EP4255722A1 - Procédé de production d'un élément composite renforcé par des fibres sous forme de feuille présentant au moins une courbe - Google Patents

Procédé de production d'un élément composite renforcé par des fibres sous forme de feuille présentant au moins une courbe

Info

Publication number
EP4255722A1
EP4255722A1 EP22700361.3A EP22700361A EP4255722A1 EP 4255722 A1 EP4255722 A1 EP 4255722A1 EP 22700361 A EP22700361 A EP 22700361A EP 4255722 A1 EP4255722 A1 EP 4255722A1
Authority
EP
European Patent Office
Prior art keywords
fiber material
composite component
tool
roving
fiber
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
Application number
EP22700361.3A
Other languages
German (de)
English (en)
Inventor
Michael Karl
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.)
Siemens Mobility GmbH
Original Assignee
Siemens Mobility 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 Siemens Mobility GmbH filed Critical Siemens Mobility GmbH
Publication of EP4255722A1 publication Critical patent/EP4255722A1/fr
Pending 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
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
    • B29C70/48—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs and impregnating the reinforcements in the closed mould, e.g. resin transfer moulding [RTM], e.g. by vacuum
    • 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
    • B29C70/08—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers
    • 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
    • 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
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
    • B29C70/443—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding and impregnating by vacuum or injection
    • 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
    • B29C70/541—Positioning reinforcements in a mould, e.g. using clamping means for the 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
    • B29C70/28—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
    • B29C70/543—Fixing the position or configuration of fibrous reinforcements before or during moulding
    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/02—Bending or folding
    • B29C53/04—Bending or folding of plates or sheets
    • 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
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/74—Moulding material on a relatively small portion of the preformed part, e.g. outsert moulding
    • B29C70/76—Moulding on edges or extremities of the preformed part

