force by adjusting its distance between its lower horizontal generatrix and the upper surface of the plate 70.
- the compacted fibers are bonded together and with fibers previously placed on the pan. In the illustrated embodiment, this connection is made by needling in a needling station 80 located downstream of the compacting cone or cones, in the direction of rotation of the plate (step 7 of the method).
- the needling station 80 comprises a needling head 82 provided with a plurality of needles 84 extending uniformly at least over the entire width of the preform.
- a drive system 86 of the connecting rod-crank type gives the needling head an alternating vertical movement.
- the breaker rollers 22, 24 are fed with fibers F continuously, while the cone 40 and the plate 70 are driven in rotation continuously.
- a fibrous preform 74 (shown only in FIG. 3) can be gradually produced on the plate 70 by depositing free fibers in several superposed layers and bonding the fibers together by needling.
- the feed rate of breaker rollers and the rotational speeds of the cone 40 and the plate 70 determine the thickness of the successive layers of free fibers deposited on the plate.
- the distance between the plate 70 and the lower horizontal generator of the cone 40 is gradually increased as and when successive layers of fibers are deposited, so that this generator is located at or slightly above the upper face of the plate 70 (at the start of the process) and then at or slightly above the upper surface of the preform in progress.
- the plate 70 and its rotational drive means are vertically movable (arrow F in Figure 3).
- the support plate 70 can be coated with a layer 76 forming base felt, for example made of polypropylene fibers, into which the needles can penetrate without being damaged during the needling of first layers of fibers. free deposited on the plate 70.
- a film 78 for example of polyethylene, can be placed above the base felt 76 to avoid too strong a connection between the annular fibrous texture and the base felt under the effect of needling.
- the distance L at the level of the cone feeding zone 40 is chosen to correspond to the width of the annular preform to be produced.
- the two meridian planes make between them a preferred angle between 10 ° and 40 °. Thanks to its trapezoidal section, the nozzle 32 allows a deposit of constant thickness over the entire width of the deposit zone on the support plate 70.
- the fibers from the breaker rollers 22, 24 being sprayed in a substantially homogeneous manner throughout the section of the nozzle 30, the density of the fibers deposited on the plate 70 is substantially uniform.
- the external wall 42 of the cone comprises a part 42b secured to a ring 48 and the part 42a provided with perforations 44, the part 42a being situated for example on the side of the end 40a of the cone of smaller diameter.
- the ring 48 has a frustoconical outer surface in contact with the inner surface of the part 42b of the wall 42 and forms a bearing for mounting the cone 40 on a non-rotating axis 50.
- Bearings 52, 54 are interposed between the ring 48 and the axis 50 while the ring 48 is integral with a pulley 56 over which passes a belt 58 connected to a motor (not shown) for driving the cone 40 in rotation around its axis.
- the space between the ring 48 and the closed end 40a of the cone 40 forms the chamber 46.
- the latter communicates with a suction device (not shown) through an axial passage 50a of the axis 50.
- Seals d sealing such as 60, 62 are interposed between, on the one hand, the axis 50 and, on the other hand, the ring 48 and the pulley 52.
- the axis 50 has an end 50b which projects into the chamber 46 and on which is fixed a fixed screen 64 (shown in Figure 5).
- the screen 64 comprises a solid wall 66 in the form of a cone sector which extends in the immediate vicinity of the internal surface of the perforated part 42a of the wall 42.
- the wall 66 interrupts the suction effect or of depression through the perforations 44 which come opposite the wall 66 during the rotation of the cone 40, which releases by gravity the fibers retained by suction during their transport on the cone.
- the screen 62 is mounted so as to release the fibers so that they are deposited on the plate 70 in the deposition zone.
- the wall 66 extends between two meridian planes 66a, 66b.
- the plane 66a located upstream (in the direction of rotation of the cone 40) is located at or even slightly upstream from the meridian plane P containing the lower horizontal generatrix of the cone 40.
