EP2435238A2 - Dispositif et procédé pour produire un élément composite - Google Patents

Dispositif et procédé pour produire un élément composite

Info

Publication number
EP2435238A2
EP2435238A2 EP10721793A EP10721793A EP2435238A2 EP 2435238 A2 EP2435238 A2 EP 2435238A2 EP 10721793 A EP10721793 A EP 10721793A EP 10721793 A EP10721793 A EP 10721793A EP 2435238 A2 EP2435238 A2 EP 2435238A2
Authority
EP
European Patent Office
Prior art keywords
resin
filter plate
fiber material
fiber
feed
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Withdrawn
Application number
EP10721793A
Other languages
German (de)
English (en)
Inventor
Hans-Juergen Weber
Gregor Christian Endres
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Airbus Operations GmbH
Original Assignee
Airbus Operations GmbH
EADS Deutschland GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Airbus Operations GmbH, EADS Deutschland GmbH filed Critical Airbus Operations GmbH
Publication of EP2435238A2 publication Critical patent/EP2435238A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
    • B29C70/342—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using isostatic pressure
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/10—Moulds or cores; Details thereof or accessories therefor with incorporated venting means
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • B29C33/3814—Porous moulds
    • 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
    • B29C70/28—Shaping operations therefor
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • B29C70/549—Details of caul plates, e.g. materials or shape