Definitions

  • the invention relates to a method for producing a plate-shaped fiber composite component, the outer shape of which has at least one curvature, in which the fiber material is inserted into a tool which has an inner curved contact surface for the fiber material that is adapted to the curvature of the fiber composite component and in is converted into a laminate with the tool under the action of pressure and/or temperature.
  • the following measures are taken in an RTM process in which the fiber material is placed in a tool with a lower fixed tool shell and a vacuum film, which together with the lower tool shell forms the cavity into which the fiber material is to be inserted : in the area of the corners and small radii of the fiber composite component, folds are placed in the film of the tool.
  • the film exerts local pressure on the fiber material in the areas of corners or small radii of the fixed tool shell and prevents the film from being overstretched as well.
  • the invention is based on the object of further developing the method for producing a fiber composite component of the type mentioned at the outset in such a way that qualitatively improved laminate structures result in the area of corners and small radii of the fiber composite component.
  • the initially described method for producing a plate-shaped fiber composite component is characterized in that a roving is inserted into the curvature of the fiber material after the fiber material has been inserted into the tool and before the fiber material is transformed into the laminate.
  • the roving is, in particular, endless filaments which, when the tool is laid, are laid into the corners and areas with small radii along the course of these corners and small radii after the dry fiber material or the fiber material present as prepreg has been laid. In this way, an endless fiber reinforcement of the fiber composite component is created in areas that would not be reinforced when using methods according to the prior art.
  • the roving structure can also function as a stiffening frame. Due to a preferably provided endless fiber structure, it has high strength and stiffness.
  • the roving is preferably made from the same material as the fiber material. This can in particular be glass fiber or carbon fiber material. However, different choices can also be made between the material for the endless filaments and the material for the fibers.
  • the fibrous material is preferably present in one or more layers of fibrous mats. These can either be in the form of prepreg, in which they have already been treated with a resin/hardener mixture, or as a dry fiber material, which in the course of being subjected to pressure and/or temperature temperature, for example when carrying out an RTM process, both resin and hardener can be added.
  • the roving is arranged and supported on the fiber material in such a way that it acts on the fiber material in the area of its curvature as a pressure piece acting in the direction of the inner curved contact surface of the tool.
  • the vacuum film tends to overstretch and void in corners.
  • the roving fills this cavity.
  • the vacuum foil presses on the roving.
  • the roving in turn presses the fiber material into the geometry (eg small radius) of the cavity. A pressure-free area that would result from overstretching the film is prevented.
  • folds can be placed in the vacuum film so that the vacuum film can be tightened into the corners of the tool shell.
  • FIG. 1 shows a schematic cross-sectional view of a fiber material placed in a tool shell before the fiber material is transformed into a laminate
  • FIG. 2 shows a schematic cross-sectional view of a fiber material placed in a tool tray after the fiber material has been transformed into a laminate.
  • FIG. 1 shows a dry fibrous material 1 which is placed in a fixed mold shell 2 in order to be formed into a laminate.
  • the fiber material 1 is used to produce a fiber composite component, the outer shape of which is adapted to that of the later present fiber composite component.
  • the tool shell 2 has an inner corner 3 so that the shape specified by the inner corner 3 is transferred to the outer shape of the adjoining area of the fiber material 1 in the course of a lamination process.
  • the fiber material 1 therefore has a curved area 4 which is directly adjacent to the inner corner 3 . Both the inner corner 3 and the curved area 4 extend a little way along the plate-shaped fiber composite component, perpendicular to the plane of the drawing in FIGS.
  • a roving 5 is inserted, which in the present exemplary embodiment is formed from endless filaments that form a bundle and is made from the same fiber material as the fiber material 1 .
  • these can be carbon or glass fibers.
  • the roving 5 is thus arranged on an outside of the curved area 4 of the dry fiber material in relation to the tool shell 2 .
  • FIG. 2 now shows the situation that arises after a lamination process has been carried out, for example an RTM process (Resin Transfer Molding process).
  • a cavity required to build up a negative pressure in the area of the fiber material 1 is formed by the mold shell 2 and a vacuum foil 6, which together form a pressure-tight cavity in which the fiber material 1 is arranged and, for example, by subjecting the cavity to a negative pressure with a resin / Hardener mixture is applied, as required, with additional application of pressure and / or heat.
  • RTM process Resin Transfer Molding process
  • the fiber material 1 transformed into a laminate forms a right-angled edge (the curved area 4 in FIG. 1), with the roving 5 being arranged on an inside of the right-angled edge of the fiber composite component - net and fused with the fiber material 1 zen.
  • the roving 5 also acts as a pressure piece on the fiber material 1 and presses it into the inner corner 3, because when there is a negative pressure in the cavity, the vacuum foil 6 presses on the roving 5 and the roving 5 presses the fiber material 1 into the tool.
  • the method described above for producing a plate-shaped fiber composite component is completed by removing the vacuum film 6 and then removing the finished fiber composite component from the mold shell 2 .
  • the method presented is particularly suitable for plate-shaped fiber composite components whose external shape has at least one curvature with a radius of less than 20 mm, in particular less than 10 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé de production d'un élément composite renforcé par des fibres sous forme de feuille dont la forme externe présente au moins une courbe dans laquelle une matière fibreuse (1) est introduite dans un moule présentant une surface de contact incurvée interne pour le matériau fibreux (1) qui est adapté à la courbure du composant composite fibreux, et est remis en forme dans le moule sous haute pression et/ou à haute température pour former un stratifié, une mèche (5) étant insérée dans la courbe du matériau fibreux (1) après l'insertion du matériau fibreux (1) dans le moule et avant la remise en forme du matériau fibreux (1).
EP22700361.3A 2021-02-05 2022-01-04 Procédé de production d'un élément composite renforcé par des fibres sous forme de feuille présentant au moins une courbe Pending EP4255722A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021201106.3A DE102021201106A1 (de) 2021-02-05 2021-02-05 Verfahren zur Herstellung eines plattenförmigen Faserverbund-Bauteils mit wenigstens einer Krümmung
PCT/EP2022/050084 WO2022167160A1 (fr) 2021-02-05 2022-01-04 Procédé de production d'un élément composite renforcé par des fibres sous forme de feuille présentant au moins une courbe

Publications (1)

Publication Number Publication Date
EP4255722A1 true EP4255722A1 (fr) 2023-10-11

Family

ID=79831657

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22700361.3A Pending EP4255722A1 (fr) 2021-02-05 2022-01-04 Procédé de production d'un élément composite renforcé par des fibres sous forme de feuille présentant au moins une courbe

Country Status (3)