- the plane 66b is located downstream from the plane P, its position which can even go as far as the entrance to the fiber cone feeding zone so that the cone surface is not cluttered with fibers when it enters the fiber cone feeding zone.
- the angle between the planes 66a and 66b can reach 180 °, while being able to take a lower value.
- the screen 66 is integral with an arm 68 fixed on the end 50a of the axis 50.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- General Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0206262 | 2002-05-23 | ||
FR0206262A FR2839985B1 (fr) | 2002-05-23 | 2002-05-23 | Procede et installation pour la fabrication de preformes fibreuses annulaires |
PCT/FR2003/001547 WO2003100148A1 (fr) | 2002-05-23 | 2003-05-22 | Procede et installation pour la fabrication de preformes fibreuses annulaires |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1507907A1 true EP1507907A1 (fr) | 2005-02-23 |
Family
ID=29415001
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03755182A Withdrawn EP1507907A1 (fr) | 2002-05-23 | 2003-05-22 | Procede et installation pour la fabrication de preformes fibreuses annulaires |
Country Status (14)
Country | Link |
---|---|
US (1) | US7404921B2 (fr) |
EP (1) | EP1507907A1 (fr) |
JP (1) | JP4299237B2 (fr) |
KR (1) | KR20050007417A (fr) |
CN (1) | CN100381626C (fr) |
AU (1) | AU2003249414B9 (fr) |
BR (1) | BR0304663A (fr) |
CA (1) | CA2486608A1 (fr) |
FR (1) | FR2839985B1 (fr) |
IL (1) | IL165098A (fr) |
MX (1) | MXPA04011626A (fr) |
RU (1) | RU2309209C2 (fr) |
UA (1) | UA77793C2 (fr) |
WO (1) | WO2003100148A1 (fr) |
Families Citing this family (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2869330B1 (fr) * | 2004-04-23 | 2006-07-21 | Messier Bugatti Sa | Procede de fabrication de nappe fibreuse bidimensionnelle helicoidale |
US20060177663A1 (en) * | 2005-02-08 | 2006-08-10 | Honeywell International Inc. | Carbon-carbon composite article manufactured with needled fibers |
GB0514141D0 (en) * | 2005-07-09 | 2005-08-17 | P G Lawton Ind Services Ltd | Production of shaped filamentary structures |
FR2892428B1 (fr) | 2005-10-24 | 2008-02-08 | Messier Bugatti Sa | Fabrication de structures annulaires fibreuses tridimensionnelles |
FR2900420B1 (fr) * | 2006-04-26 | 2008-07-25 | Snecma Propulsion Solide Sa | Procede de realisation de strate fibreuse pour la fabrication d'une preforme de piece composite |
FR2912680B1 (fr) * | 2007-02-21 | 2009-04-24 | Coriolis Composites Sa | Procede et dispositif de fabrication de pieces en materiau composite, en particulier de troncons de fuselage d'avion |
FR2912953B1 (fr) * | 2007-02-28 | 2009-04-17 | Coriolis Composites Sa | Machine d'application de fibres avec tubes flexibles d'acheminement de fibres |
DE102007012609B4 (de) * | 2007-03-13 | 2010-05-12 | Eads Deutschland Gmbh | Legevorrichtung und Legestempel zur Verwendung in einer Legevorrichtung |
GB2454704B (en) * | 2007-11-16 | 2012-05-02 | Richard Allen | A method of manufacturing a fibrous structure and an apparatus therefor |