Definitions

  • the present invention relates to an apparatus for producing a fiber composite component, in particular for an aircraft or spacecraft. Furthermore, the invention relates to a method for producing a fiber composite component.
  • Such fiber composite components typically comprise fibers of e.g. Carbon, Aramnid and / or glass, which are embedded in a mostly thermosetting plastic matrix.
  • fibers impregnated with a resin - so-called prepregs - are placed in a mold shaped according to the component, and the resin is e.g. cured by the action of heat.
  • initially undiluted fibers are placed in a mold and impregnated by supplying liquid resin into the mold with the resin. Subsequently, the curing of the resin takes place in the mold.
  • the fibers with the uncured resin matrix are usually airtight enclosed in the mold before curing and subjected to a vacuum.
  • the quality of the vacuum is strongly influenced by the influence on the pore formation for the later component quality.
  • vacuum foils, silicone membranes or vacuum bags consisting thereof are used for airtight enclosure.
  • the effect in particular in the case of areally expanded fiber composite components, is that the films are quickly sucked to the surface of the component and block further air flows from the component surface to the extraction points. This restricts the quality of the vacuum that can be achieved on the component surface so that pore formation can not be sufficiently prevented.
  • this object is achieved by a device for producing a fiber composite component with the features of patent claim 1 and by a method for producing a fiber composite component. nes fiber composite component solved with the features of claim 11.
  • the idea underlying the present invention is to arrange on a molding surface of a molding tool for molding a resin-impregnated fiber material a filter plate which has a porous material. Furthermore, the device comprises a means for generating a negative pressure on a side of the filter plate facing away from the fiber material.
  • the material of the filter plate is porous, allows the negative pressure on the entire acting as a filter surface of the plate also on the fiber material facing side of the filter plate passes or air is sucked flat in the opposite direction, so that on the entire Filter plate facing surface of the fiber material creates a high quality vacuum and pore formation in the fiber composite component is reliably prevented.
  • the inherent low deformability of the porous material designed as a plate prevents the material from being compressed under the influence of the vacuum, so that a high dimensional accuracy and surface quality of the fiber composite component can also be achieved without additional perforated plates or the like. elaborate measures is made possible.
  • a resin-impregnated fiber material is placed on the filter plate, the fiber material over the filter plate airtight covered and a negative pressure on the side facing away from the fiber material
  • Filter plate generated Since the low deformability of the material of the filter plate allows to arrange the filter plate in the mold without affecting the dimensional stability of the fiber composite component, the filter plate need not be rearranged to produce each individual fiber composite component.
  • the fact that the negative pressure is generated on the side facing away from the fiber material, also allows the also permanently set up appropriate means so that they do not have to be rebuilt cost-effectively for each manufacturing process.
  • the porous material has a sintered material.
  • a sintered material is characterized by particularly high intrinsic stability, so that the pores formed in the sintered material remain reliably open and a particularly high dimensional stability of the fiber composite component is achieved.
  • the sintered material has a grain size of 0.2 to 2 mm, on the one hand to allow an unobstructed air flow through the filter plate and on the other hand, a sufficiently flat surface on the side of the fiber material.
  • the filter plate has two layers of the sintered material with different grain sizes.
  • the layer with the larger grain size is arranged on the side facing away from the fiber material.
  • the porous material has a metal material, which makes the device particularly robust.
  • Preferred metal materials are e.g. Bronze and / or steel due to their special resilience.
  • the filter plate has a thickness of 1 to 5 mm. This allows a good inherent stability with good air permeability.
  • a substantially impermeable to the resin membrane is provided, the one Fiber material facing side of the filter plate covered. In this way it is prevented that resin from the resin-impregnated fiber material gets into pores of the filter plate.
  • a vacuum film or silicone membrane for airtight covering of the fiber material is furthermore provided above the filter plate. This is particularly easy to place, since no suction or similar. must be attached with the vacuum film or silicone membrane.
  • the device comprises a first feed device for feeding resin into the fiber material at a first feed point and a second feed device for feeding resin into the fiber material at a second feed point.
  • the second feed location is spaced from the first feed location in a direction along the filter plate.
  • a resin detector at a detection location in the region of the second feed location, which detects whether resin has reached the detection point, and a control device which activates the second feed device when resin has reached the detection point.
  • the detection point is preferably arranged at a distance from the second supply point in the direction of the first supply point. This ensures that the resin has already reached the second supply point when the control device activates the same, so that air entrapment between amounts of resin supplied by the two supply points is prevented.
  • FIG. 1 shows a schematic sectional view of a device for producing a composite component according to an embodiment
  • FIG. 2 is a fragmentary sectional view of a filter plate of a device according to an embodiment
  • FIG. 4 shows a schematic representation of a method and a device for producing an aircraft fuselage section according to an embodiment.
  • FIG. 1 shows a schematic sectional view of a device 100 for producing a composite component 102.
  • a forming tool 104 of the device 100 has a depression with a shaping surface 106.
  • a suction opening 111 is formed in the molding surface 106, which leads through the molding tool 104 and ends in a suction nozzle 112 formed on a rear side of the molding tool 104 facing away from the molding surface 106.
  • the suction nozzle 112 is connected to a vacuum pump 113 via a vacuum hose.
  • the surface of the film facing away from the mold surface 106 terplatte 102 is covered by a semi-permeable, impermeable to resin and permeable to air membrane 114, for example, a correspondingly impregnated thin textile fabric.
  • a seal 116 is arranged, which seals a vacuum film 116 airtight with the mold 104.
  • a fiber composite component 102 is arranged between the vacuum film 118 and the filter plate 110 covered with the membrane 114.
  • the fiber composite component 102 is e.g. arranged in the manner shown above the filter plate 110 in the form of prepregs and covered with the vacuum film 118. Then, by means of the vacuum pump 113, the space surrounding the fiber composite component 102 is evacuated and e.g. cured by supplying heat by means of a heater, not shown, the fiber composite component 102. In addition, external pressure can be applied, e.g. in an autoclave.
  • FIG. 2 is a fragmentary sectional view of a filter plate 110 of a device, e.g.
  • the filter plate 110 has two superimposed first and second layers 201, 202 of a sintered material 200, e.g. Bronze, steel or ceramics.
  • a grain size d1 (diameter) is made smaller than a grain size d2 in the second layer 202 having a thickness h2.
  • the grain sizes d1, d2 are e.g. in the range between 0.2 mm and 2 mm, with a total thickness h of the filter plate 110 of about
  • Grain sizes d1, d2 and thicknesses h1, h2, h are matched to one another such that air-permeable pores 210 remain, the filter plate 110 is stable and has a surface 230 facing the fiber composite component when used as intended.
  • FIG. 3 shows a sectional view of an exemplary embodiment.
  • bundbauteils 102 which can be produced with a device such as that shown in Fig. 1.
  • the composite component 102 has a planar expanded core 408 of a foam material, on the opposite, substantially parallel sides of a first 401 and second 402 cover layer are formed of a fiber material. Between the first 401 and second 402 cover layers struts 403 of fiber bundles extend through the core 408, the ends 406 of which abut the cover layers 401, 402. Cover layers 401, 402 and struts 403 are connected to one another
  • Filled plastic matrix the e.g. can be supplied in the evacuated state when arranged in the device of FIG. 1.
  • FIG. 4 shows a schematic representation of a method and a device for producing a fuselage shell 102 for fuselage section in the form of a fiber composite component, which is e.g. an internal structure such as that shown in Fig. 3 has.
  • the apparatus includes a mold 104 that defines an outer surface of the fuselage.
  • a mold 104 that defines an outer surface of the fuselage.
  • Untreated fiber material 102 having a structure as shown in FIG. 3 is disposed on a membrane 114 covering the filter plate 110 and sealed airtight over the filter plate by a vacuum film 118.
  • a first feed device 301 for supplying resin into the fiber material 102 is arranged through the vacuum film 118.
  • Further feed devices 302-306 are located upwardly of the first feed point 311 along the curvature of the fuselage shell 102 to be produced at approximately regular intervals.
  • respective resin detectors 332-336 are mounted in the vicinity of one of the second 302 to sixth 306 feeders, which are respectively slightly offset in the direction away from the first feed point 311 relative to the associated feeder.
  • the resin detectors are configured to output a detection signal via respective detector lines 392 if they detect the presence of resin.
  • the resin detectors 332-336 have a suitable recess with a photocell that optically registers penetrating resin.
  • the detector lines lead to a detection unit 343 of a control device 342 of the device 100, which evaluates signals received during operation and instructs a control unit 344 of the control device 342 to activate the respectively associated supply unit 302-306 via corresponding activation lines 390 when a resin detector 332-336 responds. Conveniently, at the same time the resin supply to the rest of the feeders 302-306 interrupted.
  • the porous material may also consist of a single layer of uniform grain size, or have a variety of different grain sizes in mixture.
  • the porous material can be produced in other ways than by sintering, for example by chemical methods.
  • Control unit 390 Control line 392 Detection line
  • a device for producing a fiber composite component comprising: a mold having a forming surface for forming a resin-impregnated fiber material; a filter plate disposed on the forming surface and having a porous material; and a means for generating a negative pressure on the molding surface on a side facing away from the fiber material of the filter plate.
  • Device according to embodiment 2 characterized in that the sintered material has a particle size of 0.2 to 2 mm.
  • Device characterized in that the filter plate has two layers of the sintered material with different grain sizes, wherein the layer with the larger grain size on the side facing away from the fiber material is arranged.
  • porous material comprises a metal material, in particular bronze and / or steel.
  • the filter plate has a thickness of 1 to 5 mm.
  • Device characterized by a substantially impermeable to the resin membrane, which covers a side facing the fiber material of the teri terplatte.
  • Device characterized by a vacuum film or silicone membrane for airtight covering of the fiber material over the filter plate.
  • Device characterized by a first feed device for supplying resin into the fiber material at a first feed point; second feeder means for feeding resin into the fibrous material at a second feed location which is spaced from the first feed location along the filter plate; a resin detector at a detection location in the region of the second delivery location, which detects whether resin has reached the detection site; and a controller that activates the second feeder when resin has reached the detection site.
  • Apparatus according to exemplary embodiment 9 characterized in that the detection point is arranged at a distance from the second feed point in the direction of the first feed location. is net.
  • a method for producing a fiber composite component comprising the steps of: providing a filter plate comprising a porous material;
  • step of arranging the resin-impregnated fiber material comprises: arranging the fiber material on the filter plate;

