WO2013107848A2 - Procédé et dispositif pour produire une préforme tridimensionnelle à partir d'une structure fibreuse lors de la production de pièces moulées renforcées par des fibres - Google Patents

Procédé et dispositif pour produire une préforme tridimensionnelle à partir d'une structure fibreuse lors de la production de pièces moulées renforcées par des fibres Download PDF

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Publication number
WO2013107848A2
WO2013107848A2 PCT/EP2013/050910 EP2013050910W WO2013107848A2 WO 2013107848 A2 WO2013107848 A2 WO 2013107848A2 EP 2013050910 W EP2013050910 W EP 2013050910W WO 2013107848 A2 WO2013107848 A2 WO 2013107848A2
Authority
WO
WIPO (PCT)
Prior art keywords
fiber fabric
fiber
draping
temperature
transport
Prior art date
Application number
PCT/EP2013/050910
Other languages
German (de)
English (en)
Other versions
WO2013107848A3 (fr
Inventor
Matthias Graf
Original Assignee
Dieffenbacher GmbH Maschinen- und Anlagenbau
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 Dieffenbacher GmbH Maschinen- und Anlagenbau filed Critical Dieffenbacher GmbH Maschinen- und Anlagenbau
Publication of WO2013107848A2 publication Critical patent/WO2013107848A2/fr
Publication of WO2013107848A3 publication Critical patent/WO2013107848A3/fr

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Classifications

    • 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
    • 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
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
    • 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
    • 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