DE102008003974B4 (de) * | 2008-01-11 | 2013-08-01 | Airbus Operations Gmbh | Verfahren zur Herstellung (teil-)ringförmiger, faserverstärkten Kunststoff enthaltende Bauteile aus FVW-Halbzeugen |
FR2953826B1 (fr) * | 2009-12-16 | 2019-10-11 | Safran Landing Systems | Procede de fabrication d'une piece de friction a base de materiau composite c/c |
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FR3007043B1 (fr) | 2013-06-13 | 2015-07-03 | Messier Bugatti Dowty | Dispositif d'entrainement par aiguilles d'une nappe fibreuse helicoidale a aiguilleter |
FR3007428B1 (fr) * | 2013-06-20 | 2015-10-16 | Messier Bugatti Dowty | Table et procede d'aiguilletage d'une structure textile formee a partir d'une preforme fibreuse annulaire avec decalage radial de la tete d'aiguilletage |
US9783917B2 (en) * | 2014-06-09 | 2017-10-10 | Goodrich Corporation | System and method for air entanglement |
US9309613B1 (en) * | 2014-11-03 | 2016-04-12 | Goodrich Corporation | System and method to fabricate helical fabric |
US9644296B2 (en) | 2014-11-03 | 2017-05-09 | Goodrich Corporation | System and method for manufacturing net shape preform from textile strips |
DE102014018933A1 (de) * | 2014-12-22 | 2016-06-23 | Airbus Defence and Space GmbH | Vorrichtung zur Konsolidierung einer Preform |
JP6443288B2 (ja) * | 2015-10-02 | 2018-12-26 | 株式会社豊田自動織機 | 繊維強化複合材用の繊維構造体、繊維強化複合材用の繊維構造体の製造方法、及び繊維強化複合材 |
US10208412B2 (en) * | 2016-06-16 | 2019-02-19 | Goodrich Corporation | Systems and methods for forming a composite structure |
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CN107558001B (zh) * | 2017-10-24 | 2020-08-21 | 武汉纺织大学 | 一种降低聚酰亚胺纤维毡针刺密度的方法 |
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CN110306294A (zh) * | 2019-07-10 | 2019-10-08 | 宜兴市宜泰碳纤维织造有限公司 | 一种应用于碳纤维坩埚制备的针刺机 |
CN110370686B (zh) * | 2019-08-13 | 2021-03-12 | 核工业第八研究所 | 一种双复合材料增强环制作工艺 |
CN111173818B (zh) * | 2020-01-16 | 2020-11-20 | 西北工业大学 | 一种自动进料多功能可弹升齿环摩擦片贴附机构 |
CN113500738A (zh) * | 2021-08-31 | 2021-10-15 | 江苏德晴新材股份有限公司 | 一种用于加工r弧胚体的工艺 |
CN115262095B (zh) * | 2022-06-30 | 2024-09-13 | 南京玻璃纤维研究设计院有限公司 | 一种网胎套的成型装置和方法 |
KR102554583B1 (ko) * | 2022-10-04 | 2023-07-11 | 이재형 | 커피필터 사출성형기의 필터체 공급장치 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4790052A (en) * | 1983-12-28 | 1988-12-13 | Societe Europeenne De Propulsion | Process for manufacturing homogeneously needled three-dimensional structures of fibrous material |
US4666647A (en) * | 1985-12-10 | 1987-05-19 | Kimberly-Clark Corporation | Apparatus and process for forming a laid fibrous web |
GB8602003D0 (en) | 1986-01-28 | 1986-03-05 | Lawton P G | Carbonisable fibre assembly |
FR2626294B1 (fr) * | 1988-01-26 | 1990-07-13 | Carbone Ind | Procede de fabrication d'une structure fibreuse tridimensionnelle en vue de la realisation ulterieure d'une piece en un materiau composite et machine pour sa mise en oeuvre |
US5662855A (en) * | 1994-05-17 | 1997-09-02 | The B.F. Goodrich Company | Method of making near net shaped fibrous structures |