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulding By Coating Moulds (AREA)
  • Filtering Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne un dispositif pour produire un élément composite renforcé par des fibres. Ce dispositif comprend un outil de formage présentant une surface pour le formage d'un matériau fibreux imprégné de résine, une plaque filtrante disposée sur la surface de formage et présentant un matériau poreux, ainsi qu'un moyen pour produire une dépression au niveau de la surface de formage, du côté de la plaque filtrante opposé au matériau fibreux. L'invention concerne également un procédé pour produire un élément composite renforcé par des fibres, ledit procédé consistant à mettre à disposition une plaque filtrante présentant un matériau poreux, puis à placer un matériau fibreux imprégné de résine sur la plaque filtrante, à recouvrir le matériau fibreux et à produire une dépression sur un côté de la plaque filtrante opposé au matériau fibreux.
EP10721793A 2009-05-25 2010-05-25 Dispositif et procédé pour produire un élément composite Withdrawn EP2435238A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102009026456A DE102009026456A1 (de) 2009-05-25 2009-05-25 Vorrichtung und Verfahren zur Herstellung eines Verbundbauteils
US18105609P 2009-05-26 2009-05-26
PCT/EP2010/057124 WO2010136433A2 (fr) 2009-05-25 2010-05-25 Dispositif et procédé pour produire un élément composite