Definitions

  • the invention relates to a method for producing a three-dimensional preform from a fiber fabric in the course of the production of
  • Fiber composite components mentioned is in particular as industrial use the RTM process, resin transfer molding process, common practice. The entire manufacturing process up to a usable one
  • Plastic components consists of several consecutive expiring
  • near-net shape preforms / semi-finished fiber products are produced.
  • this preform process are usually several layers of fabric or fiber fabric, usually in two-dimensional form, stacked or possibly joined (sewing, welding, gluing), so that the fiber fabric stack substantially already the necessary outer contours and sometimes already special
  • the tissue stacks are then transferred to a forming tool and usually under pressure by closing the forming tool as far as the contour of the subsequent molding approximated and cured by activating the binder (heating and cooling), the final fiber in a tool press a Implementation of the RTM method itself can be inserted. As needed, that will
  • Fiber cloth stack exhausted which is finally transferred in a press from its 2D form into a 3D shape.
  • This can be done in a prefixed (eg. sewn) or still be performed in a flexible state.
  • the goal is to obtain a preform after shaping, which has sufficient inherent rigidity to be fully automated and process-safe in the tool of a RTM press can be inserted or can be transported and stacked until further use.
  • Semifinished fiber is the foundation for the success of the production of a
  • the aim is to obtain a preform that is rigid enough to be fully automated and process-safe in the tool of a RTM press after forming the preform from a pliable material or to the other
  • fiber webs or webs are unwound from a roll and made into a fiber stack as required from a plurality of different fabrics or plies, shapes and sizes. It may be necessary, the outer and possibly inner contour corresponding to a pattern of the Preform or the plastic molding to edit or
  • the pattern is generated from a development of the preform, or the final component.
  • the created, essentially flat fiber stack is then draped by means of a draping device, respectively converted into a three-dimensional preform.
  • a binder is introduced between the individual layers and then cured. It is state of the art that the fiber fabric respectively the
  • Fiber stack is heated by means of suitable heating devices and placed in a relatively cool or cold Drapierform. Subsequently, the draping form is quickly closed or draped appropriately to cure the binder. It has now been found that, especially in the case of complex geometries or large-area fiber layers, pre-solidification of the binder in the fiber layer may occur if this partially results in good heat transfer for cooling. Closing the mold now causes problems during forming, since stiff or hardened areas serve as brakes and so unwanted stress on the individual layers of the
  • Fiber fabric It comes to shifts, creases or the like
  • the object of the invention is to provide a method and a device in which despite a rapid forming, in particular of
  • the solution of the task for the method consists in that during transport and / or the transfer of the fiber fabric in the
  • Draping device with an operatively connected to the transport device tempering the fiber fabric is tempered.
  • Temperature control of the fiber fabric during transport to and / or for transfer to the draping a temperature control device with the transport device is operatively connected.
  • the device is particularly suitable for carrying out the method, but can also be operated independently.
  • multilevel draping processes that are complex geometries ,. For example, you have to drape first in the border area before you can drape other areas with a central area.
  • the temperature of an already tempered fiber fabric is set and / or maintained at a predetermined minimum temperature.
  • the minimum temperature corresponds essentially to the melting point of the binder within the fiber fabric.
  • a selected tempering should at least for
  • Figure 1 shows a plant for the production of fiber-reinforced molded parts 19 in a RTM press 15 using preformed preforms 17 as a large industrial application in a schematic side view.
  • preforms 17 one or more different fiber mats 10, preferably as roll goods, are first provided and cut on a cutting device 12 with a cutting device 1 1 into individual fiber mat blanks (not shown).
  • the contour of the fiber mat blanks may substantially coincide with the contour of the preform 17 or the molding 19, but it may also predetermined Partial geometries are made of it.
  • the fiber mat blanks are then moved by means of a suitable transport device (which are shown in Figure 1 by curved directional arrows) through a glue applicator 13 and there provided with binder before they to a
  • Fibrous scrims 1 are joined together.
  • the ready-made fiber fabric 1 is subsequently tempered by a heating device 2 and preferably raised to a temperature which at least the
  • Fiber web 1 spent in a drapery device 3 and there by means
  • Transport device the fiber fabric 1 with the tempering, for example, in the tray 7 or also moving along the tray. 7 is arranged, heat up or keep its already existing temperature at least above the melting point of the binder.
  • the transport device 21 is retracted into the draping device 3, in a two-part tray 7, the first part of the tray can be moved out of engagement with a part of the fiber fabric 1.
  • the necessary number of parts of the tray 7 is a multiple and that at least one of these parts, preferably all, have the option for temperature control or contain a Tmper réellesvorraum.
  • a first Fixierstempel 4 or a Drapierstkov 5 fix the vacant area of the fiber fabric 1 on the Drapierform 18 accordingly and if necessary. Reshape.
  • the second part of the tray 7 can now start to move out of the draping device 3, stepwise or continuously as needed.
  • the draping punches 5 now entering in the draping direction 20 become corresponding to the areas which have become "vacant" (the areas no longer resting on the transport device)
  • Fasergeleges 1 the fiber fabric according to the contour of Drapierform 18 transform. In the present example, this is done by the subsequent process of four Drapierstkovn 5 in Drapieriques 20. Thus, it is now possible in all areas of Drapierform 18 a uniformly preheated respectively tempered fiber fabric 1 to form a preform 17.
  • a tape tray 8 is arranged. Again, the tempering is not shown, but effectively available to adjust the resting on the belt tray 8 fiber fabric 1 according to its temperature or to keep.
  • the fiber fabric 1 can be gently stored in the Drapierform 18. The fixation of the first part of the
  • Fixierstempel 4 can be provided as a precaution, especially in complex geometries, but is not necessary with simple geometries of Drapierform 18. Instead of the Drapierstempel 5, it may also be possible to provide other suitable means for draping.
  • the temperature control device can be designed as a convection radiator or as a (resistance) heating device for the transport device 21.
  • the tray described 7 is heated to a corresponding temperature sufficient to heat by means of radiating from the tray 7 radiant heat the fiber fabric accordingly or the possibly to maintain sufficient temperature at least above the melting point of the binder.
  • the transport device 21 can be subdivided several times by single extension or a combination of the possibilities described lay the fiber fabric according to the requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Reinforced Plastic Materials (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour produire une préforme tridimensionnelle (19) à partir d'une structure fibreuse (1) lors de la production de pièces moulées renforcées par des fibres,au moyen d'un dispositif de drapage (3) et d'un dispositif de transport (21) pour la structure fibreuse (1), ledit dispositif de drapage (3) comprenant au moins un moule de drapage (18) pour une structure fibreuse (3) ainsi que des moyens pouvant être déplacés vers le moule de drapage (18) et servant au formage de la structure fibreuse (3) conformément au contour du moule de drapage (18). L'objectif de l'invention est d'assurer un formage rapide mais de qualité élevée, notamment de géométries de grande surface et/ou complexes, d'une préforme. Cet objectif est atteint au moyen d'un procédé, selon lequel, pendant le transport et/ou le transfert de la structure fibreuse dans le dispositif de drapage (3), la structure fibreuse (1) est thermorégulée au moyen d'un dispositif de thermorégulation coopérant avec le dispositif de transport (21). A cet effet, pour thermoréguler la structure fibreuse (1) pendant son transport vers le dispositif de drapage (3) et/ou son transfert dans ce dernier, un dispositif de thermorégulation est agencé de manière à coopérer avec le dispositif de transport (21).
PCT/EP2013/050910 2012-01-18 2013-01-18 Procédé et dispositif pour produire une préforme tridimensionnelle à partir d'une structure fibreuse lors de la production de pièces moulées renforcées par des fibres WO2013107848A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012200698.2 2012-01-18
DE102012200698A DE102012200698A1 (de) 2012-01-18 2012-01-18 Verfahren und Vorrichtung zur Herstellung eines dreidimensionalen Vorformlings aus einem Fasergelege im Zuge der Herstellung von faserverstärkten Formteilen