FR2726013B1 (fr) * | 1994-10-20 | 1997-01-17 | Carbone Ind | Procede de realisation d'un substrat fibreux par superposition de couches fibreuses et substrat ainsi obtenu |
FR2741634B1 (fr) * | 1995-11-27 | 1998-04-17 | Europ Propulsion | Procede pour la realisation de preformes fibreuses destinees a la fabrication de pieces annulaires en materiau composite |
US5829708A (en) * | 1996-10-02 | 1998-11-03 | Memtec America Corporation | Apparatus and method for making melt-blown nonwoven sheets |
FR2759387B1 (fr) * | 1997-02-12 | 1999-05-21 | Carbone Ind | Realisation de preforme fibreuse annulaire par enroulement de ruban |
JP3556071B2 (ja) * | 1997-06-10 | 2004-08-18 | 株式会社エクセディ | クラッチフェーシング巻取り機 |
FR2824086B1 (fr) * | 2001-04-30 | 2003-08-01 | Messier Bugatti | Machine d'aiguilletage circulaire a table lisse |
FR2824085B1 (fr) * | 2001-04-30 | 2003-08-01 | Messier Bugatti | Machine d'aiguilletage circulaire munie d'un dispositif d'evacuation automatique de preformes |
FR2824084B1 (fr) * | 2001-04-30 | 2003-08-01 | Messier Bugatti | Alimentation aiguilleteuse par bande spirale continue |
-
2002
- 2002-05-23 FR FR0206262A patent/FR2839985B1/fr not_active Expired - Fee Related
-
2003
- 2003-05-22 EP EP03755182A patent/EP1507907A1/fr not_active Withdrawn
- 2003-05-22 BR BR0304663-0A patent/BR0304663A/pt not_active IP Right Cessation
- 2003-05-22 JP JP2004507584A patent/JP4299237B2/ja not_active Expired - Fee Related
- 2003-05-22 CN CNB038118149A patent/CN100381626C/zh not_active Expired - Fee Related
- 2003-05-22 AU AU2003249414A patent/AU2003249414B9/en not_active Ceased
- 2003-05-22 MX MXPA04011626A patent/MXPA04011626A/es active IP Right Grant
- 2003-05-22 US US10/515,036 patent/US7404921B2/en not_active Expired - Fee Related
- 2003-05-22 WO PCT/FR2003/001547 patent/WO2003100148A1/fr active Application Filing
- 2003-05-22 RU RU2004133378/12A patent/RU2309209C2/ru not_active IP Right Cessation
- 2003-05-22 KR KR10-2004-7018802A patent/KR20050007417A/ko not_active Application Discontinuation
- 2003-05-22 UA UA20041109518A patent/UA77793C2/uk unknown
- 2003-05-22 CA CA002486608A patent/CA2486608A1/fr not_active Abandoned
-
2004
- 2004-11-08 IL IL165098A patent/IL165098A/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO03100148A1 * |
Also Published As
Publication number | Publication date |
---|---|
AU2003249414B2 (en) | 2008-03-20 |
US7404921B2 (en) | 2008-07-29 |
UA77793C2 (en) | 2007-01-15 |
CA2486608A1 (fr) | 2003-12-04 |
AU2003249414A1 (en) | 2003-12-12 |
AU2003249414B9 (en) | 2008-05-15 |
CN100381626C (zh) | 2008-04-16 |
JP4299237B2 (ja) | 2009-07-22 |
IL165098A0 (en) | 2005-12-18 |
FR2839985B1 (fr) | 2004-08-20 |
KR20050007417A (ko) | 2005-01-17 |
FR2839985A1 (fr) | 2003-11-28 |
CN1656270A (zh) | 2005-08-17 |
MXPA04011626A (es) | 2005-07-05 |
US20050172465A1 (en) | 2005-08-11 |
WO2003100148A1 (fr) | 2003-12-04 |
BR0304663A (pt) | 2004-07-20 |
IL165098A (en) | 2009-07-20 |
RU2309209C2 (ru) | 2007-10-27 |
JP2005526921A (ja) | 2005-09-08 |
RU2004133378A (ru) | 2005-06-27 |
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