Country Link
EP (1) EP4255722A1 (fr)
DE (1) DE102021201106A1 (fr)
WO (1) WO2022167160A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008017381B4 (de) 2008-04-05 2011-12-08 Deutsches Zentrum für Luft- und Raumfahrt e.V. Verfahren und Hilfsmittel zur Herstellung von Bauteilen aus Faserverbundwerkstoff
US8771575B2 (en) * 2011-07-27 2014-07-08 Dieffenbacher GmbH Maschinen- und Anlagenbau Methods and systems for forming reinforced composite articles having variable thickness corners
PL2617555T3 (pl) * 2012-01-20 2014-11-28 Siemens Ag Łopatka wirnika turbiny wiatrowej z krawędzią spływu zawierającą niedoprzędy
DE102015102440B4 (de) 2014-02-20 2017-01-12 East-4D Carbon Technology Gmbh Verfahren zur Herstellung eines Faserverbund-Hohlkörpers mit helixförmiger Kontur
BE1022462B1 (fr) 2014-09-12 2016-04-07 Techspace Aero S.A. Carter composite de compresseur basse pression de turbomachine axiale
JP6682544B2 (ja) * 2015-02-11 2020-04-15 ムベア カルボ テック ゲーエムベーハーＭｕｂｅａ Ｃａｒｂｏ Ｔｅｃｈ Ｇｍｂｈ 繊維補強された環状体の製造方法および繊維補強された環状体の製造装置
GB2566433A (en) 2017-07-13 2019-03-20 Spirit Aerosystems Europe Ltd Composite lay-up apparatus and method
CN111684155B (zh) * 2017-12-08 2023-02-17 维斯塔斯风力系统有限公司 用于风力涡轮机叶片根部的插入件

Also Published As

Publication number Publication date
DE102021201106A1 (de) 2022-08-11
WO2022167160A1 (fr) 2022-08-11

Similar Documents

Publication Publication Date Title
DE69610666T2 (de) Faserverstärktes Bauteil und Verfahren zu seiner Herstellung
DE3784467T2 (de) Vorgeformtes Material für faserverstärkte Kunststoffe.
DE102012110354B4 (de) Formwerkzeug, Steuermittel, Verfahren und Anlage zum Herstellen eines, vorzugsweise faserverstärkten, Kunststoffbauteils
DD287542A5 (de) Bauteil auf gewirkebasis und verfahren zu seiner herstellung
DE4040746A1 (de) Querformwerkzeug zum verdichten von verbundmaterialien
DE69024307T2 (de) Geformter faserverstärkter Kunststoffgegenstand und Verfahren zur Herstellung derselben
WO2018083118A1 (fr) Pale de rotor courbe comportant des produits pultrudés, et procédé de fabrication de ladite pale
DE102011110206B4 (de) Formwerkzeug
DE102013212571A1 (de) Verfahren zur Verbindung von Teil-Preforms
EP4255722A1 (fr) Procédé de production d'un élément composite renforcé par des fibres sous forme de feuille présentant au moins une courbe
WO2021023829A1 (fr) Procédé de réparation d'un élément composite renforcé par fibres
EP0224064A2 (fr) Procédé pour la fabrication de pièces construites en matière thermoplastique renforcée de fibres
EP3504046B1 (fr) Mousse renforcee par des fibres
EP0012167A1 (fr) Procédé de fabrication d'un objet en matière plastique renforcée et objet obtenu selon ce procédé
WO2022253612A1 (fr) Empilement de préimprégné et son procédé de production
DE102019108580B3 (de) Verfahren und Vorrichtung zur kontinuierlichen Herstellung gefalteter Zellstrukturen, sowie gefaltete Zellstruktur
EP0386387B1 (fr) Liaison en couche mitoyenne sous forme de nappe et procédé de réalisation
DE102018105762B3 (de) Verfahren zum Herstellen eines Faserlaminates und eines Faserverbundbauteils
DE102019123127A1 (de) Halbzeug, Faserverbundbauteil sowie Verfahren zu dessen Herstellung
DE69015962T2 (de) Verbundmaterial, Herstellungsverfahren und Verwendung dieses Materials.
DE102019116817A1 (de) Verfahren und Vorrichtung zur Herstellung eines Profilbauteils
EP3037264A1 (fr) Semi-produit alvéolaire et élément sandwich
DE102013011580B4 (de) Verfahren zur Herstellung eines faserverstärkten Kunststoffbauteils
EP3887133B1 (fr) Pale de rotor à courroies pourvues d'éléments pultrudés déformables
DE19923480A1 (de) Halbzeug aus Polymeren sowie Verfahren zu seiner Herstellung

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20230707

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)