Publications (2)

Publication Number Publication Date
WO2013107848A2 true WO2013107848A2 (fr) 2013-07-25
WO2013107848A3 WO2013107848A3 (fr) 2013-09-06

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/050910 WO2013107848A2 (fr) 2012-01-18 2013-01-18 Procédé et dispositif pour produire une préforme tridimensionnelle à partir d'une structure fibreuse lors de la production de pièces moulées renforcées par des fibres

Country Status (2)

Country Link
DE (1) DE102012200698A1 (fr)
WO (1) WO2013107848A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112497786A (zh) * 2020-12-03 2021-03-16 江苏亨睿碳纤维科技有限公司 一种碳纤维汽车零部件的成型方法及模具

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2701480A1 (de) * 1977-01-12 1978-07-13 Kiss Consulting Eng Verfahren zum herstellen von vorformkoerpern aus lignozellulose-wirrfaservliesen und vorrichtungen zur durchfuehrung des verfahrens
DE4314078C1 (de) * 1993-04-29 1994-03-24 Krauss Maffei Ag Vorrichtung zum Herstellen von Glasfaser-Vorformlingen
WO1999044810A1 (fr) * 1998-03-04 1999-09-10 Eldra Kunststofftechnik Gmbh Agencement de structure a fibres et procede pour la production d'une ebauche

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2701480A1 (de) * 1977-01-12 1978-07-13 Kiss Consulting Eng Verfahren zum herstellen von vorformkoerpern aus lignozellulose-wirrfaservliesen und vorrichtungen zur durchfuehrung des verfahrens
DE4314078C1 (de) * 1993-04-29 1994-03-24 Krauss Maffei Ag Vorrichtung zum Herstellen von Glasfaser-Vorformlingen
WO1999044810A1 (fr) * 1998-03-04 1999-09-10 Eldra Kunststofftechnik Gmbh Agencement de structure a fibres et procede pour la production d'une ebauche

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
RUDD C D ED - MIRACLE & S L DONALDSON D B: "Resin transfer molding and structural reaction injection molding", 1. Dezember 2001 (2001-12-01), ASM HANDBOOK / PREPARED UNDER THE DIRECTION OF THE ASM INTERNATIONAL HANDBOOK COMMITTEE, ASM INTERNATIONAL, MATERIALS PARK, OHIO ,USA, PAGE(S) 492 - 500, XP002676513, ISBN: 978-0-87170-703-1 Abbildung 1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112497786A (zh) * 2020-12-03 2021-03-16 江苏亨睿碳纤维科技有限公司 一种碳纤维汽车零部件的成型方法及模具

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Publication number Publication date
WO2013107848A3 (fr) 2013-09-06
DE102012200698A1 (de) 2013-07-18

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