Publications (1)

Publication Number Publication Date
EP2435238A2 true EP2435238A2 (fr) 2012-04-04

Family

ID=43069900

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10721793A Withdrawn EP2435238A2 (fr) 2009-05-25 2010-05-25 Dispositif et procédé pour produire un élément composite

Country Status (9)

Country Link
US (1) US20120119405A1 (fr)
EP (1) EP2435238A2 (fr)
JP (1) JP2012528024A (fr)
CN (1) CN102448709A (fr)
BR (1) BRPI1010628A2 (fr)
CA (1) CA2763116A1 (fr)
DE (1) DE102009026456A1 (fr)
RU (1) RU2011150206A (fr)
WO (1) WO2010136433A2 (fr)

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DE102011119613B4 (de) 2011-11-29 2017-07-27 Airbus Defence and Space GmbH Formwerkzeug und Herstellvorrichtung zum Herstellen von Kunststoffbauteilen sowie Formwerkzeugherstellverfahren
JP6073499B2 (ja) * 2012-12-28 2017-02-01 コンポジテンス ゲーエムベーハーＣｏｍｐｏｓｉｔｅｎｃｅ ＧｍｂＨ 二つのステップで三次元繊維ファブリック及び繊維製の構造部品プリフォームを製造するための方法及び装置
DE102013214255A1 (de) * 2013-07-22 2015-01-22 Bayerische Motoren Werke Aktiengesellschaft Absaugung eines Imprägniertisches
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CN104527085A (zh) * 2014-12-05 2015-04-22 航天特种材料及工艺技术研究所 一种复合材料多闭室厚壁盒形梁及整体成型方法
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GB201704890D0 (en) 2017-03-28 2017-05-10 Composite Tech And Applications Ltd A tool for manufacturing a composite component
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EP4059688B1 (fr) * 2020-03-23 2025-01-22 Mitsubishi Heavy Industries, Ltd. Procédé de mise en forme de composite renforcé par des fibres et appareil de formation de composite renforcé par des fibres
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Also Published As

Publication number Publication date
US20120119405A1 (en) 2012-05-17
CN102448709A (zh) 2012-05-09
RU2011150206A (ru) 2013-07-10
JP2012528024A (ja) 2012-11-12
WO2010136433A3 (fr) 2011-04-07
DE102009026456A1 (de) 2010-12-16
WO2010136433A2 (fr) 2010-12-02
CA2763116A1 (fr) 2010-12-02
BRPI1010628A2 (pt) 2017-05-23

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